Design of Distributed Greenhouse Big Awning Monitoring System Based on Field-bus

In this paper, a kind of automatic monitor and control system of temperature and humidity parameter in greenhouse big awning based on CAN bus communication network and TMS320F2812 is designed, hardware architecture of CAN intelligence node and data acquisition system and software design are introduced. This node completed the real time measuring, long-range transmission and control of the temperature and humidity by CAN-bus interface.