Structure principle of automatic parking

The automatic parking system can make the car park in the right parking space automatically. The system includes environmental data acquisition system, central processing unit and vehicle strategy control system. The environmental data acquisition system includes an image acquisition system and a vehicle-mounted distance detection system, which can collect the image data and distance data of surrounding objects from the vehicle body and transmit them to the central processor through the data line. The central processor can analyze and process the collected data, get the current position, target position and surrounding environment parameters of the car, make an automatic parking strategy according to the above parameters, and convert it into an electrical signal; After receiving the electric signal, the vehicle strategy control system controls the angle, direction and power support of the vehicle according to the instruction.

Principle: The radar probe around the vehicle measures the distance and angle between itself and the surrounding objects, and then calculates the operation process through the on-board computer, and adjusts the rotation of the steering wheel with the vehicle speed. The driver only needs to control the speed. In the next few years, more and more high-end imported cars will list this configuration as standard, even on domestic cars, so don't be surprised, because this system is not complicated.

Operating conditions of automatic parking system

The system must be active.

The length of the parking space should be greater than 1.2m or more of the car body.

The distance between vehicles and vehicles in other parking spaces should be 0.5-1.5m..

ESP could not be shut down.

When reversing, the driver's torque on the steering wheel is less than 5Nm (basically equal to not touching the steering wheel).

When the reverse gear is engaged, if the reverse gear is not carried out or completed within a certain period of time (usually 3 minutes), the system will automatically cancel the parking function.

When leaves, garbage or snow cover the kerb, it may be difficult for the parking steering assist system to identify the kerb. In addition, leaves and snow will also cause serious scattering when reflecting ultrasonic signals, so that the system receives weak ultrasonic echoes, which may lead to errors.

When it is close to the entrance of the courtyard with the closed gate, the system can regard it as an ideal parking space.

If there is a traffic warning post with a small size on the vacant space, the system may not recognize the vacant space and regard it as a valid parking space. Decreasing the speed of the vehicle is helpful to improve the possibility of the system identifying small and medium-sized items in the free space.