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Monitoring system and analyzing system based on image recognition and used for steel rail longitudinal resistance experiment

A resistance test and image recognition technology, which is applied in the direction of analyzing materials, character and pattern recognition, and measuring devices, can solve problems such as insufficient accuracy of strain monitoring, and achieve the effect of simple structure, low maintenance cost, and easy disassembly

Pending Publication Date: 2020-02-28
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of insufficient accuracy of strain monitoring in the rail longitudinal resistance test in the prior art, to provide a monitoring system for the rail longitudinal resistance test based on image recognition, and further, to obtain a monitoring system based on the monitoring system analysis system

Method used

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  • Monitoring system and analyzing system based on image recognition and used for steel rail longitudinal resistance experiment
  • Monitoring system and analyzing system based on image recognition and used for steel rail longitudinal resistance experiment
  • Monitoring system and analyzing system based on image recognition and used for steel rail longitudinal resistance experiment

Examples

Experimental program
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Effect test

Embodiment 1

[0042] A monitoring system for a longitudinal resistance test of a steel rail based on image recognition, comprising a calibration plate and sequentially connected cameras I, an image extraction system I and an image processing system I;

[0043] The number of the calibration plate is one, which is fixed on the side of the rail waist of the rail test piece; the calibration plate is located in the field of view of the camera I, and the camera I is fixed on the side of the rail test piece for video recording during the longitudinal resistance test of the rail, During the video recording process, the shooting angle of view of the camera I is fixed;

[0044] Camera I is fixed in such as Figure 4 On the camera fixing device 10 shown, the camera fixing device 10 is hingedly connected with the camera fixing platform 7, and the camera fixing platform 7 is movably connected with the camera bracket 6, as shown in FIG. image 3 As shown, the camera bracket 6 is used to move the camera fi...

Embodiment 2

[0048] An analysis system for rail longitudinal resistance test based on image recognition, such as figure 1 As shown, including a kind of monitoring system of the rail longitudinal resistance test based on image recognition in the embodiment 1 (1 is the camera 1 in the figure, 2 is the rail test piece, 3 is the iron working platform, 11 is the image extraction system 1, 12 is the image processing system 1, 14 is the calibration board), the interconnected stress acquisition system and the data processing system 13;

[0049] The stress acquisition system is used to collect the stress data that changes at any time during the longitudinal resistance test of the rail;

[0050] The stress acquisition system is composed of the interconnected strain gauges 5 and the stress sensor display screen 15, as well as the sequentially connected camera II, the image extraction system II and the image processing system II, and the image processing system II is connected with the data processing...

Embodiment 3

[0059] An analysis system for rail longitudinal resistance test based on image recognition, such as figure 2 As shown, including the monitoring system of the image recognition-based longitudinal resistance test of the rail, the interconnected stress acquisition system and the data processing system 13 in Example 1;

[0060] The stress acquisition system is used to collect the stress data that changes from time to time during the longitudinal resistance test of the rail. The image processing system 112 in the monitoring system is connected with the data processing system 13. The stress acquisition system consists of the sequentially connected strain gauges 5, data acquisition instruments 4 and PC machine is composed of 16; the strain gauge 5 is installed on the rail test piece, which is used to measure the stress data that changes from time to time during the longitudinal resistance test of the rail; the data acquisition instrument is used to collect the stress data that change...

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Abstract

The invention relates to a monitoring system and an analyzing system based on image recognition and used for a steel rail longitudinal resistance experiment. The monitoring system comprises more thanone calibration plate, a camera I (for video recording), an image extraction system I (for extracting images in recorded video) and an image processing system I (for processing the images to acquire strain data), the camera I, the image extraction system I and the image processing system I are in sequential connection, and the calibration plates are fixed on the side face of a steel rail test piece rail web and positioned within a field of view range of the camera I; the analyzing system comprises the monitoring system and further comprises a strain collection system (for collecting stress data) and a data processing system in mutual connection, and the image processing system I is connected with the data processing system which is used for processing the strain data and the stress data and outputting analysis results. Monitoring of steel rail strain in the steel rail longitudinal resistance experiment can be realized by using an image processing method while data are analyzed, so thatthe monitoring system and the analyzing system are suitable for popularization and use.

Description

technical field [0001] The invention belongs to the technical field of test devices, and relates to a monitoring system and an analysis system for a longitudinal resistance test of a rail based on image recognition. Background technique [0002] In the rail transit road structure, due to the strong ability of the concrete ballast to maintain the geometric shape, the longitudinal resistance of the line is generally determined by the longitudinal resistance of the rail formed by the restraint of the elastic fastener. The longitudinal resistance of the rail is not only an important parameter in the design of the track structure, but also a necessary basic data in the railway engineering construction standards, railway product standards and operation and maintenance standards, and it needs to be determined by scientific and accurate methods. At present, the strain monitoring method in the rail longitudinal resistance test is mainly measured by the contact strain sensor. The cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/06G06K9/00
CPCG01N3/066G01N3/068G01N2203/0075G01N2203/0647G01N2203/0617G01N2203/0676G01N2203/0682G06V20/10
Inventor 路宏遥李再帏何越磊王鲁明
Owner SHANGHAI UNIV OF ENG SCI
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