Foaming cavity detection method and detection system based on image comparison
A technology of void detection and image comparison, applied in the foaming field, can solve the problems of entering the market, missed inspection, etc., and achieve the effect of not easy to miss inspection, high detection efficiency, and accurate identification.
Pending Publication Date: 2022-05-06
GREE ELECTRICAL APPLIANCE WUHU +1
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Problems solved by technology
This method solves the problem that there is a certain proportion of missed inspections in the prior art when checking the foaming quality of refrigerators by manual spot checks.
However, this method judges the quality of foaming by detecting whether the quality of cavitation is greater than a preset threshold. This detection method is likely to cause refrigerators with certain foaming and cavitation to be regarded as good products and enter the market, so it still needs to be improved.
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[0044] Preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
[0045] The terminology used in the present invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used herein and in the appended claims, the singular forms "a", "the" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any and all possible combinations of...
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The invention provides a foaming cavity detection method and detection system based on image contrast, and belongs to the technical field of foaming, the method specifically comprises the following steps: collecting a foaming layer thermal imaging image of a qualified product as a reference image; collecting a thermal imaging real-time image of the foaming layer of the to-be-detected product; comparing the real-time image with the reference image, and judging whether the foaming layer of the to-be-detected product is qualified or not according to a comparison result; and when the detected foaming layer of the to-be-detected product is unqualified, processing the unqualified product. According to the method, the foaming quality of the product foaming layer is detected based on an image comparison method, identification is accurate, detection efficiency is high, accuracy is high, and missing detection is not prone to occurring.
Description
technical field [0001] The invention relates to the field of foaming technology, in particular to a method and system for detecting foaming cavities based on image comparison. Background technique [0002] With the development of the economy, water heaters have entered thousands of households. The water heater tank includes an outer shell and an inner tank, and foaming material is filled between the outer shell and the inner tank. The foaming material can provide the water heater tank with good specific strength, dimensional stability, bonding performance and thermal insulation performance. Occasionally, the foaming material may not be properly foamed during the manufacturing process, resulting in foaming cavities. In the prior art, manual knocking is usually used to detect the cavity of the foaming material between the inner tank and the outer shell of the water heater tank. However, this method has poor detection reliability and is prone to missed detection. [0003] Pri...
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IPC IPC(8): G01N25/72B07C5/34B07C5/36
CPCG01N25/72B07C5/34B07C5/36
Inventor 唐朝强许勇崔拯庶赵晓博徐蒙蒙田晓民
Owner GREE ELECTRICAL APPLIANCE WUHU