CN102348315A - Light-emitting diode (LED) background light of material sorting equipment with adjustable color and brightness - Google Patents
Light-emitting diode (LED) background light of material sorting equipment with adjustable color and brightness Download PDFInfo
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- CN102348315A CN102348315A CN2011102230589A CN201110223058A CN102348315A CN 102348315 A CN102348315 A CN 102348315A CN 2011102230589 A CN2011102230589 A CN 2011102230589A CN 201110223058 A CN201110223058 A CN 201110223058A CN 102348315 A CN102348315 A CN 102348315A
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Abstract
The invention discloses a light-emitting diode (LED) background light of material sorting equipment with adjustable color and brightness, comprising an LED lamp strip, an LED driving module, a pulse width modulation (PWM) signal generation unit and a direct current power supply; the LED lamp strip comprises a red LED lamp band, a green LED lamp band and a blue LED lamp band; the red LED lamp band comprises a plurality of red LED lamp cores which are serially connected; the green LED lamp band comprises a plurality of green LED lamp cores which are serially connected; the blue LED lamp band comprises a plurality of blue LED lamp cores which are serially connected; the LED driving module comprises three output ends and four input ends; the red LED lamp band, the green LED lamp band and the blue LED lamp band are respectively connected with the three output ends of the LED driving module; the three input ends of the LED driving module are connected with the PWM signal generation unit; and the other input end of the LED driving module is connected with the output end of the direct current power supply. According to the invention, the red LED lamp band, the green LED lamp band and the blue LED lamp band form the single colorful light-emitting LED lamp strip according to a three-primary-color theory, the light-emitting intensity of the LED lamp bands is adjusted by modulating the power supply current of an LED through a PWM signal, so that the background light emits all different colors, the structure is simple and compact, and the adjustment to the background color and the brightness is convenient.
Description
[technical field]
The present invention relates to the background light of material screening installation, relate in particular to the bright LED background light of the adjustable tone of a kind of material screening installation.
[background technology]
The operation principle of material screening installation: selected thing gets into machine from the hopper at top, through the vibration of vibrator assembly, gets into the material hopper; Sorted materials glides along hopper; Quicken to fall to getting into the observation district in the separation chamber, (or material entering belt transfer system, sorted materials is with conveyer belt accelerated motion; Finally leave the observation district that conveyer belt gets into separation chamber), and between transducer and background board, pass.Under the illumination of light source; According to the power of material reflection, transmission or scattered light, the color of material and the characteristics such as shape of material; Material is differentiated, made system produce the output signal and drive the material that electromagnetically operated valve work blows out needs rejecting, and it is blown to the waste chamber of receiving hopper; And good sorted materials continues to move in the receiving hopper finished product chamber, thereby reaches the purpose that sorts.
For obtaining best material separating effect; Sometimes need be as far as possible with the color of background board and brightness regulation to raw material in the color the same with bright degree (when utilizing color and brightness sorting) of non-defective unit, need contrast maximum (when utilizing shape to carry out sorting) be transferred in the color and the brightness of background and material sometimes as far as possible; Therefore, the debug results of background board is directly connected to the effect of material sorting.
The background system of tradition material screening installation is made up of lighting source and background board jointly; The brightness of the lighting source of current most of background systems (being background light) is constant nonadjustable under the normal voltage input; Can only obtain different background colours and different brightness through rotating background board, therefore needing repeatedly, debugging just can make the color of background board and brightness reach ideal effect.Because the rotation of background board relies on stepping motor to control, its velocity of rotation is slow, complex operation, and cause background board out of control because of the problem of software or hardware easily, produce phenomenons such as deflection, rotation, even the phenomenon that motor occurs burning.
[summary of the invention]
The technical problem that the present invention will solve provides a kind of adjustable color of material screening installation and the LED background light of brightness.
In order to solve the problems of the technologies described above; The technical scheme that the present invention adopts is; The bright LED background light of the adjustable tone of a kind of material screening installation; Comprise LED lamp bar, LED driver module, pwm signal generating means and DC power supply, LED lamp bar comprises red LED lamp band and green LED lamp band and blue led lamp band; The red LED lamp band is composed in series by a plurality of red LED wicks, and the green LED lamp band is composed in series by a plurality of green LED wicks, and blue led lamp band is composed in series by a plurality of blue led wicks; The LED driver module comprises 3 outputs and 4 inputs; Red LED lamp band, green LED lamp band, blue led lamp band are connected with 3 outputs of LED driver module respectively; 3 inputs of LED driver module are connected with the pwm signal generating means, and another input of LED driver module is connected with the output of DC power supply.
As preferably, LED lamp bar is made up of a red LED lamp band and green LED lamp band and blue led lamp band and LED driver module.
As preferably, the pwm signal generating means is the TMS320/F28016 digital signal controller.
As preferably, the LED driver module comprises the CL320 chip.
The invention has the beneficial effects as follows:
Press the single led lamp bar that the three primary colors principle constitutes colorful light-emitting with red LED lamp band and green LED lamp band and blue led lamp band; Supply current through pwm signal modulation LED is regulated the luminous intensity of LED wick; Can make background light send different all colours; Make background system simple and compact for structure, background color and brightness regulation are convenient.
[description of drawings]
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed explanation.
Fig. 1 is the block diagram of the bright LED background light of the adjustable tone of material screening installation of the present invention embodiment.
Among the figure, 1-LED lamp bar, 101-red LED lamp band, 102-green LED lamp band, 103-blue led lamp band.
[embodiment]
In Fig. 1, the bright LED background light of the adjustable tone of a kind of material screening installation is made up of LED lamp bar, LED driver module, pwm signal generating means and DC power supply.
Wherein, red LED lamp band 101 is composed in series by 12 red LED wicks, and green LED lamp band 102 is composed in series by 12 green LED wicks, and blue led lamp band 103 is composed in series by 12 blue led wicks.
The LED driver module is made up of CL320 chip and peripheral circuit.The LED driver module comprises 3 outputs and 4 inputs; Red LED lamp band, green LED lamp band, blue led lamp band are connected with 3 outputs of LED driver module respectively; 3 inputs of LED driver module are connected with the pwm signal generating means; 3 road pwm signals of pwm signal generating means output are modulated respectively 3 road output currents of LED driver module through 3 inputs of LED driver module respectively, drive red LED lamp band, green LED lamp band and blue led lamp band more respectively.Another input of LED driver module is connected with the output of DC power supply.That is to say that the luminous intensity of 3 LED lamp bands is to regulate and control separately through different pwm signals respectively.
In the present embodiment, the LED wick has adopted the packing forms of LED paster, and wherein each LED paster is packaged together by 3 photochromic monochromatic LED wicks of difference, and 3 monochromatic LED wicks are respectively red-light LED wick, green light LED wick and blue-ray LED wick.For ease of installation and maintenance, a LED driver module and the arrangement of 12 LEDs pasters are welded on formation lamp bar 1 on the lamp plate.When circuit connects; 12 LEDs pasters are arranged in strip; Red-light LED wick in every LEDs paster in one of them red-light LED wick and another LEDs paster is composed in series a red-light LED lamp band each other; The green light LED wick is composed in series a green light LED lamp band each other, and the blue-ray LED wick is composed in series a blue LED lamp band each other.So, the 12 LEDs pasters that are contained in the lamp bar have constituted red, green and blue 3 LED lamp bands.
The pwm signal generating means is the TMS320/F28016 digital signal controller.The control button of TMS320/F28016 digital signal controller is integrated in by touch-screen and constitutes in the control panel, can be through touching the Control Parameter of regulating relevant background system.
Operation principle:
Be installed in the luminous of three kinds of photochromic LED lamp bands of the trichromatic RGB of representative (promptly constituting the bright background light of adjustable tone) in the LED lamp bar or project on the white background plate, or transmit, constitute the bright background system of adjustable tone thus through the PMMA diffuser plate.
Background intensity (being intensity of light) or color that operating personnel select to want through touch-screen (are three kinds of photochromic intensity of red, green, blue; Mix the back and form various colors); Touch-screen sends signal and passes to the digital signal controller TMS320/F28016 on the control board; Digital signal controller sends the duty ratio that pwm signal changes the direct current (48V square-wave signal) that DC power supply sends, thereby regulates the brightness that the LED wick sends.The illumination of LED lamp bar or project on the background board of white or transmit through the PMMA diffuser plate; Make background board or diffuser plate reflect the color that LED lamp bar sends; Like this; Can realize different background colors through the relative intensity that the adjustment background light sends different colours light, so be suitable for choosing of nearly all material.
Claims (4)
1. the bright LED background light of the adjustable tone of material screening installation comprises LED lamp bar, LED driver module, pwm signal generating means and DC power supply, it is characterized in that, described LED lamp bar comprises red LED lamp band and green LED lamp band and blue led lamp band; Described red LED lamp band is composed in series by a plurality of red LED wicks, and the green LED lamp band is composed in series by a plurality of green LED wicks, and blue led lamp band is composed in series by a plurality of blue led wicks; Described LED driver module comprises 3 outputs and 4 inputs; Described red LED lamp band, green LED lamp band, blue led lamp band are connected with 3 outputs of LED driver module respectively; 3 inputs of LED driver module are connected with the pwm signal generating means, and another input of LED driver module is connected with the output of DC power supply.
2. the bright LED background light of the adjustable tone of material screening installation according to claim 1 is characterized in that, described LED lamp bar is made up of a red LED lamp band and green LED lamp band and blue led lamp band and LED driver module.
3. the bright LED background light of the adjustable tone of material screening installation according to claim 1 is characterized in that described pwm signal generating means is the TMS320/F28016 digital signal controller.
4. the bright LED background light of the adjustable tone of material screening installation according to claim 1 is characterized in that described LED driver module comprises the CL320 chip.
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| CN2011102230589A CN102348315A (en) | 2011-08-04 | 2011-08-04 | Light-emitting diode (LED) background light of material sorting equipment with adjustable color and brightness |
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| CN2011102230589A CN102348315A (en) | 2011-08-04 | 2011-08-04 | Light-emitting diode (LED) background light of material sorting equipment with adjustable color and brightness |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773221A (en) * | 2012-08-24 | 2012-11-14 | 安徽捷迅光电技术有限公司 | Method for synchronously performing positive sorting and negative sorting by color sorting machine |
| CN105032789A (en) * | 2015-08-17 | 2015-11-11 | 江苏瑞新科技股份有限公司 | Color difference sorting device for silicon battery pieces and sorting method of color difference sorting device |
| CN110230367A (en) * | 2019-07-05 | 2019-09-13 | 苏州金螳螂文化发展股份有限公司 | The discoloration plasterboard ceiling structure and control system and method for a kind of scale moulding |
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| CN101406885A (en) * | 2008-11-07 | 2009-04-15 | 浙江大学 | Multicolour LED vision image light source system for automatic grading of fruits |
| CN100591614C (en) * | 2006-07-25 | 2010-02-24 | 南京大学 | Method for preparing silicon nanostructure based on nonaqueous etching and wet corrosion technique |
| CN102095371A (en) * | 2010-11-25 | 2011-06-15 | 天津大学 | Industrial color vision detection device and method |
| CN201869410U (en) * | 2010-11-04 | 2011-06-15 | 深圳市健隆新光电技术有限公司 | LED constant-current driving module adopting packet power supply mode |
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2011
- 2011-08-04 CN CN2011102230589A patent/CN102348315A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100591614C (en) * | 2006-07-25 | 2010-02-24 | 南京大学 | Method for preparing silicon nanostructure based on nonaqueous etching and wet corrosion technique |
| CN101406885A (en) * | 2008-11-07 | 2009-04-15 | 浙江大学 | Multicolour LED vision image light source system for automatic grading of fruits |
| CN201869410U (en) * | 2010-11-04 | 2011-06-15 | 深圳市健隆新光电技术有限公司 | LED constant-current driving module adopting packet power supply mode |
| CN102095371A (en) * | 2010-11-25 | 2011-06-15 | 天津大学 | Industrial color vision detection device and method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773221A (en) * | 2012-08-24 | 2012-11-14 | 安徽捷迅光电技术有限公司 | Method for synchronously performing positive sorting and negative sorting by color sorting machine |
| CN105032789A (en) * | 2015-08-17 | 2015-11-11 | 江苏瑞新科技股份有限公司 | Color difference sorting device for silicon battery pieces and sorting method of color difference sorting device |
| CN105032789B (en) * | 2015-08-17 | 2018-06-26 | 江苏瑞新科技股份有限公司 | The aberration sorting equipment and its method for sorting of a kind of silicon cell |
| CN110230367A (en) * | 2019-07-05 | 2019-09-13 | 苏州金螳螂文化发展股份有限公司 | The discoloration plasterboard ceiling structure and control system and method for a kind of scale moulding |
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Address after: Zipeng industrial 231201 Anhui County of Feixi province gathered Fangxing Avenue and Forest Avenue intersection Applicant after: Hefei Taihe Photoelectric Technology Co., Ltd. Address before: Zipeng industrial 230000 Anhui County of Feixi province gathered Fangxing Avenue and Forest Avenue intersection Applicant before: Hefei Taihe OptoElectronic Technology Co., Ltd. |
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Address after: 230601 Anhui city of Hefei Province Economic and Technological Development Zone Peach Industrial Park Development Area Fangxing Avenue and Magnolia Avenue intersection Applicant after: Hefei Taihe Photoelectric Technology Co., Ltd. Address before: Zipeng industrial 231201 Anhui County of Feixi province gathered Fangxing Avenue and Forest Avenue intersection Applicant before: Hefei Taihe Photoelectric Technology Co., Ltd. |
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Application publication date: 20120208 |