Design And Experiment Of Sowing Control And Seeding Performance Monitoring System For Seeder

With the progress of economic and social development level,China’s agricultural modernization level has been improved,from the traditional rugged,inefficient agriculture to modern precision and efficient agricultural development.Accurate and efficient agriculture is a new type of agriculture that is deeply integrated with technologies such as communication,networking,biology and agriculture.The precision sowing machine sowing control system and the seeding performance monitoring system can improve the control precision of sowing,improve the quality of sowing,timely the abnormal situation in the sowing process,and save the labor force and reduce the production cost.In the modern precision agriculture The development process has far-reaching strategic significance.Most of the current domestic sowing machine adopts the mechanical driving method of the geogrid drive seeding mechanism,which leads to the problem that the work is easy to slip when there is stubble coverage or high water content surface,which leads to uneven spacing,And the domestic use of mechanical sowing machine is usually used to manually adjust the drive transmission ratio to achieve the purpose of regulating the spacing of seeding,this way not only to adjust the trouble,and can not achieve the purpose of stepless adjustment.In addition,because the sowing machine operation process in a relatively closed state,only the human eye is difficult to directly observe the specific seeding conditions,in the event of missing,replay phenomenon will seriously affect crop yield.In view of the above problems,this research group based on the existing research,the use of infrared sensor technology,single chip technology,PID control technology combined method,the precision sowing machine broadcast control system and seed performance monitoring system.The specific research contents and research results are as follows:(1)the traditional planter to optimize the transformation of institutions:the combination of agricultural machinery to promote the "one machine multi-purpose,composite operation" concept,modified in Jiangsu Province Danyang City Xintian Agricultural Machinery Co.,Ltd.production 2BXF-12A rotary tillage Trenching sowing one machine,in the retention of the machinery sowing,rotary tillage,full pressure,ditch function on the basis of the focus on the sowing machine drive mode was modified.The driving mode of the seeding machine is changed from the original mechanical chain drive to the DC motor to realize the matching of the rotation speed of the row and the speed of the seeder and realize the rotation speed of the row of the pole.On this basis,all sub-tubes are equipped with seeding performance monitoring system.(2)Construction of precision sowing machine sowing control system:The control system is the core of precision sowing of the sowing machine.It mainly completes the stepless control of the vehicle sensor signal acquisition and the chopping shaft speed.The system consists of the main control mechanism,sowing adjustment actuator,digital tube display mechanism and vehicle signal acquisition mechanism composed of four parts.According to the concept of distributed system design,the main function modules of the system are encapsulated into independent functional units and constructed into a distributed control system which is easy to expand.The software design of the system adopts the modular programming idea,which mainly includes the main program,the information acquisition subroutine,the driving subroutine,the display subroutine and the PID control algorithm subroutine.(3)precision seeding machine seeding performance monitoring system to build:monitoring system mainly includes signal acquisition module,the main control module,interface display and sound and light alarm four parts.The system uses infrared sensor as the signal acquisition side,using STM32F103 series MCU as the control core.If there is a missed broadcast or replay fault during sowing,the LED lights corresponding to the sowing channel number will be lit and the channel number will be displayed on the digital tube to remind the driver to take measures in time to reduce the loss of agriculture.(4)The test of the sowing control system and the seeding performance monitoring system of the precision sowing machine is carried out.The test results show that the control system can adjust the rotation speed of the row axis in real time according to the traveling speed of the machine,and the actual speed and target speed The error is small,the control precision is high,the response speed is quick,the indexes conform to the precision seeding industry standard.Monitoring system for a single seeded crops,through a large number of tests show that the monitoring accuracy is high,stable work.