Traffic-priority-based lane change danger collision avoiding method

A priority and vehicle technology, applied in the field of intelligent transportation, can solve problems such as difficulty in obtaining accurate driving information of surrounding vehicles, lack of vehicle-vehicle information interaction and interaction, and impact judgment

Active Publication Date: 2012-11-28
WUHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the existing data source for active avoidance of lane-changing hazards is the driving information of a single vehicle, which lacks information interaction an

Method used

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  • Traffic-priority-based lane change danger collision avoiding method
  • Traffic-priority-based lane change danger collision avoiding method
  • Traffic-priority-based lane change danger collision avoiding method

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Embodiment Construction

[0092] The present invention transmits the posture of the self-vehicle to the surrounding vehicles through the vehicle-vehicle information interaction, and according to the posture parameters between the self-vehicle and the front and rear vehicles, warns the driver of danger in the process of changing lanes and eliminates such danger. The method of real-time acquisition of attitude is an existing technology. During implementation, the real-time acquisition of the on-board vehicle information collection equipment can be used to collect the front of the vehicle and the rear of the front vehicle, and the projected distance l (unit m) between the rear of the vehicle and the front of the rear vehicle in the direction of the road. , collect the vehicle instantaneous velocity v (unit m / s) and acceleration a (unit m / s) through the vehicle CAN bus 2 ). Through vehicle-to-vehicle information interaction, the information of this vehicle is transmitted to other vehicles. The on-board ve...

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Abstract

The invention discloses a traffic-priority-based lane change danger collision avoiding method which comprises the following steps of: acquiring running information and traffic priorities of a vehicle and surrounding vehicles; if the running vehicle is set as a vehicle M, and a vehicle running in a target lane is set as vehicle D, when the vehicle M is ready to change lane, computing the safe lane change time of the vehicle M, wherein the computed permitted maximum safe lane change time t2 is taken as a safe lane change time threshold; carrying out safe lane change time evaluation, and intervening the braking of the vehicle M or the vehicle D according to the priorities when the time is not safe enough; and computing the safe lane change time of the vehicle M again until the lane change of the vehicle M is completed. According to the invention, possible collision can be efficiently and correctly judged in real time through comprehensively analyzing and predicting state information of a plurality of vehicles; through giving direct visual prompt to drivers and performing braking intervention on the vehicles, the life safety and property safety of the drivers in the lane change process are ensured; and for the vehicles with higher traffic priorities, the prior passing of the vehicles in the running process can be ensured, and thus the traffic efficiency is ensured.

Description

technical field [0001] The invention relates to the field of intelligent transportation, in particular to a method for lane-changing danger collision avoidance based on vehicle traffic priority. Background technique [0002] Lane-changing danger collision avoidance under the condition of vehicle-vehicle information interaction is an important means to improve the level of active safety assurance in the process of lane-changing, especially when the vehicle in front is forced to change lanes in a dangerous situation. Moreover, special vehicles, such as fire trucks and ambulances, need to be avoided in time in case of emergencies, so as to improve the traffic efficiency of these vehicles and avoid damage to public interests. [0003] In the process of avoiding the danger of changing lanes, especially when the vehicle is in the blind spot of the vehicle changing lanes, the two vehicles are prone to rear-end collisions, collisions and side scrapes and other traffic accidents, whi...

Claims

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Application Information

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IPC IPC(8): G08G1/16
Inventor 李必军李清泉李明王鑫
Owner WUHAN UNIV
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