CN108180859A - One kind is based on binocular stereo vision composite and flexible film deformation of surface detection device and method - Google Patents
One kind is based on binocular stereo vision composite and flexible film deformation of surface detection device and method Download PDFInfo
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- CN108180859A CN108180859A CN201810174580.4A CN201810174580A CN108180859A CN 108180859 A CN108180859 A CN 108180859A CN 201810174580 A CN201810174580 A CN 201810174580A CN 108180859 A CN108180859 A CN 108180859A
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- composite
- flexible film
- sample cell
- deformation
- stereo vision
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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
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
-
- 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
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
Abstract
The present invention discloses a kind of based on binocular stereo vision composite and flexible film deformation of surface detection device and method.The detection device includes deformation of surface control system, including control computer, precise injection pump and sample cell；The control computer is pumped with precise injection, pressure detector is connect, and the pressure detector is mounted on sample cell, for detecting fluid pressure in sample cell and feeding back to control computer；There is the erecting device of composite and flexible film on the outside of the circular hole of the sample cell upper surface；Binocular stereo vision three dimensional shape measurement system, including two CCD cameras, on tripod head, for acquiring the image of composite and flexible film under different deformation；Pattern process computer is connect with two CCD cameras, for handling the image of CCD camera acquisition, exports the three-dimensional appearance of composite and flexible film.The present invention realizes measurement of full field and non-cpntact measurement, has the advantages such as measurement range is big and extensive diagnostic ability is strong, high certainty of measurement.
Description
Technical field
The invention belongs to the detection technique fields of fexible film, more particularly to a kind of to be based on binocular stereo vision composite and flexible
Film deformation of surface detection device and method.
Background technology
In recent years, flexible electronic technology is just applied to the fields such as information, the energy, medical treatment and national defence by leaps and bounds.It was predicted that
The market of flexible electronic product will increase to 69,000,000,000 U.S. dollars of 2026 from 26,500,000,000 U.S. dollars of 2016.As flexible electronic
Important component in technology, flexible sensor is the popular domain in scientific research in recent years, and composite and flexible film
It is a pith of flexible sensor.
Presently, there are one it is relatively difficult the problem of be that composite and flexible thin film optoelectronic transducer can not perfectly comply with covering
The curved surface of any complexity, because composite and flexible film will not be changed in deformation of surface is carried out with a fixed curvature, and
And ideal spherical surface is also not necessarily in each deformation.So it needs to test by controllable deformation of surface compound to obtain
The three-dimensional appearance of fexible film deformation of surface finds out the changing rule of its deformation of surface.
Researchers also proposed the detection side that deformation of surface of some composite and flexible films under the action of different power becomes
Method, but there is the deficiencies of being unable to measurement of full field, test method is cumbersome, and contact type measurement in these methods, operational observations are not
Easily, there is very big error in the result of detection.Therefore it needs to invent a kind of high experimental provision of measuring accuracy of energy measurement of full field
And method.
Invention content
It is provided a kind of based on binocular stereo vision composite and flexible it is an object of the invention to solve the technical issues of above-mentioned
Film deformation of surface detection device and method.
To achieve the above object, the present invention adopts the following technical scheme that：
One kind is based on binocular stereo vision composite and flexible film deformation of surface detection device, including：
Deformation of surface control system, including control computer, precise injection pump and sample cell；The control computer and essence
Close syringe pump, pressure detector connection, the pressure detector is mounted on sample cell, for detecting fluid pressure in sample cell
And feed back to control computer；There is the erecting device of composite and flexible film on the outside of the circular hole of the sample cell upper surface；
Binocular stereo vision three dimensional shape measurement system including two CCD cameras, on tripod head, is used for
Acquire the image of composite and flexible film under different deformation；Pattern process computer is connect with two CCD cameras, for locating
The image of CCD camera acquisition is managed, exports the three-dimensional appearance of composite and flexible film.
Two CCD cameras are symmetrically mounted in horizontally disposed first supporting beam, the first supporting beam vertical connection
On the lower surface of horizontally disposed second supporting beam, and by second supporting beam and on tripod head.
The erecting device of the composite and flexible film includes one and is used to composite and flexible film being pressed in sample cell upper surface
On circular hole at annular preform and multiple for annular preform to be pressed abd fixed on to Z-type pressing plate on sample cell.
The pressure detector is mounted on the side wall of sample cell.
It is examined described in one kind based on binocular stereo vision composite and flexible film deformation of surface the present invention also aims to provide
The detection method of device is surveyed, is included the following steps：
S1：Marking film：The composite and flexible film for needing to be detected is chosen, film is carried out with speckle tools
Spray spot mark；
S2：Camera is installed：By two CCD camera clampings on tripod head；
S3：Adjust camera orientation：Two CCD cameras by data line with image computer are connect, starts image and calculates
Machine opens camera orientation adjustment software, according to the orientation of Image Adjusting camera shown in software and fixation；
S4：Calibration for cameras parameter：Phase is carried out to two CCD cameras with pattern distortion scaling board and camera parameter scaling board
The calibrated and calculated of pass；
S5：Sample cell is lain in a horizontal plane on experimental bench, control computer and precise injection pump are connected, by pressure detecting
Device is mounted on sample cell；
S6：Clamping film；The composite and flexible film for identifying completion is fixed on the circular hole of sample cell；
S7：Acquire original data；When not applying pressure in sample cell, surveyed with binocular stereo vision three-dimensional appearance
Amount system first acquires original data and records；
S8：Start control computer, according to pressure detector to the Real-time Feedback of hydraulic pressure in sample cell, use control computer
Control precise injection pumps to adjust the hydraulic pressure in sample cell, realizes the deformation of surface of tested film, chooses a state and keeps surely
It is fixed；
S9：D surface contouring：Tested composite and flexible film is under a deformation of surface state, by binocular stereo vision three
Shape measurement system acquisition image data is tieed up, original data and deformation pattern number are being imported using digital imaging processing software
According to rear operation, the three-dimensional appearance of film deformation of surface under the hydraulic pressure is exported；
S10：Step S7-S9 is repeated, liquid in sample cell is changed by control computer, precise injection pump and pressure detector
Pressure, obtains the three-dimensional appearance of composite and flexible film deformation under different hydraulics.
The present invention is connect by using two CCD cameras with possessing the image computer of digital picture correlation computations ability, is matched
The hydraulic data fed back by pressure detector and precise injection pump are closed to control and stablize the control of different hydraulic pressure in sample cell
Computer realizes the detection of the composite and flexible film three-dimensional appearance of deformation of surface at various pressures.
The present invention constructs binocular solid detecting system with two CCD cameras, realizes measurement of full field and non-cpntact measurement,
Tested three-dimensional appearance of the film under different hydraulic pressure is finally obtained by the image real time transfer acquired, is solved in the prior art not
Can in terms of the whole audience and non-cpntact measurement on detect insufficient.
The present invention realizes measurement of full field and non-cpntact measurement, have measurement range greatly and extensive diagnostic ability by force etc. it is excellent
Gesture, high certainty of measurement.
Description of the drawings
Fig. 1 is the structural representation based on binocular stereo vision composite and flexible film deformation of surface detection device of the present invention
Figure；
In figure：1- control computers；2- composite and flexible films；The first CCD cameras of 3-；The first supporting beams of 4-；5- second
Support beam；The second CCD cameras of 6-；7- image computers；8- tripod heads；9- pressure detectors；10- sample cells；11- annular pressures
Piece；12-Z type pressing plates；13- precise injections pump.
Specific embodiment
In the following, the substantive distinguishing features and advantage of the present invention are further described with reference to example, but not office of the invention
It is limited to listed embodiment.
Shown in Figure 1, one kind is based on binocular stereo vision composite and flexible film deformation of surface detection device, including：
Deformation of surface control system, the control computer 1 of the pressure control including being used for different hydraulic pressure in sample cell are accurate
Syringe pump 13 and sample cell 10；Installation is useful on the outside of circular hole on 10 upper surface of sample cell by two layers of silica gel thin film and interval
The film erecting device for the composite and flexible film 2 that liquid is formed；
Binocular stereo vision three dimensional shape measurement system, including the first CCD camera 3 being mounted on tripod head and
Two CCD cameras 6, for acquiring the image of composite and flexible film 2 under different deformation；Pattern process computer 7 is further included, utilizes number
The image of word image correlation technique processing CCD camera acquisition, the three-dimensional appearance of output composite and flexible film 2.
Wherein, the control computer 1 is connect with pressure detector 9 and precise injection pump 13, and the pressure detector 9 is pacified
On the side wall of sample cell 10, for detecting the pressure in sample cell 10, and feedback information is to control computer 1.
Wherein, the film erecting device on the sample cell 10 include an annular preform 11 and four Z-type pressing plates 12, four
A Z-type pressing plate 12 is fixed on sample cell, and annular preform 11 is to be measured on the circular hole of 10 upper surface of sample cell for that will be positioned over
After composite and flexible film 2 is pushed down, annular preform 11 is pressed in by four Z-type pressing plates 12, annular preform 1 is fixed, so as to make
It is tested that installation is sealed between film 2 and sample cell 10.
Specifically, first CCD camera and the second CCD camera are relatively mounted on horizontally disposed first supporting beam 4
On, first supporting beam 4 is connected with 5 vertical cartel of the second supporting beam, bottom and the tripod head 8 of the second supporting beam 5
Top is fixedly connected, so as to fulfill 4 and second supporting beam of the first supporting beam, 5 integral installation on tripod head 8, so as to
To realize the adjusting in three directions of the first CCD camera and the second CCD camera.
The above-mentioned detection method based on binocular stereo vision composite and flexible film deformation of surface detection device of the present invention,
Step is as follows；
S1：Marking film：The composite and flexible film for needing to be detected is chosen, with speckle tools to composite and flexible
Film carries out spray spot mark；
S1：Camera is installed：First CCD camera and the second CCD camera are mounted in the first supporting beam, then first is supported
Beam links together with the second supporting beam, and last entirety clamping is on tripod head；
S2：Adjust camera orientation：First CCD camera and the 2nd CCDCCD cameras with image computer are connect, start figure
As computer, related software is opened, is fixed after adjusting two camera orientations according to the image shown in software, later by camera
Aperture is transferred to maximum, and the image adjusted under depth of field minimum in software is made to be adjusted to maximum to clear state, then by the depth of field；
S3：Calibration for cameras parameter：To carry out two CCD cameras with pattern distortion scaling board and camera parameter scaling board
Relevant calibrated and calculated；
S4：Sample cell is lain in a horizontal plane on experimental bench, by control computer connection precise injection pump, precise injection pump connects
Sample cell is connect, and pressure detector is mounted on sample cell and is connect with control computer, pressure detector will with sample cell
Keep good leakproofness；
S5：Clamping is tested composite and flexible film：The composite and flexible film for identifying completion is passed through into annular preform and seals installation
Annular preform is fixed on the circular hole of sample cell, and with four Z-type pressing plates.
S6：Acquire original data：After tested composite and flexible film clamping is completed, do not apply in sample cell
Pressure first acquires original data, and record with binocular stereo vision three dimensional shape measurement system；
S7：Start control computer, according to pressure detector to the Real-time Feedback of hydraulic pressure in sample cell, use control computer
Control precise injection pumps to adjust the hydraulic pressure in sample cell, realizes the deformation of surface of tested film, chooses a deformation of surface shape
State keeps stablizing；
S8：D surface contouring is tested composite and flexible film in the state of a deformation of surface, by binocular stereo vision
Three dimensional shape measurement system acquires image data, recycles digital picture related software, imports original data and deformation pattern
As carrying out operation after data, the three-dimensional appearance of the film deformation of surface under the hydraulic pressure is exported；
S9：Step S6-S8 is repeated, is changed in sample cell by control computer, precise injection pump and pressure detector
Hydraulic pressure obtains the three-dimensional appearance of composite construction fexible film deformation under different hydraulics.
The present invention is matched by the way that two CCD cameras are connect with possessing the image computer of digital picture correlation computations ability
The hydraulic data fed back by pressure detector and precise injection pump are closed to control and stablize the control of different hydraulic pressure in sample cell
Computer realizes the detection of the composite and flexible film three-dimensional appearance of deformation of surface at various pressures.
The present invention constructs binocular solid detecting system with two CCD cameras, realizes measurement of full field and non-cpntact measurement,
Tested three-dimensional appearance of the film under different hydraulic pressure is finally obtained by the image real time transfer acquired, is solved in the prior art not
Can in terms of the whole audience and non-cpntact measurement on detect insufficient.
The present invention realizes measurement of full field and non-cpntact measurement, have measurement range greatly and extensive diagnostic ability by force etc. it is excellent
Gesture, high certainty of measurement.
The above described is only a preferred embodiment of the present invention, it is not the limitation for making other forms to the present invention.Appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
Embodiment is imitated, but every without departing from technical solution of the present invention content, construction according to the present invention and operation principle are to above real
Any simple modification, equivalent variations and remodeling that example is made are applied, still falls within the protection domain of technical solution of the present invention.
Claims (5)
1. one kind is based on binocular stereo vision composite and flexible film deformation of surface detection device, which is characterized in that including：
Deformation of surface control system, including control computer, precise injection pump and sample cell；The control computer is noted with accurate
Pump, pressure detector connection are penetrated, the pressure detector is mounted on sample cell, for detecting fluid pressure in sample cell and returning
It feeds control computer；There is the erecting device of composite and flexible film on the outside of the circular hole of the sample cell upper surface；
Binocular stereo vision three dimensional shape measurement system, including two CCD cameras, on tripod head, for acquiring
The image of composite and flexible film under different deformation；Pattern process computer is connect with two CCD cameras, for handling CCD
The image of camera acquisition exports the three-dimensional appearance of composite and flexible film.
2. according to claim 1 based on binocular stereo vision composite and flexible film deformation of surface detection device, feature exists
In two CCD cameras are symmetrically mounted in horizontally disposed first supporting beam, and first supporting beam is vertically connected on level
On the lower surface of second supporting beam of setting, and by second supporting beam and on tripod head.
3. according to claim 1 based on binocular stereo vision composite and flexible film deformation of surface detection device, feature exists
In the erecting device of the composite and flexible film includes one for composite and flexible film to be pressed in the circle on sample cell upper surface
Annular preform and multiple Z-type pressing plates for being used to be pressed abd fixed on annular preform on sample cell at hole.
4. according to claim 1 based on binocular stereo vision composite and flexible film deformation of surface detection device, feature exists
In the pressure detector is mounted on the side wall of sample cell.
5. based on binocular stereo vision composite and flexible film deformation of surface detection device described in a kind of any one of claim 1-4
Detection method, which is characterized in that include the following steps：
S1：Marking film：The composite and flexible film for needing to be detected is chosen, spray spot is carried out to film with speckle tools
Mark；
S2：Camera is installed：By two CCD camera clampings on tripod head；
S3：Adjust camera orientation：Two CCD cameras by data line with image computer are connect, starts image computer, beats
Camera orientation adjustment software is opened, according to the orientation of Image Adjusting camera shown in software and fixation；
S4：Calibration for cameras parameter：Two CCD cameras are carried out with pattern distortion scaling board and camera parameter scaling board relevant
Calibrated and calculated；
S5：Sample cell is lain in a horizontal plane on experimental bench, control computer and precise injection pump are connected, pressure detector is pacified
On sample cell；
S6：Clamping film；The composite and flexible film for identifying completion is fixed on the circular hole of sample cell；
S7：Acquire original data；When not applying pressure in sample cell, with binocular stereo vision measuring three-dimensional morphology system
System first acquires original data and records；
S8：Start control computer, according to pressure detector to the Real-time Feedback of hydraulic pressure in sample cell, controlled with control computer
Precise injection pumps to adjust the hydraulic pressure in sample cell, realizes the deformation of surface of tested film, chooses a state and keeps stabilization；
S9：D surface contouring：Tested composite and flexible film is under a deformation of surface state, by binocular stereo vision three-dimensional shaped
Looks measuring system acquires image data, using digital imaging processing software after original data and deformation pattern data are imported
Operation exports the three-dimensional appearance of film deformation of surface under the hydraulic pressure；
S10：Step S7-S9 is repeated, hydraulic pressure in sample cell is changed by control computer, precise injection pump and pressure detector,
Obtain the three-dimensional appearance of composite and flexible film deformation under different hydraulics.
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| CN201810174580.4A CN108180859A (en) | 2018-03-02 | 2018-03-02 | One kind is based on binocular stereo vision composite and flexible film deformation of surface detection device and method |
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| CN201810174580.4A CN108180859A (en) | 2018-03-02 | 2018-03-02 | One kind is based on binocular stereo vision composite and flexible film deformation of surface detection device and method |
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| CN109341559A (en) * | 2018-09-30 | 2019-02-15 | 天津大学 | A kind of aero-engine casing deformation measurement method based on Binocular Vision Principle |
| CN110044723A (en) * | 2019-05-08 | 2019-07-23 | 苏州昇特智能科技有限公司 | A kind of Visualized Flexible material bending performance measuring device |
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