2010•Anhui nongye kexueRequires access
Application of CAN Bus in Multipoint Temperature Monitoring System of Greenhouse
Liang Chun-ying
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Abstract
On the basis of microcontroller unit(MCU)realizing a traditional temperature measurement,the greenhouse temperature monitoring system based on CAN bus was proposed.Taking AT89C52 MCU as the core,CAN bus technology and digital temperature sensor DS18B20 were used to set up a node and network structure of the temperature measurement system for greenhouse,and the overall structure of the system and key software flow were given.The system can realize real-time detection of greenhouse temperature and can alert in unusual situation,so as to achieve effective monitoring of the greenhouse temperature.The system has advantages of a simple structure,good real-time performance and high reliability.