CN105827989A - Method and apparatus for inspecting liquid droplet - Google Patents
Method and apparatus for inspecting liquid droplet Download PDFInfo
- Publication number
- CN105827989A CN105827989A CN201510691362.4A CN201510691362A CN105827989A CN 105827989 A CN105827989 A CN 105827989A CN 201510691362 A CN201510691362 A CN 201510691362A CN 105827989 A CN105827989 A CN 105827989A
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- China
- Prior art keywords
- drop
- image
- light source
- taking device
- inspection method
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Links
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000007788 liquid Substances 0.000 title abstract 5
- 238000007689 inspection Methods 0.000 claims description 25
- 239000007921 spray Substances 0.000 claims description 21
- 238000005507 spraying Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Abstract
The invention relates to a method and a device for inspecting liquid drops. The method is used for detecting the liquid drop in the drop discharged from the liquid spraying port, and comprises the following steps: the method of turning on the light source first and then turning on the image capturing device by using the first signal and the second signal is characterized in that on one hand, image capturing is carried out after the brightness of the LED light source is stable, on the other hand, the light source is turned off first under the condition that the image capturing device is still turned on for exposure, and the exposure time of the image capturing device is determined by using the time difference between the turning on of the image capturing device and the turning off of the light source; under the condition of not using high-specification LED light source and image-taking device, the dripping image of good liquid drop can be obtained and the purpose of quick exposure of the image-taking device can be achieved.
Description
Technical field
The invention relates to a kind of inspection method and device thereof, espespecially for inspecting drop inspection method and the device thereof of drop in the drippage discharged by mouth spray.
Background technology
Known ink-jet application technology; it it is the drop will discharged by mouth spray; at such as paper, thin film, circuit board ... wait deposition on substrate to form pattern; and the quality formed in order to ensure pattern on substrate; before performing coating operations, can perform drop inspects operation, utilizes camera to shoot the image of drop in the drippage discharged by mouth spray; and can be combined several images, utilize the quantity of drop, size, speed, track ... etc. standard assess the good no of mouth spray；nullTaiWan, China patent publication No. the 201043474th " bearing calibration of ink jet head unit and ink-jet application method " i.e. discloses a kind of shooting unit shooting the drop ejection state of the ejiction opening ejection of ink gun，From the drop of the ejiction opening ejection of ink gun by LED (LightEmittingDiode，Light emitting diode) illumination，And by CCD (ChargeCoupledDevice，Charge-coupled image sensor) camera shooting，This LED and pulse signal synchronously lighting，CCD camera and pulse signal are synchronously taken into image，And spray unit and pulse signal synchronously perform spray action，Therefore，The ejiction opening of ink gun and pulse signal synchronously spray drop，When using the situation of this ejection state shooting unit，The drop that can will spray from the ejiction opening of ink gun，Take as static image.
Known drop is inspected when spray unit ejection drop, due to the capture of drop in using LED light source to drip with the Tong Bu unlatching of same signal with CCD camera, but, general LED light source is after unlatching, can postpone a period of time just can arrive operation brightness, even if using the great power LED of high standard, also there may be, at its leading portion, the situation that brightness is unstable, so that the image obtained is not normal；In addition, these cameras quickly drip the image of drop to obtain, and need to quickly expose, and the shortest time of exposure depends on the shutter speed of camera itself, to reach the purpose of instantaneous exposure, it is necessary to use shutter speed faster high standard camera to make cost increase.
Summary of the invention
Therefore, the purpose of the present invention, it is to provide a kind of drop inspection method that can obtain good image.
It is another object of the present invention to provide a kind of drop inspection method making camera instantaneous exposure.
It is still a further object of the present invention is to provide a kind of device in order to perform described drop inspection method.
According to the drop inspection method of the object of the invention, in order to inspect drop in the drippage discharged by mouth spray, including: provide a light source, in order to the drop of drippage to be illuminated；There is provided an image-taking device, in order to shoot drop state in drippage track；There is provided a controller, in order to export one first signal and a secondary signal；Use the first signal to control light source to open, when light-source brightness reaches preset value, use secondary signal to control image-taking device and open drop capture.
According to the drop inspection method of another object of the present invention, in order to inspect drop in the drippage discharged by mouth spray, including: provide a light source, in order to the drop of drippage to be illuminated；There is provided an image-taking device, in order to shoot drop state in drippage track；Close previous Preset Time at light source, open image-taking device and drop capture, the time that image-taking device is opened light source closedown are set to the time of exposure of image-taking device.
According to the drop checking device of another object of the present invention, in order to inspect drop in the drippage discharged by mouth spray, including: in order to perform such as the device of described drop inspection method.
The drop inspection method of the embodiment of the present invention and device thereof, the first signal is utilized first to open after light source again in the way of secondary signal opens image-taking device, the most first after light-source brightness is stable, carry out drop capture again, on the other hand, by when image-taking device still exposes in unlatching, close light source in advance, the time difference utilizing image-taking device to open light source closedown is set to the time of exposure of image-taking device, when being not required to use high standard LED light source and image-taking device, the drippage image of good drop and the purpose reaching image-taking device instantaneous exposure also can be obtained.
Accompanying drawing explanation
For the above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing, the detailed description of the invention of the present invention is elaborated, wherein:
Fig. 1 is mechanism's configuration schematic diagram of the embodiment of the present invention.
Fig. 2 is that the controller output of the embodiment of the present invention triggers signal, the first signal, the schematic diagram of secondary signal.
Fig. 3 is the light source of the embodiment of the present invention, the sequential chart of image-taking device start.
Fig. 4 is the different drops capture schematic diagram at diverse location of the embodiment of the present invention.
Fig. 5 is the combination image schematic diagram of the embodiment of the present invention.
Fig. 6 is the image-taking device time of exposure schematic diagram of the embodiment of the present invention.
1 jet head 11 mouth spray
2 light source 3 image-taking devices
4 controller 41 first controllers
411 trigger signal 42 second controller
421 first signal 422 secondary signals
A applying area B viewport
C disposable box F drop
P substrate T1 Preset Time
T2 T3 interval time interval time
T4 T5 interval time interval time
T6 preset time T 7 time of exposure
Detailed description of the invention
Referring to Fig. 1, the drop inspection method of the embodiment of the present invention can use device as depicted to perform, including:
One jet head 1, which is provided with multiple mouth spray 11, and drop F is discharged by this mouth spray 11 and persistently drips until falling within substrate P or disposable box C；
One light source 2, it is that LED (lightemittingdiode, light emitting diode) is constituted, and is located at the mouth spray 11 of this jet head 1, is illuminated the drop F of drippage；
One image-taking device 3, it is CCD (chargecoupleddevice, charge-coupled image sensor) camera, corresponding with this light source 2, in order to shoot drop F state in drippage track；
One controller 4, exportable signal controls jet head 1, light source 2 and the open and close of image-taking device 3；
Jet head 1 can be interval mobile in an an applying area A and viewport B two, before operation to be coated, jet head 1 first moves to discharge in viewport B drop F, to inspect the discharge state of drop F, wherein, drop F can fall into disposable box C after the exit, this disposable box C can be linked to the reservoir (not shown) of jet head 1, to carry out recycling of drop F, after inspecting, jet head 1 is retracted applying area A and substrate P is carried out the coating operations of pattern.
Refer to Fig. 2, this controller 4 includes one first controller 41 and a second controller 42, this first controller 41 first exports a triggering signal 411 branching to jet head 1 and second controller 42 respectively, on the one hand drop F is made to be discharged by mouth spray 11, on the one hand second controller 42 is made to export one first signal 421 and a secondary signal 422, the control opened and closed light source 2 and image-taking device 3 respectively, this triggering signal 411, first signal 421, secondary signal 422 are pulsed signal.
Refer to Fig. 1,2,3, the embodiment of the present invention is on the implementation, when triggering signal 411 and making drop F discharge, deliver a signal to second controller 42 simultaneously, make second controller 42 first export the first signal 421 to control light source 2 and open, light source 2 brightness is made to arrive the preset value tended towards stability through one section of preset time T 1 after light source 2 is opened, export secondary signal 422 again to control image-taking device 3 and open drop F capture, to obtain good image, and before secondary signal 422 controls image-taking device 3 closedown, the first signal 421 first controls light source 2 and closes.
Refer to Fig. 1, 2, 6, another embodiment of the embodiment of the present invention, use the first signal 421 to control light source 2 to open, and close previous preset time T 6 at light source 2, secondary signal 422 is used to open image-taking device 3 to drop F capture, image-taking device 3 opens the time that light source 2 closes is set to the time of exposure T7 of image-taking device 3, wherein T6=T7, and light source 2 image-taking device 3 when closed not yet closes, it is to control open and close time of light source 2 to control the time of exposure T7 of image-taking device 3, and unconventional time of exposure T7 is image-taking device 3 and opens to and close elapsed time.
nullRefer to Fig. 3、4，In order to inspect drop F state of diverse location in drippage track，Different drop F need to be carried out capture operation at diverse location，The image that three capture operations obtain is as shown in Figure 4，It is after each drop F discharges，The light source 2 of capture operation can gradually elongate with each opening time of image-taking device 3，I.e. light source 2 can close T3 interval time of unlatching for the third time from T2 interval time of closedown for the first time to second time unlatching less than second time，And image-taking device 3 is because coordinating the open and close time of light source 2，Therefore image-taking device 3 can close T5 interval time of unlatching for the third time from T4 interval time of closedown for the first time to second time unlatching less than second time，To obtain the different drop F image at diverse location，Again several images are combined，The good no of mouth spray assessed by dynamic combined image as shown in Figure 5.
The drop inspection method of the embodiment of the present invention and device thereof, it is to utilize the first signal 421 first to open after light source 2 again in the way of secondary signal 422 opens image-taking device 3, on the one hand after LED light source 2 brightness stability, drop F capture is first carried out again, on the other hand, by when image-taking device 3 still exposes in unlatching, close light source 2 in advance, the time difference utilizing image-taking device 3 to open light source 2 closedown is set to the time of exposure T7 of image-taking device 3, when being not required to use high standard LED light source 2 and image-taking device 3, also the drippage image of good drop F and the purpose reaching image-taking device 3 instantaneous exposure can be obtained.
Although the present invention discloses as above with preferred embodiment; so it is not limited to the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when making a little amendment and perfect, therefore protection scope of the present invention is when with being as the criterion that claims are defined.
Claims (13)
1. a drop inspection method, in order to inspect drop in the drippage discharged by mouth spray, including:
There is provided a light source, in order to the drop of drippage to be illuminated；
There is provided an image-taking device, in order to shoot drop state in drippage track；
There is provided a controller, in order to export one first signal and a secondary signal；
Use the first signal to control light source to open, when light-source brightness reaches preset value, use secondary signal to control image-taking device and open drop capture.
2. drop inspection method as claimed in claim 1, it is characterised in that this controller includes one first controller and a second controller.
3. drop inspection method as claimed in claim 2, it is characterised in that this first controller first exports a triggering signal branching to a jet head and second controller respectively.
4. drop inspection method as claimed in claim 2, it is characterised in that this second controller exports this first signal and this secondary signal.
5. drop inspection method as claimed in claim 1, it is characterised in that before secondary signal controls image-taking device closedown, the first signal first controls light source and closes.
6. drop inspection method as claimed in claim 1, it is characterised in that this preset value is the Time Calculation after opening with light source.
7. a drop inspection method, in order to inspect drop in the drippage discharged by mouth spray, including:
There is provided a light source, in order to the drop of drippage to be illuminated；
There is provided an image-taking device, in order to shoot drop state in drippage track；
Close previous Preset Time at light source, open image-taking device and drop capture, the time that image-taking device is opened light source closedown are set to the time of exposure of image-taking device.
8. drop inspection method as claimed in claim 7, it is characterised in that this light source is controlled to be turned on and off by one first signal.
9. drop inspection method as claimed in claim 7, it is characterised in that this image-taking device is controlled to be turned on and off by a secondary signal.
10. drop inspection method as claimed in claim 7, it is characterised in that this light source image-taking device when closed is not yet closed.
11. drop inspection methods as claimed in claim 7, it is characterised in that this light source is LED.
12. drop inspection methods as claimed in claim 7, it is characterised in that this image-taking device is CCD camera.
13. 1 kinds of drop checking devices, in order to inspect drop in the drippage discharged by mouth spray, including: in order to perform the device of drop inspection method as described in any one of claim 1 to 12.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW104102857 | 2015-01-28 | ||
| TW104102857A TWI534013B (en) | 2015-01-28 | 2015-01-28 | Method and apparatus for viewing droplets |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105827989A true CN105827989A (en) | 2016-08-03 |
| CN105827989B CN105827989B (en) | 2019-03-08 |
Family
ID=56509314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510691362.4A Expired - Fee Related CN105827989B (en) | 2015-01-28 | 2015-10-22 | Method and apparatus for inspecting liquid droplet |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105827989B (en) |
| TW (1) | TWI534013B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112188051A (en) * | 2020-09-23 | 2021-01-05 | 威海华菱光电股份有限公司 | Control method and control device of camera system and camera device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101622134A (en) * | 2005-04-25 | 2010-01-06 | 株式会社爱发科 | Drop analysis system |
| CN101837683A (en) * | 2009-03-18 | 2010-09-22 | 精工爱普生株式会社 | Drop is discharged inspection method, testing fixture and the droplet discharge apparatus of head |
| CN102744971A (en) * | 2011-04-19 | 2012-10-24 | 精工爱普生株式会社 | Liquid droplet ejecting apparatus and liquid droplet ejecting method |
| CN103702834A (en) * | 2011-05-27 | 2014-04-02 | 惠普发展公司，有限责任合伙企业 | Drop detector |
| CN103917303A (en) * | 2011-11-07 | 2014-07-09 | 株式会社爱发科 | Inkjet device and droplet-measurement method |
| CN104065930A (en) * | 2014-06-30 | 2014-09-24 | 青岛歌尔声学科技有限公司 | Vision aid method and vision aid device integrating camera module and optical sensor |
-
2015
- 2015-01-28 TW TW104102857A patent/TWI534013B/en not_active IP Right Cessation
- 2015-10-22 CN CN201510691362.4A patent/CN105827989B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101622134A (en) * | 2005-04-25 | 2010-01-06 | 株式会社爱发科 | Drop analysis system |
| CN101837683A (en) * | 2009-03-18 | 2010-09-22 | 精工爱普生株式会社 | Drop is discharged inspection method, testing fixture and the droplet discharge apparatus of head |
| CN102744971A (en) * | 2011-04-19 | 2012-10-24 | 精工爱普生株式会社 | Liquid droplet ejecting apparatus and liquid droplet ejecting method |
| CN103702834A (en) * | 2011-05-27 | 2014-04-02 | 惠普发展公司，有限责任合伙企业 | Drop detector |
| CN103917303A (en) * | 2011-11-07 | 2014-07-09 | 株式会社爱发科 | Inkjet device and droplet-measurement method |
| CN104065930A (en) * | 2014-06-30 | 2014-09-24 | 青岛歌尔声学科技有限公司 | Vision aid method and vision aid device integrating camera module and optical sensor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112188051A (en) * | 2020-09-23 | 2021-01-05 | 威海华菱光电股份有限公司 | Control method and control device of camera system and camera device |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI534013B (en) | 2016-05-21 |
| CN105827989B (en) | 2019-03-08 |
| TW201627170A (en) | 2016-08-01 |
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Granted publication date: 20190308 Termination date: 20201022 |