随着超声技术的不断发展,超声的应用越来越广泛。在传感和测量领域,由于超声测量具有精度高、非接触、低损耗、迟滞小、成本低等诸多优点,在工业和日常生活领域都得到了广泛应用。本文介绍一种超声脉冲回波测距方式,并基于AT89S52单片机设计一款超声测距传感器。利用单片机的软硬件资源,实现超声波的发射与接收控制。 With the continuous development of ultrasound technology, the application of ultrasound is more and more widely. In the field of sensing and measurement, ultrasonic measurement has been widely used in industry and daily life due to its advantages of high precision, non-contact, low loss, small hysteresis and low cost. This article describes an ultrasonic pulse echo ranging method, and based on the AT89S52 microcontroller design an ultrasonic distance sensor. The use of single-chip hardware and software resources to achieve ultrasonic launch and receive control.