CN202435678U - Adjusting circuit for LED light source - Google Patents
Adjusting circuit for LED light source Download PDFInfo
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- CN202435678U CN202435678U CN2012200017954U CN201220001795U CN202435678U CN 202435678 U CN202435678 U CN 202435678U CN 2012200017954 U CN2012200017954 U CN 2012200017954U CN 201220001795 U CN201220001795 U CN 201220001795U CN 202435678 U CN202435678 U CN 202435678U
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Abstract
The utility model discloses an adjusting circuit for an LED light source. The adjusting circuit for the LED light source comprises a centralized controller and an LED driver, wherein the centralized controller receives at least two external adjustment signals, and outputs an adjustment control signal after performing centralized processing on the external adjustment signals and/or internally generated internal adjustment signals; the LED driver is provided with a reserved dimming line, receives the adjustment control signal from the centralized controller, adjusts the current output to an LED load, and is connected between a power supply and the LED load; and the output end of the centralized controller is connected with a standard dimming interface (namely the reserved dimming line) of the LED driver. By adopting the embodiments of the utility model, the LED light source can respond to various adjustment signals at the same time, and intelligent adjustment of the LED light source is realized.
Description
Technical field
The utility model relates to the dimming control technique field, particularly relates to a kind of regulating circuit of LED source.
Background technology
LED (Light Emitting Diode, light-emitting diode) light source has the advantage that the life-span is long, light efficiency is high, can practice thrift a large amount of electric energy.And the driving of led light source and control mode are simple, are convenient to the flexible luminosity, are particularly suitable for the application scenario that some need adjust luminosity according to condition of different, such as public arena and interior lighting systems such as street lamp, squares.When the brightness of illumination that does not need 100%, suitable reduction brightness can be saved much electricity.
With reference to Fig. 1, be the light modulation scheme sketch map of the existing led light source of using always.As shown in Figure 1.Led driver 2a is connected between power supply 1a and the LED load 4a.Dimmer 3a connects the standard dimming interface (being also referred to as the light modulation line) of led driver 2a.Said dimmer 3a receives the conditioning signal of user's input, exports corresponding dimming control signal to said led driver 2a, regulates the electric current of LED load 4a with this, realizes the brightness adjustment control to LED load 4a.
Existing led light source light modulation scheme, the brightness of led light source can not change brightness because of the difference of situation or respond other conditioning signals only in response to user's conditioning signal.Such as, when led light source during, can not respond to automatically and regulate self brightness at daytime or night as street lamp; Perhaps when led light source is installed in the corridor, can not regulate self light on and off through coming because of whether the people is arranged in the corridor.
It is thus clear that existing scheme can not realize the intelligence of led light source is regulated, existing led light source can not respond multiple conditioning signal simultaneously.
The utility model content
In view of this, the purpose of the utility model is to provide a kind of regulating circuit of LED source, can realize the intelligence of led light source is regulated, and makes led light source can respond multiple conditioning signal simultaneously.
The utility model provides a kind of regulating circuit of LED source, and said regulating circuit comprises:
One is reserved with the light modulation line, and the led driver that changes along with the variation of signal magnitude on the said light modulation line of the size of output current; With,
One receives at least two kinds of external adjustment signals, and after said external adjustment signal and/or the inner internal regulation signal that produces were focused on, the Centralized Controller of control signal was regulated in output;
Said led driver is connected between power supply and the said LED load, and the output of said Centralized Controller is exported the light modulation line that said adjusting controls signal to said led driver, regulates the size of current that said led driver exports the LED load to.
Preferably, said Centralized Controller comprises: priority management module and Executive Module;
Said priority management module comprises:
One receives at least two kinds of external adjustment signals, is the priority unit of said external adjustment signal and/or internal regulation signal allocation corresponding priority level coefficient; With,
The priority factor of a pair of external adjustment signal that receives and/or internal regulation signal compares, and confirms the conditioning signal that priority factor is the highest, and with the priority comparing unit of priority ratio result output;
Said Executive Module comprises:
With each conditioning signal performance element one to one, receive a kind of conditioning signal, said conditioning signal to be handled, output is analogous to the current regulating signal of signal magnitude on the said light modulation line; With,
One receives the conditioning signal of each performance element, according to the priority comparative result of said priority comparing unit output, selects the Coordination Treatment unit of the conditioning signal of a performance element as said adjusting control signal output according to preset rule;
The input of said priority unit receives at least two kinds of external adjustment signals, the input of the said priority comparing unit of output termination; The input of the said Coordination Treatment of the output termination unit of said priority comparing unit;
The input termination one external adjustment signal or an internal regulation signal of said performance element, the input of the said Coordination Treatment of output termination unit; The light modulation line of the said led driver of output termination of said Coordination Treatment unit.
Preferably, said Coordination Treatment unit relatively is received from the relation of the conditioning signal of each performance element, if the relation of each conditioning signal is for repelling each other, the conditioning signal that then output priority is the highest is as said adjusting control signal; If the relation of each conditioning signal is compatible, then under the situation that the conditioning signal of high priority is satisfied, the conditioning signal of output low priority is as said adjusting control signal.
Preferably, said internal regulation signal is the timing dimming signal; The performance element corresponding with said timing dimming signal is with the preset period circulation regularly, when the different time sections of one-period regularly finishes, to trigger first timing unit of the corresponding adjusting control signal of said Centralized Controller output different time sections.
Preferably; Said Centralized Controller also comprises: the conditioning signal that receives a performance element of said Coordination Treatment unit output; After the conditioning signal of said performance element and particular adjustments signal carried out logical operation, as the computing module of said adjusting control signal output.
Preferably; Said computing module comprises: when said particular adjustments signal is the light decay compensating signal; After the conditioning signal of one performance element of said Coordination Treatment unit output multiplied each other with said light decay compensating signal corresponding preset light decay penalty coefficient, first arithmetic element of exporting as said adjusting control signal; Wherein, said light decay penalty coefficient is smaller or equal to 1.
Preferably; Said Centralized Controller also comprises: the accumulative total lighting hours to the LED load is carried out timing, when timing reaches preset timing section, exports a light decay penalty coefficient to said first arithmetic element; And restarting timing, the timing number of times adds 1 second timing unit; Along with the increase of said timing number of times, said light decay penalty coefficient increases.
Preferably; Said computing module also comprises: when said particular adjustments signal is the maximum current set point; After the conditioning signal of one performance element of said Coordination Treatment unit output set multiplication with said maximum current set point corresponding preset maximum current, second arithmetic element of exporting as said adjusting control signal; Wherein, said maximum current is set coefficient smaller or equal to 1.
Preferably, said external adjustment signal is energy-conservation signal, guard signal, dim signal.
Preferably, said regulating circuit also comprises: set the output signal magnitude of the corresponding said performance element of said each conditioning signal difference and/or the setting module of said particular adjustments signal magnitude; The input of each performance element of output termination of said setting module and/or the input of said computing module.
Preferably, the set-up function of said setting module comprises: be set in lowest high-current value under the overheat protector state, set the lowest high-current value under the unmanned sense state in the field of illumination, set the bright scope of constant current in the field of illumination, set maximum output current value that said led driver drives the different LED load, set the light decay penalty coefficient, set timing dimming at the current value of each time period, perhaps set in the current value of default output any one or multiple arbitrarily.
Preferably, the setting means of said setting module for the resistance setting through connecting different resistances, software set, wireless or infrared remote control in setting any one or multiple.
Preferably, said light modulation line is 0 to 10V light modulation line, perhaps is PWM light modulation line
According to the specific embodiment that the utility model provides, the utility model discloses following technique effect:
The regulating circuit of the said led light source of the utility model embodiment through said Centralized Controller, makes the brightness of said LED load to realize multinomial regulatory function in response to all kinds of conditioning signals, has realized thus the intelligence of LED load is regulated.And said circuit structure is simple, and said Centralized Controller and led driver can separately encapsulate, and when any one is damaged in Centralized Controller and the led driver, as long as change the corresponding standard module, makes said circuit maintain easily.
Description of drawings
Fig. 1 is the light modulation scheme sketch map of the existing led light source of using always;
Fig. 2 is the regulating circuit figure of the utility model embodiment one described LED source;
Fig. 3 is first kind of way of realization circuit diagram of the Centralized Controller of the utility model embodiment;
The oscillogram of a kind of timing dimming signal that Fig. 4 provides for the utility model embodiment;
Fig. 5 is second kind of way of realization circuit diagram of the Centralized Controller of the utility model embodiment;
Fig. 6 is the regulating circuit figure of the utility model embodiment two described LED sources;
Fig. 7 is the regulating circuit figure of the utility model embodiment three described LED sources.
Embodiment
For above-mentioned purpose, the feature and advantage that make the utility model can be more obviously understandable, the utility model is done further detailed explanation below in conjunction with accompanying drawing and embodiment.
In view of this, the purpose of the utility model is to provide a kind of regulating circuit of LED source, can realize the intelligence of led light source is regulated, and makes led light source can respond multiple conditioning signal simultaneously.
With reference to Fig. 2, be the regulating circuit figure of the utility model embodiment one described LED source.As shown in Figure 2, said regulating circuit comprises: led driver 20 and Centralized Controller 30.
Wherein, said led driver 20 is reserved with light modulation line (being the standard dimming interface), and the size of its output current changes along with the variation of signal magnitude on the said light modulation line.
Said Centralized Controller 30; Receive at least two kinds of external adjustment signals (shown in S1 to Sn among Fig. 2; N >=2); After said external adjustment signal and/or internal regulation signal focused on, export one the tunnel and regulate control signal, make the output current Io of said led driver 20 can respond all kinds of conditioning signals (said all kinds of conditioning signals comprise said external adjustment signal and/or internal regulation signal) through said light modulation line said led driver 20 extremely.
Said led driver 20 is connected between power supply 10 and the LED load 40; Receive adjusting control signal through the light modulation line from said Centralized Controller 30 outputs; Adjust the output to the electric current I o of said LED load 40, thereby realize brightness adjustment control LED load 40.
Wherein, said external adjustment signal is the conditioning signal that comes from the outside that said Centralized Controller 30 receives; Said internal regulation signal is the conditioning signal that said Centralized Controller 30 inside are provided with in advance.
Need to prove that said Centralized Controller 30 can only be regulated control signal according to the external adjustment signal output that receives; Also can be only according to internal regulation signal output adjusting control signal; Also can comprehensive said external adjustment signal and internal regulation signal output adjusting control signal.
This shows; The regulating circuit of the said led light source of the utility model embodiment; Regulate to control signal on the light modulation line that said led driver 20 reserves through 30 outputs of said Centralized Controller, making that said led driver 20 exports the electric current of LED load 40 to can be in response to all kinds of conditioning signal, and the brightness of promptly said LED load 40 can be in response to all kinds of conditioning signals; Realize multinomial regulatory function, realized thus the intelligence of LED load is regulated.And said circuit structure is simple, and said Centralized Controller and led driver can separately encapsulate, and when any one is damaged in Centralized Controller and the led driver, as long as change the corresponding standard module, makes said circuit maintain easily.
Said led driver can adopt the driver that has the standard dimming interface; Be led driver and be reserved with the light modulation line; This just requires the inner circuit design of said led driver, make the size of its output current can follow said light modulation line attend institute's plus signal size variation and change.When the user only needs conventional dimming function, can direct external conventional dimmer; When the user need realize the multinomial regulatory function to the LED load; Only needing output with said Centralized Controller be connected on the light modulation line of said led driver gets final product; Make led driver have more versatility; For the manufacturer of led driver, the R&D costs of the led driver that possesses various functions have been reduced.In addition, the regulating circuit of said led light source, its interface is simple, is easy to standardization.
Further, the output of said Centralized Controller can connect a plurality of led drivers, makes said Centralized Controller can unify to regulate the output current of a plurality of led drivers, realizes the unified brightness adjustment control to a plurality of LED loads.
With reference to Fig. 3, be first kind of way of realization circuit diagram of the described Centralized Controller of the utility model embodiment.As shown in Figure 3, said Centralized Controller 30 can comprise: priority management module 301 and Executive Module 302.
Wherein, said priority management module 301 comprises: priority unit 3011 and priority comparing unit 3012.
Said Executive Module 302 comprises: with all kinds of conditioning signals performance element 3021 and Coordination Treatment unit 3022 one to one.
The input of said priority unit 3011 receives at least two kinds of external adjustment signals, the input of the said priority comparing unit 3012 of its output termination; The input of the said Coordination Treatment of the output termination unit 3022 of said priority comparing unit 3012.
The input termination one external adjustment signal or an internal regulation signal of said performance element 3021, the input of the said Coordination Treatment of its output termination unit 3022; The light modulation line of the said led driver 20 of output termination of said Coordination Treatment unit 3022.
Said priority unit 3011 is used for receiving at least two kinds of external adjustment signals, for all kinds of conditioning signals (comprising external adjustment signal and/or internal regulation signal) distribute the corresponding priority level coefficient.
Said priority comparing unit 3012; Be used at a time; When having a plurality of conditioning signals to respond; Priority factor to these a plurality of conditioning signals of receiving compares, and confirms the conditioning signal that priority factor is the highest, and exports priority ratio result the Coordination Treatment unit 3022 of said Executive Module 302 to.
Said performance element 3021 is used to receive a kind of conditioning signal, and said conditioning signal is handled, and output is analogous to the current regulating signal of signal magnitude on the said light modulation line.Such as; The conditioning signal that said performance element 3021 is received is infrared dim signal; Said performance element specifically be meant the size that detects this infrared dim signal, and correspondence obtains a current regulating signal to the processing of this infrared dim signal; And the size of this current regulating signal is analogous to the size of signal on the said light modulation line, can directly change the output current of led driver.
Said Coordination Treatment unit 3022; Receive the conditioning signal of each performance element 3021 output; The priority comparative result of priority comparing unit 3012 outputs of the said priority management module 301 of foundation; Select the conditioning signal of a certain performance element 3021 outputs to control signal to said led driver 20 according to preset rule, make the output current Io of said led driver 20 can take the lead in responding the highest conditioning signal of priority as said adjusting.
Need to prove; The regulating circuit of the said led light source of the utility model embodiment; In order to make the output current of led driver can respond multiple conditioning signal, said preset rule comprises following two: the first, take the lead in responding the highest conditioning signal of priority; The second, all kinds of conditioning signals of response as much as possible.
Further, said Coordination Treatment unit 3022 is used for relatively being received from the relation of the conditioning signal of each performance element 3021 output, if the relation of each conditioning signal is for repelling each other, the conditioning signal that then output priority is the highest is as said adjusting control signal; If the relation of each conditioning signal is compatible, then under the situation that the conditioning signal of high priority can be satisfied, the conditioning signal of output low priority is as said adjusting control signal.
Describe with concrete example below.
Example 1: suppose that first conditioning signal is infrared dim signal, output current is 25mA behind said first conditioning signal of said led driver 20 responses; Second conditioning signal is the timing dimming signal, and output current is 20mA behind said second conditioning signal of said led driver 20 responses; And the priority of said first conditioning signal is higher than the priority of said second conditioning signal.Then said Coordination Treatment unit 3022 judges that the priority of said first conditioning signal is higher than said second conditioning signal; And two conditioning signals are the relation of repelling each other; Then said Coordination Treatment unit said first conditioning signal of 3022 outputs is to said led driver 20; Make said led driver 20 respond said first conditioning signal, output current is 25mA, meets article one of above-mentioned preset rules.
Example 2: suppose that first conditioning signal is the overheat protector signal, output current is smaller or equal to 30mA behind said first conditioning signal of said led driver 20 responses; Second conditioning signal is infrared dim signal, and output current is 25mA behind said second conditioning signal of said led driver 20 responses; And the priority of said first conditioning signal is higher than the priority of said second conditioning signal.Then said Coordination Treatment unit 3022 judges that the priority of said first conditioning signal is higher than said second conditioning signal; And two conditioning signals are compatibility relation (25mA belongs to 0 and arrives in the scope of 30mA); Then said Coordination Treatment unit said second conditioning signal of 3022 outputs is to said led driver 20; Make said led driver 20 respond said second conditioning signal, output current is 25mA.Then this moment, the output current of said led driver 20 had both responded second conditioning signal, also satisfied the response results of first conditioning signal, met the article one and the second of above-mentioned preset rules.
But, it should be noted that in example 2 prerequisite that responds second conditioning signal is to satisfy the response results of first conditioning signal.Can not satisfy response first conditioning signal if respond second conditioning signal, then still respond first conditioning signal.For example; If in example 2; The priority of second conditioning signal is higher than first conditioning signal; Though this moment, two conditioning signals still were compatibility relations,, therefore still should respond the second higher conditioning signal of priority owing to when response first conditioning signal, not necessarily can satisfy second conditioning signal (output current that for example responds the first conditioning signal led driver 20 is 25mA).
Further, among the utility model embodiment, when said internal regulation signal was the timing dimming signal, the performance element corresponding with said timing dimming signal can be first timing unit.
Said first timing unit; Be used for regularly with the preset period circulation; When the different time sections of one-period regularly finishes, trigger the corresponding adjusting of said Centralized Controller 30 output different time sections and control signal on the light modulation line, regulate the brightness of LED load 40 through led driver 20.Wherein, said preset period can specifically be set according to actual needs.Generally can be set at 1 day (promptly 24 hours).
Be that one day (24 hours) are that example describes with the cycle below.With reference to Fig. 4, the oscillogram of a kind of timing dimming signal that provides for the utility model embodiment.
As shown in Figure 4, when 0＜t＜t1, represent that the bright demand of time period internal reference between morning to daybreak is less in the middle of one day, this moment, led light source was with certain brightness illumination, I=I1; When t1＜t＜t2, representing does not need illumination in the time period on daytime in the middle of one day, and this moment, led light source extinguished I=0; When t2＜t＜t3, represent that back illumination demand is bigger at nightfall in the middle of one day, led light source is with certain brightness illumination, I=I2; And I1＜I2 is arranged, and the brightness of illumination that being for the 3rd time period (back at nightfall) needs is higher than the 1st time period (between morning to daybreak).Be the cycle to carry out loop control with 24 hours then.Wherein, I is the electric current of led light source of flowing through.
With reference to Fig. 5, be second kind of way of realization circuit diagram of the described Centralized Controller of the utility model embodiment.The difference of second kind of way of realization shown in Figure 5 and first kind of way of realization shown in Figure 3 is: said Centralized Controller 30 can also comprise: computing module 303.
Said computing module 303 receives the conditioning signal of a certain performance element 3021 of said Coordination Treatment unit 3022 outputs; After the conditioning signal of said performance element 3021 and particular adjustments signal carried out logical operation, export said led driver 20 to as said adjusting control signal.
Need to prove, not as user's adjusting target, relevant as the said particular adjustments signal of the output current real-time response of said led driver 20, one of which with the user-selected led light source of getting.
Preferably, said computing module 303 can comprise first arithmetic element.
Said first arithmetic element; Be used for when said particular adjustments signal is the light decay compensating signal; After the conditioning signal of a certain performance element 3021 of said Coordination Treatment unit 3022 output multiplied each other with said light decay compensating signal corresponding preset light decay penalty coefficient, export as said adjusting control signal.Wherein, said light decay penalty coefficient is smaller or equal to 1.Need to prove that the size of said preset light decay penalty coefficient can be adjusted through a setup unit.
Further; Comprise on the basis of first arithmetic element that at said computing module 303 said Centralized Controller 30 can also comprise second timing unit, be used for the accumulative total lighting hours of LED load 40 is carried out timing; When timing reaches preset timing section; Export a light decay penalty coefficient to said first arithmetic element, and restart timing, the timing number of times adds 1.Along with the increase of said timing number of times, said light decay penalty coefficient increases.
Need to prove that when said LED loaded on the constant-current source driving, its drive current was constant.But because the aging action of chip and fluorescent material, the luminous flux of said LED load output can descend along with the time, i.e. the light output variable of LED load can decay gradually.It is thus clear that said second timing unit is set in said Centralized Controller 30 can compensate the light decay problem that above-mentioned LED load exists.Such as, suppose to use the initial stage at led light source, bright lamp 1000 hours, said light decay penalty coefficient is 0.7; Next bright lamp 1000 hours, said light decay penalty coefficient is 0.8; And the like.Concrete, in practical application, can be according to the light decay speed of different LED load, preset corresponding light decay penalty coefficient.
Preferably, said computing module 30 can also comprise second arithmetic element.
Said second arithmetic element; Be used for when said particular adjustments signal is the maximum current set point; After the conditioning signal of a certain performance element 3021 of said Coordination Treatment unit 3022 output set multiplication with said maximum current set point corresponding preset maximum current, export as said adjusting control signal.Wherein, said maximum current is set coefficient smaller or equal to 1.
Need to prove that the size that said preset maximum current is set coefficient can be set through a setup unit, sets such as toggle switch, this is in order to make said led driver 20 can adapt to the LED load 40 of different rated current.Such as, driving rated current is the LED load of 300mA, and it is 1 that said maximum current is set coefficient, and when then driving rated current and being the LED load of 150mA, it is 0.5 that said maximum current is set coefficient.
Preferably, based on above-mentioned all embodiment, said external adjustment signal can be various signal of sensor.
Such as, be used for the output signal of the thermistor of sensing LED load temperature; The light sensation signal of sensor that is used for sensitive context brightness; Be used for the induced signal of sensing human body etc.
Signal, physical condition (like light, heat etc.) that various transducers are surveyed, impression is extraneous; And the information of finding out passed to said Centralized Controller 30; Make the regulating circuit of said led light source can control the brightness of said LED load 40 according to the detected object of various transducers; Be the variation that the described regulating circuit of the utility model embodiment can be followed external environment, regulate the brightness of said LED load 40 automatically, realize Based Intelligent Control led light source.
Preferably, based on above-mentioned all embodiment, said external adjustment signal can be energy-conservation signal, guard signal, dim signal etc.
Concrete, when said external adjustment signal was energy-conservation signal, the brightness that said regulating circuit can be controlled said LED load was only satisfied user's primary demand and is got final product, thereby plays energy-conservation effect.
When said external dimmer signal was guard signal, said regulating circuit can reduce the brightness of said LED load, perhaps closed said LED load, and said regulating circuit itself or LED load are played a protective role.
When said external dimmer signal was dim signal, said regulating circuit can be according to user's demand, the brightness of the said LED load of regulated at will.
Need to prove that in practical application, can set the priority of the priority of said energy-conservation signal greater than said dim signal, the priority of said guard signal is greater than the priority of said dim signal.At this moment, the output current of said led driver need take the lead in responding said guard signal and energy-conservation signal.If the priority of the priority of said energy-conservation signal and guard signal less than said dim signal is set, can't play the energy-conservation effect and the function of protection, not only can cause the wasting of resources, also may cause led driver and LED load non-normal working.
Preferably; Based on above-mentioned all embodiment, said external adjustment signal can in human-induced signal, overheat protector signal, the bright control signal of constant current, infrared dim signal, simulation dim signal, data protocol transmission signals, the maximum current setting signal any two or more.
Concrete, when said external adjustment signal was the human-induced signal, if said human-induced signal is expressed as in the area to be illuminated territory people is arranged, said regulating circuit was controlled said LED load with preset brightness illumination; If it is unmanned that said human-induced signal is expressed as in the field of illumination, said regulating circuit is controlled said LED load reduction brightness or is extinguished.
When said external adjustment signal was the overheat protector signal, if the said LED load of said overheat protector signal indication is overheated, said regulating circuit was controlled said LED load reduction brightness or is extinguished.
When said external adjustment signal is the bright control signal of constant current; If the bright control signal of said constant current is expressed as the too dark brightness in the area to be illuminated territory; The brightness that said regulating circuit is controlled said LED load improves, and makes that the brightness in the area to be illuminated territory is maintained within a certain range all the time.
When said external adjustment signal was infrared dim signal, simulation dim signal, data protocol transmission signals, said regulating circuit was controlled the brightness of said LED load and is regulated according to user's demand.Wherein, said simulation dim signal can be 0-10V dim signal, PWM dim signal, copped wave dim signal etc.Said data protocol transmission signals can be DALI protocol transmission signal or DMX512 protocol transmission signal, can also be other light modulation protocol signals.
Preferably, said regulating circuit can also comprise: setting module.The input of each performance element 3021 of output termination of said setting module and/or the input of said transportation module 303 are used to set said all kinds of conditioning signal the output signal magnitude and/or the said particular adjustments signal magnitude of corresponding said performance element respectively.
The set-up function of said setting module can for: be set in lowest high-current value under the overheat protector state, set the lowest high-current value under the unmanned sense state in the field of illumination, set the bright scope of constant current in the field of illumination, set maximum output current value that said led driver 20 drives different LED loads 40, set the light decay penalty coefficient, set timing dimming in the current value of the current value of each time period, the default output of setting any one or multiple arbitrarily.Wherein, the current value of the default output of said setting is meant when the input of said Centralized Controller 30 is not imported the external adjustment signal, sets the output current of said led driver 20, perhaps at Qi Jishi, sets the output current of said led driver 20.
Need to prove that said setting module can be independent of said Centralized Controller 30 and be provided with, and also can be integrated in the said Centralized Controller 30.
Further, the setting means of said setting module can for the resistance setting through connecting different resistances, software set, wireless or infrared remote control in setting any one or multiple.
Need to prove, when setting means is software set, require said Centralized Controller 30 to be provided with DLL.
Based on above-mentioned all embodiment, the utility model also provides a kind of concrete way of realization of regulating circuit of LED source.With reference to Fig. 6, be the regulating circuit figure of the utility model embodiment two described LED sources.
Embodiment illustrated in fig. 6 two said regulating circuits and embodiment illustrated in fig. 2 one difference are: said regulating circuit also comprises input signal modular converter 50.
As shown in Figure 6; The input of the said Centralized Controller 30 of output termination of said input signal modular converter 50; Behind the signal in the effective range that to be used for said at least two kinds of external adjustment conversion of signals be said Centralized Controller 30 inputs, redispatch to said Centralized Controller 30.
For example; When said external adjustment signal derives from inductor; Its signal is general fainter, and, to this type Signal Processing can through said input signal modular converter 50 at first to this type external adjustment signal amplify for the ease of said Centralized Controller 30 this moment.
Based on above-mentioned all embodiment, the utility model also provides a kind of concrete way of realization of regulating circuit of LED source.With reference to Fig. 7, be the regulating circuit figure of the utility model embodiment three described LED sources.
Embodiment illustrated in fig. 7 three said regulating circuits and embodiment illustrated in fig. 2 one difference are: said regulating circuit also comprises output signal conversion module 60.
As shown in Figure 7; Said output signal conversion module 60 is connected between the light modulation line of output and said led driver 20 of said Centralized Controller 30; Be used for converting the adjusting control signal of said Centralized Controller 30 outputs on the light modulation line standard signal, export said led driver 20 again to.
For example, when the light modulation line of said led driver 20 is 0-10V light modulation line,, then can convert pwm signal into the 0-10V level signal through said output signal conversion module 60 if the adjusting control signal of said Centralized Controller 30 outputs is a pwm signal.Concrete, said output signal conversion module 60 can realize through filter circuit.
Certainly, in the regulating circuit of the utility model embodiment four said LED sources, said regulating circuit can both comprise input signal modular converter 50, also comprised output signal conversion module 60.Its concrete implementation is identical with embodiment two and three, repeats no more at this.
Based on above-mentioned all embodiment, said Centralized Controller and said led driver can separately encapsulate.When Centralized Controller is placed on led driver, and be the output of one road signal, for the user with all kinds of conditioning signals set; Make led driver have more versatility; When only needing dimming function, can not connect Centralized Controller, when need realizing multiple function; Can be through the external Centralized Controller of light modulation line, easy to operate.For the manufacturer of led driver, the R&D costs of the led driver that possesses various functions have been reduced.
Preferably, said input signal modular converter 50 and/or output signal conversion module 60 can be packaged together with said Centralized Controller is integrated.
Need to prove that among the utility model embodiment, the light modulation line of said led driver is generally 0-10V light modulation line, also can be PWM light modulation line.Wherein 0-10V light modulation line is meant that led driver can be in response to 0 signal in the 10V magnitude range on its light modulation line.
In addition, each module in the said Centralized Controller can realize through the software programming of adopting central processing unit or single-chip microcomputer, also can realize through digital circuit.
More than to the regulating circuit of a kind of LED source that the utility model provided; Carried out detailed introduction; Used concrete example among this paper the principle and the execution mode of the utility model are set forth, the explanation of above embodiment just is used to help to understand the method and the core concept thereof of the utility model; Simultaneously, for one of ordinary skill in the art, according to the thought of the utility model, part all can change on embodiment and range of application.In sum, this description should not be construed as the restriction to the utility model.
Claims (13)
1. the regulating circuit of a LED source is characterized in that, said regulating circuit comprises:
One is reserved with the light modulation line, and the led driver that changes along with the variation of signal magnitude on the said light modulation line of the size of output current; With,
One receives at least two kinds of external adjustment signals, and after said external adjustment signal and/or the inner internal regulation signal that produces were focused on, the Centralized Controller of control signal was regulated in output;
Said led driver is connected between power supply and the said LED load, and the output of said Centralized Controller is exported the light modulation line that said adjusting controls signal to said led driver, regulates the size of current that said led driver exports the LED load to.
2. circuit according to claim 1 is characterized in that, said Centralized Controller comprises: priority management module and Executive Module;
Said priority management module comprises:
One receives at least two kinds of external adjustment signals, is the priority unit of said external adjustment signal and/or internal regulation signal allocation corresponding priority level coefficient; With,
The priority factor of a pair of external adjustment signal that receives and/or internal regulation signal compares, and confirms the conditioning signal that priority factor is the highest, and with the priority comparing unit of priority ratio result output;
Said Executive Module comprises:
With each conditioning signal performance element one to one, receive a kind of conditioning signal, said conditioning signal to be handled, output is analogous to the current regulating signal of signal magnitude on the said light modulation line; With,
One receives the conditioning signal of each performance element, according to the priority comparative result of said priority comparing unit output, selects the Coordination Treatment unit of the conditioning signal of a performance element as said adjusting control signal output according to preset rule;
The input of said priority unit receives at least two kinds of external adjustment signals, the input of the said priority comparing unit of output termination; The input of the said Coordination Treatment of the output termination unit of said priority comparing unit;
The input termination one external adjustment signal or an internal regulation signal of said performance element, the input of the said Coordination Treatment of output termination unit; The light modulation line of the said led driver of output termination of said Coordination Treatment unit.
3. circuit according to claim 2; It is characterized in that; Said Coordination Treatment unit relatively is received from the relation of the conditioning signal of each performance element, if the relation of each conditioning signal is for repelling each other, the conditioning signal that then output priority is the highest is as said adjusting control signal; If the relation of each conditioning signal is compatible, then under the situation that the conditioning signal of high priority is satisfied, the conditioning signal of output low priority is as said control signal.
4. circuit according to claim 2 is characterized in that, said internal regulation signal is the timing dimming signal;
The performance element corresponding with said timing dimming signal is with the preset period circulation regularly, when the different time sections of one-period regularly finishes, to trigger first timing unit of the corresponding adjusting control signal of said Centralized Controller output different time sections.
5. circuit according to claim 2 is characterized in that, said Centralized Controller also comprises:
Receive the conditioning signal of a performance element of said Coordination Treatment unit output, the conditioning signal and the particular adjustments signal of said performance element carried out logical operation after, the computing module of exporting as said adjusting control signal.
6. circuit according to claim 5 is characterized in that, said computing module comprises:
When said particular adjustments signal is the light decay compensating signal; After the conditioning signal of one performance element of said Coordination Treatment unit output multiplied each other with said light decay compensating signal corresponding preset light decay penalty coefficient, first arithmetic element of exporting as said adjusting control signal; Wherein, said light decay penalty coefficient is smaller or equal to 1.
7. circuit according to claim 6 is characterized in that, said Centralized Controller also comprises:
Accumulative total lighting hours to the LED load is carried out timing, when timing reaches preset timing section, exports a light decay penalty coefficient to said first arithmetic element, and restarts timing, and the timing number of times adds 1 second timing unit; Along with the increase of said timing number of times, said light decay penalty coefficient increases.
8. circuit according to claim 5 is characterized in that, said computing module also comprises:
When said particular adjustments signal is the maximum current set point; After the conditioning signal of one performance element of said Coordination Treatment unit output set multiplication with said maximum current set point corresponding preset maximum current, second arithmetic element of exporting as said adjusting control signal; Wherein, said maximum current is set coefficient smaller or equal to 1.
9. according to each described circuit of claim 1 to 8, it is characterized in that said external adjustment signal is energy-conservation signal, guard signal, dim signal.
10. circuit according to claim 5 is characterized in that, said regulating circuit also comprises:
Set the output signal magnitude of the corresponding said performance element of said each conditioning signal difference and/or the setting module of said particular adjustments signal magnitude;
The input of each performance element of output termination of said setting module and/or the input of said computing module.
11. circuit according to claim 10 is characterized in that, the set-up function of said setting module comprises:
Be set in lowest high-current value under the overheat protector state, set the lowest high-current value under the unmanned sense state in the field of illumination, set the bright scope of constant current in the field of illumination, set maximum output current value that said led driver drives the different LED load, set the light decay penalty coefficient, set timing dimming at the current value of each time period, perhaps set in the current value of default output any one or multiple arbitrarily.
12. according to claim 10 or 11 described circuit, it is characterized in that, the setting means of said setting module for the resistance setting through connecting different resistances, software set, wireless or infrared remote control in setting any one or multiple.
13., it is characterized in that said light modulation line is 0 to 10V light modulation line, perhaps is PWM light modulation line according to each described circuit in the claim 1 to 8,10 and 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200017954U CN202435678U (en) | 2012-01-04 | 2012-01-04 | Adjusting circuit for LED light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200017954U CN202435678U (en) | 2012-01-04 | 2012-01-04 | Adjusting circuit for LED light source |
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| Publication Number | Publication Date |
|---|---|
| CN202435678U true CN202435678U (en) | 2012-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200017954U Expired - Lifetime CN202435678U (en) | 2012-01-04 | 2012-01-04 | Adjusting circuit for LED light source |
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| Country | Link |
|---|---|
| CN (1) | CN202435678U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107926102A (en) * | 2015-09-15 | 2018-04-17 | 伊顿智能动力有限公司 | In response to the output adjustment of the illuminator of environmental condition |
| CN109743827A (en) * | 2019-03-13 | 2019-05-10 | 深圳莱福德科技股份有限公司 | Multifunctional light-regulating circuit |
| CN117835483A (en) * | 2024-03-06 | 2024-04-05 | 珠海市圣昌电子有限公司 | Dimming control circuit supporting multiple dimming modes and dimming method thereof |
-
2012
- 2012-01-04 CN CN2012200017954U patent/CN202435678U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107926102A (en) * | 2015-09-15 | 2018-04-17 | 伊顿智能动力有限公司 | In response to the output adjustment of the illuminator of environmental condition |
| CN107926102B (en) * | 2015-09-15 | 2020-04-10 | 伊顿智能动力有限公司 | Output adjustment of a lighting fixture in response to environmental conditions |
| CN109743827A (en) * | 2019-03-13 | 2019-05-10 | 深圳莱福德科技股份有限公司 | Multifunctional light-regulating circuit |
| CN109743827B (en) * | 2019-03-13 | 2023-08-01 | 深圳莱福德科技股份有限公司 | Multifunctional light modulation circuit |
| CN117835483A (en) * | 2024-03-06 | 2024-04-05 | 珠海市圣昌电子有限公司 | Dimming control circuit supporting multiple dimming modes and dimming method thereof |
| CN117835483B (en) * | 2024-03-06 | 2024-05-28 | 珠海市圣昌电子有限公司 | Dimming control circuit supporting multiple dimming modes and dimming method thereof |
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Address after: Hangzhou City, Zhejiang province 310053 Binjiang District Dongxin Road No. 66 East communication B block 309 Patentee after: LED One (Hangzhou) Co.,Ltd. Address before: Hangzhou City, Zhejiang province 310053 Binjiang District Dongxin Road No. 66 East communication B block 309 Patentee before: Inventronics (Hangzhou) Co., Ltd. |
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Granted publication date: 20120912 |