CN102316647A - LED lamp color temperature adjusting driver - Google Patents
LED lamp color temperature adjusting driver Download PDFInfo
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- CN102316647A CN102316647A CN201110272774A CN201110272774A CN102316647A CN 102316647 A CN102316647 A CN 102316647A CN 201110272774 A CN201110272774 A CN 201110272774A CN 201110272774 A CN201110272774 A CN 201110272774A CN 102316647 A CN102316647 A CN 102316647A
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- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The invention discloses a LED lamp color temperature adjusting driver. Through a time division multiplexing control module, light source module control signals, which correspond to high and low color temperatures, are segmented on a respect of time so that at any moment, no more than one signal is at a high level. A power output module outputs an output driving voltage or current so as to drive a corresponding light source module to illuminate. Electric energy provided by a power converter is successively distributed to different branches at different time periods so that a problem of power converter overload caused by peak power value superposition can be avoided. Therefore, power configuration of the power converter can be reduced to half of the power configuration produced through the prior art. Reduction of the power of the power converter means the reduction of a volume and weight so that costs of the LED lamp can be saved.
Description
Technical field
The invention belongs to LED lamp control technology field, more specifically, relate to a kind of LED light color temperature and regulate driver.
Background technology
The LED lamp owing to have long, advantages such as energy consumption is low, energy-conserving and environment-protective of life-span, just is being widely used in fields such as commerce, industry, road, advertising lamp box as a kind of new light sources of high benefit.
Along with the extensive use of LED lamp, people are also increasingly high to the requirement of LED lamp, formed the multiple control modes of regulating from single brightness regulation to colour temperature.In order not influence the colour temperature drift of LED, the LED lamp great majority of degree of lightening and toning temperature adopt PWM (Pulse Width Modulation, pulse width modulation) mode.
In order to keep the consistency of power; Mix colours warm LED lamp usually with the power of monochrome temperature light source module as LED lamp maximum power; When two kinds of color temperature light sources modules were simultaneously luminous, its maximum power was no more than monochromatic temperature light source module power, so two kinds of color temperature light sources modules are simultaneously luminous; When brightness is maximum, all with half-power work.
When adopting the PWM mode to mix colours temperature, all there is the problem of power peak stack in the warm LED lamp of toning now.For fear of power supply overload, the power supply changeover device of the warm LED lamp of mixing colours is that the gross power with whole light source modules is configured.But the actual power loss maximum of the warm LED lamp of mixing colours has only about 1/2nd of power supply changeover device power output, can cause the power waste of configuration like this, simultaneously, causes also that the power supply changeover device volume is big, weight is heavier, the defective that cost is higher relatively.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, provide a kind of power output LED light color temperature suitable of power supply changeover device that make to regulate driver with the warm LED lamp actual power loss maximum of toning.
For realizing above-mentioned purpose, LED light color temperature of the present invention is regulated driver, it is characterized in that, comprising:
One time-division multiplexing control module; The time division multiplexing control module has two registers and communication interface; Two registers are respectively applied for the turn-on time of the high colour temperature of storage, low color temperature light sources module, and communication interface is regulated control circuit with colour temperature and is connected, and receive from colour temperature and regulate the high colour temperature of control circuit, data turn-on time of low color temperature light sources module; Be used to regulate and upgrade the high colour temperature of two register-stored, the turn-on time of low color temperature light sources module, realize the adjusting of the colour temperature of LED lamp; The output of two-way light source module control signal is arranged, respectively the control of corresponding high colour temperature, low colour temperature;
In control cycle; At first high colour temperature or the corresponding light source module control signal of low colour temperature are become high level from low level; And keep corresponding turn-on time, then, after the light source module control signal of high colour temperature or low colour temperature correspondence becomes low level; Low colour temperature or the corresponding light source module control signal of high colour temperature are become high level from low level, and keep corresponding turn-on time.
One power output module, when the corresponding light source module control signal of a certain colour temperature is high level, outputting drive voltage or electric current, it is luminous to drive corresponding light source module;
Time division multiplexing control module, power output module all are connected with power supply changeover device, and power supply changeover device is that time division multiplexing control module, power output module provide DC power supply.
The present invention seeks to realize like this:
LED light color temperature of the present invention is regulated driver through the time division multiplexing control module; The light source module control signal that the height colour temperature is corresponding was cut apart in the time; Make them at any one constantly, have one to be in high level at the most, power output module is one road outputting drive voltage or electric current at the most; It is luminous to drive corresponding light source module; The electric energy that like this power supply changeover device is provided is distributed to different branch roads in different time sections successively and is used, and does not just have the problem of the power overload that the power peak stack brings, thereby the configuration of the power output of power supply changeover device can be reduced to 1/2nd of prior art.Reducing of power supply changeover device power means that its volume and weight all reduces, thereby saved the cost of LED lamp.
Description of drawings
Fig. 1 is that LED light color temperature of the present invention is regulated a kind of embodiment schematic diagram of driver;
Fig. 2 is a kind of embodiment schematic diagram of time division multiplexing control module shown in Figure 1;
Fig. 3 is a kind of embodiment theory diagram of power output module shown in Figure 1;
Fig. 4 is the another kind of embodiment theory diagram of power output module shown in Figure 1;
Fig. 5 is the another kind of embodiment theory diagram of power output module shown in Figure 1;
Fig. 6 is the another kind of embodiment theory diagram of power output module shown in Figure 1;
Fig. 7 is the another kind of embodiment theory diagram of power output module shown in Figure 1;
Fig. 8 is the sequential chart of light source module control signal at different next instantiations of colour temperature state.
Embodiment
Describe below in conjunction with the accompanying drawing specific embodiments of the invention, so that those skilled in the art understands the present invention better.What need point out especially is that in the following description, when perhaps the detailed description of known function and design can desalinate main contents of the present invention, these were described in here and will be left in the basket.
Fig. 1 is that LED light color temperature of the present invention is regulated a kind of embodiment schematic diagram of driver.
In the present embodiment, as shown in Figure 1, LED light color temperature is regulated driver 2 and is comprised time division multiplexing control module 201 and power output module 202.
Time division multiplexing control module 201 has two-way light source module control signal PMW1, PMW2 output, the control of corresponding high colour temperature, low colour temperature respectively.
Time division multiplexing control module 201, power output module 202 all are connected with power supply changeover device 1, and power supply changeover device 1 provides DC power supply for time division multiplexing control module 201, power output module 202.In the present embodiment, power supply changeover device 1 comprises AC-DC transducer 101 and plug 102; Plug 102 is single-phase three end plugs, comprises live wire end L, earth terminal E, zero line side N, is connected with electrical network through plug-in power pack transducer 1, obtains AC power.AC-DC transducer 101 will convert direct current into from the alternating current that electrical network obtains, and offer time division multiplexing control module 201, power output module 202.The structure and the principle of power supply changeover device belong to prior art, repeat no more at this.
Fig. 2 is a kind of embodiment schematic diagram of time division multiplexing control module shown in Figure 1.
In the present embodiment, as shown in Figure 2, time division multiplexing control module 201 comprises a microprocessing unit (MCU) 2011 and DC-DC transducer 2012; Two register R1, R2 and communication interfaces are arranged in the microprocessing unit 2011, and in the present embodiment, communication interface is DALI interface (Digital Addressable Lighting Interface, the lighting interface of digital address).
Two register R1, R2 are respectively applied for the turn-on time of the high colour temperature of storage, low color temperature light sources module; Communication interface is regulated control circuit with colour temperature and is connected; Reception is regulated the high colour temperature of control circuit, data DATA turn-on time of low color temperature light sources module from colour temperature; Be used to regulate and upgrade the high colour temperature of two register R1, R2 storage, the turn-on time of low color temperature light sources module, realize that the colour temperature of LED lamp is regulated.
Because in the present embodiment; 1 output of power supply changeover device, one road direct current Vdd, because it provides power supply need for simultaneously power output module 202, its magnitude of voltage is higher; Therefore need be with its step-down; To satisfy the requirement of microprocessing unit 2011 required power supplys, DC-DC transducer 2012 carries out step-down with direct current Vdd exactly, exports the power supply as microprocessing unit 2011 then.
Fig. 3 is a kind of embodiment theory diagram of power output module shown in Figure 1.
In the present embodiment; As shown in Figure 3; Power output module 202 comprises two constant-flow driver Q1, Q2, and said constant-flow driver Q1, Q2 all have the PWM dimming interface, when a certain road light source module control signal is high level; Being attached thereto the constant-flow driver that connects has drive current output, and it is luminous to drive corresponding light source module.In addition, constant-flow driver is a constant-current source with open-circuit-protection.
In control cycle T,, become high level for the corresponding light source module control signal PWM1 of high colour temperature from low level in the present embodiment at first with a colour temperature; And keep corresponding t1 turn-on time; Then, after the corresponding light source module control signal PWM1 of high colour temperature becomes low level, with another; Light source module control signal PWM2 for low colour temperature correspondence becomes high level from low level in the present embodiment, and keeps corresponding t2 turn-on time.
As shown in Figure 1; The nonoverlapping two-way light source of time division multiplexing control module 201 output high level module control signal PWM1, PWM2 signal; When light source module control signal PWM1 was high level, it is luminous that constant-flow driver Q1 output driving current drives the high color temperature light source module; When light source module control signal PWM2 was high level, it is luminous that constant-flow driver Q2 output driving current drives low color temperature light sources module; Thereby realize the defeated power different time sections in control cycle T of power supply, be assigned to the high color temperature light source module, be assigned to low color temperature light sources module via constant-flow driver Q2 via constant-flow driver Q1.
Through t1 turn-on time, the t2 of high colour temperature, low color temperature light sources module are set, the high level time of control light source module control signal PWM1, PWM2 is realized the adjusting of LED light color temperature.
Fig. 4 is the another kind of embodiment theory diagram of power output module shown in Figure 1.
In the present embodiment; As shown in Figure 4; The nonoverlapping two-way light source of time division multiplexing control module 201 output high level module control signal PWM1, PWM2, every road light source module control signal is controlled two groups of constant-flow drivers, when light source module control signal PWM1 is high level; Constant-flow driver Q1A and Q1B have output, and high color temperature light source module 1A and 1B are luminous; When light source module control signal PWM2 is high level; Constant-flow driver Q2A and Q2B have output; Low color temperature light sources module 2A and 2B are luminous; Thereby realize the different time sections of defeated power in control cycle T of power supply changeover device; Be assigned to high color temperature light source module 1A and 1B, be assigned on low color temperature light sources module 2A and the 2B via constant-flow driver Q1A and Q1B,, realize the adjusting of LED light color temperature through the high level time of two-way light source module control signal PWM1, PWM2 is set via constant-flow driver Q2A and Q2B.
In the present embodiment; A rated power of LED lamp is the 40W warm flat lamp of mixing colours; The Lights section is made up of with 2B two group of 14 string 24 and high colour temperature simple grain 0.06W light source module 1A and 1B and two group of 14 string 24 and low colour temperature simple grain 0.06W light source module 2A, and four groups of individual light source modules adopt the independent loop connection separately.
Fig. 5 is the another kind of embodiment theory diagram of power output module shown in Figure 1.
In the present embodiment; As shown in Figure 5, power output module 202 comprises a constant-flow driver 2021 and two switching tube K1, K2, and constant-flow driver 202 is a constant-current source with open-circuit-protection; Light source module D1, the D2 of corresponding colour temperature connect respectively with separately for two switching tube K1, K2; In the present embodiment, light source module D1, D2 are respectively high color temperature light source module and low color temperature light sources module, all are connected to the output of constant-flow driver 2021 then; Two-way light source module control signal PWM1, PWM2 receive the switching tube K1 of corresponding colour temperature, the control end of K2 respectively; When a certain road light source module control signal is high level, be attached thereto the switching tube conducting that connects, it is luminous that constant-flow driver has output to drive corresponding light source module through this switching tube.This mode, with respect to Fig. 3, the power output module shown in 4, constant-flow driver of its needs, cost greatly reduces like this.
Fig. 6 is the another kind of embodiment theory diagram of power output module shown in Figure 1.
In the present embodiment; As shown in Figure 6; Power output module 202 includes only two switching tube K1, K2, two switching tube K1, K2 respectively with light source module D1, the D2 series connection of corresponding colour temperature separately, all be directly connected to output Vdd, the GND of power supply changeover device then; Two-way light source module control signal PWM1, PWM2 receive the switching tube K1 of corresponding colour temperature, the control end of K2 respectively; When a certain road light source module control signal is high level, be attached thereto the switching tube conducting that connects, it is luminous that power supply changeover device output drives corresponding light source module through this switching tube.
This mode, with respect to power output module shown in Figure 5, two switching tube K1 of its needs, K2, cost then further reduces like this.
Fig. 7 is the another kind of embodiment theory diagram of power output module shown in Figure 1.
In the present embodiment, as shown in Figure 7, power output module 202 comprises an AC-DC constant-flow driver 2021 and two switching tube K1, K2; AC-DC constant-flow driver 202 is a constant-current source with open-circuit-protection, and it places constant-flow driver shown in Figure 5 with the AC-DC modular converter, directly obtains electric energy from electrical network, comes down to combine the power supply changeover device among Fig. 51 with constant-flow driver.It is identical that LED lamp among other courses of work and principle and Fig. 5 is regulated driver, repeats no more.
Fig. 8 is the sequential chart of light source module control signal at different next instantiations of colour temperature state.
In the present embodiment; As shown in Figure 5; (a)～(d) be light source module control signal at different colour temperature states, promptly in colour temperature Gao Liang, middle colour temperature half bright, high colour temperature Gao Liang, high colour temperature half bright) light source module control signal PWM1, the PWM2 signal timing diagram of time division multiplexing control module 202 outputs down.Wherein turn-on time t1 corresponding light source module control signal PWM1 high level time, turn-on time t2 corresponding light source module control signal PWM2 high level time, control cycle T=4ms does.
The high bright state time division multiplexing module sequential chart of colour temperature during Fig. 8 (a) is depicted as, t1=2ms, t2=2ms, t1+t2=T, the about 40W of constant-flow driver power output, high color temperature light source module and low color temperature light sources module are all with half-power work.
Colour temperature half bright state time division multiplexing module sequential chart during Fig. 8 (b) is depicted as, t1=1ms, t2=1ms, t1+t2=T/2, the about 20W of constant-flow driver power output, high color temperature light source module and low color temperature light sources module are all with 1/4 power work.
Fig. 8 (c) is depicted as the high bright state time division multiplexing module sequential chart of high colour temperature, t1=4ms, and t2=0ms, t1+t2=T, the about 40W of constant-flow driver power output, high color temperature light source module full power operation, low color temperature light sources module is not worked;
Fig. 8 (d) is depicted as high colour temperature half bright state time division multiplexing module sequential chart, t1=2ms, and t2=0ms, t1+t2=T/2, the about 20W of device power output is driven in constant current, the work of high color temperature light source module half-power, low color temperature light sources module is not worked.
4 instances that colour temperature is regulated have more than been provided; Other colour temperature states can be through the high level time of adjustment light source module control signal PWM1, PWM2; That is: change t1 turn-on time, t2, control high color temperature light source module, low color temperature light sources module, thus colour mixture becomes the different-colour state.For the adjusting of a certain colour temperature, keeping changing t1 turn-on time, t2 under the constant situation of brightness, but t1, t2 sum keep a definite value.
Simultaneously; Fig. 8 can find out, as long as the maximum power of LED lamp confirms that the maximum power of each light source module is also just confirmed; And it is identical with the maximum power of LED lamp; This is because the high-high brightness of the high-high brightness of monochromatic temperature when showing when showing with two colour temperatures should be consistent, not so during the colour temperature adjusting, luminance transformation can take place.
In the present embodiment, if adopt the traditional driving mode, light source module control signal PWM1 can occur, PWM2 is high level, the situation of power peak stack needs to dispose the power supply changeover device of 80W this moment.And adopt scheme of the present invention, power supply changeover device power is 1/2nd of traditional scheme.In addition since can the emergent power peak value situation of stack, power output is also comparatively steady.
In the present embodiment, as shown in Figure 5, in control time T, evenly at interval, can further keep the stationarity of power supply changeover device 1 power output like this between the high level of each light source module control signal PWM1, PWM2.
Light source module control signal pwm signal of the present invention adopts positive logic; With the high level is effective; Power controlling output module output, the light source module that drives high colour temperature, low colour temperature is luminous, and the present invention also can the employing negative logic; Or the mode of mixed logic mixing, realize the control that the power output peak value is complementary.
Although above the illustrative embodiment of the present invention is described; So that the technical staff in present technique field understands the present invention, but should be clear, the invention is not restricted to the scope of embodiment; To those skilled in the art; As long as various variations appended claim limit and the spirit and scope of the present invention confirmed in, these variations are conspicuous, all utilize innovation and creation that the present invention conceives all at the row of protection.
Claims (7)
1. a LED light color temperature is regulated driver, it is characterized in that, comprising:
One time-division multiplexing control module; The time division multiplexing control module has two each and every one register and communication interfaces; Two registers are respectively applied for the turn-on time of the high colour temperature of storage, low color temperature light sources module, and communication interface is regulated control circuit with colour temperature and is connected, and receive from colour temperature and regulate the high colour temperature of control circuit, data turn-on time of low color temperature light sources module; Be used to regulate and upgrade the high colour temperature of two register-stored, the turn-on time of low color temperature light sources module, realize the adjusting of the colour temperature of LED lamp; The output of two-way light source module control signal is arranged, respectively the control of corresponding high colour temperature, low colour temperature;
In control cycle; At first high colour temperature or the corresponding light source module control signal of low colour temperature are become high level from low level; And keep corresponding turn-on time, then, after the light source module control signal of high colour temperature or low colour temperature correspondence becomes low level; Low colour temperature or the corresponding light source module control signal of high colour temperature are become high level from low level, and keep corresponding turn-on time.
One power output module, when the corresponding light source module control signal of a certain colour temperature is high level, outputting drive voltage or electric current, it is luminous to drive corresponding light source module;
Time division multiplexing control module, power output module all are connected with power supply changeover device, and power supply changeover device is that time division multiplexing control module, power output module provide DC power supply.
2. LED light color temperature according to claim 1 is regulated driver, it is characterized in that described communication interface is digital addressable lighting interface.
3. LED light color temperature according to claim 1 is regulated driver, it is characterized in that described power output module comprises two constant-flow drivers, and constant-flow driver is a constant-current supply with open-circuit-protection; When a certain light source module control signal was high level, being attached thereto the constant-flow driver that connects had drive current output, and it is luminous to drive corresponding light source module.
4. LED light color temperature according to claim 1 is regulated driver, it is characterized in that described power output module comprises a constant-flow driver and two switching tubes;
Constant-flow driver is a constant-current supply with open-circuit-protection; Two switching tubes respectively with the light source module series connection of corresponding colour temperature separately; All be connected to the output of constant-flow driver then, two-way light source module control signal is received the control end of switching tube of corresponding colour temperature respectively, when a certain road light source module control signal is high level; Be attached thereto the switching tube conducting that connects, it is luminous that constant-flow driver has output to drive corresponding light source module through this switching tube.
5. LED light color temperature according to claim 1 is regulated driver, it is characterized in that described colour temperature is adjusted to: change the turn-on time of high colour temperature, low color temperature light sources module, but sum turn-on time of high colour temperature, low color temperature light sources module is kept a definite value.
6. LED light color temperature according to claim 1 is regulated driver, it is characterized in that, and is in control time T, at interval even between the high level of the light source module control signal of described high colour temperature, low colour temperature correspondence.
7. LED light color temperature according to claim 1 is regulated driver; It is characterized in that; Described power output module includes only two switching tubes, two switching tubes respectively with the light source module series connection of corresponding colour temperature separately, all be directly connected to the output of power supply changeover device then; Two-way light source module control signal is received the control end of switching tube of corresponding colour temperature respectively; When a certain road light source module control signal is high level, be attached thereto the switching tube conducting that connects, it is luminous that power supply changeover device output drives corresponding light source module through this switching tube.
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| CN201110272774A CN102316647A (en) | 2011-09-15 | 2011-09-15 | LED lamp color temperature adjusting driver |
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| CN201110272774A CN102316647A (en) | 2011-09-15 | 2011-09-15 | LED lamp color temperature adjusting driver |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103179757A (en) * | 2013-03-25 | 2013-06-26 | 浙江海振电子科技有限公司 | Time-sharing multi-path constant current driving light emitting diode (LED) lamp |
| CN104507231A (en) * | 2014-12-25 | 2015-04-08 | 昆山桑莱特新能源科技有限公司 | IoT (Internet of Things) lamp energy-saving controller based on ZigBee technology |
| CN108513396A (en) * | 2018-03-27 | 2018-09-07 | 广州市浩洋电子股份有限公司 | A kind of control method of LED lamp invariable power constant current time-sharing multiplex |
| CN110913950A (en) * | 2017-05-18 | 2020-03-24 | 加里·鲍尔森 | Lighting device and method of use |
| CN110996454A (en) * | 2019-12-31 | 2020-04-10 | 珠海雷特科技股份有限公司 | Complementary PWM dimming method |
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| CN103179757A (en) * | 2013-03-25 | 2013-06-26 | 浙江海振电子科技有限公司 | Time-sharing multi-path constant current driving light emitting diode (LED) lamp |
| CN103179757B (en) * | 2013-03-25 | 2015-07-08 | 浙江海振电子科技有限公司 | Time-sharing multi-path constant current driving light emitting diode (LED) lamp |
| CN104507231A (en) * | 2014-12-25 | 2015-04-08 | 昆山桑莱特新能源科技有限公司 | IoT (Internet of Things) lamp energy-saving controller based on ZigBee technology |
| CN110913950A (en) * | 2017-05-18 | 2020-03-24 | 加里·鲍尔森 | Lighting device and method of use |
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| CN110996454A (en) * | 2019-12-31 | 2020-04-10 | 珠海雷特科技股份有限公司 | Complementary PWM dimming method |
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Address after: The new 611731 Chengdu Road, Sichuan province high tech Zone No. 2 Applicant after: Sichuan Sunfor Light Co., Ltd. Address before: The new 611731 Chengdu Road, Sichuan province high tech Zone No. 2 Applicant before: Sichuan Sunfor Lighting Co., Ltd. |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120111 |