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Vehicle emergency braking method, device and system

An emergency braking and vehicle technology, applied in the direction of brakes, etc., can solve the problems of potential safety hazards in vehicle driving, large errors in braking deceleration speed, etc., and achieve the effects of reducing the determination time, improving accuracy, and solving potential safety hazards

Inactive Publication Date: 2019-12-31
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing road surface adhesion coefficient estimation method, the vehicle body and wheels are measured and monitored, and the road adhesion coefficient is estimated according to the vehicle parameter changes, but this method requires the vehicle to travel a certain distance on the road to obtain a more accurate However, once a dangerous situation occurs in the process, the adhesion coefficient has not been accurately obtained, and the braking deceleration speed determined by the vehicle according to the adhesion coefficient has a large error, and there are potential safety hazards in the driving of the vehicle.

Method used

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  • Vehicle emergency braking method, device and system
  • Vehicle emergency braking method, device and system
  • Vehicle emergency braking method, device and system

Examples

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Embodiment 1

[0029] figure 1 It is a flow chart of the steps of a vehicle emergency braking method provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation where the vehicle performs emergency braking. The method can be executed by the vehicle emergency braking device. The device can adopt implemented in hardware and / or software. see figure 1 , usually includes the following steps:

[0030] Step 101, send the position parameter to the car cloud platform to obtain the adhesion coefficient.

[0031] Among them, the position parameter can be the position information of the vehicle, including information such as latitude and longitude or altitude, etc., which can be obtained by the positioning module installed in the vehicle. The car cloud platform can be a cloud server, which can perform data calculation and vehicle data interaction. It is the ratio of the adhesion to the normal pressure of the vehicle tire, which can be used to characterize the sta...

Embodiment 2

[0038] figure 2 It is a flow chart of the steps of a vehicle emergency braking method provided by Embodiment 2 of the present invention. This embodiment is embodied on the basis of the above-mentioned embodiments. In the embodiment of the present invention, the vehicle can pre-acquire each road the adhesion coefficient. Correspondingly, the method of the embodiment of the present invention includes:

[0039] Step 201. Send the road position parameters of each road in the planned route to the car cloud platform to obtain the adhesion coefficient; wherein, the adhesion coefficient is determined by the car cloud platform according to each road position parameter.

[0040] Wherein, the planned route may be a driving route generated according to the driver's starting position and the target position, the planned route may be generated by the vehicle's navigation module, the road may be a component of the planned route, and may be the road that the vehicle needs to pass to reach t...

Embodiment 3

[0053] image 3 It is a flow chart of the steps of a vehicle emergency braking method provided by Embodiment 3 of the present invention. This embodiment is applicable to the situation where the vehicle performs emergency braking. This method can be applied to the car cloud platform. It can be executed by a mobile device, and the device can be implemented by means of hardware and / or software. see image 3 , usually includes the following steps:

[0054] Step 301. Determine the corresponding adhesion coefficient according to the position parameters of the target vehicle.

[0055] Among them, the target vehicle can be a vehicle that needs to obtain the adhesion coefficient, or it can be a vehicle driving on a new road. The location parameter can be a parameter that characterizes the geographical location of the target vehicle, and can be parameters such as the longitude, latitude and altitude of the target vehicle. The adhesion coefficient can be The adhesion coefficient betwe...

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Abstract

The invention discloses a vehicle emergency braking method, device and system. The method includes the steps that position parameters are sent to a vehicle cloud platform to acquire an attachment coefficient; and the braking deceleration is determined according to the attachment coefficient, and emergency braking is carried out according to the braking deceleration. According to the technical scheme, the accurate attachment coefficient is acquired on the vehicle cloud platform through the position parameters of a vehicle, the calculation accuracy of the attachment coefficient is improved, thetime for determining the attachment coefficient of the vehicle is shortened, the error of the braking speed is reduced, and the driving safety of the vehicle can be improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of computer applications, and in particular to a vehicle emergency braking method, device and system. Background technique [0002] With the development of cloud computing technology, cloud computing technology is more and more applied to all aspects of life. Among them, the car cloud platform is an important embodiment of the application of cloud computing to the automotive field. The car cloud platform further improves the safety and security of cars. comfort. In the automotive field, the emergency braking function of the vehicle is an important guarantee for the safety of the driver's life and property. [0003] In the prior art, when the vehicle encounters an emergency, the emergency braking system is automatically activated, and the controller determines the required braking deceleration through the road surface adhesion coefficient. In the existing road surface adhesion coef...

Claims

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Application Information

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IPC IPC(8): B60T8/171B60T8/172
CPCB60T8/171B60T8/172
Inventor 迟霆王迪刘涛蒋鑫王兴东王新竹程悦
Owner CHINA FIRST AUTOMOBILE
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