CN112630414B - Fabric density measuring method - Google Patents
Fabric density measuring method Download PDFInfo
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- CN112630414B CN112630414B CN202011625793.8A CN202011625793A CN112630414B CN 112630414 B CN112630414 B CN 112630414B CN 202011625793 A CN202011625793 A CN 202011625793A CN 112630414 B CN112630414 B CN 112630414B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/36—Textiles
- G01N33/367—Fabric or woven textiles
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Abstract
The invention provides a fabric density measuring method, which comprises the following steps: step S1: fixing the fabric on a detection table; step S2: controlling the lifting mechanism to ascend to enable the first tension roller and the second tension roller to give certain tension to the fabric; step S3: acquiring a fabric image through a scanner; step S4: acquiring the number of yarns in an image area with a preset size based on a fabric image; step S5: calculating the fabric density; step S6: controlling the lifting mechanism to descend to enable the first tension roller to be positioned below the first clamping part; step S7: controlling the rotating platform to rotate for a certain angle; step S8: repeating step S2; step S9: and calculating the average value of the fabric density to finish the measurement. Compared with the prior art, the embodiment of the invention has the advantages that the rotary platform is arranged to rotate the first tension roller and the second tension roller, the fabric density test is carried out in a plurality of tension directions, the detection precision is improved, meanwhile, the arrangement of the rotary platform avoids manual adjustment of the fabric direction, and the detection efficiency is improved.
Description
Technical Field
The invention relates to the technical field of fabric density detection, in particular to a fabric density measuring method.
Background
Both warp and weft knitting are known as knits, in which crochet stitches are used to wind yarns into sets. After the fabric is woven and formed, density detection is needed. The number of warp yarns per unit length in the cross direction is referred to as the warp density and the number of weft yarns per unit length in the machine direction is referred to as the weft density, both collectively referred to as the fabric density. Has a great relationship with the weight, abrasion resistance, hand feeling and air permeability of the fabric. Therefore, measuring the fabric density and analyzing the fabric texture is an important test for assessing the quality of the fabric.
When the fabric density is measured, most fabrics are subjected to density measurement under the tension state of 0, and for fabrics used in some special occasions, a customer needs to perform fabric density detection under a certain tension when detecting.
Chinese patent publication no: CN102788792A discloses a device for detecting density of weft-knitted fabric based on image analysis, which includes a fabric tension device, a fabric image collecting device and weft-knitted fabric density detection software, and a certain tension is provided by the fabric tension device, but in the actual measurement process, the tension direction is not variable, for example, when tension is applied along the warp direction, weft density is affected to a certain extent, and when tension is applied along the weft direction, warp density is affected to a certain extent. This requires multiple changes in tension direction to average out to reduce errors.
In view of the above-mentioned drawbacks, the applicant has actively studied to create a fabric density measuring method, which is more practical.
Disclosure of Invention
In view of this, the invention provides a method for measuring fabric density, and aims to solve the technical problem that in the prior art, fabric density is inaccurate to detect in a micro-tension environment.
The invention provides a fabric density measuring method, which comprises the following steps:
step S1: fixing the fabric on a detection table;
step S2: controlling the lifting mechanism to ascend to enable the first tension roller and the second tension roller to give certain tension to the fabric;
step S3: acquiring a fabric image through a scanner;
step S4: acquiring the number of yarns in an image area with a preset size based on a fabric image;
step S5: calculating the fabric density according to the number of yarns in the image area with the preset size;
step S6: controlling the lifting mechanism to descend to enable the first tension roller to be positioned below the first clamping part;
step S7: controlling the rotating platform to rotate for a certain angle;
step S8: repeating steps S2 to S7;
step S9: and calculating the average value of the fabric density to finish the measurement.
Further, between the steps S3 and S4, the method further includes a step SA:
step SA: and preprocessing the fabric image, wherein the preprocessing comprises image conversion, filtering and denoising and contrast enhancement of the fabric image.
Further, in step S4, the obtaining the number of yarns in the preset size image area includes obtaining a first number of yarns in the warp direction and obtaining a second number of yarns in the weft direction.
Further, in step S5, the warp density is calculated according to the first number of yarns, and the weft density is calculated according to the second number of yarns.
Further, in step S1, the inspection station includes: the clamping device comprises a first clamping part, a second clamping part, a third clamping part and a fourth clamping part;
the first clamping portion, the second clamping portion, the third clamping portion and the fourth clamping portion are distributed at four corners of the fabric to clamp the fabric.
Further, in step S2, the first tension roller and the second tension roller are connected to the lifting mechanism through a base.
Further, in step S7, the rotating platform is fixed below the lifting mechanism to drive the lifting mechanism to rotate.
Compared with the prior art, the fabric density measuring method provided by the embodiment of the invention has the advantages that the rotary platform is arranged to rotate the first tension roller and the second tension roller, the fabric density is tested in a plurality of tension directions, the detection precision is improved, meanwhile, the arrangement of the rotary platform avoids manual adjustment of the fabric direction, and the detection efficiency is improved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.
Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic flow chart of a method for measuring fabric density according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a testing table according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the positions of the first tension roller and the second tension roller in the first state according to the embodiment of the present invention;
FIG. 4 is a schematic diagram of the positions of the first tension roller and the second tension roller in a second state according to the embodiment of the present invention;
reference numerals: 11. a first clamping portion; 12. a second clamping portion; 13. a third clamping portion; 14. a fourth clamping portion; 3. a first tension roller; 4. a second tension roller; 5. a base; 6. a lifting mechanism; 7. and rotating the platform.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure 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 disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1 to 4, it can be seen that the fabric density measuring method according to the embodiment of the present invention includes:
step S1: fixing the fabric on a detection table;
step S2: controlling the lifting mechanism 6 to rise to enable the first tension roller 3 and the second tension roller 4 to give a certain tension to the fabric;
step S3: acquiring a fabric image through a scanner;
step S4: acquiring the number of yarns in an image area with a preset size based on a fabric image;
step S5: calculating the fabric density according to the number of yarns in the image area with the preset size;
step S6: controlling the lifting mechanism 6 to descend so that the first tension roller 3 is positioned below the first clamping part 11;
step S7: controlling the rotary platform 7 to rotate for a certain angle;
step S8: repeating steps S2 to S7;
step S9: and calculating the average value of the fabric density to finish the measurement.
Compared with the prior art, the fabric density measuring method provided by the embodiment of the invention has the advantages that the rotating platform is arranged to rotate the first tension roller 3 and the second tension roller 4, the fabric density is tested in a plurality of tension directions, the detection precision is improved, meanwhile, the rotating platform is arranged, the manual adjustment of the fabric direction is avoided, and the detection efficiency is improved.
In this embodiment, between steps S3 and S4, step SA is further included:
step SA: and preprocessing the fabric image, wherein the preprocessing comprises image conversion, filtering and denoising and contrast enhancement of the fabric image.
In this embodiment, in step S4, the obtaining the number of the yarns in the image area with the preset size includes obtaining a first number of the yarns in the warp direction and obtaining a second number of the yarns in the weft direction.
In this embodiment, in step S5, the warp density is calculated according to the first number of yarns, and the weft density is calculated according to the second number of yarns.
In step S1, the inspection station includes: a first clamping portion 11, a second clamping portion 12, a third clamping portion 13, and a fourth clamping portion 14; the first clamping portion 11, the second clamping portion 12, the third clamping portion 13 and the fourth clamping portion 14 are distributed at four corners of the fabric to clamp the fabric.
In step S2, the first tension roller 3 and the second tension roller 4 are connected to the lifting mechanism 6 via the base 5.
In step S7, the rotating platform 7 is fixed below the lifting mechanism 6 to drive the lifting mechanism 6 to rotate.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (4)
1. A fabric density measurement method, comprising:
step S1: fixing the fabric on a detection table;
step S2: controlling the lifting mechanism (6) to ascend to ensure that the first tension roller (3) and the second tension roller (4) give certain tension to the fabric;
step S3: acquiring a fabric image through a scanner;
step S4: acquiring the number of yarns in an image area with a preset size based on a fabric image;
step S5: calculating the fabric density according to the number of yarns in the image area with the preset size;
step S6: controlling the lifting mechanism (6) to descend to enable the first tension roller (3) to be positioned below the first clamping part (11);
step S7: controlling the rotating platform (7) to rotate for a certain angle;
step S8: repeating steps S2 to S7;
step S9: calculating the average value of the fabric density to finish measurement;
the detection station includes: a first clamping part (11), a second clamping part (12), a third clamping part (13) and a fourth clamping part (14); the first clamping part (11), the second clamping part (12), the third clamping part (13) and the fourth clamping part (14) are distributed at four corners of the fabric to clamp the fabric;
the first tension roller (3) and the second tension roller (4) are connected with the lifting mechanism (6) through a base (5);
the first tension roller (3) and the second tension roller (4) are parallel;
the rotating platform (7) is fixed below the lifting mechanism (6) and used for driving the lifting mechanism (6) to rotate.
2. The fabric density measuring method according to claim 1, wherein between the steps S3 and S4, further comprising a step SA:
step SA: and preprocessing the fabric image, wherein the preprocessing comprises image conversion, filtering and denoising and contrast enhancement of the fabric image.
3. The fabric density measuring method of claim 1, wherein the step S4, acquiring the number of yarns in the image area with the preset size comprises acquiring a first number of yarns in the warp direction and acquiring a second number of yarns in the weft direction.
4. The fabric density measuring method according to claim 3, wherein in step S5, the warp density is calculated according to the first yarn number, and the weft density is calculated according to the second yarn number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011625793.8A CN112630414B (en) | 2020-12-30 | 2020-12-30 | Fabric density measuring method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011625793.8A CN112630414B (en) | 2020-12-30 | 2020-12-30 | Fabric density measuring method |
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| Publication Number | Publication Date |
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| CN112630414A CN112630414A (en) | 2021-04-09 |
| CN112630414B true CN112630414B (en) | 2022-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011625793.8A Active CN112630414B (en) | 2020-12-30 | 2020-12-30 | Fabric density measuring method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114719756B (en) * | 2022-03-17 | 2024-05-24 | 广州海关技术中心 | Method and system for measuring knitting density coefficient of knitted fabric |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202583071U (en) * | 2012-01-06 | 2012-12-05 | 青岛检验检疫技术发展中心 | Warp-and-weft density automatic analyzer for fabric |
| CN102788792A (en) * | 2012-03-31 | 2012-11-21 | 江南大学 | Device for measuring density of weft knitted fabric based on image analysis |
| CN103604937B (en) * | 2013-11-22 | 2015-06-10 | 青岛大学 | Fabric analysis system and method based on biaxial mechanical stretch processing |
| CN106127781A (en) * | 2016-06-30 | 2016-11-16 | 上海工程技术大学 | The measuring method of a kind of yarn dyed fabric density and device |
| CN109727230B (en) * | 2018-11-30 | 2023-04-28 | 西安工程大学 | Device and method for measuring surface quality of fluff fabric |
| DE102019004034A1 (en) * | 2019-06-07 | 2020-12-10 | Texmag Gmbh Vertriebsgesellschaft | Method for detecting a tensile stress of a rotating belt |
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