基于CAN总线的粮仓测温系统设计

随着现代粮库规模的不断扩大,其测温系统既要求简化现场布线又要远距离传输数据,实现集中监控。为此设计了一种基于CAN总线和DS18B20传感器的粮库测温系统。文章介绍了改测温系统的软硬件设计方案,实现了粮库现场布线的简化和数据的远距离传输。实验证明,该系统很好的适应了粮库测温系统的需求,正负偏差在0.3以内,具有成本低、可靠性高等特点。

Design of GranaryTemperature Measuring System Based on CAN Bus and Its Application

With the continuous expansion of the scale of modern granary, its temperature measurement system requires not only to simplify the field wiring but also to transmit data in a long distance, so as to realize centralized monitoring. A kind of granary temperature measurement system based on CAN bus and DS18B20 sensor is designed. Using the characteristics of CAN bus and DS18B20, the simplification of field wiring and the long distance transmission of data are realized. The design of the software and hardware of the temperature measurement system is introduced in this paper, which realizes the simplification of the field wiring of the granary and the long distance transmission of the data. The experiment shows that the system is well adapted to the demand of the granary temperature measurement system, and has the characteristics of low cost and high reliability.