基于光纤光栅传感技术,设计了一种机电设备振动在线监测系统.通过测试,光纤光栅振动传感器具有较好的频响和重复性.将该系统应用于汽轮机的振动检测,实现了对设备状态的实时在线监测.该系统与标准加速度传感器及手持式速度仪进行了现场对比实验,测量结果基本一致.现场长时间监测应用结果表明,该系统具有较高的精度和稳定性.
We design an online monitoring system for mechanical and electrical equipment based on fiber Bragg grating sensing technology. Test results show that it has better frequency response and repeatability. We apply the system to the vibration monitoring for a turbine and implement real-time and online status monitoring for an electrical and mechanical equipment. Its detection result is basically identical to those of a standard acceleration sensor and a handset speedometer. Long-term application shows that it has higher accuracy and stability.