System for controlling automatic car-following operation and method thereof

Abstract

The invention discloses a system for controlling automatic car-following operation and a method thereof. The system comprises a piloting-car control system and following-car control systems, wherein the piloting-car control system is arranged on a piloting car, and the following-car control systems are arranged on following cars and communicate with the piloting-car control system. The piloting-car control system collects related data about the piloting car through a plurality of sensors and a GPS positioning device which are arranged on the piloting car, and sends the data to the following car through a car-car communicator. Each following-car control system receives the data based on a car-car communicator and collects data through a plurality of sensors, a GPS positioning device, a radar, a camera and the like which are arranged on the following car, and then controls automatic car-following driving of the following car according to the data. Multi-data is integrated to judge the following situation of the following car so that the safety and the reliability of automatic driving can be ensured effectively.

Description

technical field [0001] The invention belongs to the technical field of automobile electronic control, and in particular relates to an automatic car-following control system and a method thereof. Background technique [0002] With the development of automotive electronic control technology, intelligent sensing technology and control technology have become more and more mature in automobiles, which has also enabled the application of intelligent driving assistance technologies, such as fixed-speed cruise, adaptive cruise, and car-following driving systems. It can greatly relieve the driver's operational fatigue and improve the comfort of the vehicle. Moreover, multiple vehicles follow vehicles continuously in a short distance, which can increase the traffic density on the road and reduce congestion. It can also reduce wind resistance, energy saving and emission reduction when used on high speed. [0003] But the current similar system has the following problems: [0004] (1)...

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Problems solved by technology

And through the sensor to observe the change of the distance between vehicles or the speed of the vehicle ahead, and then take acceleration or braking measures, there will often be a large lag, which will cause drastic changes in the distance between vehicles, and even traffic accidents such as rear-end collisions. Therefore, it is necessary to use a larger Inter-vehicle distance

[0005] (2) For the automatic car-following system based on radar or camera sensors, it is difficult to control the steering and vehicle trajectory to meet the common driving conditions of the car. For example, turning control relies on sensors such as radar or cameras, but once the vehicle turns sharply, The sensor of the rear vehicle may lose the target of the vehicle in front, resulting in loss of control; and also requires a larger distance between vehicles to avoid accidents caused by control lag

[0006] (3) The automatic car-following system based on GPS positioning often relies too much on GPS accuracy, and it is difficult to achieve the desired effect in civilian GPS with low accuracy and is greatly affected by the environment (such as weather, building shelter, tunnels, etc.)

And this method will cause the rear car and the front car to turn at different positions at the same time when driving on a curve, and then drive on different paths, causing the rear car to be dangerous.

[0008] Therefore, the current existing cruise control system and automatic follow-up driving system are more aimed at the small corner steering conditions such as straight line conditions and lane changes, but are poor in handling conditions such as large corner steering. The combination of these two methods does not solve problems such as turning at intersections and turning around.

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