CAN总线在VRV变频空调系统中应用

Application of can bus to VRV variable-frequency air-conditioning system

提出用CAN总线技术实现VRV空调系统中室内机与室外机之间通信的设计方案。在分析CAN总线技术特点和VRV空调系统通信要求的基础上,确定通信结构和通信对象模型,给出VRV空调系统拓扑结构、CAN通信硬件方案和软件设计思想。经试验调试证明,利用CAN总线技术能有效地解决VRV空调系统中室内机与室外机之间的通信问题。

This paper proposes a design scheme that CAN Bus is used to communicate between the indoor controllers and the outdoor controller of VRV air-conditioning system. On the basis of analyzing the technical characteristics of CAN bus and the communication requirements of VRV (Variable Refrigerant Volume) air-conditioning system, the communication structure and the communication object model are concluded, and the topology structure of VRV air-conditioning, hardware scheme and software design idea of CAN communication are shown. The debugging experiment proves that CAN bus is able to effectively resolve the communication problem among the indoor controllers and the outdoor controller of VRV air-conditioning system.