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Car safety control method based on bidirectional speed measurement

A technology of automobile safety and control method, which is applied to control devices, vehicle components, input parameters of external conditions, etc., can solve problems such as affecting control efficiency, long distance of reminding brakes, etc., to avoid rear-end collision of vehicles.

Pending Publication Date: 2016-11-16
成都生辉电子科技有限公司
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AI Technical Summary

Problems solved by technology

If the intelligent driving or unmanned driving mode is adopted, the control method will affect the control efficiency of the intelligent driving or unmanned driving mode due to the long distance of reminding the brakes

Method used

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Embodiment Construction

[0016] The present invention will be further described in detail below in conjunction with examples, but the embodiments of the present invention are not limited thereto.

[0017] The vehicle collision avoidance control method of this embodiment is more suitable for intelligent driving mode or unmanned driving mode, including the following steps:

[0018] 1) The car is equipped with a front distance measuring unit and a rear distance measuring unit. The front distance measuring unit measures the distance S between the car and the front car in the driving direction of the car, and the rear distance measuring unit measures the distance between the car and the car in the opposite direction. The distance S4 between the rear cars is sent to the control unit;

[0019] 2) There is a speed measuring unit on the car. The speed measuring unit measures the relative speed V2 between the car and the front car in the driving direction of the car, and the relative speed V4 between the car an...

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Abstract

The invention discloses a car safety control method based on bidirectional speed measurement. The method includes the following steps that (1) a front distance measuring unit and a rear distance measuring unit are arranged on a car, the front distance measuring unit is used for measuring the distance S between the car and a car located in front in the driving direction of the car, and the rear distance measuring unit is used for measuring the distance S4 between the car and a car located behind in the direction opposite to the driving direction of the car, and the distances are transmitted to a control unit; (2) a speed measuring unit is arranged on the car, the speed measuring unit is used for measuring the relative speed V2 between the car and the car located in front in the driving direction of the car, and the relative speed V4 between the car and the car located behind in the direction opposite to the driving direction of the car, and the relative speeds are transmitted to the control unit; and (3) the control unit receives the information, outputs brake signals and controls the car to brake. The method can be used for conducting safe car anti-collision control in a short distance and is particularly suitable for an intelligent driving mode or an unmanned driving mode.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an automobile safety control method based on two-way speed measurement. Background technique [0002] Car rear-end collision is a traffic accident that often occurs on the highway, and its important reason is that it cannot stop immediately when running into unexpected situations. Rear-end collision refers to the behavior that the front of the rear vehicle collides with the rear of the front vehicle when vehicles traveling in the same lane are following behind. It is mainly caused by the follow-up distance being less than the minimum safety distance and the slow response of the driver or the poor performance of the braking system. [0003] The study found that it takes a period of time for the driver to step on the brakes from seeing the situation, which is called the reaction time; There is still a distance to move forward, which is called the braking distance. [0004] C...

Claims

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Application Information

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IPC IPC(8): B60T7/22B60W30/09B60W30/095
CPCB60T7/22B60W30/09B60W30/095B60W2554/80B60W2554/801
Inventor 周辉
Owner 成都生辉电子科技有限公司
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