| 摘要 |
A sensor system comprises a self-powered wireless sensor node 2 including at least one sensor 4 adapted to sense one or more parameters, a non-volatile memory 14 for storing data corresponding to the sensed parameters, a wireless transmitter 26, 28 for transmitting the data to an external device 30, at least one controller 8 for controlling the operation of the at least one sensor, the memory and the wireless transmitter, a first electrical power source comprising an energy harvester 16 adapted to generate electrical energy from an environmental energy input and a second electrical power source comprising a radio frequency power supply 22 adapted to generate electrical energy from a radio frequency energy input.
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