CN107192344A - Thickness detecting system based on real-time video information - Google Patents

Thickness detecting system based on real-time video information Download PDF

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Publication number
CN107192344A
CN107192344A CN201710442663.2A CN201710442663A CN107192344A CN 107192344 A CN107192344 A CN 107192344A CN 201710442663 A CN201710442663 A CN 201710442663A CN 107192344 A CN107192344 A CN 107192344A
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CN
China
Prior art keywords
cloth
detected
thickness
plate
transfer roller
Prior art date
Application number
CN201710442663.2A
Other languages
Chinese (zh)
Inventor
方引
杨洋
Original Assignee
成都尽知致远科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 成都尽知致远科技有限公司 filed Critical 成都尽知致远科技有限公司
Priority to CN201710442663.2A priority Critical patent/CN107192344A/en
Publication of CN107192344A publication Critical patent/CN107192344A/en

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical means
    • G01B11/02Measuring arrangements characterised by the use of optical means for measuring length, width or thickness
    • G01B11/06Measuring arrangements characterised by the use of optical means for measuring length, width or thickness for measuring thickness, e.g. of sheet material

Abstract

In order to accurately and reliably obtain thickness information of the cloth before and after each processing step, the invention discloses a kind of thickness detecting system based on real-time video information, including:Delivery unit, for uniaxially transmitting cloth to be detected;Spot light unit, is irradiated for the side to cloth to be detected;Live fluoroscopic video acquisition unit, the live fluoroscopic video of the opposite side for obtaining cloth to be detected;Cloth Thickness sensitivity unit, the thickness for obtaining cloth to be detected based on the live fluoroscopic video.According to the present invention, the cloth thickness for meeting required precision is able to detect that in case of a dynamic basis;And can be set by dexterously using the reference plate on transfer roller, accurate noncontact cloth Thickness sensitivity is realized with cheap cost.

Description

Thickness detecting system based on real-time video information

Technical field

The invention belongs to the real-time thickness detection technique field towards object in movement, it is based on more particularly, to one kind The thickness detecting system of real-time video information.

Background technology

The pattern of printing and dyeing or spray printing is such as on raising with people to the requirement of the aesthetics and complexity of cloth decorative pattern, cloth Really there is processing to omit (for example, forgetting to carry out a certain printing and dyeing or spray printing processing to certain region) or reprocess (for example, to certain area Domain has mistakenly carried out multiple identical, unnecessary printing and dyeing or spray printing processing), the very big wave of raw material and man-hour will be caused Take, cause the reduction of cloth quality or even be changed into defective work.Therefore, step in the prior art desirably to each handling process Suddenly the thickness information of cloth can be known in real time.In fact, this expectation can not only bring the solution to above mentioned problem Certainly, and can help the producer improve cloth production technology and modified technique control quality.

Through retrieval, in the prior art, the thickness of cloth is generally detected using static method.However, under static state, The process for producing line of cloth will be forced to stagnate, and substantial amounts of product line run time can be also taken even if by the way of sampling.Cause This, there is the contradiction between detection efficiency and accuracy of detection in cloth thickness detecting method of the prior art.

For dynamic testing method, retrieved through applicant, detection object of the prior art generally all has necessarily firm Property, such as Application No. CN200680002018 application for a patent for invention discloses a kind of online finger gauge (OLTG) and method, The thickness of the glass substrate moved can be measured.In preferably embodiment, the OLTG includes Y- guiders and steady Order member, is respectively used to catch the glass substrate moved and stabilizes it.The OLTG also includes containing LASER Light Source and detection The laser device of device.Preceding surface emitting light beam of the LASER Light Source towards the glass substrate moved.The detector receives two Shu Guang, one is by the front surface reflection of glass substrate moved, the glass substrate of another beam just by moving Rear surface reflection.The OLTG also includes processor, and the processor two-beam that is received by detector of analysis is to determine this The distance between two-beam, then, the distance are used for determining the thickness of the glass substrate moved.Application No. CN201310281991 application for a patent for invention discloses a kind of position detecting device similar therewith, paper sheet thickness detection device And with position detecting device.The detection object of these dynamical fashion detection methods and device is only only capable of in moving process Enough produce displacement less, perpendicular to moving direction.

And for cloth, in above-mentioned manufacturing process, its quality is lighter compared with glass, paper, easily produce with transmitting Airwaves or mechanical oscillation in journey and produce fluctuation by a relatively large margin, as shown in Figure 1.As shown in figure 1, showing to be checked The state that the cloth of Thickness Measurement by Microwave often occurs during production line processing.What reference 1 was represented is two adjacent and each other Transfer roller 1 spaced apart, cloth 2 to be sent is transmitted between transfer roller 1.There is no keen draft in transmission environment It is dynamic with cause cloth to be transmitted produce it is negligible, non-parallel to direction of transfer vibration when (" ideal situation can be referred to as Under "), the transmitting path of cloth is shown in the reference 2 in Fig. 1.However, because its environment is often ventilation, air stream It is dynamic can produce it is irregular the cloth represented by reference 2 is blown up or down compared with air blast, and including transfer roller Delivery unit also due to mechanical oscillation and cause cloth to be sent non-parallel on its direction of transfer produce vibration, because This, under the actual conditions relative to ideal situation above, during the state that cloth is transmitted on delivery unit is probably Fig. 1 As shown in reference 2,2 ' or 2 ".

Therefore, although the detection means of above-mentioned prior art can detect the thickness of dynamic object, cloth can not be met Detect the special circumstances of occasion.

The content of the invention

In order to accurately and reliably obtain thickness information of the cloth before and after each processing step, according to the present invention One side there is provided a kind of thickness detecting method based on real-time video information, including:

(1) cloth to be detected is uniaxially transmitted;

(2) spot light irradiation is carried out to the side of cloth to be detected;

(3) the live fluoroscopic video of the opposite side of cloth to be detected is obtained;

(4) thickness of cloth to be detected is obtained based on the live fluoroscopic video.

Further, cloth to be detected is uniaxially transmitted by means of delivery unit in the step (1), the delivery unit The direction of motion is consistent with the length direction of cloth, and the delivery unit includes multiple transfer rollers each other with certain intervals, institute Cloth is stated to contact and uniaxially transmitted by the direct friction with the multiple transfer roller.

Further, in the step (3), when the spot light irradiates the side of the cloth to be detected, treated described Detect that the opposite side of cloth produces the shade by amplification, the profile of shadow representation cloth to be detected in a thickness direction.

Further, the reference that prominent its surface level altitude and thickness are not changed over is provided with the transfer roller Piece, the thickness P of the reference plateReference plateFor given value, the level altitude is passed more than the cloth to be detected by the delivery unit Send the peak swing of period 2 times.

Further, the step (4) includes:

(41) being thrown jointly during contacting for transfer roller and the cloth to be detected is obtained from the live fluoroscopic video The real-time height H for the shade that shadow is producedAlways

(42) the real-time height of reference plate projection that the reference plate projection is produced is obtained from the live fluoroscopic video HReference plate

(43) the actual radial dimension P of transfer roller is obtainedTransfer roller

(44) the thickness P of cloth to be detected is obtained by following formulaCloth to be detected=(PReference plate×HAlways)/HReference plate-PTransfer roller

According to another aspect of the present invention there is provided a kind of thickness detecting system based on real-time video information, including:

Delivery unit, for uniaxially transmitting cloth to be detected;

Spot light unit, is irradiated for the side to cloth to be detected;

Live fluoroscopic video acquisition unit, the live fluoroscopic video of the opposite side for obtaining cloth to be detected;

Cloth Thickness sensitivity unit, the thickness for obtaining cloth to be detected based on the live fluoroscopic video.

Further, the direction of motion of the delivery unit and the length direction of cloth are consistent, and the delivery unit includes There are multiple transfer rollers of certain intervals each other, the cloth is contacted and coverlet by the direct friction with the multiple transfer roller Transmitted to ground.

Further, when the spot light irradiates the side of the cloth to be detected, in the another of the cloth to be detected Side produces the shade by amplification, the profile of shadow representation cloth to be detected in a thickness direction.

Further, the reference that prominent its surface level altitude and thickness are not changed over is provided with the transfer roller Piece, the thickness P of the reference plateReference plateFor given value, the level altitude is passed more than the cloth to be detected by the delivery unit Send the peak swing of period 2 times.

Further, the cloth Thickness sensitivity unit includes:

First real-time shadow height acquiring unit, for obtained from the live fluoroscopic video transfer roller with it is described to be checked Survey the real-time height H for the shade that common projection is produced during contacting of clothAlways

Second real-time shadow height acquiring unit, for obtaining the reference plate projection production from the live fluoroscopic video Raw reference plate projects real-time height HReference plate

The actual radial dimension acquiring unit of transfer roller, the actual radial dimension P for obtaining transfer rollerTransfer roller

Cloth thickness determining unit, the thickness P for obtaining cloth to be detected by following formulaCloth to be detected=(PReference plate×HAlways)/ HReference plate-PTransfer roller

The beneficial effects of the invention are as follows:

(1) it is able to detect that the cloth thickness for meeting required precision (according to the preferred reality of the application in case of a dynamic basis Example is applied, its Thickness sensitivity precision can reach 10-5Rice);

(2) by dexterously being set using the reference plate on transfer roller, accurate noncontact is realized with cheap cost Cloth Thickness sensitivity.

Brief description of the drawings

Fig. 1 shows the vibration schematic diagram occurred in cloth transmit process.

Fig. 2 shows the FB(flow block) of the detection method according to the present invention.

Fig. 3 shows the composition frame chart of the detecting system according to the present invention.

Embodiment

As shown in Fig. 2 there is provided a kind of Thickness sensitivity based on real-time video information according to one embodiment of present invention Method, including:

(1) cloth to be detected is uniaxially transmitted;

(2) spot light irradiation is carried out to the side of cloth to be detected;

(3) the live fluoroscopic video of the opposite side of cloth to be detected is obtained;

(4) thickness of cloth to be detected is obtained based on the live fluoroscopic video.

Preferably, cloth to be detected, the fortune of the delivery unit are uniaxially transmitted by means of delivery unit in the step (1) Dynamic direction is consistent with the length direction of cloth, and the delivery unit includes multiple transfer rollers each other with certain intervals, described Cloth is contacted by the direct friction with the multiple transfer roller and uniaxially transmitted.

Preferably, in the step (3), when the spot light irradiates the side of the cloth to be detected, described to be checked The opposite side for surveying cloth produces the shade for passing through amplification, the profile of shadow representation cloth to be detected in a thickness direction.

Preferably, the reference that prominent its surface level altitude and thickness are not changed over is provided with the transfer roller Piece, the thickness P of the reference plateReference plateFor given value, the level altitude is passed more than the cloth to be detected by the delivery unit Send the peak swing of period 2 times.

Preferably, the step (4) includes:

(41) being thrown jointly during contacting for transfer roller and the cloth to be detected is obtained from the live fluoroscopic video The real-time height H for the shade that shadow is producedAlways

(42) the real-time height of reference plate projection that the reference plate projection is produced is obtained from the live fluoroscopic video HReference plate

(43) the actual radial dimension P of transfer roller is obtainedTransfer roller

(44) the thickness P of cloth to be detected is obtained by following formulaCloth to be detected=(PReference plate×HAlways)/HReference plate-PTransfer roller

As shown in Fig. 2 according to one embodiment of present invention there is provided one kind it is corresponding with the above method, based on real-time The thickness detecting system of video information, including:

Delivery unit, for uniaxially transmitting cloth to be detected;

Spot light unit, is irradiated for the side to cloth to be detected;

Live fluoroscopic video acquisition unit, the live fluoroscopic video of the opposite side for obtaining cloth to be detected;

Cloth Thickness sensitivity unit, the thickness for obtaining cloth to be detected based on the live fluoroscopic video.

Preferably, the direction of motion of the delivery unit and the length direction of cloth are consistent, and the delivery unit includes that This has multiple transfer rollers of certain intervals, and the cloth is contacted and unidirectional by the direct friction with the multiple transfer roller Transmit on ground.

Preferably, when the spot light irradiates the side of the cloth to be detected, in the opposite side of the cloth to be detected Produce the shade by amplification, the profile of shadow representation cloth to be detected in a thickness direction.

Preferably, the reference that prominent its surface level altitude and thickness are not changed over is provided with the transfer roller Piece, the thickness P of the reference plateReference plateFor given value, the level altitude is passed more than the cloth to be detected by the delivery unit Send the peak swing of period 2 times.

Preferably, the cloth Thickness sensitivity unit includes:

First real-time shadow height acquiring unit, for obtained from the live fluoroscopic video transfer roller with it is described to be checked Survey the real-time height H for the shade that common projection is produced during contacting of clothAlways

Second real-time shadow height acquiring unit, for obtaining the reference plate projection production from the live fluoroscopic video Raw reference plate projects real-time height HReference plate

The actual radial dimension acquiring unit of transfer roller, the actual radial dimension P for obtaining transfer rollerTransfer roller

Cloth thickness determining unit, the thickness P for obtaining cloth to be detected by following formulaCloth to be detected=(PReference plate×HAlways)/ HReference plate-PTransfer roller

It is the purpose to illustrate for the narration that presently preferred embodiments of the present invention is made above, and is not intended to limit essence of the invention It is really disclosed form, it is possible based on teaching above or to make an amendment or change from embodiments of the invention study , embodiment is for explanation principle of the invention and allows those skilled in the art to be existed with various embodiments using the present invention Select and describe in practical application, technological thought of the invention attempts to be determined by claim and its equalization.

Claims (10)

1. a kind of thickness detecting method based on real-time video information, including:
(1) cloth to be detected is uniaxially transmitted;
(2) spot light irradiation is carried out to the side of cloth to be detected;
(3) the live fluoroscopic video of the opposite side of cloth to be detected is obtained;
(4) thickness of cloth to be detected is obtained based on the live fluoroscopic video.
2. according to the method described in claim 1, it is characterised in that uniaxially passed by means of delivery unit in the step (1) Cloth to be detected is sent, the direction of motion of the delivery unit is consistent with the length direction of cloth, the delivery unit includes having each other There are multiple transfer rollers of certain intervals, the cloth is contacted by the direct friction with the multiple transfer roller and uniaxially passed Send.
3. according to the method described in claim 1, it is characterised in that in the step (3), the spot light irradiation is described to be checked When surveying the side of cloth, the shade by amplification, shadow representation cloth to be detected are produced in the opposite side of the cloth to be detected Profile in a thickness direction.
4. according to the method described in claim 1, it is characterised in that its prominent surface level altitude is provided with the transfer roller And the reference plate that thickness is not changed over, the thickness P of the reference plateReference plateFor given value, the level altitude is more than described to be checked Survey peak swing of the cloth during being transmitted by the delivery unit 2 times.
5. method according to claim 4, it is characterised in that the step (4) includes:
(41) transfer roller is obtained from the live fluoroscopic video, and the common projection during contacting is produced with the cloth to be detected The real-time height H of raw shadeAlways
(42) the real-time height H of reference plate projection that the reference plate projection is produced is obtained from the live fluoroscopic videoReference plate
(43) the actual radial dimension P of transfer roller is obtainedTransfer roller
(44) the thickness P of cloth to be detected is obtained by following formulaCloth to be detected=(PReference plate×HAlways)/HReference plate-PTransfer roller
6. a kind of thickness detecting system based on real-time video information, including:
Delivery unit, for uniaxially transmitting cloth to be detected;
Spot light unit, is irradiated for the side to cloth to be detected;
Live fluoroscopic video acquisition unit, the live fluoroscopic video of the opposite side for obtaining cloth to be detected;
Cloth Thickness sensitivity unit, the thickness for obtaining cloth to be detected based on the live fluoroscopic video.
7. method according to claim 6, it is characterised in that the direction of motion of the delivery unit and the length side of cloth To consistent, the delivery unit includes multiple transfer rollers each other with certain intervals, and the cloth with the multiple by passing The direct friction of roller is sent to contact and uniaxially transmitted.
8. method according to claim 7, it is characterised in that the spot light irradiates the side of the cloth to be detected When, the shade by amplification is produced in the opposite side of the cloth to be detected, shadow representation cloth to be detected is in thickness direction On profile.
9. method according to claim 8, it is characterised in that its prominent surface level altitude is provided with the transfer roller And the reference plate that thickness is not changed over, the thickness P of the reference plateReference plateFor given value, the level altitude is more than described to be checked Survey peak swing of the cloth during being transmitted by the delivery unit 2 times.
10. method according to claim 9, it is characterised in that the cloth Thickness sensitivity unit includes:
First real-time shadow height acquiring unit, for obtaining transfer roller and the cloth to be detected from the live fluoroscopic video The real-time height H for the shade that common projection is produced during contactingAlways
Second real-time shadow height acquiring unit, is produced for obtaining the reference plate projection from the live fluoroscopic video Reference plate projects real-time height HReference plate
The actual radial dimension acquiring unit of transfer roller, the actual radial dimension P for obtaining transfer rollerTransfer roller
Cloth thickness determining unit, the thickness P for obtaining cloth to be detected by following formulaCloth to be detected=(PReference plate×HAlways)/HReference plate- PTransfer roller
CN201710442663.2A 2017-06-13 2017-06-13 Thickness detecting system based on real-time video information CN107192344A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710442663.2A CN107192344A (en) 2017-06-13 2017-06-13 Thickness detecting system based on real-time video information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710442663.2A CN107192344A (en) 2017-06-13 2017-06-13 Thickness detecting system based on real-time video information

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1604335A (en) * 2004-11-15 2005-04-06 西华大学 CCD image sensor and high accuracy linear dimension measuring device and measuring method thereof
CN201425473Y (en) * 2009-05-21 2010-03-17 昆山善思光电科技有限公司 Nondestructive test thickness tester
CN102500627A (en) * 2011-10-19 2012-06-20 北京金自天正智能控制股份有限公司 Plate width, side shape and side defect measuring instrument and measuring method thereof
CN105157584A (en) * 2015-08-31 2015-12-16 江苏大学 On-line measurement apparatus and method of thickness of non-contact object
CN105293235A (en) * 2015-10-09 2016-02-03 中国矿业大学 Non-contact detection device and method for pitch circle diameter of steel wire rope for mining
CN106226321A (en) * 2016-08-30 2016-12-14 成都尽知致远科技有限公司 A kind of device of infrared detection cloth quality
CN106610384A (en) * 2015-10-22 2017-05-03 上海兴彦影像科技有限公司 Intelligent apparatus replacing manual cloth detection

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1604335A (en) * 2004-11-15 2005-04-06 西华大学 CCD image sensor and high accuracy linear dimension measuring device and measuring method thereof
CN201425473Y (en) * 2009-05-21 2010-03-17 昆山善思光电科技有限公司 Nondestructive test thickness tester
CN102500627A (en) * 2011-10-19 2012-06-20 北京金自天正智能控制股份有限公司 Plate width, side shape and side defect measuring instrument and measuring method thereof
CN105157584A (en) * 2015-08-31 2015-12-16 江苏大学 On-line measurement apparatus and method of thickness of non-contact object
CN105293235A (en) * 2015-10-09 2016-02-03 中国矿业大学 Non-contact detection device and method for pitch circle diameter of steel wire rope for mining
CN106610384A (en) * 2015-10-22 2017-05-03 上海兴彦影像科技有限公司 Intelligent apparatus replacing manual cloth detection
CN106226321A (en) * 2016-08-30 2016-12-14 成都尽知致远科技有限公司 A kind of device of infrared detection cloth quality

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Application publication date: 20170922

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