| The existing monitoring instrumentation system in the cab of domestic combine harvesters only supports the display of parameters such as engine speed,battery power,water temperature,fuel volume and oil volume.During the field harvesting operation,the driving speed of the combine harvester,the speed and torque of each working part are adjusted according to the driver’s experience,and the feeding amount is too large or too small,which will lead to the blockage or even damage of the working parts of the combine harvester;if the feeding amount is too small,the operation efficiency is too low and the best operation condition is not achieved,both of which affect the harvesting quality.In view of the above problems,this project designs and develops a set of intelligent monitoring system for operating parameters of combine harvester,including three sub-systems: detection and sensing system,on-board human-computer interaction system and remote monitoring system,which not only realizes the speed of cutter input shaft,cutter auger churn,threshing wheel,threshing drum,engine power output shaft,torque of cutter input shaft and detaching drum shaft,driving speed,harvesting distance and harvesting area,but also displays the operating parameters of combine harvester in the terminal of cab.The operating parameters are displayed in real time in the cab display terminal,which makes it easy for the driver to understand the operating status of the harvester in time to ensure the harvesting quality,and the data is uploaded to the cloud server in real time and displayed in real time through the monitoring webpage,which makes it easy for agricultural operation managers and others to monitor the implements in time during the harvesting season and dispatch the remote operations in different places,while saving the historical data of the operating parameters to the database,and further analyzing the data by doing further analysis.It can realize the statistics of operation area,analysis and diagnosis of machine failure and targeted post-maintenance etc.The main contents are as follows:(1)Based on the working process and common failures of each component of the combine harvester,the monitoring system is analyzed for functional requirements,data requirements and performance requirements,and the overall scheme of the monitoring system is designed,including three parts: on-board detection sensing system,human-machine interaction system and remote monitoring system.(2)With the objective of obtaining operational parameters such as driving speed,rotational speed and torque of key components of the combine harvester,as well as operational information such as harvesting distance and harvesting area,the detection sensing elements were selected and designed,the detection method was determined,and the test calibration was conducted.(3)Based on C language and LVGL library,we developed an on-board human-computer interaction system,including login interface,parameter input interface,and real-time monitoring interface,which can realize real-time monitoring of combine harvester operation parameters and operation status from the driver’s cab.(4)Based on Springboot+Vue framework,a remote monitoring system is developed.The operating parameters of the combine harvester are uploaded to the cloud server and displayed to the monitoring webpage in real time to realize remote online monitoring of data and storage and query of operating data.(5)On the basis of the above research,the system was integrated into a domestic type of combine harvester to carry out field trials and complete the system functional test and performance test.The test results show that: the system function modules operate normally,the interaction response is timely,the data transmission is good in real time,the system continues to run stably,and has practical value. |
