CN109041325A - LED illumination System, LED colour temperature brightness adjusting method and readable storage medium storing program for executing - Google Patents
LED illumination System, LED colour temperature brightness adjusting method and readable storage medium storing program for executing Download PDFInfo
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- CN109041325A CN109041325A CN201810606998.8A CN201810606998A CN109041325A CN 109041325 A CN109041325 A CN 109041325A CN 201810606998 A CN201810606998 A CN 201810606998A CN 109041325 A CN109041325 A CN 109041325A
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- 230000001105 regulatory effect Effects 0.000 claims description 8
- 238000004590 computer program Methods 0.000 claims description 5
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/20—Controlling the colour of the light
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
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Abstract
The present invention provides a kind of LED illumination System, LED colour temperature brightness adjusting method and readable storage medium storing program for executing, pass through the shared intermediate colour temperature of main line setting in LED illumination System, the method that color (or colour temperature) mixing is carried out to the common mass center of extreme color (or colour temperature) color point coordinates different in LED lamp, rather than simple color mixing method between conventional multiple extreme color point coordinates, logical device is added in control route simultaneously, realize that different-colour adjusting is kept completely separate from different brightness regulations, to improve LED lamp bead utilization rate, save lamp bead quantity, degradation cost, power invariability simultaneously, color conversion is soft and smooth.Color temperature adjustment is mutually indepedent with brightness regulation, keeps brightness control easier, and toning application in addition can be also dimmed with rear end and carries out man-machine interactive operation.
Description
Technical field
The present invention relates to a kind of LED illumination and its adjusting methods, bright more particularly to a kind of LED illumination System and its colour temperature
Spend adjusting method.
Background technique
LED light has relative to conventional incandescent, fluorescent lamp, high-pressure sodium lamp or Metal halogen lamp light efficiency height, and the service life is long, more ring
The advantages that guarantor, has been widely used for the various environment in indoor and outdoor, itself high speed development of one side LED, light efficiency is higher and higher, because
And power saving rate is also higher and higher；Prior other side, LED light are more easier to control, different toning dimming modes, benefit
It is easy to be dissolved into the intelligent lighting of Internet of Things, such as smart city and smart home with certain communication modes.
The intelligence of LED lamp, which is adjusted, to be concentrated on switching, and color or colour temperature and brightness, LED color adjusts and color temperature adjustment
It is much like, it is all the cumulative of the different ratio between color point coordinates different in chromatic diagram.It is all actually in many applications
Such as some street lamps, it is also desirable to which winter occurs warm colour light (low color temperature), and summer occurs cool colour light (high color temperature), that is, two kinds of colour temperatures
Between be adjusted.As long as extreme colour temperature required by two kinds is designed two circuits by conventional method, according to different electric currents come
It adjusts the gray value that two colour temperatures correspond to color point coordinates and realizes some intermediate colour temperature, this practical various traditional scheme are in the process of realization
In, the half that practical lamps and lanterns power output only has all LED lamp beads that can shine, that is, lamp bead utilization rate only have half, this
Different colours match the waste that seems in plant illumination, Landscape Lighting, and cost is very high, as certain lamps and lanterns is needed in 3000K-5000K
Between carry out color temperature adjustment, only half energy is utilized at any time.
In addition, certain lamps and lanterns needs to carry out colour temperature tune between 3000K-5000K if two circuits carry out independent dimming
Section, energy when can make in intermediate color color dot is maximum, so that integral LED lamp bead utilization rate increases, but it is whole
Lamps and lanterns non-constant power during adjusting color can bring the fluctuation of lamps and lanterns luminous flux too big, and color conversion is not soft and smooth, and brightness is not
Unanimously, comfort sense is very poor.
Summary of the invention
In view of the foregoing deficiencies of prior art, the technical problem to be solved in the present invention is that providing a kind of LED illumination
System, LED colour temperature brightness adjusting method and can storage medium, for solving utilization rate in existing LED illumination System color temperature adjustment
The non-constant problem of not high or power, while it is mutually indepedent with brightness regulation to solve color temperature adjustment, and saves lamp bead, is downgraded into
This.
In order to achieve the above objects and other related objects, the present invention provides a kind of LED illumination System, comprising: power module,
First LED light group, the second LED light group, third LED light group, first switch circuit, second switch circuit and communication control module；
Wherein, first LED light group, second LED light group and the third LED light group are different colours；The power supply mould
Block, comprising: control terminal, cathode output end and cathode output end, the cathode output end connect one end of the first LED light group；Institute
The other end for stating the first LED light group is separately connected one end of second LED light group one end and third LED light group；The first switch
Circuit, including connecting the first end of the second LED light group other end, connecting the second end and third of power module cathode output end
End, the third end are used to control the conducting of first end and second end；The second switch circuit, including connection third LED light
4th end of the group other end, the 5th end and the 6th end for connecting power module cathode output end, the 6th end is for controlling the
The conducting at four ends and the 5th end；The communication control module, comprising: the first signal output end and second signal output end；It is described
First signal output end connects the control terminal of power module, and it is defeated to adjust the power supply of power module for exporting brightness regulated signal
Out；The second signal output end is coupled to the third end and the 6th end, for exporting color temperature adjustment signal；Wherein,
In the case where the second signal output end does not export the color temperature adjustment signal, the first switch circuit and second switch
Circuit conducting, to enable second LED light group and third LED light group be connected to the power module cathode output end；Described
In the case that second signal output end exports the color temperature adjustment signal, lead the first switch circuit or second switch circuit
It is logical, to enable second LED light group or third LED light group be connected to the power module cathode output end.
In one embodiment of the invention, the 6th of the third end of the first switch circuit or the second switch circuit the
Logical device is also connected between end and the second signal output end；The logical device is used to be believed according to the color temperature adjustment
Number output opposite signal to the third end or the 6th end, enable the first switch circuit or the second switch circuit lead
It is logical.
In one embodiment of the invention, the logical device is phase inverter.
In one embodiment of the invention, the first switch circuit includes: the first field-effect tube, the first triode,
One resistance and second resistance；First FET drain and the second LED light group other end are electrically connected；Described
One field-effect tube source electrode and the power module cathode output end are electrically connected；First fet gate respectively with it is described
First resistor one end and first transistor collector are electrically connected；One positive pole of another termination of first resistor；Institute
It states the first transistor emitter and connects a power cathode；First transistor base and described second resistance one end are electrically connected；
The second resistance other end and the second signal output end are electrically connected.
In one embodiment of the invention, the second switch circuit includes: the second field-effect tube, the second triode,
Three resistance and the 4th resistance；Second FET drain and the third LED light group other end are electrically connected；Described
Two field-effect tube source electrodes and the power module cathode output end are electrically connected；Second fet gate respectively with it is described
3rd resistor one end and second transistor collector are electrically connected；One positive pole of another termination of 3rd resistor；Institute
It states the second transistor emitter and connects a power cathode；Second transistor base and described 4th resistance one end are electrically connected；
4th resistance one end other end and the second signal output end are electrically connected.
In one embodiment of the invention, the power module includes: AC/DC power supply and DC/DC power supply；The AC/DC
Power supply, for accessing alternating current and exporting direct current；The DC/DC power supply, for accessing direct current and exporting direct current；It is described
AC/DC positive pole output end and the DC/DC power supply positive input are electrically connected；The AC/DC power cathode output end
It is electrically connected with the DC/DC power supply negative input terminal；The AC/DC positive pole output end and cathode output end with it is described
Communication control module power interface is electrically connected；Alternatively, the DC/DC positive pole output end and negative pole of output end with it is described
Communication control module power interface is electrically connected.
In one embodiment of the invention, the first switch circuit includes: the first field-effect tube, the first triode,
One resistance and second resistance；First FET drain and the second LED light group other end are electrically connected；Described
One field-effect tube source electrode and the power module outlet cathode are electrically connected；First fet gate respectively with it is described
First resistor one end and first transistor collector are electrically connected；One positive pole of another termination of first resistor；Institute
It states the first transistor emitter and connects a power cathode；First transistor base and described second resistance one end are electrically connected；
The second resistance other end and communication control module second signal output end are electrically connected；The second switch circuit includes:
Second field-effect tube, the second triode, 3rd resistor, the 4th resistance and phase inverter；Second FET drain with it is described
The third LED light group other end is electrically connected；The second field-effect tube source electrode electrically connects with the power module outlet cathode
It connects；Second fet gate is electrically connected with described 3rd resistor one end and second transistor collector respectively；
One positive pole of another termination of 3rd resistor；Second transistor emitter connects a power cathode；Two or three pole
Pipe base stage and described 4th resistance one end are electrically connected；The 4th resistance other end and the communication control module second signal
Output end is electrically connected；The positive pole can be the AC/DC positive pole or the DC/DC positive pole；Institute
Stating power cathode can be the AC/DC power cathode or the DC/DC power cathode.
In one embodiment of the invention, the power module cathode output end is further connected with the second LED light group other end
First capacitor；The power module cathode output end and the third LED light group other end are further connected with the second capacitor.
In one embodiment of the invention, first LED light group, the second LED light group and third LED light group respectively by
Multiple lamp beads are in series.
In one embodiment of the invention, first LED light group, the second LED light group and third LED light group color point
It Wei not be yellow, red, green.
In one embodiment of the invention, the brightness regulated signal and color temperature adjustment signal are pwm signal.
In order to achieve the above objects and other related objects, the present invention provides a kind of LED color temperature adjusting method, is applied to described
LED illumination System, which comprises receive adjust colour temperature instruction；Send PWM color temperature adjustment signal；Pass through the PWM color
Warm adjustment signal controls the variation of the state that is turned on or off of the first switch circuit or second switch circuit, to control
The turn-on time of two LED light groups or third LED light group realizes light mixing.
In one embodiment of the invention, first LED light group, second LED light group and the third LED light
It is former to correspond to CIE point coordinate position, the first LED light group by the required colour temperature blended for minimum LED lamp bead quantity needed for group difference
Beginning colour temperature corresponds to CIE coordinate position, the original colour temperature of the second LED light group corresponds to CIE coordinate position, the original colour temperature of third LED light group
Corresponding CIE coordinate position and the required colour temperature blended correspond to CIE point coordinate position and correspond to CIE to the original colour temperature of each LED light group
More points coordinate position on coordinate position reverse extending line, is calculated using colour temperature hybrid algorithm.
In order to achieve the above objects and other related objects, the present invention provides a kind of LED luminance adjusting method, is applied to described
LED illumination System, which comprises receive adjust luminance instructions；Send PWM brightness regulated signal；Pass through the PWM tune
Optical signal adjusts AC/DC electric power outputting current, to obtain different brightness.
In order to achieve the above objects and other related objects, the present invention provides a kind of computer readable storage medium, deposits thereon
Contain computer program, which is characterized in that the LED color temperature adjusting method is realized when the program is executed by processor, or real
The existing LED luminance adjusting method.
As described above, LED illumination System of the invention, LED colour temperature brightness adjusting method and readable storage medium storing program for executing, by
Main line setting shares intermediate colour temperature in LED illumination System, is total to extreme color (or colour temperature) color point coordinates different in LED lamp
With the method that mass center carries out color (or colour temperature) mixing, rather than routinely simple color mixing method between multiple extreme color point coordinates,
Logical device is added in control route simultaneously, realizes that different-colour adjusting is kept completely separate from different brightness regulations.Reached with
It is lower the utility model has the advantages that
LED lamp bead utilization rate is improved, saves lamp bead quantity, degradation cost, while power invariability, color conversion are soft and smooth.
Color temperature adjustment is mutually indepedent with brightness regulation, keeps brightness control easier, and toning application in addition can be also dimmed with rear end and is carried out
Man-machine interactive operation.
Detailed description of the invention
Fig. 1 is the module diagram of one of embodiment of the present invention LED illumination System；
Fig. 2 is the circuit diagram of one of embodiment of the present invention LED illumination System；
Fig. 3 is the flow diagram of one of embodiment of the present invention LED color temperature adjusting method；
Fig. 4 is the flow diagram of one of embodiment of the present invention LED luminance adjusting method.
Fig. 5 is the simulation point cloud distribution schematic diagram in the embodiment of the present invention.
Component label instructions
100 LED illumination Systems
101 power modules
102 first LED light groups
103 second LED light groups
104 third LED light groups
105 first switch circuits
106 second switch circuits
107 communication control modules
201 AC/DC power supplys
202 DC/DC power supplys
203 communication control modules
The first LED light group of LED1
The second LED light group of LED2
LED3 third LED light group
The first field-effect tube of Q1
The second field-effect tube of Q2
The first triode of Q3
The second triode of Q4
C1 first capacitor
The second capacitor of C2
R1 first resistor
R2 second resistance
R3 3rd resistor
The 4th resistance of R4
F phase inverter
S301~S303 method and step
S401~S403 method and step
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.It should be noted that in the absence of conflict, following embodiment and implementation
Feature in example can be combined with each other.
It should be noted that illustrating the basic structure that only the invention is illustrated in a schematic way provided in following embodiment
Think, only shown in schema then with related component in the present invention rather than component count, shape and size when according to actual implementation
Draw, when actual implementation kenel, quantity and the ratio of each component can arbitrarily change for one kind, and its assembly layout kenel
It is likely more complexity.
As shown in Figure 1, showing the module diagram of one of embodiment of the present invention LED illumination System, the present invention is provided
A kind of LED illumination System 100, comprising: power module 101, the first LED light group 102, the second LED light group 103, third LED light group
104, first switch circuit 105, second switch circuit 106 and communication control module 107；Wherein, first LED light group
102, second LED light group 103 and the third LED light group 104 are different colours；The power module 101, comprising: control
End, cathode output end and cathode output end processed, the cathode output end connect one end of the first LED light group 102；Described first
The other end of LED light group 102 is separately connected one end of 103 one end of the second LED light group and third LED light group 104；Described first
Switching circuit 105, including connecting the first end of 103 other end of the second LED light group, connecting 101 cathode output end of power module
Second end and third end, the third end are used to control the conducting of first end and second end；The second switch circuit 106, packet
It includes the 4th end of connection 104 other end of third LED light group, connect the 5th end and the 6th of 101 cathode output end of power module
End, the 6th end are used to control the conducting at the 4th end and the 5th end；The communication control module 107, comprising: the first signal is defeated
Outlet and second signal output end；The control terminal of the first signal output end connection power module 101, for exporting brightness
Adjustment signal is exported with the power supply for adjusting power module 101；The second signal output end is coupled to the third end and described
6th end, for exporting color temperature adjustment signal；Wherein, the color temperature adjustment signal is not exported in the second signal output end
In the case of, the first switch circuit 105 and second switch circuit 106 are connected, to enable second LED light group 103 and third
LED light group 104 is connected to 101 cathode output end of power module；The colour temperature tune is exported in the second signal output end
In the case where saving signal, the first switch circuit 105 or second switch circuit 106 is connected, to enable second LED light group
103 or third LED light group 104 be connected to 101 cathode output end of power module.
Alternating current, generally 100~240V alternating current are connect outside the power module 101.
The communication control module 107, including microprocessor, communicator and memory；The microprocessor is for sending
Pwm signal and operation program are to realize LED colour temperature brightness regulation；Communicator communicates to connect external equipment；Memory stores journey
Sequence.
The external equipment includes terminal device, such as smart phone, tablet computer, desktop computer.
The central processing unit that the microprocessor is made of a piece of or several large scale integrated circuit.These circuits are held
The function of row control unit and arithmetic and logical unit (ALU).Microprocessor can complete instruction fetch, execute instruction, and with extraneous memory
The operation such as information is exchanged with logical block, is the operation control part of microcomputer.It can be with memory and peripheral circuit core
Piece forms microcomputer.
The communicator is for realizing database access device and other equipment (such as client, read-write library and read-only library)
Between communication connection, described communicate to connect can be any suitable combinations of one or more wired and or wireless networks
Form.For example, communication mode may include Internet of Things, internet, Intranet, wide area network (WAN), local area network (LAN), wireless network
Network, Digital Subscriber Line (DSL) network, frame-relay network, asynchronous transfer mode (ATM) network, Virtual Private Network (VPN) and/
Or any one or more of any other suitable communication network.
The memory may include random access memory (RandomAccessMemory, abbreviation RAM), it is also possible to also
Including nonvolatile memory (non-volatilememory), for example, at least a magnetic disk storage.
In one embodiment of the invention, the third end of the first switch circuit 105 or the second switch circuit 106
The 6th end and the second signal output end between be also connected with logical device；The logical device is used for according to the colour temperature
Adjustment signal exports opposite signal to the third end or the 6th end, enables the first switch circuit 105 or described second
Switching circuit 106 is connected.
The logical device include it is any can be realized output opposite signal, to enable first switch circuit 105 or the second open
The device of powered-down 106 conducting of road effect.
As shown in Fig. 2, the circuit diagram of one of embodiment of the present invention LED illumination System is shown, in of the invention
In one embodiment, the logical device is phase inverter F.
The phase inverter F is can to apply the phasing back 180 degree of input signal, this circuit in analog circuit, such as
Say that audio is amplified, clock oscillator etc..In electronic circuitry design, phase inverter is often used, CMOS inverter circuit is by two
A enhancement mode MOSFET composition.Typical TTL NAND gate circuit is made of input stage, intergrade, output stage.
In one embodiment of the invention, the first switch circuit 105 includes: the first field-effect tube Q1, the one or three pole
Pipe Q3, first resistor R1 and second resistance R2；The first field-effect tube Q1 drain electrode is another with the second LED light group LED2
End is electrically connected；The first field-effect tube Q1 source electrode and 101 cathode output end of power module are electrically connected；Described first
Field-effect tube Q1 grid is electrically connected with the one end the first resistor R1 and the first triode Q3 collector respectively；It is described
First resistor R1 one positive pole of another termination；The first triode Q3 emitter connects a power cathode；One or three pole
Pipe Q3 base stage and the one end the second resistance R2 are electrically connected；The second resistance R2 other end and the second signal output end
It is electrically connected.
In one embodiment of the invention, the second switch circuit 106 includes: the second field-effect tube Q2, the two or three pole
Pipe Q4,3rd resistor R3 and the 4th resistance R4；The second field-effect tube Q2 drain electrode is another with the third LED light group LED3
End is electrically connected；The second field-effect tube Q2 source electrode and 101 cathode output end of power module are electrically connected；Described second
Field-effect tube Q2 grid is electrically connected with the one end the 3rd resistor R3 and the second triode Q4 collector respectively；It is described
3rd resistor R3 one positive pole of another termination；The second triode Q4 emitter connects a power cathode；Two or three pole
Pipe Q4 base stage and described 4th one end resistance R4 are electrically connected；4th resistance R4 one end other end and the second signal are defeated
Outlet is electrically connected.
In embodiments of the present invention, the first switch circuit 105 and the field-effect tube in the second switch circuit 106
It is identical as triode-type, it realizes by phase inverter in the case where second signal output end exports the color temperature adjustment signal,
The first switch circuit 105 or second switch circuit 106 is connected, that is, chooses a path switching circuit and realizes the opposite letter of output
Number, to enable second LED light group 103 or third LED light group 104 be connected to 101 cathode output end of power module.
Based on above-mentioned purpose, the invention also includes another embodiments, comprising: the one or three in the first switch circuit 105
Pole pipe Q3 emitter and the first field-effect tube Q1 grid are electrically connected；The first triode Q3 collector connects a power cathode；
Second triode Q4 collector and the second field-effect tube Q2 grid are electrically connected in the second switch 106；Two or three pole
Pipe Q4 emitter connects a power cathode.
It will be switched in the emitter of triode in a path switching circuit and collector and another way in above-mentioned another embodiment
The emitter of triode, collector connection type are on the contrary, to realize the effect for replacing phase inverter in circuit.
One way in which, two switching circuits choose same type triode, by wherein all the way the emitter of triode and
Collector exchanges connection；Or two switching circuit choose opposite types triode, it is same to realize emitter and a field-effect tube grid
Pole is electrically connected；Collector connects a power cathode.
In one embodiment of the invention, the power module 101 includes: AC/DC power supply 201 and DC/DC power supply 202；
The AC/DC power supply 201, for accessing alternating current and exporting direct current；The DC/DC power supply 202, for accessing direct current simultaneously
Export direct current；201 cathode output end of AC/DC power supply and 202 electrode input end of DC/DC power supply are electrically connected；Institute
It states 201 cathode output end of AC/DC power supply and 202 negative input of DC/DC power supply is electrically connected；The AC/DC power supply 201
Cathode output end and cathode output end and 203 power interface of communication control module are electrically connected；Alternatively, the DC/DC electricity
202 cathode output end of source and negative pole of output end and 203 power interface of communication control module are electrically connected.
The 201 output end voltage range preferably 30~42V of AC/DC power supply, the preferred 1A of electric current.
The preferred 3.3V or 5V or 10V. of the 202 output end voltage range of DC/DC power supply
In one embodiment of the invention, the first switch circuit 105 includes: the first field-effect tube Q1, the one or three pole
Pipe Q3, first resistor R1 and second resistance R2；The first field-effect tube Q1 drain electrode is another with the second LED light group LED2
End is electrically connected；The first field-effect tube Q1 source electrode and 101 cathode output end of power module are electrically connected；Described first
Field-effect tube Q1 grid is electrically connected with the one end the first resistor R1 and the first triode Q3 collector respectively；It is described
First resistor R1 one positive pole of another termination；The first triode Q3 emitter connects a power cathode；One or three pole
Pipe Q3 base stage and the one end the second resistance R2 are electrically connected；The second resistance R2 other end and the second signal output end
It is electrically connected；The second switch circuit 106 includes: the second field-effect tube Q2, the second triode Q4,3rd resistor R3 and
Four resistance R4；The second field-effect tube Q2 drain electrode is electrically connected with the third LED light group LED3 other end；Described second
Effect pipe Q2 source electrode and 101 cathode output end of power module are electrically connected；The second field-effect tube Q2 grid respectively with
The one end the 3rd resistor R3 and the second triode Q4 collector are electrically connected；Another termination one of 3rd resistor R3
Positive pole；The second triode Q4 emitter connects a power cathode；The second triode Q4 base stage and the 4th electricity
The one end R4 is hindered to be electrically connected；4th resistance R4 one end other end and the second signal output end are electrically connected；The electricity
Source anode can be 202 anode of 201 anode of AC/DC power supply or the DC/DC power supply；The power cathode can be with
It is 201 cathode of AC/DC power supply or 202 cathode of DC/DC power supply.
The positive pole can also be that the power supply unit anode being independently arranged in LED illumination System, the power supply are negative
Pole can also be the power supply unit cathode being independently arranged in LED illumination System.
In one embodiment of the invention, 101 cathode output end of power module and the second LED light group LED2 other end
It is further connected with first capacitor C1；101 cathode output end of power module and the third LED light group LED3 other end are further connected with the second electricity
Hold C2.
The first capacitor C1 and the second capacitor C2 mainly plays filtering and Anti-surging percussion in circuit.
In one embodiment of the invention, first LED light group 102, the second LED light group 103 and third LED light group
104 is in series by multiple lamp beads respectively.
Lamp bead, that is, the light emitting diode.
In one embodiment of the invention, first LED light group 102, the second LED light group 103 and third LED light group
104 colors are respectively yellow, red, green.
The lamp group color is different, and to realize color adaptation, there are many variations.
In one embodiment of the invention, the brightness regulated signal and color temperature adjustment signal are pwm signal.
The pwm signal is exactly pulse width modulating signal, is the pulse waveform signal of variable duty ratio.
As shown in figure 3, showing the flow diagram of LED color temperature adjusting method of the present invention in an embodiment, it is applied to
The LED illumination System, which comprises
Step S301: it receives and adjusts colour temperature instruction.
Step S302: PWM color temperature adjustment signal is sent.
Step S303: by the PWM color temperature adjustment signal, the first switch circuit 105 or second switch electricity are controlled
The variation of the state that is turned on or off on road 106, it is real to control the turn-on time of the second LED light group 103 or third LED light group 104
Existing light mixing.
The reception adjusts colour temperature instruction and can be sent by external equipment, such as mobile phone terminal or computer terminal.
By the variation of duty ratio in PWM toning signal, adjustment flows through the first adjusting circuit 105 and second and adjusts electricity
106 current ratio of road, to obtain different mixing colour temperatures；The current ratio is by corresponding coordinate bit of the required colour temperature blended
It sets and arrives the original colour temperature coordinate position of second LED light group 103 and the original colour temperature coordinate bit of the third LED light group 104 respectively
The ratio of distance determines between setting.
In one embodiment of the invention, first LED light group 102, second LED light group 103 and the third
Minimum LED lamp bead quantity, corresponds to CIE point coordinate position, first by the required colour temperature blended needed for the difference of LED light group 104
The original colour temperature of LED light group 102 corresponds to CIE coordinate position, the original colour temperature of the second LED light group 103 corresponds to CIE coordinate position, third
The original colour temperature of LED light group 104 corresponds to CIE coordinate position and the required colour temperature blended corresponds to CIE point coordinate position to each LED
The original colour temperature of lamp group corresponds to more points coordinate position on CIE coordinate position reverse extending line, is calculated using colour temperature hybrid algorithm
It arrives.
The colour temperature hybrid algorithm is based on existing colour temperature and mixes basic principle:
- LED1: color dot 1 (x1, y1), luminous flux phi 1
- LED2: color dot 2 (x2, y2), luminous flux phi 2
–X,Y and Z
X1=x1* (Φ 1/y1)；Y1=Φ 1；Z1=(Φ 1/y1) * (1-x1-y1)
X2=x2* (Φ 2/y2)；Y2=Φ 2；Z2=(Φ 2/y2) * (1-x2-y2)
Colour mixture:
Xmix=X1+X2；Ymix=Y1+Y2and Zmix=Z1+Z2
Final coordinate and CCT:
Xmix=Xmix/ (Xmix+Ymix+Zmix)
Ymix=Ymix/ (Xmix+Ymix+Zmix)
Φ mix=Y1+Y2
N=(x-0.3320)/(0.1858-y)
CCT=437*n^3+3601*n^2+6831*n+5517
N indicates that chromaticity coordinates is converted to the middle coefficient of colour temperature in the formula.
The CCT is English correlated color temperature abbreviation, what optics noun was issued when light source
When the color that the color and black matrix of light radiate at a certain temperature is close, the temperature of the black matrix is known as the related colour of the light source
Temperature, unit K.
As shown in figure 4, showing the flow diagram of LED luminance adjusting method of the present invention in an embodiment, it is applied to
The LED illumination System, which comprises
Step S401: it receives and adjusts luminance instructions.
Step S402: PWM brightness regulated signal is sent.
Step S403: by the PWM dim signal, AC/DC electric power outputting current is adjusted, to obtain different brightness.
The LED luminance is mainly determined that is, PWM dim signal independence duty ratio is determined by electric current on main line circuit.
In order to achieve the above objects and other related objects, the present invention provides a kind of computer readable storage medium, deposits thereon
Contain computer program, which is characterized in that the LED color temperature adjusting method is realized when the program is executed by processor, or real
The existing LED luminance adjusting method.
As shown in figure 5, simulation point cloud distribution schematic diagram of the present invention in an embodiment is shown, applied to the LED
Lighting system.It is randomly assigned suitably by Monte Carlo EGS4 method using the given elliptical central value of color temperature distribution and major and minor axis etc.
Color point coordinates, main line median obtain the color point coordinates of colour temperature after mixing under certain duty ratio after mixing with two by-pass color temperature values
Distribution show that a cloud is distributed by simulation, is consistent through calculating with the color temperature regions of actual demand.
The computer readable storage medium, those of ordinary skill in the art will appreciate that: realize that above-mentioned each method is implemented
The all or part of the steps of example can be completed by the relevant hardware of computer program.Computer program above-mentioned can store
In a computer readable storage medium.When being executed, execution includes the steps that above-mentioned each method embodiment to the program；And it is aforementioned
Storage medium include: the various media that can store program code such as ROM, RAM, magnetic or disk.
In conclusion the present invention effectively overcomes various shortcoming in the prior art and has high industrial utilization value.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (15)
1. a kind of LED illumination System characterized by comprising
Power module, the first LED light group, the second LED light group, third LED light group, first switch circuit, second switch circuit and
Communication control module；Wherein, first LED light group, second LED light group and the third LED light group are different face
Color；
The power module, comprising: control terminal, cathode output end and cathode output end, the cathode output end connection first
One end of LED light group；
The other end of first LED light group is separately connected one end of second LED light group one end and third LED light group；
The first switch circuit, first end, connection power module cathode output end including connecting the second LED light group other end
Second end and third end, the third end be used to control the conducting of first end and second end；
The second switch circuit, the 4th end, connection power module cathode output end including connecting the third LED light group other end
The 5th end and the 6th end, the 6th end is used to control the conducting at the 4th end and the 5th end；
The communication control module, comprising: the first signal output end and second signal output end；First signal output end
The control terminal for connecting power module adjusts the power supply output of power module for exporting brightness regulated signal；
The second signal output end is coupled to the third end and the 6th end, for exporting color temperature adjustment signal；
Wherein, in the case where the second signal output end does not export the color temperature adjustment signal, the first switch circuit
And the conducting of second switch circuit, to enable second LED light group and third LED light group and the power module cathode output end connect
It is logical；In the case where the second signal output end exports the color temperature adjustment signal, make the first switch circuit or second
Switching circuit conducting, to enable second LED light group or third LED light group be connected to the power module cathode output end.
2. LED illumination System according to claim 1, which is characterized in that the third end of the first switch circuit or institute
It states and is also connected with logical device between the 6th end of second switch circuit and the second signal output end；The logical device is used
In exporting opposite signal to the third end or the 6th end according to the color temperature adjustment signal, the first switch circuit is enabled
Or the second switch circuit conducting.
3. LED illumination System according to claim 2, which is characterized in that the logical device is phase inverter.
4. LED illumination System according to claim 1, which is characterized in that the first switch circuit includes: first effect
Ying Guan, the first triode, first resistor and second resistance；
First FET drain and the second LED light group other end are electrically connected；The first field-effect tube source electrode
It is electrically connected with the power module cathode output end；First fet gate respectively with described first resistor one end,
And first transistor collector is electrically connected；
One positive pole of another termination of first resistor；
First transistor emitter connects a power cathode；
First transistor base and described second resistance one end are electrically connected；The second resistance other end and described second
Signal output end is electrically connected.
5. LED illumination System according to claim 1, which is characterized in that the second switch circuit includes: second effect
Ying Guan, the second triode, 3rd resistor and the 4th resistance；
Second FET drain and the third LED light group other end are electrically connected；The second field-effect tube source electrode
It is electrically connected with the power module cathode output end；Second fet gate respectively with described 3rd resistor one end,
And second transistor collector is electrically connected；
One positive pole of another termination of 3rd resistor；
Second transistor emitter connects a power cathode；
Second transistor base and described 4th resistance one end are electrically connected；4th resistance one end other end with it is described
Second signal output end is electrically connected.
6. LED illumination System according to claim 1, which is characterized in that the power module include: AC/DC power supply and
DC/DC power supply；
The AC/DC power supply, for accessing alternating current and exporting direct current；
The DC/DC power supply, for accessing direct current and exporting direct current；
The AC/DC positive pole output end and the DC/DC power supply positive input are electrically connected；The AC/DC power supply is negative
Pole output end and the DC/DC power supply negative input terminal are electrically connected；
The AC/DC positive pole output end and cathode output end and the communication control module power interface are electrically connected；Or
Person, the DC/DC positive pole output end and negative pole of output end and the communication control module power interface are electrically connected.
7. LED illumination System according to claim 6, which is characterized in that the first switch circuit includes: first effect
Ying Guan, the first triode, first resistor and second resistance；First FET drain and second LED light group are another
End is electrically connected；The first field-effect tube source electrode and the power module outlet cathode are electrically connected；First effect
Tube grid is answered to be electrically connected respectively with described first resistor one end and first transistor collector；The first resistor is another
One one positive pole of termination；First transistor emitter connects a power cathode；First transistor base and described the
Two resistance one end are electrically connected；The second resistance other end and communication control module second signal output end are electrically connected；
The second switch circuit includes: the second field-effect tube, the second triode, 3rd resistor, the 4th resistance and phase inverter；
Second FET drain and the third LED light group other end are electrically connected；The second field-effect tube source electrode and institute
State the electric connection of power module outlet cathode；Second fet gate respectively with described 3rd resistor one end and institute
State the electric connection of the second transistor collector；One positive pole of another termination of 3rd resistor；Second triode emission
Pole connects a power cathode；Second transistor base and described 4th resistance one end are electrically connected；4th resistance is another
End is electrically connected with the communication control module second signal output end；
The positive pole can be the AC/DC positive pole or the DC/DC positive pole；The power cathode
It can be the AC/DC power cathode or the DC/DC power cathode.
8. LED illumination System according to claim 1, which is characterized in that the power module cathode output end and second
The LED light group other end is further connected with first capacitor；The power module cathode output end and the third LED light group other end are further connected with the
Two capacitors.
9. LED illumination System according to claim 1, which is characterized in that first LED light group, the second LED light group,
And third LED light group is in series by multiple lamp beads respectively.
10. LED illumination System according to claim 1, which is characterized in that first LED light group, the second LED light group,
And third LED light group color is respectively yellow, red, green.
11. LED illumination System according to claim 1, which is characterized in that the brightness regulated signal and color temperature adjustment letter
Number be pwm signal.
12. a kind of LED color temperature adjusting method, which is characterized in that applied to the LED as described in claim 1~10 any one
Lighting system, which comprises
It receives and adjusts colour temperature instruction；
Send PWM color temperature adjustment signal；
By the PWM color temperature adjustment signal, the shape that is turned on or off of the first switch circuit or second switch circuit is controlled
The variation of state realizes light mixing to control the turn-on time of the second LED light group or third LED light group.
13. LED color temperature adjusting method according to claim 11, which is characterized in that first LED light group, described
Minimum LED lamp bead quantity needed for two LED light groups and third LED light group difference, it is corresponding by the required colour temperature blended
CIE point coordinate position, the original colour temperature of the first LED light group correspond to CIE coordinate position, the original colour temperature of the second LED light group corresponds to CIE seat
Cursor position, the original colour temperature of third LED light group correspond to CIE coordinate position and the required colour temperature blended corresponds to CIE point coordinate position
More points coordinate position on CIE coordinate position reverse extending line is corresponded to the original colour temperature of each LED light group, utilizes colour temperature hybrid algorithm
It is calculated.
14. a kind of LED luminance adjusting method, which is characterized in that applied to the LED as described in claim 1~10 any one
Lighting system, which comprises
It receives and adjusts luminance instructions；
Send PWM brightness regulated signal；
By the PWM dim signal, AC/DC electric power outputting current is adjusted, to obtain different brightness.
15. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is by processor
LED color temperature adjusting method described in any one of claim 12 to 13 is realized when execution, or is realized described in claim 14
LED luminance adjusting method.
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