摘要
为了提高大型粮仓环境参数监测的可靠性和传输距离,设计了基于CAN总线的温度、湿度监控系统,该系统采用上位机和下位机结构。为此,详细介绍了上位PC机EPP并口协议的CAN通信接口硬件电路和软件设计,下位机以单片机为核心,完成了单片机与CAN总线接口和温湿度数据采集电路的设计。实践证明,该系统具有良好的扩展性、可靠性以及广泛的利用价值。
In order to improve the reliability and transmit distance of the grain store monitoring system, the monitoring system based on the CAN bus is designed. The system adopts the distributed network architecture, which is composed of host and slave computers. The CAN interface circuit and software based on EPP parallel protocol is designed in the host machine in detail. The slave computer which takes MCU as the core completes the design of the CAN interface and the temperature and humidity sensor circuits. Practice has proved that this system has good stability, reliability and extensive application value.
出处
《农机化研究》
北大核心
2009年第11期159-161,共3页
Journal of Agricultural Mechanization Research
关键词
CAN总线
温度
湿度
监控
CAN bus
temperature
humidity
monitoring system
