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Collision warning method and device

A vehicle and target technology, applied in the field of collision warning methods and devices, can solve the problems of late warning, early warning, and low warning effectiveness.

Active Publication Date: 2021-01-05
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because different drivers have different driving styles and driving habits, using the above-mentioned unified early warning method may cause premature warning and cause interference to the driver, or may also occur too late warning, resulting in invalid warning
[0005] In summary, there is an urgent need for a collision early warning method to solve the technical problem of low early warning effectiveness caused by the use of a unified early warning method in the prior art

Method used

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  • Collision warning method and device
  • Collision warning method and device

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Embodiment Construction

[0146] The present application will be described in detail below in conjunction with the accompanying drawings.

[0147] figure 1 is a schematic diagram of the forward collision process, such as figure 1 As shown, the forward collision process can be divided into 4 stages according to the degree of danger. figure 1 The four stages are described separately. Stage 1: In the comfortable driving stage, most drivers are aware of the risk of collision and will pre-brake or steer to avoid entering a dangerous state. Stage 2: In the stage of comfortable driving, if the driver brakes or turns, he can maintain a good safe distance and avoid entering a dangerous state. Stage 3: Entering the safe control range, the driver or the system must take emergency deep braking or steering to avoid collision. Stage 4: Due to failure to brake effectively, the vehicle continues to approach the vehicle in front. The system detects that the maximum braking must be applied, and the AEB system is act...

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Abstract

The present application discloses a collision warning method and device in the field of automatic driving. The method includes: training to obtain the target deceleration and target following distance of the first vehicle according to the historical driving data of the first vehicle, and then obtaining the TTC of the first vehicle and the forward vehicle, and based on the magnitude relationship between the TTC and the first threshold , to determine whether to issue a warning message. Since the target deceleration and target following distance of the first vehicle can reflect the driving habits and personality characteristics of the driver of the first vehicle, the TTC obtained based on historical driving data has strong adaptability and can be applied to smart cars Therefore, the problem of low early warning effectiveness based on uniform deceleration and vehicle following distance in the prior art can be effectively solved.

Description

technical field [0001] The invention relates to the field of computer application technology, in particular to a collision warning method and device. Background technique [0002] With the rapid development of the global economy, the number of motor vehicles is increasing rapidly, the roads are constantly expanding, and the car collision accidents in road traffic are becoming more and more serious. In order to avoid car collision accidents, mainstream automakers and technology suppliers in the market basically provide forward collision warning (forward collision warning, FCW) systems and automatic emergency braking (automatic emergency braking, AEB) systems. [0003] The FCW system mainly obtains the longitudinal distance and speed between the vehicle and the vehicle in front by real-time monitoring of the vehicle in front, calculates the time of collision according to the unified driver's control ability, and makes the driver aware of the danger by outputting early warning ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/16
CPCG08G1/16B60W2040/0872B60W40/08B60W30/095B60W50/14B60W2540/221B60W2554/802B60W2554/804B60W40/09B60W2540/225B60W30/09B60T7/22B60T2201/022B60T17/22B60W2556/10B60W2540/229B60W10/18B60W30/0953
Inventor 华飞孙海珊黄为
Owner HUAWEI TECH CO LTD