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Real-time road adhesion coefficient detection method and detection system

A technology of pavement adhesion coefficient and real-time detection, which can be used in measuring devices, instruments, and mechanical devices, etc., and can solve problems such as difficulty in meeting actual needs.

Active Publication Date: 2012-11-07
WANXIANGQIANCHAO CO LTD
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Problems solved by technology

Because there are many factors that affect the road adhesion coefficient, there is a large error in obtaining the road surface adhesion coefficient by the method of estimation.
[0003] After retrieval, domestic and foreign scholars' research on road surface recognition technology is mostly limited to theoretical aspects, which is difficult to meet the actual needs

Method used

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  • Real-time road adhesion coefficient detection method and detection system
  • Real-time road adhesion coefficient detection method and detection system
  • Real-time road adhesion coefficient detection method and detection system

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Embodiment Construction

[0060] In order to test the road surface adhesion coefficient in real time, the invention provides a real-time detection method and a test system for the road surface adhesion coefficient.

[0061] Road surface adhesion coefficient real-time detection method of the present invention comprises the steps:

[0062] (1) Establish a real-time test model and test system for road adhesion coefficient under vehicle braking conditions;

[0063] (2) When the vehicle is driving on a flat road, brake is applied, and the driver depresses the clutch pedal while depressing the brake pedal to isolate the engine from braking;

[0064] (3) The information collection system separately collects the rotational speed of the front and rear wheels, the longitudinal acceleration of the center of mass of the car, the speed of the car, and the vertical load of the front and rear wheels;

[0065] (4) Obtain the road surface adhesion coefficient through the calculation model of the road surface adhesion ...

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Abstract

The invention relates to a real-time road adhesion coefficient detection method and detection system, belongs to the technical field of intelligent automobile detection and monitoring, and is used for real-time accurate detection of road adhesion coefficient. The method comprises the following steps of: establishing a real time road adhesion coefficient detection model and testing system under automobile damped condition; under the condition that the automobile is travelling on a flat road, depressing by a driver a clutch pedal while depressing a brake pedal, so that engine braking is isolated; acquiring the rotation speed of front and back wheels, the longitudinal acceleration of an automobile centroid, the speed of the automobile and the vertical load on the front and back vehicle through an information acquisition system; obtaining the road adhesion coefficient through a road adhesion coefficient computation model; and displaying thee adhesion coefficient on a display unit in real time. The system comprises the information acquisition unit for acquiring automobile information in real time, a data processing unit for processing information input by the information acquisition unit, a singchip system for controlling data acquisition and realizing data computational analysis and controlling result output, and an LED (Light-Emitting Diode) output display unit.

Description

technical field [0001] The invention relates to a detection method and a test system, which belong to the technical field of automobile intelligent detection and monitoring, and are used for real-time detection of road surface adhesion coefficient. Background technique [0002] The road surface adhesion coefficient not only affects the acceleration performance and braking performance of the car, but also affects the handling stability of the car. Knowing the road surface adhesion coefficient in real time and making full use of the road surface adhesion performance can greatly improve the car's acceleration performance, braking performance and handling stability. Real-time online detection of road adhesion coefficient is one of the key technologies necessary for active vehicle control. Because there are many factors that affect the road adhesion coefficient, there is a large error in obtaining the road surface adhesion coefficient by the method of estimation. [0003] After...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N19/04
Inventor 刘玉梅王丽王恒刚熊明烨苏建王鹤鸣赵聪聪张志远刘琦峰徐观张立斌潘洪达陈熔林慧瑛赖政见李梦
Owner WANXIANGQIANCHAO CO LTD
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