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 manufacturing cost is low.
CN102879210AInactive Publication Date: 2013-01-16JILIN UNIV
6 Cites 26 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JILIN UNIV
Publication Date
2013-01-16
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

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 ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More