CN111372347A - Two-wire system LED lamp dimming and color temperature adjusting illumination system and method - Google Patents
Two-wire system LED lamp dimming and color temperature adjusting illumination system and method Download PDFInfo
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Abstract
A two-wire system LED lamp dimming and color temperature adjusting illumination system comprises a two-wire system LED controller and a plurality of LED constant current light sources, wherein two complementary pulse width modulation driving signal output ends of the two-wire system LED controller are respectively connected with two ends of the LED constant current light sources; and the LED constant-current light sources are connected in parallel. The invention also provides a dimming and color temperature adjusting method for the two-wire system LED lamp, the intelligent control of the dimming and color temperature adjustment of the multi-lamp two-wire system can be realized by using the double-color lamp matched with the system, and the synchronous intelligent dimming of the multi-lamp of the high-voltage drive-free LED lamp can be realized to realize non-stroboscopic illumination.
Description
Technical Field
The invention relates to the technical field of LED illumination, in particular to a dimming and color temperature adjusting illumination system and method for an LED lamp.
Background
LED lighting is replacing traditional incandescent and fluorescent lighting. The LED lighting has the advantages of energy conservation, safety, environmental protection, long service life, high response speed and the like.
The LED light-emitting device works under direct current, and the current illumination LED lamps can be used by performing alternating current-direct current conversion (drivers) in direct alternating current power supply lamps. Because each lamp needs driver control, the life of the LED lamp can be influenced by the driver, and the voltage reduction driving mode has large loss and low efficiency, and the driver is easy to damage.
The LED lamp service life short board is a controller, the synchronous code matching of the lamp-by-lamp intelligent control module is complicated to realize the intelligent control of multi-lamp light modulation and color temperature modulation, and meanwhile, the controller in each lamp is complicated and is easily influenced by heat dissipation conditions and is very easy to damage.
Novel high pressure exempts from to drive LED lamp in the existing market can be used for the alternating current direct lighting but has the stroboscopic, works simultaneously under the alternating current and can't realize many lamps intelligent synchro control.
The current market realizes that the color temperature is regulated by three-wire system (the LED lamp drive with two color temperatures needs a common end loop), although the three-wire system drive can realize the color temperature regulation, the three-wire system drive can not be applied to the LED lamps with standard interfaces of most two-wire system wiring in the existing market (standard screw sockets E40, E27 and E14; standard sockets B22 and B15; fluorescent lamps T8, T5 and T4 interfaces and the like).
Therefore, need to research and develop an integrative LED lighting system of collection power supply, intelligent control that can go on novel high voltage direct current LED, use the double-colored lamp light source supporting with the system can realize that many lamps two-wire are modulated light and are transferred colour temperature intelligent control, can compatible realization present high pressure exempt from to drive LED lamp many lamps synchronous intelligent light modulation simultaneously accomplish not have stroboscopic illumination simultaneously.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide a two-wire system LED lamp dimming and color temperature adjusting illumination system and method.
In order to achieve the above object, the invention provides a two-wire system LED lamp dimming and color temperature adjusting illumination system, comprising a two-wire system LED controller and a plurality of LED constant current light sources, wherein,
two complementary pulse width modulation driving signal output ends of the two-wire system LED controller are respectively connected with two ends of the LED constant current light source;
and the LED constant-current light sources are connected in parallel.
Further, the two-wire system LED controller further comprises a microprocessor module, a first half-bridge driving circuit, a second half-bridge driving circuit, an infrared receiving module, a radio frequency receiving module, a light sensor module and a voice recognition module, wherein,
the infrared receiving module, the radio frequency receiving module, the optical sensor module and the voice recognition module are respectively connected with the signal input end of the microprocessor module;
the pulse width modulation signal output end of the microprocessor module is respectively connected with the input ends of the first half-bridge driving circuit and the second half-bridge driving circuit;
the pulse width modulation driving signal output by the first half-bridge driving circuit is connected to one end of the LED constant current light source;
and the pulse width modulation driving signal output by the second half-bridge driving circuit is connected to the other end of the LED constant current light source.
Further, the microprocessor module adjusts duty ratios of pulse width modulation driving signals output by the first half-bridge driving circuit and the second half-bridge driving circuit according to the infrared control signal received by the infrared receiving module, and adjusts light, color and light.
Further, the microprocessor module adjusts duty ratios of pulse width modulation driving signals output by the first half-bridge driving circuit and the second half-bridge driving circuit according to the radio frequency control signal received by the radio frequency receiving module, and adjusts light, color and light.
Further, the microprocessor module adjusts duty ratios of pulse width modulation driving signals output by the first half-bridge driving circuit and the second half-bridge driving circuit according to the ambient illuminance value collected by the light sensor module, and adjusts light, color and light.
Further, the microprocessor module adjusts duty ratios of the pulse width modulation driving signals output by the first half-bridge driving circuit and the second half-bridge driving circuit according to the user voice signal recognized by the voice recognition module, and adjusts light, color and light on and off.
Furthermore, the pulse width modulation driving signal output by the first half-bridge driving circuit and the pulse width modulation driving signal of the second half-bridge driving circuit supply power to drive the working voltage range to be 12 VDC-500 VDC.
Furthermore, the LED constant current light source is formed by connecting a cold light LED string and a warm light LED string in parallel in an opposite phase mode, and the cold light LED string and the warm light LED string are respectively connected with a constant current device in series.
Furthermore, the LED constant-current light source comprises a constant-current down lamp LED light source, a constant-current track lamp LED light source, a constant-current ceiling lamp LED light source, a constant-current spot lamp light source and a constant-current bulb lamp LED light source.
In order to achieve the purpose, the color mixing method of the two-wire system LED lamp provided by the invention comprises the following steps of receiving a control signal of infrared remote control or radio frequency remote control, synchronously shifting the effective high level of two paths of complementary PWM signals output by the two-wire system LED controller to the right or to the left, keeping the brightness of an LED constant-current light source unchanged, and changing the color temperature to warm color light or cold color light.
In order to achieve the purpose, the two-wire system LED lamp dimming method provided by the invention comprises the following steps of receiving a control signal of an infrared remote control radio frequency remote control, synchronously and reversely changing the duty ratio of two paths of complementary PWM signals output by a two-wire system LED controller according to a proportion, keeping the color temperature of an LED constant-current light source unchanged, and dimming the brightness from bright to dark or from dark to bright so as to realize dimming under the condition of the color temperature with any color mixing ratio.
The two-wire system LED lamp dimming and color temperature adjusting illumination system and the method have the following beneficial effects:
1. the system can realize synchronous and intelligent light modulation and color temperature regulation by adopting PWM direct current power supply, and the lamp has high light efficiency and is not easy to damage because the light source only needs a high-voltage constant-current driver.
2. Under the condition of no voltage reduction loss, wired and wireless function control of high-voltage linear dimming and color temperature regulation of the LED lamp is realized, fragmented intelligent control in the existing market is changed into system intelligent control, and standardization of future LED illumination power supply, intelligent control architecture, nominal power (wattage) production of the LED lamp and the like is realized.
3. The direct-current two-wire system multi-lamp parallel synchronous dimming color temperature-adjusting lamp has high luminous efficiency, does not have voltage reduction loss, can meet the existing power supply connection mode of various lamps at various lamp sockets with the existing alternating-current two-wire system connection rail, and realizes the dimming color temperature adjustment and intelligent control of the LED lamp.
4. The driving control circuit only provides constant high-voltage direct current after 220V rectification, and the LED lamp has the advantages that all lamps only do simple internal series constant current without voltage reduction loss, the cost is low, the reliability is high, the service life is long, the power of the connected lamps is not limited to be similar to the access mode of the existing alternating current illuminating lamp, and the LED lamp has the characteristic that the alternating current is simply accessed into the lamp under the condition that intelligent control is guaranteed to be met.
5. The system is used for centralized drive control, the problem that a single lamp control controller is easily damaged and short boards are not driven in the lamp is solved, functional dimming and color temperature adjustment control is not needed, a wireless link is used for code matching in a lamp-by-lamp synchronous mode, and unified intelligent control of public lighting is facilitated.
6. The method can be used for controlling all the linear drive-free LED lamps at present.
7. The intelligent multi-system control system can be used as a bus control power supply for AC-DC conversion to full-wave pulsating DC output, step-by-step intelligent multi-system control is realized without AC-DC conversion, and intelligent control is more concise and reliable.
8. The two-wire system LED lamp dimming and color temperature adjusting illumination system and the method not only realize the adjustment of the brightness of the light source under the condition of keeping any color temperature unchanged, but also realize the adjustment of the color temperature of the light source under the condition of keeping any brightness unchanged. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a block diagram of a two-wire LED lamp dimming and color temperature adjusting lighting system according to the present invention;
FIG. 2 is a circuit diagram of an LED constant current light source according to an embodiment of the present invention;
FIG. 3 is a circuit diagram of another embodiment of an LED constant current light source according to the present invention;
FIG. 4 is a schematic diagram of a two-wire LED controller in connection with an LED light source according to the present invention;
FIG. 5 is a schematic diagram of a PWM signal output by a two-wire LED controller according to the present invention;
FIG. 6 is a schematic diagram of a waveform variation of a warm light enhancement PWM signal according to the present invention;
FIG. 7 is a diagram illustrating a variation of a luminescence enhancement PWM signal waveform according to the present invention;
fig. 8 is a schematic diagram illustrating a waveform change of a luminance reduction PWM signal according to the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example 1
Fig. 1 is a block diagram of a two-wire system LED lamp dimming and color temperature adjusting illumination system according to the present invention, and as shown in fig. 1, the two-wire system LED lamp dimming and color temperature adjusting illumination system of the present invention comprises a two-wire system LED controller 10 and a plurality of LED constant current light sources 20, wherein,
a two-wire LED controller 10 having two pulse width modulation drive signal output terminals (a terminal a and a terminal B);
the LED constant current light sources 20 connected in parallel have one end connected to the a end of the two-wire LED controller 10 and the other end connected to the B end of the two-wire LED controller 10.
In one embodiment of the present invention, the two-wire LED controller 10 comprises a microprocessor module 101, a first half-bridge driving circuit 102, a second half-bridge driving circuit 102, an infrared receiving module 104, a radio frequency receiving module 105, a light sensor module 106, and a voice recognition module 107, wherein,
the infrared receiving module 104 is connected to an input terminal KIN1 of the microprocessor module 101, and transmits the received infrared remote control signal to the microprocessor module 101.
In this embodiment, the infrared remote control signal includes: control the on/off signal of the LED light source, the light adjusting signal, the color temperature adjusting signal, etc.
The rf receiving module 105 is connected to an input terminal KIN2 of the microprocessor module 101, and transmits the received rf remote control signal to the microprocessor module 101.
In this embodiment, the radio frequency remote control signal includes: and controlling on and off signals of the LED light source, light adjusting signals, color temperature adjusting signals, writing of light sensing brightness and color temperature comparison values and the like.
Light sensor module 106 is coupled to microprocessor module 101 at input KIN3 and transmits the received ambient illuminance value to microprocessor module 101.
Speech recognition module 107 is connected to input KIN4 of microprocessor module 101 and transmits the recognized speech signal of the user to microprocessor module 101.
A microprocessor module 101, which receives the infrared control signal from the infrared receiving module 104, the radio frequency control signal from the radio frequency receiving module 105, the ambient illuminance value from the light sensor module 106, and the user voice signal from the voice recognition module 107, respectively, and transmits the generated pulse width modulation signals (PWM10 and PWM20) to the first half-bridge driving circuit 102 and the second half-bridge driving circuit 102, respectively.
In this embodiment, the PWM10 signal output terminal of the microprocessor module 101 is connected to the input terminal of the first half-bridge driving circuit 102; the PWM20 signal output terminal thereof is connected to the input terminal of the second half-bridge drive circuit 103.
And the first half-bridge driving circuit 102 converts the PWM10 signal sent by the microprocessor module 101 into a first pulse width modulation driving signal, and outputs the first pulse width modulation driving signal to one end of the LED constant current light source 20 through the a end.
And the second half-bridge driving circuit 103 converts the PWM20 signal sent by the microprocessor module 101 into a second pulse width modulation driving signal, and outputs the second pulse width modulation driving signal to the other end of the LED constant current light source 20 through the terminal B.
In this embodiment, the microprocessor module 101 adjusts duty ratios of pulse width modulation driving signals output by the first half-bridge driving circuit and the second half-bridge driving circuit according to the infrared control signal received by the infrared receiving module 104, so as to achieve dimming, color temperature adjustment, lamp turning on and off, and the like.
In this embodiment, the microprocessor module 101 adjusts duty ratios of the pulse width modulation driving signals output by the first half-bridge driving circuit and the second half-bridge driving circuit according to the radio frequency control signal received by the radio frequency receiving module 105, so as to achieve dimming, color temperature adjustment, lamp turning on and off, and the like.
In this embodiment, the microprocessor module 101 automatically adjusts the duty ratio of the pulse width modulation driving signals output by the first half-bridge driving circuit 102 and the second half-bridge driving circuit 103 and adjusts the color temperature and the brightness according to the comparison between the ambient illuminance value collected by the light sensor module 106 and the healthy illumination standard value set inside (the illumination standard value set inside the microprocessor module can be modified through the RF wireless link).
In this embodiment, the microprocessor module 101 automatically adjusts duty ratios of pulse width modulation driving signals output by the first half-bridge driving circuit 102 and the second half-bridge driving circuit 102 according to a user voice signal acquired by the voice recognition module 107, and adjusts color temperature, brightness, turning on and turning off a lamp, and the like.
Fig. 2 is a circuit diagram of an embodiment of an LED constant current light source according to the present invention, as shown in fig. 2, the LED constant current light source of the present invention is composed of a cold light LED string and a warm light LED string connected in parallel in reverse phase, in each of the cold light LED string and the warm light LED string, a constant current device such as a constant current chip or a constant current diode is connected in series, so that each LED string has a single constant current, and the voltage value at both ends of the LED constant current light source determines the number of LEDs connected in series in each string.
Fig. 3 is a circuit diagram illustrating an internal circuit of another embodiment of the LED constant current light source according to the present invention, as shown in fig. 3, the LED constant current light source is formed by connecting two strings of cold light LEDs in series-parallel and connecting two strings of warm light LEDs in series-parallel and then connecting the two strings of warm light LEDs in reverse-parallel.
In order to realize the multi-series parallel connection of the illumination cold light LED strings of the lamps with different powers (lamps with different wattages) and the multi-series parallel connection of the warm light LED strings, and then the reverse parallel connection, the LED constant current light sources with different specifications can be produced.
In an embodiment of the present invention, the LED constant current light source 20 includes various constant current light sources such as a constant current down lamp LED light source, a constant current track lamp LED light source, a constant current ceiling lamp LED light source, a constant current spot light source, and a constant current bulb lamp LED light source.
The LED constant-current light source 20 only has current limiting and no controller, has high luminous efficiency and no voltage reduction loss, is simple in lamp, has no driving and long service life, is convenient for standardized production, does not need to consider the matching problem of the lamp and the controller (does not need to consider the output voltage range of the controller and the parallel current problem of the LED lamp string) for consumption and use by a user, and can be connected with the installed lamp at will.
Fig. 4 is a schematic diagram of the connection between a two-wire LED controller and an LED constant current light source according to the present invention, as shown in fig. 4, a first half-bridge driving circuit 102 and a second half-bridge driving circuit 103, each including an upper bridge arm and a lower bridge arm,
the upper bridge arm of the first half-bridge driving circuit 102 has a pulse width modulation signal input terminal and a power input terminal (+ V), and the lower bridge arm of the first half-bridge driving circuit 102 has a pulse width modulation signal input terminal and a ground terminal (GND); the pulse width modulation signal input ends of the upper and lower bridge arms of the first half-bridge driving circuit 102 are connected with the PWM10 signal output end of the microprocessor module 101; the output end (end a) of the pwm driving signal of the first half-bridge driving circuit 102 is connected to one end of the LED constant current light source.
The upper arm of the second half-bridge drive circuit 103 has a pulse width modulation signal input terminal and a power supply input terminal (+ V), and the lower arm of the second half-bridge drive circuit 103 has a pulse width modulation signal input terminal and a ground terminal (GND); the pulse width modulation signal input ends of the upper and lower bridge arms of the second half-bridge driving circuit 103 are connected with the PWM20 signal output end of the microprocessor module 101; the output end (end B) of the pulse width modulation driving signal of the second half-bridge driving circuit 103 is connected with the other end of the LED constant current light source.
In this embodiment, the power input (+ V) is 220V ac, which is obtained by rectification, or a low-voltage dc can be provided by a switching power supply, and the power supply driving voltage range usable in this embodiment is 12VDC to 500 VDC. The voltage operating range depends on the withstand voltage range of the half-bridge drive.
Fig. 5 is a schematic diagram of PWM signals output by the two-wire LED controller according to the present invention, as shown in fig. 5, in the case of neutral light, the duty ratios of the output signals of the terminals a and B are both 50%, the LED brightness is 100%, the two paths output by the terminals a and B of the two-wire LED controller are complementary pulse width modulation driving signals, one period of the pulse is T, within one period,
the output of the end A is high voltage, the output of the end B is low voltage, and the state is a state I; in the same period, the output of the end A is low voltage, the output of the end B is high voltage, and the state is two; provided that state one plus state two equals 100%, i.e., T ═ X + (T-X). When the duty ratio of the pulse width modulation driving signal output by the A end and the pulse width modulation driving signal output by the B end is changed, the purpose of color temperature adjustment can be achieved.
Example 2
The toning temperature method of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 5, the duty ratio of the a-terminal signal and the B-terminal signal is 50%, and the LED brightness is 100% of neutral light.
When the brightness is not changed, the duty ratios of the A end and the B end are synchronously and reversely changed in proportion, and the purpose of color temperature regulation can be achieved. The warm light is x, the cool light is y, and n is the number of steps. When the value of x of the A end is changed by receiving external input, the value of y is changed by the B end in a follow-up manner, so that the effective high levels of the A end and the B end synchronously move left or right, the color temperature can be adjusted by the color mixing ratio of the A end and the B end, and the variable value of the A end and the B end is delta x-y-x/n.
Warm light enhancement variation:
change of the level waveform at the a end: ax ═ x + Δ x- - - - - - - - - - - - - - - - - - (formula 1)
B-end level waveform change: y-delta y- (2)
When receiving an external input control (such as an infrared remote controller or a radio frequency remote controller), the effective high levels of the signals output by the terminals a and B are synchronously shifted to the right, the color temperature of the LED constant current light source 20 is gradually changed from neutral light to warm light, and at this time, the warm light x is increased and the cold light y is decreased, as shown in fig. 6.
Luminescence enhancement change:
change of the level waveform at the a end: ax ═ x- Δ x- - - - - - - - - - - - - - - - - - (formula 3)
B-end level waveform change: y + Delay- (4-type)
When receiving an external input control (such as an infrared remote controller or a radio frequency remote controller), the effective high levels of the output signals of the terminals a and B are synchronously shifted to the left, the color temperature of the LED constant-current light source 20 is gradually changed from neutral light to cold light, and at this time, the warm light x is reduced and the cold light y is increased, as shown in fig. 7.
Conditions are as follows: ax + By ≦ T; t is the period at a given frequency.
Example 3
The dimming method of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 5, the duty ratios of the output signals at the a terminal and the B terminal are both 50%, and the LED brightness is 100% of neutral light.
When the color temperature is not changed, the duty ratios of the A end and the B end are synchronously changed in the same direction according to proportion, and the aim of dimming can be achieved. The warm light is x, the cool light is y, and n is the number of steps. When the value of x of the output signal of the A end is changed by receiving external input, the value of y of the output signal of the B end is changed along with the change of the value of the x, and the variable values of the A end and the B end are respectively delta x-x/n and delta y-y/n.
Brightness enhancement variation:
change of the level waveform at the a end: ax ═ x + Δ x- - - - - - - - - - - - - - - - - - (formula 5)
B-end level waveform change: y + deltay-6
Luminance decrease change:
change of the level waveform at the a end: ax ═ x- Δ x- - - - - - - - - - - - - - - - - - (formula 7)
B-end level waveform change: y- Δ y- (8-type)
Conditions are as follows: ax + By ≦ T; t is the period at a given frequency.
For example: when the duty ratio of the output signal of the A end is fixed to 60 percent; the duty ratio of the output signal of the terminal B is fixed to 40% (the color temperature is fixed and the brightness is defined as 100%), and at the moment, the duty ratios of the output signals of the terminals A and B are changed in the same proportion. Namely, the duty ratio of the output signal at the end a is 30%, and the duty ratio of the output signal at the end B is 20%, the color temperature is not changed but the brightness is changed to be reduced to 50%, as shown in fig. 8.
Those of ordinary skill in the art will understand that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A two-wire system LED lamp dimming and color temperature adjusting illumination system is characterized by comprising a two-wire system LED controller and a plurality of LED constant-current light sources, wherein,
two complementary pulse width modulation driving signal output ends of the two-wire system LED controller are respectively connected with two ends of the LED constant current light source;
and the LED constant-current light sources are connected in parallel.
2. The two-wire LED lamp dimming and color temperature adjusting illumination system according to claim 1, wherein the two-wire LED controller further comprises a microprocessor module, a first half-bridge driving circuit, a second half-bridge driving circuit, an infrared receiving module, a radio frequency receiving module, a light sensor module, and a voice recognition module, wherein,
the infrared receiving module, the radio frequency receiving module, the optical sensor module and the voice recognition module are respectively connected with the signal input end of the microprocessor module;
the pulse width modulation signal output end of the microprocessor module is respectively connected with the input ends of the first half-bridge driving circuit and the second half-bridge driving circuit;
the pulse width modulation driving signal output by the first half-bridge driving circuit is connected to one end of the LED constant current light source;
and the pulse width modulation driving signal output by the second half-bridge driving circuit is connected to the other end of the LED constant current light source.
3. The two-wire system LED lamp dimming and color temperature adjusting illumination system according to claim 2, wherein the microprocessor module adjusts duty ratios of pulse width modulation driving signals output by the first half-bridge driving circuit and the second half-bridge driving circuit according to the infrared control signal received by the infrared receiving module, and adjusts light, color temperature and turns on/off the lamp.
4. The two-wire LED lamp dimming and color temperature adjusting illumination system according to claim 2, wherein the microprocessor module adjusts duty ratios of the pwm driving signals outputted from the first half-bridge driving circuit and the second half-bridge driving circuit according to the rf control signal received by the rf receiving module, so as to dim, color temperature and turn on/off the lamp.
5. The two-wire LED lamp dimming and color temperature adjusting illumination system according to claim 2, wherein the microprocessor module adjusts duty ratios of the pulse width modulation driving signals outputted from the first half-bridge driving circuit and the second half-bridge driving circuit according to the ambient illuminance value collected by the light sensor module, and adjusts the light, the color temperature, and the on/off of the lamp.
6. The two-wire system LED lamp dimming and color temperature adjusting lighting system according to claim 2, wherein the microprocessor module adjusts duty ratios of the pulse width modulation driving signals output by the first half-bridge driving circuit and the second half-bridge driving circuit according to the user voice signal recognized by the voice recognition module, and adjusts light, color temperature and turns on/off the lamp.
7. The two-wire LED lamp dimming and color temperature adjusting illumination system according to claim 2, wherein the pwm driving signal outputted from the first half-bridge driving circuit and the pwm driving signal outputted from the second half-bridge driving circuit supply driving voltage ranging from 12VDC to 500 VDC.
8. The two-wire system LED lamp dimming and color temperature adjusting illumination system as claimed in claim 1, wherein the LED constant current light source is composed of a cold light LED string and a warm light LED string which are connected in parallel in an anti-phase manner, and the cold light LED string and the warm light LED string are respectively connected with a constant current device in series.
9. The two-wire system LED lamp dimming and color temperature adjusting illumination system according to claim 1, wherein the LED constant-current light source comprises a constant-current down lamp LED light source, a constant-current track lamp LED light source, a constant-current ceiling lamp LED light source, a constant-current spot lamp light source and a constant-current bulb lamp LED light source.
10. A two-wire system LED lamp color temperature adjusting method adopts the two-wire system LED lamp color temperature adjusting lighting system according to any one of claims 1-8, and is characterized by comprising the following steps of receiving a control signal of infrared remote control or radio frequency remote control; synchronously shifting the effective high level of two paths of complementary pulse width modulation driving signals output by the two-wire system LED controller to the right or to the left; the LED constant-current light source keeps the brightness unchanged, and the color temperature changes towards warm color light or changes towards cold color light.
11. A two-wire system LED lamp dimming and color temperature adjusting illumination system according to any one of claims 1 to 8, comprising the steps of receiving a control signal of an infrared remote control or a radio frequency remote control; the duty ratio of two paths of complementary pulse width modulation driving signals output by the two-wire system LED controller is synchronously changed in the opposite direction according to proportion; the LED constant-current light source keeps the color temperature unchanged, the brightness is changed from bright to dark or from dark to bright, and dimming under the condition of the color temperature with any color mixing ratio is realized.
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| CN202010295218.XA CN111372347A (en) | 2020-04-15 | 2020-04-15 | Two-wire system LED lamp dimming and color temperature adjusting illumination system and method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209072768U (en) * | 2018-08-29 | 2019-07-05 | 深圳市汇铭微科技有限公司 | The complementary toning temperature controller with an automatic light meter of two lines |
| CN211656441U (en) * | 2020-04-15 | 2020-10-09 | 青岛蓝芯电子科技有限公司 | Two-wire system LED lamp is adjusted luminance and is mixed colours and warm lighting system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209072768U (en) * | 2018-08-29 | 2019-07-05 | 深圳市汇铭微科技有限公司 | The complementary toning temperature controller with an automatic light meter of two lines |
| CN211656441U (en) * | 2020-04-15 | 2020-10-09 | 青岛蓝芯电子科技有限公司 | Two-wire system LED lamp is adjusted luminance and is mixed colours and warm lighting system |
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