超声波测距系统 原理图的设计方案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 -The schematic design of ultrasonic distance measurement system described in a microcontroller as the core, integrated circuits, temperature sensors and other integrated components of the ultrasonic ranging system by infrared remote control signal receiver. The system by the temperature sensor to measure ambient temperature, to come to the propagation velocity of sound in the air in the temperature, reflected back from launch through an obstacle based on the ultrasonic propagation time of the receiving end, calculate the test distance