锚索内嵌光纤布喇格光栅pH值传感器制作与性能分析  

Fabrication and performance analysis of fiber Bragg grating pH sensor embedded in anchor cable

作　　者：张群英 闫磊 江雪[1] 亢文波 朱万旭[1] ZHANG Qunying;YAN Lei;JIANG Xue;KANG Wenbo;ZHU Wanxu(College of Civil Engineering and Architecture,Guilin University of Technology,Guilin Guangxi 541004,China;College of Earth Sciences,Guilin University of Technology,Guilin Guangxi 541004,China)

机构地区：[1]桂林理工大学土木与建筑工程学院,广西桂林541004 [2]桂林理工大学地球科学学院,广西桂林541004

出　　处：《光通信技术》2021年第5期40-43,共4页Optical Communication Technology

摘　　要：针对现有光纤光栅pH值传感器响应范围窄、灵敏度低和适用场合受限等因素而不能用于锚索内部pH值检测的问题,提出将光纤布喇格光栅(FBG)pH值传感器嵌在锚索内用以监测锚索内部的pH值方法。分析了FBG pH值传感器的工作原理,并将FBG pH值传感器嵌在钢绞线上进行了相应的试验研究。试验结果表明:在pH值为4~11时,锚索内嵌FBG pH值传感器存在一个最佳的涂覆厚度,使传感器的pH值响应灵敏度达到最大值,且将FBG pH值传感器嵌在钢绞线内时未改变FBG的温度特性。In view of the problems that the existing fiber grating pH sensor can not be used for the detection of pH in the anchor cable due to its narrow response range,low sensitivity and limited application,this paper puts forward a method that fiber Bragg grating(FBG)pH sensor is embedded in the anchor cable to monitor the pH inside the cable.The working principle of FBG pH sensor is analyzed,and the FBG pH sensor is embedded in the steel strand for corresponding experimental research.The test results show that when the pH is 4-11,there is an optimum coating thickness in the FBG pH sensor embedded in the anchor cable,which makes the sensitivity of the sensor to the maximum value of pH response,and the FBG pH sensor embedded in the steel strand does not change the temperature characteristics of FBG.

关 键 词：PH值传感器 光纤布喇格光栅 水凝胶 锚索 钢绞线 

分 类 号：TN256[电子电信—物理电子学]