Detection method of foreign objects carried in the corbel holes of railway freight cars

A railway freight car and foreign object detection technology, which is applied in image analysis, image enhancement, instruments, etc., can solve the problems of low detection accuracy and detection efficiency, improve stability and accuracy, unify operation standards, improve operation quality and efficiency effect

Active Publication Date: 2021-03-09
HARBIN KEJIA GENERAL MECHANICAL & ELECTRICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of low detection accuracy and detection efficiency when using manual inspection to judge whether foreign matter is carried in the corbel hole area, and proposes a method for detecting foreign matter carried in the corbel hole of railway freight cars

Method used

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  • Detection method of foreign objects carried in the corbel holes of railway freight cars
  • Detection method of foreign objects carried in the corbel holes of railway freight cars
  • Detection method of foreign objects carried in the corbel holes of railway freight cars

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Experimental program
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specific Embodiment approach 1

[0030] Specific implementation mode one: combine figure 1 This embodiment will be described. The method for detecting foreign matter carried in the bolster hole of a railway freight car described in this embodiment is specifically implemented through the following steps:

[0031] Step 1. Obtain the high-definition grayscale full-vehicle image of the railway freight car, and cut out the image of the corbel hole area from the obtained image;

[0032] Step 2: Detect whether there are foreign objects in the image of the corbel hole area intercepted in step 1, if there are foreign objects, then perform step 3, if there are no foreign objects, then return to step 1;

[0033] Step 3. If the area of ​​the foreign matter is greater than or equal to the threshold Q, then directly perform a fault alarm, otherwise continue to step 4;

[0034] Step 4. Locate the black transverse penetration gap under the corbel hole;

[0035] Step 5. Position the corbel hole parts according to the posit...

specific Embodiment approach 2

[0041] Embodiment 2: This embodiment differs from Embodiment 1 in that: the high-definition grayscale full-vehicle image is captured by a camera or video camera, and the camera or video camera is mounted on a fixed device around the track of the truck.

specific Embodiment approach 3

[0042] Embodiment 3: The difference between this embodiment and Embodiment 1 is that in the first step, the image of the corbel hole area is intercepted from the acquired image, and the specific process is as follows:

[0043] According to the wheelbase information of the hardware and the position information of the corbel hole parts, the image of the corbel hole area is cut out from the acquired image.

[0044] In this embodiment, the area of ​​the component to be identified is obtained from the positioning algorithm framework according to prior knowledge such as the wheelbase information of the hardware and the position of the component, so as to reduce the amount of calculation and improve the speed of recognition.

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Abstract

The invention relates to a method for detecting foreign matter carried in a corbel hole of a railway freight car, which belongs to the technical field of image detection. The invention solves the problems of low detection accuracy and detection efficiency when the manual inspection method is used to judge whether foreign matter is carried in the corbel hole area. The invention uses fixed equipment to carry imaging equipment around the track of the truck to collect the linear array image data of the whole truck to be detected. Obtain a rectangular region containing the corbel hole and a small portion of the bogie below it from the full vehicle image. The corbel hole in the image is roughly horizontally centered. Through flipping and linear combination of the image, precise positioning of the semi-elliptical corbel hole, and follow-up identification of the relationship between the foreign object and its shadow in the image shooting, the final identification of the foreign object is confirmed. The pictures are used for alarm output to assist the station staff to quickly detect train components to ensure the safety of train operation. The invention can be applied to the technical field of image detection.

Description

technical field [0001] The invention belongs to the technical field of image detection, and in particular relates to a method for detecting foreign matter carried in a corbel hole of a railway freight car. Background technique [0002] When railway wagons are manually inspected, there is a possibility that some maintenance tools or parts of the car body may fall into the corbel holes. For a long time, vehicle inspectors have used manual inspection (that is, by viewing the images of passing vehicles) to judge whether there are foreign objects in the corbel hole area. The inspection work is very important, but a large number of image screenings make the vehicle inspectors in the work process Fatigue is extremely prone to occur in the process, and missed and wrong detections are prone to occur, making it difficult to guarantee the accuracy and high efficiency of detection. Therefore, it is necessary to adopt automatic identification in the fault detection of trucks. Contents...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00G06T7/62
CPCG06T7/0008G06T2207/10004G06T2207/30108G06T2207/30268G06T7/62
Inventor 燕天娇
Owner HARBIN KEJIA GENERAL MECHANICAL & ELECTRICAL CO LTD
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