CN110719667A - LED lamp synchronous control device and method - Google Patents
LED lamp synchronous control device and method Download PDFInfo
- Publication number
- CN110719667A CN110719667A CN201911066385.0A CN201911066385A CN110719667A CN 110719667 A CN110719667 A CN 110719667A CN 201911066385 A CN201911066385 A CN 201911066385A CN 110719667 A CN110719667 A CN 110719667A
- Authority
- CN
- China
- Prior art keywords
- light emitting
- module
- white light
- resistor
- level signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- H05B44/00—Circuit arrangements for operating electroluminescent light sources
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The embodiment of the invention provides a device and a method for synchronously controlling LED lamps. The LED lamp synchronous control device comprises a white light emitting circuit, a synchronous control module and a color light emitting circuit; the white light emitting circuit comprises a white light emitting module and a white light driving module; the color light emitting circuit comprises a color light emitting module, a controllable switch and a color light driving module. The white light emitting circuit is electrically connected with the synchronous control module, and the output end of the synchronous control module is electrically connected with the control end of the controllable switch. The white light emitting circuit generates a driving signal for driving the white light emitting module to emit light; the synchronous control module receives the driving signal and processes the driving signal so as to output a low level signal and cut off the controllable switch when the white light driving module controls the white light emitting module to be not switched on, thereby leading the color light emitting module in the color light emitting circuit to be not switched on; when the white light driving module controls the white light emitting module to be conducted, a high level signal is output, and the controllable switch is conducted, so that the color light emitting module in the color light emitting circuit is conducted.
Description
Technical Field
The embodiment of the invention relates to the field of lamp control, in particular to a device and a method for synchronously controlling LED lamps.
Background
With the gradual expansion of the LED (Light Emitting Diode) general lighting and landscape application market, the demand of consumers for LED lamps for lighting and landscape is increasing.
In the traditional LED colored lamp, a color light emitting circuit and a white light emitting circuit in the traditional LED colored lamp are independent, and a control circuit of the color light emitting circuit and a control circuit of the white light emitting circuit are also operated separately.
When the synchronous control of the color light and the white light is needed, if the synchronous start is controlled, and the synchronous change is carried out, if the start time of the two power supplies is inconsistent, the condition that the LED lamp cannot be synchronously controlled can occur, the visual effect is influenced, and the user experience is not good.
Disclosure of Invention
The embodiment of the invention provides a synchronous control device and method for LED lamps, which are used for solving the technical problems that white light luminescence and color light luminescence of LEDs cannot be synchronously started and simultaneously change, so that the visual effect of a user is influenced and the user experience is poor.
In a first aspect, an embodiment of the present invention provides an LED lamp synchronization control apparatus, including:
the white light emitting circuit, the synchronous control module and the color light emitting circuit; the white light emitting circuit includes: the white light emitting module and the white light driving module; the color light emitting circuit comprises a color light emitting module, a controllable switch and a color light driving module;
the white light emitting circuit is electrically connected with the synchronous control module, and the output end of the synchronous control module is electrically connected with the control end of the controllable switch;
the white light emitting circuit is used for generating a driving signal for driving the white light emitting module to emit light;
the synchronous control module is used for receiving the driving signal and processing the driving signal so as to output a low level signal when the white light driving module controls the white light emitting module to be not conducted; when the white light driving module controls the white light emitting module to be conducted, a high level signal is output;
the controllable switch is used for being in a cut-off state if the low level signal is received, so that a color light emitting module in the color light emitting circuit is not conducted; and if the high level signal is received, the LED is in a conducting state, so that a color light emitting module in the color light emitting circuit is conducted.
Further, the LED lamp synchronous control device as described above, the synchronous control module includes: the output end of the comparison unit is electrically connected with the control end of the controllable switch;
if the first level signal output by the first comparison circuit is greater than the second level signal output by the second comparison circuit, the comparison unit outputs a high level signal;
and if the first level signal output by the first comparison circuit is smaller than the second level signal output by the second comparison circuit, the comparison unit outputs a low level signal.
Further, in the above synchronous control device for LED lamps, an input terminal of the first comparison circuit is electrically connected to an anode of an output terminal of the white light driving module, an input terminal of the second comparison circuit is electrically connected to a cathode of the output terminal of the white light driving module, the comparison unit is a voltage comparator, and the first comparison circuit includes a first resistor and a second resistor connected in series in sequence; the second comparison circuit comprises a third resistor and a fourth resistor which are sequentially connected in series;
the output end of the second resistor is grounded, and the output end of the fourth resistor is grounded;
the output end of the first resistor is electrically connected with the non-inverting input end of the voltage comparator, and the output end of the third resistor is electrically connected with the inverting input end of the voltage comparator;
the resistance value of the first resistor is equal to that of the third resistor, and the resistance value of the second resistor is smaller than that of the fourth resistor.
Further, in the above synchronous control device for LED lamps, an input end of the first comparison circuit is electrically connected to a negative electrode of an output end of the white light driving module, an input end of the second comparison circuit is electrically connected to a negative electrode of an output end of the white light driving module, the comparison unit is an operational amplifier, and the first comparison circuit includes a fifth resistor and a sixth resistor connected in series in sequence; the second comparison circuit comprises a seventh resistor and an eighth resistor which are sequentially connected in series; the synchronization control module further comprises: the ninth resistor is electrically connected with the cathode of the output end of the white light driving module;
the output end of the sixth resistor is grounded, and the output end of the eighth resistor is grounded;
the output end of the fifth resistor is electrically connected with the non-inverting input end of the operational amplifier, and the output end of the seventh resistor is electrically connected with the inverting input end of the operational amplifier;
the resistance value of the fifth resistor is equal to that of the seventh resistor, and the resistance value of the sixth resistor is equal to that of the eighth resistor.
Further, the LED lamp synchronous control device as described above further includes: and the input end of the negative feedback circuit is electrically connected with the inverting input end of the operational amplifier, and the output end of the negative feedback circuit is electrically connected with the output end of the operational amplifier.
Further, the LED lamp synchronous control device as described above, the white light driving module includes: an electrolytic capacitor and a tenth resistor connected in parallel therewith.
Further, in the LED lamp synchronous control device, a difference between a resistance value of the tenth resistor and a sum of resistance values of the third resistor and the fourth resistor is greater than a preset resistance threshold.
Further, in the synchronous control device for LED lamps as described above, the controllable switch is a transistor.
Further, the LED lamp synchronous control device as described above further includes: an MCU micro-processing module;
the input end of the MCU micro-processing module is electrically connected with the output end of the synchronous control module, and the output end of the MCU micro-processing module is electrically connected with the control end of the controllable switch;
the MCU micro-processing module is used for generating a control signal according to a preset lighting time difference value and outputting the control signal so as to control the difference value between the lighting time of the color light emitting circuit and the lighting time of the white light emitting circuit to be a preset time difference value.
In a second aspect, an embodiment of the present invention provides a method for synchronously controlling LED lamps, including:
the white light emitting circuit generates a driving signal for driving the white light emitting module to emit light;
the synchronous control module receives the driving signal and processes the driving signal so as to output a low level signal when the white light driving module controls the white light emitting module to be not conducted; when the white light driving module controls the white light emitting module to be conducted, a high level signal is output;
if the controllable switch receives the low level signal, the controllable switch is in a cut-off state, so that a color light emitting module in the color light emitting circuit is not conducted; if the high level signal is received, the circuit is in a conducting state, so that the color light emitting module in the color light emitting circuit is conducted.
Further, according to the LED lamp synchronization control method, the synchronization control module includes: the output end of the comparison unit is electrically connected with the control end of the controllable switch;
the synchronous control module receives the driving signal and processes the driving signal so as to output a low level signal when the white light driving module controls the white light emitting module to be not conducted; when the white light driving module controls the white light emitting module to be conducted, a high level signal is output, including:
the first comparison circuit and the second comparison circuit receive the driving signal and process the driving signal, so that the first comparison circuit outputs a first level signal, the second comparison circuit outputs a second level signal, and the comparison unit compares the first level signal with the second level signal;
if the first level signal output by the first comparison circuit is greater than the second level signal output by the second comparison circuit, the comparison unit outputs a high level signal;
and if the first level signal output by the first comparison circuit is smaller than the second level signal output by the second comparison circuit, the comparison unit outputs a low level signal.
According to the LED lamp synchronous control device and method provided by the embodiment of the invention, the driving signal of the white light driving module is processed through the synchronous control module, and the on-off state of the controllable switch is controlled according to the processing result, so that when the white light driving module controls the white light emitting module to be not on, the controllable switch is in the off state, and the colored light emitting module in the colored light emitting circuit is further controlled to be not on; when the white light driving module controls the white light emitting module to be conducted, the controllable switch is in a conducting state, and further controls the color light emitting module in the color light emitting circuit to be conducted, so that synchronous starting and simultaneous change of the white light emitting circuit and the color light emitting circuit are realized, the visual effect is improved, and the user experience is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of an LED lamp synchronous control device according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of an LED lamp synchronous control device according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of an LED lamp synchronous control device according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of an LED lamp synchronous control device according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of an LED lamp synchronous control device according to a fifth embodiment of the present invention;
fig. 6 is a schematic flowchart of a method for synchronously controlling LED lamps according to a sixth embodiment of the present invention;
fig. 7 is a schematic flow chart of a method for synchronously controlling LED lamps according to a seventh embodiment of the present invention.
Description of reference numerals:
11: a mains supply module; 12: a rectification module; 13: synchronization control module, 14: a controllable switch; 15: a color light emitting circuit; 15 a: color light driving module, 15 b: a color light emitting module; 16: a white light emitting circuit; 16 a: a white light driving module; 16 b: a white light emitting module; 17: an MCU micro-processing module; 103: a voltage comparator; 203: an operational amplifier; 100: an electrolytic capacitor; 141: a transistor.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of an LED lamp synchronous control device according to a first embodiment of the present invention, and as shown in fig. 1, the LED lamp synchronous control device includes: a white light emitting circuit 16, a synchronous control module 13 and a color light emitting circuit 15; the white light emitting circuit 16 includes: a white light emitting module 16b, a white light driving module 16 a; the color light emitting circuit 15 includes: a color light emitting module 15b, a controllable switch 14 and a color light driving module 15 a. It should be noted that the controllable switch 14 may be integrated in the color light emitting circuit 15, or may be independent from the color light emitting circuit 15, and is not limited herein.
The synchronous control module 13 is electrically connected to the white light emitting circuit 16, specifically, the output end of the white light driving module 16a is electrically connected to the input end of the synchronous control module 13 and the white light emitting module 16b, the output end of the synchronous control module 13 is electrically connected to the control end of the controllable switch 14, and the output end of the controllable switch 14 is electrically connected to the color light emitting module 15 b. It should be noted that the connection relationship is not exclusive.
As an optional connection mode, the white light emitting module 16b is electrically connected to the synchronous control module 13 and the white light driving module 16a, respectively, an output end of the synchronous control module 13 is electrically connected to a control end of the controllable switch 14, and an output end of the controllable switch 14 is electrically connected to the color light emitting module 15 b.
As another alternative connection mode, the white light driving module 16a and the synchronous control module 13 may be integrated on the same integrated module, the integrated module is electrically connected to the control terminal of the controllable switch 14, and the output terminal of the controllable switch 14 is electrically connected to the color light emitting module 15 b.
Specifically, the LED lamp synchronous control device in this embodiment may further include: a mains module 11 and a rectifier module 12. The input end of the rectifying module 12 is electrically connected to the commercial power module 11, the output end of the rectifying module 12 is electrically connected to the input end of the white light driving module 16a of the white light emitting circuit 16 and the input end of the color light driving module 15a of the color light emitting circuit 15, the output end of the white light driving module 16a is electrically connected to the input end of the synchronous control module 13 and the white light emitting module 16b of the white light emitting circuit 16, the output end of the synchronous control module 13 is electrically connected to the control end of the controllable switch 14, and the output end of the controllable switch 14 is electrically connected to the color light emitting module 15 b.
In the present embodiment, the white light emitting circuit 16 is configured to generate a driving signal for driving the white light emitting module 16b to emit light; the synchronous control module 13 is configured to receive the driving signal and process the driving signal to output a low level signal when the white light driving module 16a controls the white light emitting module 16b to be turned off; when the white light driving module 16a controls the white light emitting module 16b to be conducted, a high level signal is output; the controllable switch 14 is configured to be in a cut-off state if receiving a low level signal, so that the color light emitting module 15b in the color light emitting circuit 15 is not turned on; if a high level signal is received, the circuit is in a conducting state, so that the color light emitting module 15b in the color light emitting circuit is conducted.
Specifically, the rectifying module 12 rectifies the ac power output by the utility power module 11 to output a dc power signal suitable for the operation of the white light driving module 16a and the color light driving module 15 a; the white light driving module 16a generates a driving signal for driving the white light emitting module 16b to emit light according to the direct current signal output by the rectifying module 12;
before the white light driving module 16a does not turn on the white light emitting module 16b to emit light, the synchronous control module 13 processes a driving signal of the white light driving module 16a, the driving signal may be a voltage signal or a current signal, the synchronous control module 13 processes the driving signal and then outputs a low level signal to the control end of the controllable switch 14, because the control end of the controllable switch 14 inputs the low level signal, the controllable switch 14 is in an off state, and then the color light emitting module 15b connected to the output end of the controllable switch 14 cannot be turned on and is in an off state; therefore, when the white light emitting module is not conducted to emit light, the color light emitting module is also in a non-conducted light emitting state.
When the white light driving module 16a makes the white light emitting module 16b conduct to emit light, the synchronous control module 13 processes a driving signal of the white light driving module 16a, the driving signal may be a voltage signal or a current signal, the synchronous control module 13 processes the driving signal and outputs a high level signal to the control end of the controllable switch 14, and since the control end of the controllable switch 14 inputs the high level signal, the controllable switch 14 is in a conducting state, and then the color light emitting module 15b connected to the output end of the controllable switch 14 is conducted and is in a conducting light emitting state. Therefore, when the white light emitting module is in a conducting light emitting state, the color light emitting module is also in a conducting light emitting state.
As an optional manner, the function of the controllable switch 14 in this embodiment may also be implemented by a chip in the color light emitting circuit 15, that is, the chip controls the color light emitting module 15b to be turned on or off.
The LED lamp synchronous control device that this embodiment provided includes: the white light emitting circuit, the synchronous control module and the color light emitting circuit; the white light emitting circuit includes: the white light emitting module and the white light driving module; the color light emitting circuit comprises a color light emitting module, a controllable switch and a color light driving module; the output end of the white light driving module is respectively electrically connected with the input end of the synchronous control module and the white light emitting module, and the output end of the synchronous control module is electrically connected with the control end of the controllable switch. In the embodiment, the driving signal of the white light driving module is processed by the synchronous control module, and the controllable switch is controlled to be turned on or off according to the processing result, so that when the white light driving module controls the white light emitting module to be turned off, the controllable switch is in a turned-off state, and the color light emitting module in the color light emitting circuit is further controlled to be turned off; when the white light driving module controls the white light emitting module to be conducted, the controllable switch is in a conducting state, and further controls the color light emitting module in the color light emitting circuit to be conducted, so that synchronous starting and simultaneous change of the white light emitting circuit and the color light emitting circuit are realized, the visual effect is improved, and the user experience is improved.
Fig. 2 is a schematic structural diagram of an LED lamp synchronous control device according to a second embodiment of the present invention, and as shown in fig. 2, the LED lamp synchronous control device according to the present embodiment is obtained by thinning some modules in the LED lamp synchronous control device based on the first embodiment.
Optionally, the controllable switch is a transistor 141.
Specifically, the output signal of the synchronization control module 13 controls the transistor 141 to be turned on or off. When the synchronous control module 13 outputs a low level signal to the base of the transistor 141, the voltage between the base and the emitter of the transistor 141 is less than the turn-on voltage of the transistor 141, and therefore, the transistor 141 is in a turn-off state, so that the color light emitting module 15b is not turned on. When the synchronous control module 13 outputs a high level signal to the base of the transistor 141, the voltage between the base and the emitter of the transistor 141 is greater than the turn-on voltage of the transistor 141, and therefore, the transistor 141 is in a conducting state, so that the color light emitting module 15b is turned on.
Optionally, in this example, the synchronization control module 13 includes: the output end of the comparison unit is electrically connected with the control end of the controllable switch;
if the first level signal output by the first comparing circuit 101 is greater than the second level signal output by the second comparing circuit 102, the comparing unit outputs a high level signal;
if the first level signal output by the first comparing circuit 101 is smaller than the second level signal output by the second comparing circuit 102, the comparing unit outputs a low level signal.
Specifically, the first comparison circuit 101 at the non-inverting input end and the second comparison circuit 102 at the inverting input end of the comparison unit respectively process the driving signals of the white light driving module 16a, and when a first level (i.e., a voltage at a point B) output by the first comparison circuit 101 is greater than a second level signal (i.e., a voltage at a point a) output by the second comparison circuit 102, according to the working principle of the comparison unit, the voltage at the non-inverting input end is greater than the voltage at the inverting input end, the comparison unit outputs a high level signal; when the first level (i.e. the voltage at the point B) output by the first comparing circuit 101 is less than the second level signal (i.e. the voltage at the point a) output by the second comparing circuit 102, the voltage at the non-inverting input terminal is less than the voltage at the inverting input terminal according to the operating principle of the comparing unit, and the comparing unit outputs a low level signal.
Optionally, as shown in fig. 2, in the present embodiment, the comparing unit of the synchronous control module 13 is a voltage comparator 103, and the first comparing circuit 101 includes a first resistor R1 and a second resistor R2 connected in series in sequence; the second comparison circuit 102 comprises a third resistor R3 and a fourth resistor R4 which are sequentially connected in series;
the output end of the second resistor R2 is grounded, and the output end of the fourth resistor R4 is grounded;
the output end of the first resistor R1 is electrically connected with the non-inverting input end of the voltage comparator 103, and the output end of the third resistor R3 is electrically connected with the inverting input end of the voltage comparator 103;
the resistance of the first resistor R1 is equal to the resistance of the third resistor R3, and the resistance of the second resistor R2 is smaller than the resistance of the fourth resistor R4.
Specifically, the first comparison circuit 101 includes a first resistor R1 and a second resistor R2, an input end of the first resistor R1 is electrically connected to the positive electrode of the output end of the white light driving module, an output end (denoted as point B) of the first resistor R1 is electrically connected to an input end of the second resistor R2 and the non-inverting input end of the voltage comparator 103, respectively, and an output end of the second resistor R2 is grounded; the second comparison circuit 102 includes a third resistor R3 and a fourth resistor R4, an input terminal of the third resistor R3 is electrically connected to the negative terminal of the output terminal of the white light driving module, an output terminal (denoted as point a) of the third resistor R3 is electrically connected to an input terminal of the fourth resistor R4 and the inverting input terminal of the voltage comparator 103, respectively, and an output terminal of the fourth resistor R4 is grounded.
The resistance of the first resistor R1 is equal to the resistance of the third resistor R3, and the resistance of the second resistor R2 is smaller than the resistance of the fourth resistor R4.
Optionally, as shown in fig. 2, the first comparing circuit 101 further includes a first capacitor C1, the first capacitor C1 is connected in parallel with the second resistor R2, and both form a filtering circuit for filtering the electrical signal at the non-inverting input terminal of the voltage comparator 103 to remove the interference signal; the second comparing circuit 102 further includes a second capacitor C2, the second capacitor C2 is connected in parallel with the fourth resistor R4, and both form a filter circuit for filtering the electrical signal at the inverting input terminal of the voltage comparator 103 to remove the interference signal.
Optionally, in this embodiment, the white light driving module 16a includes: an electrolytic capacitor 100 and a tenth resistor R10 connected in parallel therewith.
Specifically, the positive electrode of the electrolytic capacitor 100 is electrically connected to the output end of the rectifier module 12 and the input end (denoted as point D) of the white light emitting module 16b, the negative electrode of the electrolytic capacitor 100 is electrically connected to the output end (denoted as point C) of the white light emitting module 16b, and the electrolytic capacitor 100 is connected in parallel to the tenth resistor R10.
Before the white light driving module 16a is just started and the white light emitting module 16b is not turned on to emit light, the synchronous control module 13 processes the driving signal of the white light driving module 16a, and the processing procedure is described in detail by taking the driving signal as a voltage signal as an example:
because the white light emitting module 16b is not conducted to emit light, when the synchronous control device of the LED lamp is just started, the commercial power module 11 provides alternating current to the rectifying module 12, the rectifying module 12 converts the alternating current into direct current, the direct current charges the electrolytic capacitor 100, the voltage of the electrolytic capacitor 100 slowly rises from 0v until the electrolytic capacitor is saturated, at this time, the rectified direct current voltage supplies power to the white light emitting module 16b, and when the rated working voltage of the white light emitting module 16b is reached, the white light emitting module 16b is conducted to emit light.
Further, in this embodiment, the difference between the resistance value of the tenth resistor R10 and the sum of the resistance values of the third resistor R3 and the fourth resistor R4 is greater than the preset resistance threshold. The preset resistance threshold can be such that when the difference between the resistance of the tenth resistor R10 and the sum of the resistances of the third resistor R3 and the fourth resistor R4 is greater than the threshold, the voltage drop across the tenth resistor is negligibly small.
Specifically, the tenth resistor R10 is electrically connected to the positive electrode and the negative electrode of the electrolytic capacitor 100, respectively, and since the difference between the resistance value of the tenth resistor R10 and the sum of the resistance values of the third resistor R3 and the fourth resistor R4 is greater than the preset resistance threshold, the voltage drop across the tenth resistor R10 is small before the white light emitting module 16b is not turned on during the charging process of the electrolytic capacitor 100, so that Vc equals Vd, where Vc is the voltage at the point C and Vd equals the voltage at the point D. According to the principle of circuit voltage division, the resistance value of the first resistor R1 is equal to the resistance value of the third resistor R3, and the resistance value of the second resistor R2 is smaller than the resistance value of the fourth resistor R4, where Va is a voltage at a point a and Vb is a voltage at B point. According to the operating principle of the voltage comparator 103, when the voltage value Va at the inverting input terminal is greater than the voltage value Vb at the non-inverting input terminal, the voltage comparator 103 outputs a low level signal to the base of the transistor 141, and the voltage between the base and the emitter of the transistor 141 is less than the turn-on voltage of the transistor due to the input of the low level signal to the base of the transistor 141, so that the transistor 141 is in the off state, and the color light emitting module 15b connected to the collector of the transistor 141 cannot be turned on, thereby achieving the effect that the color light emitting module is also in the off light emitting state when the white light emitting module is not turned on to emit light.
When the white light driving module 16a is started for a period of time, and the white light emitting module 16b is turned on to emit light, the synchronous control module 13 processes the driving signal of the white light driving module 16a, taking the driving signal as a voltage signal as an example, to describe the processing procedure in detail:
since the white light emitting module 16b is turned on to emit light, Vc < Vd, where Vc is the voltage at point C and Vd is the voltage at point D. According to the principle of circuit voltage division, the resistance value of the first resistor R1 is equal to the resistance value of the third resistor R3, and the resistance value of the second resistor R2 is smaller than the resistance value of the fourth resistor R4, where Va is a voltage at a point a and Vb is a voltage at a point B. According to the operating principle of the voltage comparator 103, when the voltage value Va at the inverting input terminal is smaller than the voltage value Vb at the non-inverting input terminal, the voltage comparator 103 outputs a high level signal to the base of the transistor 141, and the voltage between the base and the emitter of the transistor 141 is greater than the turn-on voltage of the transistor due to the input of the high level signal at the base of the transistor 141, so that the transistor 141 is in a conducting state, and the color light emitting module 15b connected to the collector of the transistor 141 is further conducted, thereby achieving the effect that the color light emitting module is also in a conducting light emitting state when the white light emitting module is conducted to emit light.
Specifically, in the present embodiment, the transistor is an NPN transistor.
Specifically, the emitter of the transistor 141 is grounded, the base of the transistor 141 is electrically connected to the output terminal of the voltage comparator 103, and the collector is electrically connected to the color light emitting module 15 b. The transistor 141 may be a mature commercial product, and is not particularly limited herein. In practice, PNP transistors can be used as the transistors, but the corresponding circuit design needs to be adjusted.
In the LED lamp synchronous control device provided in this embodiment, before the white light emitting module is charged by the electrolytic capacitor and is not turned on, the white light driving signal is processed by the first comparison circuit and the second comparison circuit of the synchronous control device, and according to the relationship of resistance values of the resistors and the circuit voltage division principle, the voltage comparator outputs a low level, so that the transistor is in an off state, and the color light emitting module is not turned on; after the electrolytic capacitor is charged for a period of time to reach a saturated state, when the rectified direct current voltage enables the white light emitting module to be conducted to emit light, the white light driving signal is processed through a first comparison circuit and a second comparison circuit of the synchronous control device, and according to the relation of resistance values of the resistors and the circuit voltage division principle, the voltage comparator outputs a high level, so that the transistor is in a conducting state, and the color light emitting module is also conducted to emit light. Therefore, the effect that the white light emitting module and the color light emitting module are started and changed simultaneously is achieved.
Fig. 3 is a schematic structural diagram of an LED lamp synchronization control device provided in a third embodiment of the present invention, and as shown in fig. 3, on the basis of the second embodiment, the LED lamp synchronization control device provided in this embodiment further includes: MCU (central processing unit) microprocessing module.
Optionally, an input end of the MCU micro-processing module 17 is electrically connected to an output end of the synchronous control module 13, and the output end 17 of the MCU micro-processing module is electrically connected to a control end of the controllable switch.
Specifically, in this embodiment, the input end of the MCU micro-processing module 17 is electrically connected to the output end of the synchronous control module 13, and the output end of the MCU micro-processing module 17 is electrically connected to the base of the transistor 141.
Optionally, the MCU micro-processing module 17 is configured to generate a control signal according to a preset lighting time difference, and output the control signal to control a difference between the lighting time of the color light emitting circuit and the lighting time of the white light emitting circuit to be the preset time difference.
Specifically, in this embodiment, the MCU micro-processing module 17 includes at least one central processing unit, and the MCU micro-processing module 17 may select a mature commercial product, which is not limited herein. By setting the parameter of the MCU micro-processing module 17, for example, setting the parameter of the MCU micro-processing module 17 according to the difference between the time when the color light emitting circuit 15 is turned on and the time when the white light emitting circuit 16 is turned on, the MCU micro-processing module 17 can output a control signal at the time when the difference between the above times reaches, and the transistor 141 controls the color light emitting module 15b to be turned on or off according to the control signal. When the control signal is a high level signal, the transistor 141 controls the color light emitting module 15b to be turned on; when the control signal is a low level signal, the transistor 141 controls the color light emitting module 15b to be turned off.
The synchronous control device for the LED lamp provided in this embodiment can control the change of the color light emitting circuit relative to the white light emitting circuit according to the preset time value by the added MCU micro-processing module, that is, the color light emitting circuit is turned on or off with a delay of the preset time value relative to the white light emitting circuit.
Fig. 4 is a schematic structural diagram of an LED lamp synchronous control device according to a fourth embodiment of the present invention, and as shown in fig. 4, the LED lamp synchronous control device according to the present embodiment is different from the LED lamp synchronous control device according to fig. 2 in that a difference of synchronous control modules is different, and other portions are the same, and details regarding the same portions are not repeated herein.
Optionally, in this embodiment, the comparison unit of the synchronous control module 13 is an operational amplifier 203, and the first comparison circuit 201 includes a fifth resistor R5 and a sixth resistor R6 connected in series in sequence; the second comparison circuit 202 comprises a seventh resistor R7 and an eighth resistor R8 which are sequentially connected in series; the synchronization control module further includes: the ninth resistor R9, the ninth resistor R9 is electrically connected with the negative electrode of the output end of the white light driving module 16 a;
the output end of the sixth resistor R6 is grounded, and the output end of the eighth resistor R8 is grounded;
the output end of the fifth resistor R5 is electrically connected with the non-inverting input end of the operational amplifier 203, and the output end of the seventh resistor R7 is electrically connected with the inverting input end of the operational amplifier 203;
the resistance of the fifth resistor R5 is equal to the resistance of the seventh resistor R7, and the resistance of the sixth resistor R6 is equal to the resistance of the eighth resistor R8.
Specifically, the first comparison circuit 201 includes a fifth resistor R5 and a sixth resistor R6, an output terminal (denoted as point B) of the fifth resistor R5 is electrically connected to the non-inverting input terminal of the operational amplifier 203 and the input terminal of the sixth resistor R6, respectively, and an output terminal of the sixth resistor R6 is grounded; the second comparison circuit 202 comprises a seventh resistor R7 and an eighth resistor R8, wherein the output end (marked as point a) of the seventh resistor R7 is electrically connected with the inverting input end of the operational amplifier 203 and the input end of the eighth resistor R8 respectively, and the output end of the eighth resistor R8 is grounded; the ninth resistor R9 is electrically connected to the negative terminal of the output terminal of the white light driving module 16a, and the right end of R9 is denoted as point D, and the left end of R9 is denoted as point C.
The resistance of the fifth resistor R5 is equal to the resistance of the seventh resistor R7, and the resistance of the sixth resistor R6 is equal to the resistance of the eighth resistor R8.
Before the white light driving module 16a is just started and the white light emitting module 16b is not turned on to emit light, the synchronous control module 13 processes the driving signal of the white light driving module 16a, and the processing procedure is described in detail by taking the driving signal as a current signal as an example:
on the premise that the white light emitting module 16b is not turned on to emit light, the LED resistance of the white light emitting module 16b is much larger than the tenth resistor R10, so that the current flowing through the white light emitting module is 0 ampere, and at this time, the current on the white light driving module 16b flows from the point C to the point D, since the resistance of the fifth resistor R5 is equal to the resistance of the seventh resistor R7, the resistance of the sixth resistor R6 is equal to the resistance of the eighth resistor R8, and a voltage drop exists across the ninth resistor R9, Vc is greater than Vd, where Vc is the voltage at the point C and Vd is the voltage at the point D. Since the output terminals of the sixth resistor R6 and the eighth resistor R8 are grounded, Va > Vb, where Va is a voltage at a point a and Vb is a voltage at B point, according to the principle of circuit voltage division. According to the operating principle of the operational amplifier 203, when the voltage value Va at the inverting input terminal is greater than the voltage value Vb at the non-inverting input terminal, the operational amplifier 203 outputs a low level signal to the base of the transistor 141, and the voltage between the base and the emitter of the transistor 141 is less than the turn-on voltage of the transistor due to the input of the low level signal, so that the transistor 141 is in the off state, and the color light emitting module 15b connected to the collector of the transistor 141 cannot be turned on, thereby achieving the effect that the color light emitting module is also in the off light emitting state when the white light emitting module is not turned on to emit light.
When the electrolytic capacitor 100 is charged to a saturation state and the rectified dc voltage supplies power to the white light emitting module 16b to make the white light emitting module 16b conduct and emit light, the synchronous control module 13 processes the driving signal of the white light driving module 16a, and the processing procedure is described in detail by taking the driving signal as a current signal as an example:
because the white light emitting module 16b is turned on to emit light, the resistance of the LED lamp in the turned-on white light emitting module is much smaller than the tenth resistor R10, so that the current flows from the point D to the point C after flowing through the white light emitting module, and because the resistance of the fifth resistor R5 is equal to the resistance of the seventh resistor R7, the resistance of the sixth resistor R6 is equal to the resistance of the eighth resistor R8, and a voltage drop exists across the ninth resistor R9, Vc is less than Vd, where Vc is the voltage at the point C and Vd is the voltage at the point D. Since the output terminals of the sixth resistor R6 and the eighth resistor R8 are grounded, Va < Vb can be known from the principle of circuit voltage division, where Va is the voltage at point a and Vb is the voltage at point B. According to the working principle of the operational amplifier 203, when the voltage value Va at the inverting input terminal is smaller than the voltage value Vb at the non-inverting input terminal, the operational amplifier 203 outputs a high level signal to the base of the transistor 141, and the voltage between the base and the emitter of the transistor 141 is greater than the turn-on voltage of the transistor due to the input of the high level signal, so that the transistor 141 is in a conducting state, and the color light emitting module 15b connected to the collector of the transistor 141 is further conducted, thereby realizing the effect that the color light emitting module is also in a conducting light emitting state when the white light emitting module is conducted to emit light.
Optionally, in this embodiment, the synchronization control module further includes: and a negative feedback circuit 204, wherein an input end of the negative feedback circuit 204 is electrically connected with an inverting input end of the operational amplifier 203, and an output end of the negative feedback circuit 204 is electrically connected with an output end of the operational amplifier 203.
Specifically, the negative feedback circuit 204 includes an eleventh resistor R11 and a third capacitor C3.
The eleventh resistor R11 is connected in parallel with the third capacitor C3, and is electrically connected to the inverting input terminal and the output terminal of the operational amplifier 203, respectively.
The negative feedback circuit 204 is used to adjust the output level of the operational amplifier 203 by negative feedback so that the output level better satisfies the operating level of the transistor 141.
In the LED lamp synchronous control device provided in this embodiment, before the white light emitting module is charged by the electrolytic capacitor and is not turned on, the white light driving signal is processed by the first comparing circuit and the second comparing circuit of the synchronous control device, and according to the relationship of resistance values of the resistors and the circuit voltage division principle, the operational amplifier outputs a low level, so that the transistor is in an off state, and the color light emitting module is not turned on; after the electrolytic capacitor is charged for a period of time to reach a saturation state, when the rectified direct current voltage enables the white light emitting module to be conducted to emit light, the white light driving signal is processed through a first comparison circuit and a second comparison circuit of the synchronous control device, and according to the relation of resistance values of the resistors and the circuit voltage division principle, the operational amplifier outputs a high level, so that the transistor is in a conduction state, and the color light emitting module is also conducted to emit light. Therefore, the effect that the white light emitting module and the color light emitting module are started and changed simultaneously is achieved.
Fig. 5 is a schematic structural diagram of an LED lamp synchronous control device provided in the fifth embodiment of the present invention, and as shown in fig. 5, on the basis of the fourth embodiment, the LED lamp synchronous control device provided in this embodiment further includes: MCU (central processing unit) microprocessing module.
Optionally, an input end of the MCU micro-processing module 17 is electrically connected to an output end of the synchronous control module 13, and the output end 17 of the MCU micro-processing module is electrically connected to a control end of the controllable switch.
Specifically, in this embodiment, the input end of the MCU micro-processing module 17 is electrically connected to the output end of the synchronous control module 13, and the output end of the MCU micro-processing module 17 is electrically connected to the base of the transistor 141.
Optionally, the MCU micro-processing module 17 is configured to generate a control signal according to a preset lighting time difference, and output the control signal to control a difference between the lighting time of the color light emitting circuit and the lighting time of the white light emitting circuit to be the preset time difference.
Specifically, in this embodiment, the MCU micro-processing module 17 includes at least one central processing unit, and the MCU micro-processing module 17 may select a mature commercial product, which is not limited herein. By setting the parameter of the MCU micro-processing module 17, for example, setting the parameter of the MCU micro-processing module 17 according to the difference between the time when the color light emitting circuit 15 is turned on and the time when the white light emitting circuit 16 is turned on, the MCU micro-processing module 17 can output a control signal at the time when the difference between the above times reaches, and the transistor 141 controls the color light emitting module 15b to be turned on or off according to the control signal. When the control signal is a high level signal, the transistor 141 controls the color light emitting module 15b to be turned on; when the control signal is a low level signal, the transistor 141 controls the color light emitting module 15b to be turned off.
The synchronous control device for the LED lamp provided in this embodiment can control the change of the color light emitting circuit relative to the white light emitting circuit according to the preset time value by the added MCU micro-processing module, that is, the color light emitting circuit is turned on or off with a delay of the preset time value relative to the white light emitting circuit.
Fig. 6 is a schematic flow chart of a method for synchronously controlling LED lamps according to a sixth embodiment of the present invention, and as shown in fig. 6, the method for synchronously controlling LED lamps includes:
102, receiving a driving signal by a synchronous control module, and processing the driving signal so as to output a low level signal when a white light driving module controls a white light emitting module to be not conducted; when the white light driving module controls the white light emitting module to be conducted, a high level signal is output.
103, if the controllable switch receives a low level signal, the controllable switch is in a cut-off state, so that the color light emitting module in the color light emitting circuit is not turned on; if a high level signal is received, the circuit is in a conducting state, so that the color light emitting module in the color light emitting circuit is conducted.
Specifically, before the white light driving module in the white light emitting circuit generates a driving signal for driving the white light emitting module to emit light, the method further includes:
the rectification module receives the alternating current signal output by the commercial power module, rectifies the alternating current signal and converts the alternating current signal into a direct current signal.
The LED lamp synchronous control method provided in this embodiment corresponds to the LED lamp synchronous control device shown in fig. 1, and the implementation principle and technical effect thereof are similar, and are not described herein again.
Fig. 7 is a schematic flow chart of a method for synchronously controlling LED lamps according to a seventh embodiment of the present invention, which is further detailed in this embodiment on the basis of a sixth embodiment of the method for synchronously controlling LED lamps, and as shown in fig. 7, the method for synchronously controlling LED lamps includes:
And step 203, the first comparison circuit and the second comparison circuit receive the driving signal and process the driving signal, and the comparison unit outputs a low-level signal to the base of the transistor.
Optionally, step 203 comprises the steps of:
step 2031, the first comparing circuit and the second comparing circuit receive the driving signal and process the driving signal, so that the first comparing circuit outputs a first level signal, the second comparing circuit outputs a second level signal, and the comparing unit compares the first level signal and the second level signal.
In step 2032, if the first level signal output by the first comparing circuit is less than the second level signal output by the second comparing circuit, the comparing unit outputs a low level signal.
In step 204, the transistor is turned off and the color light emitting module is not turned on.
Step 205, the electrolytic capacitor in the white light driving module is charged to turn on the white light emitting module, the first comparing circuit and the second comparing circuit receive the driving signal and process the driving signal, and the comparing unit outputs a high level signal to the base of the transistor.
Optionally, the first comparing circuit and the second comparing circuit receive the driving signal and process the driving signal, so that the first comparing circuit outputs a first level signal, the second comparing circuit outputs a second level signal, and the comparing unit compares the first level signal and the second level signal; if the first level signal output by the first comparison circuit is greater than the second level signal output by the second comparison circuit, the comparison unit outputs a high level signal.
In step 206, the transistor is turned on, and the color light emitting module is turned on.
The LED lamp synchronous control method provided in this embodiment corresponds to the LED lamp synchronous control device shown in fig. 2 and/or fig. 4, and the implementation principle and technical effect thereof are similar, and are not described herein again.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of modules is merely a division of logical functions, and an actual implementation may have another division, for example, a plurality of modules or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (11)
1. The utility model provides a LED lamp synchronous control device which characterized in that includes: the white light emitting circuit, the synchronous control module and the color light emitting circuit; the white light emitting circuit includes: the white light emitting module and the white light driving module; the color light emitting circuit comprises a color light emitting module, a controllable switch and a color light driving module;
the white light emitting circuit is electrically connected with the synchronous control module, and the output end of the synchronous control module is electrically connected with the control end of the controllable switch;
the white light emitting circuit is used for generating a driving signal for driving the white light emitting module to emit light;
the synchronous control module is used for receiving the driving signal and processing the driving signal so as to output a low level signal when the white light driving module controls the white light emitting module to be not conducted; when the white light driving module controls the white light emitting module to be conducted, a high level signal is output;
the controllable switch is used for being in a cut-off state if the low level signal is received, so that a color light emitting module in the color light emitting circuit is not conducted; and if the high level signal is received, the LED is in a conducting state, so that a color light emitting module in the color light emitting circuit is conducted.
2. The apparatus of claim 1, wherein the synchronization control module comprises: the output end of the comparison unit is electrically connected with the control end of the controllable switch;
if the first level signal output by the first comparison circuit is greater than the second level signal output by the second comparison circuit, the comparison unit outputs a high level signal;
and if the first level signal output by the first comparison circuit is smaller than the second level signal output by the second comparison circuit, the comparison unit outputs a low level signal.
3. The apparatus of claim 2, wherein an input terminal of the first comparison circuit is electrically connected to an anode of the output terminal of the white light driving module, an input terminal of the second comparison circuit is electrically connected to a cathode of the output terminal of the white light driving module, the comparison unit is a voltage comparator, and the first comparison circuit comprises a first resistor and a second resistor connected in series in sequence; the second comparison circuit comprises a third resistor and a fourth resistor which are sequentially connected in series;
the output end of the second resistor is grounded, and the output end of the fourth resistor is grounded;
the output end of the first resistor is electrically connected with the non-inverting input end of the voltage comparator, and the output end of the third resistor is electrically connected with the inverting input end of the voltage comparator;
the resistance value of the first resistor is equal to that of the third resistor, and the resistance value of the second resistor is smaller than that of the fourth resistor.
4. The device according to claim 2, wherein the input terminal of the first comparison circuit is electrically connected to the negative terminal of the output terminal of the white light driving module, the input terminal of the second comparison circuit is electrically connected to the negative terminal of the output terminal of the white light driving module, the comparison unit is an operational amplifier, and the first comparison circuit comprises a fifth resistor and a sixth resistor which are sequentially connected in series; the second comparison circuit comprises a seventh resistor and an eighth resistor which are sequentially connected in series; the synchronization control module further comprises: the ninth resistor is electrically connected with the cathode of the output end of the white light driving module;
the output end of the sixth resistor is grounded, and the output end of the eighth resistor is grounded;
the output end of the fifth resistor is electrically connected with the non-inverting input end of the operational amplifier, and the output end of the seventh resistor is electrically connected with the inverting input end of the operational amplifier;
the resistance value of the fifth resistor is equal to that of the seventh resistor, and the resistance value of the sixth resistor is equal to that of the eighth resistor.
5. The apparatus of claim 4, further comprising: and the input end of the negative feedback circuit is electrically connected with the inverting input end of the operational amplifier, and the output end of the negative feedback circuit is electrically connected with the output end of the operational amplifier.
6. The apparatus of claim 3, wherein the white light driving module comprises: an electrolytic capacitor and a tenth resistor connected in parallel therewith.
7. The apparatus of claim 6, wherein a difference between a resistance value of the tenth resistor and a sum of resistance values of the third resistor and the fourth resistor is greater than a preset resistance threshold.
8. The apparatus of claim 1, wherein the controllable switch is a transistor.
9. The apparatus of claim 1, further comprising: an MCU micro-processing module;
the input end of the MCU micro-processing module is electrically connected with the output end of the synchronous control module, and the output end of the MCU micro-processing module is electrically connected with the control end of the controllable switch;
the MCU micro-processing module is used for generating a control signal according to a preset lighting time difference value and outputting the control signal so as to control the difference value between the lighting time of the color light emitting circuit and the lighting time of the white light emitting circuit to be a preset time difference value.
10. A synchronous control method for LED lamps is characterized by comprising the following steps:
the white light emitting circuit generates a driving signal for driving the white light emitting module to emit light;
the synchronous control module receives the driving signal and processes the driving signal so as to output a low level signal when the white light driving module controls the white light emitting module to be not conducted; when the white light driving module controls the white light emitting module to be conducted, a high level signal is output;
if the controllable switch receives the low level signal, the controllable switch is in a cut-off state, so that a color light emitting module in the color light emitting circuit is not conducted; if the high level signal is received, the circuit is in a conducting state, so that the color light emitting module in the color light emitting circuit is conducted.
11. The method of claim 10, wherein the synchronization control module comprises: the output end of the comparison unit is electrically connected with the control end of the controllable switch;
the synchronous control module receives the driving signal and processes the driving signal so as to output a low level signal when the white light driving module controls the white light emitting module to be not conducted; when the white light driving module controls the white light emitting module to be conducted, a high level signal is output, including:
the first comparison circuit and the second comparison circuit receive the driving signal and process the driving signal, so that the first comparison circuit outputs a first level signal, the second comparison circuit outputs a second level signal, and the comparison unit compares the first level signal with the second level signal;
if the first level signal output by the first comparison circuit is greater than the second level signal output by the second comparison circuit, the comparison unit outputs a high level signal;
and if the first level signal output by the first comparison circuit is smaller than the second level signal output by the second comparison circuit, the comparison unit outputs a low level signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911066385.0A CN110719667B (en) | 2019-11-04 | 2019-11-04 | LED lamp synchronous control device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911066385.0A CN110719667B (en) | 2019-11-04 | 2019-11-04 | LED lamp synchronous control device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110719667A true CN110719667A (en) | 2020-01-21 |
| CN110719667B CN110719667B (en) | 2021-06-22 |
Family
ID=69214699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911066385.0A Active CN110719667B (en) | 2019-11-04 | 2019-11-04 | LED lamp synchronous control device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110719667B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111953412A (en) * | 2020-08-07 | 2020-11-17 | 苏州浪潮智能科技有限公司 | Method and device for realizing optical information synchronization of optical module switch |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101790267A (en) * | 2010-01-18 | 2010-07-28 | 海洋王照明科技股份有限公司 | Bionic synchronous signal lamp and control circuit thereof |
| CN202018809U (en) * | 2011-04-29 | 2011-10-26 | 深圳市达特工程技术有限公司 | LED (light-emitting diode) synchronous display device |
| CN207969048U (en) * | 2018-04-04 | 2018-10-12 | 周社吉 | A kind of DC synchronous control system |
| CN208046979U (en) * | 2017-12-21 | 2018-11-02 | 深圳市莱福德光电有限公司 | A kind of synchronous light adjusting system |
-
2019
- 2019-11-04 CN CN201911066385.0A patent/CN110719667B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101790267A (en) * | 2010-01-18 | 2010-07-28 | 海洋王照明科技股份有限公司 | Bionic synchronous signal lamp and control circuit thereof |
| CN202018809U (en) * | 2011-04-29 | 2011-10-26 | 深圳市达特工程技术有限公司 | LED (light-emitting diode) synchronous display device |
| CN208046979U (en) * | 2017-12-21 | 2018-11-02 | 深圳市莱福德光电有限公司 | A kind of synchronous light adjusting system |
| CN207969048U (en) * | 2018-04-04 | 2018-10-12 | 周社吉 | A kind of DC synchronous control system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111953412A (en) * | 2020-08-07 | 2020-11-17 | 苏州浪潮智能科技有限公司 | Method and device for realizing optical information synchronization of optical module switch |
| CN111953412B (en) * | 2020-08-07 | 2022-03-08 | 苏州浪潮智能科技有限公司 | Method and device for realizing optical information synchronization of optical module switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110719667B (en) | 2021-06-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9119245B1 (en) | LED driving system for switched dimming control and dimming method using the same | |
| CN103379708B (en) | Lighting device capable of adjusting brightness and brightness adjusting method thereof | |
| CN104244511B (en) | LED driving device, LED lighting apparatus, and error amplification circuit | |
| CN101843176A (en) | Method and current control circuit for operating an electronic gas discharge lamp | |
| TWI477192B (en) | Dc dimming led driving circuit | |
| US20190008008A1 (en) | Light-Actuated Wide Voltage Range LED Lamp Driver Circuit | |
| CN110719667B (en) | LED lamp synchronous control device and method | |
| CN106058583B (en) | A kind of wireless socket | |
| CN106604454A (en) | Driving circuit and driving method of using switch to set LED luminance | |
| CN108200691A (en) | A kind of LED PAR lamps driving circuit and LED PAR lamps | |
| CN210491261U (en) | LED lamp and LED lamp strip adjust luminance mixing of colors temperature control circuit | |
| CN109379806B (en) | Dimming drive circuit, dimming controller and LED lamp | |
| CN104010420B (en) | Adjustable color temperature module, the LED drive circuit of adjustable color temperature and system | |
| CN206774210U (en) | A kind of screen luminance of mobile phone control device | |
| CN214384943U (en) | Dimming and color mixing circuit compatible with silicon controlled rectifier, dimming and color mixing device and lamp | |
| CN211959621U (en) | LED lamp with dimming function | |
| CN112004278A (en) | PWM-controlled stroboflash-free dimming and color-adjusting LED driving circuit and LED driving power supply | |
| CN205213122U (en) | But LED lamp area luminance regulation control circuit | |
| CN210629925U (en) | LED control circuit and device compatible with silicon controlled rectifier dimmer | |
| CN213126532U (en) | PWM-controlled stroboflash-free dimming and color-adjusting driving circuit and driving power supply | |
| CN209517566U (en) | A kind of capacitor quick discharging circuit | |
| CN114828331A (en) | Dimming and color mixing circuit compatible with silicon controlled rectifier, dimming and color mixing device and lamp | |
| CN217206838U (en) | Visual operation indicating system applied to air compressor | |
| CN109949753A (en) | A kind of power supply unit of backlight | |
| CN212970167U (en) | Light source driving circuit capable of continuously dimming, light source driving device and lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: LED lamp synchronization control device and method Effective date of registration: 20221031 Granted publication date: 20210622 Pledgee: Meiwan Sub-branch of Jiaxing Bank Co.,Ltd. Pledgor: ZHEJIANG SHENGHUI LIGHTING Co.,Ltd. Registration number: Y2022990000760 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |