摘要
介绍一种新型的光纤声发射传感器。光路设计合理，采用低零漂、低噪声的运算放大器、六阶巴特沃兹滤波电路及微机对信号处理，使其分辨率高达Ａ。级（１０－１０ｍ），频率范围为１００ｋＨｚ～１．４ＭＨｚ，且能应用于在线检测。
A novel optical fiber acoustic emission sensor is described. Which is following properties: reasonable scheme, a few of low-noise, low drift operational, a 6-pole Buterworth filter and computer as the signal processor. Its resolution was as high A°-level(10 -10 m),bandwidth is from 100 kHz to 1.4 MHz and on-line measurement to be possible.
出处
《传感器技术》
CSCD
1998年第2期31-32,35,共3页
Journal of Transducer Technology
基金
机械工业部教育司基金
