基于光纤干涉原理的转机监测振动传感器设计

吉林大学学报(理学版) ›› 2021, Vol. 59 ›› Issue (5): 1272-1277.

基于光纤干涉原理的转机监测振动传感器设计

刘宗麟¹, 宋继红¹, 刘会杰¹, 衣文索², 李东旭²

1. 长春大学电子信息工程学院, 长春 130022； 2. 长春理工大学光电工程学院, 长春 130022

收稿日期:2019-08-16 出版日期:2021-09-26 发布日期:2021-09-26
通讯作者: 宋继红 E-mail:reallysong@126.com

Vibration Sensor Design for Rotor Monitoring Based on Optical Fiber Interference Principle

LIU Zonglin¹, SONG Jihong¹, LIU Huijie¹, YI Wensuo², LI Dongxu²

1. College of Electronic Information Engineering, Changchun University, Changchun 130022, China；
2. School of Optoelectronic Engineering, Changchun University of Science and Technology, Changchun 130022, China

Received:2019-08-16 Online:2021-09-26 Published:2021-09-26

摘要/Abstract

摘要： 为解决风机、电力系统等大型转机设备非正常运行导致危害等问题, 设计基于Mach-Zehnder干涉仪组成的光纤振动实时监测系统. 首先, 由两个3 dB耦合器构成干涉仪, 以增加传感器的灵敏度和稳定性；其次, 利用由Mach-Zehnder干涉仪组成的光纤振动传感器对转机实时振动数据进行采集, 并由信号处理单元分析采集到的振动信息; 最后, 用额定转速为2 680 r/min、额定功率为2.8 kW的小型转机进行实验, 分别对比转机在正常和故障情况下的振动信息. 结果表明, 该系统对转机的运行状态监测效果较好.

关键词: 光纤干涉技术, Mach-Zehnder干涉仪, 3 dB耦合器, 灵敏度, 实时监测

Abstract: In order to solve the problems of hazards caused by abnormal operation of large-scale rotating equipment such as wind turbines and power systems, we designed an optical fiber vibration real-time monitoring system based on Mach-Zehnder interferometer. Firstly, the interferometer was composed of two 3 dB couplers to increase the sensitivity and stability of the sensor. Secondly, the optical fiber vibration sensor composed of Mach-Zehnder interferometer was used to collect the real-time vibration data of the rotor, and the signal processing unit was used to analyze the collected vibration information. Finally, experiments were tested on a small-scale rotor will rated speed of 2 680 r/min and rated power of 2.8 kW to complete the vibration information of the rotor under normal and fault conditions respectively. The results show that the system has a good monitoring effect on the oprating state of the rotor.

Key words: optical fiber , interferometry technology, Mach-Zehnder interferometer, 3 dB coupler, sensitivity, real-time monitoring

中图分类号:

TN247

刘宗麟, 宋继红, 刘会杰, 衣文索, 李东旭. 基于光纤干涉原理的转机监测振动传感器设计[J]. 吉林大学学报(理学版), 2021, 59(5): 1272-1277.

LIU Zonglin, SONG Jihong, LIU Huijie, YI Wensuo, LI Dongxu. Vibration Sensor Design for Rotor Monitoring Based on Optical Fiber Interference Principle[J]. Journal of Jilin University Science Edition, 2021, 59(5): 1272-1277.

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