CN207923416U - A kind of Mobile phone touch control screen Mark positioning non-contact vision detection device - Google Patents
A kind of Mobile phone touch control screen Mark positioning non-contact vision detection device Download PDFInfo
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- CN207923416U CN207923416U CN201820078966.0U CN201820078966U CN207923416U CN 207923416 U CN207923416 U CN 207923416U CN 201820078966 U CN201820078966 U CN 201820078966U CN 207923416 U CN207923416 U CN 207923416U
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Abstract
The utility model provides a kind of Mobile phone touch control screen Mark positioning non-contact vision detection device, is divided into image capture module, motion-control module, ancillary equipment module, pneumatic operated valve control module and upper computer module.Image capture module is made of camera, telecentric lens, purple coaxial light source and data collecting card；Motion-control module is made of relay switch, PLC and position sensor；Pneumatic operated valve control module is made of pneumatic operated valve, pneumatic valve controller, tracheae, air gauge and air pump；Ancillary equipment module is made of pallet, holder and baffle；Upper computer module is made of industrial personal computer and display.The image interface of camera is connect using Gige agreements with image pick-up card.Industrial personal computer and PLC are using I/O communication connections.The utility model can rapidly and accurately realize Mobile phone touch control screen Mark positioning non-contact vision detection, than traditional manual measurement mode accurately and fast, stablize.
Description
Technical field
The utility model belongs to electronic product technical field of vision detection, is related to that a kind of Mobile phone touch control screen Mark positioning is non-to be connect
Touch vision inspection apparatus.
Background technology
With the fast development of mobile Internet, the software and hardware technology of smart mobile phone has promotion at full speed, while intelligence
Energy mobile phone price also develops towards more and more popular direction so that and smart mobile phone is more and more diversified in the development of China,
Application range also more and more comprehensively, extremely important effect is play in the intelligent life of people.
An important component of the Mobile phone touch control screen as smart mobile phone, the life of the production qualification rate of touch screen to mobile phone
Yield and quality is popularized with mobile phone and plays a very important ring, and the Mark central points of touch screen differ larger with the centers of circle Circle,
Product front can be caused bigger exposure problems occur.Traditional touch screen Mark detections are manually to be surveyed using detection device
The mode of amount exists due to manually placing phenomenon that is unstable and causing detection station amplitude of variation too big, and then causes to detect
Inaccurately, occur the problem of inefficiencies, and the degree of automation and stability are not high enough.
Fig. 2 of the utility model is the touch screen schematic diagram that need to be detected, and shares 4 flag bits, be respectively Leftmark,
Rightmark, Leftcircle and Rightcircle.It needs to carry out separate-blas estimation to this four flag bits, detects the areas A
Mark central points and the offset distance in the centers of circle Circle, the offset distance of the areas B Mark central points and the centers of circle Circle, are judged with this
Touch screen is qualified or not.
Utility model content
In view of the above-mentioned problems, to provide a kind of touch screen Mark positioning based on machine vision contactless for the utility model
Vision inspection apparatus.
Technical solution used by the utility model is：
A kind of Mobile phone touch control screen Mark positioning non-contact vision detection device, including image capture module, motion control
Module, ancillary equipment module, pneumatic operated valve control module and upper computer module；There are two the image capture modules, by black
White industrial camera, telecentric lens, purple coaxial light source and data collecting card are constituted, and telecentric lens are mounted on black and white industrial camera
On, purple coaxial light source is mounted on inside telecentric lens；Each telecentric lens are apart from Mobile phone touch control screen Mark flag bits 1090-
1100mm；Two black and white industrial cameras are by the connection of Gige ethernet communications in the PCI slot of industrial control computer
Data collecting card；Motion-control module is made of relay switch, PLC and position sensor, and industrial control computer is logical with PLC
Cross I/O communication connections；Ancillary equipment module includes pallet, holder and baffle；Pneumatic operated valve control module by pneumatic valve controller,
Pneumatic operated valve, tracheae, air gauge, air pump and pallet composition, pneumatic operated valve driving pallet move on upper and lower two stations, and upper and lower two
A station obtains the image of Mark and Circle respectively, so as to subsequent processing；Upper computer module mainly shows the touch screen of detection
4 deviation datas, equipment offset, two width Mark images and two width Circle images.
Two black and white industrial cameras are in same level height relative to detection plane, and operating distance is in 1090-1110mm
Range.
The horizontal distance of two black and white industrial cameras is 75mm.
There are two detection zones (areas A and the areas B) to need to carry out Mark non-contact vision detections, detection altogether for the Mobile phone touch control screen
The distribution of position is as shown in Fig. 2, since the deviation of detection Mark central points and Circle centre points needs to acquire the opposite of them
Coordinate, therefore consider to establish a unified coordinate system, since this detection device just needs to detect two pairs of Mark central points
With the deviation of Circle centre points, it is therefore desirable to which two black and white industrial cameras are carried out at the same time shooting capture.According to requiring, need
A plane coordinate system is established, the X-axis of coordinate system, mistake are established with the central point of obtained two positions Mark of first time capture
Left side Mark central points establish the Y-axis perpendicular to X-axis, and having established coordinate system later can be in the hope of both sides Circle centre point
Coordinate needs the coordinate system by two black and white industrial cameras to normalize to the same coordinate system during touch screen detects
In, while needing to demarcate the black and white industrial camera of both sides, the pixel coordinate that capture obtains is converted to actual coordinate, and
And influence of the lens distortion to imaging effect can be optimized.Distribution in view of Mark Mark Detections positions and telecentric lens
The installation of size and external baffle needs the spatial margin there are 10mm.
The beneficial effects of the utility model：The utility model is simple in structure, is not necessarily to too many hardware, realizes Mobile phone touch control screen
Mark central points and Circle centre point deviations quick, accurate, automatic detection.
Description of the drawings
Fig. 1 is Mobile phone touch control screen Mark positioning non-contact vision detection device simplified structure diagrams.
Fig. 2 is touch screen schematic diagram, including the areas A to be detected, the areas B to be detected.
In figure：1 first black and white industrial camera；2 second black and white industrial cameras；3 purple coaxial light source A；4 purple axis lights
Source B；5 telecentric lens A；6 telecentric lens B；7 touch screens；8 pallet for placing touch screen；9 industrial control computers；10 is aobvious
Display screen； 11PLC；12 pneumatic valve controllers.
Specific implementation mode
The specific implementation mode of utility model device is described further below in conjunction with the accompanying drawings.
Embodiment 1 obtains the process of image
A kind of Mobile phone touch control screen Mark positioning non-contact vision detection device, including image capture module, motion control
Module, ancillary equipment module, pneumatic operated valve control module and upper computer module；There are two the image capture modules, by black
White industrial camera, telecentric lens, purple coaxial light source and data collecting card are constituted, and telecentric lens are mounted on black and white industrial camera
On, purple coaxial light source is mounted on inside telecentric lens；Each telecentric lens are apart from Mobile phone touch control screen Mark flag bits 1090-
1100mm；Two black and white industrial cameras are by the connection of Gige ethernet communications in the PCI slot of industrial control computer
Data collecting card；Motion-control module is made of relay switch, PLC and position sensor, and industrial control computer is logical with PLC
Cross I/O communication connections；Ancillary equipment module includes pallet, holder and baffle；Pneumatic operated valve control module by pneumatic valve controller,
Pneumatic operated valve, tracheae, air gauge, air pump and pallet composition, pneumatic operated valve driving pallet move on upper and lower two stations, and upper and lower two
A station obtains the image of Mark and Circle respectively, so as to subsequent processing；Upper computer module mainly shows the touch screen of detection
4 deviation datas, equipment offset, two width Mark images and two width Circle images.
When starting detection, Mobile phone touch control screen is placed on pallet first, it is black to adjust the first black and white industrial camera 1, second
The position of white industrial camera 2 simultaneously connects IP address so that and clapped picture is located at the centre that 10 image window of display screen is shown, and
And the image and corresponding image window consistency, PLC11 for needing guarantee black and white industrial camera to be clapped pass through pneumatic valve controller
12 deliver products to Mark test positions.Behind in-position, PLC11 by I/O communication send in place signal to display screen
10, display screen 10 triggers the first black and white industrial camera 1 and the second black and white industrial camera 2 is taken pictures, after obtaining image, according to image
Readability, suitably adjusts the focal length of two black and white industrial cameras, obtains clearly image until can clap, otherwise can influence the later stage
The searching in the center of circle.The first black and white industrial camera 1 and the second black and white work are first loaded into using vision software respectively headed by specific step
Then the address of industry camera 2, model adjust four orientation up and down of black and white industrial camera, to ensure captured figure
The centre that image position is shown in host computer adjusts the focal length of black and white industrial camera after reaching requirement, makes to be clapped as far as possible
Mark images are clear enough.
Embodiment 2 obtains post processing of image
(1) calibration and calibration black and white industrial camera image, select the gridiron pattern scaling board of grid 0.5mm*0.5mm, use
Gamma correction pattern, corrected perspective distortion, radial distortion and planar linear distortion；Comprise the concrete steps that oppositely positioned scaling board,
Vision software is opened, the realtime graphic module for opening two black and white industrial cameras respectively to this equipment does capture calibration, complete
At the rear demarcating file for generating the first black and white industrial camera 1 and the second black and white industrial camera 2, demarcating file is loaded into respectively pair
In the upper computer module answered；
(2) it acquires image and searches for position after template, it is special using the image of mapping function off-line training product coarse positioning
It levies, and finds the coordinate of the characteristics of image by Feature Correspondence Algorithm, according to the seat of the characteristics of image and fitting circle region of search
Mark correspondence calculates the location information of fitting circle region of search；
(3) image procossing uses least square fitting touch screen both ends Mark in corresponding fitting a straight line region of search
4 boundaries, following public affairs can be passed through in the hope of coordinate (X1, Y1), (X2, the Y2) of two intersection points, the coordinate of the central point of Mark
Formula calculates：
Acquire the corresponding coordinate of Mark central points；Simultaneously least square fitting is used in corresponding fitting circle region of search
The Circle images at touch screen both ends acquire the center of circle d of the center of circle c and Circle of Circle, cross central point a, b and do straight line, make
For the X-axis of coordinate, it is Y-axis to be central point a about the vertical line of X-axis, and the areas A Mark marks and the areas B Mark marks are unified in one
In a coordinate system, the coordinate of four points is acquired, subsequently to acquire the relative deviation position of Mark points and Circle；
Since non-contact detection equipment has the artificial deviation of a part, so needing to acquire this in the first round tests
Offset is input among host computer to ensure the accuracy of follow-up measurement data by the offset of platform equipment.Host computer can be with
The data deviation result of real-time display detection and capture as a result, the data of detection are generated accounting logging in host computer simultaneously
Detection completion signal is provided to deliver product to PLC, PLC to another station by pneumatic valve controller, that is, detect Circle's
The flag bit center of circle, pneumatic valve controller driving pallet returns to original position after capture is completed, and prepares the detection of next workpiece.
Claims (3)
1. a kind of Mobile phone touch control screen Mark positions non-contact vision detection device, which is characterized in that the Mobile phone touch control screen
It includes image capture module, motion-control module, ancillary equipment module, pneumatic operated valve that Mark, which positions non-contact vision detection device,
Control module and upper computer module；There are two the image capture modules, by black and white industrial camera, telecentric lens, purple
Coaxial light source and data collecting card are constituted, and telecentric lens are mounted on black and white industrial camera, and purple coaxial light source is mounted on remote
Inside heart camera lens；Each telecentric lens are apart from Mobile phone touch control screen Mark flag bits 1090-1100mm；Two black and white industrial cameras are logical
Cross Gige ethernet communications connection data collecting card in the PCI slot of industrial control computer；Motion-control module by
Relay switch, PLC and position sensor are constituted, and industrial control computer is communicated by I/O with PLC and connected；Ancillary equipment mould
Block includes pallet, holder and baffle；Pneumatic operated valve control module by pneumatic valve controller, pneumatic operated valve, tracheae, air gauge, air pump and
Pallet form, pneumatic operated valve driving pallet moved on upper and lower two stations, upper and lower two stations obtain respectively Mark and
The image of Circle, so as to subsequent processing；Upper computer module mainly shows 4 deviation datas of the touch screen of detection, equipment
Offset, two width Mark images and two width Circle images.
2. a kind of Mobile phone touch control screen Mark according to claim 1 positions non-contact vision detection device, it is characterized in that,
Two black and white industrial cameras are in same level height relative to detection plane, and operating distance is in 1090-1110mm ranges.
3. a kind of Mobile phone touch control screen Mark according to claim 1 or 2 positions non-contact vision detection device, feature exists
In the horizontal distance of two black and white industrial cameras is 75mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820078966.0U CN207923416U (en) | 2018-01-13 | 2018-01-13 | A kind of Mobile phone touch control screen Mark positioning non-contact vision detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820078966.0U CN207923416U (en) | 2018-01-13 | 2018-01-13 | A kind of Mobile phone touch control screen Mark positioning non-contact vision detection device |
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| CN207923416U true CN207923416U (en) | 2018-09-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112172338A (en) * | 2020-09-24 | 2021-01-05 | 山西潞安太阳能科技有限责任公司 | Automatic positioning system for silk-screen printing Mark points |
| TWI719571B (en) * | 2019-08-05 | 2021-02-21 | 伊斯酷軟體科技股份有限公司 | Testing apparatus, testing system, and computer program product thereof for testing touch mobile devices |
-
2018
- 2018-01-13 CN CN201820078966.0U patent/CN207923416U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI719571B (en) * | 2019-08-05 | 2021-02-21 | 伊斯酷軟體科技股份有限公司 | Testing apparatus, testing system, and computer program product thereof for testing touch mobile devices |
| CN112172338A (en) * | 2020-09-24 | 2021-01-05 | 山西潞安太阳能科技有限责任公司 | Automatic positioning system for silk-screen printing Mark points |
| CN112172338B (en) * | 2020-09-24 | 2022-03-15 | 山西潞安太阳能科技有限责任公司 | Automatic positioning system for silk-screen printing Mark points |
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