CN209130608U - A kind of mixing LED light source system for impurities eliminating machine - Google Patents
A kind of mixing LED light source system for impurities eliminating machine Download PDFInfo
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- CN209130608U CN209130608U CN201822045984.1U CN201822045984U CN209130608U CN 209130608 U CN209130608 U CN 209130608U CN 201822045984 U CN201822045984 U CN 201822045984U CN 209130608 U CN209130608 U CN 209130608U
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Abstract
A kind of mixing LED light source system for impurities eliminating machine disclosed by the utility model, two groups of light source assemblies at left and right sides of the sense channel including impurities eliminating machine is arranged in；The light source assembly includes the heat radiation rack for offering light hole, the lighting source that heat radiation rack is equipped with background light source and is made of White LED light source and ultraviolet LED light source；Background light source is powered by modulation constant-current supply, and White LED light source and ultraviolet LED light source are powered by constant-current supply；Two groups of light source assemblies are arranged by mode symmetrical above and below.The utility model can adapt to the demand of different material color, different irradiation luminous intensities；Lighting source is mixed in a certain ratio into using White LED light source and ultraviolet LED light source, combines the needs of colored detection and Ultraluminescence detection；The mixing LED light source system not only simplifies the detection design of impurities eliminating machine, reduces the volume of detection unit, and reduces the usage quantity of high speed camera, reduces the cost of impurities eliminating machine.
Description
Technical field
The utility model belongs to textile detection equipment technical field, and in particular to a kind of mixing for impurities eliminating machine
LED light source system.
Background technique
Impurities eliminating machine is typically coupled in series in cotton spinning production line, is removed in real time to the various foreign fibers in cotton.
Different fibre machine interior design has one section of transparent glass pipeline as cotton detection zone, and different light is disposed in transparent glass two sides
Source system illuminates the raw cotton in channel.To realize the detection to all kinds of different fibres, impurities eliminating machine generally uses a variety of inspections
The combination of survey means carries out repeated detection to cotton to carry out different fine detection.
Currently, impurities eliminating machine industry mainly uses white visible light detection, ultraviolet light excitation fluorescence detection and polarization to adjust
This three categories detection technique of light detection processed, for the colored different different fine and all kinds of transparent or semitransparent plastics of white that are fine, having fluorescence
All kinds of different colours such as film, the different fibre of unlike material are detected.
Due to being used in mixed way for machine pick cotton and real estate cotton, the different fine type in raw cotton is also more and more, and different fibre machine needs same
Tri- kinds of Shi Caiyong or more of detection technique identifies to carry out different fibre, leads to the complex structural designs and volume of different fine machine testing unit
It is huge, Image Acquisition is carried out for different detection techniques using more cameras, causes equipment cost very high, is unfavorable for medium and small rule
The textile mills of mould use；And detection unit volume also results in greatly sealing difficulty, light source stability reduces.As country is to energy-saving ring
The promotion and guidance of guarantor, if designing mixing light source not only luminous efficiency is very low, light source is received a mandate short, waste fluorescent lamp using fluorescent tube
Special disposition is needed, requirement of the weaving user to different fine machine long-time stability is unable to satisfy, along with LED light source lighting engineering
It promotes, there is an urgent need to design a kind of not only stabilizing energy-saving, but also can reduce the light-source system of detection unit volume to be used for different fine machine
Detection.
Utility model content
The purpose of this utility model is to provide a kind of mixing LED light source system for impurities eliminating machine, solve existing
The compatibility issue of some impurities eliminating machine colour detection and ultraviolet detection, provided light-source system can reduce detection unit
Volume improves light source stability and service life.
The technical scheme adopted by the utility model is
A kind of mixing LED light source system for impurities eliminating machine, the sense channel including impurities eliminating machine is arranged in are left
Two groups of light source assemblies of right two sides；
The light source assembly includes the heat radiation rack for offering light hole, and heat radiation rack is equipped with background light source 1 and by white
The lighting source of LED light source and ultraviolet LED light source composition；Wherein, the two sides up and down of light hole are respectively equipped with White LED light source,
Ultraviolet LED light source is arranged between upside or the White LED light source and background light source of downside；Background light source is by modulation constant-current supply
Power supply, White LED light source and ultraviolet LED light source are powered by constant-current supply；
Two groups of light source assemblies are arranged by mode symmetrical above and below: the background light source and left side light source assembly of right side source component
Light hole alignment, the White LED light source and ultraviolet LED light source of left side light source assembly simultaneously to the measured object in sense channel into
Row illumination, the light of reflection are entered in colored high speed camera by the light hole of left side light source assembly.
The background light source includes the very color LED light source, grating being arranged in parallel between light-blocking support plate and there are gap
Plate and frosted diffuser plate, wherein original screen panel setting is between very color LED light source and frosted diffuser plate.
The very color LED light source is powered by PWM modulation constant-current supply, is sent out by R, G, B of the very color LED light source of its adjustment
The electric current of optical chip, the photochromic and brightness issued to very color LED light source are adjusted.
The heat radiation rack 10 is the heat radiation rack made of aluminum profile, and the back side is equipped with radiator fan 11；In illumination light
Source, background light source work normally 72 hours it is above after reach thermal equilibrium state so that whole mixing LED light source system stabilization is 40
DEG C~50 DEG C between；
Contact surface between background light source 1, White LED light source 7, ultraviolet LED light source 8 and heat radiation rack 10 is coated with thermally conductive
Glue.
The utility model has technical effect beneficial below compared with prior art:
Mixing LED light source system provided by the utility model for impurities eliminating machine is a kind of long-life, high stable
The property ground light-source system that effectively mixes with ultraviolet of visible light solves existing impurities eliminating machine colour foreign matter and ultraviolet different
The drawbacks of object needs different light sources to illuminate respectively；The utility model can adapt to different material color, difference irradiates luminous intensity
Demand；Lighting source is mixed in a certain ratio into using White LED light source and ultraviolet LED light source, combine colored detection and
The needs of Ultraluminescence detection；The light-source system will need four phases in the case where guaranteeing that detection technique is multiple functional originally
The operating compression of machine can be completed to two cameras, not only simplifies the detection of impurities eliminating machine, reduces the use of high speed camera
Quantity, the cost pressure for reducing foreign cotton fiber removing machine；It is again that different fibre machine reduces volume, reinforcement leakproofness provides condition,
Finally improve the market competitiveness of different fine machine；The space occupied of textile mills' installation equipment can be reduced, reduce installation difficulty.
The mixing light-source system of the utility model all uses LED as light source, has luminous efficiency height, service life
Feature long, light decay is small, light source integrally use aluminium heat sink section bar as installation substrate, not only can effectively solve dissipating for LED light source
Heat problem, the aging for slowing down LED；Further, using LED light source, there are the characteristics of light emitting angle, install additional in every side lamp frame surrounding
Frame blocks light, is converged, and the back side is combined to install using lighttight aluminum profile, so that source light is all concentrated
On irradiation measured object, dark space is formed at the back side of light source, so that camera only receives the light of measured object reflection, light source is eliminated and dissipates
It penetrates light and enters the possibility of camera, to solve light source to the light pollution of detection unit other parts, reduce the miscellaneous of camera image
Light interference.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the front schematic view of unilateral mixing LED light source.
Fig. 3 is modulation constant-current supply PWM modulation schematic diagram.
In figure, 1 is background light source, and 2 be very color LED light source, and 3 be original screen panel, and 4 be frosted diffuser plate, and 5 be light-blocking support
Plate, 6 be modulation constant-current supply, and 7 be White LED light source, and 8 be ultraviolet LED light source, and 9 be constant-current supply, and 10 be heat radiation rack, and 11 are
Radiator fan, 12 be light hole, and 13 be colored high speed camera, and 14 be sense channel.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description.
Referring to 1- Fig. 3, a kind of mixing LED light source system for impurities eliminating machine, including impurities eliminating machine is arranged in
Two groups of light source assemblies of 14 left and right sides of sense channel；
The light source assembly includes the heat radiation rack 10 for offering light hole 12, and heat radiation rack 10 is equipped with 1 He of background light source
The lighting source being made of White LED light source 7 and ultraviolet LED light source 8；Wherein, the two sides up and down of light hole 12 are respectively equipped with white
Color LED light source 7, ultraviolet LED light source 8 are arranged between upside or the White LED light source 7 and background light source 1 of downside；Background light source
1 is powered by modulation constant-current supply 6, and White LED light source 7 and ultraviolet LED light source 8 are powered by constant-current supply 9；
Two groups of light source assemblies are arranged by mode symmetrical above and below: the background light source 1 and left side light source group of right side source component
The light hole 12 of part is aligned, and the White LED light source 7 and ultraviolet LED light source 8 of left side light source assembly are simultaneously in sense channel 14
Measured object is illuminated, and the light of reflection is entered in colored high speed camera 13 by the light hole 12 of left side light source assembly.
Further, the background light source 1 includes the very coloured silk being arranged in parallel between light-blocking support plate 5 and there are gap
LED light source 2, original screen panel 3 and frosted diffuser plate 4, wherein the setting of original screen panel 3 is between very color LED light source 2 and frosted diffuser plate 4.
The original screen panel 3 is 3D original screen panel, and grid stroke is vertical with light source length direction；The frosted diffuser plate 4 is
It is formed in the two-sided use sand paper multiple rotary polishing frosted of transparent plexiglass plate.
Further, the very color LED light source 2 is powered by PWM modulation constant-current supply, by the very color LED light of its adjustment
The electric current of R, G, B luminescence chip in source 2, the photochromic and brightness issued to very color LED light source 2 are adjusted.
The PWM modulation constant-current supply is adjusted according to the color of the collected measured object of colored high speed camera 13 with brightness
It is whole:
PWM modulation constant-current supply adjusts the brightness of background light source by PWM modulation pulse width, so that background light source is in
Existing white and background luminance 30~50 gray values lower than Cotton Images brightness；
If colour cast occurs in background color, the electric current that the luminous wick of color is corresponded in very color LED light source is turned down or tuned up, is made
White is presented in cotton under background；
If background luminance exceeds or be not achieved contrast requirement, R, G, B hair in very color LED light source are turned or tuned up simultaneously down
The electric current of light wick meets the requirement of picture contrast.
The White LED light source and ultraviolet LED light source share the same detection unit: it is simultaneously in irradiating and detecting channel
Cotton, excitation fluorescent white foreign matter generates green or blue-fluorescence, and generated color fluorescence and cotton, colored foreign matter reflect
Light mix, into forming color image in colored high speed camera；Cotton forms white image, according in image
Heterochromia distinguishes cotton and all kinds of foreign matters.
Specifically, the lighting source is made of two White LED light sources 7 and a ultraviolet LED light source 8, wherein white
Color LED light source 7 is assembled using the White LED of 4000K~5000K colour temperature, and ultraviolet LED light source 8 uses 360nm~370nm
The ultraviolet LED of wavelength is assembled.
Further, two White LED light sources 7 be separately mounted to apart from 12 center of light hole up and down 15~
20 millimeters of two sides；Ultraviolet LED light source 8 is mounted between background light source and a White LED light source 7, and light adjacent with two sides
2~3 millimeters of source spacing；
The centre of the background light source 1 on the 12 face opposite of light hole.
The heat radiation rack 10 is the heat radiation rack made of aluminum profile, and the back side is equipped with radiator fan 11；In illumination light
Source, background light source work normally 72 hours it is above after reach thermal equilibrium state so that whole mixing LED light source system stabilization is 40
DEG C~50 DEG C between；
Contact surface between background light source 1, White LED light source 7, ultraviolet LED light source 8 and heat radiation rack 10 is coated with thermally conductive
Glue.
10 back side of heat radiation rack selects lighttight profile to be made, and 10 periphery of heat radiation rack add to light into
The frame that row is blocked or converged forms dark space at the back side of lighting source.
It is further described below with reference to Fig. 1, Fig. 2, Fig. 3 and embodiment.
Referring to Fig. 1, Fig. 2, the mixing LED light source system provided by the utility model for impurities eliminating machine, including be located at
The light-source system component of 14 two sides of sense channel of impurities eliminating machine, each component include 1, two white of a background light source
7, ultraviolet LED light sources 8 of LED light source, modulation constant-current supply 6 and constant-current supply 9, these components are installed in heat radiation rack
On (heat radiation rack made of aluminum profile) 10, contact surface smears heat-conducting silicone grease；Light hole 12, heat radiation rack are machined on heat radiation rack
The back side is equipped with radiator fan 11；Colored high speed camera 13 is installed on the two sides of mixing light-source system.
Background light source 1 is composed of very color LED light source 2, original screen panel 3, frosted diffuser plate 4 and light-blocking support plate 5.It is very color
LED light source 2 is powered by modulation constant-current supply 6 (PWM modulation constant-current supply).According to the collected quilt of colored high speed camera 13
The color and brightness for surveying object, since cotton is really white, collected Cotton Images are also presented white, and different fine image procossing
It is required that white and 30~50 lower than Cotton Images brightness (the preferably 40 or so) gray value of background luminance must be also presented in background
To guarantee contrast；If red partially occurs in background color, then the electric current of the luminous wick of R in very color LED light source is turned down, guaranteed
White is presented in background；If background luminance beyond contrast requirement, then turns the luminous wick of R, G, B in very color LED light source down simultaneously
Electric current, meet the requirement of picture contrast；These adjustment are carried out by modulation constant-current supply 6, and constant current source power supply
The stability and consistency of background light source are ensured.
White LED light source 7 is assembled using the White LED of 4000K colour temperature, and ultraviolet LED light source 8 uses 360nm wavelength
Ultraviolet LED be assembled, both light sources using 2:1 ratio mixing composition mixing light source.Two White LED light sources 7 are pacified
The two sides apart from 20 millimeters of light hole center, ultraviolet LED light source 8 up and down mounted in light hole 12 are mounted on background light source and one
Between White LED light source 7 and with this 3 millimeters of two adjacent light sources spacing.Both light sources all use constant-current supply 9 to be supplied
Electricity.
The mixed light source component of the left and right sides is when being assembled into light-source system, left and right sides installation symmetrical above and below, right group
The background light source 1 of part is aligned with the light hole 12 of left side component, and the White LED light source 7 and ultraviolet LED light source 8 of left side component are same
When the measured object in sense channel 14 is illuminated, the light of reflection enters colored high speed camera 13 by light hole 12
In.
Working principle and foreign matter cognitron of the utility model based on impurities eliminating machine visible detection and ultraviolet light detection
Reason, and fully consider design cost, it will be seen that light detection and ultraviolet light detection share the same detection unit；Using White LED
Lighting source of the light source as colored foreign matter, ultraviolet LED light source irradiation have fluorescent white foreign matter；Both light sources irradiate logical simultaneously
Cotton in road, excitation fluorescent white foreign matter generates green or blue-fluorescence while illuminating cotton and colored foreign matter, will be white
Color foreign matter also becomes colored foreign matter；These color fluorescences and the light of cotton, colored foreign matter reflection mix, into colour
Color image is formed in high speed camera.
In the image that colored high speed camera is formed, cotton forms white image, and the foreign matter of various colours forms itself
Color image；And white fluorescent foreign matter forms green or blue colour is different due to exciting the fluorescence of green or blue
Object image.Colored high speed camera output color image is to image processing model, and image processing model is according to the color difference in image
It is different, cotton and all kinds of foreign matters are distinguished, foreign matter identification is completed.
Mixing LED light source system is mainly realized in terms of the design of frontlighting light source and the design of background light source two.Just
Flat lighting source mainly from the stability of white and the characteristic of ultraviolet source, the proportion of white and ultraviolet source, two kinds of light sources with
And light source heat radiation is designed to comprehensively consider:
According to accurately identifying for colored foreign matter, characteristic of the integral illumination light source as far as possible close to morning daylight, i.e. colour temperature are needed
Between 5000K~6000K and brightness needs to meet the requirement that high speed camera 13 acquires image, because mixing light source is by white
LED light source 7 and ultraviolet LED light source 8 collectively constitute, and ultraviolet LED light source also has part blue light while issuing ultraviolet light
It issues；So White LED light source consider comprehensive utilization ultraviolet source blue light and integrated light source brightness, using 4000K~
The colour temperature of inclined warm colour between 5000K, and mixed according to the ratio of 2:1, so that finally the colour temperature of mixing light source and brightness are full
Foot requires；
Guarantee that the stability for mixing LED light source system must consider in terms of power supply plan and cooling measure two, root
According to the brightness and electric current of LED light source at positive exponential relationship, determine to power using constant-current source to light-source system, and LED light source
In the case where electric current is certain, luminous efficiency and temperature are in inverse relationship, therefore White LED light source 7 and ultraviolet LED light source 8 are complete
Portion is designed and is mounted on monolith heat radiation rack 10 using aluminium base, installs radiator fan 11 at the profile back side；Light-source system just
Reach thermal equilibrium state after often work 72 hours or more, so that whole mixing LED light source system is stablized between 40 DEG C~50 DEG C,
Guarantee that the work of integrated light source system within the temperature range of LED allows, guarantees system temperature in LED light source normal working temperature model
The centre enclosed.
Designing for background light source 1 is mainly carried out from the uniformity of light source, stability and to the adaptability of measured object.Background
As the standard basis of reference of image recognition, its uniformity and stability is most important, passes through the 3D of 40 lines of assembly in design
Original screen panel 3；Grid stroke is vertical with light source length direction, so that the point light source diffusion of LED becomes area source, then by transparent
Poly (methyl methacrylate) plate is two-sided using the polishing frosted of 400# sand paper multiple rotary, is processed into frosted diffuser plate 4 further such that bias light
LED diffusion in source is simultaneously soft, forms uniformity and very soft area source, using modulation constant-current supply 6 to background light source into
Row power supply.
It, can be according to the White LED light source 7 and ultraviolet LED light mixed on the left of sense channel 14 in LED light source referring to Fig. 3
Source 8 adjusts right side background by different PWM modulation pulse widths to the intensity of illumination after measured object raw cotton irradiation in channel
The brightness of light source；
Specifically, in the case where left side lighting source illumination is fixed, make by adjusting R, G, B gain of left camera
The RGB multi-point average value of object image must be tested 150 or so, if measured object R, G, B value inadequate 150, it is corresponding to tune up camera
R, the gain of G, B, otherwise turns camera gain down；No longer change yield value after the completion of camera gain adjustment, according to image comparison
Degree requires background value 110 ± 5, it is ensured that the contrast of image background and measured object holding 40 or so, if background is more than 110,
PWM modulation pulse width is then reduced, background light source brightness is reduced, so that background image reaches the 110 ± 5 of requirement, conversely, just increasing
Big PWM modulation pulse width (right side illuminates the same manner adjustment).
Due to measured object raw cotton place of production difference, there are color difference, some is partially yellow, some is partially white, front illuminated LED lamp bead
Colour temperature therefore it is required that background light source 1 allows for adjustment color, adapts to a variety of different raw cotton there is also a certain range of difference
With front illuminated light source difference, it is based on requirements above, background LED is used by the true color lamp pearl of RGB of the prosperous section's photoelectricity in Shenzhen, aluminum substrate
The very color LED light source 2 that printed board is assembled (for example is used by the constant-current source of PWM modulation function as power supply as light source
The LDD-1000H constant-current source that bright latitude power supply provides carries PWM modulation)；Back is adjusted according to the color of normal measured object is detected
Scape light source colour:
Measured object color is partially yellow if normal, then needs for background color to be also adjusted to partially yellow；The modulation increase of constant-current supply 6 R,
G luminescence chip corresponds to the pulse width of constant-current source, and the electric current for increasing R, G luminescence chip increases brightness, keeps B luminescence chip corresponding
The PWM modulation pulse width of constant-current source is constant, so that the electric current of B luminescence chip is constant, finally allows the background LED light source to issue inclined
The light of yellow, then by forming satisfactory background color after diffusion, light mixing；Last camera carries out certainly according to background color
Dynamic white balance, makes cotton that white be presented under background.
The mixing LED light source system of the utility model realizes mixed between colored detection and ultraviolet detection difference light source
It closes, so that needing to carry out point different detection units to measured object to detect twice originally, single is detected in the same detection unit
It achieves that, provides precondition for design simplicity and diminution volume, the reinforcement leakproofness of impurities eliminating machine, and will be original
It needs the collecting work of 4 high speed cameras to be reduced to 2 high speed cameras to replace completely, design cost is greatly saved.
Claims (9)
1. a kind of mixing LED light source system for impurities eliminating machine, which is characterized in that the inspection including impurities eliminating machine is arranged in
Survey two groups of light source assemblies at left and right sides of channel (14)；
The light source assembly includes the heat radiation rack (10) for offering light hole (12), and heat radiation rack (10) is equipped with background light source
(1) and by White LED light source (7) and ultraviolet LED light source (8) lighting source formed；Wherein, the two sides up and down of light hole (12)
It is respectively equipped with White LED light source (7), the White LED light source (7) and bias light of upside or downside is arranged in ultraviolet LED light source (8)
Between source (1)；Background light source (1) is powered by modulation constant-current supply (6), White LED light source (7) and ultraviolet LED light source (8) by
Constant-current supply (9) power supply；
Two groups of light source assemblies are arranged by mode symmetrical above and below: the background light source (1) and left side light source assembly of right side source component
Light hole (12) alignment, the White LED light source (7) and ultraviolet LED light source (8) of left side light source assembly while to sense channel
(14) measured object in is illuminated, and the light of reflection enters colored high speed phase by the light hole (12) of left side light source assembly
In machine (13).
2. being used for the mixing LED light source system of impurities eliminating machine as described in claim 1, which is characterized in that the bias light
Source (1) includes very color LED light source (2), original screen panel (3) and the mill being arranged in parallel between light-blocking support plate (5) and there are gap
Sand diffuser plate (4), wherein original screen panel (3) setting is between very color LED light source (2) and frosted diffuser plate (4).
3. being used for the mixing LED light source system of impurities eliminating machine as claimed in claim 2, which is characterized in that the grating
Plate (3) is the 3D original screen panel for assembling 40 lines, and grid stroke is vertical with light source length direction；The frosted diffuser plate (4) is saturating
Bright poly (methyl methacrylate) plate is two-sided to be formed using the polishing frosted of sand paper multiple rotary.
4. being used for the mixing LED light source system of impurities eliminating machine as claimed in claim 2, which is characterized in that described is very color
LED light source (2) is powered by PWM modulation constant-current supply, by the electricity of R, G, B luminescence chip of the very color LED light source (2) of its adjustment
Stream, the photochromic and brightness issued to very color LED light source (2) are adjusted.
5. being used for the mixing LED light source system of impurities eliminating machine as described in claim 1, which is characterized in that the illumination
Light source is made of two White LED light sources (7) and a ultraviolet LED light source (8), and wherein White LED light source (7) uses 4000K
The White LED of~5000K colour temperature is assembled, and ultraviolet LED light source (8) is assembled using the ultraviolet LED of 360nm~370nm wavelength
It forms.
6. the mixing LED light source system as claimed in claim 1 or 5 for impurities eliminating machine, which is characterized in that described two
White LED light source (7) is separately mounted to apart from 15~20 millimeters of the two sides up and down at light hole (12) center；Ultraviolet LED light
Source (8) is mounted between background light source and a White LED light source (7), and with 2~3 millimeters of two sides adjacent light source spacing.
7. the mixing LED light source system as claimed in claim 1 or 5 for impurities eliminating machine, which is characterized in that described is logical
The centre of the background light source (1) on unthreaded hole (12) face opposite.
8. being used for the mixing LED light source system of impurities eliminating machine as described in claim 1, which is characterized in that the heat dissipation
Frame (10) is the heat radiation rack made of aluminum profile, and the back side is equipped with radiator fan (11)；It is normal in lighting source, background light source
Reach thermal equilibrium state after work 72 hours or more, so that whole mixing LED light source system is stablized between 40 DEG C~50 DEG C；
Contact surface between background light source (1), White LED light source (7), ultraviolet LED light source (8) and heat radiation rack (10), which is coated with, leads
Hot glue.
9. the mixing LED light source system as claimed in claim 1 or 8 for impurities eliminating machine, which is characterized in that described dissipates
Hot frame (10) back side selects lighttight profile to be made, and adds on heat radiation rack (10) periphery and blocked or converged to light
Frame, lighting source the back side formed dark space.
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| CN115467052A (en) * | 2022-10-28 | 2022-12-13 | 武汉智目智能技术合伙企业(有限合伙) | Equipment capable of removing foreign fibers for multiple times and using method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115467052A (en) * | 2022-10-28 | 2022-12-13 | 武汉智目智能技术合伙企业(有限合伙) | Equipment capable of removing foreign fibers for multiple times and using method |
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