基于433MHz频段的无线粮情监控系统的设计与实现

In the process of grain storage, tempreture and humidity in granary are important indicators of the quality of grain storage.Dynamic monitoring and control of temperature and humidity inside the granary is of great importance to the safety of grain storage process. Granary monitoring system is a system that is able to detect,analyse and control the physical condition and other factors of the grain within granary by using modern computer and electronic techonlogy.This paper designed and implemented a granary monitoring system based on 433MHz band wireless sensor network , all the system works in a low power consumption mode and communicates with protocol specifically designed for this system. This network responds the command of PC by transmitting data of both temperature and humidity back to PC through radio wave, the system features low cost and high reliability which makes it a desirable substitution for granary monitoring system currently being used