Rapid detection method for foreign bodies in triangular holes of railway wagons

A railway freight car, triangular hole technology, applied in image analysis, image enhancement, instrument and other directions, can solve the problems of missed detection, wrong detection, difficulty in ensuring detection accuracy and high efficiency, etc., to improve health and reduce the probability of false alarms , the effect of improving the detection efficiency

Active Publication Date: 2021-03-02
HARBIN KEJIA GENERAL MECHANICAL & ELECTRICAL CO LTD
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that in the prior art, when manual inspection is used to judge whether foreign objects are carried in the triangular hole area, missed inspections and false inspections are likely to occur, and it is difficult to guarantee the accuracy and high efficiency of detection, a new method is proposed. Rapid detection method for foreign bodies in triangular holes of railway wagons

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  • Rapid detection method for foreign bodies in triangular holes of railway wagons
  • Rapid detection method for foreign bodies in triangular holes of railway wagons
  • Rapid detection method for foreign bodies in triangular holes of railway wagons

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specific Embodiment approach 1

[0034] Specific implementation mode one: refer to figure 1 Specifically explaining this embodiment, the method for quickly detecting foreign matter in a triangular hole of a railway freight car described in this embodiment includes the following steps:

[0035] Step 1: Obtain the linear image of the railway wagon;

[0036] Step 2: perform rough positioning on the area to be recognized in the image, and obtain the image img_a after rough positioning;

[0037] Step 3: Locate the position of the triangular hole according to the rough positioning image img_a;

[0038] Step 4: Determine whether there is an abnormality in the shadow of the triangular hole, if not, then detect the next image, and if it exists, go to step 5;

[0039] Step 5: Locate the position of the anomaly in the shadow of the triangular hole;

[0040] Step 6: Locate the shadow area of ​​the abnormal place in the shadow of the triangular hole;

[0041] Step 7: Judging whether the abnormal part in the triangular...

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Abstract

The method for quickly detecting foreign objects in triangular holes of railway wagons relates to the technical field of fault diagnosis of railway vehicles. In the prior art, manual inspection is used to judge whether foreign objects are carried in the triangular hole area, which is prone to missed detection and wrong detection, and it is difficult to guarantee the accuracy of detection. For the problem of accuracy and high efficiency, use automatic image recognition instead of manual inspection, the operation standard is unified, no longer affected by personnel quality and responsibility, effectively improve the quality of operation, improve the stability and accuracy of detection, and improve the health of staff , improve the detection efficiency, the results predicted by the image recognition algorithm cannot be completely guaranteed to be located in the triangular hole, and there is a chance of false positives. At this time, according to the location characteristics of the triangular hole, template matching based on the shadow can effectively find the location of the triangular hole. The template used in this paper is a circular template, which can effectively assist in the positioning of the foreign matter located in the shadow and the position of its shadow.

Description

technical field [0001] The invention relates to the technical field of fault diagnosis of railway vehicles, in particular to a method for quickly detecting foreign objects in triangular holes of railway freight cars. Background technique [0002] During the manual inspection of freight cars on the railway, there is a possibility that some maintenance tools or parts of the car body may fall into the triangular holes. For a long time, the inspectors have used manual inspection (that is, by looking at the images of passing vehicles) to judge whether there are foreign objects in the triangular hole area. The inspection work is very important, but a large number of image screenings make the inspectors in the work process It is extremely prone to fatigue, and it is also prone to missed and wrong detections, making it difficult to guarantee the accuracy and high efficiency of detection. Contents of the invention [0003] The purpose of the present invention is to solve the probl...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00G06T7/11G01V8/10G06T5/00G06T5/30
CPCG01V8/10G06T5/002G06T5/30G06T7/0004G06T2207/30268G06T7/11
Inventor 燕天娇
Owner HARBIN KEJIA GENERAL MECHANICAL & ELECTRICAL CO LTD
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