CN107192344A - Thickness detecting system based on real-time video information - Google Patents
Thickness detecting system based on real-time video information Download PDFInfo
- 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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- Prior art keywords
- cloth
- detected
- thickness
- reference plate
- transfer roller
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- Legal status (The legal status 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 status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
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
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。
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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| Publication Number | Publication Date |
|---|---|
| CN107192344A true CN107192344A (en) | 2017-09-22 |
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ID=59876276
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710442663.2A Pending CN107192344A (en) | 2017-06-13 | 2017-06-13 | Thickness detecting system based on real-time video information |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113976467A (en) * | 2021-10-22 | 2022-01-28 | 西安奕斯伟材料科技有限公司 | System for be used for selecting separately silicon chip |
| CN114739300A (en) * | 2022-03-29 | 2022-07-12 | 上海优睿谱半导体设备有限公司 | Method for measuring epitaxial layer thickness of epitaxial wafer |
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| 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 |
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| 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 |
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| CN114739300A (en) * | 2022-03-29 | 2022-07-12 | 上海优睿谱半导体设备有限公司 | Method for measuring epitaxial layer thickness of epitaxial wafer |
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