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Road surface type recognition method and device based on vertical acceleration and road surface image

A technology of vertical acceleration and acceleration, which is applied in the field of road surface type recognition and devices based on vertical acceleration and road surface images, can solve the problems of limited recognition effect and inability to face road conditions, so as to improve the range and accuracy, and increase the sample dimension Effect

Inactive Publication Date: 2011-12-21
CHANGCHUN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, road surface recognition using image recognition technology alone cannot face complex road conditions, and the recognition effect is limited.

Method used

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  • Road surface type recognition method and device based on vertical acceleration and road surface image
  • Road surface type recognition method and device based on vertical acceleration and road surface image
  • Road surface type recognition method and device based on vertical acceleration and road surface image

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Effect test

Embodiment 1

[0037] The road surface type recognition method based on the vertical acceleration and road surface image in the embodiment of the present invention analyzes the data of the horizontal speed and the acceleration of the vertical method during the driving process of the vehicle, and combines image recognition technology to perform road surface recognition. Such as figure 1 As shown, the whole process needs to collect three data volumes, that is, the vertical acceleration data of the vehicle, the driving speed data and the road surface image data. The entire data processing process is also for the processing of these three data volumes.

[0038] The driving speed of the vehicle is mainly used to generate the horizontal displacement data of the road surface. The vertical acceleration data is combined with the horizontal displacement data of the road surface to form the displacement acceleration data. Then, after processing the displacement acceleration data, the spatial frequenc...

Embodiment 2

[0113] Embodiments of the present invention also provide a road surface type recognition device based on vertical acceleration and road surface images, such as image 3 As shown, it is a schematic structural diagram of a road surface type identification device according to Embodiment 2 of the present invention, which includes:

[0114] Vertical acceleration data collection module 11, is used for collecting the vertical acceleration data of vehicle vertical direction;

[0115] The module may specifically be an acceleration sensor installed at any position on the vehicle. In this embodiment, it is preferably installed on the suspension of the vehicle.

[0116] Traveling speed data collection module 12, is used for collecting the traveling speed data of vehicle; This module can be the encoder device in the ABS anti-lock braking system, and for the vehicle that does not have ABS anti-lock braking system, can set speed detecting device or automobile in addition It has its own spe...

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Abstract

The embodiment of the invention relates to a pavement type recognition method and device based on a vertical acceleration and a pavement image. By analyzing data of a horizontal speed and a vertical acceleration in the running process of a vehicle, adopting an image recognition technology and applying a classifier, pavement recognition is performed. In the method and the device disclosed by the embodiment of the invention, new displacement acceleration characteristic data comprising a space frequency are introduced, so that the defect of the conventional way for performing pavement recognition only by using pavement image data is overcome. Due to the displacement acceleration characteristic data comprising the space frequency and movement data of vertical vibration caused by the movement of the vehicle which is directly contacted with the ground, the status of a pavement surface is represented more directly. Meanwhile, two types of data are fused in combination with image data of a pavement to serve as input data of the classifier, so that the quantity of characteristic data is increased, and the accuracy and application range of pavement recognition are finally enhanced greatly.

Description

technical field [0001] Embodiments of the present invention relate to a road surface type recognition method and device based on vertical acceleration and road surface images, and in particular to a road surface type recognition technology during vehicle driving. Background technique [0002] Road surface recognition technology is of great significance to the safe driving and automatic driving of cars. Through the road surface recognition technology, the computer can actively judge the road surface, so as to adopt corresponding driving strategies to improve the comfort of passengers, save fuel, and avoid dangers in the process of driving. [0003] The road surface recognition technology in the prior art is mainly completed by image processing technology, and the collected road surface images are analyzed by image processing technology, so as to obtain the judgment result of the road surface type. [0004] However, the method of simply using image recognition has certain lim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62G06K9/00
Inventor 王世峰
Owner CHANGCHUN UNIV OF SCI & TECH
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