A sensing system for sensing conditions or characteristics associated with a process or thing. The sensing system includes one or more energy converters and a sensor, which are coupled to the process or thing. A node is coupled to the sensor and the energy-converter, and the node is powered by output...http://www.google.fr/patents/US7768425?utm_source=gb-gplus-shareBrevet US7768425 - Wireless sensing node powered by energy conversion from sensed system
Wireless sensing node powered by energy conversion from sensed system