Method for automatic measurement of shaking amplitude of straddle-seat type single traffic rail beam

A straddle-type monorail, automatic measurement technology, applied in the direction of measurement device, measurement of ultrasonic/sonic/infrasonic, image analysis, etc., can solve the problem of unguaranteed measurement accuracy, high labor intensity, affecting the service life of vehicles and track components and operating safety And other issues

Active Publication Date: 2011-04-20
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the effect of long-term running of the vehicle, its shaking range will gradually increase, which not only affects the smooth operation of the train, but also seriously affects the service life and operational safety of the vehicle and track components
After searching, so far, the measurement of the swaying amplitude of the straddle-type monorail traffic track beam can only be measured by manual prying of the straddle-type monorail traffic track beam through displacement sensors or other displacement measuring instruments, such as dial indicators, micrometers, etc. The size of its displacement is realized, because it is an artificial outdoor high-altitude operation, the labor intensity is high, the work efficiency is low, the safety is poor, and the accuracy and standardization are lacking, the reliability is poor, and the measurement accuracy cannot be guaranteed.

Method used

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  • Method for automatic measurement of shaking amplitude of straddle-seat type single traffic rail beam
  • Method for automatic measurement of shaking amplitude of straddle-seat type single traffic rail beam
  • Method for automatic measurement of shaking amplitude of straddle-seat type single traffic rail beam

Examples

Experimental program
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Effect test

Embodiment 1

[0051] In this embodiment, the measurement accuracy is 0.2mm, a single template is used, and the template is a rectangle. When a single template is selected, the factor of camera shaking is ignored. In this case, only the displacement difference of the single template in the image relative to the coordinate origin is required to obtain the shake amplitude value of the measured track beam. The image resolution is 640×512, the frame rate is 100 frames per second, and the edge detection algorithm is used to make the feature template.

[0052] In Fig. 1, the equipment for measuring the swaying amplitude of the track beam includes an excitation vehicle 3 and an image data acquisition vehicle composed of a straddle monorail vehicle 7, a digital camera 4, a computer 5 and an AC power supply 6. Both the incentive car 3 and the straddle-type monorail traffic car 7 are Q2DGZ-1 cars produced by Xiangtan Motor Company. Camera 4 adopts DH-HV1302 digital camera produced by China Daheng (G...

Embodiment 2

[0094] In Fig. 1, the equipment used is exactly the same as in Example 1. In this embodiment, the measurement accuracy is 0.2mm, a single template is used, the template is rectangular, the image resolution is 640×512, the frame rate is 100 frames per second, and the edge detection algorithm is used to make the feature template.

[0095] In Figure 1, Figure 2, Figure 4, Figure 9, and Figure 10: the specific steps and technical requirements for measuring the track beam are as follows:

[0096] In the step (1-2), the camera is a digital camera, the measurement accuracy A is 0.2 mm, the calibration template is a 38-type high-precision calibration template, and the digital camera lens is fixed on the front of the image data acquisition vehicle Above, the distance between the two points is 100mm, so that the pixel coordinate difference between the two points on the corresponding bitmap image in the computer is (1 / 0.2)×100=500 pixels, and the vertical distance is 230mm;

[0097] In...

Embodiment 3

[0122] In Fig. 1, the equipment used is exactly the same as in Example 1. In this embodiment, the measurement accuracy is 0.2mm, a single template is used, the template is circular, the image resolution is 640×512, the frame rate is 100 frames per second, and the differential method is used to extract the edge of the image to make the feature template.

[0123] In Fig. 1, Fig. 2, Fig. 5, Fig. 9, and Fig. 10, the specific implementation steps and technical requirements are compared with the technical solutions, and the same steps and technical requirements are not repeated here. The different technical requirements are as follows:

[0124] In the step (1-2), the camera is a digital camera, the measurement accuracy A is 0.2 mm, the calibration template is a 38-type high-precision calibration template, and the digital camera lens is fixed on the front of the image data acquisition vehicle Above, the distance between the two points is 100mm, so that the pixel coordinate difference...

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Abstract

The invention provides a method of automatically measuring the shaking amplitude of a straddle type monorail transit rail beam, which relates to a method of measuring the shaking amplitude of a monorail transit rail beam, in particular to the method of automatically measuring the shaking amplitude of a straddle type monorail transit rail beam. The method comprises the preparation work before measurement is preformed, program is initialized, an incentive vehicle and an image data collection vehicle are stopped at a position to be measured, a camera lens is aimed at a measurement target, a beamnumber of a rail beam to be measured is inputted, images are collected and stored, the vehicles are stopped and sequential images collection is stopped, processing images is performed, the shaking amplitude of the rail beam measured is calculated, saving the processing results are saved, report forms are printed and artificial instructions are awaited. The shaking amplitude of the rail beam can be measured automatically, rapidly, accurately, high efficiently and safely with the method.

Description

Technical field: [0001] The invention relates to a method for measuring the shaking amplitude of a monorail traffic track beam, in particular to a method for automatically measuring the shaking amplitude of a straddle type monorail traffic track beam. Background technique: [0002] During the manufacture and installation of straddle-type monorail traffic track beams and supports, there will inevitably be errors. When a vehicle passes through the straddle-type monorail traffic track beams, the beam body will shake slightly. The actual test shows that the swaying amplitude of the track beam along the same direction of the straddle monorail traffic vehicle is usually within 1 mm, and the swaying amplitude of the track beam in the direction perpendicular to the straddle monorail traffic vehicle is usually within 3 mm. Under the effect of long-term running of the vehicle, its shaking range will gradually increase, which not only affects the smooth operation of the train, but also...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H17/00G06T7/00
Inventor 汪同庆叶俊勇蒋昀赟
Owner CHONGQING UNIV
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