CN102858056A - Brightness and color temperature controlling system for LED (light-emitting diode) lamp - Google Patents
Brightness and color temperature controlling system for LED (light-emitting diode) lamp Download PDFInfo
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- CN102858056A CN102858056A CN2012102553359A CN201210255335A CN102858056A CN 102858056 A CN102858056 A CN 102858056A CN 2012102553359 A CN2012102553359 A CN 2012102553359A CN 201210255335 A CN201210255335 A CN 201210255335A CN 102858056 A CN102858056 A CN 102858056A
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Abstract
The invention discloses a brightness and color temperature controlling system for an LED (light-emitting diode) lamp. The brightness and color temperature controlling system comprises an LED module, a control chip and at least one driving module, wherein the LED module includes a plurality of LED illuminating units, the output end of the control chip is connected with the input end of the driving module, and the output end of the driving module is connected with the plurality of LED illuminating units. According to the brightness and color temperature controlling system for the LED lamp, brightness and color temperature of the LED lamp can be controlled individually, and brightness of the LED lamp can be freely adjusted when a color temperature parameter is fixed, so that brightness of the LED lamp does not change when color temperature of the LED lamp is adjusted.
Description
Technical field
The invention belongs to LED lamp lighting field, relate in particular to the brightness of a kind of LED lamp and color temperature control system.
Background technology
Because incandescent lamp has the shortcomings such as energy consumption height, life-span be short, all there are the relevant policies of superseded incandescent lamp countries in the world, and the LED light fixture has the characteristics such as brightness height, safety, caloric value are low, and for this reason, the LED lamp is widely used in the lighting of routine.The glow color of daily LED lamp is mainly white, because white light is near daylight, but the LED lamp of the color of light of turning white is to send white light by the blue-light excited fluorescent material that the blue-light-emitting wafer sends again, because the characteristic of white LED lamp has determined brightness value and the color temperature value of its glow color, so the white light color of sending is partially blue, the color temperature value of general white light is more than 10000K, optimum color temperature value is 2000K ~ 6000K when as illumination, and because everyone sensation is different, so need to carry out to the LED lamp adjusting of colour temperature and brightness.
Find that according to the study lighting colour is also close with people's psychic relation, for example: low colour temperature: colour temperature is below 3300K, and the photochromic partially red warm sensation that gives sets off steady atmosphere; Middle colour temperature: colour temperature is at 3000 ~ 6000K, and this colour temperature makes blueness have refrigerant sense, gives frank sensation; High color temperature: colour temperature is more than 6000K, and is photochromic partially blue, gives chilly sensation.
China Patent Publication No.: CN1758821A, open day: on 04 12nd, 2006, disclose a kind of can brightness adjusting and the lighting decoration lamp of colour temperature, it comprises controller and by the controller output signal brightness adjusting and have the LED of at least one color of light of turning white and the fluorescent tube of the LED colour temperature of a jaundice color of light, described controller comprises power-switching circuit, the input unit of input color temperature value, according to the corresponding color temperature parameters value of color temperature value input unit input and export the control circuit of control signal in the PWM mode, the display unit that simultaneously color temperature value after the control circuit regulation and control is shown, numerical signal after the control circuit regulation and control is changed and is flowed to the drive circuit of fluorescent tube, described power-switching circuit comprises rectifying part and transformation part, its transformation part is carried the 12V alternating voltage to control circuit, and this invention is adopted with the numerical value form and inputted required color temperature value and make controller reach the change brightness of control fluorescent tube and color temperature value to controller.Yet this technology has the following disadvantages: the brightness regulation of lighting decoration lamp and colour temperature are regulated not independent, and brightness also can change when regulating colour temperature, can not guarantee that when brightness adjusting colour temperature is constant.
Summary of the invention
The present invention is in order to overcome the deficiencies in the prior art part, the brightness of a kind of LED lamp and color temperature control system are provided, it can be so that respectively independent control of the colour temperature of LED lamp and brightness, but the brightness fixing free adjustment LED lamp under the color temperature parameters adjusting guarantees that its brightness can not change when regulating the LED lamp color temperature.
To achieve these goals, the present invention is by the following technical solutions:
The brightness of a kind of LED lamp and color temperature control system, comprise a led module, described led module comprises a plurality of LED luminescence units, and described LED luminescence unit has respectively different glow colors, and the colour temperature of led module is formed by the glow color colour mixture of described LED luminescence unit;
One control chip is connected with driver module, in order to driver module is controlled, control chip receives external dimmer and toning signal, and the light modulation and the toning signal that receive deciphered and computing, export different driving signals to driver module, described control chip also produces pwm signal;
Driver module receives the driving signal from described control chip, so that the LED luminescence unit works under the current value of setting, thereby the luminous of a plurality of LED luminescence units can obtain different color temperature values after colour mixture; Described driver module receives the pwm signal that described control chip sends simultaneously, pwm signal control driver module, so that driver module is pressed certain duty ratio work, thus the brightness value behind the adjusting LED luminescence unit load mixed light.
Control chip among the present invention receives light modulation and toning signal, drive accordingly signal to driver module by output after decoding and the computing, driver module works in correspondingly under the current value size control LED luminescence unit under the effect of respective drive signal, thereby so that the luminous of a plurality of LED luminescence units can obtain different color temperature values after colour mixture; Simultaneously control chip produces pwm signal, and pwm signal control driver module is by certain duty ratio work, and when the duty ratio of pwm signal was higher, the brightness of LED luminescence unit was just brighter; When the duty ratio of pwm signal was hanged down, the brightness of LED luminescence unit was just darker, thereby regulates the brightness value behind each LED luminescence unit load mixed light.The present invention is when regulating the colour temperature of LED luminescence unit and brightness, colour temperature is regulated and brightness regulation adopts separate regulative mode, do not interfere with each other between the two, but can guarantee a fixedly free adjustment brightness and can colour temperature not being exerted an influence under the color temperature parameters condition, thereby convenient adjusting to LED luminescence unit colour temperature and brightness.
As preferably, described driver module number is identical with LED luminescence unit number, and driver module receives the pwm signal that described control chip sends, and controls simultaneously different driver modules, so that each driver module is by certain duty ratio work.In this preferred version, the driver module number is identical with LED luminescence unit number, each LED luminescence unit is controlled by a corresponding driver module, and driver module is in order to receiving the good pwm signal of driving signal from control chip, thereby controls respectively colour temperature and the brightness of LED luminescence unit.
As preferably, described driver module number is one, the size that driver module can be regulated different LED luminescence unit load currents simultaneously by multiplexer channel output.In this preferred version, driver module in the brightness of LED lamp and the color temperature control system only adopts one, driver module connects respectively different LED luminescence units by multiplexer channel output, it can regulate load current size and the brightness of different LED luminescence units simultaneously, thereby obtains colour temperature and brightness after required LED luminescence unit carries out the mixed light colour mixture.
As preferably, described LED luminescence unit is comprised of a white LED lamp and a monochromatic LED lamp, and a described monochromatic LED lamp is red, green or blue LED lamp.White LED lamp sends neutral white light, can carry out light filling to red, green or the blue mixed light of LED lamp, thereby increase substantially the brightness of light source.
As preferably, described LED luminescence unit is comprised of a white LED lamp and three three-primary color LED lamps, described three three-primary color LED lamps are respectively red, green and blue LED lamp.In this preferred version, the LED luminescence unit adopts a white LED lamp and three colors to be respectively red, green and blue LED lamp, therefore can by change redness, green and three color LED lamps of blueness passage and obtain color miscellaneous by the mutual stack between them.
As preferably, described driver module is located in the integrated circuit.
As preferably, described driver module is constant-current driven chip.
As preferably, described control chip is through the backward driver module output drive signal of regulation and control, and the color temperature value of driver module driving LED luminescence unit changes between 2200K ~ 6000K.Its optimum color temperature value is 2000K ~ 6000K when the LED luminescence unit is used as illumination, and therefore the colour temperature changing value with the LED luminescence unit is arranged between 2200K ~ 6000K, and is different according to everyone sensation, can carry out to the LED lamp adjusting of different-colour.
Compared with prior art, the present invention has following beneficial effect: this system configuration is simple, when the LED luminescence unit is carried out colour temperature and brightness regulation, can realize the independent regulation of colour temperature and brightness, but free adjustment brightness under a fixing color temperature parameters condition.
Description of drawings
Fig. 1 is a kind of functional-block diagram of the embodiment of the invention 1.
Fig. 2 is a kind of functional-block diagram of the embodiment of the invention 2.
Fig. 3 is the oscillogram of LED luminescence unit of the present invention.
Among the figure, 1-control chip, 2-driver module II, 3-LED luminescence unit II, 4-driver module I, 5-LED luminescence unit I, 6-driver module.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
Embodiment 1:
As shown in Figure 1 the brightness of a kind of LED lamp and color temperature control system, comprise a led module, described led module comprises LED luminescence unit I3 and LED luminescence unit II5, described LED luminescence unit I3 has respectively different glow colors with LED luminescence unit II5, and the colour temperature of led module is formed by the glow color colour mixture of described LED luminescence unit I3 and LED luminescence unit II5;
One control chip 1, the output of described control chip 1 is connected with the input of driver module II2 with driver module I4 respectively, control chip 1 can be controlled driver module I4 and driver module II2, control chip 1 receives external dimmer and toning signal, and the light modulation and the toning signal that receive deciphered and computing, export different driving signals to driver module I4 and driver module II2, described control chip 1 also produces pwm signal;
Driver module I4 and driver module II2, reception is from the driving signal of described control chip 1, so that LED luminescence unit I5 and LED luminescence unit II3 work in respectively under the current value of setting, LED luminescence unit I5 can obtain different color temperature values with the luminous of LED luminescence unit II3 after colour mixture; Described driver module I4 and driver module II2 receive the pwm signal that described control chip 1 sends simultaneously, pwm signal control driver module I4 and driver module II2, so that driver module I4 and driver module II2 press certain duty ratio work, thereby regulate the brightness value behind LED luminescence unit I5 and the LED luminescence unit II3 load mixed light.
LED luminescence unit I5 described in the present embodiment, LED luminescence unit II3 are respectively a white LED lamp and a monochromatic LED lamp forms, and a described monochromatic LED lamp is red, green or blue LED lamp.
Driver module I4 described in the present embodiment and driver module II2 are constant-current driven chip, and described driver module I4 and driver module II2 are arranged in the integrated circuit.
Control chip 1 in the present embodiment is backward respectively to driver module I4 and driver module II2 output drive signal through regulation and control, and the color temperature value of driver module I4, driver module II2 difference driving LED luminescence unit I5 and LED luminescence unit II3 changes between 2200K ~ 6000K.
The oscillogram of LED luminescence unit I5 and LED luminescence unit II3 as shown in Figure 3.I
LED1The work wave of LED luminescence unit I5, I
LED2The work wave of LED luminescence unit II3, I
LED1, I
LED2Synchronous with pwm signal, namely work under the same duty ratio condition, but I
LED1And I
LED2Amplitude controlled by driver module I4 and driver module II2.According to outside toning signal, after control chip 1 computing, give driver module I4 and driver module II2 control signal, set respectively LED luminescence unit I5 and LED luminescence unit II3 current amplitude, obtain a color temperature value of determining behind LED luminescence unit I5 and the LED luminescence unit II3 mixed light.Pwm signal is so that I simultaneously
LED1With I
LED2Under different amplitudes, by a duty ratio job, duty cycle range 0% to 100%, brightness range can from 0% to 100% variation, i.e. I like this
LED1And I
LED2Amplitude and duty ratio can free adjustment, thereby colour temperature and brightness are adjustable respectively.
Embodiment 2:
As shown in Figure 2 the brightness of a kind of LED lamp and color temperature control system, comprise a led module, described led module comprises LED luminescence unit I5 and LED luminescence unit II3, described LED luminescence unit I5 has respectively different glow colors with LED luminescence unit II3, and the colour temperature of led module is formed by the glow color colour mixture of described LED luminescence unit I5 and LED luminescence unit II3;
One control chip 1, be connected with driver module 6, in order to driver module 6 is controlled, control chip 1 receives external dimmer and toning signal, and the light modulation and the toning signal that receive deciphered and computing, export different driving signals to driver module 6, described control chip also produces pwm signal;
The luminescence unit of LED described in present embodiment I5, LED luminescence unit II3 are respectively a white LED lamp and a monochromatic LED lamp forms, and a described monochromatic LED lamp is red, green or blue LED lamp.
The oscillogram of LED luminescence unit I5 as shown in Figure 3 and LED luminescence unit II3.I
LED1The work wave of LED luminescence unit I5, I
LED2The work wave of LED luminescence unit II3, I
LED1, I
LED2Synchronous with pwm signal, namely work under the same duty ratio condition, but I
LED1And I
LED2Amplitude be subjected to driver module 6 control.According to outside toning signal, after control chip 1 computing, give driver module 6 control signals, set LED luminescence unit I5 and LED luminescence unit II3 current amplitude, obtain a color temperature value of determining behind LED luminescence unit I5 and the LED luminescence unit II3 mixed light.Pwm signal is so that I simultaneously
LED1With I
LED2Under different amplitudes, by a duty ratio job, duty cycle range 0% to 100%, brightness range can from 0% to 100% variation, i.e. I like this
LED1And I
LED2Amplitude and duty ratio can free adjustment, thereby colour temperature and brightness are adjustable respectively.
Preferably, the light modulation described in the present invention and toning signal can adopt remote control mode to receive, and also can adopt analog or digital current potential mode to receive.When light modulation and toning signal adopt remote control mode to receive, can adopt a remote controller LED luminescence unit to be carried out the adjusting of colour temperature and brightness; When light modulation and toning signal adopt analog or digital current potential mode to receive, can connect a controller by the input at control chip the LED luminescence unit is carried out the adjusting of colour temperature and brightness.
Preferably, driver module number described in the present invention and LED luminescence unit number be circumscribed not, described LED luminescence unit can be comprised of a white LED lamp and three three-primary color LED lamps, and described three three-primary color LED lamps are respectively redness, green and blue LED lamp.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet be not to limit the present invention, any those of ordinary skill in the art are not breaking away from the technical scheme situation of the present invention, all can utilize method and the technology contents of above-mentioned announcement that technical solution of the present invention is made many possible changes and decoration, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solution of the present invention, any modification, equivalent variations and modification of building peace that foundation technology of the present invention is made above embodiment is all in the scope of technical solution of the present invention protection.
Claims (8)
1. LED lamp brightness and color temperature control system is characterized in that:
Comprise a led module, described led module comprises a plurality of LED luminescence units, and described LED luminescence unit has respectively different glow colors, and the colour temperature of led module is formed by the glow color colour mixture of described LED luminescence unit;
One control chip is connected with driver module, in order to driver module is controlled, control chip receives external dimmer and toning signal, and the light modulation and the toning signal that receive deciphered and computing, export different driving signals to driver module, described control chip also produces pwm signal;
Driver module, described driver module number is at least one, receives the driving signal from described control chip, so that the LED luminescence unit works under the current value of setting, thereby the luminous of a plurality of LED luminescence units can obtain different color temperature values after colour mixture; Described driver module receives the pwm signal that described control chip sends simultaneously, pwm signal control driver module, so that driver module is pressed certain duty ratio work, thus the brightness value behind the adjusting LED luminescence unit load mixed light.
2. a kind of LED lamp according to claim 1 brightness and color temperature control system, it is characterized in that: described driver module number is identical with LED luminescence unit number, driver module receives the pwm signal that described control chip sends, control simultaneously different driver modules, so that each driver module is by certain duty ratio work.
3. a kind of LED lamp according to claim 1 brightness and color temperature control system, it is characterized in that: described driver module number is one, the size that driver module can be regulated different LED luminescence unit load currents simultaneously by multiplexer channel output.
4. a kind of LED lamp according to claim 1 brightness and color temperature control system, it is characterized in that: described LED luminescence unit is comprised of a white LED lamp and a monochromatic LED lamp, and a described monochromatic LED lamp is red, green or blue LED lamp.
5. a kind of LED lamp according to claim 1 brightness and color temperature control system, it is characterized in that: described LED luminescence unit is comprised of a white LED lamp and three three-primary color LED lamps, and described three three-primary color LED lamps are respectively redness, green and blue LED lamp.
6. a kind of LED lamp according to claim 1 brightness and color temperature control system, it is characterized in that: described driver module is constant-current driven chip.
7. according to claim 1 or 6 brightness of described a kind of LED lamp and color temperature control systems, it is characterized in that: described driver module is located in the integrated circuit.
8. according to claim 1 and 2 or 3 brightness of described a kind of LED lamp and color temperature control systems, it is characterized in that: described control chip is through the backward driver module output drive signal of regulation and control, and the color temperature value of driver module driving LED luminescence unit changes between 2200K ~ 6000K.
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| CN103826368A (en) * | 2014-02-27 | 2014-05-28 | 大峡谷光电科技（苏州）有限公司 | LED lighting lamp color temperature and brightness adjusting control method without mutual influence |
| CN104540288A (en) * | 2014-12-29 | 2015-04-22 | 立达信绿色照明股份有限公司 | LED driving device with self-checking function |
| CN105050252A (en) * | 2015-06-30 | 2015-11-11 | 广东欧珀移动通信有限公司 | Method and apparatus for controlling tri-color breathing light |
| CN105282942A (en) * | 2015-11-20 | 2016-01-27 | 普天智能照明研究院有限公司 | Adjusting method and adjusting device for LED light source |
| CN105430816A (en) * | 2014-09-15 | 2016-03-23 | 马士科技有限公司 | Light-emitting control device, light-emitting system using light-emitting control device, and control method of light-emitting system |
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| CN105430816A (en) * | 2014-09-15 | 2016-03-23 | 马士科技有限公司 | Light-emitting control device, light-emitting system using light-emitting control device, and control method of light-emitting system |
| CN104540288A (en) * | 2014-12-29 | 2015-04-22 | 立达信绿色照明股份有限公司 | LED driving device with self-checking function |
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| CN105050252A (en) * | 2015-06-30 | 2015-11-11 | 广东欧珀移动通信有限公司 | Method and apparatus for controlling tri-color breathing light |
| CN105282942B (en) * | 2015-11-20 | 2019-02-19 | 普天智能照明研究院有限公司 | Adjusting method and regulating device for LED light source |
| CN105282942A (en) * | 2015-11-20 | 2016-01-27 | 普天智能照明研究院有限公司 | Adjusting method and adjusting device for LED light source |
| CN105848386A (en) * | 2016-04-20 | 2016-08-10 | 深圳市火星物联科技有限公司 | Multipath time-sharing light mixing system |
| CN106255293A (en) * | 2016-09-20 | 2016-12-21 | 广州七喜电子科技有限公司 | LED lamplight controller and computer housing |
| CN107505697A (en) * | 2017-08-31 | 2017-12-22 | 宁波舜宇仪器有限公司 | Microscope illumination system |
| CN107643160A (en) * | 2017-09-20 | 2018-01-30 | 福建联迪商用设备有限公司 | A kind of method, terminal and system for simulating actual scanning environment |
| CN113748748A (en) * | 2019-04-25 | 2021-12-03 | 昕诺飞控股有限公司 | Controller for lighting system |
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| CN110113839A (en) * | 2019-05-14 | 2019-08-09 | 华南理工大学 | A kind of dimming device suitable for a kind of photochromic adjustable OLED |
| CN110161670A (en) * | 2019-07-05 | 2019-08-23 | 麦克奥迪实业集团有限公司 | A kind of microscope illumination system of adjustable color |
| CN112738962A (en) * | 2019-10-28 | 2021-04-30 | 松下知识产权经营株式会社 | Lighting system |
| CN112738962B (en) * | 2019-10-28 | 2024-04-05 | 松下知识产权经营株式会社 | Lighting system |
| CN111246617A (en) * | 2020-01-22 | 2020-06-05 | 北京梦想加信息技术有限公司 | LED controller and LED control method |
| CN111246617B (en) * | 2020-01-22 | 2022-03-01 | 北京梦想加信息技术有限公司 | LED controller and LED control method |
| CN117295206A (en) * | 2023-11-24 | 2023-12-26 | 杭州罗莱迪思科技股份有限公司 | Constant brightness constant power color mixing control method and lamp |
| CN117295206B (en) * | 2023-11-24 | 2024-04-12 | 杭州罗莱迪思科技股份有限公司 | Constant brightness constant power color mixing control method and lamp |
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Application publication date: 20130102 |