一些传统的距离测量方式在某些特殊场合存在不可克服的缺陷，利用超声波测量距离可以解决这些问题。基于此，本文叙述了一种以单片机为核心，由红外遥控信号接收集成电路、温度传感器等集成元件组成的超声波测距系统。该系统通过温度传感器测量环境温度，得出该温度下声波在空气中的传播速度，根据超声波从发射到遇到障碍物反射回到接收端的传播时间，计算出待测距离。通过对系统的调试和测试，所得结果达到设计要求。结果表明，本系统具有成本低，精度高，工作可靠，易于实现等优点。-As some of the traditional method of distance measurement insuperable flaw in some special occasions, the use of ultrasonic distance measurement can resolve these issues. Based on this, this article describes a ultrasonic distance measurement system which is compose of a single-chip processor as the core, by infrared remote control signal receiver integrated circuit, temperature sensors, and other integration.By temperature sensor to measure the ambient temperature of the system, this system concluded the temperature speed of propagation of sound waves in air, based on the ultrasonic reflection from launch to encounter obstacles to the receiving end of time, to calculate the test distance.The system debug and the results of test meet the design requirements. Results showed that this system has a low cost, high precision, reliable, easy to implement and so on advantages.