基于塑料光纤的大应变测量研究  

Research on large strain measurement based on plastic optical fiber

作　　者：贾相飞[1] 林玉池[1] 黄银国[1] 沈小燕[1] 

机构地区：[1]天津大学精密测试技术及仪器国家重点试验室,天津300072

出　　处：《传感器与微系统》2010年第12期22-24,共3页Transducer and Microsystem Technologies

基　　金：国家"863"计划资助项目(2006AA040106)

摘　　要：分析了塑料光纤(POF)光强弯曲损耗与弯曲半径的关系;推导了基于弯曲效应的POF测量大应变的数学模型,并建立了大应变测量系统。重点通过实验研究,验证了理论分析的正确性,实验结果表明:应变测量范围可达8%以上,测量灵敏度高,重复性好。The relationship between bend losses in plastic optical fibers and bend radius is analyzed theoretically. The mathematical model of large strain measuring based on plastic optical fibers is deduced and a corresponding measurement system is established. Through experimental research, the measured values are verified coincide well with the model. Experimental results show that the strain measurement range can be up to 8% and the system has advantages of high sensitivity and good repeatability.

关 键 词：塑料光纤 大应变测量 弯曲损耗 强度调制 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]