基于光纤干涉原理的转机监测振动传感器设计  

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

作　　者：刘宗麟 宋继红[1] 刘会杰 衣文索[2] 李东旭 LIU Zonglin;SONG Jihong;LIU Huijie;YI Wensuo;LI Dongxu(College of Electronic Information Engineering,Changchun University,Changchun 130022,China;School of Optoelectronic Engineering,Changchun University of Science and Technology,Changchun 130022,China)

机构地区：[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

出　　处：《吉林大学学报（理学版）》2021年第5期1272-1277,共6页Journal of Jilin University:Science Edition

基　　金：国家自然科学基金(批准号:61805022).

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2680 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.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 2680 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.

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 

分 类 号：TN247[电子电信—物理电子学]