Method of determining FOVM sensor beat frequency.

摘要

A method for determining a beat frequency in a vibration sensing system attached to an electrical generator characterized by the steps of generating a vibration signal indicative of a vibrational frequency and amplitude of the generator; and obtaining a beat frequency from the vibration signal by storing and processing time interval data representing the time intervals between zero crossings of the vibration signal. A generator (10) optical vibration sensor (12) and computer (14) constitute the vibration sensing system (16). The computer is programmed to analyze the time interval data to obtain the beat frequency.