CN109313070A - The method and system of industrial vision detection vibration - Google Patents
The method and system of industrial vision detection vibration Download PDFInfo
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- CN109313070A CN109313070A CN201780035743.4A CN201780035743A CN109313070A CN 109313070 A CN109313070 A CN 109313070A CN 201780035743 A CN201780035743 A CN 201780035743A CN 109313070 A CN109313070 A CN 109313070A
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- industrial vision
- detection zone
- vision detection
- band
- moire fringes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
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- Length Measuring Devices By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention discloses a kind of method and system of industrial vision detection vibration, this method comprises: being shot by filming apparatus and acquiring the moire fringes generated on the image using the band for the high frequency distribution that industrial vision detection zone is arranged in；It analyzes and judges whether the moire fringes change, and then determine whether the industrial vision detection zone is vibrated.In this way, the present invention can simply and effectively carry out vibration detection, and testing cost is not high.
Description
Technical field
The invention discloses be related to industrial vision system, detect the method for vibration more particularly to a kind of industrial vision and be
System.
Background technique
Industrial vision system be for examining automatically, work pieces process and assembly automation and the control of production process and prison
Depending on image recognition machine.Vision-based detection is exactly to replace human eye with machine to measure and judge.Vision-based detection, which refers to, passes through machine
Device vision products will be ingested target and be converted into picture signal, send dedicated image processing system to, according to pixel distribution and
The information such as brightness, color, are transformed into digitized signal；Picture system carries out various operations to these signals to extract the spy of target
Sign, and then live device action is controlled according to the result of differentiation.
It is sometimes very harsh to the vibration of environment when industrial vision detects.Industrial vibration is easy to influence the work of device structure
Make, also causes device structure to generate fatigue rupture, influence its service life, even result in the damage of structure Instrumental.Therefore, it needs
It carries out vibration suppression or some detection parameters etc. is changed according to vibration, and vibration detection is to carry out the measures such as vibration suppression
Prerequisite.The method of vibration detection can be divided into contaction measurement method and non-contact detection method.Common contact
Formula detection method has using piezoelectric ceramics, acceierometer sensor, gyro sensor etc..Contactless measurement method packet
Include the methods of measuring method, photoelectrical position sensor, machine vision.
But present inventor has found in long-term R&D process, and in industrial vision detection, above method inspection
It surveys at high cost.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of system and method for industrial vision detection vibration, Neng Goujian
Vibration detection is singly effectively performed, and testing cost is not high.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: a kind of industrial vision detection vibration is provided
Dynamic method, which comprises shot by filming apparatus and acquire the high frequency for utilizing and industrial vision detection zone being set
The band of distribution and the moire fringes generated on the image；It analyzes and judges whether the moire fringes change, and then determine institute
State whether industrial vision detection zone is vibrated.
In order to solve the above technical problems, another technical solution used in the present invention is: providing a kind of industrial vision detection
The system of vibration, the system comprises the band of high frequency distribution, filming apparatus and analytical equipments, wherein the band setting exists
Industrial vision detection zone, and can be vibrated with the vibration of the industrial vision detection zone, when the band is by the shooting
When device is shot, moire fringes can be generated on the image that shooting, collecting obtains；The filming apparatus setting can shoot the item
The position of band, for band described in captured in real-time, to acquire the moire fringes generated on the image using the band；Described point
Analysis apparatus is connect with the filming apparatus, for analyzing and judging whether the moire fringes change, and then determines the work
Whether industry vision-based detection region vibrates.
The beneficial effect of the application is: being in contrast to the prior art, the side of industrial vision detection vibration of the invention
Method includes: to shoot and acquire by filming apparatus scheming using the band for the high frequency distribution that industrial vision detection zone is arranged in
As the moire fringes of upper generation；It analyzes and judges whether the moire fringes change, and then determine the industrial vision detection zone
Whether domain vibrates.Due to being arranged band in industrial vision detection zone, which, can be in shooting, collecting when being taken
Moire fringes are generated on obtained image, analyze and judge whether the moire fringes change, and then determine industrial vision detection zone
Whether domain vibrates, and in this way, vibration detection can be simply and effectively carried out, and a band is only arranged, to it
It is shot, testing cost is not high.
Detailed description of the invention
In order to more clearly explain the technical solutions in the embodiments of the present application, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are only some examples of the present application, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.Wherein:
Fig. 1 is the structural schematic diagram of one embodiment of system of industrial vision detection vibration of the present invention；
Fig. 2 is the structural schematic diagram of another embodiment of system of industrial vision detection vibration of the present invention；
Fig. 3 is the structural schematic diagram of the another embodiment of system of industrial vision detection vibration of the present invention；
Fig. 4 is the structural schematic diagram of the another embodiment of system of industrial vision detection vibration of the present invention；
Fig. 5 is the flow chart of one embodiment of method of industrial vision detection vibration of the present invention；
Fig. 6 is the flow chart of another embodiment of method of industrial vision detection vibration of the present invention；
Fig. 7 is the flow chart of the another embodiment of method of industrial vision detection vibration of the present invention.
Specific embodiment
Below in conjunction with the attached drawing in embodiment of the present invention, the technical solution in embodiment of the present invention is carried out clear
Chu is fully described by, it is clear that described embodiment is only some embodiments of the invention, rather than whole realities
Apply mode.Based on the embodiment in the present invention, those of ordinary skill in the art institute without making creative work
The every other embodiment obtained, belongs to the scope of protection of the invention.
Refering to fig. 1, Fig. 1 is the structural schematic diagram of one embodiment of system of industrial vision detection vibration of the present invention, this is
System 100 includes: the band 10, filming apparatus 20 and analytical equipment 30 of high frequency distribution.
Band 10, which is arranged, (does not represent the specific setting position of band 10 in industrial vision detection zone 200 shown in Fig. 1
Set, be only merely a kind of signal), the band 10 of high frequency distribution refers to that dense distribution is textured or striped (texture or striped at interval
Shape without limitation) band；Industrial vision detection zone 200 is arranged in band 10, when industrial vision detection zone
When environment around 200 vibrates, it will drive industrial vision detection zone 200 and vibrate, carry out regarding setting in industry
Feel detection zone 200 band vibrated with the vibration of industrial vision detection zone 200, when band 10 be taken device 20 shoot
When, moire fringes can be generated on the image that shooting, collecting obtains.
Moire fringes are one kind in the equipment such as digital camera or scanner, the item for the High-frequency Interference that photosensitive element occurs
Line is a kind of irregular striped of high-frequency that image can be made colour occur.Briefly, moire fringes are one kind of beat principle
Performance.Mathematically, the close constant amplitude sinusoid superposition of two frequencies, the amplitude of composite signal will be according to the difference of two frequencies
Variation.Equally, the slightly discrepant stripe stack of spatial frequency, since the difference of fringe spacing, overlapping positions can be deviated gradually,
It will form beat.If the spatial frequency of striped is close in the spatial frequency and image of photosensitive element pixel, will generate mole
Line.Therefore, can it is photosensitive, occur High-frequency Interference element, can be used as band, such as: the screen of pixelation, high frequency
, resolution ratio is very high, elements of figure, etc. of the interval all many regular shapes of dense distribution.
In the present embodiment, the spatial frequency of the pixel of the photosensitive element of sensor and band are being schemed in filming apparatus 20
The spatial frequency of striped is close as in, then generates moire fringes.
Industrial vision detection zone 200 refers to the region for industrial vision detection.The system needs to detect industrial vision
Whether detection zone 200 is vibrated, and therefore, the band 10 for detection should can be with the vibration of industrial vision detection zone 200
It moves and vibrates, whether vibrated by test strip in this way, and detect whether industrial vision detection zone 200 shakes
It is dynamic, further determine that whether the ambient enviroment of industrial vision detection zone 200 vibrates.
The position that can shoot band 10 is arranged in filming apparatus 20, is used for captured in real-time band 10, utilizes band to acquire
10 and the moire fringes that generate on the image.
Filming apparatus 20 is for shooting the moire fringes for utilizing band 10 and generating on the image, therefore, filming apparatus
20 setting position should be the position that can shoot band 10.When actual setting, the position of the setting of filming apparatus 20
It does not influence the normal operation of industrial vision detection zone 200 usually, and band 10 can be shot.
In one embodiment, filming apparatus 20 can be camera, can further utilize existing filming apparatus in this way,
It, can be with save the cost without optional equipment filming apparatus 20.
It should be noted that the distribution of collected moire fringes be at a distance from filming apparatus 20 is current between band 10,
The discretization of the spatial frequency signal of the pixel of photosensitive element and current striped in the picture in the sensor of filming apparatus 20
What the parameter of this three of the position of band 10 of spatial frequency signal discretization determined.When between filming apparatus 20 and band 10 when
The two parameters of the discretization of spatial frequency signal of the pixel of photosensitive element are true in the sensor of preceding distance, filming apparatus 20
After fixed, the distribution of moire fringes only with currently the position of band 10 of spatial frequency signal discretization of striped is related in the picture.
Once 200 ambient enviroment of industrial vision detection zone vibrates, industrial vision detection zone 200, which is affected, also to be vibrated, into
And the position of band 10 is driven to compare there is no vibrating the position of preceding article band 10 to have faint variation, it brings in image mole
The variation of line can clearly.In practical applications, according to the requirement of detection, between adjustable filming apparatus 20 and band 10
The discretization of the spatial frequency signal of the pixel of photosensitive element and currently exist in the sensor of current distance, filming apparatus 20
At least one of the parameter of this three of the position of band 10 of the spatial frequency signal discretization of striped, rubs in image to adjust
The variation degree of your line, thus to meet the needs of actually detected.
Such as: if it is intended to increasing the changing sensitivity of detection moire fringes, point of the camera lens of filming apparatus 20 can be increased
Resolution, resolution ratio is higher, then the changing sensitivity for detecting moire fringes is higher；Alternatively, changing the position of filming apparatus 20, because clapping
The angle for taking the photograph device 20 and band 10 will lead to moire fringes in image, by changing the position of filming apparatus 20, and changes and claps
The angle of device 20 Yu band 10 is taken the photograph, and then changes the changing sensitivity of detection moire fringes；Alternatively, changing the coke of filming apparatus 20
Away from；Etc..
Analytical equipment 30 is connect with filming apparatus 20, is generated in the picture when filming apparatus 20 is collected using band 10
Moire fringes after, be sent to analytical equipment 30, analytical equipment 30 is according to moire fringes in 20 acquired image of filming apparatus, analysis
And judge whether the moire fringes generated in the picture using band 10 are changed, and then determine industrial vision detection zone
Whether 200 vibrate.
In practical applications, when at a distance from filming apparatus 20 is current between band 10, in the sensor of filming apparatus 20
After the two parameters of the discretization of the spatial frequency signal of the pixel of photosensitive element determine, the distribution of moire fringes and item on image
Position with 10 is related.Once 200 ambient enviroment of industrial vision detection zone vibrates, industrial vision detection zone 200 by
It is also vibrated to influence, and then drives the position of band 10 compared to there is no vibrating the position of preceding article band 10 to have faint change
Change, the variation for bringing moire fringes on image can clearly.Therefore, analytical equipment 30 can compare on the image of this acquisition
The difference between moire fringes (i.e. there is no collecting the moire fringes on image when vibration) on moire fringes and standard picture, i.e.,
It can determine whether the moire fringes generated on the image using band 10 are changed, and then determine industrial vision detection zone
Whether 200 vibrate.
The industrial vision of embodiment of the present invention detects the band that the system vibrated includes high frequency distribution, filming apparatus and divides
Analysis apparatus, wherein the band is arranged in industrial vision detection zone, and can with the vibration of the industrial vision detection zone and
Vibration, when the band is shot by the filming apparatus, can generate moire fringes on the image that shooting, collecting obtains；The bat
Take the photograph device and the position that can shoot the band be set, for band described in captured in real-time, with acquisition using the band and
The moire fringes generated on image；The analytical equipment is connect with the filming apparatus, for analyzing and judging that the moire fringes are
It is no to change, and then determine whether the industrial vision detection zone is vibrated.Due to being arranged band in industrial vision
Detection zone, the band can generate moire fringes when being taken on the image, when take using band and generate on the image
Moire fringes after, analyze and judge whether the moire fringes change, so determine industrial vision detection zone whether shake
It is dynamic, in this way, can simply and effectively carry out vibration detection, and a band is only set, take pictures to it,
Testing cost is not high.
In one embodiment, band 10 is arranged in around industrial vision detection zone 200.Band 10 is arranged in work
Around industry vision-based detection region 200, on the one hand conveniently detects whether to generate vibration, on the other hand will not influence industrial view
Feel the normal operation of detection zone 200.
Further, in conjunction with referring to fig. 2, in one embodiment, a left side for industrial vision detection zone 200 is arranged in band 10
Right two sides.
In one embodiment, in order to preferably acquire the moire fringes generated on the image using band 10, shooting is filled
Set 20 positions that face industrial vision detection zone center 200 is set.
In the present embodiment, band 10 is arranged in around industrial vision detection zone 200, and filming apparatus 20 is arranged
In the position at face industrial vision detection zone center 200, so that band 10 is located at the edge in 20 visual field of filming apparatus, in
Heart district domain is as collected object, when the vibration because of ambient enviroment vibrates industrial vision detection zone center 200, claps
It takes the photograph between device 20 and collected central area and relative displacement occurs, then filming apparatus 20 can be detected using band and in image
The variation of the moire fringes of upper generation can determine whether to vibrate in this way.
Wherein, analytical equipment 30 is also used to according to the changed variable quantity of moire fringes, and then determines industrial vision detection
The variable quantity that region 200 vibrates.
It is control with the moire fringes on standard picture, general linear point is carried out to the changed variable quantity of moire fringes
Section, according to the variable quantity for the moire fringes that detected, so that it may probably know the variable quantity of vibration.
It in one embodiment, can be preparatory to industrial vision detection zone 200 in order to accurately determine the variable quantity vibrated
Different, known oscillation intensity is provided, under these different, known oscillation intensities, detects the variation of moire fringes respectively,
Corresponding relationship is made according to the variation of different, known oscillation intensity and the corresponding moire fringes that detected, and is protected
It leaves and.Analytical equipment 30 is used to pass through the relationship between the variable quantity of moire fringes and the variable quantity of vibration prestored, Jin Ergen
According to the changed variable quantity of moire fringes, and determine the variable quantity that industrial vision detection zone 200 is vibrated.The change of moire fringes
Relationship between change amount and the variable quantity of vibration can be linear relationship, is also possible to other functional relations, needs according to reality
The detection on border determines.
In conjunction with refering to Fig. 3, in the present embodiment, the system further include: adjustment device 40.
Adjustment device 40 is connect with industrial vision system 300 and analytical equipment 30 respectively, for true according to analytical equipment 40
The variable quantity of fixed vibration adjusts the detection parameters of industrial vision system 300.
In this way, the detection parameters of industrial vision system 300 can be made to be more in line with actual testing conditions.
In conjunction with referring to fig. 4, in the present embodiment, the system further include: warning device 50.
Warning device 50 is connect with analytical equipment 30, for determining that industrial vision detection zone 200 is sent out when analytical equipment 30
When raw vibration, alarm signal is issued.And then caution signal can be provided to entire vision assembly line, so that operation can be done immediately
Corresponding adjustment out.
It is the flow chart of one embodiment of method of industrial vision detection vibration of the present invention referring to Fig. 5, Fig. 5, needs to illustrate
, the method for present embodiment can be using above-mentioned system or other systems for using the Method And Principle of present embodiment
It executes, the detailed description of related content refers to above system part, no longer superfluous herein to chat.Wherein, this method comprises:
Step S101: being shot by filming apparatus and is acquired and is utilized the high frequency distribution that industrial vision detection zone is arranged in
Band and the moire fringes generated on the image.
Step S102: analyzing and judges whether the moire fringes change, and then whether determines industrial vision detection zone
It vibrates.
Embodiment of the present invention, which is shot and acquired by filming apparatus, utilizes the high frequency that industrial vision detection zone is arranged in
The band of distribution and the moire fringes generated on the image；It analyzes and judges whether the moire fringes change, and then determine industry
Whether vision-based detection region vibrates.Due to being arranged band in industrial vision detection zone, which, can when being taken
Moire fringes are generated on the image, after taking moire fringes, analyzes and judges whether the moire fringes change, and then determine work
Whether industry vision-based detection region vibrates, and in this way, can simply and effectively carry out vibration detection, and be only arranged
One band, takes pictures to it, and testing cost is not high.
Wherein, in conjunction with referring to Fig. 6, after step S102, can also include:
Step S103: according to the changed variable quantity of the moire fringes, and then determine that industrial vision detection zone is shaken
Dynamic variable quantity.
Wherein, step S102 specifically can also include: by the variable quantity of the variable quantities of moire fringes and vibration that prestore it
Between relationship, and then according to the changed variable quantity of the moire fringes, and determine the change that industrial vision detection zone is vibrated
Change amount
Wherein, in conjunction with referring to Fig. 7, this method further include:
Step S104: according to the variable quantity of vibration, the detection parameters of industrial vision system are adjusted.
Wherein, this method further include: when determining that industrial vision detection zone is vibrated, issue alarm signal.
Wherein, which is arranged in around industrial vision detection zone.
Wherein, which is arranged in the left and right sides of industrial vision detection zone, and filming apparatus setting is in face industry
The position of vision-based detection regional center.
Wherein, which is camera.
Mode the above is only the implementation of the present invention is not intended to limit the scope of the invention, all to utilize this
Equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content, it is relevant to be applied directly or indirectly in other
Technical field similarly includes in scope of patent protection of the invention.
Claims (16)
1. a kind of method of industrial vision detection vibration, wherein the described method includes:
It is shot by filming apparatus and acquires the band using the high frequency distribution that industrial vision detection zone is arranged in image
The moire fringes of upper generation；
It analyzes and judges whether the moire fringes change, and then determine whether the industrial vision detection zone shakes
It is dynamic.
2. according to the method described in claim 1, wherein, the analysis simultaneously judges whether the moire fringes change, in turn
After determining whether the industrial vision detection zone is vibrated, further includes:
According to the changed variable quantity of the moire fringes, and then determine the variation that the industrial vision detection zone is vibrated
Amount.
3. it is described according to the changed variable quantity of the moire fringes according to the method described in claim 2, wherein, and then really
The variable quantity that the fixed industrial vision detection zone is vibrated, comprising:
By the relationship between the variable quantity of moire fringes and the variable quantity of vibration that prestore, and then become according to the moire fringes
The variable quantity of change, and determine the variable quantity that the industrial vision detection zone is vibrated.
4. according to the method described in claim 2, wherein, the method also includes:
According to the variable quantity of the vibration, the detection parameters of industrial vision system are adjusted.
5. according to the method described in claim 1, wherein, the method also includes:
When determining that the industrial vision detection zone is vibrated, alarm signal is issued.
6. according to the method described in claim 1, wherein, the band is arranged in around the industrial vision detection zone.
7. according to the method described in claim 6, wherein, the left and right two of the industrial vision detection zone is arranged in the band
The position at industrial vision detection zone center described in face is arranged in side, the filming apparatus.
8. according to the method described in claim 1, wherein, the filming apparatus is camera.
9. a kind of system of industrial vision detection vibration, wherein the system comprises the band of high frequency distribution, filming apparatus and divide
Analysis apparatus, wherein
The band is arranged in industrial vision detection zone, and can vibrate with the vibration of the industrial vision detection zone, when
When the band is shot by the filming apparatus, moire fringes can be generated on the image that shooting, collecting obtains；
The position that can shoot the band is arranged in the filming apparatus, for band described in captured in real-time, utilizes institute to acquire
The moire fringes stating band and generating on the image；
The analytical equipment is connect with the filming apparatus, for analyzing and judging whether the moire fringes change, in turn
Determine whether the industrial vision detection zone is vibrated.
10. system according to claim 9, wherein the band is arranged in around the industrial vision detection zone.
11. system according to claim 10, wherein the left and right of the industrial vision detection zone is arranged in the band
The position at industrial vision detection zone center described in face is arranged in two sides, the filming apparatus.
12. system according to claim 9, wherein the analytical equipment is also used to be changed according to the moire fringes
Variable quantity, and then determine the variable quantity that the industrial vision detection zone is vibrated.
13. system according to claim 12, wherein the analytical equipment is used for the variable quantity of the moire fringes by prestoring
Relationship between the variable quantity of vibration, and then according to the changed variable quantity of the moire fringes, and determine the industry view
Feel the variable quantity that detection zone is vibrated.
14. system according to claim 12, wherein the system also includes:
Device is adjusted, is connect respectively with industrial vision system and the analytical equipment, for what is determined according to the analytical equipment
The variable quantity of vibration adjusts the detection parameters of the industrial vision system.
15. system according to claim 9, wherein the system also includes:
Warning device is connect with the analytical equipment, for determining the industrial vision detection zone hair when the analytical equipment
When raw vibration, alarm signal is issued.
16. system according to claim 1, wherein the filming apparatus is camera.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/119522 WO2019127252A1 (en) | 2017-12-28 | 2017-12-28 | Industrial visual vibration detection method and system |
Publications (1)
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| CN109313070A true CN109313070A (en) | 2019-02-05 |
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ID=65225732
Family Applications (1)
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| CN201780035743.4A Pending CN109313070A (en) | 2017-12-28 | 2017-12-28 | The method and system of industrial vision detection vibration |
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| WO (1) | WO2019127252A1 (en) |
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| CN110763695A (en) * | 2019-11-08 | 2020-02-07 | 上海盛迭信息科技有限公司 | Automatic cloth inspecting system and method capable of automatically removing Moire patterns |
| CN112150413A (en) * | 2020-09-01 | 2020-12-29 | 珠海格力电器股份有限公司 | Pipeline vibration detection method, device, equipment and storage medium |
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| WO2019127252A1 (en) | 2019-07-04 |
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Address after: 518063 23 Floor (Room 2303-2306) of Desai Science and Technology Building, Yuehai Street High-tech Zone, Nanshan District, Shenzhen City, Guangdong Province Applicant after: Shenzhen AANDE Intelligent Technology Research Institute Co., Ltd. Address before: 518104 Shajing Industrial Co., Ltd. No. 3 Industrial Zone, Hexiang Road, Shajing Street, Baoan District, Shenzhen City, Guangdong Province Applicant before: Shenzhen AANDE Intelligent Technology Research Institute Co., Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190205 |