Principle of Car Reverse Anti-Collision Device?
3 Answers
Car reverse anti-collision device works by adding a servo with braking function on the basis of ordinary reverse radar. When the car enters the danger zone from the warning zone, the controller can send a control signal to the braking servo, which immediately starts to automatically control the car to stop reversing, achieving the purpose of safe reversing. The following is an extended introduction: 1. Obtain target coordinates: When the radar is working, the timer triggers the modulator, which generates modulation pulses, causing the oscillator to generate high-power pulse signals that radiate electromagnetic waves into space through the antenna. Under the control of the antenna system, the antenna beam scans the space in a prescribed manner. If the electromagnetic wave encounters a target, the echo signal reflected by the target is received by the antenna and sent to the receiver. After signal processing, it is finally sent to the terminal equipment to obtain the working principle of the target coordinates. 2. Avoid collision: The reverse automatic anti-collision system is part of the intelligent car and is an intelligent device to prevent collision when the car is reversing. It can automatically detect vehicles, pedestrians or other obstacles that may collide with the car, and issue an alarm or take measures such as braking or avoiding to prevent the collision.
I think the reverse collision avoidance system is quite amazing, but its working principle is actually very simple. It mainly relies on ultrasonic sensors to detect obstacles. The sensors are installed at the rear of the car and continuously emit high-frequency sound waves. If these sound waves hit a wall, pillar, or other obstacles behind the car, they will be reflected back. The receiver in the device captures the echoes and calculates the distance based on the time it takes for the sound waves to travel back and forth—the shorter the time, the closer the distance. Once the system detects that the car is too close to an obstacle, it will emit a beeping alarm, sometimes accompanied by a real-time distance display or image on the in-car screen. This has helped me avoid many reverse collisions, especially at night or in low-light conditions where it compensates for limited visibility. However, it's important to keep the sensors clean and free from mud or snow, as blockage may cause false alarms. Overall, this design is reliable and practical, making it a must-have safety feature for modern cars. I believe anyone can benefit from it.
When it comes to the principle of reverse parking sensors, I have the most say because I use them all the time while driving. The basic idea of this gadget is to use sensors to 'see' obstacles behind the car, with ultrasonic types being the most common. They emit silent wave signals that bounce back when hitting objects, and the system calculates the time to determine the distance. When you get too close, the alarm keeps beeping to remind you to stop. Some car models are equipped with cameras that directly display high-definition images on the screen, making it clear at a glance. It has made parking in my neighborhood much easier for me; I used to worry about hitting trash bins, but now I'm completely at ease. When installing, remember to go to a reputable shop to avoid damaging the original wiring. Also, performance may be less effective in rainy or cold weather, so make sure to wipe the sensors frequently. Overall, it makes reversing simpler and safer, and both beginners and experienced drivers should give it a try.
