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Yarn state detection method based on projection region statistics

A projection area and state detection technology, applied in textiles, papermaking, knitting, etc., can solve the problems of easy interference, narrow detection area, large gain of amplifier circuit, etc., and achieve the effect of reliable operation and simple principle.

Inactive Publication Date: 2020-04-24
HANGZHOU JINGYI INTELLIGENT SCI & TECH
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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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Yarn state detection method based on projection region statistics

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Embodiment Construction

[0015] Now in conjunction with accompanying drawing, the present invention will be further described:

[0016] refer to figure 1 -2. A yarn state detection method based on projection area statistics, a U-shaped casing, and an electronic control device arranged inside the casing, the electronic control device includes a power circuit for supplying power, and a circuit for computing 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 .

[0017] The power supply circuit converts the input power level and stabilizes the voltage to provide power for other circuits.

[0018] 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.

[0019] The infrared filter 3 can filter out light other than infrared light, which can greatly improve environmental adaptability and avoid in...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a yarn state detection method based on projection region statistics. A housing and an electronic control device arranged inside the housing are arranged; the electronic controldevice comprises a power supply circuit for providing a power supply, a processor for carrying out operation processing, and an infrared emission unit and an image sensor which are connected with theprocessor; an infrared filter is arranged on the image sensor; the infrared emission unit is arranged right above the image sensor; and an internal setting yarn state identification method of the processor comprises the steps of: at intervals of a fixed period T, by the processor, acquiring image data ft (x, y) output by the image sensor; (2) carrying out binarization processing on the image dataft (x, y) by adopting a binarization algorithm so as to obtain a binary function yt (x, y); (3) calculating a projection region size St of the binary function yt (x, y); and (4) comparing the projection region sizes St and St-1, when an absolute value of a difference between St and St-1 is greater than or equal to a preset threshold K, determining that yarns are in a moving state, or, determiningthat the yarns are in a static state.

Description

technical field [0001] The invention relates to a yarn state detection method based on projection area statistics, which belongs to the technical field of textile electronics. Background technique [0002] In the textile field, the seamless underwear machine can completely weave a piece of clothing without human intervention, so it has high work efficiency and greatly reduces production costs, so it is widely used. Seamless underwear machines generally use multiple groups or even more than ten groups of yarns for weaving. No matter how many groups of yarns are used, each group of yarns is very important, even if a group of yarns is broken or lacking yarns, the currently spun clothes will be scrapped. Therefore, monitoring the condition of the yarn is essential. 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 l...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D04B35/10
CPCD04B35/10
Inventor 不公告发明人
Owner HANGZHOU JINGYI INTELLIGENT SCI & TECH
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