一拖多变频空调产品测试系统与室外机通信接口的研究

Study on Communication Interface between the Product Test System and Outdoor Unit for Multi-Split Variable Frequency Air conditioner

首先介绍了空调器室外机产品测试系统的基本功能和组成结构,分析了空调器室内机与室外机控制接口的特点。其次,针对一拖多变频空调器室外机产品测试系统的需求,研制了以UART扩展芯片GM8142和单片机为核心的SCI智能模块。最后,进一步阐述了该智能模块的硬件设计和软件结构。工程应用表明:SCI智能模块不但增强了空调器室外机产品测试系统的适用性,而且提高了系统的可扩展性和通用性。

Firstly,the basic function and structure of product test system in outdoor unit of air conditioner is presented.The characteristics of control interface between indoor unit and outdoor unit of air conditioner are analyzed.Then,the SCI intelligent module based on the quad UART chip GM8142 and Microcontroller is designed and realized,which is aiming at the product test system for the multi-split variable frequency air conditioner.Finally,the hardware design and software architecture of the SCI module are illustrated.It is shown that the SCI intelligent module not only enhances the applicability of product test system for outdoor unit of air conditioner,but also improves its expandability and universality.