Ultrasonic range finder used for new energy automobile backing system

Abstract

The invention relates to an ultrasonic range finder for a new energy vehicle reversing system, which includes a main body, an insertion rod and a probe. A detection mechanism is provided in the main body, and the detection mechanism includes a bottom plate, a fixed block, a pole, a first steering mechanism, Support rods, pallets and a second steering mechanism, the first steering mechanism includes a first drive motor, a first drive shaft, sleeves, connection blocks, connecting rods, slip rings and a support frame, and the second steering mechanism includes a fixed Shaft, collar and two steering units. The ultrasonic rangefinder used in the new energy vehicle reversing system uses the first steering mechanism to adjust the angle between the probe and the horizontal direction, so that the equipment can detect the distance of obstacles at different heights. Not only that, the azimuth angle of the insertion rod is adjusted by the second steering mechanism to realize the distance detection of obstacles in all directions at the same height, so that the driver can fully understand the distance range between the rear of the car and the obstacle when reversing, and Make appropriate adjustments for safe reversing.

Description

technical field [0001] The invention relates to the field of new energy vehicles, in particular to an ultrasonic range finder used in the reversing system of the new energy vehicle. Background technique [0002] With the development of science and technology, the application of ultrasonic sensors in distance measurement is becoming more and more popular, especially in modern times when new energy vehicles are gradually popularized. Collisions between obstacles. [0003] The principle of ultrasonic distance measurement is to use the known propagation speed of ultrasonic waves in the air to measure the time it takes for the sound waves to encounter obstacles and reflect back after they are emitted, and to calculate the actual distance from the emission point to the obstacle based on the time difference between emission and reception. Since the position of the probe on the ultrasonic rangefinder is fixed, when the car is reversing, the actual distance detected is the distance ...

AI Technical Summary

Problems solved by technology

Since the position of the probe on the ultrasonic rangefinder is fixed, when the car is reversing, the actual distance detected is the distance between points. In the actual reversing process, the driver needs to know the rear of the car and the obstacles in time. In this way, the collision between the car and the obstacle can be completely avoided when reversing. For this reason, multiple ultrasonic rangefinders will be installed at the rear of some cars, but this approach will not only increase the cost, but also increase the cost when the obstacle When the gap or opening is facing the ultrasonic rangefinder, the device will misjudge the distance between the car and the obstacle, resulting in a collision accident when reversing

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