The Research And Development Of The Grain Instances Measuring-Controlling And Managing System To The Mid-Mini Grain Depots

The safety of the foodstuff is concerned with the safety of our country. At the same time, to make sure of the security of the grain depot is the most and key factors. The grain depot is the primary basically unit of grain with huge and separated area. Nowadays, because of the technical and bankroll factors, the domestic grain depots especially some middle and small scale ones, could only be measured the temperature on the spot by a manual way. There will be a large number of damage when the paranormal temperature and humidity can not be discovered and settled in time. So, it becomes so important and imperious to develop a measuring and controlling system of grain circumstances for those middle and small grain depots, On the basis of the realization of the measuring and controlling system of grain circumstances for those middle and small grain depots, the main problems faced presently will be overcame in a better way.The passage has analyzed those problems lied in grain storage for those middle and small depots firstly. It's also indicated the significant factor for the realization of the measuring and controlling system of grain circumstances for those middle and small grain depots. Then it's chosen the data communication project, which is breasted of the realistic of the middle and mini depots, and development technology and tools taken apart used widely, mature and reliable, preponderate in comparing with the capability and the price on the basis of the analyzing and comparing. It's also examined the feasibility with the help of the survey and study. The third part, in a structure analyzing systemically approach, it' s built the logical model of the system using the software pattern tools VISIO and make sure of the protocol of data communication between the measuring-controlling subsystem and management subsystem. At last, in a structure analyzing systemically approach, it's designed systemically and mainly the hardware makeup frame of measuring and controlling subsystem. It's set up a software module structure of the system with the help of the VISIO. It's also built up an ER module of the system and a physical design of the database on the basis of the database pattern tools ERWIN.