基于数字信号处理的干涉型光纤传感器检测系统的研究与设计  

Research and Design of an Interferometric Optical Fiber Sensor Measuring System Based on Digital Signal Processing

作　　者：张诚[1] 王金海[1] 陈才和[2] 张波[1] 岳泉[1] 

机构地区：[1]天津工业大学信息与通信工程学院,天津300160 [2]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：《传感技术学报》2007年第1期64-67,共4页Chinese Journal of Sensors and Actuators

基　　金：国家自然科学基金资助(49874031)

摘　　要：本文基于数字信号处理技术,对干涉型光纤传感器数字检测系统进行研究与设计.分析了合成外差解调算法的基本原理,描述了检测系统的整体构架.重点讨论了采用DSP Builder技术对解调部分的设计,实现解调算法的数字信号处理和智能化数据传输接口并行工作,使系统实时、线性地跟踪到被测信号.通过实验测试,该解调系统的工作频带约为10 Hz^1kHz,具有较好的抗干扰性.An interferometric optical fiber sensor measuring system based on digital signal technology is designed. The operating principle of synthetic heterodyne arithmetic is introduced, and the frame of measuring system is described. The design of demodulation block, which uses DSP Builder technology, is mainly discussed. And DSP and intelligent data communication interface run in parallel. As a result, a real time and linear measured signal is detected. By testing experiment, the system works between 10 Hz and 1 kHz, and has a favorable immunity to interference.

关 键 词：干涉型光纤传感器 数字信号处理 合成外差解调算法 DSP BUILDER 可编程片上系统 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]