基于OTDR的准分布光纤温度报警系统  

Study on the Quasi-distributed Fiber Temperature Warning System Based on OTDR

作　　者：魏康林[1] 温志渝[1] 邹建[1] 张弘 

机构地区：[1]重庆大学光电工程学院,重庆400030 [2]振东光电有限公司,浙江宁波315400

出　　处：《压电与声光》2010年第2期329-332,共4页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金资助项目(59578051)

摘　　要：针对矿山、油田等易燃易爆地段温度报警的空间准确定位要求,研究了基于光时域反射计(OTDR)原理的准分布光纤温度报警系统。依据系统的结构与原理分析,完成了半导体激光器(LD)的高速驱动电路和雪崩光电二极管(APD)增益的温漂补偿电路等硬件设计,优化了系统软件的编译。结合在线调试,设计了基于形状记忆效应的温度阈值执行器。试验结果表明系统能稳定运行,且具有1.5 m的空间分辨率和低于16 s的响应时间等优良的性能参数。Aiming at the requirement to accurately locate the temperature warning position in the inflammable and explosive place such as mine and oil field, we had studied the quasi-distributed fiber temperature warning system （QDFTWS） based on optical time domain reflectometer（OTDR）. According to system＇s principle and structure, we had designed a high-speed driving circuit for LD and compensation circuit for APD＇s gain, and we also optimized the system software. Relying on on-line debugging, we had designed the threshold temperature actuator grounded on shape memory alloy （SMA）. The experimental results showed that the system can operate stably, and has such ex- cellent performance parameter as 1.5 m spatial resolution and the response time of less than 16 s.

关 键 词：准分布光纤温度报警系统(QDFTWS) 光时域反射计(OTDR) 形状记忆合金(SMA) 测试 

分 类 号：TP215[自动化与计算机技术—检测技术与自动化装置]