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Detection method of foreign objects in triangular holes of railway wagons

A foreign object detection, railway freight car technology, applied in biological neural network model, image data processing, image enhancement and other directions, can solve the problems of low accuracy, low efficiency of foreign objects in leakage holes, etc., to reduce labor, shorten network training time, The effect of improving stability and accuracy

Active Publication Date: 2020-07-31
HARBIN KEJIA GENERAL MECHANICAL & ELECTRICAL CO LTD
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AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problems of low efficiency and low accuracy in the current detection of foreign matter in leakage holes

Method used

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  • Detection method of foreign objects in triangular holes of railway wagons
  • Detection method of foreign objects in triangular holes of railway wagons
  • Detection method of foreign objects in triangular holes of railway wagons

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Experimental program
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specific Embodiment approach 1

[0044] Specific implementation mode one: refer to figure 1 To describe this embodiment in detail,

[0045]This embodiment is a method for detecting foreign matter in a triangular hole of a railway freight car, which specifically includes the following steps:

[0046] 1. Line array image collection

[0047] Cameras or video cameras are installed on the fixed equipment around the truck tracks to take pictures of the moving trucks and obtain high-definition grayscale images of the whole truck, which are recorded as the whole truck image.

[0048] Due to various interference factors, there are large changes in the images of the triangular hole. In order to enhance the robustness, in the process of collecting image data, it is necessary to obtain images under the influence of various conditions and factors.

[0049] 2. Coarse positioning

[0050] According to the prior knowledge such as the wheelbase information of the hardware and the position of the triangular hole, the trian...

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Abstract

The invention discloses a method for detecting foreign matter in a triangular hole of a railway freight car, belonging to the technical field of freight train detection. The invention aims to solve the problems of low efficiency and low accuracy in the current detection of foreign objects in leakage holes. The present invention first collects images and extracts the images containing the triangular hole area, constructs a sample data set, and the sample data set includes two: a sample data set for locating the triangular hole position and a sample data set for calibrating the triangular hole foreign matter; training the triangular hole positioning and segmentation respectively Network and triangular hole foreign object segmentation network; during the detection process, the real passing image is collected and the image of the triangular hole part is extracted, and the image of the triangular hole part to be detected is input into the triangular hole foreign object segmentation network to detect whether there is a foreign object; if there is a foreign object, the The image of the triangular hole to be detected is input into the triangular hole positioning and segmentation network to locate the triangular hole area, and then judge whether there is a foreign object in the triangular hole. It is mainly used for foreign object detection in triangular holes of railway wagons.

Description

technical field [0001] The invention relates to a method for detecting foreign matter in a triangular hole. The invention belongs to the technical field of freight train detection. Background technique [0002] The triangular holes on the railway freight car are two large hollows on the upper part of the railway freight car bogie, which are shaped like triangles. As shown in Fig. 2(a) and Fig. 2(b), the two triangular areas are the triangular holes of the railway freight car bogie. Foreign matter may enter the triangular hole during maintenance or when the train is running, and a large foreign matter may be partly mounted in the hole, while the other part overflows to cover some other important parts on the bogie, such as springs, wheels, etc. Fault detection thus affects driving safety; or foreign matter may be transferred from the triangular hole to the leaking hole connected to it close to the train track and get stuck, and hard foreign matter may damage the track. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/20G06K9/46G06T7/00G06N3/04
CPCG06T7/0004G06T2207/10004G06T2207/20081G06T2207/20084G06T2207/30252G06V10/22G06V10/40G06N3/045
Inventor 燕天娇
Owner HARBIN KEJIA GENERAL MECHANICAL & ELECTRICAL CO LTD