Power supply monitoring system detects series arcs from ultrasonic vibration

摘要

A power supply monitoring system uses ultrasonic vibration sensors (2) on a conductor (3) to detect characteristic signals (8) from a series arc (7) with envelope detector (12) and filtering (15, 17) in the processor (1) converting the input signal (S1) to an arc indication signal (S2) by comparison with an adaptive threshold.