Self-powered acoustic emission sensor

摘要

PURPOSE: A sound emission sensor for an independent drive is provided to aim the light weight and miniaturization of a sound emission sensor by removing the built-in battery form a wireless sound emission sensor. CONSTITUTION: A sound emission sensor for an independent drive comprises a signal detector(110), an amplifier(130), a signal processor(140), a communication module(150) and a self-power feeder(120). The signal detector detects the sound emission signal generated by the measurement target. The amplifier amplifies the sound emission signal output from the signal detector. The signal processor processes and outputs the amplified sound emission signal. The communication module changes and transmits the sound emission signal output from the signal processor into a radio signal. The self-power feeder generates and stores the power through an independent drive. The self-power feeder supplies the stored power to the amplifier, the signal processor and the communication module as the driving power.