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Pedro Carvalhaes-Dias, Flávio J.O. Morais, Luís F. C. Duarte, Andreu Cabot and J. A. Siqueira Dias
We present an autonomous sensor to measure soil water content that uses a single heat pulse probe based on a transistor encapsulated in a porous block. The sensor uses a bipolar junction transistor, which performs as both a heating and temperature-sensin...
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