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Vehicle braking system combined control method and system

A technology of vehicle braking and compound control, applied in the field of assisted driving of automobiles, can solve the problems of low ranging accuracy and poor AEBS performance, etc.

Active Publication Date: 2018-11-23
中科安达(北京)科技有限公司
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Problems solved by technology

[0005] The present invention provides a method and system for composite control of a vehicle braking system, which is used to solve the existing defect of poor performance of AEBS due to low ranging accuracy

Method used

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  • Vehicle braking system combined control method and system
  • Vehicle braking system combined control method and system
  • Vehicle braking system combined control method and system

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Embodiment Construction

[0062] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0063] For a method for compound control of a vehicle braking system provided by an embodiment of the present invention, see figure 1 As shown, including steps 101-104:

[0064] Step 101: Continuously collect the first vehicle distance, the second vehicle distance and the third vehicle distance at preset time intervals, and the preset time interval is not greater than 0.1s.

[0065] In the embodiment of the present invention, the vehicle distance refers to the distance between the local vehicle and the obstacle in front (such as the vehicle in front, etc.). The sensors or distance finders in the vehicle can measure the vehicle distance in real time, and then can di...

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Abstract

The invention provides a vehicle braking system combined control method and system. The method includes the steps of consecutively collecting a first vehicle spacing, a second vehicle spacing and a third vehicle spacing at a preset time interval, wherein the preset time interval is not longer than 0.1s; when the second vehicle spacing is smaller than the first vehicle spacing and the third vehiclespacing is smaller than the second vehicle spacing, determining the vehicle spacing variation; determining the driving distance of vehicles within the preset time interval for collecting the second vehicle spacing and the third vehicle spacing and judging whether or not the difference between the driving distance and the vehicle spacing variation is smaller than a preset threshold value; if yes,comparing the third vehicle spacing with data in a braking database to determine whether or not automatic emergency braking needs to be carried out. By means of the method, a high-precision vehicle spacing can be selected out, and the precision of distance measurement of each kind of sensors is greatly improved, so that the precision of prewarning and the accuracy of initiative emergency braking are effectively improved, and the FCWS / AEBS comprehensive performance can be improved.

Description

technical field [0001] The invention relates to the technical field of automobile driving assistance, in particular to a method and system for compound control of a vehicle braking system. Background technique [0002] FCWS / AEBS is an emerging car driving assistance technology product in the world in recent years. It started earlier in developed countries and developed later in China. At present, FCWS (Forward collision warning System, forward collision warning system) has been relatively mature in China, and AEBS (Advanced Emergency Braking System, advance emergency braking system) is still in the research and development stage. The application of this technical product has played a positive role in improving traffic safety and reducing the occurrence and loss of various traffic accidents. FCWS has been the standard configuration of new cars with "two passengers and one hazard" in the factory, and AEBS will also become the standard configuration of new cars with "two passe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W10/18B60W40/00
CPCB60W10/18B60W40/00
Inventor 冉绍平邢伟一李赞
Owner 中科安达(北京)科技有限公司
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