Patent ID: 7339489
Filing Date: 2008-03-04
Classification: G08B

Abstract:
1. A wireless communication function equipped sensor comprising: a sensor unit comprising at least one physical quantity detection device, which detects a physical quantity of a detection object; an electric power generator; an electric power charging device which is charged by electric power generated by said electric power generator; a processing device which processes detection results from said at least one physical quantity detection device; a wireless transmitting device which transmits said detection results to a wireless communication device by wireless signals; a wireless receiving device which receives wireless signals from said wireless communication device; and a power control device which supplies the electric power charged by said electric power charging device to said load devices, wherein said load devices are activated when the electric power charged by said electric power charging device reaches a level sufficient to activate said load devices, wherein the sensor unit, processing device, wireless transmitting device and wireless receiving device, are activated intermittently using electric power charged by said electric power charging device, said sensor unit, processing device, wireless transmitting device and receiving device being load devices of the electric power charging device, and wherein said wireless receiving device is activated after the transmitting device is activated.