Affiliation:
1. Laboratory for Future Interdisciplinary Research of Science and Technology (FIRST), Institute of Innovative Research (IIR), Tokyo Institute of Technology, R2-39, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
Abstract
In optical wireless power transmission (OWPT), detection and positioning of the photovoltaic device (PV) in real space is essential before power transmission. One of the candidates for the robust detection of PVs is differential absorption imaging, which has been proposed by the authors. In this method, raw images are captured using absorbable (λON) and non-absorbable (λOFF) wavelengths of the PV. Then, the PV is detected from the differential image of these. In this report, the positioning of a PV on a real two-dimensional plane was investigated by means of this differential imaging. Primarily, stereo imagery was utilized for positioning. Non-stereo positioning was also investigated, in which the azimuth angle (direction) was estimated from the position of the PV in the differential image, and ranging was performed using its apparent size. There are diffuse and non-diffuse (specular) options for the λOFF reflection of the rear surface of the PV. Positioning accuracy was measured with regard to this characteristic as well as the attitude angle. Especially for a PV with specular characteristics, even though its positioning accuracy was affected by its attitude angle, the accuracy could be improved by increasing the irradiation light power. On the other hand, direction determination was stable for a wide angular range of attitudes.
Funder
Tsurugi-Photonics Foundation
Takahashi Industrial and Economic Research Foundation
Mechanical Social Systems Foundation and Optoelectronics Industry and Technology Development Association
Subject
Radiology, Nuclear Medicine and imaging,Instrumentation,Atomic and Molecular Physics, and Optics
Reference30 articles.
1. Frolova, E., Dobroskok, N., and Morozov, A. (2021, January 10–11). Critical Review of Wireless Electromagnetic Power Transmission Methods. Proceedings of the International Scientific and Practical Conference “Young Engineers of the Fuel and Energy Complex: Developing the Energy Agenda of the Future” (EAF 2021), Saint Petersburg, Russia.
2. (2022, May 23). PowerLight Technologies. Available online: https://powerlighttech.com/.
3. Charging A Smartphone Over the Air: The Resonant Beam Charging Method;Liu;IEEE Internet Things J.,2022
4. The Wireless Power Company (2022, May 09). Wi-Charge. Available online: https://www.wi-charge.com.
5. Ground-based investigation of a directional, flexible, and wireless concentrated solar energy transmission system;Wang;Appl. Energy,2022
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