CN110366291B - Power supply driving and lamp automatically matched with loads of light sources with multiple specifications and driving method - Google Patents
Power supply driving and lamp automatically matched with loads of light sources with multiple specifications and driving method Download PDFInfo
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- CN110366291B CN110366291B CN201910605060.9A CN201910605060A CN110366291B CN 110366291 B CN110366291 B CN 110366291B CN 201910605060 A CN201910605060 A CN 201910605060A CN 110366291 B CN110366291 B CN 110366291B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/40—Details of LED load circuits
- H05B45/44—Details of LED load circuits with an active control inside an LED matrix
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Abstract
The invention provides a power supply drive, a lamp and a driving method which are automatically matched with loads of a plurality of light sources, wherein the power supply drive comprises a digital power supply drive and a feedback circuit, the power supply drive comprises a detection mode and a normal working mode, in the detection mode, a first controller provides a first voltage to the feedback circuit through the drive circuit, the feedback circuit provides a feedback signal to the first controller through a first detection resistor, the first controller enters the normal working mode after the acquired feedback signal accords with a predefined format, the first controller provides a preset voltage to the feedback circuit through the drive circuit, the feedback circuit does not work, and the light source to be driven emits light. Therefore, the first controller knows the working requirement of the light source through the feedback information of the feedback circuit in the detection mode, and provides the voltage meeting the working requirement of the light source for the light source in the normal working mode, so that one power supply drive can be automatically matched with the light source loads of various specifications.
Description
Technical Field
The invention relates to the technical field of lamp driving, in particular to a power supply driving method, a lamp and a driving method for automatically matching with loads of multiple light sources.
Background
In conventional LED light fixtures, the driving power supply needs to be matched to the current or power of the light fixture one by one, and therefore, multiple light fixtures of different specifications may need to be matched to multiple driving power supplies of different specifications. Although the traditional digital drive can be matched with a plurality of lamps with different specifications, the matching with the lamps with different specifications can be realized by manually setting or adding wiring and the like.
Disclosure of Invention
The present invention has been made in view of the above problems, and has as its object to provide a power supply drive, a luminaire and a driving method for automatically matching loads of a multi-specification light source that overcomes or at least partially solves the above problems.
According to one aspect of the invention, a power supply driver automatically matched with loads of a plurality of light sources is provided, the power supply driver comprises a digital power supply driver and a feedback circuit with an input end and a feedback end, wherein the digital power supply driver comprises a first controller, a driving circuit with an input end and an output end and a first detection resistor, the first controller is provided with a PWM end and an ADC end, the PWM end is connected with the input end of the driving circuit, the output end of the driving circuit is connected with the input end of the feedback circuit and the anode of a light source to be driven, and the ADC end is connected with the feedback end of the feedback circuit and the first detection resistor;
The power supply drive comprises a detection mode and a normal working mode, and in the detection mode, the first controller provides a first voltage to the feedback circuit through the drive circuit; the feedback circuit provides a feedback signal to the first controller through the first detection resistor; after the acquired feedback signal accords with a predefined format, the first controller drives the power supply to enter a normal working mode;
in the normal working mode, a first controller provides preset voltage to the feedback circuit through the driving circuit, the feedback circuit does not work, and the light source to be driven emits light; wherein the preset voltage is determined according to the feedback signal in the predefined format.
Optionally, the feedback circuit includes: a constant voltage power supply circuit, a high voltage turn-off circuit, and a second controller, wherein,
the constant voltage power supply circuit is provided with an input end and an output end, wherein the input end of the constant voltage power supply circuit is used as the input end of the feedback circuit to be connected with the output end of the driving circuit, the output end of the constant voltage power supply circuit is connected with the second controller, and the constant voltage power supply circuit is configured to provide constant voltage for the second controller when receiving the first voltage output by the driving circuit; and stopping power supply to the second controller after receiving the preset voltage output by the driving circuit;
The high-voltage turn-off circuit is provided with an input end and a control end, wherein the input end is connected with the output end of the driving circuit, the control end is connected with the constant-voltage power supply circuit, and the high-voltage turn-off circuit is configured to turn off the connection between the constant-voltage power supply circuit and the driving circuit when receiving a preset voltage output by the driving circuit;
the second controller is provided with a power supply end and an output end, the power supply end is connected with the output end of the constant voltage power supply circuit, the output end of the second controller is used as the feedback end of the feedback circuit to be connected with the ADC end, and the second controller is configured to generate a corresponding high-low level feedback signal in a predefined format according to the preset specification parameters of the light source and feed the feedback signal back to the ADC end after receiving the power supply of the constant voltage power supply circuit.
Optionally, the constant voltage power supply circuit includes: resistor R2, voltage regulator Z1, resistor R5, triode Q3,
one end of the resistor R2 is used as an input end of a constant voltage power supply circuit to be connected with an output end of the driving circuit and one end of the resistor R5, the other end of the resistor R2 is connected with a cathode of the voltage stabilizing tube Z1, and an anode of the voltage stabilizing tube Z1 is connected with a cathode of the light source;
the other end of the resistor R5 is connected with the collector electrode of the triode Q3, the emitter electrode of the triode Q3 is used as the output end of the constant voltage power supply circuit to be connected with the power supply end of the second controller, and the base electrode of the triode Q3 is connected with the connection point of the resistor R2 and the voltage stabilizing tube Z1;
After the driving circuit outputs the first voltage, the first voltage reaches the conducting voltage of the triode Q3, the triode Q3 is conducted, and the voltage stabilizing tube Z1 is used for providing stable voltage for the second controller.
Optionally, the high voltage shutdown circuit includes: a triode Q2, a voltage stabilizing tube Z2, a resistor R3 and a resistor R4 which are sequentially connected in series between the output end of the driving circuit and the negative electrode of the light source,
the cathode of the voltage stabilizing tube Z2 is used as the input end of the high-voltage turn-off circuit and is connected with the output end of the driving circuit;
the base electrode of the triode Q2 is connected with the connection point of the resistor R3 and the resistor R4, the collector electrode is used as the control end of the high-voltage turn-off circuit to be connected with the cathode of the voltage stabilizing tube Z1, and the emitter electrode is connected with the negative electrode of the light source; one end of the resistor R4, which is not connected with the resistor R3, is connected with the negative electrode of the light source;
after the driving circuit outputs the preset voltage, the triode Q2 is conducted, and the triode Q3 is controlled to be cut off, so that the constant voltage power supply circuit is controlled not to supply power to the second controller.
Optionally, the power supply driving further includes:
the current increasing circuit is provided with an input end and an output end, wherein the input end of the current increasing circuit is connected with the output end of the second controller, the output end of the current increasing circuit is connected with the ADC end and the first detection resistor, and the current of the feedback signal is increased when the current increasing circuit receives a high-level feedback signal output by the second controller.
Optionally, the current increasing circuit includes: resistor R6, resistor R1, triode Q1, wherein,
the base electrode of the triode Q1 is connected with one end of the resistor R6, the collector electrode is connected with one end of the resistor R1, and the emitter electrode serving as the output end of the current increasing circuit is connected with the first detection resistor;
the other end of the resistor R6 is used as the input end of the current increasing circuit to be connected with the output end of the second controller, and the other end of the resistor R1 is connected with the output end of the constant voltage power supply circuit.
Optionally, the first detection resistor is further connected to the negative electrode of the light source, and is further configured to provide a current and/or voltage signal of the light source in a light emitting state to the first controller, so that the first controller detects the working state of the light source.
Optionally, the digital power supply drive further comprises:
the switching tube is provided with a first end, a second end and a control end, the switching tube is connected with the first detection resistor in parallel through the first end and the second end, the control end receives a control signal of the first controller or an external voltage control circuit and is configured to control the switching tube to be conducted by utilizing the control signal after the driving circuit outputs a preset voltage so as to short-circuit the first detection resistor.
Optionally, the digital power supply drive further comprises:
the second detection resistor is connected in series with the switching tube and is configured to control the switching tube to be conducted by utilizing the control signal after the driving circuit outputs a preset voltage so as to provide current and/or voltage signals of the light source in a light-emitting state to the first controller for the first controller to detect the working state of the light source;
the resistance value of the second detection resistor is smaller than that of the first detection resistor.
Optionally, the switching tube comprises a triode or a MOS tube.
According to another aspect of the present invention, there is also provided a lamp, including:
the power supply drive of any of the embodiments above that automatically matches a multi-specification light source load;
and a light source load connected with the power supply drive.
According to still another aspect of the present invention, there is provided a power supply driving method for automatically matching loads of a multi-specification light source, applied to a power supply driving including a digital power supply driving and a feedback circuit, the digital power supply driving including a first controller, a driving circuit connected to the first controller, and a first detection resistor, the method comprising:
the power supply drive is electrified and then enters a detection mode, and in the detection mode, the first controller adopts a PWM end to control the drive circuit to provide a first voltage for the feedback circuit and detects a voltage and/or current signal on the first detection resistor;
The feedback circuit receives the first voltage output by the driving circuit, generates a high-low level signal with a predefined format according to the preset specification parameters of the light source, and feeds the high-low level signal back to the first controller as a feedback signal through the first detection resistor;
the first controller acquires the feedback signal by detecting the voltage and/or current signal on the first detection resistor, and if the acquired feedback signal accords with a predefined format, corresponding preset voltage is determined according to the feedback signal, and the power supply drive enters a normal working mode;
in a normal working mode, the first controller controls the output voltage of the driving circuit to rise to a preset voltage, and the light source emits light under the preset voltage;
and the feedback circuit stops working after receiving the preset voltage output by the driving circuit.
Optionally, the feedback circuit includes a second controller and a constant voltage power supply circuit connected to the second controller, the feedback circuit receives a first voltage output by the driving circuit, generates a high-low level signal in a predefined format according to a preset specification parameter of the light source, and feeds back the high-low level signal as a feedback signal to the first controller through the first detection resistor, and includes:
The feedback circuit receives the first voltage output by the driving circuit through the constant voltage power supply circuit and then provides constant voltage for the second controller;
and after receiving the power supply of the constant-voltage power supply circuit, the second controller generates a high-low level signal in the predefined format according to the preset specification parameters of the light source and feeds the high-low level signal back to the first controller as a feedback signal through the first detection resistor.
Optionally, the feedback circuit further includes a high-voltage turn-off circuit, and the feedback circuit stops working after receiving the preset voltage output by the driving circuit, including:
and when the high-voltage turn-off circuit contained in the feedback circuit receives the preset voltage output by the driving circuit, the constant-voltage power supply circuit is disconnected from the driving circuit, so that the constant-voltage power supply circuit stops supplying power to the second controller, and the feedback circuit stops working.
Optionally, the power supply driving further includes a current increasing circuit connected to the second controller and the first detection resistor, respectively, and the method further includes:
when the second controller outputs a high level, the current of the high level is increased by the current increasing circuit and is output to the first controller.
Optionally, the first detection resistor is further connected to the light source, and the method further includes:
in a normal working mode, the first controller detects the working state of the light source by detecting the voltage and/or current signals on the first detection resistor.
Optionally, the power supply driving further includes a switching tube connected in parallel with the first detection resistor, and the method further includes:
in a normal working mode, the first controller directly sends a control signal to the switching tube or informs an external voltage control circuit to send a control signal to the switching tube to control the switching tube to be conducted;
and after the switching tube is conducted, the first detection resistor is short-circuited.
Optionally, the power supply driving further includes a second detection resistor connected in series with the switching tube, and a resistance value of the second detection resistor is smaller than a resistance value of the first detection resistor, and the method further includes:
the first detection resistor is short-circuited after the switching tube is conducted, and the second detection resistor is connected to the first controller;
in a normal working mode, the first controller detects the working state of the light source by detecting the voltage and/or current signals on the second detection resistor.
In the embodiment of the invention, the power supply drive comprises a detection mode and a normal working mode, and in the detection mode, the first controller supplies a first voltage to the feedback circuit through the drive circuit so that the feedback circuit works and the light source does not light. The feedback circuit feeds back information in a predefined format generated according to the specification parameters of the light source to the first controller so as to feed back the voltage required by normal operation of the light source to the first controller. After the first controller detects the information in the predefined format in the detection mode, the preset voltage meeting the working requirement of the light source is determined, the power supply is driven to enter the normal working mode, and the first controller rises the output voltage of the driving circuit to the preset voltage meeting the working requirement of the light source in the normal working mode, so that the automatic matching with the load of the light source is realized. The first controller is used for knowing the working requirement of the light source through the feedback information of the feedback circuit in the detection mode, and providing the voltage meeting the working requirement of the light source for the light source in the normal working mode, so that one power supply driver can automatically match with light source loads of different specifications without setting by an installer, without increasing the number of control interface wires or changing the traditional simple wiring mode, the matching process of the power supply driver is simplified, and the flexibility and the adaptability of the power supply driver application are greatly improved.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.
The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read in conjunction with the accompanying drawings.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 shows a schematic diagram of a power supply drive according to one embodiment of the invention;
fig. 2 is a schematic diagram showing a circuit configuration of a power supply drive according to another embodiment of the present invention;
FIG. 3 is a schematic diagram of a first sense resistor and a switching tube connected in parallel according to one embodiment of the invention;
FIG. 4 is a schematic diagram showing a structure in which a second sense resistor is connected in series to the switching tube shown in FIG. 3 according to an embodiment of the present invention;
fig. 5 shows a flow diagram of a power driving method for automatically matching a multi-specification light source load according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
In order to solve the technical problems, the embodiment of the invention provides a power supply driver which is automatically matched with loads of a plurality of light sources. Fig. 1 shows a schematic diagram of a power supply drive according to an embodiment of the invention. Referring to fig. 1, the power supply drive of the embodiment of the present invention includes a digital power supply drive 11 and a feedback circuit 12 having an input terminal 21 and a feedback terminal 22, wherein the digital power supply drive 11 includes a first controller 111, a drive circuit 112 having an input terminal 23 and an output terminal 24, and a first detection resistor 113.
The first controller 111 has a PWM terminal and an ADC terminal, the PWM terminal is connected to the input terminal 23 of the driving circuit 112, the output terminal 24 of the driving circuit 112 is connected to the input terminal 21 of the feedback circuit 12 and the positive electrode of the light source to be driven (not shown in fig. 1), and the ADC terminal is connected to the feedback terminal and the first detection resistor 113, respectively.
The power supply drive includes a detection mode in which the first controller 111 supplies a first voltage to the feedback circuit 12 via the drive circuit 112 and a normal operation mode in which the feedback circuit 12 supplies a feedback signal to the first controller 111 via the first detection resistor 113. The first controller 111 drives the power supply into the normal operation mode after the acquired feedback signal conforms to the predefined format. In this embodiment, the first controller 111 detects the voltage and/or current signal on the first detection resistor 113 through the ADC terminal to obtain the feedback signal.
In the normal operation mode, the first controller 111 provides the preset voltage to the feedback circuit 12 via the driving circuit 112, at this time, the feedback circuit 12 does not operate, and the light source to be driven emits light.
In this implementation, the preset voltage is determined from a feedback signal in a predefined format. The feedback signal in the predefined format carries parameter information such as current, voltage, power and the like which conform to the operation of the light source, and the first controller 111 can analyze and restore the corresponding parameter information such as current, voltage, power and the like from the feedback signal, so as to determine the preset voltage.
In the embodiment of the invention, the first controller supplies the first voltage to the feedback circuit through the driving circuit in the detection mode to enable the feedback circuit to work without lighting the light source. The feedback circuit feeds back information in a predefined format generated according to the specification parameters of the light source to the first controller so as to feed back the voltage required by normal operation of the light source to the first controller. After the first controller detects the information in the predefined format in the detection mode, the preset voltage meeting the working requirement of the light source is determined, the power supply is driven to enter the normal working mode, and the first controller rises the output voltage of the driving circuit to the preset voltage meeting the working requirement of the light source in the normal working mode, so that the automatic matching with the load of the light source is realized. The first controller is used for knowing the working requirement of the light source through the feedback information of the feedback circuit in the detection mode, and providing the voltage meeting the working requirement of the light source for the light source in the normal working mode, so that one power supply driver can automatically match with light source loads of different specifications without setting by an installer, the number of control interface wiring is not increased or the traditional simple wiring mode is changed, the matching process of the power supply driver is simplified, and the flexibility and the adaptability of the power supply driver application are greatly improved.
In the embodiment of the present invention, the first controller 111 provides a lower voltage to the feedback circuit 12 before providing the first voltage to the feedback circuit 12 via the driving circuit 112, and if the voltage cannot reach the operating voltage of the feedback circuit 12, the ADC terminal cannot obtain the feedback signal. The first controller 111 operates the feedback circuit 12 after the voltage provided by the feedback circuit 12 continues to increase to the first voltage, the feedback circuit 12 provides a feedback signal to the first controller 111, and the first controller 111 detects the feedback signal.
In this embodiment, the predefined format is predefined as a signaling protocol between the first controller 111 and the feedback circuit 12 to facilitate the identification of the detected signal by the first controller 111. In addition, the first controller 111 detects that the voltage and/or current signals on the first detection resistor 113 are analog signals, so that the detected analog signals are converted into digital signals internally, and the specification parameters of the light source, such as the current, voltage, power and other parameter information of the light source, are restored according to the digital signals.
In an embodiment of the present invention, one end of the first detection resistor 113 is further connected to the negative electrode of the light source, the other end is further connected to the ground, and the Vss pin of the first controller 111 is also connected to the ground, so that when the first controller 111 is in the normal operating mode, the first detection resistor 113 can further provide the current and/or voltage signal of the light source in the light emitting state to the first controller 111, so that the first controller 111 detects the operating state of the light source. In an embodiment of the present invention, an indicator light may be further connected to the first controller 111, or the first controller 111 may be connected to a communication interface of an external communication device, and when the first controller 111 does not detect information meeting a predefined format in the detection mode, or the detected information exceeds the capability range of the digital power supply driver 11, the normal working mode is not entered, and the first controller 111 may prompt the user by lighting the indicator light, or sending a prompt message to the external communication device through the communication interface, or the like.
In this embodiment, if the first controller 111 smoothly enters the normal operation mode and the working state of the light source can be detected by the first detection resistor 113, if the light source is abnormal, such as reaching the highest voltage limit, the light source cannot work at the rated current, voltage or power, or the like, or can be prompted by an indicator light or a communication device with a communication interface.
Referring to fig. 2, in an embodiment of the present invention, the first controller 111 (shown in fig. 1) may use a microprocessor U1, and the light source may use an LED light source, and of course, the LED light source may use a chip on board COB (Chip On Board), or may use a filament lamp, etc., and the embodiment of the present invention does not specifically limit the types of the first controller 111 and the light source. In addition, the driving circuit in the embodiment of the present invention may be any driving circuit in the prior art, and the embodiment of the present invention is not particularly limited.
In the embodiment of the present invention, the feedback circuit 12 includes therein a constant voltage power supply circuit 121, a high voltage shut off circuit 122, and a second controller U2.
The constant voltage power supply circuit 121 has an input terminal connected to the output terminal 24 of the driving circuit (shown in fig. 1) as the input terminal of the feedback circuit 12, and an output terminal connected to the second controller U2. The constant voltage power supply circuit 121 may supply a constant voltage to the second controller U2 when the received output voltage reaches the first voltage output from the driving circuit, and stop supplying power to the second controller U2 after receiving a preset voltage output from the driving circuit. The constant voltage power supply circuit 121 in this embodiment is mainly responsible for supplying power to other and peripheral circuits of the second controller U2 later.
The high-voltage shutdown circuit 122 has an input terminal connected to the output terminal 24 of the drive circuit, and a control terminal connected to the constant-voltage power supply circuit 121. The high-voltage turn-off circuit 122 starts to operate upon receiving a preset voltage output from the driving circuit, and controls the constant-voltage power supply circuit 121 to disconnect from the driving circuit, thereby making the power consumption of the feedback circuit 12 close to zero when the light source emits light.
The second controller U2 has a power supply terminal VDD and an output terminal P1, the power supply terminal VDD is connected to the output terminal of the constant voltage power supply circuit 121, and the output terminal P1 thereof is connected to the ADC terminal of the microprocessor U1 as the feedback terminal of the feedback circuit 12. After receiving the power supply of the constant voltage power supply circuit 121, the second controller U2 generates a high-low level signal in a corresponding predefined format according to the preset specification parameters of the light source, and feeds the high-low level signal back to the ADC end of the microprocessor U1. I.e. the output P1 of the second controller U2 outputs a digital switching feedback signal. In this embodiment, the second controller U2 may also employ a microprocessor MCU (Microcontroller Unit), such as a low power microprocessor, for example, a microprocessor with an operating current less than 1 MA.
With continued reference to fig. 1 and 2, in an embodiment of the present invention, the constant voltage power supply circuit 121 may specifically include a resistor R2, a regulator Z1, a resistor R5, and a transistor Q3. One end of the resistor R2 is used as an input end of the constant voltage power supply circuit 121 to be connected with the output end 24 of the driving circuit and one end of the resistor R5, the other end of the resistor R2 is connected with a cathode of the voltage stabilizing tube Z1, and an anode of the voltage stabilizing tube Z1 is connected with a negative electrode of the light source. The other end of the resistor R5 is connected with the collector electrode of the triode Q3, the emitter electrode of the triode Q3 is used as the output end of the constant voltage power supply circuit 121 to be connected with the power supply end of the second controller U2, and the base electrode is connected with the connection point of the resistor R2 and the voltage stabilizing tube Z1. The transistor Q3 may be replaced by a MOS transistor, which is not specifically limited in the embodiment of the present invention.
In this embodiment, after the driving circuit outputs the first voltage, the first voltage reaches the conducting voltage of the transistor Q3, so as to control the transistor Q3 to be conducted, and the voltage regulator tube Z1 is used to provide a stable voltage to the second controller U2. The output voltage of the constant voltage power supply circuit 121 in this embodiment is mainly determined by the regulator tube Z1. The withstand voltage value of the triode Q3 is not smaller than the maximum output voltage of the driving circuit or the working voltage value of the light source. The specified voltage in the embodiment of the invention can control the triode Q3 to be conducted so as to enable the second controller U2 to work normally, but the working voltage of the light source cannot be reached, and the light source is kept to be turned off.
With continued reference to fig. 1 and 2, in an embodiment of the present invention, the high-voltage shutdown circuit 122 mainly includes a regulator Z2, a transistor Q2, and a resistor R3 and a resistor R4 sequentially connected in series with the regulator Z2. The cathode of the voltage regulator tube Z2 is used as the input end of the high-voltage turn-off circuit 122 to be connected with the output end 24 of the driving circuit. The base electrode of the triode Q2 is connected with the connection point of the resistor R3 and the resistor R4, the collector electrode is used as the control end of the high-voltage turn-off circuit 122 to be connected with the cathode of the voltage stabilizing tube Z1, and the emitter electrode is connected with the cathode of the light source. One end of the resistor R4, which is not connected with the resistor R3, is connected with the negative electrode of the light source. The transistor Q2 may be replaced by a MOS transistor, which is not specifically limited in the embodiment of the present invention.
In this embodiment, the first voltage of the output of the driving circuit cannot reach the conduction threshold of the transistor Q2, so the transistor Q2 is kept off under the first voltage, and when the voltage of the output of the driving circuit increases to the preset voltage, the preset voltage can reach the conduction threshold of the transistor Q2, so as to control the transistor Q2 to be turned on. After the triode Q2 is turned on, the base voltage of the triode Q3 is pulled down to 0, so that the triode Q3 can be controlled to be turned off, and the constant voltage power supply circuit 121 is controlled not to supply power to the second controller U2 any more, so that the power consumption of the feedback circuit 12 is close to zero when the light source emits light. The turn-on threshold of transistor Q2 in this embodiment is significantly less than the voltage required to start the light source.
With continued reference to fig. 2, in an embodiment of the present invention, the power supply drive further includes a current increasing circuit 123, where the current increasing circuit 123 has an input terminal connected to the output terminal P1 of the second controller U2 and an output terminal connected to the ADC terminal of the microprocessor U1 and the resistor Ri. The current increasing circuit 123 may increase the current of the high level when receiving the high level output from the second controller U2.
In an embodiment of the present invention, the current increasing circuit 123 may specifically include a resistor R6, a resistor R1, and a triode Q1, wherein a base of the triode Q1 is connected to one end of the resistor R6, a collector is connected to one end of the resistor R1, and an emitter is connected to the resistor Ri as an output end of the current increasing circuit 123. The other end of the resistor R6 is connected to the output end of the second controller U2 as the input end of the current increasing circuit 123, and the other end of the resistor R1 is connected to the output end of the constant voltage power supply circuit 121. The transistor Q1 may be replaced by a MOS transistor, which is not specifically limited in the embodiment of the present invention.
After the second controller U2 is powered on, a corresponding high-low level signal can be repeatedly generated according to the preset specification parameters of the light source, and the signal is fed back to the microprocessor U1 by controlling the on/off of the triode Q1 according to a predetermined format. When the output end P1 of the second controller U2 outputs a high level, the triode Q1 is conducted, and the resistor R1 is provided with current to pass through, so that the current on the resistor Ri is controlled to be increased. When the output terminal P1 of the second controller U2 outputs a low level, the transistor Q1 is turned off, and no current flows through the resistor R1, and the current flowing through the resistor Ri decreases.
With continued reference to fig. 2, in an embodiment of the present invention, the feedback circuit further includes a diode D3, where an anode of the diode D3 is connected to the output end of the driving circuit, and a cathode of the diode D is connected to the cathode of the voltage stabilizing tube Z2, so that the driving circuit and the cathode of the light source can be effectively prevented from being reversely connected, and if the driving circuit and the cathode of the light source are reversely connected, the feedback circuit will not work.
In another embodiment of the present invention, the feedback circuit further includes a capacitor C2, one end of which is connected to the power supply terminal VDD of the second controller, and the other end of which is connected to the negative electrode of the light source. The capacitor C2 may enable the second controller to obtain a more stable voltage.
In another embodiment of the present invention, the feedback circuit further includes a diode D4 and a resistor R7 connected in series, and is disposed between the power supply terminal VDD of the second controller and the output terminal of the constant voltage power supply circuit. The positive electrode of the diode D4 is connected with the emitter electrode of the triode Q3 and used for preventing electric current from flowing backwards from the second controller. The other end of the resistor R7, which is not connected with the diode D4, is connected with the power supply end VDD of the second controller, so that when the triode Q1 is switched on or the output voltage fluctuates, the capacitor C2 can be reduced to charge, and the peak and fluctuation amplitude of the current caused in the process that the second controller is powered on can be avoided. Therefore, when the feedback circuit works, the voltage change on the first detection resistor can accurately reflect the high-low level change of the output end P1 of the second controller.
Referring to fig. 2 and 3, in an embodiment of the present invention, in order to avoid that the loss on the resistor Ri or the resistance value of the resistor Ri is too large to affect the normal operation of the light source after the light source is turned on, a switching tube Qi may be connected in parallel to the resistor Ri. The switching tube Qi has a first terminal, a second terminal and a control terminal (ONOFF) which is connected in parallel to the resistor Ri via the first terminal and the second terminal, the control terminal being used for receiving control signals of the microprocessor U1 or an external voltage control circuit. The switching tube Qi may be turned on by controlling the switching tube Qi with a control signal to short-circuit the resistor Ri after the output voltage of the driving circuit rises to a preset voltage.
Referring to fig. 2 and fig. 4, if the above embodiment is simply to connect the switching tube Qi in parallel to the resistor Ri, then the working state of the light source cannot be effectively detected after the microprocessor U1 enters the normal working mode, so, in order to achieve detection of the working state of the light source and ensure normal working after the light source is turned on, in the embodiment of the present invention, a second detection resistor Ri2 may be connected in series to the switching tube Qi, and the resistance value of the second detection resistor Ri2 is smaller than that of the resistor Ri.
After the driving circuit outputs the preset voltage, the switching tube Qi can be controlled to be conducted by using the control signal, the resistor Ri is shorted, and the current and/or voltage signal of the light source in the light emitting state is provided to the microprocessor U1 through the second detection resistor Ri2, so that the microprocessor U1 can detect the working state of the light source.
In the embodiment of the invention, the switching tube Qi can be an ultralow-resistance MOS tube or triode. The switching tube Qi shown in fig. 3 and 4 adopts a MOS tube, and the drain electrode and the source electrode of the MOS tube are respectively used as a first end and a second end, and the gate electrode is used as a control end.
Based on the same inventive concept, the embodiment of the invention also provides a lamp, which comprises the power supply drive automatically matched with the multi-specification light source load and the light source load connected with the power supply drive.
Based on the same inventive concept, the embodiment of the invention also provides a power supply driving method automatically matched with loads of a plurality of light sources, and the method is applied to power supply driving comprising a digital power supply driving and a feedback circuit, wherein the digital power supply driving comprises a first controller, a driving circuit connected with the first controller and a first detection resistor. Fig. 5 shows a flow diagram of a power driving method for automatically matching a multi-specification light source load according to an embodiment of the present invention. Referring to fig. 5, the method includes at least the following steps S502 to S510.
Step S502, after power supply driving is powered on, the first controller enters a detection mode, and in the detection mode, the first controller controls the driving circuit to provide a first voltage to the feedback circuit by adopting a PWM end and detects a voltage and/or current signal on the first detection resistor.
In step S504, the feedback circuit receives the first voltage output by the driving circuit, generates a high-low level signal in a predefined format according to the preset specification parameters of the light source, and feeds back the high-low level signal as a feedback signal to the first controller through the first detection resistor.
In step S506, the first controller acquires a feedback signal by detecting a voltage and/or current signal on the first detection resistor, and determines a corresponding preset voltage according to the feedback signal if the acquired feedback signal accords with a predefined format, so as to drive the power supply to enter a normal working mode.
In step S508, in the normal operation mode, the first controller controls the output voltage of the driving circuit to rise to a preset voltage, and the light source emits light at the preset voltage.
In step S510, the feedback circuit stops working after receiving the preset voltage output by the driving circuit.
Referring to step S504 above, in an embodiment of the present invention, the feedback circuit mainly includes the second controller and the constant voltage power supply circuit connected thereto, and the constant voltage power supply circuit may be used to receive the first voltage output from the driving circuit and supply the constant voltage to the second controller when step S504 is performed. After receiving the power supply of the constant voltage power supply circuit, the second controller generates a corresponding high-low level signal with a predefined format according to the preset specification parameters of the light source and feeds the signal back to the first controller through the first detection resistor.
Referring to the above steps S508-S510, in an embodiment of the present invention, the feedback circuit further includes a high voltage turn-off circuit, and when the step S508 is executed, the high voltage turn-off circuit is adopted to disconnect the constant voltage power supply circuit from the driving circuit when receiving the preset voltage output by the driving circuit, so that the constant voltage power supply circuit stops supplying power to the second controller, and the feedback circuit stops working and stops feeding back the high-low level signal to the first controller.
In an embodiment of the present invention, the power supply driving further includes a current increasing circuit connected to the second controller and the first detection resistor, respectively, and when the second controller outputs a high level, the current of the high level may be increased by the current increasing circuit and output to the first controller.
In an embodiment of the present invention, the first detection resistor may be further connected to the light source, and after the first controller enters the normal working mode, the working state of the light source may be detected by detecting a voltage and/or current signal on the first detection resistor.
In an embodiment of the present invention, the power supply driving may further include a switching tube connected in parallel with the first detection resistor, so as to reduce loss caused on the first detection resistor after the light source is normally turned on, or to affect normal operation after the light source is turned on due to an excessive resistance value of the first detection resistor, where the switching tube preferably uses an ultra-low resistance switching tube. The first controller directly sends a control signal to the switching tube or informs an external voltage control circuit to send the control signal to the switching tube in a normal working mode to control the switching tube to be conducted. The first detection resistor is short-circuited after the switching tube is conducted.
In this embodiment, the power supply driver further includes a second detection resistor connected in series with the switching tube, and the resistance value of the second detection resistor is smaller than that of the first detection resistor, when the switching tube is turned on and then the first detection resistor is shorted, the second detection resistor can be connected to the first controller, and the first controller detects the working state of the light source by detecting the voltage and/or current signals on the second detection resistor in the normal working mode.
According to any one of the above preferred embodiments or a combination of the preferred embodiments, the following advantageous effects can be achieved according to the embodiments of the present invention:
in the embodiment of the invention, the power supply drive comprises a detection mode and a normal working mode, and in the detection mode, the first controller supplies a first voltage to the feedback circuit through the drive circuit so that the feedback circuit works and the light source does not light. The feedback circuit feeds back information in a predefined format generated according to the specification parameters of the light source to the first controller so as to feed back the voltage required by normal operation of the light source to the first controller. After the first controller detects the information in the predefined format in the detection mode, the preset voltage meeting the working requirement of the light source is determined, the power supply is driven to enter the normal working mode, and the first controller rises the output voltage of the driving circuit to the preset voltage meeting the working requirement of the light source in the normal working mode, so that the automatic matching with the load of the light source is realized. The first controller is used for knowing the working requirement of the light source through the feedback information of the feedback circuit in the detection mode, and providing the voltage meeting the working requirement of the light source for the light source in the normal working mode, so that one power supply driver can automatically match with light source loads of different specifications without setting by an installer, without increasing the number of control interface wires or changing the traditional simple wiring mode, the matching process of the power supply driver is simplified, and the flexibility and the adaptability of the power supply driver application are greatly improved.
It will be clear to those skilled in the art that the specific working procedures of the above-described method may refer to the corresponding procedures in the foregoing system, apparatus and unit embodiments, and are not described herein for brevity.
In addition, each functional unit in the embodiments of the present invention may be physically independent, two or more functional units may be integrated together, or all functional units may be integrated in one processing unit. The integrated functional units may be implemented in hardware or in software or firmware.
Those of ordinary skill in the art will appreciate that: the integrated functional units, if implemented in software and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in essence or in whole or in part in the form of a software product stored in a storage medium, comprising instructions for causing a computing device (e.g., a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present invention when the instructions are executed. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a read-only memory (ROM), a random-access memory (RAM), a magnetic disk, or an optical disk, etc.
Alternatively, all or part of the steps of implementing the foregoing method embodiments may be implemented by hardware (such as a personal computer, a server, or a computing device such as a network device) associated with program instructions, where the program instructions may be stored on a computer-readable storage medium, and where the program instructions, when executed by a processor of the computing device, perform all or part of the steps of the method according to the embodiments of the present invention.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all technical features thereof can be replaced by others within the spirit and principle of the present invention; such modifications and substitutions do not depart from the scope of the invention.
Claims (15)
1. The power supply driver is characterized by comprising a digital power supply driver and a feedback circuit with an input end and a feedback end, wherein the digital power supply driver comprises a first controller, a driving circuit with an input end and an output end and a first detection resistor, the first controller is provided with a PWM end and an ADC end, the PWM end is connected with the input end of the driving circuit, the output end of the driving circuit is connected with the input end of the feedback circuit and the anode of a light source to be driven, and the ADC end is connected with the feedback end of the feedback circuit and the first detection resistor;
The power supply drive comprises a detection mode and a normal working mode, and in the detection mode, the first controller provides a first voltage to the feedback circuit through the drive circuit; the feedback circuit provides a feedback signal to the first controller through the first detection resistor; after the acquired feedback signal accords with a predefined format, the first controller drives the power supply to enter a normal working mode;
in the normal working mode, a first controller provides preset voltage to the feedback circuit through the driving circuit, the feedback circuit does not work, and the light source to be driven emits light; wherein the preset voltage is determined according to the feedback signal in the predefined format; the feedback signal in the predefined format carries current, voltage and power which accord with the work of the light source, and the first controller analyzes and restores the corresponding current, voltage and power from the feedback signal so as to determine the preset voltage;
the feedback circuit includes: a constant voltage power supply circuit, a high voltage turn-off circuit, and a second controller, wherein,
the constant voltage power supply circuit is provided with an input end and an output end, wherein the input end of the constant voltage power supply circuit is used as the input end of the feedback circuit to be connected with the output end of the driving circuit, the output end of the constant voltage power supply circuit is connected with the second controller, and the constant voltage power supply circuit is configured to provide constant voltage for the second controller when receiving the first voltage output by the driving circuit; and stopping power supply to the second controller after receiving the preset voltage output by the driving circuit;
The high-voltage turn-off circuit is provided with an input end and a control end, wherein the input end is connected with the output end of the driving circuit, the control end is connected with the constant-voltage power supply circuit, and the high-voltage turn-off circuit is configured to turn off the connection between the constant-voltage power supply circuit and the driving circuit when receiving a preset voltage output by the driving circuit;
the second controller is provided with a power supply end and an output end, the power supply end is connected with the output end of the constant voltage power supply circuit, the output end of the second controller is used as the feedback end of the feedback circuit to be connected with the ADC end, and the second controller is configured to generate a corresponding high-low level feedback signal in a predefined format according to the preset specification parameters of the light source and feed the feedback signal back to the ADC end after receiving the power supply of the constant voltage power supply circuit.
2. The power supply drive according to claim 1, wherein the constant voltage power supply circuit includes: resistor R2, voltage regulator Z1, resistor R5 and triode Q3,
one end of the resistor R2 is used as an input end of a constant voltage power supply circuit to be connected with an output end of the driving circuit and one end of the resistor R5, the other end of the resistor R2 is connected with a cathode of the voltage stabilizing tube Z1, and an anode of the voltage stabilizing tube Z1 is connected with a cathode of the light source;
the other end of the resistor R5 is connected with the collector electrode of the triode Q3, the emitter electrode of the triode Q3 is used as the output end of the constant voltage power supply circuit to be connected with the power supply end of the second controller, and the base electrode of the triode Q3 is connected with the connection point of the resistor R2 and the voltage stabilizing tube Z1;
After the driving circuit outputs the first voltage, the first voltage reaches the conducting voltage of the triode Q3, the triode Q3 is conducted, and the voltage stabilizing tube Z1 is used for providing stable voltage for the second controller.
3. The power supply drive of claim 2, wherein the high voltage shutdown circuit comprises: a triode Q2, a voltage stabilizing tube Z2, a resistor R3 and a resistor R4 which are sequentially connected in series between the output end of the driving circuit and the negative electrode of the light source,
the cathode of the voltage stabilizing tube Z2 is used as the input end of the high-voltage turn-off circuit and is connected with the output end of the driving circuit;
the base electrode of the triode Q2 is connected with the connection point of the resistor R3 and the resistor R4, the collector electrode is used as the control end of the high-voltage turn-off circuit to be connected with the cathode of the voltage stabilizing tube Z1, and the emitter electrode is connected with the negative electrode of the light source; one end of the resistor R4, which is not connected with the resistor R3, is connected with the negative electrode of the light source;
after the driving circuit outputs the preset voltage, the triode Q2 is conducted, and the triode Q3 is controlled to be cut off, so that the constant voltage power supply circuit is controlled not to supply power to the second controller.
4. The power supply drive of claim 1, further comprising:
The current increasing circuit is provided with an input end and an output end, wherein the input end of the current increasing circuit is connected with the output end of the second controller, the output end of the current increasing circuit is connected with the ADC end and the first detection resistor, and the current of the feedback signal is increased when the current increasing circuit receives a high-level feedback signal output by the second controller.
5. The power supply drive of claim 4, wherein the current boost circuit comprises: resistor R6, resistor R1, and transistor Q1, wherein,
the base electrode of the triode Q1 is connected with one end of the resistor R6, the collector electrode is connected with one end of the resistor R1, and the emitter electrode serving as the output end of the current increasing circuit is connected with the first detection resistor;
the other end of the resistor R6 is used as the input end of the current increasing circuit to be connected with the output end of the second controller, and the other end of the resistor R1 is connected with the output end of the constant voltage power supply circuit.
6. The power supply drive of claim 1, wherein,
the first detection resistor is also connected with the negative electrode of the light source and is further configured to provide current and/or voltage signals of the light source in a light-emitting state to the first controller for the first controller to detect the working state of the light source.
7. The power supply drive of claim 6, wherein the digital power supply drive further comprises:
the switching tube is provided with a first end, a second end and a control end, the switching tube is connected with the first detection resistor in parallel through the first end and the second end, the control end receives a control signal of the first controller or an external voltage control circuit and is configured to control the switching tube to be conducted by utilizing the control signal after the driving circuit outputs a preset voltage so as to short-circuit the first detection resistor.
8. The power supply drive of claim 7, wherein the digital power supply drive further comprises:
the second detection resistor is connected in series with the switching tube and is configured to control the switching tube to be conducted by utilizing the control signal after the driving circuit outputs a preset voltage so as to provide current and/or voltage signals of the light source in a light-emitting state to the first controller for the first controller to detect the working state of the light source;
the resistance value of the second detection resistor is smaller than that of the first detection resistor.
9. The power supply drive of claim 7 or 8, wherein the switching tube comprises a triode or a MOS tube.
10. A light fixture, comprising:
the power supply drive of any one of claims 1-9 automatically matched to a multi-gauge light source load;
and a light source load connected with the power supply drive.
11. A power supply driving method for automatically matching a multi-specification light source load, characterized by being applied to a power supply driving comprising a digital power supply driving and a feedback circuit, wherein the digital power supply driving comprises a first controller, a driving circuit connected with the first controller and a first detection resistor, and the method comprises:
the power supply drive is electrified and then enters a detection mode, and in the detection mode, the first controller adopts a PWM end to control the drive circuit to provide a first voltage for the feedback circuit and detects a voltage and/or current signal on the first detection resistor;
the feedback circuit receives the first voltage output by the driving circuit, generates a high-low level signal with a predefined format according to the preset specification parameters of the light source, and feeds the high-low level signal back to the first controller as a feedback signal through the first detection resistor;
the first controller acquires the feedback signal by detecting the voltage and/or current signal on the first detection resistor, and if the acquired feedback signal accords with a predefined format, corresponding preset voltage is determined according to the feedback signal, and the power supply drive enters a normal working mode;
In a normal working mode, the first controller controls the output voltage of the driving circuit to rise to a preset voltage, and the light source emits light under the preset voltage;
the feedback circuit stops working after receiving the preset voltage output by the driving circuit; the feedback signal in the predefined format carries current, voltage and power which accord with the work of the light source, and the first controller analyzes and restores the corresponding current, voltage and power from the feedback signal so as to determine the preset voltage;
the feedback circuit comprises a second controller and a constant voltage power supply circuit connected with the second controller, the feedback circuit receives a first voltage output by the driving circuit, generates a high-low level signal in a predefined format according to preset specification parameters of the light source, and feeds back the high-low level signal as a feedback signal to the first controller through the first detection resistor, and the feedback circuit comprises:
the feedback circuit receives the first voltage output by the driving circuit through the constant voltage power supply circuit and then provides constant voltage for the second controller;
after receiving the power supply of the constant voltage power supply circuit, the second controller generates a high-low level signal in the predefined format according to the preset specification parameters of the light source and feeds the high-low level signal back to the first controller as a feedback signal through the first detection resistor;
The feedback circuit also comprises a high-voltage turn-off circuit, and the feedback circuit stops working after receiving the preset voltage output by the driving circuit, and comprises:
and when the high-voltage turn-off circuit contained in the feedback circuit receives the preset voltage output by the driving circuit, the constant-voltage power supply circuit is disconnected from the driving circuit, so that the constant-voltage power supply circuit stops supplying power to the second controller, and the feedback circuit stops working.
12. The method of claim 11, wherein the power supply drive further comprises a current boost circuit coupled to the second controller and the first sense resistor, respectively, the method further comprising:
when the second controller outputs a high level, the current of the high level is increased by the current increasing circuit and is output to the first controller.
13. The method of claim 11, wherein the first sense resistor is further coupled to the light source, the method further comprising:
in a normal working mode, the first controller detects the working state of the light source by detecting the voltage and/or current signals on the first detection resistor.
14. The method of claim 11, wherein the power supply drive further comprises a switching tube in parallel with the first sense resistor, the method further comprising:
in a normal working mode, the first controller directly sends a control signal to the switching tube or informs an external voltage control circuit to send a control signal to the switching tube to control the switching tube to be conducted;
and after the switching tube is conducted, the first detection resistor is short-circuited.
15. The method of claim 14, wherein the power supply drive further comprises a second sense resistor in series with the switching tube, and wherein a resistance value of the second sense resistor is less than a resistance value of the first sense resistor, the method further comprising:
the first detection resistor is short-circuited after the switching tube is conducted, and the second detection resistor is connected to the first controller;
in a normal working mode, the first controller detects the working state of the light source by detecting the voltage and/or current signals on the second detection resistor.
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| CN111385485A (en) * | 2020-03-26 | 2020-07-07 | 广东博智林机器人有限公司 | Image acquisition equipment and electronic device |
| CN113038653B (en) * | 2021-03-05 | 2022-06-14 | 无锡先导智能装备股份有限公司 | Driving circuit, method, power supply device and light emitting device |
| CN114205960B (en) * | 2022-02-21 | 2022-06-10 | 东莞锐视光电科技有限公司 | A method and system for constant current control of LED detection light source |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006351484A (en) * | 2005-06-20 | 2006-12-28 | Moritex Corp | Lighting device and lighting head used in the lighting device |
| CN102037278A (en) * | 2008-03-20 | 2011-04-27 | 美国航易明国际有限公司 | Illumination device and fixture |
| JP2012169086A (en) * | 2011-02-10 | 2012-09-06 | Mitsubishi Electric Corp | Light source module, lighting device, and illumination system |
| TW201438513A (en) * | 2013-03-27 | 2014-10-01 | Hep Tech Co Ltd | LED chip driving method applicable to specifications of same power but different voltages and currents |
| JP2015133229A (en) * | 2014-01-14 | 2015-07-23 | アール・ビー・コントロールズ株式会社 | LED lighting device |
| CN105764180A (en) * | 2016-03-02 | 2016-07-13 | 尹登庆 | Dynamic load adaptive PWM driver |
| CN105813268A (en) * | 2016-05-04 | 2016-07-27 | 杭州上达光电科技有限公司 | Light source system capable of automatically recognizing LED load light source |
| DE102016105513A1 (en) * | 2015-04-10 | 2016-10-13 | Panasonic Intellectual Property Management Co., Ltd. | Lighting circuit, luminaire and lighting system |
| CN106376142A (en) * | 2016-10-31 | 2017-02-01 | 恒亦明（重庆）科技有限公司 | Identity load and power output parameter self-adjusting system |
| CN206302597U (en) * | 2016-10-13 | 2017-07-04 | 重庆瑞升康博电气有限公司 | Power-adjustable Multifucntional LED power driver |
| CN107548206A (en) * | 2017-09-15 | 2018-01-05 | 佛山市华全电气照明有限公司 | By identifying that LED Vf values adjust the driving power circuit of output voltage |
| DE102017214608A1 (en) * | 2016-08-22 | 2018-02-22 | Tridonic Gmbh & Co Kg | Method and arrangement for operating a load, which includes at least one LED module |
| CN107851686A (en) * | 2015-07-08 | 2018-03-27 | Ccs株式会社 | Supply unit and the illuminating system for possessing supply unit |
| CN207427513U (en) * | 2017-09-11 | 2018-05-29 | 沃特威（广州）电子科技有限公司 | A kind of adaptive New LED driver |
| CN210609798U (en) * | 2019-07-05 | 2020-05-22 | 欧普照明股份有限公司 | Power supply driving equipment automatically matched with multi-specification light source load and lamp |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170318645A1 (en) * | 2011-11-21 | 2017-11-02 | Gregory S. Hasler | High efficiency light compatibility device |
| US9544970B2 (en) * | 2012-12-21 | 2017-01-10 | Tridonic Gmbh & Co Kg | Detection of an LED module |
| US9736909B2 (en) * | 2015-07-13 | 2017-08-15 | Eaton Corporation | Universal dimmer with auto load detection and related methods of operation |
| US10845397B2 (en) * | 2017-01-30 | 2020-11-24 | Wirepath Home Systems, Llc | Systems and methods for detecting load coupling and for detecting a load type |
-
2019
- 2019-07-05 CN CN201910605060.9A patent/CN110366291B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006351484A (en) * | 2005-06-20 | 2006-12-28 | Moritex Corp | Lighting device and lighting head used in the lighting device |
| CN102037278A (en) * | 2008-03-20 | 2011-04-27 | 美国航易明国际有限公司 | Illumination device and fixture |
| JP2012169086A (en) * | 2011-02-10 | 2012-09-06 | Mitsubishi Electric Corp | Light source module, lighting device, and illumination system |
| TW201438513A (en) * | 2013-03-27 | 2014-10-01 | Hep Tech Co Ltd | LED chip driving method applicable to specifications of same power but different voltages and currents |
| JP2015133229A (en) * | 2014-01-14 | 2015-07-23 | アール・ビー・コントロールズ株式会社 | LED lighting device |
| DE102016105513A1 (en) * | 2015-04-10 | 2016-10-13 | Panasonic Intellectual Property Management Co., Ltd. | Lighting circuit, luminaire and lighting system |
| CN107851686A (en) * | 2015-07-08 | 2018-03-27 | Ccs株式会社 | Supply unit and the illuminating system for possessing supply unit |
| CN105764180A (en) * | 2016-03-02 | 2016-07-13 | 尹登庆 | Dynamic load adaptive PWM driver |
| CN105813268A (en) * | 2016-05-04 | 2016-07-27 | 杭州上达光电科技有限公司 | Light source system capable of automatically recognizing LED load light source |
| DE102017214608A1 (en) * | 2016-08-22 | 2018-02-22 | Tridonic Gmbh & Co Kg | Method and arrangement for operating a load, which includes at least one LED module |
| CN206302597U (en) * | 2016-10-13 | 2017-07-04 | 重庆瑞升康博电气有限公司 | Power-adjustable Multifucntional LED power driver |
| CN106376142A (en) * | 2016-10-31 | 2017-02-01 | 恒亦明（重庆）科技有限公司 | Identity load and power output parameter self-adjusting system |
| CN207427513U (en) * | 2017-09-11 | 2018-05-29 | 沃特威（广州）电子科技有限公司 | A kind of adaptive New LED driver |
| CN107548206A (en) * | 2017-09-15 | 2018-01-05 | 佛山市华全电气照明有限公司 | By identifying that LED Vf values adjust the driving power circuit of output voltage |
| CN210609798U (en) * | 2019-07-05 | 2020-05-22 | 欧普照明股份有限公司 | Power supply driving equipment automatically matched with multi-specification light source load and lamp |
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| Publication number | Publication date |
|---|---|
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