Aiming at the problem that the operating environment of rail transit equipment is complex and the status of some abnor-mal equipment cannot be accurately monitored,a rail transit equipment condition monitoring system based on vibration signal changes is designed.In the vibration signal acquisition module of the system,a piezoelectric vibration acceleration sensor with model CA-YD-3193 is selected to collect the vibration signals of rail transit equipment,and the collected vibration signals are transmitted to the monitoring service terminal through the on-board monitoring network of rail transit.The monitoring service terminal selects Hilbert transform method to transform the vibration signal and extract the device status characteristics.The sample set was constructed with the results of equipment state feature extraction,and the binary tree was constructed with the samples within the sample set to form an isolated forest.The isolated forest algorithm was used to output the results of rail transit equipment state monitoring.The test results of the system show that the system can monitor the status of signal equipment,rail equipment,fire equipment and other rail transit e-quipment according to the change of equipment vibration signal,and is suitable for the practical application of rail transit equipment operation and maintenance.
关键词
振动信号变化/轨道交通/设备状态/监测系统/Hilbert变换/孤立森林
Key words
vibration signal change/rail transit/equipment status/monitoring system/hilbert transform/isolated forest
维普
万方数据