CN204616176U - The LED illumination System of LED light source colour temperature built-in stabilizers and automatic stabilisation colour temperature - Google Patents
The LED illumination System of LED light source colour temperature built-in stabilizers and automatic stabilisation colour temperature Download PDFInfo
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- CN204616176U CN204616176U CN201520338088.8U CN201520338088U CN204616176U CN 204616176 U CN204616176 U CN 204616176U CN 201520338088 U CN201520338088 U CN 201520338088U CN 204616176 U CN204616176 U CN 204616176U
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Abstract
The utility model relates to the LED illumination System of a kind of LED light source colour temperature built-in stabilizers and automatic stabilisation colour temperature.LED light source colour temperature built-in stabilizers comprise color sensor, microcontroller and constant-flow driver; Color sensor is used for the current colour temperature detecting LED light source in real time; Described microcontroller is connected with color sensor, in order to receive the current colour temperature data of LED light source, and produces colour temperature conditioning signal accordingly; Constant-flow driver is connected with microcontroller, in order to regulate the colour temperature of LED light source according to colour temperature conditioning signal; Color sensor is connected with microcontroller by I2C bus; Color sensor is provided with IR anti-dazzling screen, for filtering far red light.The LED illumination System of automatic stabilisation colour temperature comprises above-mentioned LED light source colour temperature built-in stabilizers, also comprises LED light source; LED light source is connected with the constant-flow driver of LED light source colour temperature built-in stabilizers.The utility model environmentally can change the colour temperature of automatic stabilisation LED light source, is adapted at requiring higher place application to environment colour temperature.
Description
Technical field
The utility model relates to technical field of LED illumination, particularly relates to the LED illumination System of a kind of LED light source colour temperature built-in stabilizers and automatic stabilisation colour temperature.
Background technology
The colour temperature of light source refer to the color of source emissioning light and black matrix at a certain temperature radiant light form and aspect simultaneously, the temperature (color temperature) of black matrix.In daily life, the mankind have adapted to the dynamic change of sunlight, and such as sunrise and acronical colour temperature are approximately 2000K, and the colour temperature of sunrise after one hour is approximately 3500K, and midday sun light color temperature is approximately 5300K.Research shows, the light source color temperature of lighting environment all plays a role to body heat regulation when human circadian and variation of ambient temperature and heat balance, and colour temperature also can have influence on the perception of people to visual environment.Because current people are to the high request of quality of lighting, the light fixture of adjustable color temperature has been applied in daily life.LED colour temperature regulation technology conventional at present has following three kinds:
(1) produce different-colour white light technology by red, green, blue, white light four look LED mixed light, also claim RGBW technology;
(2) adopt multi-chip integrated white light LED, realize adjustable color by the selection of chip portfolio and switching;
(3) adjustable color is realized, i.e. changes in temperature white light LEDs colour mixture technology by low color temperature white light LED and high color temperature LED mixed light and brightness regulation.
While color-temperature regulating, the increase of drive current can make the power of LED change and then cause the change of junction temperature of LED, show in output spectrum it is then that the peak wavelength of LED is moved, namely the chromaticity coordinate of light source can change, in addition, adjustment process also can be subject to the factor impacts such as phosphor technologies, packaging technology, temperature and external environment change.No matter which kind of colour temperature regulation technology above-mentioned, under the condition meeting color rendering index requirement, the desired value that colour temperature regulates often all can fluctuate, and does not reach some and requires that higher place is to the requirement of colour temperature Stability and veracity to environment colour temperature.
Utility model content
Technical problem to be solved in the utility model is, provides the LED illumination System of a kind of LED light source colour temperature built-in stabilizers and automatic stabilisation colour temperature, and the colour temperature of LED light source can be made automatically to keep stable.The utility model is achieved in that
A kind of LED light source colour temperature built-in stabilizers, comprise color sensor, microcontroller and constant-flow driver;
Described color sensor is used for the current colour temperature detecting LED light source in real time;
Described microcontroller is connected with described color sensor, in order to receive the current colour temperature data of described LED light source, and produces colour temperature conditioning signal accordingly;
Described constant-flow driver is connected with described microcontroller, in order to regulate the colour temperature of described LED light source according to described colour temperature conditioning signal;
Described color sensor is connected with described microcontroller by I2C bus;
Described color sensor is provided with IR anti-dazzling screen, for filtering far red light.
Further, described colour temperature conditioning signal is pwm control signal.
Further, described microcontroller is 51 kernel microcontrollers.
Further, described color sensor comprises 8 × 2 photodiode arrays; 16 photodiodes of described photodiode array are divided into four classes, be respectively: 4 photodiodes with red filter, 4 photodiodes with green filter, 4 photodiodes with blue filter, remain the photodiode that 4 do not have filter.
Further, in described 8 × 2 photodiode arrays, four class photodiodes are alternately arranged, and photo-voltaic diode is distributed in described photodiode array.
Further, described color sensor also comprises analog to digital converter and monolithic cmos integrated circuit; Described photodiode array is connected with described monolithic cmos integrated circuit by described analog to digital converter.
A LED illumination System for automatic stabilisation colour temperature, comprises LED light source colour temperature built-in stabilizers as above, also comprises LED light source; Described LED light source is connected with the constant-flow driver of described LED light source colour temperature built-in stabilizers.
Further, described LED light source colour temperature built-in stabilizers are integrated in described LED light source.
Further, described LED light source comprises red-light LED luminescence unit, green LED unit, blue-ray LED luminescence unit and white light LEDs luminescence unit; Described constant-flow driver has four road constant current outputs, and described four road constant current outputs are connected with described red-light LED luminescence unit, green LED unit, blue-ray LED luminescence unit and white light LEDs luminescence unit respectively.
Further, also comprise remote computer, described microcontroller is connected by Zigbee with described remote computer.
Compared with prior art, the utility model utilizes color sensor, microcontroller and constant-flow driver and LED light source to form close loop control circuit, environmentally can change the colour temperature of automatic stabilisation LED light source, not by the impact of the uncontrollable factors such as ambient temperature, LED light source phosphor technologies, packaging technology, be particluarly suitable for requiring higher place application to environment colour temperature.
Accompanying drawing explanation
Fig. 1: the LED illumination System composition schematic diagram of the utility model automatic stabilisation colour temperature;
Fig. 2: the further composition schematic diagram of described LED illumination System.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.
Shown in composition graphs 1 and Fig. 2, the LED illumination System of the utility model automatic stabilisation colour temperature comprises LED light source colour temperature built-in stabilizers and LED light source 4.LED light source colour temperature built-in stabilizers comprise color sensor 1, microcontroller 2 and constant-flow driver 3.
Color sensor 1 is for detecting the current colour temperature of LED light source 4 in real time; Microcontroller 2 is connected with color sensor 1, in order to receive the current colour temperature data of LED light source 4, and produces colour temperature conditioning signal accordingly; Constant-flow driver 3 is connected with microcontroller 2, in order to regulate the colour temperature of LED light source 4 according to colour temperature conditioning signal.
Color sensor 1 comprises 8 × 2 photodiode arrays, analog to digital converter and a monolithic cmos integrated circuit, and photodiode array is connected with monolithic cmos integrated circuit by analog to digital converter, can measure the colourity of surround lighting exactly.Color sensor 1 is connected with microcontroller 2 by CMOS integrated circuit, and for exporting chroma data, and this CMOS integrated circuit provides the data of 16 to export.Color sensor 1 can gather respectively to the luminance signal of the R of surround lighting (red), G (green), B (indigo plant), W (in vain) four-way light, obtain R, G, B tristimulus values, and be converted into the color temperature value of current environment light.Photodiode array arrangement schematic diagram has been shown in Fig. 2, (civilian with horizontal stripe at 16 photodiodes 101 altogether of this photodiode array, nicking, slanted bar line and the little square frame not with provision) be divided into four classes, be respectively: 4 (the little square frames with nicking) have the photodiode 101 of red filter, 4 (the little square frames with horizontal stripe) have the photodiode 101 of green filter, 4 (the little square frames with slanted bar line) have the photodiode 101 of blue filter, and 4 (the little square frame not with provision) does not have the photodiode 101 of filter.Owing to there is the filter of particular color or not there is filter, therefore inhomogeneity photodiode 101 by the color of light be different, thus can the brightness of different color channels in ambient light.As seen from Figure 2, this four classes photodiode 101 is alternately arranged, thus makes photo-voltaic diode 101 disperse distribution in the array, can reduce the inhomogeneities of incident light radiation to greatest extent, thus improves detection accuracy.4 photodiodes 101 of each class are connected in parallel, and are uniformly distributed in an array, can eliminate the site error of color.This color sensor 1 is provided with IR anti-dazzling screen, and IR anti-dazzling screen can filtering far red light, makes testing result more accurate.Color sensor 1 inside is provided with four 16 parallel high-precision adcs, these four analog to digital converters connect the output of a class photodiode separately, to gather the output current of respective classes photodiode, and be converted into digital quantity, to obtain brightness value or the intensity level of corresponding color light.By I2C bus communication between color sensor 1 and microcontroller 2, microcontroller 2 to control color sensor 1 by I2C bus and obtains the value of 4 analog to digital converter channel registers of color sensor 1.This color sensor 1 is also provided with INT pin and SYNC pin, INT pin produces interrupt signal in time, improves the real-time that data transmit, and SYNC pin is used for synchronized sampling, when flicker occurs LED light source 4, the requirement of stability and the accuracy sampled also can be ensured.
Microcontroller 2 adopts the reinforced 51 kernel microcontrollers of integrated ZigBee wireless communication function, and needed for it, outward element is less.This microcontroller 2 inside is integrated with a timer, and this timer is sixteen bit programmable timer, has five and compares and catch passage.This timer design has pwm signal to produce pattern, for generation of pwm control signal.Color sensor 1 sends to the current colour temperature data of the LED light source 4 of microcontroller 2 to be digital quantities, the color temperature value of these colour temperature data and internal preset can compare by microcontroller 2 in real time, when comparative result is different, the output that corresponding pwm control signal controls constant-flow driver 3 can be produced according to the difference between these colour temperature data and default color temperature value, to regulate the colour temperature of LED light source 4, make the colour temperature of LED light source 4 consistent with the color temperature value of microcontroller 2 internal preset.
Constant-flow driver 3 with PWM dimming interface, in order to receive the pwm control signal of microcontroller 2.This pwm control signal as colour temperature conditioning signal, in order to regulate the colour temperature of LED light source 4.
LED light source 4 is connected with the constant-flow driver 3 of LED light source colour temperature built-in stabilizers.LED light source colour temperature built-in stabilizers are integrated in LED light source 4, to improve the integrated level of LED illumination System, certainly, also can be connected with LED light source 4 removably.LED light source 4 comprises red-light LED luminescence unit 401, green LED unit 402, blue-ray LED luminescence unit 403 and white light LEDs luminescence unit 404, can mix by regulating the brightness of each colour light emitting unit the luminescence producing different-colour.Now, for corresponding with the LED luminescence unit of each color, constant-flow driver 3 is provided with four road constant current outputs, is connected respectively with red-light LED luminescence unit 401, green LED unit 402, blue-ray LED luminescence unit 403 and white light LEDs luminescence unit 404.Microcontroller 2 produces the four road constant current outputs that four road pwm control signals regulate constant-flow driver 3 respectively, to regulate the brightness of each colour light emitting unit, thus realizes regulating the colour temperature of LED light source 4.
For realizing the visual control to colour temperature adjustment process, the LED illumination System of this automatic stabilisation colour temperature also can comprise a remote computer 5.Because microcontroller 2 is integrated with ZigBee wireless communication function, remote computer 5 is connected with microcontroller 2 by Zigbee.The current colour temperature data of LED light source 4 are sent to remote computer 5 by Zigbee and show in real time by microcontroller 2, make user grasp the current colour temperature of LED light source 4 in real time.User also can be arranged by the colour temperature of remote computer 5 pairs of LED light sources 4, is namely write in microcontroller 2 by required color temperature value by remote computer 5.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (10)
1. LED light source colour temperature built-in stabilizers, is characterized in that, comprise color sensor, microcontroller and constant-flow driver;
Described color sensor is used for the current colour temperature detecting LED light source in real time;
Described microcontroller is connected with described color sensor, in order to receive the current colour temperature data of described LED light source, and produces colour temperature conditioning signal accordingly;
Described constant-flow driver is connected with described microcontroller, in order to regulate the colour temperature of described LED light source according to described colour temperature conditioning signal;
Described color sensor is connected with described microcontroller by I2C bus;
Described color sensor is provided with IR anti-dazzling screen, for filtering far red light.
2. LED light source colour temperature built-in stabilizers as claimed in claim 1, it is characterized in that, described colour temperature conditioning signal is pwm control signal.
3. LED light source colour temperature built-in stabilizers as claimed in claim 1, it is characterized in that, described microcontroller is 51 kernel microcontrollers.
4. LED light source colour temperature built-in stabilizers as claimed in claim 1, it is characterized in that, described color sensor comprises 8 × 2 photodiode arrays; 16 photodiodes of described photodiode array are divided into four classes, be respectively: 4 photodiodes with red filter, 4 photodiodes with green filter, 4 photodiodes with blue filter, remain the photodiode that 4 do not have filter.
5. LED light source colour temperature built-in stabilizers as claimed in claim 4, it is characterized in that, in described 8 × 2 photodiode arrays, four class photodiodes are alternately arranged, and photo-voltaic diode is distributed in described photodiode array.
6. LED light source colour temperature built-in stabilizers as claimed in claim 4, it is characterized in that, described color sensor also comprises analog to digital converter and monolithic cmos integrated circuit; Described photodiode array is connected with described monolithic cmos integrated circuit by described analog to digital converter.
7. a LED illumination System for automatic stabilisation colour temperature, is characterized in that, comprises the LED light source colour temperature built-in stabilizers as described in a claim any in claim 1 to 6, also comprises LED light source; Described LED light source is connected with the constant-flow driver of described LED light source colour temperature built-in stabilizers.
8. the LED illumination System of automatic stabilisation colour temperature as claimed in claim 7, it is characterized in that, described LED light source colour temperature built-in stabilizers are integrated in described LED light source.
9. the LED illumination System of automatic stabilisation colour temperature as claimed in claim 7, it is characterized in that, described LED light source comprises red-light LED luminescence unit, green LED unit, blue-ray LED luminescence unit and white light LEDs luminescence unit; Described constant-flow driver has four road constant current outputs, and described four road constant current outputs are connected with described red-light LED luminescence unit, green LED unit, blue-ray LED luminescence unit and white light LEDs luminescence unit respectively.
10. the LED illumination System of automatic stabilisation colour temperature as claimed in claim 7, it is characterized in that, also comprise remote computer, described microcontroller is connected by Zigbee with described remote computer.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105392232A (en) * | 2015-12-14 | 2016-03-09 | 江苏林洋照明科技有限公司 | LED multi-channel color-mixed intelligent light bulb, intelligent illuminating system and multi-channel color-mixing method |
| CN105744675A (en) * | 2016-02-29 | 2016-07-06 | 深圳市优逸电子科技有限公司 | Lamp and circuit capable of automatic adjusting color temperature |
| CN107135571A (en) * | 2017-05-12 | 2017-09-05 | 浙江生辉照明有限公司 | Intelligent lamp |
| CN107580384A (en) * | 2016-07-05 | 2018-01-12 | 刘秉源 | A kind of personalized light fixture of adaptive environment |
| TWI612846B (en) * | 2015-11-20 | 2018-01-21 | Chung Ping Lai | Situational simulation lighting device |
| CN109215612A (en) * | 2017-06-30 | 2019-01-15 | 北京小米移动软件有限公司 | Adjusting method and device that screen is shown, electronic equipment, storage medium |
| CN109951922A (en) * | 2019-04-03 | 2019-06-28 | 深圳市南方海擎科技有限公司 | A kind of light source light spectrum self-correcting and self-test closed-loop control system and its control method |
| CN110017895A (en) * | 2019-03-26 | 2019-07-16 | 广州市轩士佳电子科技有限公司 | A kind of light source monitoring system |
| CN110602819A (en) * | 2019-08-09 | 2019-12-20 | 漳州立达信光电子科技有限公司 | Color temperature smoothing output system and controller |
| CN111741559A (en) * | 2020-08-27 | 2020-10-02 | 江西嘉捷鑫源科技有限公司 | Color temperature correction method, system, control terminal and computer readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI612846B (en) * | 2015-11-20 | 2018-01-21 | Chung Ping Lai | Situational simulation lighting device |
| CN105392232A (en) * | 2015-12-14 | 2016-03-09 | 江苏林洋照明科技有限公司 | LED multi-channel color-mixed intelligent light bulb, intelligent illuminating system and multi-channel color-mixing method |
| CN105744675A (en) * | 2016-02-29 | 2016-07-06 | 深圳市优逸电子科技有限公司 | Lamp and circuit capable of automatic adjusting color temperature |
| CN107580384A (en) * | 2016-07-05 | 2018-01-12 | 刘秉源 | A kind of personalized light fixture of adaptive environment |
| CN107135571A (en) * | 2017-05-12 | 2017-09-05 | 浙江生辉照明有限公司 | Intelligent lamp |
| WO2018206009A1 (en) * | 2017-05-12 | 2018-11-15 | Zhejiang Shenghui Lighting Co., Ltd. | Smart light bulb |
| CN109215612A (en) * | 2017-06-30 | 2019-01-15 | 北京小米移动软件有限公司 | Adjusting method and device that screen is shown, electronic equipment, storage medium |
| CN110017895A (en) * | 2019-03-26 | 2019-07-16 | 广州市轩士佳电子科技有限公司 | A kind of light source monitoring system |
| CN110017895B (en) * | 2019-03-26 | 2023-11-14 | 广州市轩士佳电子科技有限公司 | Light source monitoring system |
| CN109951922A (en) * | 2019-04-03 | 2019-06-28 | 深圳市南方海擎科技有限公司 | A kind of light source light spectrum self-correcting and self-test closed-loop control system and its control method |
| CN110602819A (en) * | 2019-08-09 | 2019-12-20 | 漳州立达信光电子科技有限公司 | Color temperature smoothing output system and controller |
| CN110602819B (en) * | 2019-08-09 | 2022-01-07 | 漳州立达信光电子科技有限公司 | Color temperature smoothing output system and controller |
| CN111741559A (en) * | 2020-08-27 | 2020-10-02 | 江西嘉捷鑫源科技有限公司 | Color temperature correction method, system, control terminal and computer readable storage medium |
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