基于ModBus通信协议的暖通空调智能控制系统设计

Design of HVAC intelligent control system based on Modbus communication protocol

面对暖通空调功率损耗量大,系统控制效率低等问题,设计一种基于ModBus通信协议的暖通空调智能控制系统。通过设备层采集暖通空调的信号,并传输至PCL控制层,通过模糊自适应PID控制器对接收的暖通空调信号实施运算后,调节变频器实时控制暖通空调。将调节后的暖通空调信号,通过通信层的ModBus通信协议实施网络集成与数据交换,经PLC与上位机远程监控实现暖通空调智能控制。结果表明,基于ModBus通信协议的暖通空调智能控制系统适用性高、实时性强,数据传输效率高且稳定,可实现暖通空调智能控制。

Faced with the problems of large HVAC power loss and low system control efficiency,a HVAC intelligent control system based on ModBus communication protocol was designed.The HVAC signal are collected through the equipment layer and transmitted to the PCL control layer.The fuzzy adaptive PID controller calculates the received HVAC signals,and then adjusts the frequency converter to control the HVAC in real time.The adjusted HVAC signal realize network integration and data exchange through ModBus communication protocol in the communication layer,and the intelligent control of HVAC is realized through the remote monitoring of the PLC and the host computer.The results show that the intelligent control system of HVAC based on ModBus communication protocol has strong applicability,real-time,high data transmission efficiency and stability,and can realize intelligent control of HVAC.