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A method for detecting that appearance defect on the top of a lamp holder of a bayonet type automobile bulb

A technology of appearance defects and detection methods, which is applied in image data processing, instruments, calculations, etc., can solve problems such as low efficiency, high labor intensity, and damage to lamp ears, and achieve stable and reliable systems, save human resources, and high detection accuracy Effect

Pending Publication Date: 2019-03-29
XIANGTAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The appearance defects at the top of the bayonet-type automobile bulb lamp cap mainly include defects in the top tin, dirty top, missing lamp lugs, crushed lamp lugs, and bad angles of the lamp lugs, etc. The solder in the central area of ​​the glass is not tinned locally or the amount of tin is insufficient; the top dirt can be divided into white dirt and black dirt, usually appearing on black glass and its outer ring; missing lamp lugs means that one or all lamp lugs are missing , The defect of lamp ear crushing means that the lamp ear is damaged; the defect of lamp ear turning means that the angle between the left and right lamp ear and the center line of the lamp head is not good
This method has high labor intensity, low efficiency, strong subjectivity and high error detection rate
Due to the lag in quality inspection and analysis, it is also difficult to effectively optimize the production process of bayonet type automotive bulbs online

Method used

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  • A method for detecting that appearance defect on the top of a lamp holder of a bayonet type automobile bulb
  • A method for detecting that appearance defect on the top of a lamp holder of a bayonet type automobile bulb
  • A method for detecting that appearance defect on the top of a lamp holder of a bayonet type automobile bulb

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Embodiment Construction

[0045] The present invention is described by taking the bayonet type automobile lamp of model P21WS as an example. In the embodiment, pixels are used as the length sheet, and a camera with a resolution of 640×480 is used to obtain the detection area image at the top of the lamp head. The defect detection area map is as follows figure 1 (a), figure 1 As shown in (c), the top tin defect detection area is the top tin area A in the figure; the top dirty defect detection area is the black glass area B and the black glass outer ring area C in the figure; the lamp lug detection area is the lamp lug area in the figure Ear detection area D; binding figure 2 Method flowchart, the specific implementation steps of the present invention are as follows:

[0046] S100. Positioning of the top of the lamp head:

[0047] S101. Use the method based on the maximum information entropy to remove the background from the image I obtained by the top camera, highlighting the outline of the top of t...

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Abstract

The invention provides a method for detecting the appearance defect on the top of a lamp holder of a bayonet type automobile. Aiming at three kinds of typical lamp cap top appearance defects, namely,tin defect on lamp cap top, dirt on lamp cap top and lamp ear defect, the method combines image processing technology, sets algorithms respectively to carry out inspection, and realizes automatic detection of appearance defects on lamp cap top of bayonet type automobile bulb. The method has the advantages that the appearance defect detection on the top of the bayonet lamp holder of the automobilebulb can be automatically completed, the detection speed is fast, and the recognition rate is high.

Description

technical field [0001] The invention relates to an automatic detection technology for the appearance quality of a light bulb, in particular to a detection method for the appearance defect at the top of a bayonet-type automobile light bulb cap. Background technique [0002] Bayonet type car lights occupy a larger market share and are widely used due to their safety, convenience, and stability compared with screw-type bulbs. Due to the complexity of the light bulb structure and the precision limitation of the mechanical control system, various defects inevitably appear in the light bulb products. Bulb defects are divided into functional defects and appearance defects. Functional defects mainly refer to defects that affect the function of the bulb, such as voltage exceeding the limit, current exceeding the limit, the bulb is not bright or the brightness is not enough. Bulb appearance defects can be divided into appearance defects at the top of the lamp cap and appearance defe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T7/13G06T7/62
CPCG06T7/0002G06T7/13G06T7/62
Inventor 朱江曾艳余洪山段峰劳永革许海霞徐雁冰李银莹
Owner XIANGTAN UNIV
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