What does the front and rear parking radar of a car mean?

[Margie]

The front and rear parking radar of a car refers to a safety assistance device used during reversing or parking, consisting of ultrasonic sensors, a controller, and a display unit. The functions of the parking radar are: 1. To detect obstacles in front of or behind the car when parking or driving at low speeds, providing information on the distance, direction, and area of the obstacles, and issuing timely warnings; 2. To assist drivers in parking, driving at low speeds, or following other vehicles in congested traffic, helping to reduce collisions and scrapes caused by poor visibility when moving forward. The working principle of the parking radar is: It uses ultrasonic distance measurement, where the controller directs the sensors to emit ultrasonic signals. When these signals encounter an obstacle, they generate echo signals. The sensors receive the echo signals, which are then calculated, processed, and analyzed by the controller's CPU. The display unit shows the distance, direction, and area of the nearest obstacle, and the buzzer emits corresponding warning sounds as needed.