CN204141476U - A kind of LED backlight device for beer bottle on-line monitoring - Google Patents
A kind of LED backlight device for beer bottle on-line monitoring Download PDFInfo
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- CN204141476U CN204141476U CN201420466658.7U CN201420466658U CN204141476U CN 204141476 U CN204141476 U CN 204141476U CN 201420466658 U CN201420466658 U CN 201420466658U CN 204141476 U CN204141476 U CN 204141476U
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Abstract
The utility model discloses a kind of LED backlight device for beer bottle on-line monitoring, it comprises LED circuit board, wherein, LED circuit board is evenly arranged multiple row LED lamp unit, LED in same row LED lamp unit is series connection, in LED circuit board, the LED lamp unit of odd column comprises multiple blue LED lamp and red LED lamp, and blue LED lamp and red LED lamp are for being alternately arranged; In LED circuit board, the LED lamp unit of even column comprises multiple red LED lamp and green light LED lamp, and red LED lamp and green light LED lamp are for being alternately arranged; LED circuit board front is provided with the light guide plate of optical thin film, the LED circuit board back side is provided with radiating bottom plate, radiating bottom plate has been evenly arranged multiple radiator fan, under the prerequisite ensureing light stability, improve light source effect, reduce the manufacturing cost of backlight.
Description
Technical field
The utility model relates to a kind of LED backlight device for beer bottle on-line monitoring.
Background technology
Machine vision replaces human eye measure and judge with machine exactly, by image device (i.e. image-pickup device, point CMOS and CCD two kinds) target will be ingested convert picture signal to, send special image processing system to, according to pixel distribution and the information such as brightness, color, be transformed into digitized signal; Picture system carries out various computing to extract clarification of objective to these signals, and then controls on-the-spot device action according to the result differentiated.Nowadays, machine vision has become a kind of indispensable, important technology in modern advanced manufacturing industry.LED light source also plays very important effect in beer bottle defects detection, source illumination module is as the light source of target object, have impact on brightness and colouring information that image device takes pictures to a great extent, the key component of machine vision applications, to a great extent can the directly quality of effect diagram picture and effect.The lighting source of current machine recognition mainly contains fluorescent lamp, Halogen lamp LED and light emitting diode, its performance parameter more as shown in table 1, brightness of fluorescent lamp and poor stability, and Halogen lamp LED is expensive, and service life is too short.
Table 1
| Cost | Brightness | Stability | Service life | Somewhat complex design | Temperature affects | |
| Fluorescent lamp | Low | Difference | Difference | Generally | Low | Generally |
| Halogen lamp LED+fibre-optic catheter | High | Good | Generally | Difference | Generally | Difference |
To sum up, prior art needs further improvement and develops.
Utility model content
In view of above-mentioned the deficiencies in the prior art, a kind of LED backlight device for beer bottle on-line monitoring that the utility model provides, under the prerequisite ensureing light stability, improves light source effect, reduces the manufacturing cost of backlight.
For solving the problems of the technologies described above, technical solutions of the utility model comprise:
A kind of LED backlight device for beer bottle on-line monitoring, it comprises LED circuit board, wherein, LED circuit board is evenly arranged multiple row LED lamp unit, LED in same row LED lamp unit is series connection, in LED circuit board, the LED lamp unit of odd column comprises multiple blue LED lamp and red LED lamp, and blue LED lamp and red LED lamp are for being alternately arranged; In LED circuit board, the LED lamp unit of even column comprises multiple red LED lamp and green light LED lamp, and red LED lamp and green light LED lamp are for being alternately arranged; LED circuit board front is provided with the light guide plate of optical thin film, and the LED circuit board back side is provided with radiating bottom plate, radiating bottom plate has been evenly arranged multiple radiator fan.
LED backlight device, wherein, often row LED lamp unit comprises six direct insertion LED, in LED circuit board odd column LED lamp unit in first LED be blue LED lamp, in LED circuit board even column LED lamp unit in first LED be red LED lamp; Every 16 row LED lamp unit form a luminescence unit, and the multiple luminescence units in LED circuit board are series connection, and the luminescence unit illuminated in combination of any number forms a plane LED light source.
LED backlight device, wherein, light guide plate comprises the guide-lighting base plate be made up of polymethyl methacrylate, and guide-lighting base surface is provided with reflectance coating on the side of LED circuit board, and guide-lighting base plate another side is provided with scattering film and brightness enhancement film.
LED backlight device, wherein, LED control panel is provided with between LED circuit board and radiating bottom plate, LED control panel comprises single-chip microcomputer, multiple temperature sensor, receiver, the digital control analog switch of ten Hexamermis spp, constant-flow driver, solid relay, sixteen bit analog-digital converter, sixteen bit latch, eight bit shift register and peripheral circuit thereof, each luminescence unit is all configured with three constant-flow drivers, each constant-flow driver is connected with a corresponding solid relay, constant-flow driver and solid relay form a driver element, each driver element is all connected with corresponding sixteen bit latch, sixteen bit latch is connected with single-chip microcomputer by eight corresponding bit shift register, each driver element is all connected with the corresponding digital control analog switch of ten Hexamermis spp, the digital control analog switch of ten Hexamermis spp is connected with single-chip microcomputer by corresponding sixteen bit analog-digital converter, multiple temperature sensor is arranged on radiating bottom plate, multiple temperature sensor and receiver communicate to connect, receiver is connected with single-chip microcomputer.
A kind of LED backlight device for beer bottle on-line monitoring that the utility model provides, LED backlight device of the present utility model can be connected with control system, the multiple purpose of light source can be realized according to the requirement of measured target, area that in backlight, LED lights, brightness, color can be regulated, under the prerequisite ensureing light stability, improve light source effect, reduce the manufacturing cost of backlight.
Accompanying drawing explanation
Fig. 1 is the structural representation of LED backlight device in the utility model;
Fig. 2 is the structural representation of LED lamp unit in the utility model;
Fig. 3 is the structural representation of LED control panel in the utility model.
Detailed description of the invention
The utility model provides a kind of LED backlight device for beer bottle on-line monitoring, for making the purpose of this utility model, technical scheme and effect clearly, clearly, further describes below to the utility model.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of LED backlight device for beer bottle on-line monitoring, as shown in Figure 1, it comprises LED circuit board 1, wherein, LED circuit board 1 is evenly arranged multiple row LED lamp unit 2, LED in same row LED lamp unit 2 is series connection, each row can regulate separately the connected mode of brightness, this is connected in series and regulates separately the connected mode of brightness to have very large advantage: be connected in series on the one hand, can by regulating the size of current flowing through LED particle, thus change the brightness of LED, convenient and swift.The connected mode of the independent adjustment brightness on the other hand after series connection, can make each road work independently, and has a LEDs to damage the LED that can not affect other roads and normally works, can not cause the phenomenon that light source large area cannot be lighted.In LED circuit board 1, the LED lamp unit 2 of odd column comprises multiple blue LED lamp 3 and red LED lamp 4, and blue LED lamp 3 and red LED lamp 4 are for being alternately arranged; In LED circuit board 1, the LED lamp unit 2 of even column comprises multiple red LED lamp 5 and green light LED lamp 6, and red LED lamp 5 and green light LED lamp 6 are for being alternately arranged; LED circuit board 1 front is provided with the light guide plate 7 of optical thin film, and LED circuit board 1 back side is provided with radiating bottom plate 8, radiating bottom plate 8 has been evenly arranged multiple radiator fan 9.
In another preferred embodiment of the present utility model, as shown in Figure 2, often row LED lamp unit 2 comprises six direct insertion LED, in LED circuit board 1 odd column LED lamp unit 2 in first LED be blue LED lamp 3, second LED is red LED lamp 4, is alternately arranged successively; In LED circuit board 1 even column LED lamp unit 2 in first LED be red LED lamp 5, second LED is green light LED lamp 6, is alternately arranged successively; Every 16 row LED lamp unit 2 form a luminescence unit 20, and the multiple luminescence units 20 in LED circuit board 1 are series connection.The backlight of luminescence unit 20 (require according to object to be detected production line and determine) composition one piece of plane of any number, the luminescence unit port of LED circuit board 1 is to the interface staying a positive pole after the LED parallel connection of often kind of color, be convenient to carry out unit spliced and be connected D.C. regulated power supply, this D.C. regulated power supply provides the adjustable voltage of 16V ~ 24V.As shown in Figure 3, LED regulates LED brightness by special drive circuit is often organized in each luminescence unit 20.The light source of red green blue tricolor is embodied a concentrated reflection of on one block of plate, luminescence unit 20 illuminated in combination that can obtain the light any number of any one color according to the ratio changing three-color light source forms a plane LED light source, can according to the volume size of detected product, the area of the whole backlight of any change, thus adapted to the requirement of various application occasions.This application of installation, in the on-line checkingi of beer bottle, therefore according to the requirement of its production line, selects the luminescence unit of more than five to be spliced into a monoblock backlight, to adapt to corresponding production line.
Further, light guide plate 7 comprises the guide-lighting base plate be made up of polymethyl methacrylate, guide-lighting base plate can adopt the technological means of guide-lighting acrylic board, and guide-lighting base plate 7 is provided with reflectance coating on the side of LED circuit board, and guide-lighting base plate 7 another side is provided with scattering film and brightness enhancement film.The distribution of only lambert body that LED sends, light intensity distributions is very uneven, if directly apply the light source as machine vision, so utilize CCD camera to photograph photo just there is any discrepancy with real target, cause accurately identifying.And the principle of guide-lighting base plate 7 is the interference utilizing the network point distribution at the bottom of guide-lighting acrylic board plate to destroy light, line source uniform conversion is become area source, guide the scattering direction of LED light, the light that LED is sent is more even, improve the service efficiency of light source luminescent, be convenient to CCD take pictures and identify, improve light source effect.
Follow further, as shown in Figures 1 and 3, LED control panel 19 is provided with between LED circuit board 1 and radiating bottom plate 8, LED control panel 9 comprises single-chip microcomputer 10, multiple temperature sensor 11, receiver 12, the digital control analog switch 13 of ten Hexamermis spp, constant-flow driver 14, solid relay 15, sixteen bit analog-digital converter 16, sixteen bit latch 17, eight bit shift register 18 and peripheral circuits thereof, each luminescence unit is all configured with three constant-flow drivers 14, each constant-flow driver 14 is connected with a corresponding solid relay 15, constant-flow driver 14 and solid relay 15 form a driver element, each driver element is all connected with corresponding sixteen bit latch 17, sixteen bit latch 17 is connected with single-chip microcomputer 10 by eight corresponding bit shift register 18, each driver element is all connected with the corresponding digital control analog switch 13 of ten Hexamermis spp, the digital control analog switch 13 of ten Hexamermis spp is connected with single-chip microcomputer 1 by corresponding sixteen bit analog-digital converter 16, multiple temperature sensor 11 is arranged on radiating bottom plate 8, multiple temperature sensor 11 communicates to connect with receiver 12, receiver 12 is connected with single-chip microcomputer 1.Certainly in order to better realize Automated condtrol, multiple element can also be arranged, do not repeat them here.
Can adopt the element of corresponding model as required about said elements, the element below in conjunction with concrete model carries out more detailed description.
Read the value of DS18B20 temperature sensor 11, and export caution signal when LED temperature is too high; Receive the signal from optoelectronic switch, the flicker of control LED, namely when having measured object through out-of-date, backlight just can be bright; The instruction that single-chip microcomputer 10 issues is received by RS-232 driver or MAX220CPE receiver 12; After the instruction of reception single-chip microcomputer 10 is arrived, by in the electric current code of sequencing write 7,4HC,595 eight bit shift register 18, after LCX16373 sixteen bit latch 17 latches, by the output current value regulating AN120 solid relay 15 to regulate DD312 constant-flow driver 14, area that LED in backlight lights, brightness, color are set.When the output current value of DD312 constant-flow driver 14 is zero, the area that namely in adjustable backlight, LED lights; When regulating the output current value of DD312 constant-flow driver 14, the brightness that namely in adjustable backlight, LED lights; The LED of three kinds of colors in backlight can regulate the area and brightness lighted simultaneously, can adapt to the demand of different colours.
When LED opens a way, the output current of DD312 constant-flow driver 14 is zero, and when LED short circuit, the output current of DD312 constant-flow driver 14 becomes large, so when LED open circuit/short trouble, the curent change in LED loop is very large.Implementation method is: when there being measured target before backlight, backlight is lighted, now the digital control analog switch 13 of channel C C4067 ten Hexamermis spp is successively after conducting, single-chip microcomputer 10 gathers the current value in 16 LED loops by AD7705 sixteen bit analog-digital converter 16, if have notable difference with the current value in LED loop when normally working, single-chip microcomputer 10 can export LED open circuit/short trouble and report to the police.When each backlight is lighted, can scan 16 paths of LEDs loops, when next backlight is lighted, can scan next and organize 16 paths of LEDs loops, whether cycle detection LED loop has fault successively.
Certainly; more than illustrate and be only preferred embodiment of the present utility model; the utility model is not limited to enumerate above-described embodiment; should be noted that; any those of ordinary skill in the art are under the instruction of this description; made all equivalently to substitute, obvious variant, within the essential scope all dropping on this description, protection of the present utility model ought to be subject to.
Claims (4)
1. the LED backlight device for beer bottle on-line monitoring, it comprises LED circuit board, it is characterized in that, LED circuit board is evenly arranged multiple row LED lamp unit, LED in same row LED lamp unit is series connection, in LED circuit board, the LED lamp unit of odd column comprises multiple blue LED lamp and red LED lamp, and blue LED lamp and red LED lamp are for being alternately arranged; In LED circuit board, the LED lamp unit of even column comprises multiple red LED lamp and green light LED lamp, and red LED lamp and green light LED lamp are for being alternately arranged; LED circuit board front is provided with the light guide plate of optical thin film, and the LED circuit board back side is provided with radiating bottom plate, radiating bottom plate has been evenly arranged multiple radiator fan.
2. LED backlight device according to claim 1, it is characterized in that, often row LED lamp unit comprises six direct insertion LED, in LED circuit board odd column LED lamp unit in first LED be blue LED lamp, in LED circuit board even column LED lamp unit in first LED be red LED lamp; Every 16 row LED lamp unit form a luminescence unit, and the multiple luminescence units in LED circuit board are series connection, and the luminescence unit illuminated in combination of any number forms a plane LED light source.
3. LED backlight device according to claim 1, it is characterized in that, light guide plate comprises the guide-lighting base plate be made up of polymethyl methacrylate, and guide-lighting base surface is provided with reflectance coating on the side of LED circuit board, and guide-lighting base plate another side is provided with scattering film and brightness enhancement film.
4. LED backlight device according to claim 2, it is characterized in that, LED control panel is provided with between LED circuit board and radiating bottom plate, LED control panel comprises single-chip microcomputer, multiple temperature sensor, receiver, the digital control analog switch of ten Hexamermis spp, constant-flow driver, solid relay, sixteen bit analog-digital converter, sixteen bit latch, eight bit shift register and peripheral circuit thereof, each luminescence unit is all configured with three constant-flow drivers, each constant-flow driver is connected with a corresponding solid relay, constant-flow driver and solid relay form a driver element, each driver element is all connected with corresponding sixteen bit latch, sixteen bit latch is connected with single-chip microcomputer by eight corresponding bit shift register, each driver element is all connected with the corresponding digital control analog switch of ten Hexamermis spp, the digital control analog switch of ten Hexamermis spp is connected with single-chip microcomputer by corresponding sixteen bit analog-digital converter, multiple temperature sensor is arranged on radiating bottom plate, multiple temperature sensor and receiver communicate to connect, receiver is connected with single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420466658.7U CN204141476U (en) | 2014-08-19 | 2014-08-19 | A kind of LED backlight device for beer bottle on-line monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420466658.7U CN204141476U (en) | 2014-08-19 | 2014-08-19 | A kind of LED backlight device for beer bottle on-line monitoring |
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| Publication Number | Publication Date |
|---|---|
| CN204141476U true CN204141476U (en) | 2015-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420466658.7U Expired - Fee Related CN204141476U (en) | 2014-08-19 | 2014-08-19 | A kind of LED backlight device for beer bottle on-line monitoring |
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| Country | Link |
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| CN (1) | CN204141476U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542944A (en) * | 2019-08-07 | 2019-12-06 | 罗志康 | Light guide plate with composite performance |
| CN112219059A (en) * | 2018-05-29 | 2021-01-12 | 昕诺飞控股有限公司 | Lighting module facilitating color mixing |
-
2014
- 2014-08-19 CN CN201420466658.7U patent/CN204141476U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112219059A (en) * | 2018-05-29 | 2021-01-12 | 昕诺飞控股有限公司 | Lighting module facilitating color mixing |
| CN110542944A (en) * | 2019-08-07 | 2019-12-06 | 罗志康 | Light guide plate with composite performance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20150819 |
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| EXPY | Termination of patent right or utility model |