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Yarn Detection Method Based on Graph Similarity Comparison

A detection method and similar technology, applied in the direction of measuring device, optical testing defect/defect, textile and papermaking, etc., can solve the problems of easy interference, narrow detection area, high installation requirements, and achieve reliable work, simple principle, environmental protection Effects of insensitivity to changes in lighting

Active Publication Date: 2022-02-01
宁夏恒丰瑞斯特科技有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

This method has the advantages of simple principle and low cost, but the gain of the amplifier circuit is very large, it is easy to be interfered, and the detection area is very narrow, which requires high installation

Method used

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  • Yarn Detection Method Based on Graph Similarity Comparison

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Embodiment Construction

[0014] Now in conjunction with accompanying drawing, the present invention will be further described:

[0015] refer to figure 1 -2. A yarn detection method based on graphic similarity comparison, which includes a U-shaped casing and an electronic control device inside the casing. A processor, an infrared emitting unit 1 and an image sensor 2 connected to the processor, and an infrared filter 3 is arranged on the image sensor 2 .

[0016] The power supply circuit converts the input power level and stabilizes the voltage to provide power for other circuits.

[0017] The image sensor 2 is configured as a CCD linear image sensor or a CMOS linear image sensor sensitive to infrared rays, and the processor can read image data as required.

[0018] The infrared filter 3 can filter out light other than infrared light, which can greatly improve environmental adaptability and avoid interference from external light sources. In order to enhance the clarity and contrast of yarn imaging,...

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Abstract

The invention discloses a yarn detection method based on image form recognition, which includes a casing and an electronic control device inside the casing, the electronic control device includes a power supply circuit, a processor, an infrared emitting unit connected to the processor, and an electronic control device. The image sensor, the processor is used to realize the method for judging the state of the yarn, and its steps are: (1), every fixed period T, the processor collects the image data output by the image sensor f t (x, y); (2), using the binarization algorithm, the image data f t (x,y) is binarized to get y t (x,y); (3), calculate the current binary function y t (x,y) and the last sampled binary function y t‑1 (x, y) at different offset i, the sum of the absolute value of the difference R i ; (4), compare R i The minimum value in R min , which is a binary function y t (x,y) and y t‑1 (x, y) similarity; (5), when R min When greater than or equal to the preset threshold K, it is determined that the yarn is in motion; when R min When it is less than the preset threshold K, it is determined that the yarn is in a static state.

Description

technical field [0001] The invention relates to a yarn detection method based on graph similarity comparison, which belongs to the technical field of textile electronics. Background technique [0002] Yarn is the main raw material or even the only component of clothing, so the quality of the yarn or the state of the production process determines the quality of the clothing. For example, seamless underwear machines and socks machines, if a group of yarns are broken or lack of yarns, if they are not found in time, the whole garment will be scrapped. Therefore, yarn state detection can effectively reduce the defective rate, improve production efficiency, and reduce production costs. The currently used yarn state sensor uses a differential infrared photosensitive diode for detection. This method has the advantages of simple principle and low cost, but the gain of the amplifying circuit is very large, it is easy to be interfered, and the detection area is very narrow, which req...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04B35/12D04B35/14G01N21/88G01N21/95
CPCD04B35/12D04B35/14G01N21/95G01N21/8851G01N2021/8887
Inventor 刘瑜
Owner 宁夏恒丰瑞斯特科技有限公司
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