High-Precision Monitoring and Controlling System of Temperature and Humidity Based on CAN Bus

The design principles and implementation of a high-precision temperature and humidity’s monitoring and controlling system is introduced in this paper. The data acquisition and transmission of temperature and humidity node in distributed network is realized by the effective use of high-precision temperature and humidity sensor and CAN-bus. Then the principle experiments are carried out, which indicates that the system overcomes the shortcomings of the traditional temperature and humidity monitoring system, such like low transmission rate and poor real-time service, improve the accuracy of the system acquisition and meets increasingly stringent project monitoring and control applications.