A safety judgment and processing method in the driving process of an intelligent network-connected automatic driving automobile

A technology for automatic driving and driving process, which is applied in the field of safety identification and disposal, and can solve the problems of close following distance, loss of life and property, and failure to consider vehicle acceleration or braking performance.

Active Publication Date: 2019-06-14
TIANJIN MUNICIPAL ENG DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the current situation, vehicles driven by people often cannot grasp the surrounding road and vehicle information in time. In the actual driving process, especially under the conditions of heavy traffic flow, there are often bad driving behaviors such as too close to the car and frequent lane changes. In the face of emergencies, due to overreaction or slowness, wrong decisions are made, which lead to accidents and cause a lot of loss of life and property
[0004] Previous safety judgments were mostly based on the distance between adjacent vehicles or the time required for a proposed collision, without considering the acceleration or braking performance of the vehicle itself. Although it can replace accident data as a safety warning standard, it reduces the impact on the vehicle. The accuracy of safety accident prediction, too many safety reminders will cause information overload, which is not conducive to driving safety

Method used

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  • A safety judgment and processing method in the driving process of an intelligent network-connected automatic driving automobile
  • A safety judgment and processing method in the driving process of an intelligent network-connected automatic driving automobile
  • A safety judgment and processing method in the driving process of an intelligent network-connected automatic driving automobile

Examples

Experimental program
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Effect test

Embodiment 1

[0095] Embodiment 1: The safety discrimination and disposal method during the driving process of the intelligent network-linked self-driving car is used for Figure 4 A highway section shown. Vehicles are driving on the carriageway, with one vehicle at the front and the rear, the overtaking lane on the left and the emergency lane on the right. After data detection and extraction, the speed of the vehicle is 90km / h, the relative speed to the vehicle in front is 30km / h, the relative distance to the vehicle in front is 100m, and the deceleration limit of the vehicle itself is 7m / s 2 ; Vehicle braking lag time is 0.3s; the current road traffic management speed is 100km / h, and the safety distance is 160m. After obtaining the above data, start the safety status of the vehicle operation.

[0096] The distance between two vehicles is 100m less than the safety distance of 160m, and the relative speed is 30km / h>0, calculate the deceleration a required for deceleration - 1 =1.46m / s ...

Embodiment 2

[0099] Embodiment 2: The safety discrimination and disposal method during the driving process of the intelligent networked automatic driving vehicle is used for Figure 5 A highway section shown. The vehicle is driving on the roadway, and there are 8 vehicles around, numbered 2 to 9. After data detection and extraction, the speed of the vehicle is 75km / h, and the maximum deceleration of the vehicle itself is 7m / s 2 , vehicle acceleration and braking lag time 0.3s. The weight of the vehicle is 1800kg, there is no one in the vehicle and no cargo. The traffic management speed of the current road is 100km / h, and the safety distance is 160m. The relevant information of the surrounding vehicles is shown in the table below. After obtaining the above data, the safety status of the vehicle operation is started, and the required data and results are summarized in the table below.

[0100]

[0101] According to the calculation result of the method of the present invention, the col...

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Abstract

The invention relates to a safety judgment and processing method in the driving process of an intelligent network-connected automatic driving automobile. The method comprises the following steps: acquiring the relative distance and relative speed of front and rear vehicles in real time through the intelligent network-connected automatic driving automobile, and extracting a traffic management speedand a safety distance of the road and the acceleration and deceleration performances of the vehicle; setting a multi-level safety discrimination index of the automatic driving automobile; further networking to obtain vehicle types, numbers of passengers, cargo carrying quantity, cargo unit prices and vehicle value information of surrounding vehicles when potential safety hazards exist in all surrounding vehicles on the premise that a safety processing method cannot avoid such dangers; selecting the collision kinetic energy loss as an index according to said information, calculating the severity of to-be-collided vehicles, selecting a vehicle with the lowest collision severity to collide, and selecting a vehicle with the lowest collision economic loss to collide if more than two vehicles with the lowest collision severity exist. According to the method, the safety judgment accuracy and reliability of the intelligent network-connected automatic driving automobile in the driving state are improved.

Description

technical field [0001] The invention relates to a method for judging and disposing of safety during driving of an automobile. In particular, it relates to a safety judgment and disposal method during the driving process of an intelligent network-linked self-driving car. Background technique [0002] The related technologies of intelligent networked vehicles have developed rapidly in recent years, and their core technologies are intelligent interconnection technology and automatic driving technology. ICV is an intelligent vehicle with wireless communication and Internet access functions. It can collect the status information and absolute position of the vehicle itself in real time, and obtain the driving information of adjacent vehicles and surrounding environment information. The vehicle or driver communicates driving instructions, and at the same time uses wireless communication technology to transmit driving intentions to surrounding vehicles. [0003] In the current sit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W30/08B60W30/095B60W50/00
Inventor 徐汉清白子建杜鹏马红伟刘岩柯水平孙峣王凯
Owner TIANJIN MUNICIPAL ENG DESIGN & RES INST
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