"基于AT89C51单片机的超声波距离测量系统设计及应用"

This thesis presents a detailed design of a pulse-reflection double-ultrasonic sensor distance measurement system based on the AT89C51 microcontroller. The specific content includes the hardware design of the distance measurement unit and the application program design for the microcontroller. The system is designed to measure the distance by utilizing the time difference between the transmission of ultrasonic waves and the reflection of the echoes, with the speed of sound in air as the determining factor. The ultrasonic distance measurement system is based on two sets of Polaroid 6500 series ultrasonic sensors and their drive modules. It incorporates an AT89C51 microcontroller-based ultrasonic distance measurement circuit, which can achieve multi-mode distance measurement, temperature compensation, distance result display, and serial communication for transmitting processed distance data signals to a PC and receiving control signals from the PC. This system is easy to install and use, cost-effective, and can be combined with telemetry and remote control systems, offering broad application prospects. The key words for this system include ultrasonic, ultrasonic sensor, ultrasonic distance measurement system, AT89C51 microcontroller, and temperature compensation. In summary, the design of this ultrasonic distance measurement system provides a practical and efficient solution for distance measurement applications. Its use of advanced technology and cost-effective components make it a valuable tool for various industries and fields. The system's ability to interface with PC systems further enhances its usability and flexibility, making it a versatile choice for distance measurement needs.