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A car-following automatic driving method based on driving safety distance

A driving safety and automatic driving technology, which is applied to the traffic control system, instruments, arrangement of road vehicles, etc., can solve the problems of not taking into account the driver's driving habits, frequent operation, and reducing driving comfort, so as to avoid personal judgment. Errors, safety incidents reduction, likelihood reduction effect

Active Publication Date: 2020-01-07
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing car-following automatic driving methods or systems do not take into account the driver's own driving habits and the actual following distance that the driver can tolerate, resulting in frequent operations and reduced driving comfort

Method used

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  • A car-following automatic driving method based on driving safety distance
  • A car-following automatic driving method based on driving safety distance

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Embodiment Construction

[0036] Below in conjunction with accompanying drawing, the present invention will be further described:

[0037] (A) collecting the static operating parameters of the target vehicle;

[0038] (A1) Determine the maximum allowable driving speed v of the target vehicle max =30m / s, maximum acceleration a max =5m / s 2 , the maximum braking deceleration

[0039] (A2) In the case of acceleration and deceleration, the limit acceleration tolerance is α + =10%, limit deceleration tolerance is β - = -10%;

[0040] (B) Collect the dynamic operating parameters of the target vehicle and the vehicle in front;

[0041] (B1) Collect the actual driving distance between the target vehicle and the vehicle in front through the on-board equipment configured on the target vehicle, denoted as l 1 =200m;

[0042] (B2) Collect the current driving speed of the target vehicle and the current driving speed of the vehicle in front through the on-board equipment configured on the target vehicle, de...

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Abstract

The invention discloses a vehicle following automatic driving method based on a driving safety distance. The vehicle following automatic driving method comprises steps that (A) a static operation parameter of a target vehicle is acquired; (B) the dynamic operation parameter of the target vehicle and a dynamic operation parameter of a preceding vehicle are acquired; (C)the safety driving distance of the target vehicle is determined according to the driving speed of the target vehicle and the driving speed of the preceding vehicle; (D) the operation parameter of the target vehicle is determined by combining the actual driving distance of the vehicle and the safe driving distance of the vehicle; (E) according to the recommended operation parameters of the target vehicle, the operation parameters of the target vehicle are determined. By adopting the vehicle following automatic driving method provided by the invention, the vehicle is used to determine a relative motion relation with the preceding vehicle quickly and accurately, and the recommended operation parameters of the target vehicle in different running states are analyzed, and the automatic driving of the vehicle is realized.

Description

technical field [0001] The invention relates to an automatic driving method, in particular to a car-following automatic driving method based on a driving safety distance. Background technique [0002] As a hot research direction in recent years, intelligent transportation has a great leading role in the development direction of urban road traffic in the future, and it is the development direction of the future transportation system. At present, the intelligent transportation system effectively integrates advanced traffic information collection technology, data transmission and communication technology, high-efficiency computer technology and precise control technology, and is successfully applied to the regional traffic management system, which can realize real-time, accurate, Efficiently manage integrated transportation systems within a specific area. [0003] The existing follow-up automatic driving methods or systems do not take into account the driver's own driving habi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/052G08G1/00
CPCG08G1/052G08G1/22
Inventor 王炜吴忠君胡晓健李晓伟
Owner SOUTHEAST UNIV
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