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Device and method for testing brake performances based on stereoscopic vision

A technology of stereo vision and detection device, which is applied in the direction of measurement device, vehicle test, machine/structural component test, etc. The indirect economic benefits are considerable, the installation is simple, and the measurement accuracy is high.

Inactive Publication Date: 2014-12-10
JILIN UNIV
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Problems solved by technology

None of these instruments can quantitatively give the vehicle offset distance when braking, and cannot monitor in real time. It can only roughly judge whether the vehicle body is offset. The human error is large and the detection accuracy is low.

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  • Device and method for testing brake performances based on stereoscopic vision
  • Device and method for testing brake performances based on stereoscopic vision
  • Device and method for testing brake performances based on stereoscopic vision

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Embodiment Construction

[0038] The specific content and implementation of the present invention will be further described in detail below in conjunction with the embodiments shown in the accompanying drawings.

[0039]The present invention relates to a kind of braking performance detection device based on stereo vision, and this device mainly consists of stepper motor A10 and stepper motor B18 of the same model, CCD camera A11 and camera B19 of the same model, an industrial control computer 9, A millimeter-wave radar 3 is composed of calibration target A53, calibration target B54, calibration target C55, etc. of the same specification. The model selected by the stepping motor is: 90BYG5200D-SAKRML-0301, the step angle is 0.36°, and the moment of inertia is 9000gcm 2 The model of the camera is DH-HV3150UC, which adopts a CMOS color digital image sensor with a resolution of 2048×1536, a USB interface, and a zoom lens; the model of the industrial control computer is Advantech IPC-610; The millimeter-wa...

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Abstract

The invention relates to a device and a method for testing brake performances based on stereoscopic vision, and belongs to vehicle performance testing road test equipment. The device reconstructs a vehicle body contour line three-dimensional coordinate according to vehicle body images shot by two cameras and by utilizing a computer image processing technique to obtain motion trails of a vehicle in the brake process; and speed, braking deceleration and braking deviation displacement are calculated in real time, so that vehicle braking performances are evaluated. The device comprises two DH-HV3150 UC cameras, two stepping motors, two tensioning wheels, a camera support, an industrial control computer, a millimeter-wave radar, three calibrated drones of a same specification and the like. According to the device and the method for testing brake performances based on stereoscopic vision, motion trails of the vehicle in the brake process can be calculated in real time. The method design idea is unique, the testing accuracy and the repeatability are good, and further, the structure is simple, and the installation is convenient. Research results have certain theoretical values and economic values and have good application and promotion prospects.

Description

technical field [0001] The device of the invention belongs to detection equipment of automobile performance, in particular to a new method and device for detection of braking performance based on stereo vision. Based on computer stereo vision, it uses computer image processing technology to reconstruct the three-dimensional coordinates of the body contour line, obtains the trajectory of the car during braking, calculates the speed, braking deceleration and braking deviation displacement in real time, and evaluates the car. braking performance. The device has the characteristics of good detection accuracy and system reliability, and the device has simple structure and reasonable design, and reduces the manufacturing cost of the detection device. Background technique [0002] my country's "Motor Vehicle Operation Safety Technology" GB7258-2012 stipulates that the braking distance and braking stability requirements of a motor vehicle at a specified initial speed should comply ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M17/007
Inventor 张立斌岳洪伟韩玲苏建单洪颖潘洪达单红梅杨玉林戴建国苑风云李昱王贵荣刘琦烽荆忠倩李福齐王鹏
Owner JILIN UNIV
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