CN105430816A

CN105430816A - Light-emitting control device, light-emitting system using light-emitting control device, and control method of light-emitting system

Info

Publication number: CN105430816A
Application number: CN201410470348.7A
Authority: CN
Inventors: 胡安华
Original assignee: Mass Technology HK Ltd
Current assignee: Mass Technology HK Ltd
Priority date: 2014-09-15
Filing date: 2014-09-15
Publication date: 2016-03-23

Abstract

The application provides a control device for a light emitting diode (LED) lamp. The control device comprises: an electronic controller, which is used for inputting, on the basis of external inputs, a high color temperature control signal, a low color temperature control signal and a light modulation control signal according to preset processing programs; a first group of LED illuminants; a second group of LED illuminants; a first variable output constant current source, which provides current outputs to the first group of LED illuminants; and a second variable output constant current source, which provides current outputs to the second group of LED illuminants. The first variable output constant current source provides final current outputs to the first group of LED illuminants according to the high color temperature control signal and the light modulation control signal. The second variable output constant current source provides final current outputs to the second group of LED illuminants according to the low color temperature control signal and the light modulation control signal. Color temperatures and brightness of LED illuminants can be controlled continuously or controlled in a multi-level manner, a comfortable illumination environment can be provided according to life needs of people, and energy is also effectively saved.

Description

A kind of emission control device and use luminescent system and the control method of this emission control device

Technical field

The application relates to application and the control field of the light fixture using light-emitting diode (LED), more specifically, the invention discloses a kind of control device and use the luminescent system of this emission control device, for controlling the multiple controlled colour temperature amplitude of accommodation of LED lamp between preset color temperature point, and when can realize light modulation there is not the effect of significant change in colour temperature.

The application is conducive to being used in family expenses with on commercial LED lamp or other lighting installations.

Background technology

Along with the development of science and technology, semiconductor illumination technique is widely used in every field because of features such as energy-saving and environmental protection, life-span length, particularly high-power white light-emitting diode (LED) chip technology reaches its maturity, product covers more size, voltage, lumen exports and colour temperature.

For general lighting, people wish to regulate LED lamp as adjustment ordinary lamp and lantern, and obtain the illuminating effect being similar to sunlight or candle light.This just regulates the colour temperature of LED lamp and luminosity and has higher requirement.

At present, the method and structure of the output color of several change LED lamp has been proposed in prior art.Such as, United States Patent (USP) 4837565 proposes and uses red LED and green LED to produce yellow, and the LED that United States Patent (USP) 8212466 proposes use two groups of different wave lengths produces the colour temperature of combination according to Planckian locus (planckianlocus).

In the multiple LED lamp regulation technology of prior art, still there is many technological deficiencies.Such as, when there is many group LED, needing complicated control circuit to control each group LED, adding design complexities and production cost; When using the combination of many group LED, larger adjustable range cannot be obtained.Therefore, current industry still needs a kind of simplicity of design and can regulate the LED lamp control system of colour temperature and light modulation on a large scale.

Summary of the invention

For above prior art defect, one of object of the application is to provide that a kind of structure is simple, the control device of low production cost to be to control colour temperature and the brightness of LED lamp.Present applicant proposes a kind of electronic controller, comprise two independently control inputs: colour temperature and luminance level.The controller of the application can accept various conventional input mode available at present, such as two independently 0-10V direct current lamp optical control signal, pulse-width signal (PWM), more the holding wire of single group can be used to control colour temperature and luminance level with the control signal of LED digital dimming scheme (DLT) or digital addressable lighting interface (DALI) simultaneously.The controller of the application can control to organize LED strip more simultaneously, realize when light modulation output is the highest, wherein at least one group of LED is in the level of maximum output, and has the adjustable feature of colour temperature gamut between the colour temperature of each LED strip, which thereby enhances the overall performance of LED luminescent system.The controller of the application can use multiple technologies known in the art to build, such as single-chip microcomputer (MCU), production cost low and can be freely programmed for accept multiple different wired or wireless control signal, with realize static state or dynamic independent colour temperature and light modulation is continuous or classification preset.

According to first aspect of the application, propose a kind of emission control device, comprising:

Electronic controller, there is colour temperature control input end and brightness adjustment control input, be respectively used to the colour temperature control inputs signal and the brightness adjustment control input signal that receive outside input, and there is the first colour temperature control output end, second colour temperature control output end, and brightness adjustment control output, for the described colour temperature control inputs signal that inputs based on outside and described brightness adjustment control input signal, the first colour temperature control signal and the second colour temperature control signal is exported respectively to regulate the colour temperature of illumination effect according to the handling procedure preset, and export dimming control signal to carry out light modulation, first variable output constant current source, comprise: the first colour temperature control input end, be coupled to the first colour temperature control output end of described electronic controller, for receiving the first colour temperature control signal, brightness adjustment control input, is coupled to the brightness adjustment control output of described electronic controller, for receiving dimming control signal, first output, provides the first electric current to export, second variable output constant current source, comprise: the second colour temperature control input end, be coupled to the second colour temperature control output end of described electronic controller, for receiving the second colour temperature control signal, brightness adjustment control input, is coupled to the brightness adjustment control output of described electronic controller, for receiving dimming control signal, second output, provides the second electric current to export, wherein, the size that described first variable output constant current source regulates described first electric current to export according to described first colour temperature control signal, and regulate described first electric current to export the ratio of size according to described both dimming control signals, the size that described second variable output constant current source regulates described second electric current to export according to the second colour temperature control signal, and regulate described second electric current to export the ratio of size according to described both dimming control signals, the size exported by the second electric current of the first electric current output and described second variable output constant current source that control described first variable output constant current source and ratio regulate the illumination effect of colour temperature and/or light modulation.

According to second aspect of the application, described first colour temperature control signal is the first pulse duration colour temperature control signal, and described second colour temperature control signal is the second pulse duration colour temperature control signal, and described dimming control signal is DC level dimming control signal.

According to the 3rd aspect of the application, described electronic controller comprises: miniature control unit, store the program able to programme preset, and comprise multiple IO passage, one or more for receiving in following input control signal respectively: main switch detects input signal, the control inputs signal of digital dimming scheme, the colour temperature control inputs signal of DC voltage form, the brightness adjustment control input signal of DC voltage form, described miniature control unit is based on the program of above-mentioned input control signal and internal preset, export inner PWM colour temperature control signal, inner PWM dimming control signal, the PWM synchronizing signal of 50% duty ratio, PWM source selector, be coupled to the inside PWM colour temperature control signal output of described miniature control unit and inner PWM dimming control signal output, and be coupled and receive outside PWM colour temperature control inputs signal and outside PWM brightness adjustment control input signal, for the inside PWM colour temperature control signal and the inner PWM dimming control signal that determine to select described miniature control unit to export or select the outside PWM colour temperature control inputs signal of outside input and outside PWM brightness adjustment control input signal, and the outside PWM colour temperature control inputs signal of selected inside PWM colour temperature control signal or outside input is exported toward PWM to pulse duration processing unit as PWM colour temperature control signal, the outside PWM brightness adjustment control input signal of selected inside PWM dimming control signal or outside input is exported toward PWM voltage integrator as PWM dimming control signal, PWM is to pulse duration processing unit, be coupled to the output of described PWM source selector, for the PWM synchronizing signal based on the PWM colour temperature control signal inputted and 50% duty ratio, produce described first pulse duration colour temperature control signal to described first variable output constant current source, produce described second pulse duration colour temperature control signal to described second variable output constant current source, at any time, one of them of described first pulse duration colour temperature control signal and described second pulse duration colour temperature control signal can be in full scale output state, another then can be controlled between maximum output state and minimum output state, PWM voltage integrator, be coupled to the output of described PWM source selector, for carrying out integration to the PWM dimming control signal of input, produce the stable DC voltage value be directly proportional to pwm pulse width, be supplied to described first variable output constant current source and described second variable output constant current source as described DC level dimming control signal.

According to the 4th aspect of the application, described PWM comprises to pulse duration processing unit: inverter, receives the PWM synchronizing signal of described 50% duty ratio, and it is anti-phase, Ti Gong Give first XOR gate (G1), described first XOR gate, comprise first input end for receiving the output of described inverter and comprising the second input for receiving described PWM colour temperature control signal, and the output of described inverter and described PWM colour temperature control signal are compared, if the duty ratio of described PWM colour temperature control signal is more than 50%, just can obtain high level output at the output of described first XOR gate, this output signal is provided to the D input of D flip-flop, delay line (DL1) and the second XOR gate (G2) form pulse generator, the input of described delay line receives the PWM synchronizing signal of described 50% duty ratio, output second XOR gate described in Bei Ti Gong Give equally of described delay line, the output of the more described delay line of described second XOR gate and the PWM synchronizing signal of described 50% duty ratio, with 0% and 50% two CLK end providing clock pulse signal to arrive described D flip-flop in the PWM cycle, described D flip-flop Q, comprise D input, CLK inputs, Q exports and NOT-Q exports, the output of described first XOR gate is coupled in described D input, the output of described second XOR gate is coupled in described CLK input, described Q exports and is coupled to first or door, described NOT-Q exports and is coupled to the 3rd XOR gate (G3), when the duty ratio of described PWM colour temperature control signal is greater than 50%, Q exports the output signal of 50% generation high level before PWM synchronous signal cycle, then after the remainder of PWM synchronous signal cycle, 50% low level is reset to, and when the duty ratio of described PWM colour temperature control signal is less than 50%, Q exported and remain low level on the whole PWM refresh cycle.And the described NOT-Q of D flip-flop exports and described Q exports anti-phase; Described first or door receive described Q and export and described PWM colour temperature control signal, carry out logic OR operation and its output is coupled to the first buffer, the output of described first buffer provides described first pulse duration colour temperature control signal; Described 3rd XOR gate receives described NOT-Q and exports and described PWM colour temperature control signal, and output is coupled to the second buffer, and the output of described second buffer provides described second pulse duration colour temperature control signal; When the duty ratio of PWM colour temperature control inputs signal is less than 50%, described first or the output of door make described first pulse duration colour temperature control signal follow described PWM colour temperature control signal and change, and the NOT-Q output of described D flip-flop is in high level, the output of described 3rd XOR gate makes described second pulse duration colour temperature control signal become high level signal; When the duty ratio of described PWM colour temperature control signal is greater than 50%, described first or the output of the door high level signal that makes described first pulse duration colour temperature control signal select the Q of described D flip-flop to export, and the NOT-Q output of described D flip-flop is in low level, the output of described 3rd XOR gate makes described second pulse duration colour temperature control signal follow described PWM colour temperature control signal and change; Thus, one of them making described first pulse duration colour temperature control signal and described second pulse duration colour temperature control signal can be in full scale output state, and another then can be controlled between maximum output state and minimum output state.

According to the 5th aspect of the application, above control device also comprises: synchronous generator, be coupled to described miniature control unit and described PWM source selector, when determining to select the outside PWM colour temperature control inputs signal from outside input, monitor and utilize the refresh rate of described outside PWM colour temperature control inputs signal, produce the PWM synchronizing signal of 50% duty ratio, the PWM synchronizing signal of 50% duty ratio provided by described miniature control unit is provided, and exports to described PWM to pulse duration processing unit.

According to the 6th aspect of the application, in above control device, when needing colour temperature and the light modulation of varying level, described first pulse duration colour temperature control signal is set to provide the pulse duration of the first ratio to determine the size that described first electric current exports, described second pulse duration colour temperature control signal is set to provide the pulse duration of the second ratio to determine the size that described second electric current exports, described DC level dimming control signal is set to allow described first variable output constant current source to be exported by described first electric current and controls in the first percentage range of the determined size of pulse duration by described first ratio, and allow described second variable output constant current source to control in the second percentage range of the determined size of pulse duration by described second ratio by described second electric current output.

According to the 7th aspect of the application, above control device comprises following working condition: when needs high color temperature exports, described first pulse duration colour temperature control signal is set to provide the pulse duration of about 100%, and described second pulse duration colour temperature control signal is set to provide the pulse duration of about 2%; Coordinate the scope of described DC level dimming control signal 0%-100%, it is 0%-about 100% that described first electric current in described first variable output constant current source exports, and the described second electric current output in described second variable output constant current source is 0%-about 2%; When the low colour temperature of needs exports, described first pulse duration colour temperature control signal is set to provide the pulse duration of about 2%, and described second pulse duration colour temperature control signal is set to provide the pulse duration of about 100%; Coordinate the scope of described DC level dimming control signal 0%-100%, it is 0%-about 2% that described first electric current in described first variable output constant current source exports, and the described second electric current output in described second variable output constant current source is 0%-about 100%; When needing relatively high colour temperature to export, described first pulse duration colour temperature control signal is set to provide the pulse duration of about 100%, and described second pulse duration colour temperature control signal is set to the pulse duration providing 20%; Coordinate the scope of described DC level dimming control signal 0%-100%, it is 0%-about 100% that described first electric current in described first variable output constant current source exports, and described second electric current in described second variable output constant current source exports as 0%-20%; When needing relatively low colour temperature to export, described first pulse duration colour temperature control signal is set to the pulse duration providing 10%, and described second pulse duration colour temperature control signal is set to provide the pulse duration of about 100%; Coordinate the scope of described DC level dimming control signal 0%-100%, it is 0%-about 100% that described first electric current in described first variable output constant current source described second electric current exported as 0%-10% and described second variable output constant current source exports.

According to the 8th aspect of the application, this control device comprises further: AC-DC supply convertor, the colour temperature control input end of described electronic controller and brightness adjustment control input are coupled respectively to colour temperature control input end and the brightness adjustment control input of DC voltage form, and described AC-DC supply convertor is coupled to wall surface switch further; Described wall surface switch can switch between logical ON and disconnected OFF, and main power source input is supplied to described AC-DC supply convertor, described first variable output constant current source and described second variable output constant current source; The main power source input that described wall surface switch inputs by described AC-DC supply convertor is converted to DC input power supply to electronic controller, and the switching of on/off state based on described wall surface switch, generate main switch and detect input signal, be supplied to the described colour temperature control input end of described electronic controller and described brightness adjustment control input, described electronic controller provides the output of described first colour temperature control signal, described second colour temperature control signal and described dimming control signal according to the handling procedure preset.

According to the 9th aspect of the application, this control device comprises: AC-DC supply convertor, the colour temperature control input end of described electronic controller and brightness adjustment control input are coupled respectively to colour temperature control inputs and the brightness adjustment control input of DC voltage form, and described electronic controller is coupled to AC-DC supply convertor; Main power source input is provided to described AC-DC supply convertor, described first variable output constant current source and described second variable output constant current source; Described main power source input is converted to DC input and is supplied to electronic controller by described AC-DC supply convertor; The colour temperature control input end of described DC voltage form and brightness adjustment control input provide the colour temperature control inputs signal of DC voltage form and the brightness adjustment control input signal of DC voltage form to the described miniature control unit in described electronic controller, make described electronic controller according to the handling procedure preset to provide the output of described first colour temperature control signal, described second colour temperature control signal and described dimming control signal.

According to the tenth aspect of the application, this control device also comprises: wireless module, be coupled to described electronic controller, and be coupled to wireless antenna, for wirelessly going to receive colour temperature control inputs signal and brightness adjustment control input signal from the control appliance of user by described wireless antenna, carry out processing and identifying, produce the colour temperature control inputs signal of PWM form and the brightness adjustment control input signal of PWM form; AC-DC supply convertor, described electronic controller is coupled to described AC-DC supply convertor; Main power source input provides power supply to described AC-DC supply convertor, described first variable output constant current source and described second variable output constant current source; Described main power source input is converted to DC input and is supplied to electronic controller and described wireless module by described AC-DC supply convertor; Colour temperature control input end and the brightness adjustment control input of described electronic controller are coupled respectively to wireless module, receive the colour temperature control inputs signal of described PWM form and the brightness adjustment control input signal of PWM form, and be directly supplied to PWM source selector further around described miniature control unit, make described electronic controller according to the handling procedure preset to provide the output of described first colour temperature control signal, described second colour temperature control signal and described dimming control signal.

According to the 11 aspect of the application, this control device also comprises: the wireless module with MCU function, be coupled to described electronic controller, and be coupled to wireless antenna, comprise: with the microprocessor of real-time clock, this microprocessor described is communicated with the control appliance of user by wireless antenna, obtain the time-based control table of user, described control table can be user-defined for be defined in every day different particular point in time time need the colour temperature taked and dimming control requests, described microprocessor stores described control table, and according to the requirement in control table, the colour temperature control inputs signal of corresponding PWM form and the brightness adjustment control input signal extremely described electronic controller of PWM form is exported when particular point in time arrives, AC-DC supply convertor, described electronic controller is coupled to described AC-DC supply convertor, main power source input is provided to described AC-DC supply convertor, described first variable output constant current source and described second variable output constant current source, described main power source input is converted to DC input and is supplied to electronic controller and the described wireless module with MCU function by described AC-DC supply convertor, there is described in the colour temperature control input end of described electronic controller and brightness adjustment control input are coupled respectively to the wireless module of MCU function, receive the colour temperature control inputs signal of described PWM form and the brightness adjustment control input signal of described PWM form, and be directly supplied to PWM source selector further around described miniature control unit, make described electronic controller according to the handling procedure preset to provide the output of described first colour temperature control signal, described second colour temperature control signal and described dimming control signal.

According to the 12 aspect of the application, this control device also comprises: AC-DC supply convertor, be coupled to described electronic controller, wherein said electronic controller comprises digital Lighting control input, be coupled to external digital lighting control circuit, for receiving the digital lighting control inputs signal of outside input; Described wall surface switch can switch between logical ON and disconnected OFF, and main power source input is supplied to described AC-DC supply convertor, described first variable output constant current source and described second variable output constant current source; Described digital lighting control inputs signal is provided to the described miniature control unit in described electronic controller, described miniature control unit, according to the handling procedure program preset, produces based on described digital lighting control inputs signal and provides the output of described first colour temperature control signal, described second colour temperature control signal and described dimming control signal.

According to the 13 aspect of the application, described default handling procedure is programmable, and is pre-arranged when dispatching from the factory in described miniature control unit, and can carry out programming amendment or upgrading according to the needs of different performances.

According to the 14 aspect of the application, described first electric current is exported the first group of LED illuminator being supplied to described first output being coupling in described first variable output constant current source by described first variable output constant current source, and described second electric current is exported the second group of LED illuminator being supplied to described second output being coupling in described second variable output constant current source by described second variable output constant current source; The colour temperature of described first group of LED illuminator is higher than the colour temperature of described second group of LED illuminator.

According to the 15 aspect of the application, propose a kind of luminescent system, comprising: the emission control device as described in above many aspects; Be coupling in first group of LED illuminator of described first output in described first variable output constant current source, and be coupling in second group of LED illuminator of described second output in described second variable output constant current source; The colour temperature of described first group of LED illuminator organizes the colour temperature of LED illuminator higher than described.

According to the 16 aspect of the application, propose a kind of control method of luminescent system, comprising: enable initial work state, default colour temperature and brightness effect are provided; Judge whether to receive colour temperature control inputs signal and brightness adjustment control input signal; If receive colour temperature control inputs signal and brightness adjustment control input signal, then new mode of operation is set according to the handling procedure preset; According to set mode of operation, produce corresponding colour temperature control signal and dimming control signal to the first variable output constant current source and the second variable output constant current source; Based on corresponding colour temperature control signal and dimming control signal, described first variable output constant current source and the second variable output constant current source export the first electric current output respectively and the second electric current exports first group of LED illuminator and second group of LED illuminator to; Export based on described first electric current and described second electric current output, described first group of LED illuminator and described second group of LED illuminator export according to the DC electric current received carries out luminescence; The size that wherein said first variable output constant current source regulates described first electric current to export according to described first colour temperature control signal, and regulate described first electric current to export the ratio of size according to described both dimming control signals, the size that described second variable output constant current source regulates described second electric current to export according to the second colour temperature control signal, and regulate described second electric current to export the ratio of size according to described both dimming control signals, regulate colour temperature and/or the light modulation of illumination effect thus.

According to the 17 aspect of the application, also comprise: judge whether power-off, if power-off, then described luminescent system shutdown, otherwise described first group of LED illuminator and described second group of LED illuminator keep output state constant.

According to the 18 aspect of the application, described default handling procedure is programmable, and be pre-arranged in described miniature control unit when dispatching from the factory, and programming amendment or upgrading can be carried out according to the needs of different performances, described initial work state is set in advance in the electronic controller of luminescent system by manufacturer, and to provide can be one of following initialized mode of operation: what preset is minimum operating state in conjunction with colour temperature and lumen, the effect that namely colour temperature/brightness is minimum; What preset is the highest operating state in conjunction with colour temperature and lumen, the effect that namely colour temperature/brightness is the highest; The last operating state in conjunction with colour temperature and lumen when previous luminescent system is closed

According to the nineteen aspect of the application, judge whether to receive colour temperature control inputs signal and brightness adjustment control input signal comprises: if do not receive colour temperature control inputs signal and brightness adjustment control input signal, then continue to remain on current mode of operation.

According to the 20 aspect of the application, described method is used to control the luminescent system shown in as described in above many aspects.

The LED prodigiosin realized according to the application reduces retailer to the demand of different-colour LED lamp stockpile number, provides comfortable lighting environment, provide the lighting solutions of suitable mankind's body sense of low cost to terminal use or business user to user.

Should be appreciated that the generality of more than the application describes and the following detailed description is all exemplary and explanat, and be intended to for the application as claimed in claim provides further explanation.

Accompanying drawing explanation

Comprising accompanying drawing is further understand the application for providing, and they are included and form a application's part, and accompanying drawing shows the embodiment of the application, and plays the effect explaining the application's principle together with this specification.After the embodiment to specific non-limiting the application by reference to the accompanying drawings and below having read, other features of the application and advantage will become apparent.Wherein:

Fig. 1 is the conceptual principle assumption diagram of the control device of an embodiment according to the application;

Fig. 2 shows and realizes schematic diagram according to the electronic controller in Fig. 1 of an embodiment of the application;

Fig. 2 A shows a kind of embodiment of PWM synchronous generator;

Fig. 2 B shows a kind of execution mode of PWM to pulse duration processing unit;

Fig. 2 C shows a kind of execution mode of PWM voltage integrator;

The first showing according to an embodiment of the application of Fig. 3 specifically implements structure;

Fig. 4 shows and specifically implements structure according to the second of an embodiment of the application;

Fig. 5 shows and specifically implements structure according to the third of an embodiment of the application;

Fig. 6 shows and specifically implements structure according to the 4th kind of the embodiment of the application;

Fig. 7 shows and specifically implements structure according to the 5th kind of the embodiment of the application;

Fig. 8 shows the flow chart of the brightness adjustment control process of an embodiment according to the application.

Embodiment

Now with detailed reference to the preferred embodiment of the application, its example is shown in the drawings.In the case of any possible, in all of the figs the identical mark of use is represented same or analogous part.In addition, although the term used in the application selects from public term, but some terms mentioned in present specification may be that applicant selects by his or her judgement, its detailed meanings illustrates in the relevant portion of description herein.In addition, require not only to pass through used actual terms, but the meaning that also will be contained by each term understands the application.

Fig. 1 is the conceptual principle assumption diagram of the control device of an embodiment according to the application.Fig. 1 forms primarily of three parts: multi-group light-emitting diode LED illuminator, provide direct current DC level to export the current source of control signal to many group LED, and according to the electronic controller that the control signal of outside input controls current source.

As shown in Figure 1, electronic controller 102 is configured to the one or more embodiments realizing the application.The colour temperature control input end of electronic controller 102 and brightness adjustment control input receive the colour temperature control inputs signal and brightness adjustment control input signal that input from outside next user, according to the control signal that these users input, generate three according to the program preset and export control signals: the high color temperature control signal in high color temperature control output end, at the low colour temperature control signal of low colour temperature control output end and the dimming control signal at brightness adjustment control output.The structure of electronic controller 102 will 3 further describe in detail hereinafter by reference to the accompanying drawings.In one embodiment, high color temperature control signal and low colour temperature control signal are the control signals of pulse duration form, and dimming control signal is the control signal of DC form.In one embodiment, electronic controller 102 can receive user's input of the routine of various form, includes but not limited to: two independently 0-10V direct current lamp optical control signal, the outside pulse-width signal (PWM) of input, the control signal of LED digital dimming scheme (DLT) or digital addressable lighting interfaces (DALI).DLT standard is IEC62756, DALI standard is IEC62386.In one embodiment, by this electronic controller 102, user can use conventional user's input to regulate the gentle brightness of the combined color of LED illuminator, realizes colour temperature adjustment/light modulation.In one embodiment, by this electronic controller 102, user can use conventional user's input to enable/forbid the control-time table preset, with the different particular point in time automatic output control signals in a day to regulate colour temperature and the brightness of LED lamp, realize ambient lighting solution completely automatically.

Current source comprises high color temperature variable output constant current source 104 and low variable color temperature output constant current source 106.The variable output constant current source 104 of high color temperature is coupled to high color temperature control output end and the brightness adjustment control output of electronic controller 102, and there is one group of DC current output terminal, first group of high color temperature LED illuminator is coupled with between this group DC current output terminal, whereby, DC electric current is provided to export to this first group of high color temperature LED illuminator.Low variable color temperature output constant current source 106 is coupled to low colour temperature control output end and the brightness adjustment control output of electronic controller 102, and there is group of DC current output terminal equally, second group low colour temperature LED illuminator is coupled with between this group DC current output terminal, whereby, DC electric current is provided to export to this second group low colour temperature LED illuminator.

In one embodiment, high color temperature variable output constant current source 104 and low variable color temperature output constant current source 106 are step-downs, the switching power supply regulator of buck or reverse exciting topological structure.Although illustrate only two variable output constant current sources and corresponding LED strip in Fig. 1, but it will be appreciated by those skilled in the art that, for technique effect and cost-benefit consideration, two or more variable output constant current sources and corresponding LED strip can be set when conditions permit.Such as, in another embodiment, four groups of variable output constant current sources and corresponding LED strip can be set.The current description of the application is all exemplary for illustration of high color temperature variable output constant current source 104 and low variable color temperature output constant current source 106 and annexation, is not intended to limit its quantity implemented.

According to an embodiment, first group of high color temperature LED strip and second group low colour temperature LED strip are made up of the LED chip of the blue-light excited fluorescent material conversion of white light of one or more colour temperature, and its building form can be series, parallel or connection in series-parallel combination.The LED chip of blue-light excited fluorescent material conversion of white light is compared to other monochromatic frequency spectrum LED chips (red LED of such as about 650nm)) there is better heat fade and aging property, like this, can operate at different temperatures, maybe the LED lamp of different degree of aging can be put together and run and there is no obvious colour temperature difference.The setting colour temperature of first group of high color temperature LED illuminator is different from the setting colour temperature of second group low colour temperature LED illuminator.In one embodiment, the colour temperature of second group of LED illuminator is lower than the colour temperature of first group of LED illuminator.In another embodiment, the colour temperature of first group of high color temperature LED illuminator is 7000K, and the colour temperature of second group of high color temperature LED illuminator is 2000K.

The variable output constant current source 104 of high color temperature is coupled to high color temperature control output end and the brightness adjustment control output of electronic controller 102, for the high color temperature control signal of received pulse format width and the dimming control signal of DC level.Low variable color temperature output constant current source 106 is coupled to low colour temperature control output end and the brightness adjustment control output of electronic controller 102, the low colour temperature control signal of received pulse format width and same DC level dimming control signal.

For the high/low colour temperature control signal of pulse duration form, when pulse width signal width increases, the DC electric current in variable output constant current source 104,106 exports size to be increased, and when pulse width signal width reduces, the DC electric current in variable output constant current source 104,106 exports size to be reduced.Thus, by providing the pulse width signal of different in width, the DC electric current of different size can be provided to export to first group of high color temperature LED illuminator and second group low colour temperature LED illuminator via variable output constant current source 104,106, the combination colour temperature making first group of high color temperature LED illuminator and second group low colour temperature LED illuminator produce thus changes.At any time, one of them being supplied to two pulse duration colour temperature control signals in variable output constant current source 104,106 can be in full scale output state, and another pulse duration colour temperature control signal then can control between minimum and maximum output state..

For DC level dimming control signal, in one embodiment, it can be the voltage control signal of 0-10V, for indicating different brightness adjustment control levels to variable output constant current source 104,106.DC level dimming control signal is lower, and the electric current export ratio in variable output constant current source 104,106 is lower.In one embodiment, DC level dimming control signal is 10V, then variable output constant current source 104,106 electric current exported indicated by pulse duration colour temperature control signal exports the complete ratio of size, and it is that quota exports that the electric current namely indicated by pulse duration colour temperature control signal exports.When DC level dimming control signal is 5V, then variable output constant current source 104,106 exports and can export the half of size by the electric current indicated by pulse duration colour temperature control signal, that is, the electric current exported indicated by pulse duration colour temperature control signal exports 50% of size.When DC level dimming control signal is 2V, then variable output constant current source 104,106 exports and can export 20% of size by the electric current indicated by pulse duration colour temperature control signal.Visible, simultaneously variable output constant current source 104,106 provides last ultimate current to export according to pulse duration colour temperature control signal and DC level dimming control signal.

When needing colour temperature and the light modulation of varying level, the high color temperature control signal being supplied to variable output constant current source 104 is set to the size providing the pulse duration of the first ratio to export with the electric current determining to be supplied to first group of LED illuminator, and the low colour temperature control signal being supplied to variable output constant current source 106 is set to the size providing the pulse duration of the second ratio to export with the electric current determining to be supplied to second group of LED illuminator.At any time, one of them pulse duration of the pulse duration of the first ratio and the pulse duration of the second ratio can be in full scale output state, and another pulse duration then can control between minimum and maximum output state.DC level dimming control signal is set to allow variable output constant current source 104 to be exported by the electric current being supplied to first group of LED illuminator and controls in the first percentage range of the determined size of pulse duration by described first ratio, and allows variable output constant current source 106 to control in the second percentage range of the determined size of pulse duration by described second ratio by the electric current output being supplied to second group of LED illuminator.

Next multiple possible performance will be provided.It will be appreciated by those skilled in the art that, the performance below provided is only exemplary, is not intended to exhaustive for the situation that realizes of the application or be restricted to and only have these.Those skilled in the art can know, isochronous controller is needed in PWM or pulse width control device, FR 0-100% output pulse width can not be provided substantially, therefore in following performance, select the scope of lowest duty cycle 2% and quota duty ratio 100% to demonstrate..

In one embodiment, when needs high color temperature, high color temperature control signal is set to the pulse duration providing 100%, and low colour temperature control signal is set to the pulse duration providing 2%; Coordinate the scope of described DC level dimming control signal 0%-100%, the electric current output allowing variable output constant current source 104 is by the 0%-100% of the determined size of pulse duration of 100%, and the electric current output allowing variable output constant current source 106 is by the 0%-2% of the determined size of pulse duration of 0%;

When the low colour temperature of needs, high color temperature control signal is set to the pulse duration providing 2%, and low colour temperature control signal is set to the pulse duration providing 100%; Coordinate the scope of described DC level dimming control signal 0%-100%, the electric current output allowing variable output constant current source 104 is by the 0%-2% of the determined size of pulse duration of 2%, and the described second electric current output allowing variable output constant current source 106 is by the 0%-100% of the determined size of pulse duration of 100%;

When needing relatively high colour temperature, high color temperature control signal is set to the pulse duration providing 100%, and low colour temperature control signal is set to the pulse duration providing 20%; Coordinate the scope of described DC level dimming control signal 0%-100%, the electric current output allowing variable output constant current source 104 is by the 0%-100% of the determined size of pulse duration of 100%, and the electric current output allowing variable output constant current source 106 is by the 0%-20% of the determined size of pulse duration of 20%;

When needing relatively low colour temperature, high color temperature control signal is set to the pulse duration providing 10%, and low colour temperature control signal is set to the pulse duration providing 100%; Coordinate the scope of described DC level dimming control signal 0%-100%, the electric current output allowing variable output constant current source 104 is by the 0%-10% of the determined size of pulse duration of 10%, and the electric current output allowing variable output constant current source 106 is by the 0%-100% of the determined size of pulse duration of 100%;

As can be seen from the above, when controlling the size that the electric current in variable output constant current source 104,106 exports via DC level dimming control signal, the pulse duration of pulse width signal does not change, thus, the process of light modulation is carried out to LED illuminator and be independently between the two to the process of LED illuminator color-temperature regulating, can separately carry out.Which increase the randomness that user controls colour temperature and brightness, improve Consumer's Experience.

What Fig. 2 showed the electronic controller 102 of an embodiment according to the application realizes schematic diagram.As shown in the figure, electronic controller 102 comprises miniature control unit (MCU), controls and program storage unit (PSU) as core.The various programmable logic processor parts that MCU can adopt industry conventional, it comprises the Digital and analog input signal being enough to receive the application, and can store the program able to programme preset.Such as, the series of the MSP430F with 10 passage I/O that MCU can adopt TIX to produce, or the series of the PIC16F with 12 passage I/O adopting Microchip Technology to produce.MCU can comprise the input of multiple general purpose I/O and analog input, for receiving four kinds of input control signals respectively: main switch detects the control inputs signal of input signal, digital dimming scheme (such as: DALI, DLT), DC0-10V colour temperature control inputs signal, DC0-10V brightness adjustment control input signal.Outside PWM colour temperature control inputs signal and outside PWM brightness adjustment control input signal then can be walked around MCU and be provided directly to subsequent circuit components (that is, PWM source selector discussed below).According to the difference of implementation, do not need all to adopt these input control signals.Such as, analog input can only be included for receiving DC0-10V colour temperature control inputs signal, DC0-10V brightness adjustment control input signal.Based on the control signal of outside input and the program of internal preset, MCU exports the PWM synchronizing signal of inner PWM colour temperature control signal, inner PWM dimming control signal and (optional under a performance) 50% duty ratio.Electronic controller described in Fig. 2 also comprises PWM source selector, be coupled to the inside PWM colour temperature control signal output of MCU and inner PWM dimming control signal output, and coupling is to receive outside PWM colour temperature control inputs signal, outside PWM brightness adjustment control input signal.Switch via PWM source selector is selected, the inside PWM colour temperature control signal that can determine to select MCU to export and inner PWM dimming control signal or select the outside PWM colour temperature control inputs signal of outside input and outside PWM brightness adjustment control input signal.When such as employing internal type hereafter (such as, main switch detects input signal, digital dimming scheme (such as: DALI, DLT) control inputs signal, DC0-10V colour temperature control inputs signal, DC0-10V brightness adjustment control input signal) when input control signal is provided, MCU these control signals inputted is converted to the PWM synchronizing signal of inner PWM colour temperature/brightness adjustment control output signal and 50% duty ratio and Zhi meets Shu Chu Give PWM to pulse duration processing unit, and by the switching over of PWM source selector for using inner PWM colour temperature/brightness adjustment control input signal.When outside PWM colour temperature/brightness adjustment control input signal that such as employing external mode (such as, wireless control terminal) hereafter provides, MCU can be walked around, by the switching over of PWM source selector for using outside PWM colour temperature/brightness adjustment control input signal.(inner or outside) PWM colour temperature control inputs signal of determining to select be used as PWM colour temperature control signal and be provided to PWM to pulse duration processing unit, institute determines that (inside or outside) the PWM brightness adjustment control input signal selected is used as PWM dimming control signal and is provided to PWM voltage integrator.The switch of PWM source selector can with a simple dpdt double-pole double-throw (DPDT) mechanical switch on the printed circuit board (PCB) of described electronic controller, or realized by an electronic switching circuit, and by factory preset, or selected to be adopt external mode input or internal type input as PWM source by installation personnel in erecting bed.

Synchronous generator is further illustrated at this, for determining the refresh rate of PWM colour temperature control signal, monitor and utilize the refresh rate of described PWM colour temperature control signal, produce the PWM synchronizing signal of 50% duty ratio, export to described PWM in the lump to pulse duration processing unit.In one embodiment, be generally just enable this synchronous generator when determining the outside PWM colour temperature control signal selecting external mode (such as, wireless control terminal) to provide in order to process outside PWM colour temperature control signal.In one embodiment, when determining when factory preset or in-site installation to select inner PWM colour temperature control signal, the PWM synchronizing signal of this 50% duty ratio can directly be supplied to described PWM to pulse duration processing unit (Fig. 2 dotted portion) from miniature control unit, can not synchronous generator be used in the case, save the correlative charges using synchronous generator.

With further reference to Fig. 2 A, show a kind of embodiment of PWM synchronous generator.PWM synchronous generator uses a common phase-locked loop, comprising voltage-controlled oscillator (VCO), and XOR gate (XOR) and " except 2 " circuit." except 2 " circuit is realized by D flip-flop.VCO is arranged on the frequencies operations of described input signal twice, and its hunting range can comprise the required frequency of operation of outside PWM colour temperature control signal.Such as, when the scope of PWM input is 300Hz to 600Hz, the output of VCO is 600Hz to 1.2kHz.The output of VCO is fed back to XOR gate by " except 2 " circuit, and XOR gate is used as phase comparator, and its input receives input signal, compares the output that termination receives " except 2 " circuit, and output phase error value.Phase error carries out filtering by RC network (R1+C1), and filtered signal is provided to VCO, exports the signal of double PWM refresh rate for adjusting VCO, the clock signal input C1 end of Ti Gong Give D flip-flop.And the PWM synchronizing signal of 50% duty ratio is exportable to obtain from the Q of D flip-flop end

PWM to pulse duration processing unit based on input PWM colour temperature control signal (namely, by source selector determine the inside that uses or the PWM colour temperature control signal of outside) and the PWM synchronizing signal of 50% duty ratio, produce described high color temperature pulse duration colour temperature control signal to high color temperature variable output constant current source 104, produce low colour temperature pulse duration colour temperature control signal give low variable color temperature output constant current source 106, to control the output brightness of high color temperature LED illuminator and low colour temperature LED illuminator respectively, and then reach the object controlling final array output colour temperature.

With reference to accompanying drawing 2B, figure 2 b show a kind of execution mode of PWM to pulse duration processing unit, it comprises: a series of pulse generator, gate, inverters/buffers and D flip-flop.

Be inverted by the synchronizing signal of synchronous generator or 50% duty ratio provided by MCU, and with described PWM colour temperature control signal (namely, by source selector determine use outside or inside PWM colour temperature control signal) compared by XOR (XOR) door G1, if the duty ratio of PWM colour temperature control inputs signal is more than 50%, just can obtain high level output signal in the output of XOR (XOR) door G1, this output signal is provided to the D input of D flip-flop.

The synchronizing signal of 50% duty ratio is also connected to the pulse generator of delay line DL1 and XOR gate G2 composition, the wherein output of delay line DL1 Bei Ti Gong Give XOR gate G2 equally, XOR gate G2 compares the output of delay line DL1 and the synchronizing signal of 50% duty ratio, with the PWM colour temperature control signal cycle 0% and 50% two provide clock pulse signal to hold to the CLK of D flip-flop.

Thus, output pulse signal received by described D flip-flop inputs based on its D and CLK hold the clock pulse signal received, when the duty ratio of PWM colour temperature control inputs signal is greater than 50%, Q to export before PWM synchronous signal cycle 50% and produces the output signal of high level, then after the remainder of PWM synchronous signal cycle, 50% is reset to low level.When PWM colour temperature control inputs signal is the pwm signal being less than 50% duty ratio, then Q exports and remains low level in the whole PWM refresh cycle.And the described NOT-Q of D flip-flop exports and described Q exports anti-phase.

The signal that D flip-flop Q exports is by diode D2, with the D1 be connected from PWM colour temperature control inputs signal form one or, should or door carry out logic OR-function after output is provided, should or the output of door be connected to high color temperature pulse width control signal output part 1 through the first output buffer (buffer 1).The NOT-Q of D flip-flop exports and is connected to low colour temperature pulse width control signal output part 2 by another XOR gate G3 through the second output buffer (buffer 2) with PWM colour temperature control inputs signal.

Thus, in conjunction with above structure, when PWM colour temperature control signal (namely, by source selector determine the PWM colour temperature control signal of outside or inside that uses) duty ratio when being less than 50%, or the output of door (i.e. the first pulse duration colour temperature control signal) is followed this PWM colour temperature control signal and changes, and the NOT-Q output of D flip-flop is in high level, the output (i.e. the second pulse duration colour temperature control signal) of XOR gate G3 also becomes high level signal;

When PWM colour temperature control signal (namely, by source selector determine the PWM colour temperature control signal of outside or inside that uses) duty ratio when being greater than 50%, or the high level signal that the output of door (i.e. the first pulse duration colour temperature control signal) selects Q to export, and the NOT-Q output of D flip-flop is in low level, the output (the second pulse duration colour temperature control signal) of XOR gate G3 is followed this PWM colour temperature control signal and changes.

Thus, at any time, one of them of two pulse duration colour temperature control signals can be in full scale output state, and another pulse duration colour temperature control signal then can control between minimum and maximum output state.

Present discussion PWM voltage integrator.PWM voltage integrator to the PWM dimming control signal of input (namely, by source selector determine the inside that uses or the PWM dimming control signal of outside) carry out integration, produce the stable DC voltage value be directly proportional to pulse duration, variable output constant current source 104,106 is supplied to, to control the light modulation brightness of high color temperature LED illuminator and low colour temperature LED illuminator simultaneously as DC level dimming control signal.An execution mode of PWM voltage integrator is illustrated in accompanying drawing 2C.It will be appreciated by those skilled in the art that and the multiple integrating circuit known can be adopted to realize carrying out integration to PWM dimming control signal.

In one embodiment, as shown in accompanying drawing 2C, the PWM dimming control signal exported by source selector is as input, charged to electric capacity C1 by the combination of diode D1 and resistance R1, when PWM dimming control signal is zero potential, electric capacity C1 discharges to resistance R2, because which form voltage integrating meter circuit, select longer R1/C1/R2 time constant, the voltage at electric capacity C1 two ends is directly proportional to the pulse duration of inputted PWM dimming control signal, the longer then voltage of pulse duration is higher, and the shorter then voltage of pulse duration is lower.The voltage of electric capacity C1 is exaggerated into the output voltage of 0 ~ 10V by transistor TR1, TR2, and is connected to lead-out terminal by resistance R7 after electric capacity C2 smooth waveform, exports the stable DC level dimming control signal for being directly proportional to pulse duration.

Thus, by electronic controller 102, achieve the control signal based on outside input different modes, based on programmable pre-set programs, produce predetermined with pulse duration colour temperature control signal and DC level dimming control signal.

Described programmable pre-set programs is set in advance in described miniature control unit when can dispatch from the factory.Further, programming amendment or upgrading can be carried out according to the needs of different performances.

Below by the implementation based on different user's external input control signal, set forth the different enforcement structure of the application.

implement structure I

The first showing according to an embodiment of the application of Fig. 3 specifically implements structure.In Fig. 3, parts same or analogous with Fig. 1 will adopt identical title and Reference numeral, and are not repeated at this.

The user outside that Fig. 3 adopts is input as wall surface switch.Wall surface switch is one of conventional control device of this area, can switch between logical (ON) and disconnected (OFF).Wall surface switch can provide the main power source of alternating current AC form to input.Fig. 3 comprises AC-DC supply convertor, is coupled to wall surface switch, is supplied to electronic controller 102 for the main power source of input input (AC electric current) being converted to DC input.Simultaneously, based on user to the switching of the ON/OFF state of wall surface switch (such as, disconnected OFF is switched to from logical ON, be switched to again logical ON subsequently), AC-DC supply convertor is based on the switching of the on/off state of described wall surface switch, generate main switch and detect input signal, be supplied to the MCU in electronic controller 102.Now, colour temperature control input end and the brightness adjustment control input of electronic controller 102 are merged into one, namely for receiving this main switch detection signal.Meanwhile, main power source input is also supplied to high color temperature variable output constant current source 104 and low variable color temperature output constant current source 106 by wall surface switch.

Thus, based on the switching of user to the ON/OFF of wall surface switch, provide periodic on/off form (such as, ON-OFF-ON is one group, indicate first group of preset state) control inputs, detect form instruction MCU, the MCU of input signal based on this with main switch, export different inside PWM colour temperature control signals and inner PWM dimming control signal to PWM source selector.

What adopt here is the inner mode inputting PWM colour temperature control signal, then PWM source selector is set up (such as, Default Value, or erecting bed is arranged) for selecting colour temperature and the brightness adjustment control input signal of the PWM form of inner input, provide it to synchronous generator, PWM to pulse duration processing unit and PWM voltage integrator.Foregoing, synchronous generator provides the PWM synchronizing signal of 50% duty ratio (also can not use synchronous generator and directly change the PWM synchronizing signal being exported 50% duty ratio by MCU), and PWM is to the PWM synchronizing signal of pulse duration processing unit based on this 50% duty ratio and the colour temperature input control signal of the PWM form inputted, produce corresponding pulse width control signal, PWM voltage integrator produces the stable DC dimming control signal be directly proportional to pulse duration, both are supplied to variable output constant current source 104 in the lump, 106, variable output constant current source 104, 106 and then export different DC electric currents and export high color temperature LED illuminator and low colour temperature LED illuminator to.

Following table 1 shows the exemplary relationship of state of a control and output:

Table 1

Switching-on and switching-off state	Export colour temperature (exemplary values)	Export lumen grade
			Disconnected	Inapplicable	Close, no-output
Logical	4500K	100% exports
			On-off-Tong 1	6500K	50% exports
On-off-Tong 2	3000K	50% exports
			On-off-Tong 3	2000K	25% exports

For example, when main switch disconnects, no-output, when main switch engages, combination colour temperature exports as 4500K, combination brightness exports as full scale, and when main switch break-make leads to one time, combination colour temperature exports as 6500K, it is 50% that combination brightness exports, when main switch break-make leads to secondary, combination colour temperature exports as 3000K, and it is 50% that combination brightness exports.When main switch break-make leads to three times, combination colour temperature exports as 2000K, and combination brightness output is 25%.

implement structure I I

Fig. 4 shows and specifically implements structure according to the second of an embodiment of the application.In Fig. 4, parts same or analogous with Fig. 1 will adopt identical title and Reference numeral, and are not repeated at this.

The user outside that Fig. 4 adopts is input as the signal input of knob.Knob can be arranged on (as shown in the figure) on metope, or adopts the mode (direct panel input etc., not shown) of numeral input.In this way, can directly by voltage format (such as, colour temperature control inputs 0-10V) and brightness adjustment control input are supplied to electronic controller 102, now, namely the colour temperature control input end of electronic controller 102 and brightness adjustment control input are coupled respectively to colour temperature control inputs and the brightness adjustment control input of DC voltage form.And the MCU be supplied to further in Fig. 2.Fig. 4 comprises AC-DC supply convertor, is coupled to main power source input, is supplied to electronic controller 102 for the input of the main power source of input is converted to DC input.Meanwhile, additionally provide main power source in Fig. 4 and input to variable output constant current source 104,106.

MCU in Fig. 2, based on the signal of 0-10V, produces corresponding inner PWM colour temperature control signal and inner PWM dimming control signal is supplied to PWM source selector.Here same employing is internal type, then PWM source selector is set up (such as, Default Value, or erecting bed is arranged) for selecting colour temperature and the brightness adjustment control input signal of the PWM form of inner input, provide it to synchronous generator, PWM to pulse duration processing unit and PWM voltage integrator.Foregoing, synchronous generator provides the PWM synchronizing signal of 50% duty ratio (also can not use synchronous generator and directly change the PWM synchronizing signal being exported 50% duty ratio by MCU), and PWM is to the PWM synchronizing signal of pulse duration processing unit based on this 50% duty ratio and the colour temperature input control signal of the PWM form inputted, produce corresponding pulse width control signal, PWM voltage integrator produces the stable DC dimming control signal be directly proportional to pulse duration, both are supplied to variable output constant current source 104 in the lump, 106, variable output constant current source 104, 106 and then export different DC electric currents and export high color temperature LED illuminator and low colour temperature LED illuminator to.

Following table 2 shows the exemplary relationship of state of a control and output:

Table 2

Because colour temperature control inputs and brightness adjustment control input adopt the form of the DC voltage level of 0-10V, more fine and smooth output classification therefore can be provided.Such as, when brightness adjustment control is input as 0V, think do not have brightness to export, therefore no matter colour temperature control inputs is how many, does not all export.In another kind control situation, when colour temperature control inputs is 7V, when brightness adjustment control is input as 5V, combination colour temperature exports as high color temperature (5500K), but because (namely brightness adjustment control is input as 5V, think that user needs half brightness), then what high color temperature LED illuminator and low colour temperature LED illuminator all exported is half-light (dimming output).When brightness adjustment control is input as 10V, think that user needs entire bright degree, then control high color temperature LED illuminator and low colour temperature LED illuminator respectively according to the rank (3V, 5V, 7V, 10V) of colour temperature control inputs and export half-light or light.

implement structure III

Fig. 5 shows and specifically implements structure according to the third of an embodiment of the application.In Fig. 5, parts same or analogous with Fig. 1 will adopt identical title and Reference numeral, and are not repeated at this.

The user outside that Fig. 5 adopts is input as the signal input of wireless mode.User wirelessly can provide colour temperature control inputs signal and brightness adjustment control input signal to electronic controller 102 by control appliances such as smart mobile phone, remote controller, remote computers, the system of Fig. 5 further provides wireless antenna for receiving the control inputs signal of wireless mode, and includes the wireless module being coupled to wireless antenna and electronic controller 102.Wireless module processes the control inputs signal received and identifies, the colour temperature and the brightness adjustment control input signal that produce PWM form are supplied to electronic controller 102.Colour temperature control input end and the brightness adjustment control input of electronic controller 102 are now coupled respectively to wireless module, receive colour temperature and the brightness adjustment control input signal of said PWM form, and further around the MCU in Fig. 2, be directly supplied to PWM source selector as the colour temperature of PWM form of outside input and brightness adjustment control input signal.The control inputs signal of PWM form can come colour temperature and the light modulation of indicating user expectation by duty ratio.Equally, Fig. 5 comprises AC-DC supply convertor, is coupled to main power source input, is supplied to electronic controller 102 and wireless module for the input of the main power source of input is converted to DC input.Additionally provide main power source in Fig. 5 and input to variable output constant current source 104,106.

In the enforcement structure of Fig. 5, owing to having walked around MCU, PWM source selector will be set up (such as, Default Value, or erecting bed is arranged) for selecting colour temperature and the brightness adjustment control input signal of the PWM form of outside input, provide it to synchronous generator, PWM to pulse duration processing unit and PWM voltage integrator.Foregoing, synchronous generator provides the PWM synchronizing signal of 50% duty ratio, and PWM is to the PWM synchronizing signal of pulse duration processing unit based on this 50% duty ratio and the colour temperature input control signal of the PWM form inputted, produce corresponding pulse width control signal, PWM voltage integrator produces the stable DC control signal be directly proportional to pulse duration, both are supplied to variable output constant current source 104,106 in the lump, variable output constant current source 104,106 and then export different DC electric currents and export high color temperature LED illuminator and low colour temperature LED illuminator to.

Following table 3 shows the exemplary relationship of state of a control and output:

Table 3

Colour temperature control inputs and brightness adjustment control input adopt the form of wireless signal, and the percentage of the duty ratio of pwm signal can be adopted to be used as controlling mark.At this moment, concrete program can be identical with the table 2 of execution mode II, just adopts the percentage signal of pwm signal to instead of the signal of voltage level form.Such as, be 7V corresponding to DC colour temperature control inputs in table 2, DC brightness adjustment control is input as 5V, combination colour temperature exports the situation for high color temperature (5500K), PWM colour temperature control inputs is 70% duty ratio as used herein, brightness adjustment control is input as 50% duty ratio, and it is still high color temperature (5500K) that combination colour temperature exports.Other situations tiredly one by one to be stated at this.

implement structure I V

Fig. 6 shows and specifically implements structure according to the 4th kind of the embodiment of the application.In Fig. 6, parts same or analogous with Fig. 1 will adopt identical title and Reference numeral, and are not repeated at this.

The general principle that Fig. 6 adopts is identical with Fig. 5.Difference is, the wireless module of Fig. 6 has MCU function further, and it includes the microprocessor with real-time clock.This microprocessor is communicated by the control appliance of wireless antenna and user (smart mobile phone, remote controller, remote computer, etc.), obtains the time-based control table of user.This control table can be user on the control device self-defining for be defined in every day different particular point in time time need the colour temperature taked and dimming control requests, and send to wireless module by wireless signal.After obtaining control table, the microprocessor of wireless module just stores this control table, and according to the requirement in control table, export corresponding colour temperature control inputs signal and brightness adjustment control input signal (being PWM form equally) when particular point in time arrives to electronic controller 102.Equally, Fig. 6 comprises AC-DC supply convertor, is coupled to main power source input, is supplied to electronic controller 102 and this has the wireless module of MCU function for the input of the main power source of input being converted to DC input.Additionally provide main power source in Fig. 6 and input to variable output constant current source 104,106.

Identical with the enforcement structure of Fig. 5, PWM source selector in electronic controller 102, synchronous generator, PWM are to pulse duration processing unit and the cooperation of PWM voltage integrator, the colour temperature control inputs signal of the PWM form provided based on wireless module and brightness adjustment control input signal, produce corresponding pulse width control signal and DC dimming control signal as previously mentioned to variable output constant current source 104,106, and then export different DC electric currents and export high color temperature LED illuminator and low colour temperature LED illuminator to.

User can use its wireless device to upgrade, deletes, rebuild its control table, and is resend to wireless module for performing by wireless signal.

Following table 4 shows the exemplary relationship of state of a control and output:

Table 4

Table 4 is examples, shows in the colour temperature of the office space different time points of a day and brightness demand.Wherein, for example, in the operating time (9 .-12 point) in the morning, sunlight is strong, and colour temperature requires that brightness requirement is high, the operating time (13 .-18 point) in the afternoon, uses high color temperature after lunch for middle height, promotes being absorbed in of employee.Afterwards, followed by sunlight dimmed, colour temperature requires soft (lower).At noon (12 .-13 point), staff eats out or lunch break, does not need operating illumination, and therefore colour temperature requires lower, and brightness requirement is lower.In night (18 .-18 30 minutes), staff leaves the post gradually, does not need operating illumination, and therefore colour temperature requires lower, but needs basic brightness.At night (18: 30 assign at 8: 30 next day), illumination is closed, and does not export.Although show final colour temperature and brightness output with pre-set programs tableau format, but electronic controller 102 remains and operates based on the colour temperature control inputs of PWM form and brightness adjustment control input, and PWM format conversion is pulse duration and DC control signal by the mode identical with the table 3 of Fig. 5 inputs to variable output constant current source 104,106, and then exports different DC electric currents and export high color temperature LED illuminator and low colour temperature LED illuminator to.

implement structure V

Fig. 7 shows and specifically implements structure according to the 5th kind of the embodiment of the application.In Fig. 7, parts same or analogous with Fig. 1 will adopt identical title and Reference numeral, and are not repeated at this.

The general principle that Fig. 7 adopts is identical with Fig. 4 with structure.Difference is, electronic controller 102 in Fig. 7 comprises digital Lighting control input (i.e. the digital lighting control signal input of miniature control unit wherein), be coupled to external digital lighting control circuit, for receiving the digital lighting control inputs signal of user outside input.The control inputs signal of the various digital dimming schemes that digital lighting control inputs signal can be commonly used according to this area.Such as, digital addressable lighting interface (DALI), LED digital dimming scheme (DLT), etc.In this way, instead of and colour temperature control inputs and brightness adjustment control input are provided respectively, but directly the illumination control signal of the number format of single ended input is supplied to electronic controller 102, and be supplied to the MCU in Fig. 2 further, be used to indicate the information of colour temperature control and brightness adjustment control.Equally, additionally provide main power source in Fig. 7 and input to electronic controller 102 and variable output constant current source 104,106.

MCU in Fig. 7 utilizes the handling procedure preset, the Lighting control input signal of based single number format, according to known DALI, control specification in the number format such as DLT illumination international standard carries out form decoding, and produces corresponding inner PWM colour temperature control signal and inner PWM dimming control signal to PWM source selector from decoded information.

What still adopt here is the inner mode inputted, then PWM source selector is set up (such as, Default Value, or erecting bed is arranged) for selecting colour temperature and the brightness adjustment control input signal of the PWM form of inner input, provide it to synchronous generator, PWM to pulse duration processing unit and PWM voltage integrator.Foregoing, synchronous generator provides the PWM synchronizing signal of 50% duty ratio (also can not use synchronous generator and directly change the PWM synchronizing signal being exported 50% duty ratio by MCU), and PWM is to the PWM synchronizing signal of pulse duration processing unit based on this 50% duty ratio and the colour temperature control inputs signal of the PWM form inputted, produce corresponding pulse width control signal, PWM voltage integrator produces the stable DC dimming control signal be directly proportional to pulse duration, both are supplied to variable output constant current source 104 in the lump, 106, variable output constant current source 104, 106 and then export different DC electric currents and export high color temperature LED illuminator and low colour temperature LED illuminator to.

Following reference diagram 8, Fig. 8 shows the flow chart of the brightness adjustment control process of an embodiment according to the application.

Whole flow process is from frame 800, and LED starts.At frame 802, enable initial work state, default colour temperature and brightness effect are provided, this initial work state is that LED is set in advance in electronic controller 102 by manufacturer when dispatching from the factory, provide multiple different initialized mode of operation, to meet the needs of different user, can be one of following: what preset is minimum operating state in conjunction with colour temperature and lumen, the effect that namely colour temperature/brightness is minimum; What preset is the highest operating state in conjunction with colour temperature and lumen, the effect that namely colour temperature/brightness is the highest; The last operating state in conjunction with colour temperature and lumen when previous LED is closed.Subsequently, proceed to frame 804, remain on current mode of operation, current mode of operation can be the mode of operation indicated in initial work state; Until diamond block 806, (input mode of signal can with reference to accompanying drawing 3-6 to judge whether to receive colour temperature control inputs signal and brightness adjustment control input signal, select inner input or outside input), if not (N), then continue to get back to frame 804 to remain on current mode of operation, and advance to frame 808; If (Y), then the handling procedure that basis is preset in frame 807, with reference to received colour temperature control inputs signal and brightness adjustment control input signal, arranges new mode of operation.New mode of operation can be different output colour temperature shown by reference table 1-4 and export lumen grade.Then, frame 804 is got back to under remaining on current newly-installed mode of operation.Advance to frame 808.In block 808 by electronic controller 102 according to set mode of operation, in conjunction with implementing structure I to the mode of IV, produce corresponding pulse width control signal and DC control signal to variable output constant current source 104,106.And then then proceeding to frame 810, variable output constant current source 104,106 exports DC electric current respectively and exports high color temperature LED illuminator and low colour temperature LED illuminator to.Next proceed to frame 812, high color temperature LED illuminator and low colour temperature LED illuminator export according to the DC electric current received carries out luminescence.Proceed to diamond 814 subsequently, judge whether power-off, if power-off, then in the whole LED shutdown of frame 816, otherwise high color temperature LED illuminator and low colour temperature LED illuminator keep output state constant, and get back to frame 804.

Based on above many aspects, the LED of the adjusting device to LED lamp that the application provides and this device of use has following outstanding advantages:

One, the application uses LED chip, cheap, efficient, long service life and energy-conserving and environment-protective;

Two, the application's structure is simple, namely the gentle brightness of final combined color being achieved multiple different stage by single electronic controller is exported, and the maximum output that can the LED strip of one group of colour temperature be had at least to provide in all output colour temperature states, substantially increase the utilance of LED and overall efficiency.;

Three, the application can control according to multiple different input mode, meets the various demands of terminal consumer or commercial location;

Four, the application can realize the multiple programs preset, realizes the automatic control of colour temperature and brightness according to different particular point in times.

Those skilled in the art can also recognize, can carry out various modifications and variations to the above-mentioned exemplary embodiment of the application and not depart from the spirit and scope of the application.Therefore, be intended to that the application is covered and drop on the amendment to the application within the scope of appended claims and equivalent arrangements thereof and modification.

Claims

1. an emission control device, comprising:

Electronic controller, there is colour temperature control input end and brightness adjustment control input, be respectively used to the colour temperature control inputs signal and the brightness adjustment control input signal that receive outside input, and there is the first colour temperature control output end, second colour temperature control output end, and brightness adjustment control output, for the described colour temperature control inputs signal that inputs based on outside and described brightness adjustment control input signal, the first colour temperature control signal and the second colour temperature control signal is exported respectively to regulate the colour temperature of illumination effect according to the handling procedure preset, and export dimming control signal to carry out light modulation,

First variable output constant current source, comprising:

First colour temperature control input end, is coupled to the first colour temperature control output end of described electronic controller, for receiving the first colour temperature control signal,

Brightness adjustment control input, is coupled to the brightness adjustment control output of described electronic controller, for receiving dimming control signal,

First output, provides the first electric current to export;

Second variable output constant current source, comprising:

Second colour temperature control input end, is coupled to the second colour temperature control output end of described electronic controller, for receiving the second colour temperature control signal,

Second output, provides the second electric current to export;

Wherein, the size that described first variable output constant current source regulates described first electric current to export according to described first colour temperature control signal, and regulate described first electric current to export the ratio of size according to described both dimming control signals, the size that described second variable output constant current source regulates described second electric current to export according to the second colour temperature control signal, and regulate described second electric current to export the ratio of size according to described both dimming control signals, the size exported by the second electric current of the first electric current output and described second variable output constant current source that control described first variable output constant current source and ratio regulate the illumination effect of colour temperature and/or light modulation.

2. emission control device as claimed in claim 1, it is characterized in that, described first colour temperature control signal is the first pulse duration colour temperature control signal, and described second colour temperature control signal is the second pulse duration colour temperature control signal, and described dimming control signal is DC level dimming control signal.

3. emission control device as claimed in claim 2, it is characterized in that, described electronic controller comprises:

Miniature control unit, store the program able to programme preset, and comprise multiple IO passage, one or more for receiving in following input control signal respectively: main switch detects input signal, the control inputs signal of digital dimming scheme, the colour temperature control inputs signal of DC voltage form, the brightness adjustment control input signal of DC voltage form, described miniature control unit, based on the program of above-mentioned input control signal and internal preset, exports the PWM synchronizing signal of inner PWM colour temperature control signal, inner PWM dimming control signal, 50% duty ratio;

PWM source selector, be coupled to the inside PWM colour temperature control signal output of described miniature control unit and inner PWM dimming control signal output, and be coupled and receive outside PWM colour temperature control inputs signal and outside PWM brightness adjustment control input signal, for the inside PWM colour temperature control signal and the inner PWM dimming control signal that determine to select described miniature control unit to export or select the outside PWM colour temperature control inputs signal of outside input and outside PWM brightness adjustment control input signal, and the outside PWM colour temperature control inputs signal of selected inside PWM colour temperature control signal or outside input is exported toward PWM to pulse duration processing unit as PWM colour temperature control signal, the outside PWM brightness adjustment control input signal of selected inside PWM dimming control signal or outside input is exported toward PWM voltage integrator as PWM dimming control signal,

PWM is to pulse duration processing unit, be coupled to the output of described PWM source selector, for the PWM synchronizing signal based on the PWM colour temperature control signal inputted and 50% duty ratio, produce described first pulse duration colour temperature control signal to described first variable output constant current source, produce described second pulse duration colour temperature control signal to described second variable output constant current source, at any time, one of them of described first pulse duration colour temperature control signal and described second pulse duration colour temperature control signal can be in full scale output state, another then can be controlled between maximum output state and minimum output state,

PWM voltage integrator, be coupled to the output of described PWM source selector, for carrying out integration to the PWM dimming control signal of input, produce the stable DC voltage value be directly proportional to pwm pulse width, be supplied to described first variable output constant current source and described second variable output constant current source as described DC level dimming control signal.

4. emission control device as claimed in claim 3, it is characterized in that, described PWM comprises to pulse duration processing unit:

Inverter, receives the PWM synchronizing signal of described 50% duty ratio, and it is anti-phase, Ti Gong Give first XOR gate (G1);

Described first XOR gate, comprise first input end for receiving the output of described inverter and comprising the second input for receiving described PWM colour temperature control signal, and the output of described inverter and described PWM colour temperature control signal are compared, if the duty ratio of described PWM colour temperature control signal is more than 50%, just can obtain high level output at the output of described first XOR gate, this output signal is provided to the D input of D flip-flop;

Delay line (DL1) and the second XOR gate (G2) form pulse generator, the input of described delay line receives the PWM synchronizing signal of described 50% duty ratio, output second XOR gate described in Bei Ti Gong Give equally of described delay line, the output of the more described delay line of described second XOR gate and the PWM synchronizing signal of described 50% duty ratio, with 0% and 50% two CLK end providing clock pulse signal to arrive described D flip-flop in the PWM cycle;

Described D flip-flop Q, comprise D input, CLK inputs, Q exports and NOT-Q exports, the output of described first XOR gate is coupled in described D input, the output of described second XOR gate is coupled in described CLK input, described Q exports and is coupled to first or door, described NOT-Q exports and is coupled to the 3rd XOR gate (G3), when the duty ratio of described PWM colour temperature control signal is greater than 50%, Q exports the output signal of 50% generation high level before PWM synchronous signal cycle, then after the remainder of PWM synchronous signal cycle, 50% low level is reset to, and when the duty ratio of described PWM colour temperature control signal is less than 50%, Q exported and remain low level on the whole PWM refresh cycle.And the described NOT-Q of D flip-flop exports and described Q exports anti-phase;

Described first or door receive described Q and export and described PWM colour temperature control signal, carry out logic OR operation and its output is coupled to the first buffer, the output of described first buffer provides described first pulse duration colour temperature control signal;

Described 3rd XOR gate receives described NOT-Q and exports and described PWM colour temperature control signal, and output is coupled to the second buffer, and the output of described second buffer provides described second pulse duration colour temperature control signal;

When the duty ratio of PWM colour temperature control inputs signal is less than 50%, described first or the output of door make described first pulse duration colour temperature control signal follow described PWM colour temperature control signal and change, and the NOT-Q output of described D flip-flop is in high level, the output of described 3rd XOR gate makes described second pulse duration colour temperature control signal become high level signal;

When the duty ratio of described PWM colour temperature control signal is greater than 50%, described first or the output of the door high level signal that makes described first pulse duration colour temperature control signal select the Q of described D flip-flop to export, and the NOT-Q output of described D flip-flop is in low level, the output of described 3rd XOR gate makes described second pulse duration colour temperature control signal follow described PWM colour temperature control signal and change;

Thus, one of them making described first pulse duration colour temperature control signal and described second pulse duration colour temperature control signal can be in full scale output state, and another then can be controlled between maximum output state and minimum output state.

5. emission control device as claimed in claim 4, is characterized in that, also comprise:

Synchronous generator, be coupled to described miniature control unit and described PWM source selector, when determining to select the outside PWM colour temperature control inputs signal from outside input, monitor and utilize the refresh rate of described outside PWM colour temperature control inputs signal, produce the PWM synchronizing signal of 50% duty ratio, the PWM synchronizing signal of 50% duty ratio provided by described miniature control unit is provided, and exports to described PWM to pulse duration processing unit.

6. emission control device as claimed in claim 4, is characterized in that,

Wherein, when needing colour temperature and the light modulation of varying level, described first pulse duration colour temperature control signal is set to provide the pulse duration of the first ratio to determine the size that described first electric current exports, described second pulse duration colour temperature control signal is set to provide the pulse duration of the second ratio to determine the size that described second electric current exports, described DC level dimming control signal is set to allow described first variable output constant current source to be exported by described first electric current and controls in the first percentage range of the determined size of pulse duration by described first ratio, and allow described second variable output constant current source to control in the second percentage range of the determined size of pulse duration by described second ratio by described second electric current output.

7. emission control device as claimed in claim 6, is characterized in that, comprise following working condition:

When needs high color temperature exports, described first pulse duration colour temperature control signal is set to provide the pulse duration of about 100%, and described second pulse duration colour temperature control signal is set to provide the pulse duration of about 2%; Coordinate the scope of described DC level dimming control signal 0%-100%, it is 0%-about 100% that described first electric current in described first variable output constant current source exports, and the described second electric current output in described second variable output constant current source is 0%-about 2%;

When the low colour temperature of needs exports, described first pulse duration colour temperature control signal is set to provide the pulse duration of about 2%, and described second pulse duration colour temperature control signal is set to provide the pulse duration of about 100%; Coordinate the scope of described DC level dimming control signal 0%-100%, it is 0%-about 2% that described first electric current in described first variable output constant current source exports, and the described second electric current output in described second variable output constant current source is 0%-about 100%;

When needing relatively high colour temperature to export, described first pulse duration colour temperature control signal is set to provide the pulse duration of about 100%, and described second pulse duration colour temperature control signal is set to the pulse duration providing 20%; Coordinate the scope of described DC level dimming control signal 0%-100%, it is 0%-about 100% that described first electric current in described first variable output constant current source exports, and described second electric current in described second variable output constant current source exports as 0%-20%;

When needing relatively low colour temperature to export, described first pulse duration colour temperature control signal is set to the pulse duration providing 10%, and described second pulse duration colour temperature control signal is set to provide the pulse duration of about 100%; Coordinate the scope of described DC level dimming control signal 0%-100%, it is 0%-about 100% that described first electric current in described first variable output constant current source described second electric current exported as 0%-10% and described second variable output constant current source exports.

8. emission control device as claimed in claim 6, it is characterized in that, comprise: AC-DC supply convertor, the colour temperature control input end of described electronic controller and brightness adjustment control input are coupled respectively to colour temperature control input end and the brightness adjustment control input of DC voltage form, and described AC-DC supply convertor is coupled to wall surface switch further;

Described wall surface switch can switch between logical ON and disconnected OFF, and main power source input is supplied to described AC-DC supply convertor, described first variable output constant current source and described second variable output constant current source;

The main power source input that described wall surface switch inputs by described AC-DC supply convertor is converted to DC input power supply to electronic controller, and the switching of on/off state based on described wall surface switch, generate main switch and detect input signal, be supplied to the described colour temperature control input end of described electronic controller and described brightness adjustment control input

Described electronic controller provides the output of described first colour temperature control signal, described second colour temperature control signal and described dimming control signal according to the handling procedure preset.

9. emission control device as claimed in claim 6, it is characterized in that, comprise: AC-DC supply convertor, the colour temperature control input end of described electronic controller and brightness adjustment control input are coupled respectively to colour temperature control inputs and the brightness adjustment control input of DC voltage form, and described electronic controller is coupled to AC-DC supply convertor;

Main power source input is provided to described AC-DC supply convertor, described first variable output constant current source and described second variable output constant current source;

Described main power source input is converted to DC input and is supplied to electronic controller by described AC-DC supply convertor;

The colour temperature control input end of described DC voltage form and brightness adjustment control input provide the colour temperature control inputs signal of DC voltage form and the brightness adjustment control input signal of DC voltage form to the described miniature control unit in described electronic controller, make described electronic controller according to the handling procedure preset to provide the output of described first colour temperature control signal, described second colour temperature control signal and described dimming control signal.

10. emission control device as claimed in claim 6, is characterized in that, also comprise:

Wireless module, be coupled to described electronic controller, and be coupled to wireless antenna, for wirelessly going to receive colour temperature control inputs signal and brightness adjustment control input signal from the control appliance of user by described wireless antenna, carry out processing and identifying, produce the colour temperature control inputs signal of PWM form and the brightness adjustment control input signal of PWM form;

AC-DC supply convertor, described electronic controller is coupled to described AC-DC supply convertor;

Main power source input provides power supply to described AC-DC supply convertor, described first variable output constant current source and described second variable output constant current source;

Described main power source input is converted to DC input and is supplied to electronic controller and described wireless module by described AC-DC supply convertor;

Colour temperature control input end and the brightness adjustment control input of described electronic controller are coupled respectively to wireless module, receive the colour temperature control inputs signal of described PWM form and the brightness adjustment control input signal of PWM form, and be directly supplied to PWM source selector further around described miniature control unit, make described electronic controller according to the handling procedure preset to provide the output of described first colour temperature control signal, described second colour temperature control signal and described dimming control signal.

11. emission control devices as claimed in claim 6, is characterized in that, also comprise:

There is the wireless module of MCU function, be coupled to described electronic controller, and be coupled to wireless antenna, comprise: with the microprocessor of real-time clock, this microprocessor described is communicated with the control appliance of user by wireless antenna, obtain the time-based control table of user, described control table can be user-defined for be defined in every day different particular point in time time need the colour temperature taked and dimming control requests, described microprocessor stores described control table, and according to the requirement in control table, the colour temperature control inputs signal of corresponding PWM form and the brightness adjustment control input signal extremely described electronic controller of PWM form is exported when particular point in time arrives,

Described main power source input is converted to DC input and is supplied to electronic controller and the described wireless module with MCU function by described AC-DC supply convertor;

There is described in the colour temperature control input end of described electronic controller and brightness adjustment control input are coupled respectively to the wireless module of MCU function, receive the colour temperature control inputs signal of described PWM form and the brightness adjustment control input signal of described PWM form, and be directly supplied to PWM source selector further around described miniature control unit, make described electronic controller according to the handling procedure preset to provide the output of described first colour temperature control signal, described second colour temperature control signal and described dimming control signal.

12. emission control devices as claimed in claim 6, is characterized in that, comprising: AC-DC supply convertor, be coupled to described electronic controller,

Wherein said electronic controller comprises digital Lighting control input, is coupled to external digital lighting control circuit, for receiving the digital lighting control inputs signal of outside input;

Described digital lighting control inputs signal is provided to the described miniature control unit in described electronic controller, described miniature control unit, according to the handling procedure program preset, produces based on described digital lighting control inputs signal and provides the output of described first colour temperature control signal, described second colour temperature control signal and described dimming control signal.

13. emission control devices as claimed in claim 6, it is characterized in that, described default handling procedure is programmable, and is pre-arranged when dispatching from the factory in described miniature control unit, and can carry out programming amendment or upgrading according to the needs of different performances.

14. emission control devices as claimed in claim 6, is characterized in that, described first electric current is exported the first group of LED illuminator being supplied to described first output being coupling in described first variable output constant current source by described first variable output constant current source,

Described second electric current is exported the second group of LED illuminator being supplied to described second output being coupling in described second variable output constant current source by described second variable output constant current source;

The colour temperature of described first group of LED illuminator is higher than the colour temperature of described second group of LED illuminator.

15. 1 kinds of luminescent systems, comprising:

Emission control device as described in claim 1-14;

Be coupling in first group of LED illuminator of described first output in described first variable output constant current source, and

Be coupling in second group of LED illuminator of described second output in described second variable output constant current source;

The colour temperature of described first group of LED illuminator organizes the colour temperature of LED illuminator higher than described.

The control method of 16. 1 kinds of luminescent systems, comprising:

Enable initial work state, default colour temperature and brightness effect are provided;

Judge whether to receive colour temperature control inputs signal and brightness adjustment control input signal;

If receive colour temperature control inputs signal and brightness adjustment control input signal, then new mode of operation is set according to the handling procedure preset;

According to set mode of operation, produce corresponding colour temperature control signal and dimming control signal to the first variable output constant current source and the second variable output constant current source;

Based on corresponding colour temperature control signal and dimming control signal, described first variable output constant current source and the second variable output constant current source export the first electric current output respectively and the second electric current exports first group of LED illuminator and second group of LED illuminator to;

Export based on described first electric current and described second electric current output, described first group of LED illuminator and described second group of LED illuminator export according to the DC electric current received carries out luminescence;

The size that wherein said first variable output constant current source regulates described first electric current to export according to described first colour temperature control signal, and regulate described first electric current to export the ratio of size according to described both dimming control signals, the size that described second variable output constant current source regulates described second electric current to export according to the second colour temperature control signal, and regulate described second electric current to export the ratio of size according to described both dimming control signals, regulate colour temperature and/or the light modulation of illumination effect thus.

17. methods as claimed in claim 16, is characterized in that, also comprise:

Judge whether power-off, if power-off, then described luminescent system shutdown, otherwise described first group of LED illuminator and described second group of LED illuminator keep output state constant.

18. methods as claimed in claim 16, it is characterized in that, described default handling procedure is programmable, and be pre-arranged in described miniature control unit when dispatching from the factory, and programming amendment or upgrading can be carried out according to the needs of different performances, described initial work state is set in advance in the electronic controller of luminescent system by manufacturer, and to provide can be one of following initialized mode of operation:

What preset is minimum operating state in conjunction with colour temperature and lumen, the effect that namely colour temperature/brightness is minimum;

What preset is the highest operating state in conjunction with colour temperature and lumen, the effect that namely colour temperature/brightness is the highest;

The last operating state in conjunction with colour temperature and lumen when previous luminescent system is closed.

19. methods as claimed in claim 16, it is characterized in that, judge whether to receive colour temperature control inputs signal and brightness adjustment control input signal comprises: if do not receive colour temperature control inputs signal and brightness adjustment control input signal, then continue to remain on current mode of operation.

20., as the method in claim 16-19 as described in any one, is characterized in that, described method is used to control the luminescent system as shown in claim 15.