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A detection device and image recognition method for seat belt buckle size and surface defects

A technology of a seat belt buckle and a detection device, which is applied in the detection field, can solve the problems that the seat belt buckle cannot be automated, and achieves the effect of solving the automation

Active Publication Date: 2022-05-27
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a detection device and image recognition method for seat belt buckle size and surface defects, so as to solve the problem that the existing seat belt buckle detection cannot be automated

Method used

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  • A detection device and image recognition method for seat belt buckle size and surface defects
  • A detection device and image recognition method for seat belt buckle size and surface defects
  • A detection device and image recognition method for seat belt buckle size and surface defects

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Experimental program
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Embodiment 1

[0042] see Figure 1 to Figure 6 , in one embodiment, a detection device for the size and surface defects of a seat belt buckle, including a front detection platform 26, a back detection platform 27, a feeding part, a front detection part, a turning part, a back detection part, an eddy current detection part, A first sorting unit, a second sorting unit, and a control unit.

[0043] in,

[0044] Both the feeding part and the front detection part are arranged on the front detection platform 26 . The feeding part is used for feeding and conveying the seat belt buckle to be tested to the front detection part, and the front detection part is used to detect the front of the seat belt buckle to be tested and convey it to the turning part.

[0045] The inversion part is arranged between the front detection platform 26 and the back detection platform 27, and is used for receiving and inverting the seat belt buckle conveyed by the front detection part, and conveying it to the rear det...

Embodiment 2

[0067] An image recognition method of the present invention is applied to the industrial camera 11 in the above-mentioned first embodiment, and the steps are as follows:

[0068] S1: Create a standard seat belt buckle shape template.

[0069] S2: The industrial camera 11 acquires an image, and preprocesses the image.

[0070]S3: Perform binary segmentation on the preprocessed image to obtain foreground and background, and then perform connected area detection to confirm the gray-scale mutation in the image.

[0071] S4: Match the image in S3 with the shape template, find the target area to be detected and divide it into blocks, analyze the gray value and pixel point features of each block, extract image blocks with large pixel differences, and identify them as defective pixels group.

[0072] The specific steps of the image recognition method are as follows: the industrial camera 11 collects the seat belt buckle image, first enhances the collected image, then uses median fil...

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Abstract

The invention discloses a detection device and an image recognition method for the size and surface defect of a safety belt buckle. By setting a feeding part and a front detection part on the front detection platform, a back detection part, an eddy current detection part, a first The sorting unit, the second sorting unit, and the flipping part is set between the front detection platform and the back detection platform, and is controlled by the control part; the safety belt buckle is loaded from the feeding part to the front detection part for detection, and is tested by the The front detection part is sent to the flipping part for flipping and sent to the back detection platform for sorting by the first sorting unit, and the normal seat belt buckles are sent to the back detection part for detection and sorted by the second sorting unit , the normal seat belt buckles are transported to the eddy current testing department for testing, and are sorted by the eddy current testing department to finally get the seat belt buckles that pass the front inspection, back inspection and eddy current inspection. The problem that the existing seat belt buckle detection cannot be automated is solved.

Description

technical field [0001] The invention belongs to the technical field of detection, and in particular relates to a detection device and an image recognition method for the size and surface defects of a seat belt buckle. Background technique [0002] Seat belt buckle is an indispensable safety protection component in the process of car driving. Ensuring the quality of seat belt buckle is the last safety barrier to protect the driver. If the size of the seat belt buckle is out of tolerance or there are defects such as cracks and pits on the surface, it will either lead to difficulty in plugging and unplugging, or in the long-term plugging and use process, the crack defects gradually extend from the outer surface to the interior and cause breakage, which will cause damage to the driver. bring security risks. [0003] At present, the surface defects and size detection of seat belt buckles are mainly identified by the naked eye. Due to the low efficiency of manual detection, the r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B07C5/02B07C5/342B07C5/344B07C5/36G01D21/02
CPCB07C5/02B07C5/3422B07C5/344B07C5/362G01D21/02
Inventor 侯怀书方建飞陆顶于晓东张毅罗志祥
Owner SHANGHAI INST OF TECH