介绍了型砂性能智能测控系统的设计原理和工作原理，研制的测控系统是由ＰＣ工业控制计算机、ＰＬＣ可编程序控制器和取样、测试型砂性能机构及执行机构等组成，主要测定湿型砂紧实率和湿压强度及型砂温度、环境温度和湿度等参数，控制混砂加水量。生产应用表明，使用该系统可以将型砂的紧实率波动范围控制在±３％的范围以内，使型砂质量稳定，应用效果良好 The design principle and working principle of the intelligent measurement and control system for sand performance are introduced. The measurement and control system developed is composed of PC industrial control computer, PLC programmable logic controller, sampling and testing sand performance mechanism and executing agency. Rate and wet compressive strength and sand temperature, ambient temperature and humidity and other parameters, control of sand mixed with water. Production applications show that the system can be used to sand tightness rate of fluctuation range of ± 3% within the control of the sand quality and stability, the application of good results