CN109459441A - A kind of detection device, system and method - Google Patents
A kind of detection device, system and method Download PDFInfo
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- CN109459441A CN109459441A CN201910039469.9A CN201910039469A CN109459441A CN 109459441 A CN109459441 A CN 109459441A CN 201910039469 A CN201910039469 A CN 201910039469A CN 109459441 A CN109459441 A CN 109459441A
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- 238000000034 method Methods 0.000 title abstract description 17
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- 230000007246 mechanism Effects 0.000 claims abstract description 55
- 238000012360 testing method Methods 0.000 claims abstract description 30
- 238000003384 imaging method Methods 0.000 claims description 62
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- 230000005855 radiation Effects 0.000 claims description 21
- 230000007547 defect Effects 0.000 claims description 13
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
- G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
- G01N21/896—Optical defects in or on transparent materials, e.g. distortion, surface flaws in conveyed flat sheet or rod
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
- G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
- G01N21/898—Irregularities in textured or patterned surfaces, e.g. textiles, wood
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Abstract
A kind of detection device, system and method, belong to testing equipment field.Detection device includes imager and rotating mechanism.Wherein, imager is configured to that the surface of mobile object is imaged.Imager is attached to rotating mechanism, rotating mechanism is configured to driving imager as mobile object moves synchronously, and keep the region to be imaged of imager and mobile object opposing stationary, so that imager obtains the image of the not motion blur to the region to be imaged of mobile object.By moving imager in opposing stationary mode with moving object to be detected, to allow imager to obtain the clearly image to the target of detection, to identify flaw from image.
Description
Technical field
This application involves testing equipment fields, in particular to a kind of detection device, system and method.
Background technique
It is usually detection object to be held by operator, and be aided with the naked view of human eye or microscope for sheet surface Defect Detection
Or the magnifying glass detection various flaw types of plate appearance (such as pollute, scratch, leakage copper, residue glue).However for high-speed motion
Sheet material under state is difficult to realize by manually carrying out detection.
Therefore, surface quality detection is carried out just at a problem in industry for the sheet material of high-speed motion.
Currently, carry out Surface testing for the sheet material (such as various thin-film materials) of high-speed motion takes machine vision side mostly
Formula.Specifically, the line-scan digital camera of fixed position is set above sheet material, and during sheet movement, linear array push sweeps camera completion
Imaging, then formed image carries out flaw analysis.However, when the speed of related movement of sheet material and image is higher, image
Motion blur also increases accordingly, for small flaw just can not blur-free imaging and be difficult to find or distinguish.
The information disclosed in the background technology section is intended only to deepen the understanding to the general background technology of the application, and
It is not construed as recognizing or implying in any form that the information constitutes the prior art known to those skilled in the art.
Summary of the invention
For improve, even solve the problems, such as it is in the prior art at least one, present applicant proposes a kind of detection devices, system
And method.
The application is achieved in that
In a first aspect, the example of the application provides a kind of detection device.
Detection device in example is used to carry out Surface testing to according to the mobile object of given pattern further.
Detection device includes:
Imager and radiation source, radiation source irradiate the imageable target and imaging region, and imager is configured to pair
The surface reflection energy of the mobile object is imaged from the energy that the back side transmits.
Rotating mechanism, imager are attached to rotating mechanism, and rotating mechanism is configured to driving imager with mobile object
It moves synchronously, and keeps the region to be imaged of imager and mobile object opposing stationary, so that imager is obtained to mobile object
Region to be imaged not motion blur image.
During the motion due to object, in order to obtain the blur-free imaging to its surface.Make imager by rotating mechanism
Movement, and be speed (including rate and direction) identical with moving object, so that imager is for moving object body surface
The imaging region in face is relatively stationary, to can be got a distinct image by taking pictures, in order to be able to obtain from image
The surface state of object, and then can distinguish with the presence or absence of the distribution of flaw or flaw, type, property, geometric parameter
Deng.
With reference to first aspect, in some optional examples of the first possible embodiment of the first aspect of the application
In, rotating mechanism includes rotor, and imager is connected directly or indirectly to rotor.Imager can be rotated mechanism driving
Moved along the first track or the second track move, wherein the first track be circumference the first closed-loop, the second track be circular arc and
The second closed-loop that the combination of straight line is constituted.
According to different needs, imager can have different driving methods.That is, in the different motion mould of mobile object
Under formula, imager is required to be driven in a corresponding manner, so as to enable imager in desired fashion with
Mobile object keeps opposing stationary.
The movement of mobile object is adapted in order to facilitate imager, imager can be directly connected between turning for rotating mechanism
Kinetoplast can also be connected to the rotor of rotating mechanism indirectly by middleware.It is attached directly to rotate in imager
When body, there is rotating manner identical with rotor.And when imager is indirectly attached to rotor, the movement of imager
Mode can according to need and selectively be arranged, select to obtain more flexible movement to adapt to mobile object.
Rotor is capable of providing the impetus of imager connection, therefore, according to the appropriate number of the corresponding arrangement of the number of imager
The rotor of amount.In addition, the more complicated alignment placement of imager may be implemented, by the quantity selection to rotor so as to energy
It is enough that more fully Image Acquisition is realized to mobile object.
With reference to first aspect, in some optional examples of second of possible embodiment of the first aspect of the application
In, radiation source and imager and imaging region are in desired spatial relationship, are provided with single filter in the optical path of imager
Mating plate or more optical filters combine, and single optical filter or the combination of more optical filters are provided on the emitting light path of radiation source.
By optical filter being arranged in the optical path of imager and/or the setting optical filter on the emitting light path of radiation source
Method or imager are applied in combination with radiation source optical filter, realize multispectral imaging, obtain the feature of product quality flaw
Spectrum picture.
In second aspect, the embodiment of the present application provides a kind of detection system.
Detection system includes multiple detection devices, and whole detection devices cooperates in multistage arrangement；
Wherein, the flaw of previous stage detection device detection can pass through corresponding geometry by the detection device of next stage is optional
Resolution ratio and/or multispectral imaging, to measure all product defect parameters.
The cooperation of multiple detection devices cooperates, and the abundant detection to product defect may be implemented, and realizes and measures all productions
The flaw of product.
In the third aspect, the example of the application provides a kind of detection device, is used for according to given pattern further
Mobile object carries out Surface testing.
Detection device includes:
Imager, imager are configured to that the surface of mobile object is imaged；
Rotating mechanism, rotating mechanism include sports ring, the first rotating member, the second rotating member, the first rotating member, the second rotation
Part is arranged and strained movements ring, and imager is connected to sports ring, and the first rotating member and the second rotating member being capable of common rotation and bands
Dynamic sports ring simultaneously drives imager to move synchronously with mobile object, and imager is enable to obtain the region to be imaged to mobile object
Not motion blur image.
By the way that imager is connected to sports ring, and sports ring drives progress by the first rotating member and the second rotating member jointly
Rotation.In this way, imager can carry out circulatory motion.Region between the first rotating member and the second rotating member, imager can
To be moved along linear track, thus can be opposing stationary with the object equally with linear movement, to obtain corresponding inspection
Altimetric image.It can be moved along linear track in view of imager, opposing stationary imaging can be carried out to unyielding target.
As needed, imager can be configured as the imaging list of required (specified) geometric resolution or/and spectrum parameter
Member.In this way, needing to obtain object to be measured specific region, placement has adaptation geometric resolution or/and spectrum when measuring
The imaging unit of parameter.Further, imager can be activated with driven device stops (such as laterally quickly movement) to designated position
Get off, so as to by such as with circulatory motion component movement motion mode, with keep imager with by the phase of imageable target
To static imaging.
Compared with imager above-mentioned, the imaging of the imaging unit of required (specified) geometric resolution or/and spectrum parameter
Device has different scale bars, for example, bigger scale bar would generally be selected, or obtains the imaging of different spectral informations
Device.Geometric resolution indicates image fine degree, such as high geometric resolution, low geometric resolution.Required spectrum parameter at
As device also similarly restriction having the same.
In conjunction with the third aspect, in some optional examples of the first possible embodiment of the third aspect of the application
In, the first rotating member and the second rotating member are separately selected from driving member or driven member.
First rotating member and the second rotating member can be used as driving member together, and together to drive imager.First turn
Moving part and the second rotating member select driving member that can provide more steady and enough driving forces, to keep imager corresponding
Obtain sufficient power and stable operating status.When one of the first rotating member and the second rotating member be driving member, and
When another one is driven member, the structure and complexity of driving mechanism can be simplified to a certain extent, while can also reduce
Drive energy consumption.
In fourth aspect, the example of the application provides a kind of detection device, is used for according to given pattern further
Mobile object carries out Surface testing.
Detection device includes:
Imager, imager are configured to that the surface of mobile object is imaged；
Rotating mechanism, rotating mechanism include the first revolving part, and the first revolving part includes being mutually matched the be connected as one
One inner ring body and the first outer ring body, imager are connected to the first inner ring body and towards the first outer ring bodies, and mobile object can approach
Or it is attached at the movement of the first outer ring body, the first revolving part can be moved synchronously with mobile object, and imager is enable to obtain to shifting
The image of the not motion blur in the region to be imaged of animal body.
Using the first revolving part, imager can be directly connected between revolving part, and be rotated in company with the first revolving part.
In this way, not needing in addition to be arranged other connecting components to drive or fixed imaging device, while being also different from the collection for improving equipment
Cheng Du, reduce volume.
In conjunction with fourth aspect, in some optional examples of the first possible embodiment of the fourth aspect of the application
In, rotating mechanism includes the second revolving part, and the second revolving part includes being mutually matched the second inner ring body and second being connected as one
Outer ring body, the second inner ring body are connected with the imager arranged in a manner of towards the second outer ring body.
First outer ring body and the second outer ring body are arranged according to default spacing, so that imager can be to the opposite of mobile object
Two sides be imaged.
First revolving part and the second revolving part common rotation and can drive imager to move synchronously with mobile object, make into
As device can obtain the image of the not motion blur to the region to be imaged of mobile object.
For the object that needs are detected in two sides, by the imager for being set to the first rotating member and the second rotating member
It can achieve and realize while in the purpose of bilateral detection.In addition, the setting of two rotating members can also be real to a certain extent
Now to the adaptation of the motor pattern of the object under compound movement state.
In conjunction with the embodiment of the first of fourth aspect, in second of possible embodiment party of the fourth aspect of the application
In some optional examples of formula, the first inner ring body and the second inner ring body be it is isodiametric or non-isodiametric, the first outer ring body and
Second outer ring body is isodiametric or non-isodiametric.
At the 5th aspect, the example of the application provides a kind of detection method of mobile object.
The detection method is for detecting the surface of mobile object.
Detection method includes:
The motor pattern of mobile object is obtained, motor pattern includes movement rate and the direction of motion；
Imager is set, enables imager according to motor pattern with the synchronous fortune of the mode static relative to mobile object
It is dynamic；
It is imaged by surface of the imager to mobile object.
It is different from that modes are detected by visual observation etc. by hand-held detection object, by by imager and detection object
(mobile object) synchronously moves in the same fashion, so that the two is made to reach opposing stationary state, it is hereby achieved that
The surface image of moving object, to obtain, it whether there is or there are which kind of flaws, defect.
Further, detection method and device provided in the application example is used and is moved synchronously with flexible platelet
Imaging device (such as area array cameras), and imaging region is imaged in the case where the two is opposing stationary, so as to obtain
Precision is higher, image of not motion blur, in order to learn the surface blemish problem of test object.
Further, detection method and device provided in the application example in imaging region for moving synchronously
Objective imaging, can obtain that precision is higher, 3 D stereo of not motion blur in the case where the two is opposing stationary
Image, in order to learn test object three-dimensional surface flaw problem.
Further, detection method and device provided in the application example can be used for existing to non-flexible material surface
Imaging region is imaged in the case where opposing stationary, precision is higher, image of not motion blur so as to obtaining, with
Convenient for learning the surface blemish problem of test object.
The utility model has the advantages that
Detection device and method provided by the embodiments of the present application can be used for carrying out Surface testing to the object in movement,
It relates generally to the detection to the surface topography of object.By making the imager in detection device and object to be detected keep same
The motion mode of the adaptation of step reaches the opposing stationary of imager and object to be detected.Under the conditions of so, imager can
To obtain the image of clear (without the motion blur) of surface of moving object, moving target especially on high-speed product assembly line
Microcosmic precise image.So as to obtain information related with aimed quality from target image by image processing means.
Detailed description of the invention
Technical solution in ord to more clearly illustrate embodiments of the present application, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only some embodiments of the application, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 shows the signal of the relative positional relationship of a kind of detection device provided by the embodiments of the present application and object under test
Figure；
Fig. 2 shows the flow diagrams of measuring targets provided by the embodiments of the present application detect；
Fig. 3 shows showing for the relative positional relationship of another detection device provided by the embodiments of the present application and object under test
It is intended to；
Fig. 4 shows showing for the relative positional relationship of another detection device provided by the embodiments of the present application and object under test
It is intended to.
Icon: 100- mobile object；200- visual field；201- imager；The second rotating member of 203-；The first rotating member of 202-；
204- sports ring；The first revolving part of 300-；The first outer ring body of 301-；The first inner ring body of 302-；The connection of the first power supply signal of 602-
Slip ring；The second revolving part of 400-；The second outer ring body of 401-；The second inner ring body of 402-；601- second source signal connection slip ring.
Specific embodiment
To keep the purposes, technical schemes and advantages of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
In attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is
Some embodiments of the present application, instead of all the embodiments.The application being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.Therefore, the reality to the application provided in the accompanying drawings below
The detailed description for applying example is not intended to limit claimed scope of the present application, but is merely representative of the selected implementation of the application
Example.Based on the embodiment in the application, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, shall fall in the protection scope of this application.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present application, it should be noted that the instructions such as term " center ", "upper", "lower", "inner", "outside"
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings or this application product using when usually put
Orientation or positional relationship, be merely for convenience of description the application and simplify description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.This
Outside, term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
In the description of the present application, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also indirectly connected through an intermediary, it can
To be the connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in this application.
In this application, in the case where not contradiction or conflict, all embodiments, embodiment and the feature of the application
It can be combined with each other.In this application, conventional unit, component etc., both can be commercially available, can also be according to the application public affairs
The content self-control opened.In this application, in order to protrude the emphasis of the application, to some conventional operations and unit, component
The omission of progress, or be only briefly described.
Flexible sheet-like products are the common product forms of industrial enterprise, as protective film, coated film, optical film, lithium electric separator,
The detection of the various film product quality such as food package film, paper, laser film, leather and slim plate class product, it is such as slim
The surface quality detection of metal and nonmetal plate, coiled material.
For the surface topography state for learning jobbie, can be implemented by way of artificial visual.In practice, Shen
The apparatus and method for for having attempted to take the detection of flexible sheet-like products surface quality as the aforementioned of asking someone is as follows:
In the top of band-type product export position, line scan camera, and the linear array spreading direction and band of line scan camera are set
The direction of motion of shape product is vertical, the movement of the imaging viewing field of line scan camera and band-type product matches.
Complete the imaging to the band-type product in movement.
The detection of flaw, record, alarm and to the processing of product are carried out based on acquired image.
Based on above-mentioned detection method, fineness and detection speed are detected inversely, i.e. the constant item of camera imaging index
It is smaller to product defect detection geometric scale under part, it is desirable that product line movement velocity is slower.And if produced on product production line
Product movement velocity is constant, and when needing to detect very high-precision fine texture, image needs the shorter time for exposure, but the time for exposure
It is not infinitely to shorten.
But with the raising of production equipment performance, the speed of output of products is in continuous improvement, in product flowing water
Under the premise of line conveying speed is continuously improved, the still acquisition original high-resolution of product image even obtains more high-fineness
Image, need new technical support.
It is same as mentioned above to unsuitable curved plate surface Defect Detection.
The case where needs are largely detected, it is clear that manually visualize or above-mentioned detection mode is all to be difficult to complete
Desired task.
It is desirable to the detection to a large amount of objects under test is completed by higher efficiency.Especially, at object under test
When motion state, by equipment rather than artificial detection is necessary.
In practice, it is found by the applicant that: carry out surface inspection for curved a large amount of sheet material or plate product should not be carried out
It when survey, is detected under static state even by equipment, also will be to need biggish workload.
In view of this, applicant proposed one kind in sheet material and plate motion process, by imaging device and it is detected
Object synchronization movement obtains the scheme of target clear image.Imaging device by it is appropriate design its can when needing to be imaged guarantor
It holds and is imaged under the relative static conditions with object under test, obtain the precise image of high-speed moving object.
It in order to move imaging device under small scale, can move in an annular fashion, so as to cyclically treat
Multiple imaging devices can be arranged according to the needs of areas imaging all standing in the axial direction of circulatory motion by surveying image objects.Separately
Outside, imaging device can have multiple viewfinder windows, so as to its carry out circulatory motion when, have always viewfinder window correspond to
Body surface is surveyed, and imaging region of each viewfinder window on object under test surface has intersection, to realize measuring targets
Exhaustive and complete detection during the motion.For example, will be mentioned in subsequent descriptions: eight cameras are along round point
Cloth.Circular 360 ° of circular arcs are divided into 8 regions with identical central angle (45 °).Eight cameras are located at this eight
Region, and the center (or primary optical axis) of each camera is located at middle line (the two of i.e. each region central angle of its corresponding region
Equal portions angular bisector), i.e., primary optical axis is overlapped with angular bisector.There have for only needing local tomography and in unwanted visual characteristic detection to be special
When demand, it can be needed by the imager transverse movement and former rotatable parts of special parameter along moving in the same direction for product line
The region overhead of picture.
In order to make those skilled in the art be more easily performed above scheme, it is further elaborated below.In following example,
Object under test (mobile object or moving object) is illustrated with sheet material.However, it should be understood that other forms
Object under test can also be detected by following detection devices and the subsequent detection method referred to.Other forms above-mentioned
Object under test for example can be wire rod, bulk etc..In addition, the flexural property of sheet material (plate) does not interfere it by the application
The detection device and method addressed carry out Surface testing.
Due to needing to detect to moving object, the motion mode and mode of moving object should be by true in advance
Determine to confirm that it can be applied to the detection device which kind of mode is realized.Corresponding detection device is utilized, imaging is set
It is standby to be moved with detection object with the mode being mutually matched, to reach opposing stationary state.In other words, the inspection in this example
Surveying device is for carrying out Surface testing to according to the mobile object of given pattern further.For a kind of determinand of motor pattern
Body can be detected by using corresponding detection device.
In order to which those skilled in the art are more readily understood and implement detection device in the application example, it is carried out below
Recapitulative description.
1, the detection device proposed in example is flexible sheet-like products high-resolution in a kind of adaptation high-speed motion product type
The device of rate imaging.Its method for using area array cameras synchronous with flexible sheet-like products movement, guarantee camera and flexible product at
As region is imaged in the state of opposing stationary.
In one rotatingcylindrical drum of to be detected section of flexible product setting, flexible product is made to keep one section of circular arc in delivery phase
Motion profile.Area array cameras is mounted on inside rotatingcylindrical drum.In rollers roll, camera does identical angle speed with roller
Degree movement, and flexible product keeps identical angular speed movement in cylinder surface.And camera and product surface have same angular
The velocity interpolation condition of static imaging.The advantages of static imaging is no motion blur, can obtain product surface more high score
The fine structure and information of resolution.
2, the cylindrical body drum apparatus based on above-mentioned example, the cylindrical cylinder of support flexible product can be configured to
Bright material, such as organic glass adapt to the low flexible product of lateral stiffness and keep the straight of transverse direction.
3, the cylindrical body drum apparatus based on above-mentioned example, the cylindrical cylinder of support flexible product, which can not configure, appoints
What material adapts to the good flexible product of lateral stiffness, such as thicker coiled material.When there is no flexible product, the top of cylindrical body roller
Bottom surface is as two circular discs.
4, one or more image cameras are connect in roll body with roller, the circle of each camera its primary optical axis and position
Column radius is overlapped.
5, image camera needs the defect detected to can choose different electromagnetic wave bands imaging phases according to detected product
Machine is provided with single optical filter or the combination of more optical filters in the optical path of imager, is provided with list on the emitting light path of radiation source
One optical filter or the combination of more optical filters are realized by imager optical filter and modulation of the radiation source optical filter to electromagnetic spectrum
Multispectral imaging obtains the characteristic spectrum image of product quality flaw.The radiation source that imager can be arranged the target back side
The transmission potential of transmission is imaged.
6, another scheme is that a camera does reciprocating rotation in roller.
7, the area array cameras adapted under high-speed motion in plate-like product high-resolution imaging detection device that example proposes with
Plate detected surface cocurrent and parallel is mobile, is imaged under opposing stationary environment.
In specific optinal plan, device can have defined below:
1, camera can be rigidly connected with roller, and multiple cameras complete 360 degree of roller along the radial combined visual field in the center of circle
Covering can arrange more cameras along cylinder generatrix direction, realize whole coverings of width direction.
2, camera can be separately formed a camera frame, and camera frame axis and drum shaft are concentric, and camera can be past around drum shaft
It is multiple to move, region, which is detected, with product in reciprocating motion is imaged in the same direction with angular speed rotation period, reverse rotation pair after imaging
Product testing region is rotated with angular speed in the same direction after quasi- adjacent subsequent region, re-imaging.
3, each image is all based on the distortion parameter of camera lens and arc imaging surface carries out geometric correction, then to product
Flaw is identified, is measured, is classified, positioning, and flaw image coordinate is converted to the reference position coordinate of product, and flaw is sat
Mark is sent to control system together with product defect information, controls the camera of subsequent higher resolution as needed by control system
More fine flaw information is obtained, and is performed corresponding processing.
4, cylindrical body roller can also be deformed into polygon prism, each prismatic surface correspond to a camera of the direction of motion at
As visual field.The flexible planar product that this device is suitble to recoverable force good.
5, the roller that polygon prism roller can be set 2 or more fails the region of imaging to first roller, leads to
Imaging is completed in the variation for crossing second roller phase when licking second roller.
6, when needing carry out image checking two-sided to product, another set roller is needed, another side is formed above-mentioned same
The opposing stationary imaging of angular speed.
7, for non-flexible band-type product, bulk product can be connected on product transmission belt by physical means, such as
Semiconductor crystal wafer etc. forms detection camera and detected product in the same direction with angle speed by being in contact for flexible conveyer belt and roller
It spends under rotary state, it is opposite to be in static imaging.
In addition, obtaining clearly after image, can using image analysis software or combine hardware appropriate to image into
Row processing, situations such as to obtain more specific and specific body surface flaw, defect.
Also referring to Fig. 1 to Fig. 4.
For generally, the detection device in embodiment includes imager 201 and rotating mechanism.As its name suggests, imager
201 be for the equipment to image objects.Rotating mechanism is for driving imager 201 to be moved according to set mode
Equipment.Imager 201 during being rotated mechanism driving, can when certain empty interval (detection window) to moving synchronously
Object detected.
Wherein, imager 201 is configured to that the surface of mobile object 100 is imaged.Imager 201 can be various
Video camera, video camera, camera etc. imaging device or other applicants are known or commercially available can clap object
According to equipment.Imager 201 can be single structure, and have multiple cells/devices found a view；Alternatively, imager 201 be by
The combination of multiple existing devices.By design above-mentioned, imager 201 can be imaged with the multiple regions on measuring targets surface,
And correspondingly there is multiple images (can be video) to obtain structure.
It should be pointed out that imager has matched radiation source.The radiation source can irradiate mobile object (imaging
Target) and in the specific region (imaging region) of mobile object.Therefore, it has been observed that imager 201 can be to mobile object
100 are imaged, for example, surface reflection energy to the mobile object or being imaged from the energy that the back side transmits.
Radiation source and imager and imaging region are in desired spatial relationship, are provided with list in the optical path of imager
One optical filter or more optical filters combine, and single optical filter or the combination of more optical filters are provided on the emitting light path of radiation source.It is logical
Cross the method or imaging that optical filter is set in the optical path of imager and/or optical filter is set on the emitting light path of radiation source
Device is applied in combination with radiation source optical filter, realizes multispectral imaging, obtains the characteristic spectrum image of product quality flaw.At
As device and radiation source are arranged with different spatial attitudes, when target surface is vertically imaged, radiation source using it is biggish enter
Firing angle avoids the mirror-reflection of glossy surface material from interfering, enhances the information of surface blemish.
Further, detection device may include image processor, controller, capture apparatus.
Wherein, image processor is configured to handle the image generated by imager.Capture apparatus can be high resolution
In the filming apparatus of imager, or referred to as another type of imager.In other words, for entire detection device,
Imager can have 1 group or multiple groups, obtain detected object difference viewing angle and more geometry to be configured as needed
Resolution ratio and multispectral image.
Wherein, controller can get the information of the processed image fed back by image processor, and control capture apparatus
Flaw analysis is made to processed image.For example, imager obtain each image all by based on camera lens distortion parameter and
Arc imaging surface carries out geometric correction, is then identified, measured, classified to product defect, positions, and the image of flaw is sat
Mark is converted to the reference position coordinate of product, sends control system together with product defect information for flaw coordinate, is by control
It is high that the camera (capture apparatus) with higher resolution that system control is arranged below carries out higher resolution part to certain flaws
Resolution imaging obtains more fine flaw information.
Controller can be the various electronic components for being able to carry out certain data storage and processing or its set.For example,
Central processing unit (CPU), micro-control unit (MCU), programmable logic controller (PLC), programmable automation controller
(PAC), industrial control computer (IPC), field programmable gate array (Field-Programmable Gate Array,
) or computer equipment etc. FPGA.
Rotating mechanism is capable of providing impetus and the fixation, accommodation space/region of the connection of imager 201.In other words, it is imaged
Device 201 is attached to rotating mechanism.It has been observed that rotating mechanism is able to carry out rotation, and correspondingly offer driving force makes to be imaged
Device 201 is driven pattern further desirably.Rotating mechanism can be independent single movement component, be able to carry out rotation
It moves (360 °).I.e. it has determining and fixed rotation (rotation) center.Alternatively, be also possible to being capable of phase for rotating mechanism
The mutually assembly of independent or cooperation multiple moving links.For example, rotating mechanism includes two rotary parts.Two rotating parts
Part can move (or separately rotating, and can according to need and carry out cooperative movement) together.
For functionally, rotating mechanism can drive imager 201 to move synchronously with mobile object 100.Rotating machine
It not with mobile object 100 is scale whether the movement of structure, i.e., it can independently be freely rotated.When mobile object 100 moves,
Rotating mechanism can be rotated by selection, can also be without rotation.Generally, rotating mechanism can be with mobile object 100
Setting in motion or rotating mechanism are in advance in 100 setting in motion of mobile object together.Similarly, rotating mechanism can be with motive objects
Stop motion or rotating mechanism lag behind 100 stop motion of mobile object to body 100 together.
And in order to allow imager 201 to obtain clear (without the motion blur) image to mobile object 100, therefore,
Rotating mechanism can keep imager 201 and the region to be imaged of mobile object 100 opposing stationary, to obtain so that imager
201 obtain the image of the not motion blur to the region to be imaged of mobile object 100.Wherein, mobile object 100 is to be imaged
Region can be the surface of its whole surface or part.And correspond to imaging region selection, then can correspondingly at
As the quantity of device 201, layout type account for, and arranged accordingly.For example, at any time, imager 201 at
As region includes the whole region in the section of mobile object 100.
According to the structure type of mobile object 100, rotating mechanism is configured to corresponding structure and imager 201 also carries out
Corresponding layout, so as to which imager 201 is made to obtain appropriate imaging region, and allows the imaging region to be covered on motive objects
100 surface of body.According to the differentiation of motion profile, imager 201 can be rotated the movement of the first track of mechanism drives edge or second
Track movement.Wherein, the first track is the first closed-loop of circumference.The diameter of a circle size of first closed-loop can be as required
Design, the application are not specifically limited.Second track is the second closed-loop of the combination composition of circular arc and straight line.In a kind of example
In, the second closed-loop in keyway (slot to match with key is processed on axis or in hole, for installation key, to transmit torque,
This slot is just keyway) type structure, synchronous belt is a kind of common structure.Alternatively, the description as a kind of image, the second closing
Ring is the shape that rectangular two opposite broadsides have been made with tangent arc formation, and rectangle long side is a kind of with rigidity
Structure.
As an example, rotating mechanism includes rotor, the quantity of rotor can be it is one or more (such as two, three,
Four, five etc. quantity).Rotating mechanism, which can be, only has rotor；Alternatively, rotating mechanism includes except rotor
Other component/components etc..Other such components can be connector (if bolt, nut, clip etc.).Based on imager
201 layout needs, and imager 201 (one or more) can be connected directly or indirectly to rotor.
It is such as shown refering to fig. 1 as optional (alternative) specific implementation: rotating mechanism include sports ring 204,
First rotating member 202, the second rotating member 203.Also, the first rotating member 202, the second rotating member 203 are arranged and strained movements ring
204.Wherein, sports ring 204 can choose as the belt or crawler belt of annular, and crawler belt is rigid in the vertical ring-shaped direction of motion,
Convenient for keeping the Installation posture of imager to stablize.Correspondingly, the first rotating member 202 and the second rotating member 203 can choose as skin
Belt wheel (synchronous belt).In such an example, the diameter as the first rotating member 202 of belt pulley and the second rotating member 203 can
Be it is identical, be also possible to different.Such as, the diameter of the first rotating member 202 is greater than the second rotating member 203；Alternatively, the first rotation
The diameter of part 202 is less than the second rotating member 203.Wherein, the first rotating member 202 and the second rotating member 203 are separately selected from
Driving member or driven member.For example, rotating member is the output shaft for being connected to motor, and rotated by output shaft driving.Or
Person, rotating member by bearing install a support shaft, the rotating member as driving member be driven through bearing be installed as by
The rotating member of dynamic component.When the first rotating member 202 and the second rotating member 203 are driven member, it is thus evident that need in addition to match
Standby driving device, such as various motors, are attached transmission by shaft coupling etc..
For the exemplary rotating mechanism of above belt pulley composite structure, imager 201 is connected to sports ring 204.At
As device 201 can have multiple, and it is evenly distributed in the length range of sports ring 204.Therefore, when two rotating members are tensioned
When, the region between the first rotating member 202 and the second rotating member 203, sports ring 204 forms linear under rigid support
Shape, in this way, being connected to the imager 201 in the region of sports ring 204 can also move according to trends of straight line within tolerance.
In the following distance (can set freely, be advisable with not contacted with imager 201) of sports ring 204, object under test
(mobile object 100) can also be moved according to trends of straight line.Region between the first rotating member 202 and the second rotating member 203
Imager 201 and when object under test movement velocity having the same (rate, direction), imager 201 is phase with object under test
To static.Based on this, the first rotating member 202 and the second rotating member 203 can common rotation and drive sports ring 204 and drive
Imager 201 is moved synchronously with mobile object 100, and imager 201 is enable to obtain to the region to be imaged of mobile object 100
There is no the image of motion blur.
In above example, rotor can be in a manner of the first rotating member 202, the second rotating member 203 and provide
And implement.Correspondingly, imager 201 is (via middleware) to be connected to rotor indirectly.I.e. imager 201 passes through fortune
Rotating ring 204 (middleware i.e. above-mentioned) is connected to the first rotating member 202 and the second rotating member 203.
As shown in Fig. 2, by Fig. 1 shows detection device can be used in implementing following detection methods: for that should not be bent
Plate-like product surface detection, in the top of plate setting with plate in the same direction, the synchronous belt of parallel motion, area array cameras is pacified
On synchronous belt, control plate is identical as synchronous belt movement velocity, is imaged, can obtain under camera and plate relative static conditions
Obtain the high-definition image of not motion blur.Other holding area array cameras and the movement of detected plane synchronization make camera and are detected
The opposing stationary imaging method of plane is surveyed, all in the column of protection.It should be noted that dotted arrow indicates the first rotation in Fig. 1
The rotation direction of part 202, the second rotating member 203；Solid arrow indicates the rotation direction of movement band；Hollow arrow indicates motive objects
The direction of motion of body.
Another combination as imaging device is the lateral three-dimensional imaging group constituted based on more cameras to test object
It closes, can parse the 3 D stereo information for calculating measurand.Camera lens can select common lens according to imaging requirements
Or extraordinary camera lens, such as telecentric mirror head etc..
As another optional (alternative) specific implementation, as refering to shown in Fig. 3: rotating mechanism includes first
Revolving part 300.First revolving part 300 has the double-layer structure of internal layer and outer layer.That is, the first revolving part 300 includes being mutually matched
The first inner ring body 302 and the first outer ring body 301 being connected as one, and the two is cylinder-shaped, cylindrical structure.First inner ring
Body 302 and the first outer ring body 301 are coaxial, and can synchronously rotate.Imager 201 is connected to the first inner ring body 302 and direction
First outer ring body 301 (obviously, the diameter of the diameter of the first inner ring body 302 and the first inner ring body 302 is appropriately selected, so as to
The space that enough imagers 201 are installed can be reserved).Furthermore, it is to be appreciated that: since imager 201 is connected in first
Circle body 302, and between the first inner ring body 302 and the first outer ring body 301.Meanwhile also want can be to motive objects for imager 201
Body 100 is imaged, and therefore, notch can be set in the first outer ring body 301, so that the visual field 200 of imager 201 can not pass through with hindering
Notch and directly to mobile object 100 be imaged；Alternatively, the first outer ring body 301 can be made using transparent material, to become
As the visual field 200 of device 201 can directly be imaged mobile object 100.Alternatively, the first outer ring body 301 has by transparent material system
The transmittance section of work.The transmittance section is the part of the first outer ring body, and is located at the field rays path of imager.Transparent material can be with
It is transparent resin, organic glass etc..Similarly, the second outer ring body also can have same or like structure.
For the rotating mechanism of this spline structure, mobile object 100 can approach or be attached at the movement of the first outer ring body 301.
It can be attached at the scheme of the first outer ring body 301 movement in mobile object 100, the first outer ring body 301 can also have appropriate
Width is so as to accommodate mobile object 100 (such as banding or sheet object).Further, the first outer ring body 301 can be set recessed
Slot or card slot, so as to which mobile object 100 is allowed to stablize, smoothly move.
In conjunction with imager 201 and above-mentioned rotating mechanism, the first revolving part 300 can be moved synchronously with mobile object 100,
The image for the not motion blur for enabling imager 201 to obtain to the region to be imaged of mobile object 100.
Based on above scheme, in further adjustment technology, as shown in figure 3, rotating mechanism includes the second revolving part
400.I.e. rotating mechanism has the first revolving part 300 and the second revolving part 400.Wherein, the second revolving part 400 includes the company of being mutually matched
It is connected in integrated the second inner ring body 402 and the second outer ring body 401, the second inner ring body 402 is connected with the second outer ring body 401 of direction
The imager 201 arranged of mode.In other words, the first revolving part 300 and the second revolving part 400 can have the same or similar
Structure combination and structure feature cooperation etc., but the size of the two freely can be combined and be adjusted (for example, the first inner ring
Body 302 and the second inner ring body 402 be it is isodiametric/can also be with non-equal diameter, the first outer ring body 301 and the second outer ring body 401
Isodiametric/can also be with non-equal diameter.).
For the scheme with the first revolving part 300 and the second revolving part 400, the first outer ring body 301 and the second outer ring body
401 arrange according to default spacing, so that the opposite two sides of mobile object 100 can be imaged in imager 201.That is, the
One outer ring body 301 and the second outer ring body 401 can be distributed in the two sides of mobile object 100.In this way, the first revolving part 300 and
Two revolving parts 400 common rotation and can drive imager 201 to move synchronously with mobile object 100, and imager 201 is enable to obtain
Obtain the image of the not motion blur to the region to be imaged of mobile object 100.In addition, in such an example, mobile object
100 (sheet materials) can be arranged between the first outer ring body 301 and the second outer ring body 401 with "the" shape.
In above-mentioned scheme, the first revolving part 300 and the second revolving part 400 are provided as the example of rotor
's.Correspondingly, imager 201 is directly connected between rotor.I.e. different multiple imagers 201 are connected to first
Second inner ring body 402 of the first inner ring body 302 of revolving part 300, the second revolving part 400.
In such as preceding literature record and structure shown in Fig. 3, detection device has total 16 imagers (face battle array phase
Machine), the first revolving part 300 and the second revolving part 400 are respectively provided with eight imagers.In another embodiment, such as Fig. 4 institute
Show, detection device, which has, amounts to 2 imagers (area array cameras), and the first revolving part 300 and the second revolving part 400 are respectively provided with 1
A imager.
Cooperatively with above-mentioned detection device, also proposed in example a kind of mobile object 100 detection method (or:
Adapt to the method that flexible sheet-like products surface high resolution is imaged under high-speed motion), it is carried out for the surface to mobile object 100
Detection.
Detection method includes:
The motor pattern of mobile object 100 is obtained, motor pattern includes movement rate and the direction of motion.
Imager 201 is set, enables imager 201 according to motor pattern with the side static relative to mobile object 100
Formula moves synchronously.
It is imaged by surface of the imager 201 to mobile object 100.
Detection structure as shown in connection with fig. 3, for the detection device with the first revolving part 300 and the second revolving part 400
Scheme, and (each revolving part includes multiple cameras, and each camera in a revolving part can lead to multiple imagers 201
It crosses the first power supply signal connection slip ring 602 (or being the first signal connection slip ring) and carries out data communication and/or power supply connection；Phase
Answer ground another revolving part in each camera can by second source signal connection slip ring 601 carry out data communication and/or
Power supply connection), detection method can be implemented as follows.Roller (the first revolving part 300 and the second revolving part 400) is in control system control
Under system, there is linear velocity identical with flexible strip to be detected, camera (imager 201) and roller are rigidly connected, and camera follows
Roller rotation, flexible strip to be detected is covered under tension on the circumference of roller, and camera subsequently enters imaging area, keep with to
Detection flexible strip is imaged under opposing stationary relationship.The frame width formula image of polyphaser covering completes the whole to mobile band
Imaging.Continuous image has overlay region.Each image carries out oneself of strip surface flaw after distortion of projection corrects
Classification and measurement, positioning to surface blemish are completed in dynamic detection.The above-mentioned image by geometric correction can be inlayed again, divide
It cuts, convenient for filing and establishing flaw information bank, provides operating parameter for product quality processing, for certain type of flaw,
Can be controlled based on coordinate information the camera of subsequent higher resolution with opposing stationary method carry out higher resolution at
Picture.
Detection device as shown in connection with fig. 4, for the detection device with the first revolving part 300 and the second revolving part 400
Scheme, and there are multiple imagers 201 (each revolving part includes single camera), detection method can be implemented as follows.Roller exists
Under control system control, with linear velocity identical with flexible strip to be detected, the shafting of camera and roller is slidably connected, camera
Tilting movement is done around drum shaft, camera is synchronous with roller rotation when just putting, and keeps opposite with flexible strip imaging area to be detected
It is imaged under static relation, the camera backswing after imaging, after returning to scheduled starting point, camera enters the positive pendulum stage.Such as
This cycle operation completes that the frame width formula of mobile band is imaged.Continuous image has overlay region.Each image is by throwing
After shadow distortion correction, the automatic detection of strip surface flaw is carried out, completes classification and measurement, positioning to surface blemish.It is above-mentioned
Information provides operating parameter for product treatment.
Detection method and device more than corresponding to additionally provide a kind of detection system in example comprising image procossing
Device, detection device as the aforementioned.Detection device is constructed according to above structure, and is carried out according to preceding method using to be examined
Survey the image of object.Further, image is obtained by detection device to be handled by image processing apparatus, examined with will pass through analysis
The surface blemish situation for surveying object (whether there is flaw；If there is flaw, then the distribution situation of flaw can be provided, it is such as close
Degree, position, form etc. information).Image processing apparatus can be the computer equipment with corresponding image processing program.It should
Image processing apparatus can carry out automatic processing image with human assistance or by process control.
Based on above-mentioned detection device, a kind of detection system can be provided in example.Detection system includes multiple above-mentioned
Detection device, and whole detection devices cooperates in multistage arrangement.Wherein, the flaw of previous stage detection device detection can
It is optional by corresponding geometric resolution and/or multispectral imaging by the detection device of next stage, to measure all product flaws
Defect parameter.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. a kind of detection device, for carrying out Surface testing to according to the mobile object of given pattern further, which is characterized in that institute
Stating detection device includes:
Imager and radiation source, radiation source irradiation imageable target and region, the imager are configured to the movement
The surface reflection energy of object is imaged from the energy that the back side transmits；
Rotating mechanism, the imager are attached to the rotating mechanism, and the rotating mechanism is configured to drive the imager
As the mobile object moves synchronously, and keep the region to be imaged of the imager and the mobile object opposing stationary,
So that the imager obtains the image of the not motion blur to the region to be imaged of the mobile object.
2. detection device according to claim 1, which is characterized in that the rotating mechanism includes rotor, the imaging
Device is connected directly or indirectly to the rotor, and the imager can be moved by first track of rotating mechanism drives edge
Or the second track movement, wherein first track is the first closed-loop of circumference, and second track is circular arc and straight line
Combine the second closed-loop constituted.
3. detection device according to claim 1, which is characterized in that radiation source and imager and imaging region are in expectation
Spatial relationship, single optical filter or the combination of more optical filters, the emergent light of radiation source are provided in the optical path of imager
Road is provided with single optical filter or the combination of more optical filters.
4. a kind of detection system, which is characterized in that the detection system includes multiple such as any one of claims 1 to 3 institute
The detection device stated, whole detection devices cooperate in multistage arrangement；
Wherein, the flaw of previous stage detection device detection can be differentiated by corresponding geometry by the detection device of next stage is optional
Rate and/or multispectral imaging, to measure all product defect parameters.
5. a kind of detection device, for carrying out Surface testing to according to the mobile object of given pattern further, which is characterized in that institute
Stating detection device includes:
Imager, the imager are configured to that the surface of the mobile object is imaged；
Rotating mechanism, the rotating mechanism include sports ring, the first rotating member, the second rotating member, first rotating member, second
Rotating member is arranged and is tensioned the sports ring, and the imager is connected to the sports ring, first rotating member and described
Two rotating members can common rotation and drive the sports ring and the imager driven to move synchronously with the mobile object, make
The imager can obtain the image of the not motion blur to the region to be imaged of the mobile object.
6. detection device according to claim 5, which is characterized in that first rotating member and second rotating member point
Not independently selected from driving member or driven member.
7. a kind of detection device, for carrying out Surface testing to according to the mobile object of given pattern further, which is characterized in that institute
Stating detection device includes:
Imager, the imager are configured to that the surface of the mobile object is imaged；
Rotating mechanism, the rotating mechanism include the first revolving part, and first revolving part includes being mutually matched to be connected as one
The first inner ring body and the first outer ring body, the imager is connected to first inner ring body and towards first outer ring body,
The mobile object can approach or be attached at the first outer ring body movement, and first revolving part can be with the motive objects
Body moves synchronously, the figure for the not motion blur for enabling the imager to obtain to the region to be imaged of the mobile object
Picture.
8. detection device according to claim 7, which is characterized in that the rotating mechanism includes the second revolving part, described
Second revolving part includes being mutually matched the second inner ring body and the second outer ring body being connected as one, and second inner ring body is connected with
The imager arranged in a manner of towards second outer ring body；
First outer ring body and second outer ring body are arranged according to default spacing, so that the imager can be to the shifting
The opposite two sides of animal body are imaged；
First revolving part and second revolving part common rotation and can drive the imager with the mobile object
It moves synchronously, the image for the not motion blur for enabling the imager to obtain to the region to be imaged of the mobile object.
9. detection device according to claim 8, which is characterized in that first inner ring body and second inner ring body are
Isodiametric or non-isodiametric, first outer ring body and second outer ring body are isodiametric or non-isodiametric.
10. a kind of detection method of mobile object, is detected for the surface to the mobile object, which is characterized in that institute
Stating detection method includes:
The motor pattern of the mobile object is obtained, the motor pattern includes movement rate and the direction of motion；
Imager is set, enables the imager according to the motor pattern in the mode static relative to the mobile object
It moves synchronously；
It is imaged by surface of the imager to the mobile object.
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| PCT/CN2020/071982 WO2020147713A1 (en) | 2019-01-15 | 2020-01-14 | Detection device, system and method |
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