CN109406545A - A kind of circuit board measuring point automatic station-keeping system based on machine vision - Google Patents
A kind of circuit board measuring point automatic station-keeping system based on machine vision Download PDFInfo
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- CN109406545A CN109406545A CN201811234044.5A CN201811234044A CN109406545A CN 109406545 A CN109406545 A CN 109406545A CN 201811234044 A CN201811234044 A CN 201811234044A CN 109406545 A CN109406545 A CN 109406545A
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- 238000004891 communication Methods 0.000 claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 238000012360 testing method Methods 0.000 abstract description 12
- 238000012545 processing Methods 0.000 abstract description 5
- 239000000523 sample Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 9
- 230000006870 function Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 238000003745 diagnosis Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
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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
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/956—Inspecting patterns on the surface of objects
- G01N21/95607—Inspecting patterns on the surface of objects using a comparative method
-
- 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
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
- G01N2021/8887—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques
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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
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/956—Inspecting patterns on the surface of objects
- G01N21/95607—Inspecting patterns on the surface of objects using a comparative method
- G01N2021/95615—Inspecting patterns on the surface of objects using a comparative method with stored comparision signal
-
- 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
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/956—Inspecting patterns on the surface of objects
- G01N2021/95638—Inspecting patterns on the surface of objects for PCB's
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- General Physics & Mathematics (AREA)
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- Computer Vision & Pattern Recognition (AREA)
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- Length Measuring Devices By Optical Means (AREA)
Abstract
A kind of circuit board measuring point automatic station-keeping system based on machine vision is disclosed in the present invention, including software layer, Communication Layer and hardware layer, the hardware layer includes image input structure, computer control structure and ancillary equipment, image input structure includes industrial camera and light source, the computer controlled machine structure includes industrial computer, the Communication Layer includes USB cable and light source controller, the industrial camera is arranged in confined space, the industrial camera face setting is being detected above target, the light source setting is being detected at the upper side of target, the industrial computer is separately connected industrial camera and control mechanism by USB vain hope.The present invention acquires image document by industrial camera, and processing image and control image detecting system are analyzed using computer, can be realized the automation requirement of this test position fix of circuit, while the system is also convenient for user and realizes quickly and accurately guidance probe positioning.
Description
Technical field
The present invention relates to circuit this measuring point positioning field, in particular to a kind of circuit board measuring point based on machine vision is automatic
Positioning system.
Background technique
With the rapid development of electronic technology, the function of electronics itself is more and more complete, composition becomes increasingly complex.Such as
The present is widely used the system being made of electronic equipment in units such as many fields especially space flight, military project.However due to zero
The aging of component, using factors such as the extension of time and severe working environments, electronic equipment in use, often
There are various failures and cisco unity malfunction.In the maintenance of electronic equipment, often have 60%~90% when
Between all expend in fault diagnosis position fixing process.With the raising of equipment complication degree, fault diagnosis is even more to become equipment dimension
The key repaired.In recent years, the international and domestic Fault Isolation research work to electronic system was all extremely paid attention to.Computer hardware and soft
The fast development of part technology makes measuring technology and method more and more diversified, surveys for example, by using general digital on-line testing method
When trying integrated circuit board, it is difficult to develop the test program for meeting chip pin fault coverage, non-vector survey then occurs
Examination technology, boundary scan technique solve the above problems.When carrying out fault diagnosis to circuit board, test program drives vxi bus
Device applies pumping signal to MUT module under test and then reads and analyze response results to determine the abort situation of circuit board.In reality
In test process, due to the influence of various limiting factors, it can not test and once determine that fault point, but be given by test program
Then possible fault point out guides probe to test all possible fault point so that it is determined that final abort situation.Due to electricity
The complexity on road and user are not enough familiar with circuit, often relatively slow using the process of probe test, and easily make a fault, and influence
Test process.Exactly because in this way, also usually there is the problems such as measuring accuracy is low in traditional manual measuring point and semi-automatic measuring point,
It is not able to satisfy the demand of rapid accuracy test, it is automatic to develop a kind of circuit board measuring point based on machine vision hereby
Positioning system.
Summary of the invention
It is an object of the invention to solve the problem in above-mentioned technology, a kind of circuit board based on machine vision is provided
Measuring point automatic station-keeping system, the system acquire image document by industrial camera, and processing image and control are analyzed using computer
Imaged detection system can be realized the automation requirement of this test position fix of circuit, while the system is also convenient for user and realizes fastly
Speed, the accurately positioning of guidance probe.
In order to solve the above technical problems, The technical solution adopted by the invention is as follows:
A kind of circuit board measuring point automatic station-keeping system based on machine vision, including software layer, Communication Layer and hardware layer, institute
The hardware layer stated includes image input structure, computer control structure and ancillary equipment, and image input structure includes industrial camera
And light source, the computer controlled machine structure includes industrial computer, and the Communication Layer includes USB cable and light source control
Device, the industrial camera are arranged in confined space, and the industrial camera face setting is being detected above target, described
Light source setting is being detected at the upper side of target, and the industrial computer is separately connected industrial camera and control by USB vain hope
Mechanism processed.
Further, the light source connects light source controller as a preferred technical solution,.
Further, the light source is monochromatic LED light source as a preferred technical solution, and the LED light source is in ring
Shape.
Further, the ancillary equipment includes camera support, slide unit and outer outlet body as a preferred technical solution,
The slide unit is arranged on outer outlet body top, and the outer outlet body is provide with industrial camera and light source, and the camera support is arranged in slide unit
On, the industrial camera is arranged on camera support.
Possessed by of the invention the utility model has the advantages that
The present invention acquires image document by industrial camera, and processing image and control image detection are analyzed using computer
System can be realized the automation requirement of this test position fix of circuit, while the system is also convenient for user's realization and quickly and accurately draws
Lead probe positioning.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is present system mechanism map.
In figure: 1, light source controller；2, outer outlet body；3, industrial camera；4, slide unit；5, camera support；6. industrial computer；
7, control mechanism；8, it is detected target.
Specific embodiment
The present invention is further illustrated in the following with reference to the drawings and specific embodiments.
Embodiment 1
As shown in Figure 1, a kind of circuit board measuring point automatic station-keeping system based on machine vision, including software layer, Communication Layer
And hardware layer, the hardware layer include image input structure, computer control structure and ancillary equipment, image input structure packet
Include industrial camera and light source, the computer controlled machine structure includes industrial computer, the Communication Layer include USB cable and
Light source controller, the industrial camera are arranged in confined space, and the industrial camera face is arranged in detected target
Top, the light source setting are being detected at the upper side of target, and the industrial computer is separately connected industry by USB vain hope
Camera and control mechanism, the light source connect light source controller, and the light source is monochromatic LED light source, the LED light source
In a ring, the ancillary equipment includes camera support, slide unit and outer outlet body, and the slide unit setting is described on outer outlet body top
Outer outlet body is provide with industrial camera and light source, and the camera support is arranged on slide unit, and the industrial camera is arranged in camera support
On.
Image input structure is mainly made of industrial camera, camera lens and cable in said mechanism.Wherein camera and camera lens master
It is used for target image acquisition, optical signal is become into electric signal；Cable be then for realizing the communication between camera and computer,
The image that will acquire phase function passes to computer, and simultaneous computer is also able to achieve the control to camera.Computer system: this
Computer system major embodiment in NI Vision Builder for Automated Inspection goes out two parts function.First is that control function, by controlling industrial camera
The acquisition to target image is completed with camera lens；Second is that image processing function, carries out one to target image by image processing software
Series of processes mainly includes image preprocessing, image calculating, object recognition and detection etc..Department of computer science in vision positioning system
System should have biggish memory capacity, since it is desired that the image information of processing is huger, while be also required to faster software
Processing capacity and computing capability.Ancillary equipment mainly includes the equipment such as camera support, slide unit, light source controller, plays auxiliary and takes
Build the effect of vision positioning system hardware platform.
As shown in Fig. 2, at work, being selected first in actual physics coordinate system and suitably referring to placement position, utilize
Camera driving acquisition scaling board and circuit board image, then carry out image procossing using image processing software, obtain circuit at this time
Measured point coordinate, is finally saved in database table, at this time data by Mark point position coordinates and measured point position coordinates on plate
Measured point title should fill in the measured point name information with ATS Software Platform agreement in the list item of library.In practical survey
When examination, first the reference position alignment by circuit board in physical coordinates system according to agreement is put, real-time using image processing software
Collecting circuit board image, then obtains the coordinate information of Mark point on circuit board at this time through image procossing, and by Mark point coordinate
Information assignment is into program.Position correction is carried out to circuit board, position is put relative to reference in the practical placement position of computing board
Coordinate conversion matrix is saved in specified text by the position compensation set.Finally write plate when computing board is put in real time
The function interface of upper measured point coordinate, the function interface can be called for software platform for auto test, then automatic testing software
Measured point coordinate can be sent to motion control mechanism by platform.
The description and the appended drawings of the invention be considered as it is illustrative and not restrictive, on the basis of the present invention, ability
According to disclosed technology contents, some of technical characteristics can be made field technique personnel by not needing creative labor
Some replacements and deformation, are within the scope of the invention.
Claims (4)
1. a kind of circuit board measuring point automatic station-keeping system based on machine vision, including software layer, Communication Layer and hardware layer, special
Sign is that the hardware layer includes that image input structure, computer control structure and ancillary equipment, image input structure include
Industrial camera and light source, the computer controlled machine structure includes industrial computer, and the Communication Layer includes USB cable and light
Source controller, the industrial camera are arranged in confined space, and the industrial camera face setting is on being detected target
Side, the light source setting are being detected at the upper side of target, and the industrial computer is separately connected industrial phase by USB vain hope
Machine and control mechanism.
2. a kind of circuit board measuring point automatic station-keeping system based on machine vision according to claim 1, which is characterized in that
The light source connects light source controller.
3. a kind of circuit board measuring point automatic station-keeping system based on machine vision according to claim 1, which is characterized in that
The light source is monochromatic LED light source, and the LED light source is in a ring.
4. a kind of circuit board measuring point automatic station-keeping system based on machine vision according to claim 1, which is characterized in that
The ancillary equipment includes camera support, slide unit and outer outlet body, and the slide unit is arranged in outer outlet body top, the outer outlet body cover
If industrial camera and light source, the camera support is arranged on slide unit, and the industrial camera is arranged on camera support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811234044.5A CN109406545A (en) | 2018-10-23 | 2018-10-23 | A kind of circuit board measuring point automatic station-keeping system based on machine vision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811234044.5A CN109406545A (en) | 2018-10-23 | 2018-10-23 | A kind of circuit board measuring point automatic station-keeping system based on machine vision |
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| Publication Number | Publication Date |
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| CN109406545A true CN109406545A (en) | 2019-03-01 |
Family
ID=65468840
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811234044.5A Withdrawn CN109406545A (en) | 2018-10-23 | 2018-10-23 | A kind of circuit board measuring point automatic station-keeping system based on machine vision |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110866894A (en) * | 2019-10-08 | 2020-03-06 | 南京航空航天大学 | A cross-granularity sheet metal recognition system and method based on machine vision technology |
| CN111398705A (en) * | 2020-03-13 | 2020-07-10 | 天津中晟达科技有限公司 | Automatic electric measuring device with computer |
| CN114624235A (en) * | 2022-02-16 | 2022-06-14 | 伟创力电脑（苏州）有限公司 | A circuit board LED lamp group automatic detection system |
-
2018
- 2018-10-23 CN CN201811234044.5A patent/CN109406545A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110866894A (en) * | 2019-10-08 | 2020-03-06 | 南京航空航天大学 | A cross-granularity sheet metal recognition system and method based on machine vision technology |
| CN110866894B (en) * | 2019-10-08 | 2023-05-26 | 南京航空航天大学 | Cross-granularity sheet metal part identification system and method based on machine vision technology |
| CN111398705A (en) * | 2020-03-13 | 2020-07-10 | 天津中晟达科技有限公司 | Automatic electric measuring device with computer |
| CN114624235A (en) * | 2022-02-16 | 2022-06-14 | 伟创力电脑（苏州）有限公司 | A circuit board LED lamp group automatic detection system |
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Application publication date: 20190301 |