WIRELESS ACOUSTIC EMISSION SENSOR MODULE BASED ON MAGNETIC POWER, ON-LINE PARTIAL DISCHARGE MEASUREMENT SYSTEM USING THE SENSOR, AND THEIR METHOD

摘要

PURPOSE: An insulating blazing fire state real-time monitoring apparatus of the electric power facilities for checkup wireless ultrasonic sensor which magnetic field is used for power source and the electric power facilities using this and method uses the magnetic field generating the power source for the operation of the ultrasonic sensor in the electric power facilities of the live cable state. The ultrasonic sensor can be used semi-permanently without the shut down. CONSTITUTION: A wireless power supplier module(11) occurs the electricity by using the magnetic field. The ultrasonic probe(12) measures the partial discharge signal created due to the insulating blazing fire at the electric power facilities inside. The preamplifier amplifies the measured partial discharge signal in the ultrasonic probe. The analog digital converter(14) changes the amplified sensor output voltage of the analog type outputted from preamplifier into digital.