The Design And Realization Of The Automatic Control System Of Greenhouse Environmental Parameters Based On ARM11

With the development of economy and society,people put forward higher requirements for the development and progress of agriculture and the high-quality supply of agricultural products.Greenhouse technology of facility agriculture is one of the effective ways to achieve the new requirements of the new era.Greenhouse technology can increase the output of agricultural products,improve the quality of agricultural products,guarantee the supply of agricultural products in different seasons,and ease the situation of land resource shortage.Based on the requirements of the times and the characteristics of greenhouse technology,this paper proposes the design and implementation of the greenhouse environmental parameters automatic regulation system based on arm.First of all,the development status and existing problems of greenhouse technology at home and abroad are reviewed.The mainstream technologies and their characteristics of greenhouse technology developed countries are introduced,and the representative achievements of domestic experts with different technology platforms are introduced.Secondly,it introduces the development platform ok6410 development board and the technology and tools needed for the system design and implementation.The S3C6410 chip of Samsung is used as the control system processor,and the RS485 bus technology is used to build the intelligent sensor network of the system front-end sensor transmission module.Thirdly,the relationship among environmental parameters,executive mechanism and human intervention in greenhouse is analyzed,and the overall framework and components of the system are designed.In the aspect of hardware design and implementation,in addition to the resources of ok6410 development platform,the key circuit is also designed,the specific product performance of sensor transmitter and actuator is introduced,and the electronic drive circuit,electrical control circuit and actuator of intelligent sensor transmission network and actuator module are designed.In the aspect of system software design and implementation,the flow chart of system,key and display is designed.On the basis of making full use of the resources of the development platform,the program source code is developed in C language,and the function program of key,display,control,buzzer and other modules is compiled.Finally,after the hardware installation,wiring and software programming,the system has beep warning function under the setting conditions,emergency protection function under the extreme environmental conditions,multi environmental parameter acquisition and measurement function on the mounting bus of multi-sensor transmitter,adjustment function of quick response command of each executive device,friendly human-computer interaction function supported by key and display device And basically achieve the expected goal of the system.