Patent ID: 7302852
Filing Date: 2007-12-04
Classification: G01H

Abstract:
1. A vibration measuring and monitoring system for an object, comprising: a laser unit configured for emitting a laser beam; a laser sensor unit configured for receiving the laser beam, the laser sensor detecting a light intensity signal of the laser beam; and a processor for processing the light intensity signal of the laser beam so as to obtain a vibration signal in association with a vibration of the object; wherein the laser unit and the laser sensor unit are arranged at two sides of the object, the laser beam crosses the object and is received by the laser sensor unit, and the light intensity signal is calculated using the following equation:  wherein x is a coordinate dimension: x 0 is the position of the center of the laser beam: and W is a spot size of the laser beam at the position where the light intensity of the laser beam drops to e −2 times the light intensity of the laser beam at the center of the laser beam.