This paper bases on the requirement in the refrigeration engineering experiment, then puts forward a basket of design on static and dynamic data acquisition and a computer measure control system of an equipment automatic control, and designs the drive electrocircuit of electron expansion valve. 本文根据制冷工程实验中的需要,提出了一套静、动态数据采集和设备自动控制的微机测控系统的组建方案,并设计了电子膨胀阀的一种驱动电路。