CN116614916A - Intelligent lighting driving multi-signal detection circuit and device - Google Patents
Intelligent lighting driving multi-signal detection circuit and device Download PDFInfo
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 99
- 238000007493 shaping process Methods 0.000 claims abstract description 41
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- 238000012937 correction Methods 0.000 claims description 16
- 238000005286 illumination Methods 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 6
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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]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/32—Pulse-control circuits
- H05B45/325—Pulse-width modulation [PWM]
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/36—Circuits for reducing or suppressing harmonics, ripples or electromagnetic interferences [EMI]
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
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- 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
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- 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 invention discloses a smart lighting driving multi-signal detection circuit and a device, wherein the detection circuit comprises: the device comprises a shaping circuit, a signal conversion circuit and a control module; the intelligent lighting driving device comprises an input port, a rectifying and filtering circuit, a main power conversion module and an LED load which are connected in sequence; the input end of the shaping circuit is connected with the input port, the output end of the shaping circuit is connected with the input end of the signal conversion circuit, the output end of the signal conversion circuit is connected with the input end of the control module, and the output end of the control module is connected with the main power conversion module. The embodiment of the invention only adopts one set of detection circuit, can detect and distinguish three signals, has simple circuit, fewer devices and low cost. Moreover, the signals are switched, and the detection time sequence is accurate and definite.
Description
Technical Field
The invention relates to the technical field of signal detection, in particular to an intelligent lighting driving multi-signal detection circuit and device.
Background
The intelligent lighting application needs to output corresponding control signals according to the signals of the power input end, so that the required lighting effect is achieved. The input signals include three types: alternating current signal, direct current signal, turn-off signal. When the input voltage signal is alternating current, the power supply outputs current according to the normal dimming signal. When the input voltage signal is direct current, the power supply enters an emergency mode, so that emergency current is often required to be reduced for longer emergency time, and the power supply enters the emergency current mode. When no signal is input, the switch-off mode is entered, and corresponding switch-off operation is performed.
The traditional detection circuit adopts more devices, has complex circuit structure, for example, in the schemes disclosed in patent CN111817584A, patent CN 205691680U and patent CN201420779963.1, the whole detection system is too complex, a reference and special comparison circuit is needed, the devices are more, the debugging is complex, the cost is high, and the like, and the corresponding detection and processing of the turn-off signal are not performed.
Disclosure of Invention
The present invention provides an intelligent lighting driving multi-signal detection circuit and device to solve the above problems in the prior art.
The invention provides an intelligent lighting driving multi-signal detection circuit, which comprises: the device comprises a shaping circuit, a signal conversion circuit and a control module;
the intelligent lighting driving device comprises an input port, a rectifying and filtering circuit, a main power conversion module and an LED load which are connected in sequence;
the input end of the shaping circuit is connected with the input port, the output end of the shaping circuit is connected with the input end of the signal conversion circuit, the output end of the signal conversion circuit is connected with the input end of the control module, and the output end of the control module is connected with the main power conversion module.
Preferably, the rectifying and filtering module is connected with the main power conversion module and provides pulsating direct current voltage for the main power conversion module;
the shaping circuit and the signal conversion circuit perform signal processing on an input signal of the input port to form a corresponding detection signal, wherein the detection signal is used for distinguishing the type of the input signal; the detection signal is input to the control module, and the corresponding control signal is output through the control module;
the output end of the main power conversion module is connected with an LED load, and the LED load is correspondingly controlled according to the control signal of the control module.
Preferably, the input signal includes: alternating current signals, direct current signals and no signals;
when the input is an alternating current signal, the power supply for intelligent illumination enters an alternating current mode, and in the alternating current mode, current is output according to a normal dimming signal so that the LED load can work normally;
when the input signal is a direct current signal, the power supply for intelligent illumination further has an emergency mode, emergency current in the emergency mode is reduced, and current input to the LED load is reduced;
when the input signal is no signal, the power supply of the intelligent illumination is turned off, and the LED load is turned off in a slow turn-off or fast turn-off mode in the turn-off mode.
Preferably, the detection circuit further includes a storage module, and the storage module is connected with the control module, and is configured to store related data in the control module, where the related data includes: dimming scenario data, power address data.
Preferably, the rectifying and filtering module is composed of a rectifying bridge BD1 and a capacitor C1; the main power conversion module includes: the active power correction circuit improves the action of driving high power factors, and the flyback circuit has the functions of energy conversion and dimming.
Preferably, the shaping circuit includes: diodes D11, D12; the anodes of the diodes D11 and D12 are respectively connected with two ends of the input port;
the signal conversion circuit includes: resistors R31, R32, R43, R45, R47, and transistor Q3;
the cathodes of the diodes D11 and D12 are connected with a resistor R31, the resistors R32 and R43 are connected with the resistor R31 in series, the other end of the resistor R43 is connected with a resistor R47 and the base electrode of the triode Q3, the emitter electrode of the triode Q3 is connected with the other end of the resistor R47, the collector electrode of the triode Q3 is connected with a resistor R45, and the other end of the resistor R45 is connected with a pin of a control chip of the signal conversion circuit.
Preferably, when the input signal is a direct current signal, the signal conversion circuit outputs a low level, and the PWM port of the control module outputs a signal with a 15% brightness duty ratio; when the input signal is an alternating current signal, the signal conversion circuit outputs a square wave signal, the PWM port of the control module outputs a signal with 100% duty ratio to finish full load output of the load, or outputs corresponding load power according to the dimming DIM port to control the state of the LED load; when the input signal is no signal, the signal conversion circuit outputs a high level, the control module stores the power supply state, and in DALI dimming application, the distributed address and scene setting are stored, the PWM1 port outputs a high level, and the active power correction circuit and the flyback circuit are rapidly closed.
Preferably, the shaping circuit further includes: a voltage stabilizing tube ZD1;
the negative electrode of the voltage stabilizing tube ZD1 is connected with a resistor R43 and a resistor R47; the positive pole of the voltage stabilizing tube ZD1 is connected with the base electrode of the triode Q3.
Preferably, the active power correction circuit is controlled in an external start-up or self-start mode.
The invention also provides an intelligent lighting driving multi-signal detection device, which comprises: the intelligent lighting drives the multi-signal detection circuit.
Compared with the prior art, the invention has the following advantages:
the invention provides a smart lighting driving multi-signal detection circuit and a device, wherein the detection circuit comprises: the device comprises a shaping circuit, a signal conversion circuit and a control module; the intelligent lighting driving device comprises an input port, a rectifying and filtering circuit, a main power conversion module and an LED load which are connected in sequence; the input end of the shaping circuit is connected with the input port, the output end of the shaping circuit is connected with the input end of the signal conversion circuit, the output end of the signal conversion circuit is connected with the input end of the control module, and the output end of the control module is connected with the main power conversion module. The embodiment of the invention only adopts one set of detection circuit, can detect and distinguish three signals, has simple circuit, fewer devices and low cost. Moreover, the signals are switched, and the detection time sequence is accurate and definite.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
fig. 1 is a schematic diagram of a structure of a smart lighting driving multi-signal detection circuit according to an embodiment of the present invention;
FIG. 2 is a circuit diagram of a smart lighting driving multi-signal detection circuit according to an embodiment of the present invention;
FIG. 3 is a waveform diagram of three input signals according to an embodiment of the present invention;
fig. 4 is a waveform diagram of detection signals corresponding to three input signals after the three input signals pass through the signal conversion circuit in the embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
The embodiment of the invention provides an intelligent lighting driving multi-signal detection circuit, referring to fig. 1 to 4, the detection circuit comprises: the device comprises a shaping circuit, a signal conversion circuit and a control module;
the intelligent lighting driving device comprises an input port, a rectifying and filtering circuit, a main power conversion module and an LED load which are connected in sequence;
the input end of the shaping circuit is connected with the input port, the output end of the shaping circuit is connected with the input end of the signal conversion circuit, the output end of the signal conversion circuit is connected with the input end of the control module, and the output end of the control module is connected with the main power conversion module.
The working principle of the technical scheme is as follows: the scheme adopted by the embodiment is that the detection circuit comprises: the device comprises a shaping circuit, a signal conversion circuit and a control module; the intelligent lighting driving device comprises an input port, a rectifying and filtering circuit, a main power conversion module and an LED load which are connected in sequence; the input end of the shaping circuit is connected with the input port, the output end of the shaping circuit is connected with the input end of the signal conversion circuit, the output end of the signal conversion circuit is connected with the input end of the control module, and the output end of the control module is connected with the main power conversion module.
The beneficial effects of the technical scheme are as follows: the scheme detection circuit provided by the embodiment comprises: the device comprises a shaping circuit, a signal conversion circuit and a control module; the intelligent lighting driving device comprises an input port, a rectifying and filtering circuit, a main power conversion module and an LED load which are connected in sequence; the input end of the shaping circuit is connected with the input port, the output end of the shaping circuit is connected with the input end of the signal conversion circuit, the output end of the signal conversion circuit is connected with the input end of the control module, and the output end of the control module is connected with the main power conversion module. The embodiment of the invention only adopts one set of detection circuit, can detect and distinguish three signals, has simple circuit, fewer devices and low cost. Moreover, the signals are switched, and the detection time sequence is accurate and definite.
In addition, when the input voltage is direct current, the main power enters an emergency state according to the instruction of the control module, and at the moment, corresponding emergency current can be output according to the requirement to drive the LED load, and often the emergency current is smaller than the current value in the alternating current mode; when the input voltage is closed (no AC power supply or DC power supply), the system enters a shutdown mode, corresponding shutdown operations (such as slow shutdown or quick shutdown) can be performed according to the needs, afterglow is prevented, and relevant data storage (such as dimming scenes, power addresses and the like) can be performed; when the input signal is alternating current, the system enters an alternating current mode, and the controller can send out corresponding instructions according to the requirements, so that the LED load outputs corresponding light effects, such as starting soft start.
In another embodiment, the rectifying and filtering module is connected with the main power conversion module and provides pulsating direct current voltage for the main power conversion module;
the shaping circuit and the signal conversion circuit perform signal processing on an input signal of the input port to form a corresponding detection signal, wherein the detection signal is used for distinguishing the type of the input signal; the detection signal is input to the control module, and the corresponding control signal is output through the control module;
the output end of the main power conversion module is connected with an LED load, and the LED load is correspondingly controlled according to the control signal of the control module.
The working principle of the technical scheme is as follows: the scheme adopted by the embodiment is that a rectifying and filtering module is connected with a main power conversion module to provide pulsating direct current voltage for the main power conversion module; the shaping circuit and the signal conversion circuit perform signal processing on an input signal of the input port to form a corresponding detection signal, wherein the detection signal is used for distinguishing the type of the input signal; the detection signal is input to the control module, and the corresponding control signal is output through the control module; the output end of the main power conversion module is connected with an LED load, and the LED load is correspondingly controlled according to the control signal of the control module.
The beneficial effects of the technical scheme are as follows: the scheme provided by the embodiment is adopted to rectify and filter the module and connect with the main power conversion module, so as to provide pulsating direct current voltage for the main power conversion module; the shaping circuit and the signal conversion circuit perform signal processing on an input signal of the input port to form a corresponding detection signal, wherein the detection signal is used for distinguishing the type of the input signal; the detection signal is input to the control module, and the corresponding control signal is output through the control module; the output end of the main power conversion module is connected with an LED load, and the LED load is correspondingly controlled according to the control signal of the control module.
As shown in fig. 3 and fig. 4, the control module can distinguish the three input signals, and generate corresponding different detection signals according to waveforms of different input signals, so that the input signals can be distinguished, and the control module can control the main power conversion module according to the different input signals, so as to control the LED load. The scheme provided by the embodiment has a simple circuit structure, can detect all three situations of an input signal, and executes corresponding operation according to a detection result.
In another embodiment, the input signal comprises: alternating current signals, direct current signals and no signals;
when the input is an alternating current signal, the power supply for intelligent illumination enters an alternating current mode, and in the alternating current mode, current is output according to a normal dimming signal so that the LED load can work normally;
when the input signal is a direct current signal, the power supply for intelligent illumination further has an emergency mode, emergency current in the emergency mode is reduced, and current input to the LED load is reduced;
when the input signal is no signal, the power supply of the intelligent illumination is turned off, and the LED load is turned off in a slow turn-off or fast turn-off mode in the turn-off mode.
The working principle of the technical scheme is as follows: the scheme adopted by the embodiment is that the input signal comprises: alternating current signals, direct current signals and no signals; when the input is an alternating current signal, the power supply for intelligent illumination enters an alternating current mode, and in the alternating current mode, current is output according to a normal dimming signal so that the LED load can work normally; when the input signal is a direct current signal, the power supply for intelligent illumination further has an emergency mode, emergency current in the emergency mode is reduced, and current input to the LED load is reduced; when the input signal is no signal, the power supply of the intelligent illumination is turned off, and the LED load is turned off in a slow turn-off or fast turn-off mode in the turn-off mode.
The beneficial effects of the technical scheme are as follows: when the scheme provided by the embodiment is adopted and the input voltage is direct current, the main power conversion module enters an emergency state according to the instruction of the control module, and at the moment, corresponding emergency current can be output according to the requirement to drive the LED load, and often the emergency current is smaller than the current value in the alternating current mode; when the input voltage is closed (no AC power supply or DC power supply exists), the system enters a closing mode, and corresponding closing operation (such as slow closing or quick closing) can be performed according to the requirement at the moment, so that afterglow is prevented.
Therefore, the scheme provided by the embodiment not only can detect direct current signals and alternating current signals, but also can enable the power supply of intelligent illumination to be turned off when no signal exists in the input port, and can conduct the turn-off operation of the LED load in different modes, and can be turned off rapidly or turned off slowly, so that different requirements are met.
In another embodiment, the detection circuit further includes a storage module, and the storage module is connected to the control module, and is configured to store related data in the control module, where the related data includes: dimming scenario data, power address data.
The working principle of the technical scheme is as follows: the scheme adopted by the embodiment is that the detection circuit further comprises a storage module, wherein the storage module is connected with the control module and used for storing related data in the control module, and the related data comprises: dimming scenario data, power address data.
The beneficial effects of the technical scheme are as follows: the scheme detection circuit provided by the embodiment further comprises a storage module, wherein the storage module is connected with the control module and is used for storing related data in the control module, and the related data comprises: dimming scenario data, power address data. And storing and recording different control data or operation data.
In another embodiment, the rectifying and filtering module is composed of a rectifying bridge BD1 and a capacitor C1; the main power conversion module includes: the active power correction circuit improves the action of driving high power factors, and the flyback circuit has the functions of energy conversion and dimming.
The working principle of the technical scheme is as follows: the scheme adopted by the embodiment is as follows: referring to fig. 2, an input signal is input through a port CON1, and may be an ac signal or a dc signal; the signal input port is connected with a rectifying and filtering module, and the rectifying and filtering module consists of a rectifying bridge BD1 and a capacitor C1; the main power conversion module consists of APFC (active power correction circuit) and flyback circuit, wherein the active power correction circuit improves the action of driving high power factors, the control chip is OB3674, the flyback module has the functions of energy conversion and dimming, and the control chip is 3177DE. The regulation and control of the LED load can be realized through the main power conversion module.
In another embodiment, referring to fig. 2, the shaping circuit includes: diodes D11, D12; the anodes of the diodes D11 and D12 are respectively connected with two ends of the input port;
the signal conversion circuit includes: resistors R31, R32, R43, R45, R47, and transistor Q3;
the cathodes of the diodes D11 and D12 are connected with a resistor R31, the resistors R32 and R43 are connected with the resistor R31 in series, the other end of the resistor R43 is connected with a resistor R47 and the base electrode of the triode Q3, the emitter electrode of the triode Q3 is connected with the other end of the resistor R47, the collector electrode of the triode Q3 is connected with a resistor R45, and the other end of the resistor R45 is connected with a pin of a control chip of the signal conversion circuit.
The working principle of the technical scheme is as follows: the scheme adopted by the embodiment is that the shaping circuit comprises: diodes D11, D12; the anodes of the diodes D11 and D12 are respectively connected with two ends of the input port; the signal conversion circuit includes: resistors R31, R32, R43, R45, R47, and transistor Q3; the cathodes of the diodes D11 and D12 are connected with a resistor R31, the resistors R32 and R43 are connected with the resistor R31 in series, the other end of the resistor R43 is connected with a resistor R47 and the base electrode of the triode Q3, the emitter electrode of the triode Q3 is connected with the other end of the resistor R47, the collector electrode of the triode Q3 is connected with a resistor R45, and the other end of the resistor R45 is connected with a pin of a control chip of the signal conversion circuit.
The beneficial effects of the technical scheme are as follows: the proposal provided by the embodiment is adopted to form a shaping circuit by diodes D11 and D12; the resistors R31, R32, R43, R45 and R47 and the triode Q3 form a signal conversion circuit; after three signals pass through the signal conversion circuit, corresponding different signals are output, the control module is composed of a single chip microcomputer, such as LKS033, and different instructions are sent out to control the main power conversion circuit according to different signals given by the signal conversion circuit.
In another embodiment, when the input signal is a dc signal, the signal conversion circuit outputs a low level, and the PWM port of the control module outputs a signal with a 15% brightness duty cycle; when the input signal is an alternating current signal, the signal conversion circuit outputs a square wave signal, the PWM port of the control module outputs a signal with 100% duty ratio to finish full load output of the load, or outputs corresponding load power according to the dimming DIM port to control the state of the LED load; when the input signal is no signal, the signal conversion circuit outputs a high level, the control module stores the power supply state, and in DALI dimming application, the distributed address and scene setting are stored, the PWM1 port outputs a high level, and the active power correction circuit and the flyback circuit are rapidly closed.
The working principle of the technical scheme is as follows: the scheme adopted by the embodiment is that when the input signal is a direct current signal, the signal conversion circuit outputs a low level, and the PWM port of the control module outputs a signal with 15% brightness duty ratio; when the input signal is an alternating current signal, the signal conversion circuit outputs a square wave signal, the PWM port of the control module outputs a signal with 100% duty ratio to finish full load output of the load, or outputs corresponding load power according to the dimming DIM port to control the state of the LED load; when the input signal is no signal, the signal conversion circuit outputs a high level, the control module stores the power supply state, and in DALI dimming application, the distributed address and scene setting are stored, the PWM1 port outputs a high level, and the active power correction circuit and the flyback circuit are rapidly closed.
The beneficial effects of the technical scheme are as follows: when the input is direct current, the signal conversion circuit outputs low level, the control module PWM port outputs 15% brightness duty ratio, and the European emergency EL value demand is satisfied; when the input is alternating current, the signal conversion circuit outputs a square wave signal, the PWM port of the control module outputs 100% duty ratio, the load is fully loaded and output, or corresponding load power is output according to the dimming DIM port (optional); when no input signal (off), the signal conversion circuit outputs a high level, the control module saves the power state, such as saving the allocated address and scene setting in DALI dimming application, and outputs PWM1 to output a high level, and rapidly turns off APFC and flyback. DALI dimming is a typical digitally controlled dimming approach and has become the dominant standard for digital dimming in europe. DALI is a dedicated lighting control protocol, and DALI systems are suitable for scene control, light source failure status feedback. The DALI system gives new connotation to luminaires, each luminaire having an independent address, the DALI system has no requirements for the light source and luminaire, but requires that the ballast, driver and other components comply with the DALI standard, the addresses of the luminaires being represented by them.
In another embodiment, referring to fig. 2, the shaping circuit further includes: a voltage stabilizing tube ZD1;
the negative electrode of the voltage stabilizing tube ZD1 is connected with a resistor R43 and a resistor R47; the positive pole of the voltage stabilizing tube ZD1 is connected with the base electrode of the triode Q3.
The working principle of the technical scheme is as follows: the scheme adopted by the embodiment is that the shaping circuit further comprises: a voltage stabilizing tube ZD1; the negative electrode of the voltage stabilizing tube ZD1 is connected with a resistor R43 and a resistor R47; the positive pole of the voltage stabilizing tube ZD1 is connected with the base electrode of the triode Q3.
The beneficial effects of the technical scheme are as follows: the shaping circuit adopting the scheme provided by the embodiment further comprises: a voltage stabilizing tube ZD1; the negative electrode of the voltage stabilizing tube ZD1 is connected with a resistor R43 and a resistor R47; the positive pole of the voltage stabilizing tube ZD1 is connected with the base electrode of the triode Q3. Through adding the voltage stabilizing tube ZD1 in the shaping circuit, the temperature drift of the voltage stabilizing tube is smaller than that of the triode, the reliability of the shaping circuit is higher, and the design is simpler.
In another embodiment, the active power correction circuit is controlled in an external start-up or self-start manner.
The working principle of the technical scheme is as follows: the scheme adopted by the embodiment is that the active power correction circuit is controlled in an external starting or self-starting mode.
The beneficial effects of the technical scheme are as follows: the active power correction circuit is controlled in an external starting or self-starting mode by adopting the scheme provided by the embodiment. The power factor correction chip, the active power correction circuit may adopt an external start chip OB3674, or the external start chip OB3674 is replaced by an auto-start chip BP2636CA.
In another embodiment, the present invention further provides a smart lighting driving multi-signal detection device, which includes a smart lighting driving multi-signal detection circuit. The detection circuit includes: the device comprises a shaping circuit, a signal conversion circuit and a control module; the intelligent lighting driving device comprises an input port, a rectifying and filtering circuit, a main power conversion module and an LED load which are connected in sequence; the input end of the shaping circuit is connected with the input port, the output end of the shaping circuit is connected with the input end of the signal conversion circuit, the output end of the signal conversion circuit is connected with the input end of the control module, and the output end of the control module is connected with the main power conversion module. The embodiment of the invention only adopts one set of detection circuit, can detect and distinguish three signals, has simple circuit, fewer devices and low cost. Moreover, the signals are switched, and the detection time sequence is accurate and definite.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. Wisdom illumination drive multi-signal detection circuit, its characterized in that includes: the device comprises a shaping circuit, a signal conversion circuit and a control module;
the intelligent lighting driving device comprises an input port, a rectifying and filtering circuit, a main power conversion module and an LED load which are connected in sequence;
the input end of the shaping circuit is connected with the input port, the output end of the shaping circuit is connected with the input end of the signal conversion circuit, the output end of the signal conversion circuit is connected with the input end of the control module, and the output end of the control module is connected with the main power conversion module.
2. The intelligent lighting drive multi-signal detection circuit of claim 1, wherein the rectifying and filtering module is connected to the main power conversion module to provide a pulsating dc voltage to the main power conversion module;
the shaping circuit and the signal conversion circuit perform signal processing on an input signal of the input port to form a corresponding detection signal, wherein the detection signal is used for distinguishing the type of the input signal; the detection signal is input to the control module, and the corresponding control signal is output through the control module;
the output end of the main power conversion module is connected with an LED load, and the LED load is correspondingly controlled according to the control signal of the control module.
3. The intelligent lighting drive multi-signal detection circuit of claim 2, wherein the input signal comprises: alternating current signals, direct current signals and no signals;
when the input is an alternating current signal, the power supply for intelligent illumination enters an alternating current mode, and in the alternating current mode, current is output according to a normal dimming signal so that the LED load can work normally;
when the input signal is a direct current signal, the power supply for intelligent illumination further has an emergency mode, emergency current in the emergency mode is reduced, and current input to the LED load is reduced;
when the input signal is no signal, the power supply of the intelligent illumination is turned off, and the LED load is turned off in a slow turn-off or fast turn-off mode in the turn-off mode.
4. The intelligent lighting drive multi-signal detection circuit of claim 1, wherein the detection circuit further comprises a memory module coupled to the control module for storing relevant data in the control module, the relevant data comprising: dimming scenario data, power address data.
5. The intelligent lighting driving multi-signal detection circuit according to claim 1, wherein the rectifying and filtering module is composed of a rectifying bridge BD1 and a capacitor C1; the main power conversion module includes: the active power correction circuit improves the action of driving high power factors, and the flyback circuit has the functions of energy conversion and dimming.
6. The intelligent lighting drive multi-signal detection circuit of claim 1, wherein the shaping circuit comprises: diodes D11, D12; the anodes of the diodes D11 and D12 are respectively connected with two ends of the input port;
the signal conversion circuit includes: resistors R31, R32, R43, R45, R47, and transistor Q3;
the cathodes of the diodes D11 and D12 are connected with a resistor R31, the resistors R32 and R43 are connected with the resistor R31 in series, the other end of the resistor R43 is connected with a resistor R47 and the base electrode of the triode Q3, the emitter electrode of the triode Q3 is connected with the other end of the resistor R47, the collector electrode of the triode Q3 is connected with a resistor R45, and the other end of the resistor R45 is connected with a pin of a control chip of the signal conversion circuit.
7. The intelligent lighting driving multi-signal detection circuit according to claim 1, wherein when the input signal is a dc signal, the signal conversion circuit outputs a low level, and the PWM port of the control module outputs a signal with a 15% brightness duty ratio; when the input signal is an alternating current signal, the signal conversion circuit outputs a square wave signal, the PWM port of the control module outputs a signal with 100% duty ratio to finish full load output of the load, or outputs corresponding load power according to the dimming DIM port to control the state of the LED load; when the input signal is no signal, the signal conversion circuit outputs a high level, the control module stores the power supply state, and in DALI dimming application, the distributed address and scene setting are stored, the PWM1 port outputs a high level, and the active power correction circuit and the flyback circuit are rapidly closed.
8. The intelligent lighting drive multi-signal detection circuit of claim 6, wherein the shaping circuit further comprises: a voltage stabilizing tube ZD1;
the negative electrode of the voltage stabilizing tube ZD1 is connected with a resistor R43 and a resistor R47; the positive pole of the voltage stabilizing tube ZD1 is connected with the base electrode of the triode Q3.
9. The intelligent lighting drive multi-signal detection circuit of claim 5, wherein the active power correction circuit is controlled by external actuation or self-actuation.
10. Wisdom illumination drive multi-signal detection device, its characterized in that includes: the intelligent lighting drive multi-signal detection circuit of any one of claims 1-9.
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| CN116614916B (en) | 2023-11-03 |
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