Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Ryo Shigeta"'
Publikováno v:
SICE Journal of Control, Measurement, and System Integration, Vol 10, Iss 5, Pp 350-359 (2017)
Unmanned aerial vehicle (UAV)-assisted microwave wireless power transfer (WPT) enables the deployment of radio frequency (RF)-power-driven, battery-less sensor nodes in rural areas such as farm fields. Unlike in urban areas, suitable ambient radio wa
Externí odkaz:
https://doaj.org/article/369187c344f348efbf3a78275e01fbd5
Autor:
Yuki Kojima, Ryo Shigeta, Naoya Miyamoto, Yasutomo Shirahama, Kazuhiro Nishioka, Masaru Mizoguchi, Yoshihiro Kawahara
Publikováno v:
Sensors, Vol 16, Iss 8, p 1292 (2016)
Soil moisture is an important property for agriculture, but currently commercialized soil moisture sensors are too expensive for many farmers. The objective of this study is to develop a low-cost soil moisture sensor using capacitors on a film substr
Externí odkaz:
https://doaj.org/article/199c1ae2f0b348ffa73bbb154ad8fe75
Publikováno v:
Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies. 4:1-22
Energy harvesting (EH) technologies are useful for the semi-permanent operation of wireless sensor networks, especially, for agricultural monitoring as the networks need to be installed in large areas where power supply is unavailable. In this paper,
Publikováno v:
Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management). 78:II_182-II_189
Publikováno v:
SICE Journal of Control, Measurement, and System Integration. 10:350-359
Unmanned aerial vehicle (UAV)-assisted microwave wireless power transfer (WPT) enables the deployment of radio frequency (RF)-power-driven, battery-less sensor nodes in rural areas such as farm fie...
Publikováno v:
UbiComp/ISWC Adjunct
In this paper, we present a novel approach to the realization of a battery-free soil profile probe that uses the temperature difference between the near-surface air and the underground soil as a power source. The temperature change in the underground
Publikováno v:
2018 IEEE SENSORS.
Precision agriculture is a potential candidate for enhancing productivity and conserving water resources. In particular, irrigation activities can be optimized by collecting soil conditions using soil sensors to ensure water resource sustainability.
Publikováno v:
MobiQuitous (Adjunct Proceedings)
In this paper, we present a navigation algorithm for unmanned aerial vehicles (UAVs) for battery-less agricultural sensor systems. In order to efficiently power sensor nodes from UAVs using wireless power transfer, an appropriate UAV navigation algor
Autor:
Rushi Vyas, Manos M. Tentzeris, Yoshihiro Kawahara, Tatsuya Sasaki, Ryo Shigeta, Tohru Asami, Duong Minh Quan
Publikováno v:
IEEE Sensors Journal. 13:2973-2983
In this paper, we present a software control method that maximizes the sensing rate of wireless sensor networks (WSNs) that are solely powered by ambient RF power. Unlike all other energy harvesting WSN systems, RF-powered systems present new challen
Autor:
Kazuhiro Nishioka, Ryo Shigeta, Yoshihiro Kawahara, Tohru Asami, Yuki Kojima, Shirahama Yasutomo
Publikováno v:
2015 IEEE SENSORS.
In this paper, we present a suitable electrode design for capacitive sensor for low-cost soil moisture profile probes. The probe can be implemented in quite low cost because it only requires single-side conductive patterns on PET film. Although inter