Advance

HOSHI Takehiko

    Department of Biotechnological Science　Professor
Last Updated :2024/04/23

Researcher Information

Degree

  • Ph.D.（1994/03 Chiba University）
  • Master of Horticulture（1985/03 Chiba University）

URL

J-Global ID

Profile

  • Ph. D. in 1994 from the Graduate School of Natural Science and Technology, Chiba University. After working at the Institute for Biological Research, Central Research Institute of Electric Power Industry, and the Faculty of Development Engineering, Tokai University, he is currently a professor at the Faculty of Bioscience and Biotechnology, Kinki University. He specializes in plant production engineering, plant environment control engineering, and agricultural information engineering. He conducts research on environmental control systems and production support systems related to horticulture and plant factories. He is also President (2023) and Fellow (2012) of the Agricultural Information Society of Japan, Fellow (2017) of the Japanese Society of Agricultural Engineering, Director of the Asia-Pacific Food, Agriculture, and Environment Information Hub (ALFAE), Advisor of the Ubiquitous Environmental Control System (UECS) Research Group, Technical Advisor of the Smart Agri Consortium He also serves as a technical advisor to the Smart Agriculture Consortium, among others.

Research Interests

  • Deep Learning   UECS   agricultural informatics   plant environmental control engineering   施設園芸   コンピュータ   植物生産   Ubiquitous Environment Control System   ネットワーク   規格化   植物工場   インターネット   ソフトウェア   オブジェクト指向   自律分散システム   Java   植物生産ソフトウェア   リレーショナルデータベース   高度植物生産   SOAP   バッテリーカー   微気象   センサ   画像   トレーサビリティ   情報交換規格   情報通信   通信   情報交換   環境制御   コンピュータソフトウェア   Name Space   オブジェクト   エキスパートシステム   環境制御システム   温室   plant production engineering   

Research Areas

  • Informatics / Sensitivity (kansei) informatics
  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Control and systems engineering
  • Environmental science/Agricultural science / Horticulture
  • Environmental science/Agricultural science / Agricultural environmental and information engineering

Academic & Professional Experience

  • 2012/04 - Today  Kindai UniversityFaculty of Biology-Oriented Science and Technology教授
  • 2005/04 - 2012/03  Tokai UniversitySchool of High-Technology for Human WelfareProfessor
  • 1996/04 - 2005/03  Tokai UniversitySchool of High-Technology for Human WelfareAssociate Professor
  • 1991/04 - 1996/03  Tokai UniversitySchool of High-Technology for Human WelfareLecturer
  • 1989/07 - 1991/03  Tokai University開発技術研究所Assistant Professor
  • 1985/04 - 1989/06  財団法人電力中央研究所生物研究所研究員

Education

  • 1990/04 - 1994/03  千葉大学大学院  自然科学研究科  生産科学専攻
  • 1983/04 - 1985/03  千葉大学大学院  園芸学研究科  園芸学専攻
  • 1979/04 - 1983/03  Chiba University  Faculty of Horticulture  園芸学科

Association Memberships

  • IFAC   ISHS   JAPANESE SOCIETY OF AGRICULTURAL MACHINERY AND FOOD ENGINEERS   養液栽培研究会   THE SOCIETY OF AGRICULTURAL STRUCTURES, JAPAN   農業情報学会   JAPANESE SOCIETY OF AGRICULTURAL, BIOLOGICAL AND ENVIRONMENTAL ENGINEERS AND SCIENTISTS   園芸学会   日本農業気象学会   

Published Papers

  • Takehiko Hoshi
    Agricultural Information Research Japanese Society of Agricultural Informatics 30 (3) 121 - 130 0916-9482 2021/10 [Refereed]
     
    Elevated hydroponic strawberry culture has advantages in saving labor over conventional ground-based soil culture. As the growing beds stand off the ground, inputs and outputs of matter can be measured accurately. I developed a low-cost nutrient management system using a ubiquitous environment control system platform with open-source Arduino hardware for a total cost of about JPN 60 000 per set. The system precisely and continuously measures the volume and electric conductivity of the input and output nutrient solutions. Visualization of water and nutrient uptake by strawberries improves production through precise control of the hydroponic system. Results of practical tests over 2 years improved the management of strawberry culture. The system has been made open source as a smart agricultural tool to support small- to medium-scale greenhouses that grow strawberries in Japan.
  • Takehiko Hoshi
    The Journal of IEICE The Institute of Electronics, Information and Communication Engineers 104 (6) 526 - 531 2021/06 [Refereed][Invited]
     
    Research toward the application of electronic information and communication technologies to agriculture intensified inJapan from the 1980s with projects in areas, such as plant factories, plant biological information sensing, advanced environmental measurement and control systems, computer communication networks, and agricultural AI applications.Do the dramatic improvements in the cost performance of semiconductor devices in those days benefit even small and medium-sized greenhouse growers by bringing opportunities to improve labor and profitability through computerization?What are the remaining issues? Through what approaches may we expect them to be solved? This paper provides acomprehensive overview on the history, current situation, and issues concerning greenhouse farming systems based on the author’s experience in this field.
    ダウンロード
  • Takehiko HOSHI; Kenta UEDA; Yoshihiro TAKIKAWA; Takaya AZUMA
    Environmental Control in Biology 56 (4) 149 - 155 2018/10 [Refereed]
     
    A low-cost spectrometer, featuring a micro electro mechanical systems (MEMS) sensor, was designed and manufactured using digital fabrication techniques. The spectrometer was morphed into a zelkova leaf-shaped case using a three-dimensional printer. The control software, written in the Arduino sketch programing language, measured the flux of photons in the 400―800 nm range, at 1 nm resolution, every 5 min. The obtained data were saved on a micro SD memory card in the comma separated values format. The spectrometer continuously operated for more than 3 d using a type B universal serial bus micro connector and a 10 Ah mobile battery. Four manufactured spectrometers were installed inside and outside of a tomato canopy in the experimental greenhouse of Wakayama prefecture, and continuously measured the spectroscopic flux of photons for nine d. The quantitative changes in the phytochrome photoequilibrium in the tomato leaves were estimated using the data from the continuous spectroscopic analysis. The effect of pruning under leaves on the illumination in the tomato canopy was quantified in terms of the leaf area index. We expect that the proposed low-cost and high-mobility spectrometer will be used in plant production fields.
  • Ken-ichiro YASUBA; Hidehito KUROSAKI; Takehiko HOSHI; Takashi OKAYASU; Yoshiyuki TANAKA; Tanjuro GOTO; Yuichi YOSHIDA
    Environmental Control in Biology 56 (3) 107 - 112 1880-554X 2018/07 [Refereed]
     
    A program library for use on open-source hardware was developed in order to construct a low-cost environmental control system for greenhouses. The library facilitated the development of environmental sensing and control devices that conform to the protocols of the Ubiquitous Environment Control System (UECS). The open-source hardware used was the "Arduino Ethernet" and the "Arduino Mega 2560 with Ethernet Shield" microcontroller boards. UECS is a system for controlling greenhouse environments that communicates information via a local area network, and devices utilizing the library that we developed can perform the UECS defined communication tasks automatically. With the help of this library, device developers no longer need to program the communications aspects of the device and can concentrate on programming setting and control logic of the device. The library occupies about 29 kilobytes of the read only memory area of the target board. The library and associated open-source microcontroller boards are powerful tools for developing low-cost environmental control systems.
  • Takehiko Hoshi; Ken-Ichiro Yasuba; Hideto Kurosaki; Takashi Okayasu
    Automation in Agriculture - Securing Food Supplies for Future Generations InTech 2018/03 [Refereed]
  • HOSHI Takehiko; YASUBA Ken-ichiro; KUROSAKI Hideto
    Shokubutsu Kankyo Kogaku Japanese Society of Agricultural, Biological and Environmental Engineers and Scientists 29 (1) 28 - 28 2017 [Refereed][Invited]
     
    第28巻4号165ページの図に誤りがありました．
  • Takehiko HOSHI; Ken-ichiro YASUBA; Hideto KUROSAKI
    Shokubutsu Kankyou Kougaku 28 (4) 163 - 171 1880-2028 2016/12 [Refereed]
     
    One powerful solution to improve the productivity of protected horticultural facilities is environmental control. Greenhouse equipment using information and communication technology (ICT) has been implemented in environmental control systems. From the 1960s to the 1970s, fundamental research and development of environmental control systems for greenhouses were actively conducted. Environmental control systems employing microprocessors and PCs began to be introduced in Japanese commercial greenhouses in the 1980s. However, by 2012, only 1.41 % of total Japanese greenhouse area employed such systems. To create a smart greenhouse that employed ICT, a ubiquitous environment control system (UECS) was developed for practical use in 2004. In a UECS, each environmental measurement and control device in the greenhouse (ventilation window motor, heating device, etc.) with an embedded microprocessor is called an autonomous decentralized unit (node). The nodes are connected with each other through the Ethernet (IEEE803.2), and they control environments in a coordinated manner. We reviewed the present situation and prospects of UECS.
  • Andri Prima Nugroho; Takashi Okayasu; Masafumi Horimoto; Daisaku Arita; Takehiko Hoshi; Hidehito Kurosaki; Ken-ichiro Yasuba; Eiji Inoue; Yasumaru Hirai; Muneshi Mitsuoka; Lilik Sutiarso
    Agricultural Information Research Japanese Society of Agricultural Informatics 25 (3) 86 - 95 2016/10 [Refereed]
     
    The monitoring node is one of the most important system components in the remote and automatic measurement of environmental information. Simplicity, flexibility, and affordability are critical in agricultural applications. The objective of this study was to design and develop a low-cost and robust remote environmental monitoring node based on a microcontroller board with a wireless communication module and an over-the-air (OTA) update function for flexible node management. The monitoring system consists of a cloud-based global management subsystem and a local management subsystem for each monitoring node. The node was developed using the Particle Core, reprogrammable Wi-Fi development kit, which fulfills the requirements for monitoring node mentioned above. The performance evaluation of the stability and the OTA update function were conducted under two network conditions: (1) high-speed network and (2) regular mobile 3G-network as actual application setup. The stability and availability test observed over 95% of the “timely measurements”, a completed measurement within the specified time interval, 99.86% for the condition 1 under high-quality network, and 95.02% for the condition 2. The OTA firmware update process was completed in approximately 60 s. We concluded that the developed environmental monitoring node based on a low-cost microcontroller having internal Wi-Fi module and OTA update function has the potential to increase the simplicity, flexibility, and affordability of remote environmental monitoring node in agricultural applications.
  • Takehiko Hoshi; Shinnosuke Ochi; Tomonori Matsuyama; Ken-ichro Yasuba; Hideto Kurosaki; Takashi Okayasu
    Agricultural Information Research 25 (3) 79 - 85 1881-5219 2016/10 [Refereed]
     
    Although many kinds of low-cost, commercially available relative humidity (RH) sensors are used in greenhouses, it is not known whether they have sufficient weather resistance in that environment. We tested the weather resistance of 6 kinds of low-cost RH sensors in a tomato production greenhouse for 3 months. At RH > 90%, the values reported by the sensors were reduced by up to 4%. This reduced accuracy can pose problems, since high humidity influences transpiration, condensation, and disease incidence. When low-cost RH sensors are used in greenhouses, it may be necessary to allow for this deterioration.
  • Andri Prima Nugroho; Takashi Okayasu; Takehiko Hoshi; Eiji Inoue; Yasumaru Hirai; Muneshi Mitsuoka; Lilik Sutiarso
    COMPUTERS AND ELECTRONICS IN AGRICULTURE ELSEVIER SCI LTD 124 325 - 339 0168-1699 2016/06 [Refereed]
     
    This study focuses on the development and evaluation of a remote field environmental monitoring and control framework, implementing a local-global management strategy to overcome the unstable network connection in the rural area. The framework consists of environmental monitoring and control node as the local management subsystem (LMS), and the web data providing and system management as the global management subsystem (GMS) to establish a simple and flexible remote environmental monitoring and control based on a cloud platform. The supporting features are online and offline environmental monitoring, synchronization of system configuration, actuation, and offline management. Two field tests were conducted to verify its performances and functionalities, (1) environmental monitoring on tropical horticulture cultivation in Yogyakarta, Indonesia, and (2) implementation of the monitoring and control for automatic drip irrigation control based on soil moisture content for tomato. As the result of the first test, the developed framework could help to maintain the sustainability of environmental monitoring under unstable network connection over 80% availability of the data with local offline measurement up to 24% of the total entries. From the second test result, the framework could support the real-time monitoring and control of soil moisture content as well as increase the system flexibility in the adjustment of the system configuration remotely. The control system has 0.78% error (E) and 99.2% in-range soil moisture content (L < x(t) < U) measurement during the 10-days observation. We concluded that the proposed framework might become a useful tool for a simple remote environmental monitoring and control under unstable network connection in the rural area. The framework has the potential to be adopted in cloud-based tropical horticulture supporting system, aimed for long-term environmental monitoring and controlling local facilities. (c) 2016 Elsevier B.V. All rights reserved.
  • KUROSAKI, H; YASUBA, K; OKAYASU, T; HOSHI, T
    Agricultural Information Research 25 (1) 19 - 28 1881-5219 2016/04 [Refereed]
     
    The Arduino platform is suitable for the development of Ubiquitous Environmental Control System (UECS) nodes. However, its network capacity must be investigated to improve its reliability in practical use. In this study, we tested the UDP packet-receiving capacity of multiple combinations of Arduino platforms running on 16 MHz ATmega CPU and Ethernet communication shields. Test results showed that the mounted Ethernet controller was the primary determinant of packet-receiving capacity. The maximum receiving capacities for 200-byte UDP packets on W5100 and W5500 Ethernet controllers were 327 and 576 packets/second, respectively. Stress on the HTTP server response or on communication with an SHT75 humidity and temperature sensor lowered packet receiving capacity. Therefore, if a rapid response is required on a node, high-load processing must be eliminated. We estimated that the tested capacity of any Arduino platform was sufficient to control a small- or medium-scale greenhouse. In addition, if the packet communication area is adequately controlled, an Arduino platform could be employed in large-scale greenhouses. Sending packets to unused ports at an interval of 1,152 packets/second had no effect on receiving capacity, indicating that a method that would allow more nodes to coexist by isolating port assignments would be beneficial.
  • YASUBA, K; TANE, C; TANAKA, Y; GOTO, T; YOSHIDA, Y; KUROSAKI, H; OKAYASU, T; HOSHI, T
    Agricultural Information Research 25 (1) 12 - 18 1881-5219 2016/04 [Refereed]
     
    A Java class library was developed to construct a Ubiquitous Environment Control System (UECS), and the developed system was used to control the environment in a greenhouse using information communication. The library was able to implement the UECS communication protocol, so a developer could write a program without referring to the complicated communication protocol. Specifically, we created a program for operating a ventilation fan using data on air temperature that was received automatically via a local area network. In this case, only 45 lines of programming were needed, just 3.6% of the the number that would be needed to create an equivalent program without the library. Java programs can run on a variety of platforms, so the scope of the library’s application is wide. In addition, both the development of UECS devices and construction of UECS systems will be facilitated through the use of this library.
  • OKAYASU TAKASHI; ARITA DAISAKU; NUGROHO ANDRI PRIMA; HOSHI TAKEHIKO; YOSHINAGA TAKASHI; INOUE EIJI; HIRAI YASUMARU; MITSUOKA MUNESHI
    情報処理学会研究報告(Web) 2014 (CVIM-191(12)) 1 - 6 2014/02 [Refereed]
  • T. Hoshi; K. Suzuki; J. Imahara; K. Yasuba; T. Nanseki
    INTERNATIONAL SYMPOSIUM ON NEW TECHNOLOGIES FOR ENVIRONMENT CONTROL, ENERGY-SAVING AND CROP PRODUCTION IN GREENHOUSE AND PLANT FACTORY - GREENSYS 2013 INT SOC HORTICULTURAL SCIENCE 1037 627 - 634 0567-7572 2014 [Refereed]
     
    A nondestructive measurement system for continuously counting the average number of leaf layers (ANL) of a crop canopy was developed to evaluate the vegetative growth instead of the leaf area index (LAI). A virtual near-infrared light sensor with a peak between 700 and 800 nm was developed by calculating the difference in electrical current outputs of two low-cost Si photodiodes for detecting visible light and visible plus near-infrared light. Two virtual sensors were placed on the top and bottom of the crop canopy each, and apparent ANL as the value of the light path length was calculated from the measured values using the Beer-Lambert Law. The far red light transmittance of the leaves of most greenhouse fruit vegetables is approximately 60%. The ANL may be measured in up to approximately six leaves when a near-infrared light sensor with a 13.3 dB dynamic range is used. To measure more accurately the amount of received light from leaves that spreads in various directions, the virtual sensor was covered by a diffusion hemisphere made from a half of a Ping-Pong ball. The sensing system was installed in a device based on a ubiquitous environment control system (UECS), a type of decentralized autonomous computer measurement and control system for crop production in greenhouses. The measurement system was located and tested in muskmelon, cucumber, and tomato production greenhouses in Japan. The calculated ANL from measured daily cumulative optical sensing data for muskmelons was highly correlated (R-2=0.90) with LAI obtained manually. The correlation between ANL and LAI of the other tests was relatively high.
  • YASUBA KEN'ICHIRO; HOSHI TAKEHIKO; KANEKO SO; HIGASHIDE TADAHISA; OMORI HIROMI; NAKANO AKIMASA
    農業情報研究(Web) Japanese Society of Agricultural Informatics 22 (4) 247 - 255 1881-5219 2013/12 [Refereed]
     
    We developed an environmental measurement node that complies with application communication protocol version 1.00-E10 of the Ubiquitous Environmental Controlling System (UECS). The node consists of an Arduino Ethernet board with a newly developed electronic interface for the sensors in the measurement environment. A temperature and humidity sensor, a CO2 sensor, and a solar cell (as photosynthesis photon flux sensor) were connected to it for testing. Software that we developed to operate it made it easy to change settings and adapt sensors. The node was installed in a plant factory with sunlight and connected to a UECS via a LAN. The apparatus operated as a UECS node, formatting the measurement values in accordance with the UECS protocol. Measured values of air temperature, humidity, and CO2 concentration had estimated maximum errors of 1.17°C, 4.14%, and 49µmol mol-1, respectively. These values (though not those of the light sensor) were accurate enough for practical use. The hardware design, software details, and UECS protocol are presented in full.
  • OHATA RYOSUKE; HOSHI TAKEHIKO; WATANABE KATSUYOSHI; UEDA SHOJIRO; YASUBA KEN'ICHIRO; NANSEKI TERUAKI; HAYASHI MAKIO
    農業情報研究(Web) Japanese Society of Agricultural Informatics 22 (2) 96 - 102 1881-5219 2013/07 [Refereed]
     
    We proposed and developed a "one-stop service system to support protected horticultural production" in greenhouses based on the working standard for the Ubiquitous Environment Control System (UECS) standard. To record and share crop cultivation information in the form of an electronic field note, we developed and tested two applications based on the Android platform and the extended UECS communication protocol (UECS-CCM). We named the applications the UECS tweeting application (Tsubuyaki-appli) and the UECS tweet-sharing application (Kyoyu-appli). Tsubuyaki-appli sends extended UECS-CCM packets over a greenhouse local area network (LAN). The packets include a photo of the greenhouse crop and a short description, and are transmitted using mobile devices such as an Android smartphone. Kyoyu-appli receives the extended UECS-CCM packets and displays the received information by using a social network service interface. Our testing of both applications revealed that they promoted sharing of information among greenhouse workers, with the only requirement being a low-cost Android device. We expect that such applications will lead to further advances in greenhouse crop production technology.
  • Hoshi Takehiko; Ohata Ryosuke; Watanabe Katsuyoshi; Ueda Syojiro; Nanseki Teruaki
    Agricultural Information Research 農業情報学会 22 (4) 193 - 200 0916-9482 2013 [Refereed]
     
    We propose a mobile gadget-based system for managing greenhouse plant production based on the Ubiquitous Environment Control System—Common Corresponding Message (UECS-CCM) standard. The system allows greenhouse growers to manage production from a mobile electronic device such as a smartphone or tablet instead of a PC. To select the best device operating system (OS) to use, we developed and tested sample software to display environmental data collected and transmitted by the UECS from a climate monitor in a greenhouse, under Google Android OS and Apple iOS. Although the software performed similarly under each OS, differences in the reproducibility of display contents and in procedures for installation led us to adopt Android OS.
  • Development and popularization of a ubiquitous environment control system for greenhouses
    Takehiko Hoshi
    Clim. Bios. 11 F1 - F6 2011/09 [Invited]
  • Takehiko Hoshi; Ryosuke Ohata; Katsuyoshi Watanabe; Ryuji Osuka
    Proceedings of SICE Annual Conference 2011 2805 2805 - 2810 2011/09 [Refereed]
  • K. Suzuki; K. Yasuba; M. Takaichi; T. Takahashi; T. Hoshi
    VI INTERNATIONAL SYMPOSIUM ON LIGHT IN HORTICULTURE INT SOC HORTICULTURAL SCIENCE 907 269 - 276 0567-7572 2011 [Refereed]
     
    The system for producing many transplants in a narrow space is necessary for low node-order pinching and high planting density cultivation. Excessive elongation of stem usually happens in high density tomato transplants during nursery stage, so the control of the plant height is necessary. We researched the effect of supplemental lighting on the growth of young plants on the second nursery. Tomato seedlings were grown in the closed nursery system using fluorescent lamps for 28 days after sowing. Seedlings transferred to the second nursery system on 17 November 2008. This system is the NFT system to which the root zone of each plant was limited separately by root barrier sheet, and plants were arranged in 12.5x 12 cm spacing. The young plants were grown in this system for 2 weeks with supplemental lighting using ceramic metal halide lamps, with shading, and without shading and supplemental lighting. Some plants were arranged in 25x24 cm (low density plot). The dry matter weight of plants increased with supplemental lighting, but plant height did not chang. The height of plants was short in low density plots. Then, the effect of differences of light source on plant growth was researched. Red LED lighting reduced the stem elongation compared with the control. On the other hand, blue LED lighting increased the stem elongation a little. After second nursery, some nursery plants were grown in the NFT hydroponics system with third truss pinching and high planting density cultivation (6.25 plants m(-2)). However, the yields were the same among the plants that had undergone different processing in second nursery. The supplemental lighting during second nursery was effective to increase dry weights of shoot and root, and red LED lighting was effective to suppress the plant height, and to facilitate the transplant work, but little effective to increase fruit yield.
  • T. Hoshi; H. Higa; K. Goto; K. Niibori
    VI INTERNATIONAL SYMPOSIUM ON LIGHT IN HORTICULTURE INT SOC HORTICULTURAL SCIENCE 907 117 - 123 0567-7572 2011 [Refereed]
     
    High-quality seedling supply is essential for the production of tomatoes in greenhouses using high density (5 plants per m(2)) and continuous planting (8 cycles per year) with double-tiered beds and cultivation until the fourth truss, compared to the conventional case of annual planting until higher truss harvest. In this study, the seedling period from seed germination to fixed transplant size was divided into two stages. Seedlings were then placed into an artificial weather room with fluorescent lamps and then into a greenhouse with natural light until the seedling reached transplant size. In the latter periods of growth, the quality of the seedling deteriorated due to weak natural light in the rainy and winter seasons. Thus, a ceramic metal halide lamp (150 W 4,300 K) used for outdoor signboards that was able to uniformly illuminate a horizontal surface was attached to the greenhouse eaves to avoid the formation of shaded areas. A computerized lighting control system was also implemented to compensate for the PPF fluctuation of the natural light. The average PPF on the plant canopy was increased to 94.0 mu mol m(-2) s(-1) using supplemental lighting, and the input electric power density was 166 W m(-2). The planting density during this period was 108.6 plants m(-2) and the experiments were repeated four times. The average supplemental lighting time was 6.30 h d(-1). We found that the cumulative PPF on the plant canopy was increased by 33% using supplemental lighting, and its daily coefficient of variance (CV) was improved from 53 to 29%. The top dry weight of the seedling was increased from 17 to 35%, while the total plant height tended to be short. Supplemental lighting during the cultivation period also improved the quality of the tomato seedlings. The average total cost of supplemental lighting was 17.3 yen per seedling.
  • HOSHI TAKEHIKO; SHIBATA TAKAYASU; FUKASAWA KAZUMASA; FUKASAWA TOSHIO; TAKATSUJI MASAMOTO
    植物環境工学 日本植物工場学会 22 (4) 187 - 193 1880-2028 2010/12 [Refereed]
     
    An indoor, compact, low-cost vegetable production device that can be used within a living space is proposed for use by urban people wanting to produce their own vegetables. Based on measurements of living space environments, the limiting factor for such indoor vegetable cultivation is light intensity. Places where human beings can live comfortably do not need special controls for air temperature or CO2 concentration. To reduce costs, the device has only two control functions, hydroponics and artificial lighting. Bulb-type fluorescent lamps, which have the lowest lamp cost per a watt, are used as the light source. The device was designed and built to be produced at a unit cost of approximately 17,000 JPY. The external dimensions are 580 mm high, 590 mm wide, and 330 mm deep, and the device can cultivate up to six heads of leaf lettuce. The results from a series of cultivation tests to grow leafy vegetables show that the device is sufficiently simple that anyone can use it to cultivate vegetables. In the tests, electricity costs, which made up most of the running cost of the device, were approximately 900 JPY for one cultivation batch taking four weeks. Besides helping people easily cultivate their own vegetables, the device teaches the public about the vegetable production technology employed in hydroponic factories. Currently, we are working on developing a device that can be manufactured commercially.
  • HAMAMOTO HIROSHI; HOSHI TAKEHIKO; OJIMA KAZUSHI; YAMAZAKI KEISUKE
    植物環境工学 日本植物工場学会 22 (2) 95 - 99 1880-2028 2010/06 [Refereed]
     
    Comparison of the effects of supplemental lighting with fluorescent lamps inside the plant canopy on the yield of tomato plants (<I>Solanum lycopersicum</I> L.) was attempted under the following lighting schedules; A) 2 hours around sunrise, B) 2 hours before noon, C) 9 or 10 hours during the daytime, D) 2 hours before noon but only when sunlight was below 200 μmol m-2 s-1, and E) 9 or 10 hours during the daytime but only when sunlight was below 200 μmol m-2 s-1. Supplemental lighting increased yield in all schedules. Schedule C showed the largest increase, followed by B, and A. The limited lighting treatments (schedules D and E) were less effective than the corresponding unlimited treatments (schedules B and C). Schedule C was best in terms of increased yield in this experiment but was not efficient in terms of lighting cost. Schedule B was the most cost-effective option in this experiment but needed more decreasing of lighting costs for practical use.
  • YASUBA KEN'ICHIRO; KUROSAKI HIDEHITO; TAKAICHI MASUYUKI; OMORI HIROMI; KAWASHIMA HIROKI; HOSHI TAKEHIKO
    植物環境工学 日本植物工場学会 22 (1) 29 - 35 1880-2028 2010/03 [Refereed]
     
    We developed a computer-based environmental control system that adjusts the roof window angle and applies mist to optimize the air temperature and humidity in a naturally ventilated greenhouse managed by a ubiquitous environmental control system (UECS). The window angle is adjusted every 2 min to keep the enthalpy in the greenhouse at 60 kJ kg-1, equivalent to air conditioning at 23°C and 82% relative humidity (RH). The rate of ventilation required to keep the enthalpy at 60 kJ kg-1 is calculated from the air temperature and RH inside and outside the greenhouse, and solar radiation outside by the heat balance method, and the roof windows are adjusted accordingly. Mist is sprayed at the same time if the RH is less than the target RH. The misting is stopped when the target RH is reached or after 90 s of continuous spraying.<BR>The environment was controlled between 10:00 and 14:00 from 1 to 6 November 2008. The average air temperature was 23 to 24°C, and the average RH was less than 2% higher than the target RH. On 2 November, the average enthalpy was 60.2 kJ kg-1 inside the greenhouse and fluctuated markedly, but it was much lower and more steady outside. More precise control would require shortening the adjustment interval. The ventilation rate was kept under 1 m3 m-2 min-1, which would be suitable for CO2-enrichment treatment.
  • YASUBA KEN'ICHIRO; KUROSAKI HIDEHITO; TAKAICHI MASUYUKI; OMORI HIROMI; KAWASHIMA HIROKI; HOSHI TAKEHIKO
    植物環境工学 日本植物工場学会 21 (4) 162 - 168 1880-2028 2009/12 [Refereed]
     
    A real-time calculating node for transmitting ventilation and evaporation rates, which are useful information for the control of mist cooling in a greenhouse, was developed for an Ubiquitous Environmental Controlling System (UECS). Information about the status of environmental controlling devices (e.g., the amount that the shade curtain is open) and sensor readings (e.g., for air temperature) are sent by broadcast delivery over a local area network (LAN). The node receives packets with information on air temperature inside and outside the greenhouse, air relative humidity inside and outside the greenhouse, solar radiation outside the greenhouse, and the degree of opening of the shade curtain, and then calculates the ventilation rate and evaporation rate by the heat balance method. In addition, it calculates the weight of misting water necessary to increase the relative humidity in the greenhouse to 100% and forecasts the air temperature at 100% humidity. It also calculates the weight of misting water required to drop the air temperature to a preset value and forecasts the relative humidity at that temperature. The node transmits the calculated values by the UECS communication standard. The user easily receives the ventilation rate and other useful information about mist cooling in real time using this node.
  • HOSHI TAKEHIKO; SHINTANI KEIJI; HAYASHI YASUMASA; TAKAICHI MASUYUKI
    植物環境工学 日本植物工場学会 19 (2) 96 - 100 1880-2028 2007/06 [Refereed]
     
    To detect moisture by dew condensation, precipitation and fog cooling in plant production,an electric resistance-type wetness detector was developed and tested. The detectingelectrode was produced by precise electronic circuit board technology using photoengraving.The electrode pattern was applied to the fractal curve, and the electrode gap was designatedas 250 μm. Tests using a trial manufactured detector were able to detect dew condensationwith high sensitivity, and worked effectively as a feedback sensor for the controller of thefog cooling system in greenhouses. The manufacturing cost of a case of 50 wetness detectioncircuit boards was 4830 yen per board.
  • HOSHI TAKEHIKO; SHIOZAWA EICHI; SHINMA KEITA; TAKAICHI MASUYUKI; HIRAFUJI MASAYUKI
    農業情報研究 農業情報学会 16 (1) 29 - 36 0916-9482 2007/03 [Refereed]
     
    To leverage Field Servers in protected horticulture, a Java application program, BixFieldRecordServer (BFRS), was developed and tested. BFRS operated on personal computers, and recorded the environment and image data using information exchange standard format on XML for plant production (BIX-pp) from some Field Servers and network cameras through the Internet or greenhouse LAN automatically. BFRS also was able to record the other agricultural producing data, which was plant growth, farm working, using agricultural chemicals, amount of products etc., into the same BIX-pp format file using manual input form and CSV format file. We could easily generate the BIX-pp format file of integrated production history information in protected horticulture by BFRS. BFRS was tested in two actual plant production greenhouses to confirm the operation. By the results of tests, it was clarified that BFRS allowed growers in protected horticulture to leverage Field Servers. The growers who own Field Servers can download BFRS free of charge at http://w3.fb.u-tokai.ac.jp/bix-pp to record their production history information.<br>
  • HOSHI TAKEHIKO; SHIOZAWA EICHI; SUZUKI TAKAFUMI
    植物環境工学 日本植物工場学会 17 (3) 150 - 156 1880-2028 2005/09 [Refereed]
     
    As an informational infrastructure for various utilizations of records on plant production and accomplishments of advanced plant production systems, BIX-pp (Bio-Information Exchange for Plant Production) which is an integrated information record format in a setting of plant production, has been proposed. The features of the format were evaluated using three application computer programs for BIX-pp. BixComposite is a computer program to compound and display plant production information and was able to vividly re-experience the past plant production by simple input of a BIX-pp file. A BIX-pp version SearchTool analyzes the causes of fluctuation and constructs a model for predicting daily plant production volumes, the labor involved in the conventional pretreatment to associate and unify various kinds of input data was mitigated using BIX-pp. Since informational structure and its definition can also be input to application programs using the BIX-pp, the programs were able to discriminate the input information and automatic execution was enabled. Records previously compiled the Comma Separated Value (CSV) format file can easily be converted using RecordConverter, which is a data conversion program that translates between the CSV and BIX-pp formats. Thus, records can be easily shifted to BIX-pp. Using the BIX-pp, use of plant production records for advanced plant production is expected to be enhanced.
  • SUZUKI TAKAFUMI; HOSHI TAKEHIKO; WATANABE TSUTOMU
    農業情報研究 Japanese Society of Agricultural Informatics 12 (4) 307 - 314 0916-9482 2003/12 [Refereed]
     
    A computer program for analysis of agricultural production in greenhouses was developed. This search tool analyzes a greenhouse's environmental data measurements and past plant production data to identify major factors influencing daily production, and to isolate those factors' period of influence. A prediction model for daily production based on a topological case-based modeling (TCBM) algorithm was also constructed. Stepwise multiple regression analysis was employed to choose major factors for the daily production amount prediction model. Results from the search application can be presented using 3D graphs so that program users can understand the relationship between environmental factors and daily production. A test was performed using data from a tomato production greenhouse (approx. 3000 m2 floor area). The search tool identified the major factors as working hours on harvest day, average inside daily minimum air temperature from 7 to 8 days before the harvest day, average inside daily amount of solar radiation from 2 to 4 days before the harvest day, outside average daily amount of solar radiation from 8 to 11 days before the harvest day, and inside average daily difference in air temperature 6 days before the harvest day. The constructed model predicted daily tomato production amount with a relative error of about 30%.
  • HOSHI TAKEHIKO; SUZUKI TAKAFUMI; SHIOZAWA EICHI; KAMEOKA TAKAHARU
    農業情報研究 Japanese Society of Agricultural Informatics 12 (4) 327 - 335 0916-9482 2003/12 [Refereed]
     
    To advance the computerization of plant production, all information related to a plant production was unified as a standard XML document. The proposed standard was named BIX-pp. To evaluate it, a set of information related to hydroponics spinach production in one Tokai University greenhouse was converted into sample BIX-pp data, and four kinds of BIX-pp correspondence application programs were made. Evaluation results confirmed that BIX-pp is capable of unifying all plant production information. Moreover, two application programs were developed and tested: a record converter, for converting CSV files into BIX-pp format; and a property editor, for editing the attribute information (cultivar, greenhouse, grower etc.) on plant production. To confirm the potential of BIX-pp, and to encourage its use by many people in more fields, the entire contents of the proposal were made available to the public at http://w3.fb.u-tokai.ac.jp/BIX-pp.
  • HOSHI TAKEHIKO; SUZUKI TAKAFUMI; UMEDA ATSUSHI; FUSE JUN'YA; TSUTSUI HIROAKI
    植物工場学会誌 JAPANESE SOCIETY OF AGRICULTURAL, BIOLOGICAL AND ENVIRONMENTAL ENGINEERS AND SCIENTISTS 15 (1) 20 - 26 0918-6638 2003/03 [Refereed]
     
    A plant production support system was developed to search for major factors influencing on plant production and to predict daily harvest. A case study on cut-rose production using rock -wool hydroponics was performed. Daily environmental measurement data and daily production records were recorded for 260 days on two kinds of splay roses and analyzed. The squared correlation coefficients between all the past averaged environmental data and the amount of daily production were calculated, and the coefficients were then visualized with 3-D graphs. Major factors having influence on the cut-rose production system were selected from the data with high correlation coefficients by step-wise multiple regression analysis and cluster analysis. In a testing greenhouse, four key factors were identified : the number of produced cut flowers from 1 to 2 days before the harvest day, the number of produced cut flowers from 37 to 55 days before the harvest day, the daily difference in inside air temperature from 27 to 49 days before harvest and the daily minimum inside air temperature from 50 to 85 days before harvest had influence on the number of produced cut flowers in the case of cultivar "Little Silver". A prediction model was constructed by topological case-based modeling (TCBM) using the chosen factors. The average error in predicted production was ±15.4 cut flowers day<SUP>-1</SUP> (±28.5%). In the case of cultivar "Fantasy", the average error of the predicted production was ±14.7 cut flowers day<SUP>-1</SUP> (±23.2%). The process of identifying the major factors might be a useful method to identify the characteristics of plant production in an individual greenhouse. The computerized prediction model of daily harvest would help growers to promote business and trade to their advantage.
  • HOSHI TAKEHIKO; HAYASHI YASUMASA; YOKOI SHINGO; HASEGAWA TOMOYUKI; KOZAI TOYOKI
    植物工場学会誌 日本植物工場学会 14 (3) 157 - 164 0918-6638 2002/09 [Refereed]
     
    An environmental control system proposed here was named the decentralized autonomous production management system (DAPMS). It was constructed based on the idea that each plant individual itself could require the desirable environment to the plant production equipments and growers to attach small computer chips. In the DAPMS, each plant individual is an element whose production state and goal are known. A potential function based on this information expresses how well the goals of each element are satisfied. The global discipline in the DAPMS was kept using the potential function in each plant individual. A simulation model of the DAPMS was developed to test this idea. In the simulation, different parts of the growing room were characterized by different environmental variables to reflect the situation in a real transplant production facility. Each plant individual was moved (for example, by a robot) to the place within the growing room that was best suited for its growth. A reasonable arrangement of the plant individuals was obtained by the DAPMS, even when changes were made in the scale of the facility, the number of plants, and other variables. The DAPMS was applied to cell tray production of sweetpotato transplants in a closed-type transplant production system. Even though the growing room had uneven environmental conditions and a variety of transplant individuals, the DAPMS was able to provide a desirable environment to the transplant individuals and to produce transplants with a uniform number of leaves.
  • T Hoshi; T Sasaki; H Tsutsui; T Watanabe; F Tagawa
    COMPUTERS AND ELECTRONICS IN AGRICULTURE ELSEVIER SCI LTD 29 (1-2) 149 - 160 0168-1699 2000/10 [Refereed]
     
    A daily harvest prediction model for an individual plant production system is proposed. The model is based on data mining and topological case-based modeling. Environmental measurement data that was logged by an environmental control computer in a greenhouse, daily working hours and daily harvest records were averaged for each period. Each averaged data was correlated with harvest on the object day. The calculated squared correlation values were visualized with the 3D graphs. The graphs helped to understand the relationship between the daily harvest and each factor that influenced the harvest. The model was applied to a greenhouse for producing cherry tomatoes. Four variables, which were harvest in the past, the numeric code of the day of the week, total working hours and daily difference of air temperature. were chosen for developing the predicting model in the data mining process. The chosen data was quantized and placed on the case-base cells in the computer memory. The topological case-based modeling used the principle of continuous mapping to predict the daily harvest. The least error of the predicted yield by the developed model was +/- 31 kg day(-1) (26%) in the greenhouse. (C) 2000 Elsevier Science B.V. All rights reserved.
  • Design concepts of computerized support systems for large-scale transplant production
    T.Hoshi; Yasumasa Hayashi; Toyoki Kozai
    Kluwer academic publishers, Transplant Production in the 21st Century 38 - 43 2000/10 [Refereed]
  • SHINODA TSUMUGU; HOSHI TAKEHIKO
    農業情報研究 Japanese Society of Agricultural Informatics 9 (1) 35 - 42 0916-9482 2000/06 [Refereed]
     
    To judge whether air temperature condition is suitable for plant cultivation, the software that analyzes measured data in environmental measurement and control systems of greenhouses was developed for personal computers. Result of judgement in the software is expressed using a face chart that is easy to understand for human beings. The standard of environment measurement control computer remote manipulation protocol in Japanese agriculture was adopted to the software in the communication system between the environmental measurement and control systems and personal computers. The software operation in the corner of user's computer display helped to understand degree of cultivation suitable of temperature environmental in a greenhouse. Developed software and source program will be distributed with free of charge using the Internet in future.
  • HOSHI TAKEHIKO; FUSE JUN'YA; WATANABE TSUTOMU; OKUYA TSUYOSHI; HAYASHI YASUMASA; KURASHIMA TOSHIYUKI
    植物工場学会誌 JAPANESE SOCIETY OF AGRICULTURAL, BIOLOGICAL AND ENVIRONMENTAL ENGINEERS AND SCIENTISTS 11 (3) 157 - 164 0918-6638 1999/09 [Refereed]
     
    Computerized environmental measurement and control systems for greenhouses have been developed and used in Japan since 1974. In 1995, 2566 sets such systems operated for protected plant production in Japan, and the total floor area of computer controlled greenhouses was 3.44 km<SUP>2</SUP>. The selling systems of more than 20 corporations could not be operated by the same software in the personal computers connected with the systems, because the systems do not have the common remote operation standard from personal computers. We realized that a more convenient measurement and control for advanced plant production is indispensable to develop advanced software in personal computers. Allowing remote operation of any systems by the same software decreases software development costs and increases the usefulness of the systems and software developers. Therefore, we proposed a standard operation protocol for the environmental measurement and control systems. The standard operation protocol was determined by the following process; (1) A questionnaire research, (2) Testing by a prototype system, (3) Hearing from concerned makers, and (4) Verification of the protocol practicality. Elements of the standard operation protocol were (1) Transferal standardization, (2) Identical standardization, and (3) Semantic standardization. The primary concepts to perform the protocol functions were a virtual controller and a map file. The virtual controller permitted the realization of the protocol by only emulating software. The map file worked unification and localization of measurement and control items easily. The practicality of the standard operation protocol was confirmed by verification tests. It is considered that standard operation protocol contributes to promote development of personal computer software for remote measurement, control, and analysis of the greenhouse environment.
  • TANAKA Akio; ARAI Masahiko; MATSUSHITA Hiroaki; HOSHI Takehiko; KAGEYAMA Yoshiyuki; KOBAYASHI Yosihiro; YAMAMOTO Koichi
    The Bulletin of School of High-Technology for Human Welfare, Tokai University Tokai University 8 49 - 58 0917-7612 1999/03 [Refereed]
     
    Contemporary society is information-oriented. It is important to acquire computer literacy not only for studying in a university but also for working in a company after graduation. The syllabus for the exercise in computer literacy has been the same for all four departments in the ,School of High Technology for Human Welfare in Tokai University since 1997. All resident lecturers give newly enrolled students the exercise, which is a closely packed series. To evaluate the effect of the exercise, questionnaires are distributed to all of the students. The questionnaires are analyzed by the principal component analysis of the correlation matrix of the normalized characteristics. As a result, three main factors are extracted, which are related to how to teach, the syllabus and how to learn in order of weight. These factors are generally thought to play an essential role in the exercise. The students need continuously to brush up their skills in computer literacy after the exercise. As Internet use increases, teaching the network etiquette (netiquette) becomes more important in the exercise.
  • HONJO Tsuyoshi; HOSHI Takehiko; TAKEUCHI Shinya; FUSE Junya
    Journal of The Japanese Institute of Landscape Architecture The Japanese Institute of Landscape Architecture 60 (5) 611 - 614 1340-8984 1997/03 [Refereed]
     
    In the present study, prototype of environmental information system using Internet or Internet protocol was developped. The distribution of the data using the protocols or software of Internet is preferable instead of conventional communication software or fax, considering the widespread availability of Internet. The diagram of the system is shown in Fig. 1.
    One of the functions of the system was data transfer by mail. Software for data transfer from data acquisition computer to WWW system by E-mail was developped using PPP and SMTP. By this method, data acquisition was made possible in the area where LAN is not constructed.
    Another function was data distribution by WWW and 3D visualization on WWW. WWW server was made and terrain rendering software with CGI scripts were developped for the 3D visualization. Landsat data or meteorological data like temperature, relative humidity are overlaid with digital elevation model and 3D images were shown on the home pages.
  • HAYASHI YASUMASA; HOSHI TAKEHIKO
    植物工場学会誌 JAPANESE SOCIETY OF AGRICULTURAL, BIOLOGICAL AND ENVIRONMENTAL ENGINEERS AND SCIENTISTS 7 (4) 204 - 209 0918-6638 1995/12 [Refereed]
     
    An irrigation mobile robot was developed and tested for saving labor and automatic soil water control.<BR>The robot was consisted of a running unit, a control unit and an irrigation unit. Soil moisture was measured by the electrical resistance sensor which was attached to the mobile arm with irrigation nozzle. The infrared reflectors which were recognized by the infrared sensors of the robot indicated the measurable and irrigable positions of individual plants. The robot was programmed to repeat following operations : <BR>1. Move the robot to the position of the infrared reflector;<BR>2. Insert the soil moisture sensor into the soil, and measure the soil moisture;<BR>3. If the measurement value of the soil moisture was less than the value of satisfied soil moisture, then irrigate the soil.<BR>The result of performance tests showed that the robot could control the soil moisture near by individual plants automatically. It was estimated that 4 sets of the robot could control the soil moisture in greenhouse muskmelon cultivation having 1000 m<SUP>2</SUP> floor area.
  • MIMURA SO; HOSHI TAKEHIKO; TAKATSUJI MASAMOTO
    植物工場学会誌 JAPANESE SOCIETY OF AGRICULTURAL, BIOLOGICAL AND ENVIRONMENTAL ENGINEERS AND SCIENTISTS 7 (3) 151 - 155 0918-6638 1995/09 [Refereed]
     
    It was cleared that the growth of spinach which was cultivated in the nutriculture by addition of sodium chloride was better than no sodium chloride growth. In the case of 2.527 kg/m<SUP>3</SUP> sodium chloride addition was superlative growth in the experiment. The spinach top flesh weight in the case at 29 days after sowing was heavier than top flesh weight of control spinach by 3.58 g/plant.
  • TAKATSUJI MASAMOTO; TSUJI TAKAYUKI; SEKI YOSHINORI; HOSHI TAKEHIKO
    植物工場学会誌 JAPANESE SOCIETY OF AGRICULTURAL, BIOLOGICAL AND ENVIRONMENTAL ENGINEERS AND SCIENTISTS 7 (3) 163 - 165 0918-6638 1995/09 [Refereed]
     
    A plant growth experiment using high-intensity visible light-emitting diodes was carried out for lettuce by changing the red/blue ratio (<I>R</I>/<I>B</I>). The result showed that the growth for <I>R</I>/<I>B</I>=10 was the largest compared with <I>R</I>/<I>B</I>=5 and 20 cases for both fresh and dry weights, and even more favorable than the growth under metal-halloid lamps.
  • HOSHI TAKEHIKO; TAKIGUCHI TAKESHI; TAKATSUJI MASAMOTO
    植物工場学会誌 The Laser Society of Japan 7 (1) 1 - 6 0918-6638 1995/03 [Refereed]
     
    In comparison with the numerical data of fresh weight or size of plant, its color image data of plant growth gives us much qualitative information on the plant factory products. Handling of the images in the environmental control system in the plant factories was discussed to realize quality control and intentional production.
    Morphing algorithm was used to obtain continuous morphological response of affected by the environmental change from two distinctive real growth images. The prototype system was developed using spinach (Spinacia oleracea L. cv. "Lead") growth images under cultivating different PPFD. The morphing algorithm produced 23 snapshots as intermediate image from the two spinach growth images. The whole image was installed in the environmental control system for spinach production.
    The users could decide the fitting PPFD control setpoint based upon interactions between the spinach growth image and the artificial lighting cost. It is considered that the result shows a possibility to handle plant growth information in the environmental control systems.
  • Takehiko Hoshi; Takeshi Takicuchi
    Journal of Agricultural Meteorology 養賢堂 51 (2) 123 - 130 1881-0136 1995 [Refereed]
     
    Leaf movement together with growth of vegetables was continuously measured by two video cameras and a three-dimensional image processing system. In the experiment, the leaf movement of spinach (Spinacia oleracea L. cv. “Lead”) from 10 to 24 days after seeding in two different photosynthetic photon flux densities (PPFD) was observed. A diurnal movement in spinach leaves was observed of both high and low PPFD. Spinach folded all the leaves in the dark period and spread the leaves in the light period. The amplitude of the diurnal movement showed a tendency to increase with high PPFD and increasing growth of the leaf blade. An irregular falling-rising movement due to infirm growth and a periodical swing movement with 3 hours on several leaves was also observed at low PPFD. It is considered that the physiological condition of spinach affects the kind and amplitude of the movement. The experimental results indicate that the measurement of the movement is a possible method to monitor vegetable growth in environmental control systems. © 1995, The Society of Agricultural Meteorology of Japan. All rights reserved.
  • HOSHI TAKEHIKO; TAKATSUJI MASAMOTO; OKANO TOSHIAKI; SEKIYAMA TETSUO
    植物工場学会誌 JAPANESE SOCIETY OF AGRICULTURAL, BIOLOGICAL AND ENVIRONMENTAL ENGINEERS AND SCIENTISTS 5/6 (2/1) 15 - 22 0918-6638 1994/03 
    A plant transportation system for increasing growing space was developed and its performance was tested for a year in a plant factory having 8 hydroponic beds. The system consisted of movable cultivation baskets, a basket carrier and two basket pushers. The hydroponic bed which is 37. 2 m length by 2. 0 m width in size had capacity for the admission of 45 baskets. The basket was planted with 860 plants at the maximum. The baskets were suspended on the both longer edges of the bed with wheels. The carrier which is a microcomputer-controlled electric car carried 2 baskets to the working space on a side of the bed automatically. The pusher pushed out the baskets by an oil pressure cylinder after planting or spacing or harvesting in the working space.<BR>The plant transportation system performed well in the plant factory. A set of developed the system could manage 19000 plant·day<SUP>-1</SUP> spinach production of 1640 m<SUP>2</SUP> plant growing space in 8 hour·day<SUP>-1</SUP> working hours. The results of practical test suggested that the 95% of floor area was available for plant growing space.
  • HOSHI Takehiko
    Chiba University, Doctoral dissertation 107 1 - 109 1994/01 [Refereed]
  • Development of an Expertsystem Using Image Database for Diagnosing Plant Protection
    T. Hoshi; T. Abe; K. Nuki
    Acta Horticulturae 319 635 - 640 1992/07 [Refereed]
  • HOSHI Takehiko
    農業気象 47 (4) 99 - 104 1992/03 [Refereed]
  • HOSHI TAKEHIKO
    植物工場学会誌 JAPANESE SOCIETY OF AGRICULTURAL, BIOLOGICAL AND ENVIRONMENTAL ENGINEERS AND SCIENTISTS 3 (2) 129 - 136 0918-6638 1992/03 [Refereed]
     
    In plant growth factories, it is necessary that we use computer environmental control systems for integrate control and continuous plant production. Development of computer software for advanced the environmental controllers is important to produce high quality plants and to save production costs. An environmental control software development support system with using object-oriented programming techniques was developed and tested. Smalltalk/V and PC-9801 desktop micro-computer (CPU : i80386) were used for the development support system implementation. Four classes were defined for constructing environmental controller model of the development support system.
    The results of several tests suggested that the development support system with excellent graphic user interface had sufficient performance for testing advanced environmental control algorithms and debugging environment control software. It is considered that high reusability of the object-oriented programming techniques helps accumulation of many pieces of developed environmental control software to make large software property for development advanced the environmental controllers.
  • Toyoki Kozai; Takehiko Hoshi
    Future Generation Computer Systems 5 (1) 131 - 136 0167-739X 1989 [Refereed]
     
    Some ideas on how to integrate recent rapid technical advances in computer application, biotechnology, and natural energy utilization are proposed. Then, outlines are described of (1) a hierarchically distributed knowledge-based information system for controlling a greenhouse complex, (2) an expert system development software system: MICCS, and (3) a tomato crop disease diagnosis expert system developed using MICCS. © 1989.
  • Takehiko Hoshi; Toshiaki Okano; Hitoshi Terazoe; Toshikazu Yoshihara; Hiroshi Saiki
    Journal of Agricultural Meteorology 養賢堂 45 (2) 99 - 104 1881-0136 1989 [Refereed]
     
    Nutrient solution in hydroponics is usually covered with the shading material, plate or film. A hydroponic vegetable production system which uses a movable vegetable supporting mechanism for varying the space among vegetables according to the growth stage, called “spacing”, was developed. For easy spacing, it is desirable not to use the shading material on the nutrient solution. Then, the nutrient solution is exposed to the light. There are a number of unclarified points concerned with the effects of the lighted nutrient solution on vegetables growth. Two experiments were performed. In experiment 1, to observe the effects on vegetables growth, spinach (Spinacia oleracea) and Senpoh-sai (Brassica x hybrida) were planted in two hydroponic beds. One bed was covered with the shading plate to keep the nutrient solution dark, and the other bed was not covered to expose the solution to the light. In experiment 2, to investigate hourly changes of the composition of the nutrient solution, the nutrient solution was illuminated with white fluorescent lamps. The top fresh weight of spinach 17 days after transplanting to the lighted nutrient solution decreased to 36% of the control. The primary cause of vegetable growth inhibition was considered to be iron deficit induced by changing of soluble iron (EDTA-Fe) into insoluble one (FePO4). 94% of soluble iron in the nutrient solution under the lighting intensity of 240 μmol/m2/sec changed into insoluble iron for 42 hours. When the lighting intensity in the nutrient solution is reduced to 11.8 μmol/m2/sec by shading, the change of soluble iron into insoluble one is controlled at 5% increase per day compared with case of quite dark condition. These results will provide clues for studying on soluble iron condition of nutrient sterilization using ultra violet lay and tissue culture medium of a transparent vessel. © 1989, The Society of Agricultural Meteorology of Japan. All rights reserved.
  • Development of hydroponic system and adaptation of microcomputers for a commercial size vegetables factory
    T.Okano; T.Hoshi; H.Terazoe
    Acta Hort. 230 343 - 348 1988/09 [Refereed]
  • Okano,T; Hoshi,T; Sekiyama,T
    Acta Hort. 229 353 - 359 1987/06 [Refereed]
  • 星 岳彦; 古在 豊樹
    農業気象 養賢堂 42 (1) 45 - 50 0021-8588 1986/06 [Refereed]
  • Takehiko Hoshi; Toyoki Kozai
    Acta Hort. 148 301 - 308 1984 [Refereed]

Books etc

  • Takehiko Hoshi (Joint work4.2 Environmental control systems)Asakura Publishing Co. 2022/04 9784254410433 188 142-152
  • The latest agricultural technology -ornamental plants- vol.12
    Takehiko Hoshi; Rural Culture Association Japan (Joint workSmart greenhouse horticulture by environmental measurement and control)Rural Culture Association Japan 2020/03 9784540190599 228 39-47
  • New smart agriculture
    HOSHI Takehiko (Joint editor第3章スマート化技術の現状と展望 第4章6節施設園芸・植物工場)農林統計出版・農業情報学会編 2019/05 9784897324074 500 33-73 120-135
  • 星 岳彦 (Joint workUECSスマート化による地域中堅園芸施設の経済性の向上)生物系特定産業技術研究支援センター 2019/04 pp. 20 1-4
  • Postharvest Engineering Dictionary
    HOSHI Takehiko (ContributorICT, DO, EC)Asakura Books 2019/01 9784254410396 413 80-81,104-107
  • ICT農業の環境制御システム製作
    星 岳彦 (Joint workUECSとは何か pp.8-13)誠文堂新光社 2018/08 9784416618714 151 8-13
  • 施設園芸・植物工場ハンドブック
    星 岳彦 (Contributor第Ⅷ部 施設園芸とICT利用 pp.346-349)農文協 2015/05 9784540151019 569 346-349
  • スマート農業(農業情報学会編)
    HOSHI Takehiko (Joint editor施設園芸・植物工場のスマート化 pp.170-171)農林統計出版 2014/08 9784897322995 399 170-171
  • よくわかる農業施設用語解説集
    HOSHI Takehiko (Joint editor8章先端的計測･IT関係 pp.158-175)筑波書房 2012/09 9784811904085 260 158-175
  • Industrial of Agriculture(韓国語版)
    HOSHI Takehiko (Contributor施設園芸の高度化を目指すユビキタス環境制御システム pp.68-75)RGB press 2011/04 9788996343172 233 68-75
  • 太陽光型植物工廠
    HOSHI Takehiko (Contributor第6章 U化的環境控制系統)豊年社 2011/02 9789579157490 164 85-104
  • 植物工場大全
    HOSHI Takehiko (Contributor施設園芸の高度化を目指すユビキタス環境制御システム)日経BP社 2010/08 9784822231200 191 54-59
  • 太阳光利用型植物工厂
    HOSHI Takehiko (Contributor第6章 普及环境控制系統)中国農業出版社 2010/08 9787109137059 123 65-79
  • 植物工場とその照明技術
    HOSHI Takehiko (Contributor第2章第3節 植物工場における制御技術)サイエンス&テクノロジー 2009/12 9784903413778 303 58-74
  • 太陽光型植物工場
    HOSHI Takehiko (Contributor第6章ユビキタス環境制御システム)オーム社 2009/11 9784274067877 186 97-120
  • 植物工場ビジネス戦略と最新栽培技術
    HOSHI Takehiko (Contributor第2章第3節 植物工場における制御技術)技術情報協会 2009/09 9784861042966 332 58-74
  • 次世代センサハンドブック
    HOSHI Takehiko (ContributorII編10章農業システム10.3植物生体計測)培風館 2008/07 9784563067687 1050 934-942
  • 新農業気象・環境学
    HOSHI Takehiko (Contributorコンピュータ支援システム)朝倉書店 2005/06 209 181-185
  • 新編 農学大辞典
    T. Hoshi (Contributor情報ネットワークの活用)養賢堂 2004/03 1786 1710-1711
  • 新農業環境工学
    HOSHI Takehiko (Contributorコンピュータ工学)養賢堂 2004/03 274 224-225
  • 新農業情報工学
    HOSHI Takehiko (Contributor自律分散システム)養賢堂 2004/03 289 114-115
  • 五訂施設園芸ハンドブック
    HOSHI Takehiko (Contributor第Ⅶ部 施設園芸とIT(情報利用技術)・第1章 IT利用による施設園芸の展開)園芸情報センタ 2003/03 626 306-310
  • 食品加工の新技術
    HOSHI Takehiko (Contributor植物工場(第17章)シーエムシー 2000/11 288 242-258
  • 農業情報化年鑑2000
    HOSHI Takehiko; KATAGIRI Anna (Contributor農業インターネット動向)農文協 2000/03 247 66-69
  • 農業における新しい情報化技術
    HOSHI Takehiko (Contributor第2章農業におけるインターネット利用)農業電化協会 2000/03 215 23-50
  • Design Concepts of Computerized Support Systems for Large-scale Transplant Production
    Transplant Production in the 21st Century 2000
  • 閉鎖型苗生産システムの開発と利用
    古在豊樹; 星岳彦 (Contributor14章閉鎖苗生産システム・基本モジュールの概念設計)養賢堂 1999/10 191 112-128
  • 農業情報化年鑑1999
    HOSHI Takehiko (Contributor施設環境計測制御システム pp.72-75)農文協 1999/01 309
  • 農業情報化年鑑1998
    HOSHI Takehiko (Contributor)施設環境計測制御システム pp.68-72)農文協 1998/10 317
  • 四訂施設園芸ハンドブック
    HOSHI Takehiko (Contributor第１章 コンピュータによる施設園芸の展開／第２章 インターネットの利用 pp.230-233, pp.256-261)園芸情報センタ 1998/03 582
  • 新農業経営ハンドブック
    HOSHI Takehiko (Contributor農村の情報化)社団法人全国農業改良普及協会 1998/03 1067 906-915
  • Artificial Intelligence in Agriculture 1998
    PERGAMON(Elsevier) 1998
  • 植物工場ハンドブック
    HOSHI Takehiko (Contributor7章周辺技術と未来技術、コンピュータの高度利用、pp.235-241)東海大学出版会 1997/12
  • 新編農業気象用語解説集
    HOSHI Takehiko (Joint editor統計・情報処理、予測・予報、pp.217-244)日本農業気象学会 1997/06 313
  • 農業情報化年鑑1997
    HOSHI Takehiko (Contributor施設環境計測制御システム pp.88-91)農文協 1997/01
  • 生物生産機械ハンドブック
    HOSHI Takehiko (Contributor14編5章工場的生産方式5.1野菜の工場的生産機器装置、pp.947-949)コロナ社 1996/02
  • 農業情報化年鑑1996
    HOSHI Takehiko (Contributor栽培技術面での活用 pp.76-79)農文協 1996/01
  • 生物環境調節ハンドブック
    HOSHI Takehiko (Contributor応用的ソフトウエア pp.390-394)養賢堂 1995/04 585
  • 農業情報化年鑑1995
    HOSHI Takehiko (Contributor栽培技術面での活用 pp.64-67)農文協 1995/01
  • 三訂 施設園芸ハンドブック
    HOSHI Takehiko (Contributor遠隔制御ネットワークシステム pp.296-300)(社)日本施設園芸協会 1994/03
  • 花の成型苗生産と利
    HOSHI Takehiko (Contributorコンピュータ制御温室 pp.74-77)誠文堂新光社 1993/10
  • 農業技術大系野菜編
    HOSHI Takehiko (Contributorエキスパートシステムの応用 12卷、pp.9-16)農文協 1993/09
  • 植物種苗工場
    星 岳彦 (Contributor第7章種苗工場におけるコンピュータ利用、pp.151-178)川島書店 1993/03
  • Plant Factories for Seedling Production
    1993
  • ハイテク農業ハンドブック
    星 岳彦 (Contributor6章成育と生産物の評価、pp.95-114)東海大学出版会 1992/08
  • High-Tech. Agricultural Handbook
    1992
  • ウルトラマン研究序説
    HOSHI Takehiko (Joint work科特隊の技術開発思想と「人工・仮想環境システム」)中経出版 1991/12 4806105600 254 142-149
  • Bio-Expert systems
    1991
  • 農業情報1990・コンピュータ農業年鑑
    星 岳彦 (Contributor植物工場への情報処理システムの応用 pp.172-174)（財）富民協会 1990/09
  • バイオエキスパートシステムズ
    星岳彦; 平藤雅之; 本條毅 (Joint work)コロナ社 1990/04 208 pp.58-104,159-167,181-185
  • 果樹･野菜栽培における予測と診断
    星岳彦; 古在豊樹 (Contributor知識工学と人工知能の応用 pp.18-23)化学工業日報社 1990/02
  • 人工知能と農業技術シリーズ第1集 人工知能と新しい農業技術
    星 岳彦 (Contributor農業への応用と展望 pp.31-52)農林統計協会 1989/07 147
  • 植物生産システム実用辞典
    星 岳彦 (Contributorコンピュータ制御･(3)人工知能の活用 pp.215-226)フジテクノシステム 1989/07
  • ネオファーム=野菜の工場生産=
    財)電力中央研究所野菜工場開発グループ(関山哲雄; 岡野利明; 星岳彦; 小酒井一嘉; 岡部勝美; 羽生広道ほか (Joint work共同執筆につき分離不可能)(社)農業電化協会 1988/03 106
  • パソコンエキスパートシステム
    星岳彦; 古在豊樹 (Contributor農業用エキスパートシステム pp.50-59)オーム社 1988/03
  • Neofarm = Vegetable Factory =
    1988
  • AI総覧
    星 岳彦 (Contributor第6章-7.農業分野への応用 第2節 農業用コンサルテーションシステム開発ツール(MICCS)の開発とその応用 pp.645-660)フジテクノシステム 1987/07
  • 養液栽培の新技術‐その現状と展望‐
    関山哲雄; 星岳彦 (Contributor養液栽培センサとコントローラ pp.132-138)養賢堂 1987/02
  • 新訂施設園芸ハンドブック
    星 岳彦 (Contributor施設園芸におけるマイコン pp.316-323)日本施設園芸協会 1986/03
  • マイクロコンピュータによる知識工学手法を用いた農業用コンサルテーションシステム
    古在豊樹; 星岳彦 (Joint work)インフォメーションサイエンス社 1985 355 
    農業分野におけるパーソナルコンピュータ用のエキスパートシステムシェルについて記載した。
  • Agricultural Consultation System
    Information Science Co. 1985

Conference Activities & Talks

  • Takehiko Hoshi
    SCEJ 54th Autumn Meeting  2023/09  The Society of Chemical Engineers, Japan
    Download
  • 星 岳彦
    農業環境工学関連学会2023年合同大会  2023/09  つくば国際会議場  農業環境工学関連学会
  • 星 岳彦
    中四国アグリテック講演会 農と食の未来を創る  2023/06  岡山国際交流センター  特定非営利活動法人中国四国農林水産・食品先進技術研究会（ NPO法人中四国アグリテック ）
    Download
  • Development of digital data logger with IoT microcontroller for UECS platform
    Takehiko Hoshi
    農業情報学会2023年度年次大会  2023/05  九州大学西新プラザ  農業情報学会
     
    ユビキタス環境制御システム(UECS)による植物生産施設の自律分散環境計測制御では，全体の計測制御記録が残らないので，環境の総合的確認・分析には施設LANに接続した記録用パソコンやクラウドサーバを使う必要がある．そこで，各UECS機器がLANで通信する内容(UECS-CCMパケット)を収集し，最新受信値を1分ごとにCSV型式で記録する低コストデジタルデータロガーのアプリケーション” UECSrecorderM5”を開発し，IoT組込コンピュータ基板(ESP-WROOM-32)を内蔵した小型低コストのプロトタイピング用コンピュータM5Stack Basic V2.6に実装した．UECSrecorderM5は，URI:< https://hoshi-lab.info/interface/UECSrecorderPackage.zip>よりソースコードを含めたZIP形式ファイルパッケージとしてダウンロード可能にした．パソコンやインターネット接続環境を必要とせずに，UECSによる施設植物生産の環境計測制御の試験研究を低コストで手軽に実施できるようになる．
    Download
  • UECSの仕組みと培養液管理への応用事例  [Invited]
    星 岳彦
    第94回日本養液栽培研究会・大阪大会  2023/05  大阪公立大学 I-siteなんば  NPO法人日本養液栽培研究会
     
    施設園芸の自律分散環境制御システムとして一定の普及が進みつつあるユビキタス環境制御システム(UECS)は、製品から自作まで，多種多様な機器を自在に組み合わせて使用することができます．UECSの模型を使用し操作を実際に体験していただくことで，仕組みを理解いただくとともに，培養液の精密管理に使用した事例「オープンソースハードウェアとUECSプラットフォームによる自作可能なイチゴ高設栽培ベッドの精密培養液管理システム（https://doi.org/10.3173/air.30.121）」のUECS記録データの閲覧をフリーウェアのUECS用解析アプリ（UECS-GEAR）を使って体験していただきます．
    Download
  • Pioneering Study on Agricultural Informatics Technologies and Social Implementation of Decentralized Autonomous Environmental Control Systems for Greenhouse Plant Production  [Invited]
    Takehiko Hoshi
    第 94 回日本農学大会(2023年度日本農学賞授与式・受賞者講演)  2023/04  東京大学農学部弥生講堂  日本農学会
     
    ince 1984, the awardee has continued to conduct pioneering research in applied information engineering for advanced greenhouse plant production based on decentralized autonomous systems, intelligent information processing (application of artificial intelligence), and data science. The groundbreaking results greatly contributed to the development of smart agriculture aimed at enhancing the productivity and competitiveness of greenhouses and plant factories. Recently, research on various low-cost bio-sensing systems for phenomics analysis, which can be manufactured in a FabLab and introduced by researchers and growers on their own, has been conducted. The awardee also proposed open information platforms that promote the advanced utilization of plant production information. The Ubiquitous Environment Control System (UECS), which can be employed to research, develop, and manufacture advanced greenhouse environmental control systems, was introduced in 2004 and has been put into practical use. The UECS is the only open information platform of a decentralized autonomous system for greenhouse plant production based on Internet of things. In addition, the awardee established organizations for research and dissemination that support high performance, commercialization, and social implementation. A low-cost UECS using general-purpose computer boards, such as the Arduino, was then developed so that greenhouse growers could build and install it themselves at their own expense. Expert growers can now implement their original algorithms for higher environmental control in their greenhouses. The research and development by the awardee proved that agricultural informatics technologies have outstanding usability in the practical greenhouse plant production field.
    Download
  • Takehiko Hoshi
    International Symposium on Agricultural Meteorology 2023 (ISAM2023)  2023/03  KDDI Ishin Hall, Yamaguchi City Industrial Exchange Base Facility  Society of Agricultural Meteorology of Japan
     
    OS-A 3/16 13:00-15:00 A会場 オーガナイザー 松田 怜（東京大学）・地子智浩（電力中央研究所） タイトル 施設園芸におけるAI・データサイエンスの利用 概要 当学会には、1980年代のエキスパートシステムや機械学習の応用に関する先駆的な研究以降、施設園芸におけるAI技術やデータの利活用について多くの研究蓄積がある。近年は、特に画像情報に関する深層学習技術の発展や関連ツール・ハードウェアの充実等を背景として、AIを温室生産の現場で活用するための取組みが各所で進められている。本OSでは、過去および現在進行中の関連の取組みに関する講演をもとに、施設園芸におけるAI・データサイエンス利用の今後のあり方について議論したい。 演者題目 OS-A-1 星 岳彦（近畿大） 施設園芸生産と知的情報処理応用の変遷・展望 OS-A-2 荊木康臣（山口大） AI画像解析の園芸作物生産での活用 OS-A-3 岩尾忠重（高知大） IoP(Internet of Plants)でのAI利用と課題について OS-A-4 藤内直道（愛媛大） 施設栽培トマトの光合成・蒸散および成育状態の計測，分析，活用
    Download
  • Takehiko Hoshi; Kenichiro Yasuba; Youichi Yoshida; Takahide Kawanishi
    農業情報学会2022年度年次大会  2022/05 
    持続的社会の実現に向け，環境影響評価指標に基づき環境負荷のより小さな施設植物生産方法を選択することが求められるようになった．ユビキタス環境制御システム(UECS)は，施設の各種機器が扱う環境計測制御情報をLANで共有可能である．この情報から，炭素と水のマスフローを算出可能であるか，イチゴ高設養液栽培施設で可能性評価した． 1株のイチゴは1日に，培養液を約81 g，CO2を約0.48 g吸収して生体が約3.2 g成長し，生体1 kgを得るのに約4,920 gのCO2が施設から排出され(カーボンフットプリント)，光合成で排出CO2の約2.9%が使われたと算出できた．また，生体1 tを得るのに約91 m3の水が必要(バーチャルウォーター)で，灌水量の約22%が吸水されたことも算出できた．中小規模施設に設置された低コストUECSで自動的に環境影響評価指標を得られることを立証できた．栽培方法や環境制御設定値を変えた翌日には環境影響評価値を得られ，改善が可能である．資源・エネルギの無駄をなくし，生産性改善のPDCAサイクルデータとして有効に活用可能になると考える．
    Download
  • Takehiko Hoshi; Ririka Nishida
    農業情報学会2022年度年次大会  2022/05 
    深層学習モデルに温室環境制御の正常状態を学習させ，そのモデルに温室環境をリアルタイム予測させることで，当該温室の環境制御が正常範囲から逸脱した状態を検出する高度監視システムを開発した．期間の異なる環境計測制御記録データセットを温室環境の深層学習モデルに学習させた予測モデルを内蔵した低コスト小型コンピュータを温室のUECSプラットホームに接続し，リアルタイムで温室環境を予測させた．最近1年間のデータセットによる学習モデルの誤差が最小になり，前作データセットと直近データの転移学習で高度監視が実現可能と考える．環境計測値の上下限値や植物成育状況の観察では検知が難しい機器の異常を発生させてリアルタイム予測したところ，平方相対誤差の60分移動平均値にすると異常状態の検出が可能であった．本高度監視システムをクラウドサーバのアプリケーションとすれば，温室の高度な遠隔監視サービスの提供にも資すると考える．
    Download
  • 星 岳彦; 掛樋 祐太; 北坂 雄大
    農業情報学会2021年度年次大会  2021/05
    Download
  • 星 岳彦; 飯塚 千尋
    農業情報学会2021年度年次大会  2021/05
    Download
  • 星 岳彦
    日本農業工学会賞202１受賞者講演会  2021/05  日本農業工学会
  • UECSの現状と展望  [Invited]
    星 岳彦
    植物工場先端技術セミナー・イチゴ培地レス栽培技術の確立を目指して  2021/02  一社 日本施設園芸協会､愛媛大学植物工場研究センター、豊橋技術科学大学エレクトロニクス先端融合研究所、豊橋技術科学大学 先端農業・バイオリサーチセンター
  • 環境計測制御を中心とした 日本の中小規模施設に優しいスマート農業の取組  [Invited]
    星 岳彦
    東京都農林総合研究センター「スマート農業の現状と今後の方向」セミナー  2020/12
  • Takehiko Hoshi
    2020 IEICE Society Conference  2020/09
    Download
  • 星 岳彦; 黒田 昌克
    農業情報学会2020年度年次大会  2020/05
    Download
  • Takehiko Hoshi
    2020 IEICE General Conference  2020/03 
    プラスチックハウス・温室・植物工場等の施設植物生産へのコンピュータ応用研究は1970年代から活発化した。しかし、導入価格・単位施設規模などの点から、日本の生産現場へ成果の普及はそれ程進展しなかった。近年、ICTのコストパフォーマンスの劇的な向上と、日本の施設面積と農業従事者の減少に対抗する持続的生産性達成への期待から、施設植物生産現場へICT導入の期待が高まっている。苛烈な放射・塵埃・結露環境に晒されるセンシングシステムのロバスト設計・保守容易化、対象生物と需給関係に固有の遅延性・非線形性・慣性・カオス的特性への対応、現場生産者へのICTリテラシーの啓蒙など、当該技術の生産現場への普及には、課題も山積している。演者らが実施している研究開発を紹介するとともに、過去から未来に向かっての技術の進展を俯瞰してみたい。
    Download
  • Takehiko Hoshi; Asuna Mastuura; Ayane Mokumi
    International Symposium on Agricultural Meteorology 2020 (ISAM2020)  2020/03
    Download
  • 施設園芸生産における スマート農業の展開  [Invited]
    星 岳彦
    東京都農林総合研究センター「スマート農業の現状と今後の方向」セミナー  2019/10
  • Development of a Low-cost UECS Nutrient Controller for Elevated Hydroponic Beds in Strawberry Production by Arduino CPU board  [Not invited]
    HOSHI Takehiko; SUZUKI Mikiya
    2019 JSABEES annual conference in Chiba  2019/09
    Download
  • 燃焼式光合成促進装置に対応した 低コストUECS によるCO2 施用システムの開発  [Not invited]
    星 岳彦; 亀岡潤一
    農業情報学会2019年度年次大会  2019/05
    Download
  • 施設園芸生産におけるスマート化の展開  [Invited]
    星 岳彦
    農業情報学会創立30周年記念シンポジウム  2019/05
    Download
  • Investigation of communication networking protocol for UECS using IM920 and its validity  [Not invited]
    Nayeen Al Amin; Takashi Okayasu; Masafumi Horimoto; Takehiko Hoshi; Eiji Inoue; Yasumaru Hirai; Muneshi Mitsuoka
    JSAI annual congress in 2018  2018/05 
    In recent years, Low Power Wide Area Network (LPWAN) has attracted attention as an application in open field and greenhouse cultivation because it has the several benefits and possibilities in order not only to construct the network for distributed fields or greenhouses but also to reduce the management cost of them. In this study, we focus on the application of LPWAN to development of practical devices based on Ubiquitous Environment Control System (UECS) proposed by Hoshi et al. (2004). As the first application, we are developing a transmission module to relay setting parameters for a node in certain UECS network to a node in the other network. The transmission module was developed by using Arduino Mega 2560, Arduino Ethernet Shield 2 and IM920 Sub-GHz wireless network module. The program was developed based on the UECS library for Arduino called “UARDECS” proposed by Low-cost UECS group (2013). The performance of developed node for transmission distance and loss (quality) was verified by the feasibility tests.
    Download
  • Discussions to introduce UECS to middle or small-scale greenhouses in Kanagawa pref.  [Not invited]
    A. Kitabatake; R. Tamura; Y. Masuda; T. Matsumura; H. Matsuda; T. Takiguchi; A. Takada; A. Koizumi; M. Kimura; A. Matsuyoshi; K. Takebayashi; T. Hoshi; Y. Takikawa
    JSAI annual congress in 2018  2018/05 
    神奈川県内施設生産者が所有する中小規模複数温室を対象にUECS 導入条件を検討した．既存の環境制御システムのUECS 化により生産者の費用負担軽減は見込めるが，広く普及を図るにはさらなる低コスト化が求められる．また，トマト生産者を対象にUECS 環境計測ノードの組立講習および圃場での試験運用を行ったところ，UECS導入には電子工作技術,ネットワーク技術の習得が必要であり,導入後の技術支援も必要である．
    Download
  • Demonstration experiment of strawberry hydroponic cultivation of DAS based multi-environmental control system by arduino low-cost UECS  [Not invited]
    T. Hoshi; Y. Takikawa; M. Sakamoto; Y. Toita; K. Kobayashi; K. Yasuba; Y. Yoshida; T. Goto; H. Kurosaki; T. Okayasu
    JSAI annual congress in 2018  2018/05 
    日本の中小規模多棟分散施設に合ったユビキタス環境制御システム(UECS)を普及するために，Arduino 低コストUECS システムの提案・開発を行った．その検証とコスト評価を実施するため，和歌山県紀の川市に設置したイチゴ高設養液栽培の試験ハウス用の自律分散型複合環境制御システムを試作・導入し，実証試験に着手した．製作コストは約20 万円であった．システムは大きな問題なく稼働した．完成品の市販を考えれば，工事費を除き，約60 万円で10～20 a までの中小規模施設に導入可能と試算された．
    Download
  • Upgrading of control logic development tool for UECS  [Not invited]
    Hideto Kurosaki; Hiroyasu Toita; Kazuharu Kobayashi; Takehiko Hoshi
    JSAI annual congress in 2018  2018/05 
    昨年開発したUECS（ユビキタス環境制御システム）用制御ロジック開発ツールの改良を行った．過去のバージョンで実装したC#類似のスクリプトは初心者には扱いにくいという意見を受け，新たに”初心者モード”の追加を行った．さらに，より実用的な機能として時間帯ごとに実行スクリプトを変更するスケジュール機能,センサの自動探索機能を付加した．
    Download
  • Developmet of Arduino compatible MPU circuit board for UECS  [Not invited]
    Hideto Kurosaki; Takehiko Hoshi; Ken-ichiro Yasuba; Hiroyasu Toita
    JSAI annual congress in 2018  2018/05 
    教育用マイコンボードとして普及しているArduino をベースとし，信頼性の向上と省電力化をはかった互換マイコンボードの開発を行った．ソフトウェア上ではArduino UNO と完全互換であり，同一の開発環境を用いてソフトウェア開発が行える．このArduino 互換機を使って3 種類のセンサノードを試作し，温室内で動作試験を行ったところ，気温35℃を超えるような高温期でも安定動作することが確認できた．
    Download
  • Development of mobile Spectrometer by Digital Fabrication Techniques and Trial to Apply Multipoint Continuous Spectroscopic Analysis of Light Environment in Greenhouse Tomato Canopy  [Not invited]
    Takehiko Hoshi; Kenta Ueda; Yoshihiro Takikawa; Takaya Azuma
    2017 CIGR World Workshop in Matsuyama  2017/09 
    A low-cost spectrometer composed MEMS sensor and open source hardware (Arduino) for plant production was designed and manufactured applying digital fabrication techniques. The estimated material cost was 30,000 JPY per set when we manufactured 5 sets. The spectrometer was enclosed zelkoba’s leaf shape case (size: 171 x 100 x 36 mm) made of polylactic acid resin by 3D printer. The control software written in the Arduino sketch programing language measured photon flux (PF, unit: nmol m-2 s-1 nm-1) from 400 to 800 nm in each 1 nm every 5 minutes. The software also calculated PPF (400 to 700 nm) and PF of B (400 to 499 nm), G (500 to 599 nm), R (600 to 699 nm) and FR (700 to 800 nm). The obtained data was saved into a micro SD memory card by CSV format. The spectrometer continuously operated for 3 days through the type B USB micro connector if one 10 Ah mobile battery use. Four sets of the manufactured spectrometer were installed inside and outside of tomato canopy in the experimental greenhouse of Wakayama prefecture, and were able to measure spectroscopic PF for 9 days continuously. The value changes of phytochrome photoequilibrium and R/FR in tomato canopy were obtained as the example of the continuous spectroscopic analysis. The effect of pruning under leaves on the light environment inside the tomato canopy was quantified by calculation of LAI. We expect that the low cost and high mobility spectrometer will be used by grower in plant production fields.
  • UECSプラットホームを用いた低コスト園芸施設環境モニタリングシステム  [Not invited]
    星 岳彦; 林 泰正; 黒崎 秀仁; 安場 健一郎; 岡安 崇史
    日本生物環境工学会2017年松山大会  2017/09
    Download
  • 埼玉実証地における炭酸ガス局所施用技術確立に向けた環境制御の検討  [Not invited]
    阿見 真; 齋藤 仁; 岡山 研; 岩元 篤; 星 岳彦; 戸板 裕康; 小林 一晴; 木村 正行
    農業情報学会2017年度年次大会  2017/05
    Download
  • 小規模複数温室を対象としたUECSによるトマト長期多段栽培における環境モニタリング・制御のおよび環境制御技術の普及推進  [Not invited]
    深山陽子; 高田敦之; 増田義彦; 田村律子; 松村知子; 松田広子; 木村正行; 松吉明彦; 竹林一彦; 星岳彦; 瀧川義浩
    農業情報学会2017年度年次大会  2017/05
    Download
  • UECS用制御ロジック開発ツールの実証試験  [Not invited]
    黒崎秀仁; 戸板 裕康; 小林 一晴; 星 岳彦
    農業情報学会2017年度年次大会  2017/05
    Download
  • 中小規模多棟分散施設の無線情報ネットワークシステムの検証  [Not invited]
    星 岳彦; 木下 晃平; 瀧川 義浩; 戸板 裕康; 小林 一晴; 安場 健一郎; 後藤 丹十郎; 黒崎 秀仁; 岡安 崇史
    農業情報学会2017年度年次大会  2017/05
    Download
  • 植物成育計測のためのUECS規格に基づく簡易グロースチャンバの開発と性能評価  [Not invited]
    最上雄介; 岡安崇史; 黒崎秀仁; 安場健一郎; 星岳彦; 井上英二; 平井泰丸; 光岡宗司
    農業情報学会2017年度年次大会  2017/05
  • Development of Spectroscopy Gadget for Plant Production by Digital Fabrication  [Not invited]
    Takehiko Hoshi
    Annual Conference of Society of Japanese Agricultural Meteorology  2017/03  青森県十和田市 北里大学十和田キャンパス  日本農業気象学会
    Download
  • 低コスト環境計測制御システムに使用する相対湿度センサの耐候性評価  [Not invited]
    星 岳彦; 南川 祐輔; 安場 健一郎; 黒崎 秀仁; 岡安 崇史
    日本生物環境工学会2016年金沢大会  2016/09
  • 920MHzセンサーネットワークシステムのUECSプロトコル変換ソフトウェアの開発  [Not invited]
    多田 裕哉; 瀧川 義浩; 星 岳彦
    日本生物環境工学会2016年金沢大会  2016/09
  • Application of UECS platform for Japanese style protected horticulture of small scale and distributed greenhouses  [Not invited]
    HOSHI T; Yasuba K; Kurosaki H; Okayasu T
    hoshi@hoshi-lab.net  2016/05 
    中小規模施設を中心とした日本の園芸施設への環境制御システムの普及を推進すべく、低コストで導入できるUECSを開発した。汎用の低コストCPU基板Arduinoを採用し、専用の園芸施設用計測入力Shieldと、園芸施設用計測出力Shieldの2種を試作した。UECS用ライブラリUARDECSを用いて環境計測ノードと2層カーテン制御ノードのプログラムを開発し、アンスリウム栽培ハウスに設置した結果、正しく動作することを確認した。
  • 920MHz帯を使用したセンサーネットワークによる閉鎖型照明付培養棚の 環境分布測定  [Not invited]
    TADA Yuuya; TAKIKAWA Yoshihiro; HOSHI Takehiko
    日本農業気象学会近畿支部2015年度大会  2015/12
  • ユビキタス環境制御システム製品同定コード(UECS-ID)管理システムの構築  [Not invited]
    HOSHI, Takehiko; Manami HASEGAWA; Ken-ichiro YASUBA
    日本生物環境工学会2015年宮崎大会  2015/09
  • 分散型温室環境計測機器のための低コスト湿度センサの耐候性評価  [Not invited]
    星; 岳; 越智眞之; 安場健一; 崎秀; 安
    農業情報学会2015年度年次大会シンポジウム・オーガナイズドセッション・個別口頭発表講演要旨集90-91  2015/05
  • 圃場環境情報の高密度計測ためWiFi 内蔵ワンボードマイコンの利用  [Not invited]
    岡安崇史; 堀本正文; アンドリ プリマ ヌグロホ; 有田大作; 星岳彦; 安場健一郎; 黒崎秀仁; 井上英二; 平井康丸; 光岡宗司
    農業情報学会2015年度年次大会シンポジウム・オーガナイズドセッション・個別口頭発表講演要旨集88-89  2015/05
  • HOSHI TAKEHIKO
    公開シンポジウム「変動環境下における食糧生産と生物環境工学」、日本生物環境工学会2014年東京大会  2014/09
  • HOSHI TAKEHIKO; NOMURA TAKASHI; OGURA TERUYA; TAKIGAWA YOSHIHIRO
    日本生物環境工学会大会講演要旨  2014/09
  • 施設園芸･植物工場のスマート化  [Invited]
    星 岳彦
    農業情報学会創立25周年記念シンポジウム「スマート農業とシステムイノベーションに向けて」  2014/05
  • Arduino用簡易環境計測シールドの開発とその妥当性の検討  [Not invited]
    岡安崇史; アンドリ・プリマ・ヌグロホ; 有田大作; 星岳彦; 安場健一郎; 黒崎秀仁; 井上英二; 平井康丸; 光岡宗司
    農業情報学会2014年度年次大会シンポジウム・個別口頭発表講演要旨集25-26  2014/05
  • 植物生産施設に向いた低コスト湿度センサ選択の基礎的検討  [Not invited]
    星岳彦; 松山智紀; 安場健一郎; 岡安崇史; 黒崎秀仁
    農業情報学会2014年度年次大会シンポジウム・個別口頭発表講演要旨集46-47  2014/05
  • オープンソースハードウェア用のUECSミドルウェアの開発  [Not invited]
    安場健一郎; 星岳彦; 岡安崇史; 黒崎秀仁; 田中義行; 後藤丹十郎; 吉田裕一
    農業情報学会2014年度年次大会シンポジウム・個別口頭発表講演要旨集44-45  2014/05
  • Present situation and prospects of UECS information platform in Japan  [Not invited]
    HOSHI Takehiko
    APHPF 2014 the 5th China-Korea-Japan Joint symposium of Protected Horticulture and Plant Factory  2014/05
  • Effectiveness evaluation on utilization of two snss in japan agriculture  [Not invited]
    Takashi Okayasu; Daisaku Arita; Andri Prima Nugroho; Takehiko Hoshi; Takashi Yoshinaga; Eiji Inoue; Yasumaru Hirai; Muneshi Mitsuoka
    International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB)  2014/05
  • Development of a Nondestructive Measurement System to Obtain Exuberance Index of Foliage during Greenhouse Crop Growth by Low-cost Near-Infrared Light Sensors  [Invited]
    T. Hoshi; K. Suzuki; J. Imahara; K. Yasuba; T. Nanseki
    ISHS GreenSys2013  2013/10
  • 施設植物生産のスマート化に向けたICT活用の可能性  [Invited]
    HOSHI Takehiko
    電気四学会関西支部講演会要旨、電子情報通信学会関西支部  2013/09
  • HOSHI TAKEHIKO; YASUBA KEN'ICHIRO; KUROSAKI SHUJI; OKAYASU TAKASHI
    日本生物環境工学会2013年度香川大会講演要旨、p.74-75  2013/09
  • 施設園芸の環境計測制御情報化とスマートアグリコンソーシアムの活動  [Invited]
    HOSHI Takehiko
    農業情報学会2013年度シンポジウム・オーガナイズドセッション・個別口頭発表講演要旨集(シンポジウム招待講演)、pp.69-70  2013/05
  • Establishments of Open Communication Platform and Business Consortium on the UECS Technology for Advanced Greenhouse Horticultural Production  [Invited]
    T. Hoshi; K. Watanabe; K. Yasuba; Y. Shinohara
    The 4th Korea-China-Japan Joint Symposium on Protected Horticulture and Plant Factory  2012/11
  • UECSに対応したAndroid用撮影・つぶやきアプリの開発  [Not invited]
    大畑 亮輔; 星 岳彦; 渡邊 勝吉; 上田 正二郎; 安場健一郎; 南石 晃明; 林 真紀夫
    日本生物環境工学会2012年東京大会50周年記念大会講演要旨、p.28-29  2012/09
  • UECS標準通信方式による作業情報統合化の提案  [Not invited]
    HOSHI Takehiko; UEDA Shoujiro; WATANABE Katsuyoshi; NANSEKI teruaki
    日本生物環境工学会2012年東京大会50周年記念大会講演要旨、p.26-27  2012/09
  • 施設植物生産のグランド・デザインと情報利用  [Invited]
    HOSHI Takehiko
    農業情報学会2012年度シンポジウム・オーガナイズドセッション・個別口頭発表講演要旨集、p.69-70  2012/05
  • UECS に対応した撮影・つぶやきアプリ用通信規格の策定  [Not invited]
    星 岳彦; 大畑 亮輔; 渡邊 勝吉; 上田 正二郎; 安場 健一郎; 南石 晃明; 林 真紀夫
    業情報学会2012年度シンポジウム・オーガナイズドセッション・個別口頭発表講演要旨集、p.155-156  2012/05
  • UECS に対応したAndroid 版ポケット環境モニタの開発  [Not invited]
    大畑亮輔; 星岳彦; 南石晃明; 林真紀夫
    農業情報学会2012年度シンポジウム・オーガナイズドセッション・個別口頭発表講演要旨集、p.51-52  2012/05
  • HOSHI TAKEHIKO
    日本農業気象学会全国大会講演要旨  2012/03
  • 標準規格で記録された植物生産環境の着眼点提示ソフトウェアの開発  [Not invited]
    大畑 亮輔; 山梨 竜一; 星 岳彦
    富士山麓アカデミック&サイエンスフェア2011予稿集  2011/12
  • 施設植物生産におけるユビキタスセンシングとコントロール  [Invited]
    HOSHI Takehiko
    電子情報通信学会ユビキタス・センサネットワーク研究会・ユビキタス・センサネットワークの実用化を目指した超分野シンポジウム資料 pp.16-24  2011/10
  • OHATA RYOSUKE; YAMANASHI RYUICHI; HOSHI TAKEHIKO
    日本生物環境工学会大会講演要旨  2011/09
  • HOSHI TAKEHIKO; KATO SHOTA; IMAHARA JUNGO; NANSEKI TERUAKI
    日本生物環境工学会大会講演要旨  2011/09
  • 施設植物生産の情報化を推進するプラットホームの確立「農業クラウドコンピューティングと農業現場の情報デザイン」  [Invited]
    HOSHI Takehiko
    農業情報学会2011年度シンポジウム・オーガナイズドセッション・個別発表講演要旨集  2011/05
  • ワンストップ高度施設園芸生産支援情報システムの開発  [Not invited]
    星岳彦; 大畑亮輔; 渡邊勝吉; 大須賀隆司; 南石晃明
    農業情報学会2011年度シンポジウム・オーガナイズドセッション・個別発表講演要旨集 45-46  2011/05
  • HOSHI TAKEHIKO; TSUCHIYA JIN; HAYASHI YASUMASA; NIIBORI KENJI; HIROSE ICHIRO; HAMAMOTO HIROSHI; SUZUKI KATSUMI
    日本農業気象学会全国大会講演要旨  2011/03
  • HOSHI TAKEHIKO
    日本農業気象学会全国大会講演要旨  2011
  • Standardization of Information Exchange Platform for Achieving High-performance Protected Horticulture  [Invited]
    HOSHI Takehiko
    The 2nd Sino-Japan-Korea Symposium on Protected Horticulture and Environmental Control, Asian Working Group for Protected Horticulture and Environmental Control Congress (APHEC)  2010/10
  • HOSHI TAKEHIKO; SHIBATA TAKAYASU; FUKAZAWA KAZUMASA; FUKAZAWA TOSHIO; TAKATSUJI MASAMOTO
    日本生物環境工学会大会講演要旨  2010/09
  • HOSHI TAKEHIKO; HAYASHI YASUMASA
    日本農業気象学会全国大会講演要旨  2010
  • TAKAHASHI TAKUYA; SUZUKI KATSUMI; YASUBA KEN'ICHIRO; TAKAICHI MASUYUKI; HOSHI TAKEHIKO
    園芸学研究 別冊  2009/09
  • HAYASHI YASUMASA; TAKAICHI MASUYUKI; KURAMOTO HIROYUKI; KURAMOTO TSUYOSHI; HOSHI TAKEHIKO
    日本生物環境工学会大会講演要旨  2009/09
  • HAMAMOTO HIROSHI; HOSHI TAKEHIKO; OJIMA KAZUSHI; YAMAZAKI KEISUKE
    日本生物環境工学会大会講演要旨  2009/09
  • HOSHI TAKEHIKO; HAYASHI YASUMASA
    電子情報通信学会大会講演論文集  2009/03
  • Hoshi Takehiko; Hayashi Yasumasa
    Proceedings of the IEICE General Conference  2009/03
  • HOSHI TAKEHIKO; TOOYAMA HOMARE; NAKI YOICHI; HIGA HIROYUKI; GOTO KAKUSHI; NIIBORI KENJI
    日本農業気象学会全国大会講演要旨  2009
  • HOSHI TAKEHIKO; AIZAWA YOSHIAKI; SAITO YUKIHIRO
    農業環境工学関連学会合同大会講演要旨集(CD-ROM)  2009
  • HOSHI TAKEHIKO; SHINTANI KEIJI; HAYASHI YASUMASA
    日本生物環境工学会大会講演要旨  2008/09
  • A communication protocol for collaboration among the measurement and control nodes in a decentralized autonomous environment control system of greenhouses  [Not invited]
    T.Hoshi; Y. Hayashi; K. Shintani
    AALD AFITA WCCA 2008 World Conference on Agricultural Information and IT  2008/08
  • HOSHI TAKEHIKO; SHINMA KEITA; KAWAMURA FUTOSHI; GOTO KAKUSHI; SHIMBORI KENJI
    日本農業気象学会全国大会講演要旨  2008/03
  • HOSHI TAKEHIKO
    日本農業気象学会全国大会講演要旨  2008/03
  • HOSHI TAKEHIKO; ARAMA KEITA
    日本生物環境工学会大会講演要旨  2007/06
  • ARAMA KEITA; KASAHARA AKIHIRO; HOSHI TAKEHIKO
    農業環境工学関連学会合同大会講演要旨集(CD-ROM)  2007
  • YASUBA KEN'ICHIRO; KUROSAKI HIDETO; HAYASHI YASUMASA; TAKAICHI MASUYUKI; KAWASHIMA HIROKI; SASAKI HIDEKAZU; KAWASAKI YASUSHI; OMORI HIROMI; NAKANO AKIMASA; NAKANO YUKA; SUZUKI KATSUMI; SAKAUE OSAMU; HOSHI TAKEHIKO
    園芸学会東海支部研究発表要旨及びシンポジウム資料  2007
  • HAYASHI YASUMASA; HOSHI TAKEHIKO
    農業環境工学関連学会合同大会講演要旨集(CD-ROM)  2007
  • KUROSAKI SHUJI; YASUBA KEN'ICHIRO; TAKAICHI MASUYUKI; HAYASHI YASUMASA; HOSHI TAKEHIKO; SUZUKI KATSUMI; KAWASAKI YASUSHI; OMORI HIROMI; SASAKI HIDEKAZU; NAKANO YUKA; NAKANO AKIMASA; KAWASHIMA HIROKI; SAKAGAMI OSAMU
    農業環境工学関連学会合同大会講演要旨集(CD-ROM)  2007
  • SHINTANI KEIJI; HOSHI TAKEHIKO; TSUCHIYA KAZU
    農業環境工学関連学会合同大会講演要旨集(CD-ROM)  2007
  • YASUBA KEN'ICHIRO; KUROSAKI HIDEHITO; HAYASHI YASUMASA; TAKAICHI MASUYUKI; SASAKI HIDEKAZU; HOSHI TAKEHIKO
    園芸学会雑誌 別冊  2006/09
  • ARAMA KEITA; SHIOZAWA EICHI; HOSHI TAKEHIKO
    農業環境工学関連学会合同大会講演要旨集(CD-ROM)  2006
  • HOSHI TAKEHIKO
    日本農業工学会シンポジウム  2006
  • HAYASHI YASUMASA; TAKAICHI MASUYUKI; YAMAGUCHI HIROAKI; AIHARA YUSUKE; HOSHI TAKEHIKO
    農業環境工学関連学会合同大会講演要旨集(CD-ROM)  2006
  • SHINTANI KEIJI; SATO YOSHINORI; EBINUMA KEN; HOSHI TAKEHIKO
    農業環境工学関連学会合同大会講演要旨集(CD-ROM)  2006
  • HOSHI TAKEHIKO
    農業環境工学関連学会合同大会講演要旨集(CD-ROM)  2006
  • KUROSAKI SHUJI; HAYASHI YASUMASA; HOSHI TAKEHIKO; TAKAICHI MASUYUKI; OMORI HIROMI
    農業環境工学関連学会合同大会講演要旨集(CD-ROM)  2006
  • UCHINO HIROMI; HOSHI TAKEHIKO
    農業環境工学関連7学会合同大会講演要旨集  2005/09
  • HAYASHI YASUMASA; UCHINO HIROMI; TAKAICHI MASUYUKI; AIHARA YUSUKE; YAMAGUCHI HIROAKI; HOSHI TAKEHIKO
    農業環境工学関連7学会合同大会講演要旨集  2005/09
  • HOSHI TAKEHIKO; UCHINO HIROMI; FURUYA YOSUKE
    農業環境工学関連7学会合同大会講演要旨集  2005/09
  • SHIOZAWA EICHI; HOSHI TAKEHIKO
    農業環境工学関連7学会合同大会講演要旨集  2005/09
  • Development of a Decentralized, Autonomous Greenhouse Environment Control System i na Ubiquitous Computing and Internet Environment  [Not invited]
    T.Hoshi; Y. Hayashi; H. Uchino
    Joint Conference of the 4th Internetional Conference of the Asian Federation of Information Technology in Agriculture and the 2nd World Congress of Computer in Agriculture and Natural Resources, AFITA/WCCA  2004/08
  • A Decentralized Control and Data Processing System Using Internet Technology for Greenhouse Environment Management  [Invited]
    T.Hoshi; Y. Hayashi; E. Shiozawa; H. Uchino; T. Suzuki
    Internetional workshop on Environmental Control and Structural Design for Protected Cultivation  2004/04
  • HOSHI TAKAHIKO; SHIOZAWA EIJI
    日本農業気象学会全国大会日本生物環境調節学会大会合同大会講演要旨  2004
  • UCHINO HIROMI; HAYASHI YASUMASA; ISHII MASAHISA; HOSHI TAKAHIKO
    日本農業気象学会全国大会日本生物環境調節学会大会合同大会講演要旨  2004
  • HOSHI TAKEHIKO
    日本農業気象学会全国大会日本生物環境調節学会大会合同大会講演要旨  2004
  • SHIOZAWA EICHI; HOSHI TAKEHIKO
    日本農業気象学会全国大会日本生物環境調節学会大会合同大会講演要旨  2004
  • HOSHI TAKEHIKO; SUZUKI TAKAFUMI
    日本農業気象学会全国大会日本生物環境調節学会大会合同大会講演要旨  2003/09
  • HOSHI TAKEHIKO; HAYASHI YASUMASA
    日本農業気象学会全国大会日本生物環境調節学会大会合同大会講演要旨  2003/09
  • IMAMURA YUICHI; MIURA TOMOYOSHI; HOSHI TAKEHIKO
    日本農業気象学会全国大会日本生物環境調節学会大会合同大会講演要旨  2003/09
  • SUZUKI TAKAFUMI; HASEGAWA JUN'ICHI; HOSHI TAKEHIKO; WATANABE TSUTOMU
    日本農業気象学会全国大会日本生物環境調節学会大会合同大会講演要旨  2003/09
  • IMAMURA YUICHI; WADA SHUICHI; YAMAGAMI AKIYO; HOSHI TAKEHIKO
    日本農業気象学会全国大会日本生物環境調節学会大会合同大会講演要旨  2003/09
  • SUZUKI TAKAFUMI; HOSHI TAKEHIKO
    日本農業気象学会全国大会日本生物環境調節学会大会合同大会講演要旨  2002/08
  • HOSHI TAKEHIKO
    日本農業気象学会全国大会日本生物環境調節学会大会合同大会講演要旨  2002/08
  • IMAMURA YUICHI; YANAGISAWA TAISUKE; HOSHI TAKEHIKO
    日本農業気象学会全国大会日本生物環境調節学会大会合同大会講演要旨  2002/08
  • KONDO MAYU; HOSHI TAKEHIKO
    日本農業気象学会全国大会日本生物環境調節学会大会合同大会講演要旨  2002/08
  • Growth promotion of tea trees by putting bamboo charcoal in soil  [Not invited]
    T. Hoshi
    2001 International Conference on O-cha(tea) Culture and Science  2001/10
  • HAYASHI YASUMASA; HOSHI TAKEHIKO; KUBOTA CHIERI; ZEN CHOKO; KOZAI TOYOKI
    日本農業気象学会全国大会日本生物環境調節学会大会合同大会講演要旨  2001/06
  • YOKOI SHINGO; HASEGAWA TOMOYUKI; HAYASHI YASUMASA; HOSHI TAKEHIKO; TAGUCHI KATSUNORI; KUBOTA CHIERI; ZEN CHOKO; KOZAI TOYOKI
    日本農業気象学会全国大会日本生物環境調節学会大会合同大会講演要旨  2001/06
  • HOSHI TAKEHIKO; HAYASHI YASUMASA; KOZAI TOYOKI
    日本農業気象学会全国大会日本生物環境調節学会大会合同大会講演要旨  2001/06
  • HASEGAWA TOMOYUKI; YOKOI SHINGO; SAKAMI KOSUKE; HAYASHI YASUMASA; HOSHI TAKEHIKO; KUBOTA CHIERI; ZEN CHOKO; KOZAI TOYOKI
    日本農業気象学会全国大会日本生物環境調節学会大会合同大会講演要旨  2001/06
  • HOSHI TAKEHIKO; UMEDA ATSUSHI; FUSE JUN'YA; KASEDA NAGAO
    日本植物工場学会大会学術講演要旨集  2000/07
  • SHINODA ISAO; HOSHI TAKEHIKO; UCHIDA TSUYOSHI
    日本植物工場学会大会学術講演要旨集  2000/07
  • HOSHI TAKEHIKO
    日本農業工学会シンポジウム  2000/05
  • Support Systems for Large-Scale Transplant Production - An Autonomic Decentralized Production Control System and a Production Planning System -  [Invited]
    T.Hoshi; Y.Hayashi; T.Kozai
    Internetional Sympodium on Transplant Prodution in Closed System for Solving the Gloval Issues on Environmental Conservation, Food, Resources and Energy, Japan Society for Promotion of Science (JSPS)  2000/03
  • Searching Major Factors Having Influence on Cut-rose Production Using Past Averaging Data and Predicting Harvest Using topological Case-based Modeling  [Not invited]
    T.Hoshi; A. Umeda; J. Fuse; C. Kaseda
    The XIV Memorial CIGR world congress 2000, CIGR (Internetional Commission of Agricultural Engineering)  2000/01
  • Support Systems for Large-scale Transplant Production  [Not invited]
    T.Hoshi; Y.Hayashi
    Proceedings of the Korea-Japan Joint Sympodium on Transplant Production in Horticultural Plants  1999/11
  • HAYASHI YASUMASA; HOSHI TAKEHIKO; KOZAI TOYOKI
    日本農業気象学会全国大会日本生物環境調節学会大会合同大会講演要旨  1999/07
  • HOSHI TAKEHIKO
    日本農業気象学会全国大会日本生物環境調節学会大会合同大会講演要旨  1999/07
  • SHINODA ISAO; HOSHI TAKEHIKO
    日本農業気象学会全国大会日本生物環境調節学会大会合同大会講演要旨  1999/07
  • KAGAMI YUKI; EMOTO TAKASHI; HOSHI TAKEHIKO; AKAGI SHIZUKA; TAKATSUJI MASAKI
    日本植物工場学会大会学術講演要旨集  1998/10
  • HOSHI TAKEHIKO; FUSE JUN'YA; SUGIYAMA TAKUYA; SHINODA ISAO
    日本植物工場学会大会学術講演要旨集  1998/10
  • SHINODA ISAO; HOSHI TAKEHIKO; OKADA KAZUYA; FUSE JUN'YA
    日本植物工場学会大会学術講演要旨集  1998/10
  • HOSHI TAKEHIKO; FUSE JUN'YA; SHINODA ISAO
    日本農業気象学会全国大会日本生物環境調節学会大会合同大会講演要旨  1998/07
  • Yield forecast of cherry tomatoes by a topological case based modeling system  [Not invited]
    Takehiko Hoshi; Taro Sasaki; Hiroaki TsuTsui; Tsutomu Watanabe; Fujio Tagawa
    Proceeding from the 3rd IFAC/CIGR Workshop  1998/04
  • 位相事例ベースモデリングによるミニトマトの収量予測  [Not invited]
    星 岳彦; 佐々木 太郎; 筒井 宏明; 渡邊 勉; 田川 不二夫
    日本農業気象学会1997年度全国大会・日本生物環境調節学会第35回集会・日本植物工場学会平成9年度大会講演要旨  1997/06
  • 自走式ロボットによる植物生産施設内環境分布測定システム  [Not invited]
    HOSHI Takehiko
    日本農業気象学会1997年度全国大会・日本生物環境調節学会第35回集会・日本植物工場学会平成9年度大会講演要旨  1997/06
  • HONJO Tsuyoshi; HOSHI Takehiko; TAKEUCHI Shinya; FUSE Junya
    Landscape Research Japan Online  1997/03 
    In the present study, prototype of environmental information system using Internet or Internet protocol was developped. The distribution of the data using the protocols or software of Internet is preferable instead of conventional communication software or fax, considering the widespread availability of Internet. The diagram of the system is shown in Fig. 1. One of the functions of the system was data transfer by mail. Software for data transfer from data acquisition computer to WWW system by E-mail was developped using PPP and SMTP. By this method, data acquisition was made possible in the area where LAN is not constructed. Another function was data distribution by WWW and 3D visualization on WWW. WWW server was made and terrain rendering software with CGI scripts were developped for the 3D visualization. Landsat data or meteorological data like temperature, relative humidity are overlaid with digital elevation model and 3D images were shown on the home pages.
  • HOSHI TAKEHIKO
    日本植物工場学会大会学術講演要旨集  1996/08
  • FUSE JUN'YA; HOSHI TAKEHIKO
    日本植物工場学会大会学術講演要旨集  1996/08
  • HOSHI TAKEHIKO; ISHII MASAHIKO; YAMADA KAZUHARU; MIMURA SATOSHI
    日本農業気象学会全国大会日本生物環境調節学会大会合同大会講演要旨  1996/07
  • HONJO TAKESHI; HOSHI TAKEHIKO; TAKEUCHI SHIN'YA; FUSE JUN'YA
    日本農業気象学会全国大会日本生物環境調節学会大会合同大会講演要旨  1996/07
  • HOSHI TAKEHIKO
    システム農学会シンポジウム要旨集  1996/05
  • 三村聡; 星岳彦; 高辻正基
    日本植物工場学会平成7年度大会学術講演要旨集 日本植物工場学会  1995/08
  • 布施順也; 星岳彦
    日本植物工場学会平成7年度大会学術講演要旨集 日本植物工場学会  1995/08
  • HOSHI TAKEHIKO; HAYASHI YASUMASA; FUJIMA TAKAO; SASAKI TARO
    日本植物工場学会大会学術講演要旨集  1995/08
  • HOSHI TAKEHIKO; FUSE JUN'YA
    日本農業気象学会全国大会日本生物環境調節学会大会合同大会講演要旨  1995/07
  • An object-oriented plant growth modeling support System based upon cumulation of environments  [Not invited]
    Takehiko Hoshi; Jyunya Fuse
    2nd IFAC/IFAP/EurAgEng Workshop on Artificial Intelligence In Agricuture  1995/05
  • T. Hoshi, J. Fuse An object-oriented plant growth modeling support System based upon cumulation of environments  [Not invited]
    2nd IFAC / IFAP /EurAgEng Workshop on Artificial Intelligence Agicuture International Federation of Automatic Control  1995
  • 植物の運動解析に基づく生体情報計測(第一報)三次元画像計測によるホウレンソウの運動解析  [Not invited]
    園芸学会雑誌 国芸学会  1994
  • 星岳彦; 高辻正基
    日本植物工場学会大会学術講演要旨集  1994
  • 栽培CADシステムの構築  [Not invited]
    星 岳彦
    '94施設園芸新技術シンポジウム (社)日本施設園芸協会・日本農業気象学会・(社)日本能率協会  1994
  • SQLを用いた環境制御システム操作プロトコルの標準化  [Not invited]
    星 岳彦
    日本植物工場学会平成6年度大会学術講演要旨集 日本植物工場学会  1994
  • 植物生産環境制御システムプロトコルの標準化  [Not invited]
    星 岳彦
    日本農業気象学会1994年度・日本生物環境調節学会第32回集会合同大会講演要旨 日本農業気象学会・日本生物環境調節学会  1994
  • 星岳彦; 瀧口武; 高辻正基
    日本植物工場学会大会学術講演要旨集  1993/08
  • 星岳彦; 瀧口武; 高辻正基
    日本農業気象学会全国大会日本生物環境調節学会大会合同大会講演要旨  1993/04
  • マルチメディアエキスパートシステムによる芝生の病害診断システムの開発  [Not invited]
    星 岳彦; 貫 和之; 阿部 勉
    日本植物工場学会平成４年度大会学術講演会  1992/08
  • Expert System for Maintenance and Environmental Control of Plant Growth Factories  [Invited]
    Takehiko Hoshi
    IFAC Workshop on Expert Systems in Agriculture  1992/08
  • 植物工場遠隔管理システム用の低コストカラー画像通信方式の検討  [Not invited]
    星 岳彦; 吉田 智一; 田上 隆一
    日本植物工場学会（平成３年度大会）学術講演会  1991/08
  • An object-oriented environmental control model in protected cultivation  [Not invited]
    Takehiko Hoshi
    MATHEMAICAL AND CONTROL APPLICATION IN AGRICULTURE AND HORTICULTURE （ED．BY Y.HASHIMOTO AND W.DAY）, proceedings of IFAC workshop  1991/08
  • 星岳彦
    日本農業気象学会全国大会日本生物環境調節学会大会合同大会講演要旨  1990/08
  • 星岳彦; 吉田智一; 田上隆一
    日本農業気象学会全国大会日本生物環境調節学会大会合同大会講演要旨  1990/08
  • 植物工場におけるコンピュータ利用  [Invited]
    HOSHI Takehiko
    日本植物工場学会平成２年度大会シンポジウムおよび学術発表会  1990/07
  • 自然光利用野菜工場の開発 7.ポリダクトを用いた温室の冷・暖房熱交換システム  [Not invited]
    岡野利明; 小酒井一嘉; 星岳彦; 寺添斉
    平成元年度日本農業気象学会全国大会  1990/07
  • 自然光利用野菜工場の開発 8.養液栽培におけるホウレンソウの生育に及ぼす亜鉛の影響  [Not invited]
    寺添斉; 岡野利明; 星岳彦; 小酒井一嘉; 小川正
    平成元年度日本農業気象学会全国大会  1990/07
  • 自然光利用野菜工場の開発 9.野菜移動方式作業機械  [Not invited]
    星岳彦; 岡野利明; 寺添斉; 小酒井一嘉
    平成元年度日本農業気象学会全国大会  1990/07
  • マルチメディアによる植物情報ライブラリの開発（１）ＣＤ－Iを使った花と緑のライブラリ  [Not invited]
    安藤 敏夫; 星 岳彦; 上田 善弘
    園芸学会平成2年度春季大会  1990/04
  • マルチメディアによる植物情報ライブラリの開発（２）イメージによって植物の検索を行うアルゴリズム  [Not invited]
    星 岳彦; 安藤 敏夫; 上田 善弘
    園芸学会平成2年度春季大会  1990/04
  • Disease and pest diagnosis for tomato  [Not invited]
    Hoshi,T; Kozai,T
    2nd International DLG-congress for Computer Technology -Knowledge based systems in agriculture-papers  1988/06
  • 自然光利用野菜工場の開発 4. 外部遮光を行った場合の冬期の温室内冷房負荷  [Not invited]
    岡野利明; 星岳彦; 寺添斉; 小酒井一嘉; 小川正
    昭和63年度日本農業気象学会全国大会  1988/04
  • 自然光利用野菜工場の開発 5.養液栽培システムと培養液の調節  [Not invited]
    寺添斉; 岡野利明; 星岳彦; 小酒井一嘉; 小川正
    昭和63年度日本農業気象学会全国大会  1988/04
  • 自然光利用野菜工場の開発 6培養液に光が入射する場合の作物生育  [Not invited]
    星岳彦; 岡野利明; 寺添斉; 関山哲雄; 山本雄二郎
    昭和63年度日本農業気象学会全国大会  1988/04
  • 農業情報システムの現状と展望  [Invited]
    HOSHI Takehiko
    特別セミナー｢バイオテクノロジーとコンピュータ利用による次世代植物生産システムの実現｣、‘88国際シンポジューム｢施設園芸における先端技術｣組織委員会･日本生物環境調節学会  1987/12
  • 自然光利用野菜工場の開発 1.冷暖房システムと負荷特性  [Not invited]
    岡野利明; 星岳彦; 関山哲雄; 上原毅
    昭和62年度日本農業気象学会全国大会  1987/04
  • 自然光利用野菜工場の開発 2.スペーシング栽培方法とサラダナの生育  [Not invited]
    岡野利明; 星岳彦; 小酒井一嘉; 岡部勝美; 羽生広道; 関山哲雄
    昭和62年度日本農業気象学会全国大会  1987/04
  • 自然光利用野菜工場の開発 3.環境調節システムと通信ネットワーク  [Not invited]
    星岳彦; 岡野利明; 関山哲雄
    昭和62年度日本農業気象学会全国大会  1987/04
  • 知識工学手法による施設栽培支援システムの開発(1)野菜工場の運転支援システム  [Not invited]
    星岳彦; 岡野利明
    昭和62年度日本農業気象学会全国大会  1987/04
  • 環境情報システムの展望  [Invited]
    HOSHI Takehiko
    第2回農業生産と環境シンポジウム、農業環境学会連合  1986/10
  • 画像処理による複数葉の同時計測システムの開発  [Not invited]
    HOSHI Takehiko
    昭和61度日本農業気象学会関東支部会  1986/10
  • 自然光利用型野菜工場における環境調節  [Invited]
    HOSHI Takehiko
    昭和61年度日本農業気象学会北海道支部大会シンポジューム  1986/09
  • 高能率野菜生産技術の開発-自然光併用型施設におけるサラダナの生育-  [Not invited]
    星岳彦; 岡部勝美; 関山哲雄
    昭和61年度日本農業気象学会全国大会  1986/05
  • モデル温室による暖･冷房負荷の測定  [Not invited]
    岡野利明; 星岳彦; 関山哲雄
    昭和61年度日本農業気象学会全国大会  1986/05
  • 知識工学手法を用いた農業用コンサルテーションシステム-イチゴおよびナシの病害診断への応用-  [Not invited]
    古在豊樹; 茂呂紀江; 森田久美; 星岳彦
    昭和61年度日本農業気象学会全国大会  1986/05
  • 高能率野菜生産技術の開発(第1報)夜間補光がホウレンソウの生育および品質に及ぼす影響  [Not invited]
    星岳彦; 岡部勝美; 関山哲雄
    昭和60年度園芸学会春季大会  1985/04
  • 商業温室における環境制御用コンピュータの稼動実態(1)データ収集システム  [Not invited]
    星岳彦; 三原恵; 古在豊樹; 河住春樹
    昭和59年度日本農業気象学会全国大会  1984/05
  • マイクロコンピュータを用いた園芸用コンサルテーションシステムの開発  [Not invited]
    星岳彦; 古在豊樹
    昭和59年度日本農業気象学会全国大会  1984/05
  • 知識工学的手法を用いたマイクロコンピュータによるトマト病害診断システムの試作  [Not invited]
    星岳彦; 古在豊樹
    昭和59年園芸学会秋季大会  1984/05
  • 園芸作物栽培用知的支援システムの開発(第2報)サブプロセッサ支援ソフトウェアの開発  [Not invited]
    星岳彦; 古在豊樹; 渡部一郎
    昭和58年度農業気象学会全国大会  1983/04
  • 園芸作物栽培用知的支援システムの開発(第1報)サブプロセッサの開発  [Not invited]
    星岳彦; 古在豊樹; 渡部一郎
    昭和57年度農業気象学会関東支部会  1983/01
  • 葉形･葉面積情報計測処理システムの開発(1)単葉の葉面積、葉幅および葉長の画像計測処理  [Not invited]
    古在豊樹; 熊谷美佳子; 星岳彦; 渡部一郎
    昭和57年度日本農業気象学会全国大会  1982/05
  • オンライン交雑記録･品種特性検索用データベースシステム(ORCHIDS)の開発(第1報)構造と機能  [Not invited]
    星岳彦; 渋谷紀子; 安藤敏夫; 古在豊樹
    昭和57年度園芸学会春季大会  1982/04
  • オンライン交雑記録･品種特性検索用データべ－スシステム(ORCHIDS)の開発(第2報)使用の手順とコマンド  [Not invited]
    渋谷紀子; 星岳彦; 安藤敏夫; 古在豊樹
    昭和57年度園芸学会春季大会  1982/04

Works

  • 施設園芸生産のためのユビキタス環境制御システムの開発
    2004 -2005
  • データベース・モデル協調システムの開発
    2001 -2005
  • Development of database and model cooperation systems
    2001
  • Study on closed type transplant factory for practical use
    1999

MISC

Industrial Property Rights

Awards & Honors

  • 2023/04 Association of Japanese Ageicultural Scientific Societies Japan Prize of Agricultural Science
     Pioneering Study on Agricultural Informatics Technologies and Social Implementation of Decentralized Autonomous Environmental Control Systems for Greenhouse Plant Production 
    受賞者: Takehiko Hoshi
  • 2023/03 読売新聞社 読売農学賞
     施設植物生産の先駆的農業情報工学研究と自律分散環境制御技術の普及 
    受賞者: 星 岳彦
  • 2021/05 株式会社新農林社 新農林社賞
     施設環境計測制御の情報基盤の開発と普及 
    受賞者: 星 岳彦
  • 2021/05 JAPAN ASSOCIATION OF INTERNATIONAL COMMISSION OF AGRICULTURAL AND BIOSYSTEMS ENGINEERING PRIZE of JAPAN ASSOCIATION OF INTERNATIONAL COMMISSION OF AGRICULTURAL AND BIOSYSTEMS ENGINEERING
     Development and dissemination of information platforms for greenhouse environmental measurement and control 
    受賞者: Takehiko Hoshi
  • 2015/09 日本生物環境工学会 功績賞
     植物工場の学術的普及 japan_society 
    受賞者: 星 岳彦
  • 2014/05 農業情報学会 功績賞
     
    受賞者: 星 岳彦
  • 2011/03 日本農業気象学会 普及賞
     温室用ユビキタス環境制御システムの開発・普及 
    受賞者: 星 岳彦
  • 2010/05 農業情報学会 学術賞
     施設園芸生産へのICT導入基盤としての情報と通信の標準規格化に関する研究 
    受賞者: 星 岳彦
  • 2008/05 農業情報学会 論文賞
     施設園芸における生産履歴情報の収集と活用のためのフィールドサーバー用アプリケーションプログラムの開発 
    受賞者: 星 岳彦;塩沢栄地;新間恵太;高市 益行;平藤 雅之
  • 2004 日本植物工場学会(現、日本生物環境工学会) 学術賞
     高度植物生産を支援するコンピュータ利用システムの研究 JPN 
    受賞者: 星 岳彦
  • 2003 日本農業情報学会奨励賞
     JPN
  • 2002/05 農業情報学会 学術奨励賞
     施設園芸生産における情報化研究 
    受賞者: 星 岳彦
  • 2000 日本植物工場学会(現、日本生物環境工学会) 論文賞
     温室環境の遠隔計測・制御・解析用ソフトウェアの開発促進を目的とした環境計測制御システムにおける標準操作規約 JPN 
    受賞者: 星 岳彦;布施 順也;渡辺 勉;奥矢 毅;林 泰正;倉島 敏行
  • 1996/05 農業情報利用研究会(現、農業情報学会) 農業情報利用研究会賞 (日本農業ソフトウェア協会賞)
     先進的ネットワーク技術の開発と実践ならびに普及 
    受賞者: 星 岳彦
  • 1991 日本農業気象学会奨励賞
     培養液への光入射が培養液組成と野菜の生育に及ぼす影響 JPN 
    受賞者: 星 岳彦, 岡野 利明, 寺添 斉, 吉原 利一, 斎木 博
  • 1990 日本植物工場学会奨励賞
     JPN

Research Grants & Projects

  • Japan Society for the Promotion of Science：Grants-in-Aid for Scientific Research
    Date (from‐to) : 2023/04 -2026/03 
    Author : 星 岳彦
  • 日本学術振興会：科学研究費助成金 基盤研究(C)
    Date (from‐to) : 2019/04 -2022/03 
    Author : 星 岳彦
     
    環境モニタリングシステム、または、環境制御システムが導入された園芸施設から得られる多量 の施設環境記録データから、環境制御ノウハウ、機器性能の劣化、ヒューマンエラーの発生、計測 機器の冗長使用を減らすための当該環境項目の最尤推定値等の高次情報を抽出する基盤的研究 を実施する。
  • 農研機構 生物系特定産業技術研究支援センター：革新的技術開発・緊急展開事業 （うち地域戦略プロジェクト）
    Date (from‐to) : 2016/04 -2019/03 
    Author : 星 岳彦
     
    作物、施設方式で代表的な特徴を持つ中小規模施設を有する６県の各地域でUECSプラットホームを導入し、地域戦略の達成に向けた実証を行う。多棟分散施設の統合管理のためのセンサ・アクチュエータネットワークシステム、各地の様々な施設構造・設置機器に対応した環境制御システムを容易に構築可能なUECS用制御ロジック開発ツール等を導入することで、既存の施設を活かし各地域の個性豊かな生産を安定化･効率化し、増収が狙えるシステムを実用化する。
  • 文部科学省：科学研究費助成金 基盤研究(C)
    Date (from‐to) : 2016/04 -2019/03 
    Author : 星 岳彦
     
    コンピュータを付加した低コスト小型センシングシステムに、生体情報モデリングソフトウェアを内蔵し、その計測地点の局所的環境計測値から、植物物質生産、植物光形態形成、病害微生物の感染可能性などの推定値を指標として、表示・警報・記録する小型ツールを開発する。生産者は、1台または複数のツールを植物生産現場の気になる箇所に仮設する。現在市販されているCO2ガス濃度、温湿度、光など物性環境値の低コストセンサネットツールに代わり、その局所的環境が植物生産に与える生物的影響について直接的に可視化・監視可能な、スマート植物生産を強力に支援する手軽なツールとして使用できる可能性を示す。
  • Japan Society for the Promotion of Science：Grants-in-Aid for Scientific Research
    Date (from‐to) : 2013 -2015 
    Author : HOSHI Takehiko; YASUBA Ken-ichro; OKAYASU Takashi; KUROSAKI Hideto
     
    A decentralized autonomous environment control system using low-cost computer board was proposed and constructed. This system was designed assuming the introduction and dissemination of Japanese small-scale and simple-controlling greenhouses. The CPU board of an open architecture called Arduino was adopted as hardware. A measuring Shield and an actuator Shield were designed and manufactured for development of environmental measurement instruments, ventilation window controllers etc. Information format of the system conformed to communication protocol of the Ubiquitous Environmental Control System (UECS). To facilitate measurement and control software development, middleware, UARDECS, for Arduino IDE was released. The results was published through a Web page so that it can be utilized freely.
  • Ministry of Education, Culture, Sports, Science and Technology：Grants-in-Aid for Scientific Research(基盤研究(A))
    Date (from‐to) : 2011 -2013 
    Author : SAKAE SHIBUSAWA; Isao OGIWARA; Teruaki NANSEKI; Takehiko HOSHI; Teruo UETAKE; Tsuyoshi OKAYAMA; Yutaka SASAKI; Naoshi KONDO
     
    A scheme of agro-wisdom robot system involves three main requirements: model of decision making process, data category to be used for decision in agro-information database and communication functions of agricultural robot system. The decision making system involves four phase of intelligence: data, information, knowledge and wisdom. The data category is composed of four clusters: crop information, soil information, crop protection, and market information. The robot should have communication functions on intellectual properties or know-how, tacit knowledge, farm management, health and security, and farm work recording. With the results a new project'concurrent bio-science for innovative users with visualized agro-wisdom integration' was configured.
  • Ministry of Education, Culture, Sports, Science and Technology：Grants-in-Aid for Scientific Research(基盤研究(A))
    Date (from‐to) : 2011 -2013 
    Author : teruaki NANSEKI; Yoshiaki IIGUNI; Shirou TSUCHIDA; Kazunori AWAJI; Tomohiro UCHIYAMA; Hironori YAGI; Seishi NINOMIYA; Masaru YAMADA; Masaki KANAOKA; Kazumori NISHI; Shigeyoshi TAKEUCHI; Mamoru SAWADA; Yoshitaka FUJII; Yukio KINOSHITA; Syuusuke MATSUSHITA; Masaei SATOU; Takehiko HOSHI; Tomokazu YOSHIDA
     
    The objective of this research is to systematize useful findings on constructing a system to develop human resources to become the foundation for the next-generation of agricultural management reform from an interdisciplinary and international perspective. The main results of this research are categorized into four topics. First, current situations and issues of VET (the vocational education and training), were clarified based on the surveys in European major countries such as Switzerland, France, Germany, Denmark, Britain, the Netherlands, and Spain. Second, the current situations and issues of VET in advanced farm enterprises in Japan were analyzed statistically as well as by case studies. Third, the ICT applications and the farming skill know-how succession were clarified from the aspect of knowledge and the information management. Fourthly, the implications of these findings and perspective of the agriculture human resources development in next generation were given.
  • Ministry of Education, Culture, Sports, Science and Technology：Grants-in-Aid for Scientific Research(基盤研究(C))
    Date (from‐to) : 2009 -2011 
    Author : Takehiko HOSHI
     
    To aim informatization and highly-development of the protected horticultural production, development of application software supporting crop production in the greenhouse that was installed a ubiquitous environmental control system was studied. Information format was standardized in order to accelerate the software development and popularization. Some convenience applications, such as environment alerting software that detected conditions of diseases outbreak and insufficient photosynthesis by matching the measured environmental elements, were developed.
  • 農林水産省：先端技術を活用した農林水産研究高度化事業
    Date (from‐to) : 2004/04 -2006/03 
    Author : 星 岳彦
  • Ministry of Education, Culture, Sports, Science and Technology：Grants-in-Aid for Scientific Research(基盤研究(C))
    Date (from‐to) : 2002 -2004 
    Author : Takehiko HOSHI
     
    A method for effectively collecting, expressing, and disclosing information on the plant production process was proposed. To advance the computerization of plant production, all information related to a plant production was unified as a standard XML document The proposed standard was named BIX-pp (Bio-Information Exchange for Plant Production). To evaluate it a set of information related to hydroponics spinach production in one Tokai University greenhouse was converted into sample BIX-pp, data, and total twelve kinds of BIX-pp correspondence application programs were made. Evaluation results confirmed that BIX-pp was capable of uniting all plant production infuriation. It was considered that the reusability and the generality of the application programs were improved by making BIX-pp a standard form of information on the plant production in the program input. In addition, because the structure of information and the definition of the meaning were input to the application program at the same time, the information processing work was simplify; and the promotion of utilization of further plant production information was expected.
  • Ministry of Education, Culture, Sports, Science and Technology：Grants-in-Aid for Scientific Research(基盤研究(A))
    Date (from‐to) : 2000 -2002 
    Author : Toyoki KOZA; 久保田 智恵利; Takehiko HOSHI; Kenji OHMASA; Kenji KURATA; Chun CHANGHOO
     
    Our research showed that the closed transplant production system with artificial light and controlled environments is suitable for commercially producing high quality transplants in a reduced time period with reduced resource and environmental pollution. The production period could he reduced by 30% compared with the production period in the conventional, open production system (i.e. greenhouse). The water and CO_2 consumption in the closed system were, respectively, about 1/20 and 1/4 of those in the open system. Electric energy consumption per transplant was about 0.4MJ and its cost was about 0.5 Yen. This cost is relatively low compared with the price of vegetable transplants (50-100Yen). Hence, the closed system was economically competitive over the open system for many horticultural, medicinal and other crops and it has been commercialized in 2003 in Japan and is expected to be commercialized in other countries in the near future. More research is needed for examining the physiological responses of transplants to environments and the energy/mass balance of the closed system
  • Ministry of Education, Culture, Sports, Science and Technology：Grants-in-Aid for Scientific Research(基盤研究(A))
    Date (from‐to) : 1999 -2001 
    Author : Toyoki KOZAI; Tsuyoshi HONJO; Takehiko HOSHI; Kenji KURATA; 全 昶厚; Chieri KUBOTA; Changhoo CHUN
     
    Our research showed that the closed transplant production system with artificial light and controlled environments is suitable for commercially producing high quality transplants in a reduced time period with reduced resource and environmental pollution. The production period could be reduced by 30 % compared with the production period in the conventional, open production system (i.e. greenhouse). The water consumption in the closed system was about 10 % of that of the open transplant production system. Percentage of CO_2 fixed by transplants through photosynthesis over CO_2 supplied into the closed system was about 90 %. Energy consumption per transplant was about 0.4 MJ and its cost was about 1.5 Yen. This cost is relatively low compared with the price of vegetable transplants (50-100 Yen). Then, the closed system with artificial lighting can be used for commercial production of value-added transplants. More research is needed for examining the physiological responses of transplants to environments and the energy/mass balance of the closed system
  • 文部科学省：科学研究費補助金(奨励研究(A))
    Date (from‐to) : 1996 -1996 
    Author : 星 岳彦
     
    植物生産施設の環境分布の計測は、多数のセンサが必要であるなど、多大な労力を要し、容易に測定できなかった。そこで、自走式ロボットに各種センサを搭載し、施設内部を自動的に定期走行させ、施設内部の環境分布を計測するシステムを開発した。自走式ロボットは、Z80系のマイクロプロセッサを搭載した蓄電池式車両、気温・日射量センサ、センサからのデータをA/D変換しPCMCIAカードを介してノート型携帯パソコンに入力する信号入力装置、そして、ノート型携帯パソコンから構成した。ソフトウェアは、Z80アセンブリ言語、計測制御ソフトウェアGENIE、表計算ソフトウェアEXCELで作成した。自走式ロボットには赤外線反射型センサーを搭載した。このロボットは、施設内に設置した赤外線反射版を検知して、施設内の通路を巡回し、約1m間隔の気温と日射量の分布を測定できた。測定結果は、カラーの3次元グラフとして可視化が容易であり、施設内部の環境分布を理解し、さらに効率的・均質な温風暖房配風計画等を策定するために有用であった。これまで、主に実験用の限られた施設で多大な労力をかけて収集されていた環境分布を手軽に測定できることは、商業用施設の環境分布をこのシステムを用いて低コストで測定し、環境制御の改善に貢献できると考える。問題点としては、一点の計測のために20秒程度の計測時間と次の計測点までの移動時間を要するため、厳密な意味での施設全体の同時計測は不可能であること、通路両側の傾斜を利用して直進性を確保する蓄電池式車両の特性のため、平面な通路を持つ植物工場等の施設では走行路を作成する必要があること、等が指摘された。
  • 文部科学省：科学研究費補助金(奨励研究(A))
    Date (from‐to) : 1995 -1995 
    Author : 星 岳彦
     
    植物の生育は、過去から現在まで与えられた環境の蓄積を使って説明できる事が多い。コンピュータを用いた施設園芸の環境制御システムおよび圃場の気象観測システムでは、過去から現在までの環境計測データが記録されている。そこで、この環境計測データの有効活用を図り、その場所における植物のローカルな生育モデル作成を対話的・試行錯誤的に行う目的で、積算環境計測値に基いた生育モデル作成支援システムを開発した。システムは、オブジェクト指向プログラミングとGUIとが可能なVisualWorks Smalltalkを用いて開発した。環境と生育との関係を実測・推定したデータを使って、時々刻々の環境計測値を生育値に変換し、それらを線形・非線形関数でひとつの生育値に合成し、それを積算することで、実際的な植物生育モデルの構築を可能にした。さらに、横軸に時間、縦軸にその時間までの積算値として図示し、実測した植物の時間-生育曲線に合致するようにスケーリングすることで、環境計測値から植物生育値を推定可能にした。そして、東海大学実験温室の温室環境計測制御システムを動作試験に用い、本システムとLANで接続してデータ交換した。システムの各要素は、それぞれ、1個のウインドウとして表現された。このシステムを使用して、栽培温度条件の異なるホウレンソウの有効積算温度を調べ、播種後d日目のh時のTd, hから、播種後n日目の1株あたりの地上部生体重FWnを求めるモデルを作成できた。さらに、例えば、光と温度に関してモデルを考え、本システムですぐに試してみることも可能であった。生産現場に設置されている環境計測システムに本システムを接続することによって、その栽培条件での生育モデルを構築し、収集された環境計測データを生育の予測・評価に利用でき、植物生育まで拡張した実用的な環境計測制御システム構築に寄与すると考える。
  • 文部科学省：科学研究費補助金(奨励研究(A))
    Date (from‐to) : 1993 -1993 
    Author : 星 岳彦
     
    植物生産環境制御ソフトウェア開発の労力軽減を図り、生産者の意図した制御方法を容易にコンピュータに入力できるようにするために、オブジェクト指向プログラミング言語を用い、GUI環境での環境制御システム構築を行った。その結果、環境制御システムの構成要素をオブジェクトクラスに分割してプログラミングすることによって、環境制御システムの要素を部品化でき、その改良・カスタム化に際してのソフトウェア開発労力を50%以下に軽減できることが示された。また、対話的にユーザーインターフェースを設計でき、また、アイコン(絵文字)等の図形を利用できるようになったことで、従来のシステムと比較して、より操作しやすい環境制御システムを構築できたと考える。加えて、環境制御システムをLANに接続して植物生産施設の環境制御データとのゲートウェイ機能を持たせ、さらに、LAN経由でインターネットに接続した。LAN用に規格化されている通信制御ソフトウェアを使用することで、ほとんど全ての機種のパソコン、ワークステーションを使って、環境制御システムの遠隔操作や環境計測データの収集が可能になった。また、インターネットを通じて、全世界から環境制御システムへのアクセスが可能であった。今後は、通信とGUI環境における植物の成育状態などの静止画像及び動画像データの利用方法、および、環境制御方法に関する共通的な操作規約(プロトコル)の作成が必要であると考える。
  • Environmental control system for plant production
  • Study on Plant Factories
  • Study on Computer Assisted Systems for Plant Production

Committee Membership

  • 2023/05 - Today   The Japanese Society of Agricultural Informatics (JSAI)   President and Representative Director

Other link

researchmap


Copyright © MEDIA FUSION Co.,Ltd. All rights reserved.