联合收割机脱粒状态监测及故障诊断系统设计OA

Aiming at the problem that the working status of the key device of combine harvester is difficult to monitor un-der the harsh and variable working conditions.At the same time,the system failure can not be eliminated in time.Com-bine harvester status monitoring and fault diagnosis system was designed.In this paper,we used the data acquisition sys-tem to obtain the working parameters of combine harvester(including temperature,speed and vibration parameters)and realized the docking of data and mobile phone client through the cloud communication module.The operator can use the Android client to obtain the real-time operating status of combine harvester.The early warning and alarm of the fault can be realized by setting the relevant threshold.The test results showed that the combination of WIFI wireless communication technology,the RS485 wireless communication technology and the socket method can realize the data communication be-tween the Android client and the server.The monitored graphs and data of temperature,rotation speed,vibration speed and vibration amplitude can be dynamically updated in real time.The monitored data delay is 100ms,which meets the monitoring requirements.When the combine harvester is operating in the field,the fault diagnosis method based on the in-stantaneous change trend of the target signal can accurately discover the fault early warning and alarm functions.