Wagon triangular hole foreign matter rapid detection method
A technology for railway wagons and detection methods, which is applied in image data processing, instrumentation, optical device exploration, etc., can solve problems such as difficulty in ensuring detection accuracy and high efficiency, missed detection, and false detection, so as to reduce the probability of false positives, Improved health and unification of work standards
Active Publication Date: 2020-12-18
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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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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The invention discloses a railway wagon triangular hole foreign matter rapid detection method, relates to the technical field of railway vehicle fault diagnosis, and aims at solving the problems thatin the prior art, when whether foreign matter is carried in a triangular hole area or not is judged through manual inspection, missing detection and wrong detection are likely to happen, and the detection accuracy and efficiency are difficult to guarantee. Manual detection is replaced with an automatic image recognition mode, the operation standard is unified and is not affected by personnel quality and responsibility any more, the operation quality is effectively improved, the detection stability and accuracy are improved, the health of workers is improved, and the detection efficiency is improved. A result predicted by an image recognition algorithm cannot completely guarantee that the result is certainly located at a triangular hole part and has a false alarm probability, and at the moment, according to the position characteristics of the triangular hole part, template matching is carried out according to shadows, so that the hole position of the triangular hole can be effectively found, the adopted template is an annular template, and positioning of foreign matters at the shadow and the position of the shadow can be effectively assisted.
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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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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