"超声波测距系统的硬件设计及应用"

The document "The Hardware Design of Ultrasonic Ranging System" discusses the design of an ultrasonic range finder system with a measuring accuracy of 1cm, suitable for applications such as car reversing, construction site positioning, industrial monitoring, and measuring liquid level, well depth, and pipeline length. The hardware circuit modules of the ultrasonic range finder system include the ultrasonic transmission circuit, ultrasonic reception circuit, display circuit, temperature compensation circuit, and sound and light alarm circuit. The reception circuit uses CX20106A, the transmission circuit uses inverter 74HC04 and ultrasonic transducer, and a temperature compensation device DS18B20 is added to improve measurement accuracy. The design was verified to be feasible through physical experiments. Keywords: STC89C52, ultrasonic ranging, 74HC04, CX20106A, temperature compensation.