Operating point deviation judgment method and device for optical acoustic sensor

• Main Authors: MA ZHENJUN, REN DIPENG, ZHANG MENGYING, QI ZHIMEI, HU XINYU, WU GAOMI
• Format: Patent
• Language: Chinese; English
• Published: 05.11.2019
• Subjects: MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES; MEASURING; PHYSICS; TESTING

The invention relates to an operating point deviation judgment method and device for an optical acoustic sensor. The optical acoustic sensor comprises a light interference type acoustic probe, a photoelectric detector and a signal acquisition and processing module. According to the operating point deviation judgment method of the invention, frequency multiplied signals caused by operating point deviation are adopted as a judgment standard, and the working point state of the optical acoustic sensor is automatically identified and is adjusted to be in an optimal position. The operating point deviation judgment method and device for the optical acoustic sensor of the present invention have the advantages of simple desired system, low cost, low power consumption cost, in-situ real-time adjustment, high control precision and the like, and are particularly suitable for a portable acoustic detection device working in a complex environment. 一种光学声传感器工作点偏离判断方法及其装置，所述光学声传感器包括光干涉型声探头、光电探测器和信号采集与处理模块，该光学声传感器工作点偏离判断方法基于工作点