CN202119724U - Charge coupled device (CCD) detecting device of automatic cloth inspecting machine - Google Patents
Charge coupled device (CCD) detecting device of automatic cloth inspecting machine Download PDFInfo
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- CN202119724U CN202119724U CN2011201927242U CN201120192724U CN202119724U CN 202119724 U CN202119724 U CN 202119724U CN 2011201927242 U CN2011201927242 U CN 2011201927242U CN 201120192724 U CN201120192724 U CN 201120192724U CN 202119724 U CN202119724 U CN 202119724U
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Abstract
A charge coupled device (CCD) detecting device of an automatic cloth inspecting machine comprises a CCD camera, guiding running rollers and a light source. Cloth is horizontally arranged between the two guiding running rollers, the light source comprises a main light source and a back light source which is arranged on one side of the cloth, and the CCD camera is arranged on the other side of the cloth. The CCD camera and the back light source are oppositely arranged, and an inspecting area is arranged at an intersection point of the cloth and a CCD camera main optical axis. The main light source is arranged between the cloth and the CCD camera, an inclined angle between a connecting line from the main light source to the inspecting area and the plane of the cloth ranges from 20 degrees to 70 degrees, and the distance between the main light source and the cloth is smaller than that between the CCD camera and the cloth. Detecting precision and defect relevance ratio are effectively improved. The detecting speed of the technical scheme can reach to higher than 150 meter/minute, the defect relevance ration can reach to higher than 96%, and false detection ratio is lower than 1%, so that false detection can hardly happen.
Description
Technical field
The utility model relates to a kind of automatic cloth inspecting machine, the weave cotton cloth CCD pick-up unit of automatic cloth inspecting machine of flaw of specifically a kind of detection.
Background technology
Along with the development of the automatically-monitored level of process of textile production and the raising of yarn and fabric quality, and the minimizing of the serial problem that in weaving process, produces by stress of yarn, perching also becomes an important step of improving the quality of products.The purpose of perching is the fault that detects fabric, and marks.The traditional fabric inspection method of textile industry is artificial perching, because artificial perching adopts cloth inspecting machine of a people that the fabric of producing is examined entirely, therefore is adapted to various fabrics.But artificial perching detection speed is slower, generally at 5-20 meters/minutes, can detect 200 faults in 1 hour at most.In addition, only energy can be very concentrated in 20-30 minutes in artificial perching, surpasses the back and be prone to take place omission.Even the most skilled perching workman also can only find the fault greater than 70%.Because artificial perching can not meet the demands to the reliability and the repeatability of fault check, along with improving constantly of loom production, the high-speed appearance of robotization perching system reliably becomes the developing direction of perching work.In existing robotization perching equipment, adopting the CCD high-speed camera to detect is the developing direction of present main flow.But because the CCD detection is bigger to the dependence of the surface brightness of weaving cotton cloth, lighting source is provided with unreasonable meeting greatly influences the precision that CCD detects, and influences the recall rate of fault.Existing C CD perching equipment mostly is provided with radiation source below weaving cotton cloth, adopt the ccd video camera that is arranged on the top of weaving cotton cloth to detect.The whole light sources of this set mode directly see through to weave cotton cloth and are incident upon on the ccd video camera, can't effectively differentiate fault, and recall rate is very low, generally has only 75-80%.
The utility model content
The utility model technical matters to be solved provides a kind of CCD pick-up unit of automatic cloth inspecting machine, can effectively improve the recall rate of the fault of weaving cotton cloth, and detection speed is fast.
The utility model is to solve the problems of the technologies described above the technical scheme that is adopted to be: a kind of CCD pick-up unit of automatic cloth inspecting machine, and comprise ccd video camera, draw cloth deflector roll and light source, cloth is horizontally set on two and draws between the cloth deflector roll; Light source comprises main light source and backlight; Backlight is arranged on cloth one side, and ccd video camera is arranged on the cloth opposite side, and ccd video camera and backlight are oppositely arranged; The intersection point place of cloth and ccd video camera primary optical axis is a detection zone; Main light source is arranged between cloth and the ccd video camera, and main light source is 20-70 ° to the line of detection zone and the angle on cloth plane, and the distance between main light source and cloth is less than the distance between ccd video camera and cloth.
Described backlight is arranged on the cloth below, and ccd video camera is arranged on the cloth top, and ccd video camera and backlight vertically are oppositely arranged, and main light source is arranged on the detection zone oblique upper.
Described main light source and backlight are equipped with reflection shield, and the concave surface of reflection shield is towards detection zone.
Described main light source and backlight are strip along the Width of cloth and are horizontally disposed with.
Distance between described main light source and cloth be between ccd video camera and cloth distance 1/5-3/4.
Said main light source is 35-55 ° to the line of detection zone and the angle on cloth plane.
The beneficial effect of the utility model is: in the present technique scheme; Main light source is used to illuminate the cloth surface; The backlight of cloth below plays the auxiliary effect of illuminating, and the diffraction that this set mode produces in the time of can avoiding the light of cloth below to pass the cloth hole is to the influence of accuracy of detection.Main light source is arranged on the oblique upper of cloth detection zone; With certain irradiating and detecting district, angle of inclination, this radiation modality is compared with the light source vertical irradiation, and cloth lines lines is more clear in the photographic images; Be easy to analyze the identification fault, effectively improved accuracy of detection and fault recall rate.Present technique scheme detection speed can reach more than 150 meters/minute, and the fault recall rate can reach more than 96%, and false drop rate is lower than 1%, can occur the situation of flase drop hardly.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Mark among the figure: 1, ccd video camera, 2, draw the cloth deflector roll, 3, main light source, 4, backlight, 5, cloth, 6, reflection shield, 7, casing, 8, marking device.
Embodiment
As shown in the figure, a kind of CCD pick-up unit of automatic cloth inspecting machine comprises ccd video camera 1, draws cloth deflector roll 2 and light source.Ccd video camera 1, draw cloth deflector roll 2 and light source is arranged in the casing 7.Cloth 5 is arranged on two and draws between the cloth deflector roll 2; Light source comprises main light source 3 and backlight 4; Backlight 4 is arranged on cloth 5 one sides, and ccd video camera 1 is arranged on cloth 5 opposite sides, and ccd video camera 1 is oppositely arranged with backlight 4; Cloth 5 is a detection zone with the intersection point place of ccd video camera 1 primary optical axis, and main light source 3 is arranged between cloth 5 and the ccd video camera 1.In order to reduce the influence of surround lighting to the shooting clear degree; Optimal way is: cloth 5 is horizontally set on two and draws between the cloth deflector roll 2; By drawing cloth deflector roll 2 cloth 5 is flattened, and cloth 5 is fed forward with certain speed, to carry out continuous detecting through the guiding of drawing cloth deflector roll 2.Illumination when light source is used for ccd video camera 1 shooting cloth image; Comprise main light source 3 and backlight 4; Backlight 4 is arranged on cloth 5 belows, and ccd video camera 1 is arranged on cloth 5 tops, and ccd video camera 1 vertically is oppositely arranged with backlight 4; Cloth 5 is a detection zone with the intersection point place of ccd video camera 1 primary optical axis, and main light source 3 is arranged on the detection zone oblique upper.Main light source 3 is 20-70 ° to the line of detection zone and the angle on cloth 5 planes, and promptly the θ angle shown in Fig. 1 is 20-70 °.The distance that main light source 3 and cloth are 5 is less than the distance of 5 of ccd video camera 1 and clothes.
Described main light source 3 is equipped with reflection shield 6 with backlight 4, and the concave surface of reflection shield 6 is towards detection zone, makes ray cast that light source sends to cloth, not only improved the light efficiency of light source, and the shooting of avoiding influence because of light source irradiation ccd video camera 1 forms images.
Described main light source 3 and backlight 4 are strip along the Width of cloth 5 and are horizontally disposed with.Main light source 3 can use fluorescent tube with backlight 4, also can use the LED illuminating lamp.Illuminate the belt-like zone of cloth Width through light source; And pass through the ccd video camera photographic images after Computer Analysis picks out defect position, by the marking device 8 that is provided with on the computer control cloth working direction; When fabric defects moves to the position of marking device 8; On cloth, make a mark, show the position of fault, so that subsequent treatment.
The distance that described main light source 3 and cloth are 5 is 1/5-3/4 of ccd video camera 1 and 5 distances of cloth.Select the appropriate illumination distance can effectively improve the shooting clear degree, thereby improve accuracy of detection.Optimal way is that the distance of 5 of main light source 3 and clothes is 1/4-2/3 of ccd video camera 1 and 5 distances of cloth.
Main light source 3 is the key factors that influence main light source 3 throw lights reflection angle on cloth to the line of detection zone and the angle theta on cloth 5 planes; Suitable θ angle combines the main light source 3 and the selection of ccd video camera 1 aspect ratio can effectively improve accuracy of detection; Preferred 35-55 ° of θ angle, the recall rate of fabric defects reaches more than 98%.
Claims (6)
1. the CCD pick-up unit of an automatic cloth inspecting machine; Comprise ccd video camera (1), draw cloth deflector roll (2) and light source; It is characterized in that: cloth (5) is arranged on two and draws between the cloth deflector roll (2), and light source comprises main light source (3) and backlight (4), and backlight (4) is arranged on cloth (5) one sides; Ccd video camera (1) is arranged on cloth (5) opposite side; Ccd video camera (1) is oppositely arranged with backlight (4), and cloth (5) is a detection zone with the intersection point place of ccd video camera (1) primary optical axis, and main light source (3) is arranged between cloth (5) and the ccd video camera (1); Main light source (3) is 20-70 ° to the line of detection zone and the angle on cloth (5) plane, and the distance between main light source (3) and cloth (5) is less than the distance between ccd video camera (1) and cloth (5).
2. the CCD pick-up unit of a kind of automatic cloth inspecting machine as claimed in claim 1; It is characterized in that: described cloth (5) is horizontally set on two and draws between the cloth deflector roll (2); Backlight (4) is arranged on cloth (5) below; Ccd video camera (1) is arranged on cloth (5) top, and ccd video camera (1) vertically is oppositely arranged with backlight (4), and main light source (3) is arranged on the detection zone oblique upper.
3. the CCD pick-up unit of a kind of automatic cloth inspecting machine as claimed in claim 1, it is characterized in that: described main light source (3) and backlight (4) are equipped with reflection shield (6), and the concave surface of reflection shield (6) is towards detection zone.
4. the CCD pick-up unit of a kind of automatic cloth inspecting machine as claimed in claim 1 is characterized in that: described main light source (3) and backlight (4) are strip along the Width of cloth (5) and are horizontally disposed with.
5. the CCD pick-up unit of a kind of automatic cloth inspecting machine as claimed in claim 1 is characterized in that: the distance between described main light source (3) and cloth (5) be between ccd video camera (1) and cloth (5) distance 1/5-3/4.
6. the CCD pick-up unit of a kind of automatic cloth inspecting machine as claimed in claim 1, it is characterized in that: said main light source (3) is 35-55 ° to the line of detection zone and the angle on cloth (5) plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201927242U CN202119724U (en) | 2011-06-09 | 2011-06-09 | Charge coupled device (CCD) detecting device of automatic cloth inspecting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201927242U CN202119724U (en) | 2011-06-09 | 2011-06-09 | Charge coupled device (CCD) detecting device of automatic cloth inspecting machine |
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| Publication Number | Publication Date |
|---|---|
| CN202119724U true CN202119724U (en) | 2012-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201927242U Expired - Fee Related CN202119724U (en) | 2011-06-09 | 2011-06-09 | Charge coupled device (CCD) detecting device of automatic cloth inspecting machine |
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| Country | Link |
|---|---|
| CN (1) | CN202119724U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221558A (en) * | 2011-06-09 | 2011-10-19 | 洛阳方智测控股份有限公司 | Charge coupled device (CCD) detection device for automatic burling machine |
| CN104766314A (en) * | 2015-03-27 | 2015-07-08 | 上海和鹰机电科技股份有限公司 | Fabric reading machine and method with defect marking function |
| CN107192634A (en) * | 2017-05-22 | 2017-09-22 | 绍兴众舟科技有限公司 | A kind of fabric surface density assay method and fabric surface density measurement system |
| TWI791971B (en) * | 2020-04-08 | 2023-02-11 | 財團法人紡織產業綜合研究所 | Cloth inspection machine |
-
2011
- 2011-06-09 CN CN2011201927242U patent/CN202119724U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221558A (en) * | 2011-06-09 | 2011-10-19 | 洛阳方智测控股份有限公司 | Charge coupled device (CCD) detection device for automatic burling machine |
| CN104766314A (en) * | 2015-03-27 | 2015-07-08 | 上海和鹰机电科技股份有限公司 | Fabric reading machine and method with defect marking function |
| CN104766314B (en) * | 2015-03-27 | 2018-07-10 | 长园和鹰智能科技有限公司 | Fabric reading machine and fabric read method with flaw mark function |
| CN107192634A (en) * | 2017-05-22 | 2017-09-22 | 绍兴众舟科技有限公司 | A kind of fabric surface density assay method and fabric surface density measurement system |
| TWI791971B (en) * | 2020-04-08 | 2023-02-11 | 財團法人紡織產業綜合研究所 | Cloth inspection machine |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20170609 |