CN108235510A - A kind of light source that detects quickly adjusts the method for colour temperature brightness and detection light source - Google Patents
A kind of light source that detects quickly adjusts the method for colour temperature brightness and detection light source Download PDFInfo
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- CN108235510A CN108235510A CN201711499646.9A CN201711499646A CN108235510A CN 108235510 A CN108235510 A CN 108235510A CN 201711499646 A CN201711499646 A CN 201711499646A CN 108235510 A CN108235510 A CN 108235510A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses a kind of methods for detecting light source and quickly adjusting colour temperature brightness, and including adjusting colour temperature brightness calculation processing circuit first according to influence coefficient of the electric current output variation to brightness value, calculate current flow influences coefficient L to brightness valueaCoefficient and present intensity value and predetermined luminance value are influenced on brightness value further according to the current flow calculated, calculate the current value I for needing to adjust, so as to fulfill quick adjustment output current, and then is rapidly achieved predetermined luminance value；After the brightness value for obtaining setting, colour temperature, brightness Acquisition Circuit acquire current colour temperature, if current colour temperature is more than preset value, high color temperature lamp bead power are reduced by central control circuit, until reaching preset color temperature value；If current colour temperature is less than preset value, low colour temperature lamp bead power is reduced by central control circuit, until reaching preset color temperature value, completes the quick adjusting to colour temperature.Invention additionally discloses the detection light sources for implementing this method.
Description
Technical field
The present invention relates to detection light source field, and in particular to it is a kind of detect light source quickly adjust colour temperature brightness method and
Implement the detection light source of this method.
Background technology
Traditional light source can only rely on controller to set gray scale, can not accurately set the current illumination of light source.
Traditional adjustable color light source only adjusts different capacity with two kinds of lamp beads of height colour temperature and realizes that colour temperature can manually
It adjusts, can not accurately set required colour temperature.
Conventional light source sets the brightness of similary rank using will appear light decay, controller after when one section, using it is long with
It needs to recalibrate the brightness needed afterwards, a fixed brightness or color temperature value can not be set.
Invention content
In view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of sides detected light source and quickly adjust colour temperature brightness
Method and the detection light source for implementing this method, solve the problems, such as that existing light source can not set constant brightness value and color temperature value.
Present invention technical solution used for the above purpose is：
A kind of method for detecting light source and quickly adjusting colour temperature brightness, includes the following steps：
(1) light source is set, is equipped with LED group luminescent screens in the light source, the LED groups luminescent screen by multiple high color temperature lamp beads with it is more
A low colour temperature lamp bead is staggered composition；
(2) control circuit board is set, and integrating central control circuit in the control circuit board adjusts the processing of colour temperature brightness calculation
Circuit, double constant current driver circuit for LED, colour temperature, brightness Acquisition Circuit, power circuit and serial communication circuit；
(3) it is embedded in brightness in the adjusting colour temperature brightness calculation processing circuit and colour temperature quickly adjusts algorithm；
(4) it is powered and starts to work, set required brightness value and color temperature value, LED group luminescent screens shine；
(5) the quick adjusting of brightness value：Central control circuit control output current gradually increases, and it is 1mA to increase amplitude,
Colour temperature, brightness Acquisition Circuit are acquired every brightness value for increasing 1mA, adjust colour temperature brightness calculation processing circuit basis first
Influence coefficient of the electric current output variation to brightness value, calculate current flow influences coefficient L to brightness valueaFormula be：
La=Ln+1-Ln
In formula：N is present current value, and n+1 is that current flow increases the value after 1mA, Ln+1After increasing 1mA for current flow
Brightness value, LnBrightness value for current flow；
Coefficient and present intensity value and predetermined luminance value, meter are influenced on brightness value further according to the current flow calculated
The current value I for needing to adjust is calculated, the calculation formula of brightness value I is：
In formula：LsetFor predetermined luminance value, L is present intensity value, LaCoefficient is influenced on brightness value for current flow；
So as to fulfill quick adjustment output current, and then it is rapidly achieved predetermined luminance value；
(6) the quick adjusting of color temperature value：After the brightness value for obtaining setting, colour temperature, brightness Acquisition Circuit acquire current colour temperature,
If current colour temperature is more than preset value, high color temperature lamp bead power is reduced by central control circuit, until reaching preset color temperature value；
If current colour temperature is less than preset value, low colour temperature lamp bead power is reduced by central control circuit, until reaching preset color temperature value,
Complete the quick adjusting to colour temperature.
The principle of this method is, such as in parallel using 18 cluster of lamps, ornamental pearls, and output total current, which often increases big 1mA light-source brightness, increases feelings
It is as shown in the table for condition：
It can obtain, often increase 1mA output currents brightness increase numerical value after total current is more than 20mA and be essentially
Between 150Lux~100Lux, thus rule can be pushed away according to the error of the brightness value currently set and the brightness value currently measured
Break and the electric current that needs increase or decrease, so as to which light-source brightness be allowed quickly to approach the brightness value of setting, closer to the brightness of setting
Be worth curent change amplitude it is smaller, so as to be quickly obtained in the accuracy rating of needs the brightness close with desired value then further according to
The brightness adjustment that the required precision needed is more refined step by step, it is right respectively further according to collected colour temperature after adjustment brightness every time
The power of height colour temperature lamp bead is adjusted, so that light source color temperature variation control is in a certain range during brightness adjustment
It is interior.
The light source includes heat sink, and LED group luminescent screens are equipped in heat sink, and side plate is equipped in heat sink periphery,
Annular cover plate is equipped in side plate top, in being fixed with diffusing panel on annular cover plate；Colour temperature, brightness acquisition core are equipped in side plate side
Piece circuit board is equipped with light damping plate, colour temperature, brightness acquisition chip circuit postlaminar part in colour temperature, brightness acquisition chip circuit prelaminar part
Equipped with mounting base.
The central control circuit includes central control chip U11 and capacitance C41, wherein, the central control chip U11
The 7th foot connection capacitance C41 one end, the capacitance C41 other ends, the 8th foot of central control chip U11, central control chip U11
23rd foot, the 35th foot of central control chip U11, the 44th foot of central control chip U11 and central control chip U11 the 47th
Foot is grounded；The 9th foot of the central control chip U11, the 24th foot of central control chip U11, central control chip U11
The 48th foot of 36 feet and central control chip U11 connect 3.3V power supplys.
It adjusts colour temperature brightness calculation processing circuit and includes processing chip U9, resistance R30, resistance R32, resistance R33, resistance
R34, wherein the 1st feet of processing chip U9 connection resistance R30 one end, the 6th feet of processing chip U9 connection resistance R34 one end, place
Manage the 7th foot connection resistance R33 one end of chip U9, the 8th feet of processing chip U9 connection resistance R32 one end, the resistance R30 other ends, place
Manage the 15th foot ground connection of chip U9, the 5th feet of processing chip U9, the resistance R32 other ends, the resistance R33 other ends, the resistance R34 other end
And the 16th feet of processing chip U9 connect 3.3V power supplys.
The constant current driver circuit for LED includes LED constant current driving chip U1, capacitance C1, capacitance C3, capacitance C3, diode
D1, inductance L1, capacitance C5, capacitance C6, resistance R3, resistance R4, metal-oxide-semiconductor Q1, resistance R1, resistance R2, capacitance C2, plug-in unit P1, with
NOT gate U3, slide rheostat VR1, resistance R9, operational amplifier U4, capacitance C8, capacitance C13, capacitance C14, capacitance C15, resistance
R5, resistance R6, resistance R7, resistance R10；Wherein, the 4th foot connection capacitance C4 one end of the LED constant current driving chip U1, LED
The 3rd foot of constant-current driven chip U1 is connected with diode cathode, inductance L1 one end, the inductance L1 other ends and capacitance C5 anodes,
Capacitance C6 one end and the 1st feet of plug-in unit P1 are connected, the 2nd foot and resistance R3 one end and the slip variable resistance of LED constant current driving chip U1
Device VR1 one end is connected, and the resistance R3 other ends are connected with the S poles of resistance R4 one end and metal-oxide-semiconductor Q1, the D poles connection of metal-oxide-semiconductor Q1
The crus secunda of plug-in unit P1, the G poles of metal-oxide-semiconductor Q1 are connected with resistance R1 one end and resistance R2 one end, the resistance R1 other ends connection with
The 4th foot of NOT gate U3, NAND gate U3 the 1st, 2 feet connection central control circuit, slide rheostat VR1 other ends connection resistance R9
One end, the resistance R9 other ends are connected with the 1st feet of operational amplifier U4, the 2nd foot, the 3rd feet of operational amplifier U4 and capacitance C15 mono-
End and resistance R7 one end are connected, and the resistance R7 other ends are connected with resistance R6 one end and the capacitance C14 other ends, and resistance R6 is another
End is connected with capacitance C13 one end, resistance R10 one end and resistance R5 one end, resistance R5 other ends connection central control circuit；Institute
Capacitance C1 one end, capacitance C3 one end are stated, the capacitance C4 other ends connect 24.5V power supplys with the 5th foot of LED constant current driving chip U1,
The 5th foot of NAND gate U3, capacitance C2 one end, capacitance C8 one end and operational amplifier U4 the 8th foot connect 5V power supplys；Capacitance C1 is another
End, the capacitance C3 other ends, the 1st foot of LED constant current driving chip U1, diode D1 anodes, capacitance C5 cathode, capacitance C6 are another
End, the 4th of the resistance R4 other ends, the resistance R2 other ends, the 3rd foot of NAND gate U3, the capacitance C2 other ends, operational amplifier U4 the
Foot, the capacitance C8 other ends, the capacitance C15 other ends, the capacitance C14 other ends, the capacitance C13 other ends and the resistance R10 other ends connect
Ground.
The power circuit includes DC/DC switching regulator U5, voltage stabilizing chip U2, resistance R11, resistance R15, capacitance C16,
Capacitance C17, capacitance C18, capacitance C7, capacitance C19, capacitance C20, resistance R14, diode D2, inductance L2, capacitance C9, capacitance
C10, resistance R8, resistance R13, capacitance C11, capacitance C12, light emitting diode D3, resistance R12, wherein, the DC/DC switches are steady
The 4th foot connection capacitance C18 one end of depressor U5, resistance R11 one end connection resistance R15 one end, and central control circuit is connected,
The 5th foot of DC/DC switching regulators U5 is connected with resistance R13 one end and resistance R8 one end, and the of DC/DC switching regulators U5
6 feet are connected with capacitance C19 one end and resistance R14 one end, resistance R14 other ends connection capacitance C20 one end, and DC/DC switches are steady
The 1st foot connection capacitance C7 one end of depressor U5, the 8th foot and the capacitance C7 other ends, the diode D2 of DC/DC switching regulators U5 are born
Pole, inductance L2 one end are connected, the resistance R11 other ends, capacitance C16 one end, capacitance C17 one end and DC/DC switching regulators U5
The 2nd foot connection 24.5V power supplys；The inductance L2 other ends, the capacitance C9 other ends, the capacitance C10 other ends, the resistance R8 other ends and steady
Press the 3rd foot connection 5V power supplys of chip U2；The 2nd foot, capacitance C11 one end, capacitance C12 one end and the light-emitting diodes of voltage stabilizing chip U2
The anode of pipe D3 connects 3.3 power supplys；The resistance R15 other ends, the capacitance C16 other ends, the capacitance C17 other ends, capacitance C18 are another
End, the capacitance C19 other ends, the capacitance C20 other ends, the capacitance C10 other ends, the resistance R13 other ends, the 1st feet of voltage stabilizing chip U2, electricity
Hold the C11 other ends, the capacitance C12 other ends and resistance R12 other ends ground connection.
The colour temperature, brightness Acquisition Circuit include plug-in unit P9, diode CR1, diode CR2, photoelectrical coupler U12 and electricity
The 1st foot connection diode CR1 one end of resistance R39, wherein plug-in unit P9, diode CR1 other ends connection diode CR2 one end, two
The 1st foot of pole pipe CR2 other ends connection photoelectrical coupler U12, the 2nd feet of the 2nd foot connection plug-in unit P9 of photoelectrical coupler U12, light
The 3rd foot ground connection of electric coupler U12, the 4th foot of photoelectrical coupler U12 are connect with resistance R39 one end, and connect center control electricity
Road, resistance R39 other ends connection 3.3V power supplys.
The serial communication circuit is TTL RS 232 circuits.
Including heat sink, LED group luminescent screens are equipped in heat sink for a kind of detection light source for implementing the method, in
Heat sink periphery is equipped with side plate, annular cover plate is equipped in side plate top, in being fixed with diffusing panel on annular cover plate；In side plate one
Side is equipped with colour temperature, brightness acquisition chip circuit board, and light damping plate is equipped in colour temperature, brightness acquisition chip circuit prelaminar part, colour temperature, bright
It spends acquisition chip circuit postlaminar part and is equipped with mounting base.
It further includes control circuit board, integrating central control circuit in the control circuit board, adjusts at colour temperature brightness calculation
Manage circuit, double constant current driver circuit for LED, colour temperature, brightness Acquisition Circuit, power circuit and serial communication circuit.
The beneficial effects of the invention are as follows：Increase brightness, colour temperature Acquisition Circuit, calculate light source present intensity, colour temperature number in real time
According to, the luminescent screen being staggered using high color temperature lamp bead and low colour temperature lamp bead, and pass through each street lamp pearl of special algorithm dynamic regulation
Power so that user can quickly obtain the brightness of setting and the light of colour temperature.
Description of the drawings
Fig. 1 is overall structure diagram of the present invention；
Fig. 2 is Fig. 1 explosive views；
Fig. 3 is central control circuit figure of the present invention；
Fig. 4 adjusts colour temperature brightness calculation processing circuit figure for the present invention；
Fig. 5 is the double constant current driver circuit for LED of the present invention wherein circuit diagram all the way；
Fig. 6 is colour temperature of the present invention, brightness Acquisition Circuit figure；
Fig. 7 is power circuit diagram of the present invention；
Fig. 8 is serial communication circuit figure of the present invention；
Fig. 9 is key control circuit figure of the present invention.
In figure：3. side plate of 1.LED groups 2. heat sink of luminescent screen, 4. annular cover plate
5. 6. colour temperature of diffusing panel, 7. light damping plate of brightness acquisition chip circuit board
8. mounting base
Specific embodiment
Embodiment：Referring to Fig. 1 to Fig. 9, the present embodiment provides a kind of method for detecting light source and quickly adjusting colour temperature brightness,
Include the following steps：
(1) light source is set, is equipped with LED groups luminescent screen 1 in the light source, the LED groups luminescent screen 1 by multiple high color temperature lamp beads with
Multiple low colour temperature lamp beads are staggered composition；
(2) control circuit board is set, and integrating central control circuit in the control circuit board adjusts the processing of colour temperature brightness calculation
Circuit, double constant current driver circuit for LED, colour temperature, brightness Acquisition Circuit, power circuit and serial communication circuit；
(3) it is embedded in brightness in the adjusting colour temperature brightness calculation processing circuit and colour temperature quickly adjusts algorithm；
(4) it is powered and starts to work, set required brightness value and color temperature value, LED group luminescent screens shine；
(5) the quick adjusting of brightness value：Central control circuit control output current gradually increases, and it is 1mA to increase amplitude,
Colour temperature, brightness Acquisition Circuit are acquired every brightness value for increasing 1mA, adjust colour temperature brightness calculation processing circuit basis first
Influence coefficient of the electric current output variation to brightness value, calculate current flow influences coefficient L to brightness valueaFormula be：
La=Ln+1-Ln
In formula：N is present current value, and n+1 is that current flow increases the value after 1mA, Ln+1After increasing 1mA for current flow
Brightness value, LnBrightness value for current flow；
Coefficient and present intensity value and predetermined luminance value, meter are influenced on brightness value further according to the current flow calculated
The current value I for needing to adjust is calculated, the calculation formula of brightness value I is：
In formula：LsetFor predetermined luminance value, L is present intensity value, LaCoefficient is influenced on brightness value for current flow；
So as to fulfill quick adjustment output current, and then it is rapidly achieved predetermined luminance value；
(6) the quick adjusting of color temperature value：After the brightness value for obtaining setting, colour temperature, brightness Acquisition Circuit acquire current colour temperature,
If current colour temperature is more than preset value, high color temperature lamp bead power is reduced by central control circuit, until reaching preset color temperature value；
If current colour temperature is less than preset value, low colour temperature lamp bead power is reduced by central control circuit, until reaching preset color temperature value,
Complete the quick adjusting to colour temperature.
The light source includes heat sink 2, and LED groups luminescent screen 1 is equipped in heat sink 2, and side is equipped in 2 periphery of heat sink
Plate 3 is equipped with annular cover plate 4, in being fixed with diffusing panel 5 on annular cover plate 4 in 3 top of side plate；In 3 side of side plate be equipped with colour temperature,
Brightness acquisition chip circuit board 6 is equipped with light damping plate 7, colour temperature, brightness acquisition core in colour temperature, 6 forepart of brightness acquisition chip circuit board
6 rear portion of piece circuit board is equipped with mounting base 8.
The central control circuit includes central control chip U11 and capacitance C41, wherein, the central control chip U11
The 7th foot connection capacitance C41 one end, the capacitance C41 other ends, the 8th foot of central control chip U11, central control chip U11
23rd foot, the 35th foot of central control chip U11, the 44th foot of central control chip U11 and central control chip U11 the 47th
Foot is grounded；The 9th foot of the central control chip U11, the 24th foot of central control chip U11, central control chip U11
The 48th foot of 36 feet and central control chip U11 connect 3.3V power supplys.
The central control chip U11 is STM32F103V8T6.
It adjusts colour temperature brightness calculation processing circuit and includes processing chip U9, resistance R30, resistance R32, resistance R33, resistance
R34, wherein the 1st feet of processing chip U9 connection resistance R30 one end, the 6th feet of processing chip U9 connection resistance R34 one end, place
Manage the 7th foot connection resistance R33 one end of chip U9, the 8th feet of processing chip U9 connection resistance R32 one end, the resistance R30 other ends, place
Manage the 15th foot ground connection of chip U9, the 5th feet of processing chip U9, the resistance R32 other ends, the resistance R33 other ends, the resistance R34 other end
And the 16th feet of processing chip U9 connect 3.3V power supplys.
The processing chip U9 is STM32F030F4.
The constant current driver circuit for LED includes LED constant current driving chip U1, capacitance C1, capacitance C3, capacitance C3, diode
D1, inductance L1, capacitance C5, capacitance C6, resistance R3, resistance R4, metal-oxide-semiconductor Q1, resistance R1, resistance R2, capacitance C2, plug-in unit P1, with
NOT gate U3, slide rheostat VR1, resistance R9, operational amplifier U4, capacitance C8, capacitance C13, capacitance C14, capacitance C15, resistance
R5, resistance R6, resistance R7, resistance R10；Wherein, the 4th foot connection capacitance C4 one end of the LED constant current driving chip U1, LED
The 3rd foot of constant-current driven chip U1 is connected with diode cathode, inductance L1 one end, the inductance L1 other ends and capacitance C5 anodes,
Capacitance C6 one end and the 1st feet of plug-in unit P1 are connected, the 2nd foot and resistance R3 one end and the slip variable resistance of LED constant current driving chip U1
Device VR1 one end is connected, and the resistance R3 other ends are connected with the S poles of resistance R4 one end and metal-oxide-semiconductor Q1, the D poles connection of metal-oxide-semiconductor Q1
The crus secunda of plug-in unit P1, the G poles of metal-oxide-semiconductor Q1 are connected with resistance R1 one end and resistance R2 one end, the resistance R1 other ends connection with
The 4th foot of NOT gate U3, NAND gate U3 the 1st, 2 feet connection central control circuit, slide rheostat VR1 other ends connection resistance R9
One end, the resistance R9 other ends are connected with the 1st feet of operational amplifier U4, the 2nd foot, the 3rd feet of operational amplifier U4 and capacitance C15 mono-
End and resistance R7 one end are connected, and the resistance R7 other ends are connected with resistance R6 one end and the capacitance C14 other ends, and resistance R6 is another
End is connected with capacitance C13 one end, resistance R10 one end and resistance R5 one end, resistance R5 other ends connection central control circuit；Institute
Capacitance C1 one end, capacitance C3 one end are stated, the capacitance C4 other ends connect 24.5V power supplys with the 5th foot of LED constant current driving chip U1,
The 5th foot of NAND gate U3, capacitance C2 one end, capacitance C8 one end and operational amplifier U4 the 8th foot connect 5V power supplys；Capacitance C1 is another
End, the capacitance C3 other ends, the 1st foot of LED constant current driving chip U1, diode D1 anodes, capacitance C5 cathode, capacitance C6 are another
End, the 4th of the resistance R4 other ends, the resistance R2 other ends, the 3rd foot of NAND gate U3, the capacitance C2 other ends, operational amplifier U4 the
Foot, the capacitance C8 other ends, the capacitance C15 other ends, the capacitance C14 other ends, the capacitance C13 other ends and the resistance R10 other ends connect
Ground.
The LED constant current driving chip U1 is AMC7150DLGT, NAND gate U3 SN74LVC1G00, operational amplifier U4
For LM358.
The power circuit includes DC/DC switching regulator U5, voltage stabilizing chip U2, resistance R11, resistance R15, capacitance C16,
Capacitance C17, capacitance C18, capacitance C7, capacitance C19, capacitance C20, resistance R14, diode D2, inductance L2, capacitance C9, capacitance
C10, resistance R8, resistance R13, capacitance C11, capacitance C12, light emitting diode D3, resistance R12, wherein, the DC/DC switches are steady
The 4th foot connection capacitance C18 one end of depressor U5, resistance R11 one end connection resistance R15 one end, and central control circuit is connected,
The 5th foot of DC/DC switching regulators U5 is connected with resistance R13 one end and resistance R8 one end, and the of DC/DC switching regulators U5
6 feet are connected with capacitance C19 one end and resistance R14 one end, resistance R14 other ends connection capacitance C20 one end, and DC/DC switches are steady
The 1st foot connection capacitance C7 one end of depressor U5, the 8th foot and the capacitance C7 other ends, the diode D2 of DC/DC switching regulators U5 are born
Pole, inductance L2 one end are connected, the resistance R11 other ends, capacitance C16 one end, capacitance C17 one end and DC/DC switching regulators U5
The 2nd foot connection 24.5V power supplys；The inductance L2 other ends, the capacitance C9 other ends, the capacitance C10 other ends, the resistance R8 other ends and steady
Press the 3rd foot connection 5V power supplys of chip U2；The 2nd foot, capacitance C11 one end, capacitance C12 one end and the light-emitting diodes of voltage stabilizing chip U2
The anode of pipe D3 connects 3.3 power supplys；The resistance R15 other ends, the capacitance C16 other ends, the capacitance C17 other ends, capacitance C18 are another
End, the capacitance C19 other ends, the capacitance C20 other ends, the capacitance C10 other ends, the resistance R13 other ends, the 1st feet of voltage stabilizing chip U2, electricity
Hold the C11 other ends, the capacitance C12 other ends and resistance R12 other ends ground connection.
The DC/DC switching regulators U5 is TPS54331, U2 LM1117-3.3V of voltage stabilizing chip.
The colour temperature, brightness Acquisition Circuit include plug-in unit P9, diode CR1, diode CR2, photoelectrical coupler U12 and electricity
The 1st foot connection diode CR1 one end of resistance R39, wherein plug-in unit P9, diode CR1 other ends connection diode CR2 one end, two
The 1st foot of pole pipe CR2 other ends connection photoelectrical coupler U12, the 2nd feet of the 2nd foot connection plug-in unit P9 of photoelectrical coupler U12, light
The 3rd foot ground connection of electric coupler U12, the 4th foot of photoelectrical coupler U12 are connect with resistance R39 one end, and connect center control electricity
Road, resistance R39 other ends connection 3.3V power supplys.
The photoelectrical coupler U12 is TLP521-1.
The serial communication circuit is TTL RS 232 circuits.
Including heat sink 2, LED groups luminescent screen 1 is equipped in heat sink 2 for a kind of detection light source for implementing the method,
Side plate 3 is equipped in 2 periphery of heat sink, annular cover plate 4 is equipped in 3 top of side plate, in being fixed with diffusing panel 5 on annular cover plate 4；
Colour temperature, brightness acquisition chip circuit board 6 are equipped in 3 side of side plate, is equipped with and subtracts in colour temperature, 6 forepart of brightness acquisition chip circuit board
Mating plate 7, colour temperature, 6 rear portion of brightness acquisition chip circuit board are equipped with mounting base 8.
It further includes control circuit board, integrating central control circuit in the control circuit board, adjusts at colour temperature brightness calculation
Manage circuit, double constant current driver circuit for LED, colour temperature, brightness Acquisition Circuit, power circuit and serial communication circuit.
The central control circuit includes central control chip U11 and capacitance C41, wherein, the central control chip U11
The 7th foot connection capacitance C41 one end, the capacitance C41 other ends, the 8th foot of central control chip U11, central control chip U11
23rd foot, the 35th foot of central control chip U11, the 44th foot of central control chip U11 and central control chip U11 the 47th
Foot is grounded；The 9th foot of the central control chip U11, the 24th foot of central control chip U11, central control chip U11
The 48th foot of 36 feet and central control chip U11 connect 3.3V power supplys.
It adjusts colour temperature brightness calculation processing circuit and includes processing chip U9, resistance R30, resistance R32, resistance R33, resistance
R34, wherein the 1st feet of processing chip U9 connection resistance R30 one end, the 6th feet of processing chip U9 connection resistance R34 one end, place
Manage the 7th foot connection resistance R33 one end of chip U9, the 8th feet of processing chip U9 connection resistance R32 one end, the resistance R30 other ends, place
Manage the 15th foot ground connection of chip U9, the 5th feet of processing chip U9, the resistance R32 other ends, the resistance R33 other ends, the resistance R34 other end
And the 16th feet of processing chip U9 connect 3.3V power supplys.
The constant current driver circuit for LED includes LED constant current driving chip U1, capacitance C1, capacitance C3, capacitance C3, diode
D1, inductance L1, capacitance C5, capacitance C6, resistance R3, resistance R4, metal-oxide-semiconductor Q1, resistance R1, resistance R2, capacitance C2, plug-in unit P1, with
NOT gate U3, slide rheostat VR1, resistance R9, operational amplifier U4, capacitance C8, capacitance C13, capacitance C14, capacitance C15, resistance
R5, resistance R6, resistance R7, resistance R10；Wherein, the 4th foot connection capacitance C4 one end of the LED constant current driving chip U1, LED
The 3rd foot of constant-current driven chip U1 is connected with diode cathode, inductance L1 one end, the inductance L1 other ends and capacitance C5 anodes,
Capacitance C6 one end and the 1st feet of plug-in unit P1 are connected, the 2nd foot and resistance R3 one end and the slip variable resistance of LED constant current driving chip U1
Device VR1 one end is connected, and the resistance R3 other ends are connected with the S poles of resistance R4 one end and metal-oxide-semiconductor Q1, the D poles connection of metal-oxide-semiconductor Q1
The crus secunda of plug-in unit P1, the G poles of metal-oxide-semiconductor Q1 are connected with resistance R1 one end and resistance R2 one end, the resistance R1 other ends connection with
The 4th foot of NOT gate U3, NAND gate U3 the 1st, 2 feet connection central control circuit, slide rheostat VR1 other ends connection resistance R9
One end, the resistance R9 other ends are connected with the 1st feet of operational amplifier U4, the 2nd foot, the 3rd feet of operational amplifier U4 and capacitance C15 mono-
End and resistance R7 one end are connected, and the resistance R7 other ends are connected with resistance R6 one end and the capacitance C14 other ends, and resistance R6 is another
End is connected with capacitance C13 one end, resistance R10 one end and resistance R5 one end, resistance R5 other ends connection central control circuit；Institute
Capacitance C1 one end, capacitance C3 one end are stated, the capacitance C4 other ends connect 24.5V power supplys with the 5th foot of LED constant current driving chip U1,
The 5th foot of NAND gate U3, capacitance C2 one end, capacitance C8 one end and operational amplifier U4 the 8th foot connect 5V power supplys；Capacitance C1 is another
End, the capacitance C3 other ends, the 1st foot of LED constant current driving chip U1, diode D1 anodes, capacitance C5 cathode, capacitance C6 are another
End, the 4th of the resistance R4 other ends, the resistance R2 other ends, the 3rd foot of NAND gate U3, the capacitance C2 other ends, operational amplifier U4 the
Foot, the capacitance C8 other ends, the capacitance C15 other ends, the capacitance C14 other ends, the capacitance C13 other ends and the resistance R10 other ends connect
Ground.
The power circuit includes DC/DC switching regulator U5, voltage stabilizing chip U2, resistance R11, resistance R15, capacitance C16,
Capacitance C17, capacitance C18, capacitance C7, capacitance C19, capacitance C20, resistance R14, diode D2, inductance L2, capacitance C9, capacitance
C10, resistance R8, resistance R13, capacitance C11, capacitance C12, light emitting diode D3, resistance R12, wherein, the DC/DC switches are steady
The 4th foot connection capacitance C18 one end of depressor U5, resistance R11 one end connection resistance R15 one end, and central control circuit is connected,
The 5th foot of DC/DC switching regulators U5 is connected with resistance R13 one end and resistance R8 one end, and the of DC/DC switching regulators U5
6 feet are connected with capacitance C19 one end and resistance R14 one end, resistance R14 other ends connection capacitance C20 one end, and DC/DC switches are steady
The 1st foot connection capacitance C7 one end of depressor U5, the 8th foot and the capacitance C7 other ends, the diode D2 of DC/DC switching regulators U5 are born
Pole, inductance L2 one end are connected, the resistance R11 other ends, capacitance C16 one end, capacitance C17 one end and DC/DC switching regulators U5
The 2nd foot connection 24.5V power supplys；The inductance L2 other ends, the capacitance C9 other ends, the capacitance C10 other ends, the resistance R8 other ends and steady
Press the 3rd foot connection 5V power supplys of chip U2；The 2nd foot, capacitance C11 one end, capacitance C12 one end and the light-emitting diodes of voltage stabilizing chip U2
The anode of pipe D3 connects 3.3 power supplys；The resistance R15 other ends, the capacitance C16 other ends, the capacitance C17 other ends, capacitance C18 are another
End, the capacitance C19 other ends, the capacitance C20 other ends, the capacitance C10 other ends, the resistance R13 other ends, the 1st feet of voltage stabilizing chip U2, electricity
Hold the C11 other ends, the capacitance C12 other ends and resistance R12 other ends ground connection.
The colour temperature, brightness Acquisition Circuit include plug-in unit P9, diode CR1, diode CR2, photoelectrical coupler U12 and electricity
The 1st foot connection diode CR1 one end of resistance R39, wherein plug-in unit P9, diode CR1 other ends connection diode CR2 one end, two
The 1st foot of pole pipe CR2 other ends connection photoelectrical coupler U12, the 2nd feet of the 2nd foot connection plug-in unit P9 of photoelectrical coupler U12, light
The 3rd foot ground connection of electric coupler U12, the 4th foot of photoelectrical coupler U12 are connect with resistance R39 one end, and connect center control electricity
Road, resistance R39 other ends connection 3.3V power supplys.
The serial communication circuit is TTL RS 232 circuits.
The above, only preferable possible embodiments of the invention, not to limit to the scope of the claims of the present invention, thus it is all
The equivalent step and structure change made with present specification, are all contained in protection scope of the present invention.
Claims (10)
- A kind of 1. method for detecting light source and quickly adjusting colour temperature brightness, which is characterized in that it includes the following steps：(1) light source is set, is equipped with LED group luminescent screens in the light source, the LED groups luminescent screen is by multiple high color temperature lamp beads and multiple low Colour temperature lamp bead is staggered composition；(2) control circuit board is set, and integrating central control circuit in the control circuit board adjusts colour temperature brightness calculation processing electricity Road, double constant current driver circuit for LED, colour temperature, brightness Acquisition Circuit, power circuit and serial communication circuit；(3) it is embedded in brightness in the adjusting colour temperature brightness calculation processing circuit and colour temperature quickly adjusts algorithm；(4) it is powered and starts to work, set required brightness value and color temperature value, LED group luminescent screens shine；(5) the quick adjusting of brightness value：Central control circuit control output current gradually increases, and increases amplitude as 1mA, color Temperature, brightness Acquisition Circuit are acquired every brightness value for increasing 1mA, adjust colour temperature brightness calculation processing circuit first according to electricity Influence coefficient of the stream output variation to brightness value, calculate current flow influences coefficient L to brightness valueaFormula be：La=Ln+1-LnIn formula：N is present current value, and n+1 is that current flow increases the value after 1mA, Ln+1Increase for current flow bright after 1mA Angle value, LnBrightness value for current flow；Coefficient and present intensity value and predetermined luminance value are influenced on brightness value further according to the current flow calculated, calculated The current value I adjusted is needed, the calculation formula of brightness value I is：In formula：LsetFor predetermined luminance value, L is present intensity value, LaCoefficient is influenced on brightness value for current flow；So as to fulfill quick adjustment output current, and then it is rapidly achieved predetermined luminance value；(6) the quick adjusting of color temperature value：After the brightness value for obtaining setting, colour temperature, brightness Acquisition Circuit acquire current colour temperature, if working as Preceding colour temperature is more than preset value, then high color temperature lamp bead power is reduced by central control circuit, until reaching preset color temperature value；If work as Preceding colour temperature is less than preset value, then reduces low colour temperature lamp bead power by central control circuit, until reaching preset color temperature value, completes Quick adjusting to colour temperature.
- 2. the method that detection light source according to claim 1 quickly adjusts colour temperature brightness, which is characterized in that the light source packet Heat sink is included, LED group luminescent screens are equipped in heat sink, side plate is equipped in heat sink periphery, annular is equipped in side plate top Cover board, in being fixed with diffusing panel on annular cover plate；Colour temperature, brightness acquisition chip circuit board are equipped in side plate side, in colour temperature, bright It spends acquisition chip circuit prelaminar part and is equipped with light damping plate, colour temperature, brightness acquisition chip circuit postlaminar part are equipped with mounting base.
- 3. the method that detection light source according to claim 1 quickly adjusts colour temperature brightness, which is characterized in that the center control Circuit processed includes central control chip U11 and capacitance C41, wherein, the 7th foot connection capacitance C41 of the central control chip U11 One end, the capacitance C41 other ends, the 8th foot of central control chip U11, the 23rd foot of central control chip U11, center control core The 47th foot ground connection of the 35th foot of piece U11, the 44th foot of central control chip U11 and central control chip U11；The center control The 9th foot, the 24th foot of central control chip U11, the 36th foot of central control chip U11 and the center control core of coremaking piece U11 The 48th foot of piece U11 connects 3.3V power supplys.
- 4. the method that detection light source according to claim 1 quickly adjusts colour temperature brightness, which is characterized in that it is bright to adjust colour temperature It spends calculation processing circuit and includes processing chip U9, resistance R30, resistance R32, resistance R33, resistance R34, wherein the processing chip The 1st feet of U9 connection resistance R30 one end, the 6th feet of processing chip U9 connection resistance R34 one end, the 7th feet of processing chip U9 connection resistance R33 one end, the 8th feet of processing chip U9 connection resistance R32 one end, the resistance R30 other ends, the 15th feet of processing chip U9 ground connection, place The 5th feet of reason chip U9, the resistance R32 other ends, the resistance R33 other ends, the resistance R34 other end and the 16th feet of processing chip U9 connect 3.3V power supply.
- 5. the method that detection light source according to claim 1 quickly adjusts colour temperature brightness, which is characterized in that the LED is permanent It flows driving circuit and includes LED constant current driving chip U1, capacitance C1, capacitance C3, capacitance C3, diode D1, inductance L1, capacitance C5, Capacitance C6, resistance R3, resistance R4, metal-oxide-semiconductor Q1, resistance R1, resistance R2, capacitance C2, plug-in unit P1, NAND gate U3, slide rheostat VR1, resistance R9, operational amplifier U4, capacitance C8, capacitance C13, capacitance C14, capacitance C15, resistance R5, resistance R6, resistance R7, Resistance R10；Wherein, the 4th foot connection capacitance C4 one end of the LED constant current driving chip U1, the of LED constant current driving chip U1 3 feet are connected with diode cathode, inductance L1 one end, the inductance L1 other ends and capacitance C5 anodes, capacitance C6 one end and plug-in unit P1 1st foot is connected, and the 2nd foot of LED constant current driving chip U1 is connected with resistance R3 one end and slide rheostat VR1 one end, electricity The resistance R3 other ends are connected with the S poles of resistance R4 one end and metal-oxide-semiconductor Q1, the crus secunda of the D poles connection plug-in unit P1 of metal-oxide-semiconductor Q1, MOS The G poles of pipe Q1 are connected with resistance R1 one end and resistance R2 one end, the 4th foot of resistance R1 other ends connection NAND gate U3, and non- Door U3 the 1st, 2 feet connection central control circuit, slide rheostat VR1 other ends connection resistance R9 one end, the resistance R9 other ends It is connected with the 1st feet of operational amplifier U4, the 2nd foot, the 3rd feet of operational amplifier U4 and capacitance C15 one end and resistance R7 one end phase Connection, the resistance R7 other ends are connected with resistance R6 one end and the capacitance C14 other ends, the resistance R6 other ends and capacitance C13 one end, Resistance R10 one end and resistance R5 one end are connected, resistance R5 other ends connection central control circuit；Described capacitance C1 one end, electricity Holding C3 one end, the capacitance C4 other ends connect 24.5V power supplys with the 5th foot of LED constant current driving chip U1, the 5th foot of NAND gate U3, 8th foot of capacitance C2 one end, capacitance C8 one end and operational amplifier U4 connects 5V power supplys；The capacitance C1 other ends, the capacitance C3 other ends, The 1st foot, diode D1 anodes, capacitance C5 cathode, the capacitance C6 other ends, the resistance R4 other ends, the electricity of LED constant current driving chip U1 Hinder the R2 other ends, the 3rd foot of NAND gate U3, the capacitance C2 other ends, the 4th foot of operational amplifier U4, the capacitance C8 other ends, capacitance The C15 other ends, the capacitance C14 other ends, the capacitance C13 other ends and the resistance R10 other ends are grounded.
- 6. the method that detection light source according to claim 1 quickly adjusts colour temperature brightness, which is characterized in that the power supply electricity Road includes DC/DC switching regulator U5, voltage stabilizing chip U2, resistance R11, resistance R15, capacitance C16, capacitance C17, capacitance C18, electricity Hold C7, capacitance C19, capacitance C20, resistance R14, diode D2, inductance L2, capacitance C9, capacitance C10, resistance R8, resistance R13, electricity Hold C11, capacitance C12, light emitting diode D3, resistance R12, wherein, the 4th foot connection capacitance of the DC/DC switching regulators U5 C18 one end, resistance R11 one end connection resistance R15 one end, and central control circuit is connected, the 5th of DC/DC switching regulators U5 the Foot is connected with resistance R13 one end and resistance R8 one end, the 6th foot and capacitance C19 one end and the resistance of DC/DC switching regulators U5 R14 one end is connected, resistance R14 other ends connection capacitance C20 one end, the 1st foot connection capacitance C7 of DC/DC switching regulators U5 One end, the 8th foot of DC/DC switching regulators U5 are connected with the capacitance C7 other ends, diode D2 cathode, inductance L2 one end, electricity Hinder the 2nd foot connection 24.5V power supplys of the R11 other ends, capacitance C16 one end, capacitance C17 one end and DC/DC switching regulators U5；Electricity Feel the L2 other ends, the capacitance C9 other ends, the capacitance C10 other ends, the resistance R8 other ends and voltage stabilizing chip U2 the 3rd foot connection 5V electricity Source；The 2nd foot of voltage stabilizing chip U2, capacitance C11 one end, capacitance C12 one end and light emitting diode D3 anode connect 3.3 power supplys； The resistance R15 other ends, the capacitance C16 other ends, the capacitance C17 other ends, the capacitance C18 other ends, the capacitance C19 other ends, capacitance C20 The other end, the capacitance C10 other ends, the resistance R13 other ends, the 1st feet of voltage stabilizing chip U2, the capacitance C11 other ends, capacitance C12 are another End and resistance R12 other ends ground connection.
- 7. the method that detection light source according to claim 1 quickly adjusts colour temperature brightness, which is characterized in that the colour temperature, Brightness Acquisition Circuit includes plug-in unit P9, diode CR1, diode CR2, photoelectrical coupler U12 and resistance R39, wherein plug-in unit P9 The 1st foot connection diode CR1 one end, diode CR1 other ends connection diode CR2 one end, the connection of the diode CR2 other ends The 1st foot of photoelectrical coupler U12, the 2nd feet of the 2nd foot connection plug-in unit P9 of photoelectrical coupler U12, the 3rd foot of photoelectrical coupler U12 Ground connection, the 4th foot of photoelectrical coupler U12 are connect, and connect central control circuit with resistance R39 one end, and the resistance R39 other ends connect Connect 3.3V power supplys.
- 8. the method that detection light source according to claim 1 quickly adjusts colour temperature brightness, which is characterized in that the serial ports leads to News circuit is TTL RS 232 circuits.
- 9. a kind of detection light source for implementing one of claim 1~8 the method, which is characterized in that it includes heat sink, in scattered Hot plate is equipped with LED group luminescent screens, and side plate is equipped in heat sink periphery, annular cover plate is equipped in side plate top, in ring cover Diffusing panel is fixed on plate；Colour temperature, brightness acquisition chip circuit board are equipped in side plate side, in colour temperature, brightness acquisition chip electricity Road prelaminar part is equipped with light damping plate, and colour temperature, brightness acquisition chip circuit postlaminar part are equipped with mounting base.
- 10. detection light source according to claim 9, which is characterized in that it further includes control circuit board, the control circuit board Upper integrating central control circuit adjusts colour temperature brightness calculation processing circuit, double constant current driver circuit for LED, colour temperature, brightness acquisition electricity Road, power circuit and serial communication circuit.
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