Automotive lateral safety comprehensive forewarning method and device

A vehicle-side, safety technology, applied in the direction of road vehicle traffic control system, traffic flow detection, instruments, etc., can solve the problems of false alarm, failure to consider the lateral slope of the road, inaccurate warning threshold value of lateral acceleration, etc. The effect of casualty accidents, reducing traffic accidents, and reducing false alarms

Inactive Publication Date: 2011-02-09
BEIHANG UNIV
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  • Claims
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Problems solved by technology

[0006] (1) The lateral acceleration stability boundary calculated by the method of the patent application is obtained based on the horizontal road surface, without considering the influence of the road lateral slope, and the lateral acceleration early warning threshold value calculated on the road surface with the road lateral slope is inaccurate
[0007] (2) The lateral early warning method proposed in this patent application does not consider the influence of road surface adhesion coefficient, and there are false alarms of rollover accidents under wet and slippery road surfaces
[0008] As for the research on vehicle anti-skid warning research, there are no relevant reports so far.

Method used

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  • Automotive lateral safety comprehensive forewarning method and device
  • Automotive lateral safety comprehensive forewarning method and device

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Embodiment Construction

[0050] A kind of vehicle lateral safety comprehensive warning method and its realization device of the present invention are introduced below in conjunction with accompanying drawing and embodiment:

[0051] like figure 1 Shown, a kind of automobile lateral safety comprehensive early warning method, comprises the steps:

[0052] Step 1: Obtain vehicle and road parameters;

[0053] Acquiring vehicle motion information, estimating the road lateral slope, and compensating the measured vehicle lateral acceleration according to the vehicle motion information; specifically, the steps are as follows:

[0054] (1) Obtain vehicle movement information;

[0055]Vehicle motion information is acquired by on-board sensors, including: steering wheel angle δ, lateral acceleration a y，m , yaw rate r and wheel speed v.

[0056] (2) Judging whether the vehicle is turning according to the steering wheel angle δ;

[0057] Set the threshold value δ of the steering wheel angle δ for judging whe...

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Abstract

The invention belongs to the technical field of automobile active safety and in particular relates to an automotive lateral safety comprehensive forewarning method and an automotive lateral safety comprehensive forewarning device. The invention aims to provide the method and the device which have low cost and can forewarn a driver of vehicle sideslip and rollover accidents in advance. The method comprises the following steps of: 1, acquiring vehicle and road parameters; and 2, performing automotive lateral safety comprehensive forewarning. The device comprises an on-vehicle sensor, a forewarning decision making unit and a warning and display device. Based on an on-vehicle limited number and kind of sensor information and by acquiring the vehicle and road parameters and performing the automotive lateral safety comprehensive forewarning, the method realizes the real-time forewarning of automobile sideslip or rollover accidents, and has great significance for reducing traffic accidents.

Description

technical field [0001] The invention belongs to the technical field of automobile active safety, and in particular relates to an automobile lateral safety comprehensive early warning method and device. Background technique [0002] In recent years, with the rapid development of transportation, traffic accidents caused by vehicle rollovers and sideslips are also increasing, especially the frequent occurrence of mass traffic accidents, causing many casualties and huge property losses. The research of Audi (Audi) company shows: along with the increase of automobile speed, the number of car sideslip accidents also increases sharply, and the speed of a vehicle is between 80km / h and 100km / h, and 40% of the accidents that cause personal injuries are related to automobiles. It is related to the sideslip of the car, and when the speed of the vehicle reaches 160km / h, almost all accidents are caused by the sideslip of the car. When the vehicle turns at high speed (mountain road drivin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/052G08G1/01
Inventor 余贵珍丁能根王健郭魁元冯冲康乐俞志华
Owner BEIHANG UNIV
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