CN103698335A - Non-contact testing method and system - Google Patents
Non-contact testing method and system Download PDFInfo
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- CN103698335A CN103698335A CN201310675426.2A CN201310675426A CN103698335A CN 103698335 A CN103698335 A CN 103698335A CN 201310675426 A CN201310675426 A CN 201310675426A CN 103698335 A CN103698335 A CN 103698335A
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- 238000012360 testing method Methods 0.000 title claims abstract description 111
- 230000007547 defect Effects 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000009434 installation Methods 0.000 claims description 52
- 238000005259 measurement Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000012937 correction Methods 0.000 claims description 3
- 238000010998 test method Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003707 image sharpening Methods 0.000 description 1
- 238000003706 image smoothing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
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Abstract
The invention provides a non-contact testing method and system. The method comprises the steps that a test target is fixed on an automatic part fixing and adjusting mechanism, and then a sensor detects existence of the current test target, and transmits a test beginning signal to a test device; the test device begins to detect after receiving the test beginning signal; the test device transmits image collection information to an image collection system; the image collection system shoots the test target, and transmits an image of the test target to the test device; the test device receives the image of the test target, detects the image of the test target according to a standard image, and determines whether a defect exists in the test target or not. By adopting the test method provided by the invention, the testing stability and accuracy are improved.
Description
Technical field
The invention belongs to computer realm, particularly a kind of method and system of contactless test.
Background technology
At present, carrying out manufacturing process, conventionally need to measure the size of the various piece of produced product, and test produced product.In prior art, be all to measure by touching the measuring system of test target, but the accuracy of the measurement of this contact is not high, efficiency is low.
Summary of the invention
Above-mentioned technical matters based on existing in prior art.The object of the invention is to propose a kind of method and system of contactless test, improved accuracy and the efficiency of product test.
A kind of method that the invention provides contactless test, comprising:
After test target is fixed in the positive mechanism of the automatic fixed gange of part, sensor detects the current test target that exists, and to proving installation, sends and starts test signal;
Proving installation receives and starts after test signal, starts to detect, and proving installation sends image acquisition message to image capturing system;
Described image capturing system is taken a picture to test target, and the image of test target is sent to proving installation;
Described proving installation has received the image of test target, and according to standard picture, the image of test target is detected, and determines whether this test target exists defect.
Further, according to standard picture, the image of test target is detected, determines whether this test target exists defect specifically to comprise:
Proving installation carries out pre-service to the image receiving; Proving installation carries out binary conversion treatment to pretreated image; Proving installation, according to the coordinate of the standard point of standard picture, is proofreaied and correct coordinate system; Coordinate system after proving installation combined standard image and correction, carry out algorithm selection, and according to the algorithm of selecting, test target is tested, and measurement result and the standard picture of the image by contrastive test target, obtain the image of test target and the difference of standard picture; Proving installation, according to described difference, determines whether described difference is a kind of defect, if a kind of defect is identified defect corresponding to this difference, the defect recognizing is sent to database, preserves.
Further, also comprise: proving installation is also according to the defect of identification, to existing the position of defect to mark.
The present invention also provides a kind of system of contactless test, comprising: sensor, image capturing system and proving installation; Wherein whether sensor, have test target to need to detect for detection of test position place, if any, will send and start test signal to proving installation; Described proving installation, be used for receiving and start after test signal, start the image of image capturing system collecting test target, and receive the image that image capturing system sends to the test target collecting, and according to standard picture, image to test target detects, and determines whether this test target exists product defects.
Further, image capturing system comprises CCD camera and LED light source, and when image capturing system has received when test target is taken a picture, proving installation will be opened LED light source, and this LED light source provides light source for CCD camera.
The invention has the beneficial effects as follows: method of testing of the present invention has improved stability and the accuracy of test, and has improved testing efficiency.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the method for a kind of contactless test of the present invention;
Fig. 2 is the structural representation of the system of a kind of contactless test of the present invention.
In figure, 1, sensor, 2, proving installation, 3, image capturing system, 4, target to be measured.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described, is to be noted that described embodiment is only intended to be convenient to the understanding of the present invention, and it is not played to any restriction effect.
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
As shown in Figure 1, the invention provides a kind of method of contactless test, comprising:
Step 101, after part completion of processing, after part is fixed in the positive mechanism of the automatic fixed gange of part, sensor detects has currently had test target, therefore to proving installation, sends and starts test signal.Concrete, this starts the trigger pip that test signal can be a low and high level.
Step 102, proving installation receive and start after test signal, start to detect, and proving installation is realized the control of image capturing system and image acquisition by USB interface.Concrete, proving installation sends image acquisition message to image acquistion system, and image capturing system is taken a picture to test target (fixing part), obtains the image of this test target, and the image of this test target is sent to proving installation.
Step 103, proving installation have received the image of this test target, and according to standard picture, the image of test target are detected, and determine whether this test target exists defect.
The concrete process that proving installation detects the image of test target, comprises as follows:
Proving installation carries out pre-service to the image receiving, and the pre-service here can be image smoothing, sharpening and noise reduction etc.
Proving installation carries out binary conversion treatment to pretreated image.
Proving installation carries out vision location.
Proving installation, according to the coordinate of the standard point of standard picture, is proofreaied and correct coordinate system.
Coordinate system after proving installation combined standard image and correction, carries out algorithm selection, and according to the algorithm of selecting, test target is tested.For example: selected the algorithm of rim detection here, tested test target.First proving installation carries out edge to the image after binaryzation cuts apart, and according to the coordinate system after proofreading and correct, according to the algorithm of rim detection, thereby obtain each marginal point, proving installation carries out operation result of measurement, obtain the measurement result of image, and passed through measurement result and the standard picture of the image of contrastive test target, obtained the image of test target and the difference of standard picture.
Proving installation, according to this difference, determines whether this difference is a kind of defect, if a kind of defect, identify what defect corresponding to this difference be, test result is sent to database, preserve, and according to the defect of identification, to existing the position of defect to mark.
As shown in Figure 2, the present invention also provides a kind of system of contactless test, comprising: sensor, image capturing system and proving installation.Image capturing system has comprised (Charge-coupled Device, charge coupled cell) CCD camera and LED light source, when image capturing system has received when test target is taken a picture, proving installation will be opened LED light source, this LED light source provides light source for CCD camera, and CCD camera just can contrast with the light of LED light source the image of test target like this.Concrete, CCD camera can be that moral business is reflected U.S. smart 1394CCD industrial camera, and this camera properties is reliable, and clear picture is stable.Exception, CCD camera can be up and down, left and right is adjusted, and owing to adopting non-screw fixed sturcture, therefore adjustment can be carried out at any time.LED light source can be Japanese CCS series LED light-source system, and light-source illuminating system can adopt highlighted without the stroboscopic Japan CCSLED UV square light source of series and supporting controller.CCD camera and LED light source are fixed by support, and the chassis quality of support is large, so the inertia of its support is also large.Proving installation can comprise CCD, and this CCD can line by line scan, concrete, and the CCD of this proving installation has 640x480 pixel and up to the frame per second of 60 frame/seconds.
Concrete, whether sensor, have test target to need to detect for detection of test position place, if any, will send and start test signal to proving installation.Proving installation, be used for receiving and start after test signal, start the image of image capturing system collecting test target, and receive the image that image capturing system sends to the test target collecting, and according to standard picture, image to test target detects, and determines whether this test target exists product defects.The content that the process that the image of concrete test target detects is introduced as above-described embodiment.
The present invention has improved stability and the accuracy of test, and has improved testing efficiency.
Describing is above only a specific embodiment of the present invention, and obviously anyone modification of doing of this area or local replacement under technical scheme of the present invention instructs, all belong to the scope that the claims in the present invention book limits.
Claims (5)
1. a method for contactless test, is characterized in that, comprising:
After test target is fixed in the positive mechanism of the automatic fixed gange of part, sensor detects the current test target that exists, and to proving installation, sends and starts test signal;
Proving installation receives and starts after test signal, starts to detect, and proving installation sends image acquisition message to image capturing system;
Described image capturing system is taken a picture to test target, and the image of test target is sent to proving installation;
Described proving installation has received the image of test target, and according to standard picture, the image of test target is detected, and determines whether this test target exists defect.
2. the method for contactless test as claimed in claim 1, is characterized in that, described according to standard picture, and the image of test target is detected, and determines whether this test target exists defect specifically to comprise:
Proving installation carries out pre-service to the image receiving; Proving installation carries out binary conversion treatment to pretreated image; Proving installation, according to the coordinate of the standard point of standard picture, is proofreaied and correct coordinate system; Coordinate system after proving installation combined standard image and correction, carry out algorithm selection, and according to the algorithm of selecting, test target is tested, and measurement result and the standard picture of the image by contrastive test target, obtain the image of test target and the difference of standard picture;
Proving installation, according to described difference, determines whether described difference is a kind of defect, if a kind of defect is identified defect corresponding to this difference, the defect recognizing is sent to database, preserves.
3. the method for contactless test as claimed in claim 2, is characterized in that, also comprises: proving installation is also according to the defect of identification, to existing the position of defect to mark.
4. a system for contactless test, is characterized in that, comprising: sensor, image capturing system and proving installation; Wherein whether sensor, have test target to need to detect for detection of test position place, if any, will send and start test signal to proving installation; Described proving installation, be used for receiving and start after test signal, start the image of image capturing system collecting test target, and receive the image that image capturing system sends to the test target collecting, and according to standard picture, image to test target detects, and determines whether this test target exists product defects.
5. the system of contactless test as claimed in claim 4, it is characterized in that, described image capturing system comprises CCD camera and LED light source, when image capturing system has received when test target is taken a picture, proving installation will be opened LED light source, and this LED light source provides light source for CCD camera.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018170657A1 (en) * | 2017-03-20 | 2018-09-27 | 深圳配天智能技术研究院有限公司 | Visual inspection system and light field correction method therefor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201218723Y (en) * | 2008-05-30 | 2009-04-08 | 上海锡明光电科技有限公司 | Optoelectronic non-contact type image detection apparatus |
| CN201225985Y (en) * | 2008-06-02 | 2009-04-22 | 天津杰普智能卡有限公司 | Vision sensing system for checking card appearance |
| CN101865861A (en) * | 2010-05-28 | 2010-10-20 | 益伸电子(东莞)有限公司 | Automatic detection system for hardware appearance |
| CN102565083A (en) * | 2012-01-12 | 2012-07-11 | 北京印刷学院 | Offline inspection system and method for printed electronic product |
| CN202710485U (en) * | 2012-08-03 | 2013-01-30 | 杭州良淋电子科技有限公司 | Inspection module of automatic wire rod detection device |
| CN103134757A (en) * | 2013-02-01 | 2013-06-05 | 浙江大学 | Detection system based on binocular heterogeneous medium machine vision and detection method thereof |
-
2013
- 2013-12-11 CN CN201310675426.2A patent/CN103698335B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201218723Y (en) * | 2008-05-30 | 2009-04-08 | 上海锡明光电科技有限公司 | Optoelectronic non-contact type image detection apparatus |
| CN201225985Y (en) * | 2008-06-02 | 2009-04-22 | 天津杰普智能卡有限公司 | Vision sensing system for checking card appearance |
| CN101865861A (en) * | 2010-05-28 | 2010-10-20 | 益伸电子(东莞)有限公司 | Automatic detection system for hardware appearance |
| CN102565083A (en) * | 2012-01-12 | 2012-07-11 | 北京印刷学院 | Offline inspection system and method for printed electronic product |
| CN202710485U (en) * | 2012-08-03 | 2013-01-30 | 杭州良淋电子科技有限公司 | Inspection module of automatic wire rod detection device |
| CN103134757A (en) * | 2013-02-01 | 2013-06-05 | 浙江大学 | Detection system based on binocular heterogeneous medium machine vision and detection method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 杜颜颜: "PCB 板元器件检测系统的研究", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018170657A1 (en) * | 2017-03-20 | 2018-09-27 | 深圳配天智能技术研究院有限公司 | Visual inspection system and light field correction method therefor |
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Effective date of registration: 20231216 Address after: No. 223 Huanhai Road, Dachangshan Island Town, Changhai County, Dalian City, Liaoning Province, 116599 Patentee after: Dalian Yitai Fishery Technology Co.,Ltd. Address before: 116600 Dalian Yunming Automation Technology Co., Ltd., No. 26 Community Mold Special Workshop 2-8, Dalian Development Zone, Liaoning Province Patentee before: DALIAN YUN MING AUTOMATION TECHNOLOGY Co.,Ltd. |
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