CN206944930U - A kind of pcb board hole location detecting device - Google Patents
A kind of pcb board hole location detecting device Download PDFInfo
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- CN206944930U CN206944930U CN201720814970.4U CN201720814970U CN206944930U CN 206944930 U CN206944930 U CN 206944930U CN 201720814970 U CN201720814970 U CN 201720814970U CN 206944930 U CN206944930 U CN 206944930U
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- pcb board
- camera
- measured
- location detecting
- hole location
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Abstract
The utility model discloses a kind of pcb board hole location detecting device, workbench, light source, collecting device, camera and computer, pcb board to be measured is placed on the table, and camera is arranged on directly over pcb board to be measured, and light source is placed between camera and pcb board to be measured, the light that light source is launched is perpendicular to pcb board surface to be measured, collecting device is arranged on around camera, and camera is connected with computer, and collecting device is connected with computer.Technical field of machine vision is the utility model is related to, the pcb board hole location detecting device, by the front polishing of pcb board surface, forming image, avoiding the undetectable situation in hole do not punched completely；Surface planarity combining target pcb board hole position by gathering pcb board adjusts the position of camera, and pcb board surface image is gathered using camera, and pcb board surface image is analyzed and processed by computer to obtain actual hole position position, improves hole location detecting precision.
Description
Technical field
It the utility model is related to technical field of machine vision, more particularly to a kind of pcb board hole location detecting device.
Background technology
Automatic optics inspection is the novel test technology based on machine vision, the machine for pcb board hole position separate-blas estimation
Vision measurement technology can provide data analysis for rig, help rig provider or client to monitor the system of rig
Cheng Nengli, improve technological level and reduce product rejection rate.At present, to PCB aperture position accuracy detection mostly using back light from
Pcb board reverse side is irradiated, and coordinates the light that line-scan digital camera passes through from PCB aperture to identify hole position, porose place is due to saturating
Light and be imaged as white, non-porous place is imaged into black because light is blocked.Back light coordinates line-scan digital camera identification
Though the scheme recognition speed of hole position is fast, accuracy of detection is not high, some following deficiency be present：
(1) hole do not punched completely can not be detected.
(2) pcb board rat itself it is too high either it is recessed it is too low can cause imaging it is unintelligible or imaging change, and then
Influence measurement accuracy.
Utility model content
In order to solve the above-mentioned technical problem, the purpose of this utility model is to provide a kind of high pcb board hole of measurement accuracy
Level detecting apparatus.
Technical scheme is used by the utility model：A kind of pcb board hole location detecting device, including：Workbench, light source,
For measuring collecting device, the camera of pcb board flatness to be measured, pcb board to be measured is placed on the workbench, and the camera is set
Put directly over pcb board to be measured, the light source is placed between the camera and pcb board to be measured, the light that the light source is launched hangs down
Directly it is arranged in pcb board surface to be measured, the collecting device around the camera, the camera is connected with the computer, institute
Collecting device is stated to be connected with the computer.
As the further improvement of such scheme, the detection means also includes light-passing board, and the light-passing board is placed on institute
State between workbench and pcb board to be measured.
As the further improvement of such scheme, the light-passing board is glass plate.
As the further improvement of such scheme, the camera is area array cameras.
As the further improvement of such scheme, the collecting device is flatness mapping instrument.
The beneficial effects of the utility model are：
A kind of pcb board hole location detecting device, by the front polishing of pcb board surface, forming image, can avoid incomplete
The undetectable situation in hole punched；By gathering the surface planarity of pcb board, combining target pcb board hole position adjustment camera
Position, the higher image of precision is obtained, gather pcb board surface image using camera, pcb board surface image is entered by computer
Row analyzing and processing obtains actual hole position position, improves hole location detecting precision.
Brief description of the drawings
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings：
Fig. 1 is a kind of structural representation of pcb board hole location detecting device of the utility model；
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.
Fig. 1 is a kind of structural representation of pcb board hole location detecting device of the utility model, as shown in figure 1, a kind of pcb board
Hole location detecting device, including workbench 1, light source 2, collecting device 3, camera 4 and computer 5.In the present embodiment, pcb board 9 to be measured
It is placed on workbench 1, camera 4 is arranged on directly over pcb board 9 to be measured, and light source 2, the court of light source 2 are placed between camera 4 and pcb board
Directional light is emitted to the surface of pcb board 9, collecting device 3 is arranged on around camera 4, and collecting device 3 is used for the surface for gathering pcb board 9
Flatness, in the present embodiment, collecting device 3 uses flatness mapping instrument.The user of camera 4 gathers the surface image of pcb board 9.Calculate
Machine 5 is connected with collecting device 3, the surface plane degrees of data of the pcb board 9 collected for receiving collecting device 3, and computer 5 is also
It is connected with camera 4, the surface image of pcb board 9 collected for receiving camera 4, convenient use person is according to the surface plane of pcb board 9
Object distance between degree regulation camera 4 and pcb board to be measured, obtains the image of higher precision, and computer 5 passes through the camera to receiving
4 surface image of pcb board 9 carries out Treatment Analysis and draws pcb board hole surface hole position physical location.
Camera 4 obtains the surface image of pcb board 9, due to using in pcb board 9 to be measured by being shot to the surface of pcb board 9
The form of positive polishing, in the image that camera 4 photographs, there is the position of hole position because hole position is deep, the light that light source 2 is sent passes through
The light of through hole back reflection time camera is less or does not reflect substantially, and without the position of hole position, the light that light source 2 is sent is by PCB
The surface of plate 9 is reflected back on camera 4, and therefore, camera 4 is shot in obtained image, and the position for having hole position is black dull region, without hole
The position of position is bright areas, and the light that the hole do not punched completely is reflected back camera weakens so that in the image that camera obtains not
The position in the hole punched completely is gray area, it can thus be avoided the undetectable situation in the hole do not punched completely.
As the further improvement of above-described embodiment, the detection means also includes servosystem 7, servosystem 7 respectively with
Collecting device 3, camera 4 and computer 5 connect, and computer 5 adjusts position and the camera 4 of collecting device 3 by servosystem 7
Position.
In the present embodiment, camera 4 preferably uses area array cameras, it is clear that or line-scan digital camera.Using area array cameras
The image pixel precision collected is higher, improves the efficiency of PCB plate through hole detection.
As the further improvement of above-described embodiment, the detection means also includes light-passing board 8, and light-passing board 8 is placed on work
Between platform 1 and pcb board 9, increase light-passing board 8 can weaken the reflected light reflected from the hole position A light passed through by workbench,
Increase the contrast of pcb board imaging, eliminate reflective influence.In the present embodiment, light-passing board 8 uses armorplate glass, is more highly preferred to
, in the present embodiment, light-passing board 8 is provided with anti-reflection film close to the one side of pcb board, and the more effective workbench reflected light that weakens is to pcb board
The influence of imaging.
The utility model pcb board hole location detecting device can carry out high-precision measurement, accuracy of detection model to hole position deviation
Enclose for 3um to 10um, and the minimum hole that can detect a diameter of 0.04mm.
In the utility model pcb board hole location detecting device, the image of camera shooting is pcb board surface image, can be passed through
Positive detection and reverse side detection are carried out to pcb board, the quality of drilling can be drawn according to the result that front detection and reverse side detect.
A kind of pcb board hole location detecting device, by the front polishing of pcb board surface, forming image, can avoid incomplete
The undetectable situation in hole punched；By gathering the surface planarity of pcb board, combining target pcb board hole position adjustment camera
Position, pcb board surface image is gathered using camera, pcb board surface image is analyzed and processed to obtain reality by computer
Hole position position, improve hole location detecting precision.
Above is preferably implement to be illustrated to of the present utility model, but the utility model is created and is not limited to institute
Embodiment is stated, those skilled in the art can also make a variety of be equal on the premise of without prejudice to the utility model spirit
Deformation is replaced, and these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (5)
1. a kind of pcb board hole location detecting device, it is characterised in that it includes：Workbench, light source, put down for measuring pcb board to be measured
Collecting device, camera and the computer of face degree, pcb board to be measured are placed on the workbench, and the camera is arranged on PCB to be measured
Directly over plate, the light source is placed between the camera and pcb board to be measured, the light source is used to go out towards pcb board surface to be measured
Directional light is penetrated, the collecting device is arranged on around the camera, and the camera is connected with the computer, the collecting device
It is connected with the computer.
2. a kind of pcb board hole location detecting device according to claim 1, it is characterised in that the detection means also includes
Light-passing board, the light-passing board are placed between the workbench and pcb board to be measured.
3. a kind of pcb board hole location detecting device according to claim 2, it is characterised in that the light-passing board is glass plate.
4. a kind of pcb board hole location detecting device according to claim 1,2 or 3, it is characterised in that the camera is face battle array
Camera.
5. a kind of pcb board hole location detecting device according to claim 4, it is characterised in that the collecting device is plane
Spend mapping instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720814970.4U CN206944930U (en) | 2017-07-06 | 2017-07-06 | A kind of pcb board hole location detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720814970.4U CN206944930U (en) | 2017-07-06 | 2017-07-06 | A kind of pcb board hole location detecting device |
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| Publication Number | Publication Date |
|---|---|
| CN206944930U true CN206944930U (en) | 2018-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720814970.4U Active CN206944930U (en) | 2017-07-06 | 2017-07-06 | A kind of pcb board hole location detecting device |
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| CN (1) | CN206944930U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253702A (en) * | 2018-11-08 | 2019-01-22 | 东莞职业技术学院 | A kind of PCB drilling Quick overhaul method and apparatus |
| CN114202489A (en) * | 2021-10-29 | 2022-03-18 | 湖北大学 | Deep learning-based PCB Mark point reflecting light spot segmentation method |
-
2017
- 2017-07-06 CN CN201720814970.4U patent/CN206944930U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253702A (en) * | 2018-11-08 | 2019-01-22 | 东莞职业技术学院 | A kind of PCB drilling Quick overhaul method and apparatus |
| CN109253702B (en) * | 2018-11-08 | 2023-07-28 | 东莞职业技术学院 | PCB drilling quick overhaul method and equipment |
| CN114202489A (en) * | 2021-10-29 | 2022-03-18 | 湖北大学 | Deep learning-based PCB Mark point reflecting light spot segmentation method |
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