CN104841646B - The de-burring machine and impurity-removing method of a kind of different-time exposure and multispectral imaging - Google Patents
The de-burring machine and impurity-removing method of a kind of different-time exposure and multispectral imaging Download PDFInfo
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Abstract
The invention discloses a kind of de-burring machine and impurity-removing method based on different-time exposure and multispectral imaging, de-burring machine includes ECU, feeding unit, video unit and air balance cabinet, wherein feeding unit includes centrifugal fan, video unit includes first group of lighting source, first group of background light source and second group of lighting source, second group of background light source of different-time exposure, and light source uses alternative light source；Impurity-removing method is to use different-time exposure after material is accelerated into certain speed, and IMAQ is carried out using alternative light source.Beneficial effects of the present invention are by being symmetrical arranged light source and line scan line camera, two groups of line scan cameras are controlled to be operated in different-time exposure state, effectively prevent the interference of upper and lower light source, effectively prevent the one of which light source light pollution and then influence image image quality of another set light source on its image in imaging process so that the image quality of two line scan cameras is more reliable.
Description
Technical field
It is especially a kind of to be based on different-time exposure and more light the present invention relates to industrial production line removal of impurities detection occluding technique field
Compose the de-burring machine and impurity-removing method of imaging.
Background technology
In existing leaf tobacco production line, there are various debris, compared with Traditional Man is screened, with the on-line checking of image mode
Equipment, effectively solves the foreign matter in production line, greatly improves the degree of purity of material.In actual use, material
Than relatively thin, multiple sets of light sources layout structure, there is light leakage phenomenon, have a strong impact on the image quality of material, influence is produced on rejecting.Separately
Outward, many lighting layout's structures, because the transparent glass of equipment is not 100% printing opacity, there is reflective phenomenon in its surface, so as to be formed
Floating light interference, image quality declines.Image imaging uses RGB visible light wave ranges, its colouring information that certain limitation is distributed with.
The content of the invention
The technical problem to be solved in the present invention is：There is provided that a kind of image quality is reliable and stable, meet frivolous object in it is different
De-burring machine and impurity-removing method that analyte detection needs.
In order to solve the above-mentioned technical problem, the de-burring machine of different-time exposure of the invention and multispectral imaging, including automatically controlled list
Unit, feeding unit, video unit and air balance cabinet, the ECU control the operation of whole unit；The feeding unit
Including feeding conveyor and centrifugal fan, one end of the feeding conveyor conveyer belt is connected with charging aperture, the other end with go out
Material mouth is connected；The output end of the centrifugal fan is arranged at charging aperture, centrifugal fan output air-flow supplies with
The conveyer belt of high speed is moved together, and flat throwing flies out in detection window position, into air balance cabinet；
The video unit is by the image detection window both sides along discharge outlet successively symmetrically arranged two panels transparent glass
And first group of lighting source and second group of lighting source, first group of background light source and second group of background light source, one group of light source
Controller and second group of light source controller, first group of line scan camera and second group of line scan camera, first group of image pick-up card
Constituted with second group of image pick-up card；
Described first group of light-source controller controls, first group of lighting source and first group of background light source point in the way of constant current
It is bright, while exporting synchronous triggering signal to the group of line scan camera and the group of image pick-up card, its collection image is controlled, most
After close first group of lighting source and first group of background light source；Described second group of light-source controller controls, second group of lighting source and
Second group of background light source is lighted in the way of constant current, while exporting synchronous triggering signal to second group of line scan camera and second group
Image pick-up card, controls its collection image, finally closes second group of lighting source and second group of background light source；First group of light
Source controller and second group of light source controller take turns to operate, and control two groups of light sources and camera crossover exposure to be imaged respectively；
The air balance cabinet is used for the separation of air-flow and material, is controlled by valve positioner and air-operated solenoid valve；It is described
First image pick-up card and second group of image pick-up card are collected to the image for gathering and detect identification, and export foreign body eliminating
Information gives the valve positioner, controls the air-powered electromagnetic valve events, rejects foreign matter.
The operation principle of preceding solution is as follows：
The conveyer belt of the conveyer system works in certain linear velocity, material（Such as tobacco leaf）Entered by charging aperture and conveyed
Band, is accelerated by the high-speed conveyer belt of feeding conveyor to it, while the air-flow supplies produced by centrifugal fan
Moved together with high-speed conveyer belt and without rollover phenomenon, the linear velocity of conveyer belt is together accelerated to high-speed conveyer belt, accelerated
Material afterwards flies out from the flat throwing of discharging opening, is detected by video unit during by detection window.
When material is in image detection window motion process, system high-speed is imaged and detects to it.
Detection mode is as follows：By first group of light-source controller controls, first group of lighting source and first group of background light source, with
The mode of constant current is lighted and is exposed, while exporting synchronous triggering signal to first group of line scan camera and first group of IMAQ
Card, after controlling its collection image, finally closes first group of lighting source and first group of background light source；
Second group of lighting source and second group of background light source are controlled by second group of lighting controller, is lighted in the way of constant current
It is exposed, while exporting synchronous triggering signal to second group of line scan camera and second group of image pick-up card, controls it to gather
After image, second group of lighting source and second group of background light source are finally closed；
First group of light source controller and second group of light source controller take turns to operate, control respectively two groups of light sources and
Camera crossover exposure is imaged, and makes exposure and IMAQ continuous.
Material carries out air-flow and feed separation by entering air balance cabinet after detection window, and material enters next life
Produce operation；Identification is collected and detects to collection image by first group of image pick-up card and second group of image pick-up card, and
Foreign body eliminating information is exported to valve positioner, valve positioner control air-powered electromagnetic valve events reject foreign matter.
Further, it is raising detection range, first group of lighting source, second group of lighting source, first group of background
Light source and second group of background light source be comprising visible light wave range, infrared band, ultraviolet band LED light source.
Further, to improve detection identification range, the image information of more materials is obtained, first group of line scans phase
Machine and second group of line scan camera include 1~4 camera, and the imaging band of each camera includes visible light wave range, infrared
Wave band and ultraviolet band.
Further, to improve the detection quality to material, described image detection window both sides are along the average throwing of material water
Both sides up and down or material vertical drop the left and right sides.
Further, to cause two groups of first scanning camera image quality more stable, first group of light source controller and institute
It is 5mA-1A to state the driving current of second group of light-source controller controls lighting source and background light source, and frequency of exposure is 200Hz-
100KHz, exposure dutycycle is 5-100%；First group of line scan camera and second group of time for exposure of line scan camera are 5
The microsecond of microsecond -2500.
Further, first group of light source controller and second group of light-source controller controls lighting source and the back of the body
The driving current of scape light source is 600mA, and frequency of exposure is 8KHz, and exposure dutycycle is 50%；First group of line scan camera and
Second group of time for exposure of line scan camera is 62.5 microseconds.
The impurity-removing method of a kind of different-time exposure and multispectral imaging, comprises the following steps：
（1）Material is sent into charging aperture, it is accelerated by the high-speed conveyer belt of feeding conveyor, while by centrifugation
The air-flow supplies that ventilation blower is produced are moved and without rollover phenomenon together with high-speed conveyer belt；
（2）Material after acceleration flies out from the flat throwing of discharging opening, is detected as follows by video unit during by detection window：
By first group of light-source controller controls, first group of lighting source and first group of background light source, lighted in the way of constant current
It is exposed, while exporting synchronous triggering signal to first group of line scan camera and first group of image pick-up card, controls it to gather
After image, first group of lighting source and first group of background light source are finally closed；
Second group of lighting source and second group of background light source are controlled by second group of lighting controller, is lighted in the way of constant current
It is exposed, while exporting synchronous triggering signal to second group of line scan camera and second group of image pick-up card, controls it to gather
After image, second group of lighting source and second group of background light source are finally closed；
First group of light source controller and second group of light source controller take turns to operate, control respectively two groups of light sources and
Camera crossover exposure is imaged, and makes exposure and IMAQ continuous；
（3）Material carries out air-flow and feed separation by entering air balance cabinet after detection window, and material enters next
Production process；Identification is collected and detects to collection image by first group of image pick-up card and second group of image pick-up card,
And foreign body eliminating information is exported to valve positioner, valve positioner control air-powered electromagnetic valve events reject foreign matter.
Further, step（1）In 5m/s is accelerated to material.
Further, step（2）In first group of light source controller and second group of light-source controller controls lighting source
Driving current with background light source is 5mA-1A, and frequency of exposure is 200Hz-100KHz, and exposure dutycycle is 5-100%；Every group of line
The time for exposure of scanning camera is the microsecond of 5 microsecond -2500.
Further, step（2）In first group of light source controller and second group of light-source controller controls illumination light
The driving current of source and background light source is 600mA, and frequency of exposure is 8KHz, and exposure dutycycle is 50%；First group of line scanning
Camera and second group of time for exposure of line scan camera are 62.5 microseconds.
Beneficial effects of the present invention are：By being symmetrical arranged light source and line scan line camera, two groups of line scan cameras are controlled
Different-time exposure state is operated in, the interference of upper and lower light source is effectively prevent, one of which light source is effectively prevent in imaging process
The light pollution and then influence image image quality of image of the middle another set light source on it so that two imagings of line scan camera
Quality is more reliable；In addition, illumination and background light source use infrared band and visible light wave range mixing LED light source at present, and adopt
Multispectral image camera is used, the material image of visible light wave range and infrared band can be collected, its detection identification range is significantly
Lifting, solves the image characteristics extraction of difficult debris.In multispectral image forming job state, more materials can be obtained
Image information, by image pick-up card to multispectral image be identified treatment, bigger performance space is lifted with this.
Brief description of the drawings
Fig. 1 is shown as the structural representation of the de-burring machine of a kind of different-time exposure of the invention and multispectral imaging.
Specific embodiment：
The present invention is further described with reference to the accompanying drawings and detailed description.
Shown in Fig. 1 when exposure and multispectral imaging de-burring machine, including ECU 1, feeding unit, video unit 4
With air balance cabinet 5, the ECU 1 controls the operation of whole unit；The feeding unit include feeding conveyor 3 and from
Heart ventilation blower 15, one end of the conveyer belt of the feeding conveyor 3 is connected with charging aperture 2, and the other end is connected with discharging opening；It is described from
The output end of heart ventilation blower 15 is arranged at charging aperture 2, the conveying of the air-flow supplies and high speed of the output of centrifugal fan 15
Band is moved together, and flat throwing flies out in detection window position, into air balance cabinet 5；
The video unit 4 is right successively along the both sides up and down of the average throwing of material water by the image detection window along discharge outlet
Claim the two panels transparent glass 9 and first group of lighting source 7-1 and second group of lighting source 7-2, first group of background light source that set
8-1 and second group of background light source 8-2, first group of light source controller 10-1 and second group of light source controller 10-2, first group of line are swept
Retouch camera 6-1 and second group of line scan camera 6-2, first group of image pick-up card 11-1 and second group of image pick-up card 11-2 group
Into；
First group of light source controller 10-1 controls first group of lighting source 7-1 and first group of background light source 8-1 with perseverance
The mode of stream is lighted, while exporting synchronous triggering signal to the first line scan camera 6-1 and the first image pick-up card 11-1, control
Its collection image, finally closes first group of lighting source 7-1 and first group of background light source 8-1；Second group of light source controller
10-2 controls second group of lighting source 7-2 and second group of background light source 8-2 is lighted in the way of constant current, while exporting synchronous triggering
Signal gives second group of line scan camera 6-2 and second group of image pick-up card 11-2, controls its collection image, finally closes second group
Lighting source 7-2 and second group of background light source 8-2；First group of light source controller 10-1 and second group of light source controller
10-2 takes turns to operate, and controls two groups of light sources and camera crossover exposure to be imaged respectively；
The air balance cabinet 5 is used for the separation of air-flow and material, is controlled by valve positioner 16 and air-operated solenoid valve 12；
Described first image capture card 11-1 and second group of image pick-up card 11-2 is collected and detects identification to the image for gathering, and
Foreign body eliminating information is exported to the valve positioner 16, controls the air-operated solenoid valve 12 to act, reject foreign matter.
First group of lighting source 7-1, second group of lighting source 7-2, first group of background light source 8-1 and second group of background
Light source 8-2 be comprising visible light wave range, infrared band, ultraviolet band LED light source；First group of line scan camera 6-1 and
Second group of line scan camera 6-2 includes 1~4 camera, and the imaging band of each camera includes visible light wave range, infrared waves
Section and ultraviolet band；First group of light source controller 10-1 and second group of light source controller 10-2 control lighting source and
The driving current of background light source is 600mA, and frequency of exposure is 8KHz, and exposure dutycycle is 50%；First group of line scan camera
6-1 and second group of time for exposure of line scan camera 6-2 is 62.5 microseconds.
The operation principle of previous embodiment is：
In system operation, the high-speed conveyer belt of the feeding conveyor 3 works in the linear velocity of 5m/s, material 14
（Such as tobacco leaf）Conveyer belt is entered by charging aperture 2, it is accelerated by the high-speed conveyer belt of feeding conveyor 3, at the same by from
The air-flow supplies that heart ventilation blower 15 is produced are moved and without rollover phenomenon together with high-speed conveyer belt, with high-speed conveyer belt one
With the linear velocity for accelerating to conveyer belt, the material after acceleration flies out from the flat throwing of discharging opening, by video unit 4 during by detection window
Detected.
When material is in image detection window motion process, system high-speed is imaged and detects to it.
Detection mode is as follows：First group of lighting source 7-1 and first group of background are controlled by first group of light source controller 10-1
Light source 8-1, is lighted in the way of constant current and is exposed, at the same export synchronous triggering signal to first group of line scan camera 6-1 and
First group of image pick-up card 11-1, after controlling its collection image, finally closes first group of lighting source 7-1 and first group of bias light
Source 8-1；
Second group of lighting source 7-2 and second group of background light source 8-2 is controlled by second group of lighting controller 10-2, with constant current
Mode light and be exposed, while exporting synchronous triggering signal to second group of line scan camera 6-2 and second group of IMAQ
Card 11-2, after controlling its collection image, finally closes second group of lighting source 7-2 and second group of background light source 8-2；
First group of light source controller 10-1 and second group of light source controller 10-2 are taken turns to operate, and two are controlled respectively
Group light source and the imaging of camera crossover exposure, make exposure and IMAQ continuous.
In the process of running, first group of light source controller 10-1 and second group of light source controller 10-2 is using high speed constant flow electricity
Road, it is synchronous to drive first group of lighting source 7-1, second group of lighting source 7-2, first group of background light source 8-1 and second group of background
Light source 8-2, be capable of achieving LED crossing current drive, its peak drive current, frequency of exposure, exposure dutycycle it is comprehensive adjustable, wherein driving
Streaming current 600mA, frequency of exposure 8KHz, expose dutycycle 50%, drive the microsecond of response time 3, first group of line scan camera 6-1
It is 62.5 microseconds with second group of time for exposure of line scan camera 6-2.First group of light source controller 10-1 and second group of light source control
Device 10-2 synchronism outputs exposure signal processed gives first group of image pick-up card 11-1, second group of image pick-up card 11-2, first group of line
Scanning camera 6-1 and second group of line scan camera 6-2, control camera synchronously exposes, and gathers the image of material.Wherein, two groups of light
Source different-time exposure, two groups of cameras synchronously intersect imaging, effectively avoid material ratio it is relatively thin in the case of, light source printing opacity causes
Cross-color phenomenon.And between reducing two groups of light sources, because floating light caused by glass reflecting so that imaging is not sharp keen enough, influence
Detection identification.
Material carries out air-flow and feed separation by entering air balance cabinet after detection window, and material enters next life
Produce operation；Collection image is collected and detected by first group of image pick-up card 11-1 and second group of image pick-up card 11-2
Identification, and foreign body eliminating information is exported to valve positioner 16, the control air-operated solenoid valve 12 of valve positioner 16 is acted, rejected different
Thing.
Although as described above, having been represented with reference to specific preferred embodiment and having described the present invention, it must not be explained
It is to the limitation of itself of the invention.The claims in the present invention explain spirit and scope under the premise of, can to its in form and
Various changes can be made in details.
Claims (7)
1. the de-burring machine of a kind of different-time exposure and multispectral imaging, including ECU (1), feeding unit, video unit (4) and
Air balance cabinet (5), it is characterised in that：The ECU (1) controls the operation of whole unit；The feeding unit include into
Material conveyer (3) and centrifugal fan (15), one end of feeding conveyor (3) conveyer belt are connected with charging aperture (2), another
End is connected with discharging opening；The output end of the centrifugal fan (15) is arranged on charging aperture (2) place, centrifugal fan (15) output
Air-flow supplies moved together with the conveyer belt of high speed, and flat throwing flies out in detection window position, into air balance cabinet
(5)；
The video unit (4) is by the detection window both sides along discharge outlet successively symmetrically arranged two panels transparent glass (9),
One group of lighting source (7-1) and second group of lighting source (7-2), first group of background light source (8-1) and second group of background light source (8-
2), first group of light source controller (10-1) and second group of light source controller (10-2), first group of line scan camera (6-1) and second
Group line scan camera (6-2), first group of image pick-up card (11-1) and second group of image pick-up card (11-2) composition；Described first
Group lighting source (7-1), second group of lighting source (7-2), first group of background light source (8-1) and second group of background light source (8-2)
Be comprising visible light wave range, infrared band, ultraviolet band LED light source；First group of line scan camera (6-1) and second group
Line scan camera (6-2) includes 1~4 camera, the imaging band of each camera include visible light wave range, infrared band and
Ultraviolet band；
First group of light source controller (10-1) control first group of lighting source (7-1) and first group of background light source (8-1) with
The mode of constant current is lighted, while exporting synchronous triggering signal to first group of line scan camera (6-1) and first group of image pick-up card
(11-1), controls its collection image, finally closes first group of lighting source (7-1) and first group of background light source (8-1)；Described
Two groups of light source controller (10-2) second group of lighting sources (7-2) of control and second group of background light source (8-2) are in the way of constant current
Light, while exporting synchronous triggering signal to second group of line scan camera (6-2) and second group of image pick-up card (11-2), control
Its collection image, finally closes second group of lighting source (7-2) and second group of background light source (8-2)；The one group of light source control
Device (10-1) processed and second group of light source controller (10-2) are taken turns to operate, and two groups of light sources and camera crossover exposure are controlled respectively
Imaging；First group of light source controller (10-1) and second group of light source controller (10-2) control lighting source and background
The driving current of light source is 5mA-1A, and frequency of exposure is 200Hz-100KHz, and exposure dutycycle is 5-100%；Described first group
Line scan camera (6-1) and second group of time for exposure of line scan camera (6-2) are the microsecond of 5 microsecond -2500；
The air balance cabinet (5) is controlled for the separation of air-flow and material by valve positioner (16) and air-operated solenoid valve (12)
System；First group of image pick-up card (11-1) and second group of image pick-up card (11-2) are collected and examine to the image for gathering
Identification is surveyed, and exports foreign body eliminating information to the valve positioner (16), control air-operated solenoid valve (12) action, rejected
Foreign matter.
2. the de-burring machine of different-time exposure according to claim 1 and multispectral imaging, it is characterised in that：The detection window
Both sides are the left and right sides of both sides up and down along the average throwing of material water or material vertical drop.
3. the de-burring machine of different-time exposure according to claim 1 and multispectral imaging, it is characterised in that：First group of light
Source controller (10-1) and second group of light source controller (10-2) control the driving current of lighting source and background light source to be
600mA, frequency of exposure is 8KHz, and exposure dutycycle is 50%；First group of line scan camera (6-1) and second group of line scanning
The time for exposure of camera (6-2) is 62.5 microseconds.
4. a kind of impurity-removing method based on different-time exposure described in claim 1 and multispectral imaging de-burring machine, it is characterised in that bag
Include following steps：
(1) material is sent into charging aperture, it is accelerated by the high-speed conveyer belt of feeding conveyor, while being divulged information by being centrifuged
The air-flow supplies that machine is produced are moved and without rollover phenomenon together with high-speed conveyer belt；
(2) material after accelerating flies out from the flat throwing of discharging opening, is detected as follows by video unit during by detection window：
By first group of light-source controller controls, first group of lighting source and first group of background light source, being lighted in the way of constant current is carried out
Exposure, while exporting synchronous triggering signal to first group of line scan camera and first group of image pick-up card, controls its collection image
Afterwards, first group of lighting source and first group of background light source are finally closed；
Second group of lighting source and second group of background light source are controlled by second group of lighting controller, being lighted in the way of constant current is carried out
Exposure, while exporting synchronous triggering signal to second group of line scan camera and second group of image pick-up card, controls its collection image
Afterwards, second group of lighting source and second group of background light source are finally closed；
First group of light source controller and second group of light source controller are taken turns to operate, and two groups of light sources and camera are controlled respectively
Crossover exposure is imaged, and makes exposure and IMAQ continuous；
(3) material carries out air-flow and feed separation by entering air balance cabinet after detection window, and material enters next production
Operation；Collection image is collected by first group of image pick-up card and second group of image pick-up card and detects identification, and it is defeated
Go out foreign body eliminating information to valve positioner, valve positioner control air-powered electromagnetic valve events reject foreign matter.
5. impurity-removing method according to claim 4, it is characterised in that：Step accelerates to 5m/s in (1) to material.
6. impurity-removing method according to claim 4, it is characterised in that：First group of light source controller (10-1) and described
It is 5mA-1A that second group of light source controller (10-2) controls the driving current of lighting source and background light source, and frequency of exposure is
200Hz-100KHz, exposure dutycycle is 5-100%；Every group of time for exposure of line scan camera is the microsecond of 5 microsecond -2500.
7. impurity-removing method according to claim 4, it is characterised in that：First group of light source controller (10-1) and described
It is 600mA that second group of light source controller (10-2) controls the driving current of lighting source and background light source, and frequency of exposure is 8KHz,
Exposure dutycycle is 50%；The time for exposure of first group of line scan camera (6-1) and second group of line scan camera (6-2) is
62.5 microseconds.
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| CN102809272A (en) * | 2011-06-03 | 2012-12-05 | 天津市隆泰冷暖设备制造有限公司 | Automatic drying production line of condenser |
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| CN103211292B (en) * | 2013-03-20 | 2015-07-01 | 湖南中烟工业有限责任公司 | Equipment and method for sectional fine sorting of tobacco sheets |
| CN203519514U (en) * | 2013-09-29 | 2014-04-02 | 上海方成视觉设备有限公司 | Double-face tablet appearance detection mechanism |
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2015
- 2015-04-29 CN CN201510213214.1A patent/CN104841646B/en active Active
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