本文介绍了用于 LH48空调机组的 QAC—48单片控制机的硬件、软件及应用结果。分析比较表明:改用单片控制机后,硬件价格基本相同,但控制精度、智能化程度都大大提高,由于其元器件个数很少且无机械性部件,故可靠程度也大有提高。利用单片计算机构成智能化仪表取代空调用常规仪表已是很现实和必要的了。 This article describes the hardware, software, and application results of the QAC-48 monolithic controller for the LH48 air conditioning unit. Analysis and comparison show that: after switching to a single-chip controller, the hardware price is basically the same, but the control accuracy and intelligence are greatly improved. Due to the small number of components and no mechanical components, the reliability is also greatly improved. It is very realistic and necessary to use a single-chip computer to form intelligent meters instead of conventional air-conditioning meters.