The automatic parking system consists ofthe following components:
1. Ultrasonic sensors: There are 12 intotal, located on the front and rear bumpers. They transmit ultrasonic signals,then receive signals reflected from obstacles, and evaluate the distance fromobstacles based on the length of time from transmission to reception. The frontradar monitoring distance in front of the vehicle bumper is 100cm, and the rearmonitoring distance is 120cm. The left front and right front outer distancesensors are used to detect the length and width of the parking space.
2. Parking Positioning System (PTS) ControlUnit: Located on the left side of the trunk, it mainly has the followingfunctions: reading various electronic component input signals, such as vehiclespeed, gear status, ignition switch status, electric steering machine status,etc. Signals, actuating the distance sensor and warning components, communicatewith the CAN network via the Flex Ray bus.
3. Warning component: The front warningcomponent is integrated in the meter. When the vehicle speed is lower than16km/h, the parking system switches to the measurement mode. The rear warningelement is located above the rear windshield. When the vehicle speed is below16km/h, the warning part lights up to give a visual warning to the driver.
4. Electric power steering mechanism: Itconsists of a rack and pinion steering gear, a torque sensor (A91b1), anelectric motor (A91m1) and a steering mechanism control unit (N68). The N68reads the A91b1 signal and the wheel speed signal from the ESP. According tothis, the A91 m1 is actuated, thereby driving the rack and pinion steeringmachine to realize the steering function.
5. Steering column module control unit:Read steering wheel angle and steering angular speed, and communicate with CANR through Flex Ray bus.
6. Vehicle stability system control unit:with control adaptive braking, braking force distribution (EBD), anti-lockbraking (ABS), starting acceleration anti-skid control (ASR), electronictraction assist (ETS), brake assist ( Functions such as BAS) analyze thesignals transmitted by various sensors (such as wheel speed sensors) and thensend correction commands (correct control commands) to ABS and ASR to help thevehicle maintain dynamic balance so that the vehicle can be maintained undervarious conditions. The best stability. In the case of oversteer or understeer,the stabilizing effect is more pronounced. In the rear-wheel drive car, theover-steering situation often occurs. When the rear wheel is out of control andthe tail is tailed, the ESP will quickly brake the outer front wheel tostabilize the car. (Note: braking at this time will not lock the wheel, aimingto reduce Wheel speed). When understeering, the ESP will quickly brake theinner and rear wheels slightly to correct the direction of travel. 

Radar probes around the vehicle measure thedistance and angle between itself and the surrounding objects, and thencalculate the rotation of the steering wheel with the vehicle speed through theon-board computer. The system comprises an environmental dataacquisition system, a central processing unit and a vehicle policy controlsystem. The environmental data acquisition system comprises an imageacquisition system and a vehicle distance detection system, which can collectimage data and distance data of the surrounding objects from the vehicle body,and transmit the data to the vehicle through the data line. CPU. 

The central processor can analyze andprocess the collected data to obtain the current position, the target positionand the surrounding environmental parameters of the vehicle, and make anautomatic parking strategy based on the above parameters, and convert it into anelectrical signal. After receiving the electric signal, thevehicle strategy control system makes the driving of the car such as angle,direction and the like according to the instruction, until the parking is inplace.

Different automatic parking systems usedifferent methods to detect objects around the car. Some are equipped withsensors around the front and rear bumpers of the car, which can act as both atransmitter and a receiver. These sensors send a signal that is reflected backwhen the signal hits an obstacle around the body. The computer in the car thenuses the time it takes to receive the signal to determine the location of theobstacle. Other systems use a camera or radar mounted on a bumper to detectobstacles. But the end result is the same: the car will detect the parked car,the size of the parking space and the distance from the roadside, and thendrive the car into the parking space.