Environmental Control in Biology 56(4) 149-155 Oct 2018 [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...
Environmental Control in Biology 56(3) 107-112 Jul 2018 [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...
Takehiko HOSHI, Ken-ichiro YASUBA and Hideto KUROSAKI
Shokubutsu Kankyou Kougaku 28(4) 163-171 Dec 2016 [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...
Agricultural Information Research 25(3) 86-95 Oct 2016 [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 st...
Agricultural Information Research 25(3) 79-85 Oct 2016 [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...
KUROSAKI, H., YASUBA, K., OKAYASU, T. and HOSHI, T.
Agricultural Information Research 25(1) 19-28 Apr 2016 [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-r...
YASUBA, K., TANE, C., TANAKA, Y., GOTO, T., YOSHIDA, Y., KUROSAKI, H., OKAYASU, T. and HOSHI, T.
Agricultural Information Research 25(1) 12-18 Apr 2016 [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 UEC...
T. Hoshi, K. Suzuki, J. Imahara, K. Yasuba and T. Nanseki
Acta Horticulturae 1037 627-634 May 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 ...
Automation in Agriculture - Securing Food Supplies for Future Generations
HOSHI, Takehiko (Part:Joint Work, Ubiquitous Environment Control System: An Internet-of- Things–Based Decentralized Autonomous Measurement and Control System for a Greenhouse Environment)
IntechOpen (DOI: 10.5772/intechopen.71661) Mar 2018 ISBN:978-953-51-3873-0
A low-cost and flexible system for environmental measurement and control in greenhouses based on decentralized autonomous technics, Ubiquitous Environment Control System (UECS), was proposed in 2004. The UECS is composed of autonomous nodes as the...
Discussions to introduce UECS to middle or small-scale greenhouses in Kanagawa pref.
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
Development of mobile Spectrometer by Digital Fabrication Techniques and Trial to Apply Multipoint Continuous Spectroscopic Analysis of Light Environment in Greenhouse Tomato Canopy
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 s...
Development of Spectroscopy Gadget for Plant Production by Digital Fabrication
Takehiko Hoshi
Annual Conference of Society of Japanese Agricultural Meteorology 30 Mar 2017
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 maki...
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 per...
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. Inf...
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 X...
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 pol...
