CN106042636A - Area-array camera based online imaging system and method of printed matter - Google Patents
Area-array camera based online imaging system and method of printed matter Download PDFInfo
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- CN106042636A CN106042636A CN201610580855.5A CN201610580855A CN106042636A CN 106042636 A CN106042636 A CN 106042636A CN 201610580855 A CN201610580855 A CN 201610580855A CN 106042636 A CN106042636 A CN 106042636A
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- leaflet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/0036—Devices for scanning or checking the printed matter for quality control
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- Engineering & Computer Science (AREA)
- Quality & Reliability (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
The invention discloses an area-array camera based online imaging system of a printed matter. The system comprises an area-array camera of which an imaging lens faces the printed matter, a first moving mechanism which is kept in the same moving direction with the printed matter, a servo motor used for driving the first moving mechanism, a photoelectric encoder for converting an angular velocity omega of a transmission roller or a printing roller of the printed matter into pulse or digital quantity through photoelectric conversion, and a servo controller for calculating a linear velocity v line of a corresponding roller surface based on the angular velocity omega, fed back by the photoelectric encoder, of the transmission roller or the printing roller so as to control the servo motor to drive the first moving mechanism to move synchronously with the printed matter or a set area of the printed matter. With the adoption of the area-array camera based online imaging system of the printed matter, the technical problem of the online imaging definition of the area-array camera to the printed matter can be solved; the system can be specifically applied to a printing device to obtain a high definition image.
Description
Technical field
The present invention relates to a kind of online imaging system of leaflet, a kind of leaflet based on area array cameras becomes online
As system, and a kind of online formation method of leaflet based on area array cameras.
Background technology
Advanced printer, its print speed printing speed has generally reached 200 ms/min, the highest.Give leaflet at high speed
Online quality control brings challenge greatly, is embodied in:
First, in the case of high speed printing, the collection difficulty of image；
Secondly, in the case of high speed printing, quality problems once occur, it will be continuous print, large-area scrap；
Furthermore, printer needs the most accurate tension force to control so that cannot sample leaflet in printing process；
Finally, unreeling → print → printing process of rolling in, if product cannot be carried out effective quality-monitoring, once
There is printing issues, then all of leaflet all will be scrapped.
At present, existing leaflet on-line checking scheme has following three kinds:
1, quality testing based on stroboscopic instrument；By synchronizing stroboscope and printer, when leaflet to ad-hoc location (such as
Each product length) give the shortest and rapid flash of light, operator directly observe printed matter surface, can be at continuous printing
During see static printing surface, the program realizes simple, and low cost however it is necessary that quality assurance person possesses abundant warp
Test, there is problems in that simultaneously
1.1, quality assurance person must pass through direct visual perception, in the case of group flashing light, arises that vision in the short time
Tired；
1.2, provisional imaging, it is impossible to comprehensively observe；
1.3, being difficult to, due to stroboscope and printer, the synchronization accomplished truly, both are constantly present certain error, because of
The printing surface that this quality assurance person is observed visually can produce continuous print drift, it is impossible to observes details.
2, imaging system based on line-scan digital camera, the program is the use line-scan digital camera image capture device as leaflet,
By installing encoder on the printer, gather continuous print pixel column, finally by capture card, image is spliced, and
Show on display.The program there is problems in that
2.1, equipment cost is high, and the line-scan digital camera price of 4000 pixels is about 3-4 ten thousand yuan；
2.2, imaging area is little, 4000 pixels, if according to quality control requirement 0.05 millimeter, its area only has 4 centimetres；
2.3, under high speed printing, precision is unable to reach requirement, is shooting according to the line-scan digital camera of 20000 row mentioned before/second
During the leaflet of 200 ms/min, on each pixel precision correspondence leaflet 0.167 millimeter, 0.05 millimeter cannot be met far away
The quality control requirement of (5).
3, coordinate the imaging system of flash of light control based on area array cameras, the program there is problems in that
3.1, owing to the shutter speed of usual area array cameras was at about 1/1000th seconds, few mm professional camera special can reach 10000
/ mono-second, according to 200 ms/min, the print speed printing speed of i.e. 3.3 meter per seconds, the most at last shutter speed of 1/10000th seconds, soon
In the time that door is opened, printing paper has created the displacement of 0.33 millimeter, cannot meet far away the quality control of 0.05 millimeter
Precision processed；Being exposed by the flash time of flasher (such as flash lamp), conventional its flash time of flash unit exists simultaneously
1/1000 to 1/3000 second, an ibid description, such time of exposure cannot meet requirement；In recent years, the flash lamp of specialty
Can reach 1/10000 second, even 1/20000 second, such flash unit was expensive, and be nominally 1/20000 it
The flash unit of one second, before in fact referring to that its brightness exceedes after maximum brightness 50% to luminance-reduction to maximum brightness 50%
This time interval, but in actual application, brightness is typically this section more than 50% during this period of time less than maximum brightness 50%
The twice of time, flash of light during this period of time also can imaging on the sensor of area array cameras, thus cause photograph obscure；Such as certain product
The board flash fire persistent period is expressed as flash duration t=0.5:1/2000S, the luminescence that this flash lamp is real
Time is 3/2000S, about at 1/700S.Cause, when leaflet is shot by above-mentioned area array cameras, due to the height of leaflet
Speed motion, imaging is the fuzzyyest；
3.2, due to the bad assurance of aperture time, it is impossible to the position of the leaflet that is taken is positioned, a lot of repeats bits is caused
The candid photograph put, strengthens the difficulty of quality control.
Summary of the invention
The invention aims to solve above-mentioned the deficiencies in the prior art and a kind of printing based on area array cameras is provided
The online imaging system of product.
To achieve these goals, the online imaging system of a kind of based on area array cameras leaflet designed by the present invention,
Comprising:
One area array cameras, the imaging lens of this area array cameras faces leaflet；
One the first motion, this first motion keeps consistent with the direction of motion of leaflet；
One servomotor, this servomotor is for driving the first motion；
One photoelectric encoder, this photoelectric encoder passes through the opto-electronic conversion delivery roll by leaflet or the angular velocity omega of print roller
It is converted into pulse or digital quantity；
And, a servo controller, delivery roll or the angle of print roller that this servo controller is fed back by photoelectric encoder are fast
Degree ω is calculated linear velocity v of corresponding roll surfaceLine, and then control driven by servomotor the first motion and leaflet or printing
The setting regions of product realizes being synchronized with the movement；
Wherein, above-mentioned area array cameras is fixed on the first motion, and makees synchronization action with it；Above-mentioned servomotor defeated
Shaft and the first motion are in transmission connection mutually；Above-mentioned servo controller is electric with servo with photoelectric encoder and servo controller
The equal signal of machine connects, and photoelectric encoder is installed to the print roller or delivery roll of printer.
Above-mentioned a kind of online imaging system of leaflet based on area array cameras, because in area array cameras shooting process, face battle array
Camera and leaflet are geo-stationary, it is possible to obtain gem-pure imaging picture.
Position tune can be carried out for convenience on the overall direction perpendicular in the leaflet direction of motion of first motion
It is whole, so that the camera lens of area array cameras can be carried out on the perpendicular direction of the leaflet direction of motion on the first motion
Position adjustments, change area array cameras camera lens to leaflet region, i.e. change the imaging region of area array cameras, above-mentioned a kind of base
The online imaging system of leaflet in area array cameras, it also includes second motion, this second motion and printing
The traffic direction of both product keeps vertical；Above-mentioned first motion is articulated on the second motion, and along second
The direction of motion of motion can back and forth regulate.
Preferred as one, above-mentioned first motion includes: first rail brackets, at described first rail brackets
On be hinged with a pair belt pulley, the wheel central point of belt pulley is located on the same line by this, and rectilinear direction and leaflet
Straight line conveying direction keeping parallelism；Article one, driving belt, this driving belt drive sleeve is connected on above-mentioned a pair belt pulley；And,
One is fixed to the slide block on driving belt, and this slide block is formed area array cameras fixed bit；Wherein, above-mentioned a pair belt pulley
In any one with aforementioned in servomotor be in transmission connection mutually, and this servomotor is fixed to the first above-mentioned rail brackets
On.
Above-mentioned second motion includes: second rail brackets, is provided with a pair rotation at described second rail brackets
Bearing block, the bearing centre point of rotary shaft bearing is located on the same line by this, and rectilinear direction is defeated with the straight line of leaflet
Direction is sent to keep vertical；Article one, screw mandrel, in the two ends of this screw mandrel lining respectively to a corresponding rotary shaft bearing；One cunning
Platform, in above-mentioned screw mandrel rotation process, this slide unit can move linearly along the axis direction of screw mandrel；And, an electricity
Machine, this motor is in transmission connection mutually with above-mentioned screw mandrel；Wherein, aforesaid first rail brackets is fixed on above-mentioned slide unit.
Meanwhile, additionally providing a kind of online formation method of leaflet based on area array cameras in the present invention, it specifically includes
Following steps:
The delivery roll of leaflet or the angular velocity omega of print roller are converted into pulse or number by opto-electronic conversion by a, photoelectric encoder
Word amount feeds back to the step of servo controller；
Delivery roll or the angular velocity omega of print roller that b, servo controller are fed back by photoelectric encoder are calculated corresponding roll surface
Linear velocity vLine, and then control driven by servomotor the first motion, promote setting of area array cameras and leaflet or leaflet
Determine the step that region realizes being synchronized with the movement；
C, area array cameras and leaflet complete the step of shooting operation in the case of being synchronized with the movement.
Preferred as one, a kind of online formation method of leaflet based on area array cameras, its chain of command array camera and print
What the setting regions realization of brush product was synchronized with the movement specifically comprises the following steps that
A, the movement locus of leaflet is preset one specify position, and be labeled as O1Step；
The angular velocity omega of delivery roll that b, servo controller are fed back by photoelectric encoder or print roller calculates that print roller is actual to be turned
Over-angle value thus to the setting regions central point O needing imaging on leaflet2Carry out real-time tracing, and calculate this and need setting of imaging
Determine regional center point O2In distance step a, specific bit puts O1Air line distance S1Step；
Delivery roll or the angular velocity omega of print roller that c, servo controller are fed back by photoelectric encoder are calculated corresponding roll surface
Linear velocity vLine, and it is calculated in step b the setting regions central point O needing imaging2Move to specific bit in step a and put O1's
Time-consuming t1Step；
D, servo controller calculate the optical center point O of area array cameras on the first motion3In distance step a, specific bit puts O1
Air line distance S2, and setting the movement velocity of the first motion as VFirst motionIn the case of, it is calculated this first fortune
The optical center point O of area array cameras on motivation structure3Move to given step a specific bit and put O1Time-consuming t2(t2＞ t1) step；
E, e, servo-driver calculates t2With t1Both time difference t△, control aforementioned in servomotor by this time difference
t△Drive the first motion in advance, promote the optical center point O of area array cameras 13Setting regions central point O with leaflet2With
Step arrives specific bit in step a and puts O1, servo controller chain of command array camera and leaflet realize the step being synchronized with the movement afterwards.
The online imaging system of a kind of based on area array cameras leaflet that the present invention obtains, it specifically should on printing equipment
With rear, because in area array cameras shooting process, area array cameras and leaflet are geo-stationary, if therefore area array cameras according to
The bright brightness of shooting environmental carrys out Self Adaptive Control flash lamp, it becomes possible to obtain gem-pure imaging picture, convenient sets printing
Standby printing effect monitors in real time, thus ensures the printing effect of printing equipment.
Accompanying drawing explanation
Fig. 1 is the structural representation that embodiment 1 is provided a kind of online imaging system of leaflet based on area array cameras；
Fig. 2 is servo controller operation principle schematic diagram in embodiment 1；
Fig. 3 is the structural representation that embodiment 2 is provided a kind of online imaging system of leaflet based on area array cameras；
Fig. 4 is the structural representation of the second motion in embodiment 2.
In figure: area array cameras the 1, first motion the 2, first rail brackets 2-1, belt pulley 2-2, driving belt 2-3, cunning
Block 2-4, servomotor 3, photoelectric encoder 4, servo controller the 5, second motion the 6, second rail brackets 6-1, rotary shaft
Bearing 6-2, screw mandrel 6-3, slide unit 6-4, motor 6-5, delivery roll 7, print roller 8.
Detailed description of the invention
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Embodiment 1:
As depicted in figs. 1 and 2, the online imaging system of a kind of based on area array cameras leaflet provided in the present embodiment, its
Including:
One area array cameras 1, the imaging lens of this area array cameras 1 faces leaflet；
One the first motion 2, this first motion 2 includes: a first rail brackets 2-1, at described first guide rail
Being hinged with a pair belt pulley 2-2 on support 2-1, the wheel central point of belt pulley 2-2 is located on the same line by this, and straight line side
To the straight line conveying direction keeping parallelism with leaflet；Article one, driving belt 2-3, this driving belt 2-3 drive sleeve is connected to above-mentioned
On a pair belt pulley 2-2；And, the slide block 2-4 that is fixed on driving belt 2-3, this slide block 2-4 is formed with face battle array
Camera 1 fixed bit；
One servomotor 3, this servomotor 3 is in transmission connection with any one belt pulley 2-2 phase above-mentioned, and this servomotor
3 are fixed on the first above-mentioned rail brackets 2-1；
One photoelectric encoder 4, this photoelectric encoder 4 is fixed to the side of the delivery roll 7 of leaflet, and is incited somebody to action by opto-electronic conversion
The angular velocity omega of corresponding delivery roll 7 is converted into pulse signal；
And, a servo controller 5, the angular velocity omega of the delivery roll 7 that this servo controller 5 is fed back by photoelectric encoder 4
It is calculated linear velocity v of corresponding roll surfaceLine, and then control servomotor 3 drive the first motion 2 to run at the same rate,
Guarantee that the area array cameras 1 on the first motion 2 realizes being synchronized with the movement with leaflet；
Wherein, above-mentioned area array cameras 1 is fixed on the first motion 2, and makees synchronization action with it；Above-mentioned servo controller
5 signals equal with servomotor 3 with photoelectric encoder 4 and servo controller 5 are connected.
Above-mentioned a kind of online imaging system of leaflet based on area array cameras, because in area array cameras 1 shooting process, face battle array
Camera 1 and leaflet are geo-stationary, it is possible to obtain gem-pure imaging picture.
Meanwhile, additionally providing a kind of online formation method of leaflet based on area array cameras in the present embodiment, it specifically wraps
Include following steps:
The angular velocity omega of the delivery roll 7 of leaflet is converted into pulse signal by opto-electronic conversion and feeds back to by a, photoelectric encoder 4
The step of servo controller 5；
The angular velocity omega of the delivery roll 7 that b, servo controller 5 are fed back by photoelectric encoder 4 is calculated the linear speed of corresponding roll surface
Degree vLine, and then control servomotor 3 and drive the first motion 2, promote area array cameras 1 and leaflet to realize the step being synchronized with the movement
Suddenly；
C, area array cameras 1 complete the step of shooting operation with leaflet in the case of being synchronized with the movement.
Embodiment 2:
The online imaging system of a kind of based on area array cameras leaflet provided in the present embodiment and method, a kind of base therein
The online imaging system of leaflet in area array cameras is the most consistent with embodiment 1, but when by advance in the fortune of leaflet
Set one on dynamic track and specify position, and be labeled as O1In the case of, the servo controller 5 described in the present embodiment can lead to
The angular velocity omega of the delivery roll 7 or print roller 8 of crossing photoelectric encoder 4 feedback calculates that print roller 8 is actual turns over angle value thus right
The setting regions central point O of imaging is needed on leaflet2Carry out real-time tracing, and calculate this setting regions central point O needing imaging2
Apart from above-mentioned appointment position O1Air line distance S1, and calculate the above-mentioned setting regions central point O needing imaging2Move to specific bit
Put O1Time-consuming t1, it can also calculate the optical center point O of area array cameras 1 on the first motion 23Apart from above-mentioned specific bit
Put O1Air line distance S2, and setting the movement velocity of the first motion 2 as V2In the case of, it is calculated this first fortune
The optical center point O of area array cameras 1 on motivation structure 23Move to specifying position O1Time-consuming t2(t2＞ t1), finally, above-mentioned servo is driven
Dynamic device calculates t2With t1Both time difference t△, control servomotor 3 by this time difference t△Drive the first motion in advance
2, promote the optical center point O of area array cameras 13Setting regions central point O with leaflet2Synchronously arrive at above-mentioned appointment position O1,
Hereafter servo controller 5 just controls above-mentioned area array cameras 1 and leaflet and realizes being synchronized with the movement.
The online formation method of a kind of based on area array cameras leaflet provided in the present embodiment, its formation method is concrete
Comprise the following steps:
A, the movement locus of leaflet is preset one specify position, and be labeled as O1Step；
The angular velocity omega of the delivery roll 7 that b, servo controller 5 are fed back by photoelectric encoder 4 calculates that print roller 8 is actual turns over angle
Angle value thus to the setting regions central point O needing imaging on leaflet2Carry out real-time tracing, and calculate this setting district needing imaging
Territory central point O2In distance step a, specific bit puts O1Air line distance S1Step；
The angular velocity omega of the delivery roll 7 that c, servo controller 5 are fed back by photoelectric encoder 4 is calculated the linear speed of corresponding roll surface
Degree v1, and it is calculated in step b the setting regions central point O needing imaging2Move to specific bit in step a and put O1Time-consuming t1
Step；
D, servo controller 5 calculate the optical center point O of area array cameras 1 on the first motion 23Specific bit in distance step a
Put O1Air line distance S2, and setting the movement velocity of the first motion 2 as V2In the case of, it is calculated this first fortune
The optical center point O of area array cameras 1 on motivation structure 23Move to given step a specific bit and put O1Time-consuming t2(t2＞ t1) step
Suddenly；
E, servo-driver calculates t2With t1Both time difference t△, control aforementioned in servomotor 3 by this time difference
t△Drive the first motion 2 in advance, promote the optical center point O of area array cameras 13Setting regions central point O with leaflet2
Synchronously arrive at specific bit in step a and put O1, servo controller chain of command array camera 1 and leaflet realize the step being synchronized with the movement afterwards
Suddenly.
Embodiment 3:
The online imaging system of a kind of based on area array cameras leaflet provided in the present embodiment, the first fitness machine for convenience
Structure 2 entirety can carry out position adjustment on the perpendicular direction of the leaflet direction of motion, so that on the first motion 2
The camera lens of area array cameras 1 can carry out position adjustments on the perpendicular direction of the leaflet direction of motion, changes area array cameras 1 mirror
Head to leaflet region, i.e. change area array cameras 1 imaging region, above-mentioned a kind of leaflet based on area array cameras is online
Imaging system, as shown in Figure 3 and Figure 4, a kind of online imaging system of leaflet based on area array cameras provided in the present embodiment,
It also includes that second motion 6, this second motion 6 keep vertical with the traffic direction of leaflet；Above-mentioned
First motion 2 is articulated on the second motion 6, and can carry out along the direction of motion of the second motion 6
Reciprocal regulation.
Above-mentioned second motion 6 includes: a second rail brackets 6-1, is provided with one at described second rail brackets 6-1
To rotary shaft bearing 6-2, the bearing centre point of rotary shaft bearing 6-2 is located on the same line by this, and rectilinear direction and print
The straight line conveying direction of brush product keeps vertical；Article one, the two ends of screw mandrel 6-3, this screw mandrel 6-3 lining respectively turns to corresponding one
In moving axis bearing 6-2；One slide unit 6-4, in above-mentioned screw mandrel 6-3 rotation process, this slide unit 6-4 can be along the axle of screw mandrel 6-3
Line direction moves linearly；And, a motor 6-5, this motor 6-5 are in transmission connection with above-mentioned screw mandrel 6-3 phase；Wherein, front
The the first rail brackets 2-1 stated is fixed on above-mentioned slide unit 6-4.
Claims (6)
1. the online imaging system of leaflet based on area array cameras, is characterized in that including:
One area array cameras (1), the imaging lens of this area array cameras (1) faces leaflet；
One the first motion (2), this first motion (2) keeps consistent with the direction of motion of leaflet；
One servomotor (3), this servomotor (3) is for driving the first motion (2)；
One photoelectric encoder (4), this photoelectric encoder (4) by opto-electronic conversion by the delivery roll (7) of leaflet or print roller
(8) angular velocity omega is converted into pulse or digital quantity；
And, a servo controller (5), delivery roll (7) that this servo controller (5) is fed back by photoelectric encoder (4) or
The angular velocity omega of print roller (8) is calculated linear velocity v of corresponding roll surfaceLine, and then control servomotor (3) driving the first motion
Mechanism (2) realizes being synchronized with the movement with the setting regions of leaflet or leaflet；
Wherein, above-mentioned area array cameras (1) is fixed on the first motion (2), and makees synchronization action with it；Above-mentioned servo electricity
Output shaft and first motion (2) of machine (3) are in transmission connection mutually；Above-mentioned servo controller (5) and photoelectric encoder (4) and
Servo controller (5) and servomotor (3) all signals are connected, and photoelectric encoder (4) installation to printer print roller (8) or
On delivery roll (7).
2. the online imaging system of leaflet based on area array cameras, is characterized in that it also includes second motion
(6), this second motion (6) keeps vertical with the traffic direction of leaflet；Above-mentioned first motion (2) is movable even
It is connected on the second motion (6), and can back and forth regulate along the direction of motion of the second motion (6).
A kind of online imaging system of leaflet based on area array cameras the most according to claim 1 and 2, is characterized in that above-mentioned
First motion (2) including:
One the first rail brackets (2-1), is hinged with a pair belt pulley (2-2) on described first rail brackets (2-1), and this is right
The wheel central point of belt pulley (2-2) is located on the same line, and rectilinear direction keeps flat with the straight line conveying direction of leaflet
OK；
Article one, driving belt (2-3), this driving belt (2-3) drive sleeve is connected on above-mentioned a pair belt pulley (2-2)；
And, the slide block (2-4) that is fixed on driving belt (2-3), this slide block (2-4) is formed with area array cameras
(1) fixed bit；
Wherein, any one in above-mentioned a pair belt pulley (2-2) with aforementioned in servomotor (3) be in transmission connection mutually, and should
Servomotor (3) is fixed on above-mentioned the first rail brackets (2-1).
A kind of online imaging system of leaflet based on area array cameras the most according to claim 1 and 2, is characterized in that above-mentioned
Second motion (6) including:
One the second rail brackets (6-1), is provided with pair of rotary axes bearing (6-2) described second rail brackets (6-1), and this is right
The bearing centre point of rotary shaft bearing (6-2) is located on the same line, and the straight line conveying direction of rectilinear direction and leaflet
Keep vertical；
Article one, screw mandrel (6-3), in the two ends of this screw mandrel (6-3) lining respectively to a corresponding rotary shaft bearing (6-2)；
One slide unit (6-4), in above-mentioned screw mandrel (6-3) rotation process, this slide unit (6-4) can be along the axis of screw mandrel (6-3)
Direction moves linearly；
And, a motor (6-5), this motor (6-5) is in transmission connection mutually with above-mentioned screw mandrel (6-3)；
Wherein, aforesaid first rail brackets (2-1) is fixed on above-mentioned slide unit (6-4).
A kind of online imaging system of leaflet based on area array cameras the most according to claim 3, is characterized in that above-mentioned
Two motions (6) including:
One the second rail brackets (6-1), is provided with pair of rotary axes bearing (6-2) described second rail brackets (6-1), and this is right
The bearing centre point of rotary shaft bearing (6-2) is located on the same line, and the straight line conveying direction of rectilinear direction and leaflet
Keep vertical；
Article one, screw mandrel (6-3), in the two ends of this screw mandrel (6-3) lining respectively to a corresponding rotary shaft bearing (6-2)；
One slide unit (6-4), in above-mentioned screw mandrel (6-3) rotation process, this slide unit (6-4) can be along the axis of screw mandrel (6-3)
Direction moves linearly；
And, a motor (6-5), this motor (6-5) is in transmission connection mutually with above-mentioned screw mandrel (6-3)；
Wherein, aforesaid first rail brackets (2-1) is fixed on above-mentioned slide unit (6-4).
6. the online formation method of leaflet based on area array cameras, is characterized in that comprising the steps:
The delivery roll (7) of leaflet or the angular velocity omega of print roller (8) are converted into by a, photoelectric encoder (4) by opto-electronic conversion
Pulse or digital quantity feed back to the step of servo controller (5)；
Delivery roll (7) or the angular velocity omega of print roller (8) that b, servo controller (5) are fed back by photoelectric encoder (4) calculate
Obtain linear velocity v of corresponding roll surfaceLine, and then control servomotor (3) drive the first motion (2), promote area array cameras (1)
The step that setting regions realization with leaflet or leaflet is synchronized with the movement；
C, area array cameras (1) and leaflet complete the step of shooting operation in the case of being synchronized with the movement.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108120718A (en) * | 2016-11-29 | 2018-06-05 | 研祥智能科技股份有限公司 | Products detection system based on machine vision |
| WO2020147713A1 (en) * | 2019-01-15 | 2020-07-23 | 南京中禧智能科技有限公司 | Detection device, system and method |
| CN112019709A (en) * | 2019-05-31 | 2020-12-01 | 松下i-PRO传感解决方案株式会社 | Camera device and manufacturing system |
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