A chirped fiber optic Bragg grating-based cutter of shield tunnel boring machine real time monitoring method

被引：0
|
作者：
Wang, Jin [1 ,2 ]
Zhu, Wanshan [1 ,2 ]
Jiang, Lei [1 ,2 ]
Jiang, Junfeng [1 ,2 ]
Wang, Shuang [1 ,2 ]
Liu, Tiegen [1 ,2 ]
机构：
[1] Tianjin Univ, Coll Precis Instrument & Optoelect Engn, Tianjin 300072, Peoples R China
[2] Tianjin Univ, Minist Educ, Key Lab Optoelect Informat Technol, Tianjin 300072, Peoples R China
来源：
ADVANCED SENSOR SYSTEMS AND APPLICATIONS VIII | 2018年 / 10821卷
基金：
中国国家自然科学基金;
关键词：
CFBG; shield machine; cutter wear; monitoring method; fiber sensor;
D O I：
10.1117/12.2502551
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We propose a real-time monitoring method for shield tunnel boring machine cutter wear based on chirped fiber Bragg grating (CFBG). We use the chirped fiber Bragg grating as the wear detection sensor. When the wear occurs at the end face of the wear detection sensor (the end face of chirped fiber Bragg grating), the grating area of the chirped fiber Bragg grating will shorten with the occurrence of wear, which causes the bandwidth of the grating reflection spectrum to be narrowed, and the correlation theory of the fiber Bragg grating is used to calculate the wear rate. Experimental data shows that the sensor can survive in the actual operating conditions of the shield tunnel boring machine. After calibration, measurement accuracy can less than 1mm, and it can be used for real time wear detection of large machinery, such as shield tunnel boring machine.
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页数：8
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