ACCELERATION SENSOR DEVICE AND SENSOR NETWORK SYSTEM

摘要

Provided are an acceleration sensor having a configuration in which the consumption of power to be consumed can be reduced and the sensor itself can be miniaturized without using any piezoelectric sensor or piezoelectric bimorph and a sensor network system. An acceleration sensor device configured from a conductor and an electret which moves relatively to the conductor and provided with the acceleration sensor which is an electrostatic induction-type conversion device for converting electric energy into kinetic energy comprises an acceleration detection section for detecting a signal in accordance with acceleration from the AC voltage outputted by the acceleration sensor, a rectification section for rectifying the AC voltage, and a power supply circuit which includes a battery for operating circuits in the device and charges the battery with a rectified DC voltage as electric energy.