At present, it is difficult to grasp the distance behind the vehicle when reversing vehicles, especially ultra-long and ultra-high vehicles, and there are some potential safety hazards. In order to solve this potential safety hazard and enable vehicles to park in garage more quickly and accurately, this paper designs and implements an ultrasonic ranging and parking positioning auxiliary device based on STC89C52 microcontroller. Main work: First, the overall scheme design of the device is completed. Then, the hardware circuit design and software design of the device are completed, and the hardware circuit composition, software design thinking and working principle are elaborated. Finally, through continuous testing, a large amount of data is collected and the applicable distance range and reliability of the device are analyzed. The test results show that the device can be applied to the auxiliary positioning of large vehicles with good operability and positioning accuracy, and can satisfy the requirement of reversing the vehicle into the garage.
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