What is AEB?

How does the car stop when the driver doesn’t notice the pedestrians in front and doesn’t take braking measures?

The moment of Revelation
With the continuous development of intelligent driving technology, now the vehicle will be equipped with a function called AEB, which can automatically brake and decelerate when the driver is not aware of the danger or the coming danger.

So what is AEB?
Little friend, please take notes. Here’s the point!!

What is AEB?
AEB (autonomous emergency braking) is commonly known as automatic emergency braking, which is applied automatically when a vehicle detects a possible collision, so as to reduce the speed of the vehicle and avoid the collision as much as possible. It is part of functions of ADAS.

In short, AEB is the function that the system produces braking deceleration to reduce the collision speed or even avoid collision completely when the driver does not pay attention to the dangerous situation or has no time to respond to the unexpected situation.

Is AEB reliable? How do “siege lions” ensure their functions?

How to guarantee AEB function in development phase?
According to the requirements of regulations and real life scenarios, generally, at the later stage of ADAS system development, the test engineer will test the AEB function, which is generally divided into three scenarios: vehicle to vehicle scenario, vehicle to pedestrian scenario, and vehicle to two wheeled vehicle scenario.

Car to car scene: simulating car rear end scene
The dummy vehicle is used to simulate the rear of the real vehicle, and its front direction is the same as that of the test vehicle. The tested vehicle is behind the target vehicle and approaches the target vehicle at a constant speed. The driver does not take any braking measures to test whether the tested vehicle can recognize the vehicle in front and take automatic braking. The final evaluation is based on the collision speed of the two vehicles. In the case of active collision avoidance, the collision speed depends on the speed Is 0

Vehicle to pedestrian scene: pedestrian crossing simulation
The dummy is used to simulate the pedestrian crossing the road at a certain speed. The pedestrian path and the measured vehicle path are perpendicular to each other. The position of the collision point between the dummy and the vehicle can be controlled by path planning in advance. The evaluation is also based on the collision speed.

Car to bike scene: simulating bicycle crossing the road
The bicycle model is used to simulate the bicycle crossing the road at a certain speed. The bicycle path and the measured vehicle path are perpendicular to each other. The position of the collision point between bicycle and vehicle can be controlled by path planning in advance, and the evaluation basis is the collision speed.
Through layers of checks, test “siege lion” will eventually be equipped with reliable performance AEB function of the car delivered to the hands of consumers.