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A Time-Based Analysis Method of Vehicle Collision Probability at Intersection

A technology for intersections and vehicle collisions, which is applied in traffic control systems, anti-collision systems, and traffic flow detection of road vehicles. Problems with trams

Active Publication Date: 2021-09-10
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the predicted speed value method of this method does not determine the accuracy of the prediction, and the traditional collision probability algorithm is only for the calculation of the collision probability between cars
The existence of trams is not considered, resulting in narrow object-oriented

Method used

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  • A Time-Based Analysis Method of Vehicle Collision Probability at Intersection
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  • A Time-Based Analysis Method of Vehicle Collision Probability at Intersection

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Embodiment

[0064] In order to verify the feasibility of the present invention, the present invention is further described in conjunction with the embodiments and the accompanying drawings. The simulation experiment of the tram and the car was carried out under Matlab. The initial value of the speed, the collision distance, and the simulation parameters are set as follows:

[0065] The tram body is 20m long, and the car body is 3.6m long;

[0066] Velocity disturbance value: δ k ~N(0,0.02),δ k ~N(0,0.04), where μ=0, that is, both vehicles run at a constant speed;

[0067] The initial speed of the tram is 35km / h, and the initial speed of the car is 40km / h;

[0068] The displacement of the tram from the collision point is S1=800m, and the displacement of the car from the collision point is S2=1000m;

[0069] The number of Monte Carlo simulation experiments is 1000 times;

[0070] Assume that the tram and car driving scenarios are as follows figure 2 shown. By giving the initial valu...

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Abstract

The invention discloses a method for analyzing the collision probability of a vehicle at an intersection based on time. The running speed of the vehicle is obtained through a vehicle-mounted sensor, and the running state of the vehicle is judged by analyzing the speed, and the relationship between the speed and the displacement is determined by using the judged running state of the vehicle. Then, Monte Carlo simulation is used to obtain the time probability of the vehicle reaching the collision point, and the time distribution function is obtained by fitting the obtained time probability. Finally, the vehicle collision probability is calculated by using the collision probability calculation formula, and the vehicle running state can be calculated through the collision probability Decision-making, the invention helps to improve the effectiveness of collision probability calculation and improve the safety of vehicle operation.

Description

technical field [0001] The invention belongs to the technical field of solving vehicle collision probability at intersections, and in particular relates to a time-based analysis method for vehicle collision probability at intersections. Background technique [0002] Tram is a light rail transit vehicle driven by electricity and running on the track. It is a kind of public transportation, referred to as tram, which is a kind of light rail. The carriages generally do not exceed five sections. The tram is driven by electricity and does not emit exhaust gas. It is a pollution-free and environmentally friendly transportation. Compared with other public transportation, it is more convenient, more comfortable, more beautiful and safer. [0003] Although there are more means of transportation now, it is more inconvenient for people to travel. Slow driving and traffic jams can be seen everywhere. The increasingly serious global energy crisis and air pollution problems have also aggr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/01G08G1/16
CPCG08G1/0137G08G1/166
Inventor 谢国孙澜澜黑新宏冯楠王文卿马维纲赵金伟张春丽张永艳
Owner XIAN UNIV OF TECH
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