三分量全光纤加速度检波器及数字处理系统

英文篇名：Three-Component All-Fiber Acceleration Seismometer and Digital Processing System
中文刊名：光学学报
英文刊名：Acta Optica Sinica
作者：严志刚 ; 丁桂兰 ; 陈才和 ; 崔宇明
英文作者：Yan ZhigangDing GuilanChen CaiheCui Yuming(Key Laboratory of Optic-Electronics Information Technical Science of Education Ministry ; College of Precision Instrument and Opto-Electronics Engineering ; Tianjin University ; Tianjin 300072)
中文关键词：导波和光纤光学 ; 三分量全光纤加速度检波器 ; 迈克耳孙干涉仪 ; 数字信号处理 ; 共振频率 ; 频率响应
英文关键词：guided wave and fiber optics ; three-component all-fiberoptic acceleration seismometer ; michelson interferometer ; digital signal processing ; resonant frequency ; frequency response
出版日期：2003-12-17
机构：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 ,天津300072 ,天津300072 ,天津300072
年：2003
期：12
出版单位：光学学报

摘要

研制出三分量全光纤加速度检波器及其数字信号处理系统。该检波器由一个质量块 ,六个顺变柱体 ,三组迈克耳孙干涉仪光路组成。顺变柱体是检波器敏感元件中的关键部件。该检波器数字信号处理系统以TI公司的高性能数字信号处理芯片为核心 ,辅以必要的电路 ,实现了对加速度信号的高精度检测和误差信号的补偿。测试结果表明 ,检波器在共振频率以上有较好的频率响应 ,输入信号与输出信号吻合较好 ;检波器在共振频率以下亦有较好的频率响应。最后给出了检波器频率响应曲线
Three-component all-fiber acceleration seismometer and its digital signal processing (DSP) system are developed. The seismometer is composed of a seismic mass, six cylinders and three sets of Michelson interferometer light path. The six cylinders are critical parts among the sensor elements. An advanced quality digital signal processing (DSP) chip equipped with necessary circuits has been used in its digital signal processing system, a high accurate detection of the acceleration signal has been achieved and the environmental interference signal has been effectively compensated. Test results indicate that the accelerometer has better frequency response above the resonant frequency, and the output signal is in correspondence with the input signal. The accelerometer also has better frequency response under the resonant frequency. At last, the curve of seismometer frequency response is given.

引文

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