The Analysis of Angle Resolution of Stress Vector Sensor Based on Optical Fiber Sensing Cable for High Speed Railway Traffic

doi:10.1007/s12204-018-1910-4

sa ›› 2018, Vol. 23 ›› Issue (1): 61-65.doi: 10.1007/s12204-018-1910-4

The Analysis of Angle Resolution of Stress Vector Sensor Based on Optical Fiber Sensing Cable for High Speed Railway Traffic

DENG Shungea (邓顺戈), MA Xina (马鑫), LI Xinwana,b,c* (李新碗)

(a. State Key Laboratory of Advanced Optical Communication Systems and Networks; b. University of Michigan - Shanghai Jiao Tong University Joint Institute; c. Shanghai Institute for Advanced Communication and Data Science, Shanghai Jiao Tong University, Shanghai 200240, China)

出版日期:2018-02-01 发布日期:2018-02-01
通讯作者: LI Xinwan (李新碗) E-mail:lixinwan@sjtu.edu.cn

The Analysis of Angle Resolution of Stress Vector Sensor Based on Optical Fiber Sensing Cable for High Speed Railway Traffic

DENG Shungea (邓顺戈), MA Xina (马鑫), LI Xinwana,b,c* (李新碗)

(a. State Key Laboratory of Advanced Optical Communication Systems and Networks; b. University of Michigan - Shanghai Jiao Tong University Joint Institute; c. Shanghai Institute for Advanced Communication and Data Science, Shanghai Jiao Tong University, Shanghai 200240, China)

Online:2018-02-01 Published:2018-02-01
Contact: LI Xinwan (李新碗) E-mail:lixinwan@sjtu.edu.cn

摘要/Abstract

摘要： With the development of high speed railway traffic, the structure health monitoring for high-speed rail is necessary due to the safety issue. Optical fiber sensing technology is one of the options to solve it. Stress vector information is the important index to make more reasonable judgments about railway safety. However, information sensed by lots of commercial optical sensors is scalar. According to the stress filed distribution of rail, this paper proposes a new type of stress vector sensor based on optical fiber sensing cable (OFSC) with a symmetrical seven optical fibers structure and analyzes the relations between angle resolution and distance between adjacent of optical fibers through finite-element software (ANSYS) simulation. Through reasonable distance configuration, the angle resolution of the OFSC can be improved, and thus stress vector information, including the stress magnitude and the angle of stress, can be more accurately obtained. The simulation results are helpful to configure OFSC for angle resolution improvement in actual practice, and increase the safety factor in high speed railway structure health monitoring.

关键词: optical fiber sensing cable, rail, angle resolution, stress, finite element analysis

Abstract: With the development of high speed railway traffic, the structure health monitoring for high-speed rail is necessary due to the safety issue. Optical fiber sensing technology is one of the options to solve it. Stress vector information is the important index to make more reasonable judgments about railway safety. However, information sensed by lots of commercial optical sensors is scalar. According to the stress filed distribution of rail, this paper proposes a new type of stress vector sensor based on optical fiber sensing cable (OFSC) with a symmetrical seven optical fibers structure and analyzes the relations between angle resolution and distance between adjacent of optical fibers through finite-element software (ANSYS) simulation. Through reasonable distance configuration, the angle resolution of the OFSC can be improved, and thus stress vector information, including the stress magnitude and the angle of stress, can be more accurately obtained. The simulation results are helpful to configure OFSC for angle resolution improvement in actual practice, and increase the safety factor in high speed railway structure health monitoring.

Key words: angle resolution, stress, finite element analysis, optical fiber sensing cable, rail

中图分类号:

TN 29

DENG Shungea (邓顺戈), MA Xina (马鑫), LI Xinwana,b,c* (李新碗). The Analysis of Angle Resolution of Stress Vector Sensor Based on Optical Fiber Sensing Cable for High Speed Railway Traffic[J]. sa, 2018, 23(1): 61-65.

参考文献

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The Analysis of Angle Resolution of Stress Vector Sensor Based on Optical Fiber Sensing Cable for High Speed Railway Traffic

The Analysis of Angle Resolution of Stress Vector Sensor Based on Optical Fiber Sensing Cable for High Speed Railway Traffic

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