空心顺变柱体型三分量全光纤加速度地震检波器  

Hollow-compliant-cylinder-type Three-component All-fiber Optical Acceleration Geophone

作　　者：刘洋[1] 陈才和[1] 丁桂兰[1] 崔宇明[1] 

机构地区：[1]天津大学精密仪器与光电子工程学院光电信息技术科学教育部重点实验室,天津300072

出　　处：《光电子．激光》2003年第11期1138-1141,共4页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(49974010)

摘　　要：设计了介绍一种新型空心顺变柱体型三分量全光纤加速度地震检波器。该检波器作为加速度检测设备,采用3个迈克尔逊光纤干涉仪光路,用6个空心顺变柱体共同支撑1个质量块构成三维简谐振子系统。对实验样机进行的模拟实验测试表明:共振频率为308Hz,工作频带向低频移动,频响特性曲线与理论计算相符。加速度灵敏度的理论计算值为15.7×103rad/g,能满足大多数场合下对加速度精确测量的要求。A new type of hollow-component-cylinder three-component all-fiber optical acceleration geophone was designed and fabricated, which consists of three Michelson interferometers. The three components share one seismic mass, supported by 6 hollow compliant cylinders, to constitute three-dimension harmonic oscillator system. The simulation experiment results of prototype show that response frequency is 308 Hz and operating frequency moves to low-frequency band. Frequency response curve is in good agreement with the theoretical calculated results. Theoretical calculated acceleration sensitivity is 15.7×103 rad/g. The system can be applied to precision measurements of accelerations in most situations.

关 键 词：空心顺变柱体 三分量 全光纤加速度地震检波器 迈克尔逊光纤干涉仪 三维简谐振子 

分 类 号：TH824[机械工程—仪器科学与技术] TN253[机械工程—精密仪器及机械]