期刊
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
卷 69, 期 5, 页码 2913-2920出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2020.3030901
关键词
Sensors; Rectennas; Frequency measurement; Voltage measurement; Wireless sensor networks; Power measurement; Digital agriculture; tile drainage; underground sensors; wireless power transfer
资金
- Scalable Manufacturing of Aware and Responsive Thin Films (SMART) Consortium at Purdue University
This article introduces a new technique for wireless powering of agricultural sensors buried deep underground, using agricultural drainage tiles as waveguides and converting electromagnetic waves into DC power with high-efficiency rectifiers to charge underground sensor batteries. The experimental validation and measurements conducted in various scenarios demonstrate the feasibility of the proposed technique.
In this article, a new technique for wireless powering of agricultural sensors buried deep underground is introduced and experimentally investigated. In this technique, the agricultural drainage tiles are utilized as waveguides to carry electromagnetic (EM) energy over long distances. By using high-efficiency rectifiers, the propagating EM waves are then converted into dc power to charge the batteries of underground sensors. A prototype 1 GHz rectenna system is fabricated and implemented on an 8 in tile to prove this concept experimentally. Various measurements are conducted for both the rectenna and the entire tile system, including realistic scenarios such as partially covered tiles and tile in the presence of water. Considering the emerging digital agriculture, the proposed technique will open the potential for detailed underground geochemistry studies, which will allow us to better monitor the transport of liquids and gases through millions of miles of agricultural tile drainage networks.
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