固体散射体二维位移传感器的研究  

Study on 2D Displacement Remote Measurement Sensor

作　　者：洪昕[1] 贺顺忠[1] 蒋诚志[1] 陈林才[1] 

机构地区：[1]天津大学测试计量技术及仪器国家重点实验室,天津300072

出　　处：《中国激光》2001年第4期375-378,共4页Chinese Journal of Lasers

基　　金：国家教委博士点基金

摘　　要：应用激光多普勒效应 ,设计了用两声光调制器获得三束测量光的声光调制、双光束差动、大口径接收的光学结构 ,提出了计算机实时跟踪丢失信号的位移补偿方法 ,实现了对普通纸张表面和前苏联生产的各种加工方法(车、铣、刨、磨 )的粗糙度样板的二维面内位移的远距离测量 ,测量距离为 10m ,测量精度为± 0 5 %。A novel displacement remote measurement by utilizing Doppler effect was proposed. The Doppler shift of differential structure was analyzed theoretically. The double-beam differential optical system with a optical-acoustic modulating structure, big aperture collecting backward scattering light, and compensating the losing signal by computer tracking software was designed. The displacement measurement of paper and rough mental surface at distance of 10 meters has been achieved with an accuracy of ±0.5%.

关 键 词：激光多普勒效应 声光调制 位移遥测 位移补偿 传感器 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]