Research And Realization On The Key Technology Of Monitoring System About Granary Environment Based On ARM9

After storing merchandise into warehouse, we usually detect the environmentalconditions continuously to make the merchandise keep a good status. With thedevelopment of information technology, especially the development of sensortechnology and the Internet of things technology, It is increasing significant forstored-grain to detect the environmental humidity and temperature by the sensornetworks, which can improve the efficiency of management of grain storage and thelevel of information, prevent the decline in the quality of stored grain and pest.In this master’s thesis, according to the granary environmental managementinformation needs, the deficiencies in both data acquisition and management ofexisting granary management system and the analysis of the key technologies ofembedded systems of grain warehouse data and information management system,designing a new warehouse data acquisition and information management system,which is combined ARM9embedded system and Linux system.Our research worksrealize a monitoring system on line for enviromental status information.We discussed the methods for realization of hardware and software of the system.we first constructed a hardware platform using ARM9microprocessor as core, andreplace the conventional method that taking SCM as core, thus strengthen themeasuring functions and increase the compatibility.Then we setup the running environment for software that the arm system needs,and designed the driver and application program according to the requirements in thedistribution and interaction aspectst. In the system, we realized a B ootloadertransplant, Linux core transplant, setup of file system, ther press and temperaturesensor driver and the application based on the above. In order to use the syst em, wealse embeded a Web server and designed a CGI program that make users operateremotely.At last, we gave some experimental results and do an analyses for thedisadvantages of the system, and on the basis, we concluded the monitoring systemreaches the expection.