CN110446295B - Remote-controlled dimmer circuit - Google Patents
Remote-controlled dimmer circuit Download PDFInfo
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- CN110446295B CN110446295B CN201910582886.8A CN201910582886A CN110446295B CN 110446295 B CN110446295 B CN 110446295B CN 201910582886 A CN201910582886 A CN 201910582886A CN 110446295 B CN110446295 B CN 110446295B
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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
- H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
- H05B39/04—Controlling
- H05B39/041—Controlling the light-intensity of the source
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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
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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
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Abstract
The invention discloses a remote-controlled dimmer circuit, which comprises a zero-voltage detection circuit, a rectification circuit, an energy-storage voltage-stabilizing circuit, an electronic switch circuit, a wireless communication module and a signal processing control circuit, utilizes the characteristic that the current commonly used dimmable LED lamp is different from the non-dimmable LED lamp, thereby being applicable to both the dimmable LED lamp and the dimmable incandescent lamp, determines the voltage value of the mains supply alternating current through the cooperation of the zero-voltage detection circuit and the signal processing control circuit, the energy-storage voltage-stabilizing circuit obtains the working electric energy required by the dimmer circuit in the time interval with smaller instantaneous voltage value of the mains supply alternating current, and the signal processing control circuit adjusts the effective voltage input into the dimmable lamp through setting the control period of the signal processing control circuit so as to adjust the brightness of the dimmable lamp, and has the advantages of lower circuit cost, the remote control function of the dimmer is realized.
Description
Technical Field
The present invention relates to a dimmer circuit, and more particularly, to a remote-controllable dimmer circuit.
Background
In the period of common use of incandescent lamps, it is a common application to use a dimmer to dim the incandescent lamp. The light dimmer is operated, so that the lamp can be turned on, turned off and adjusted in brightness, the requirements of different users on different brightness can be met, and the aim of saving energy can be fulfilled.
The dimmer has an input and an output, and the incandescent lamp has a live input and a neutral input as a dimmable lamp. In practical application, the input end of the light modulator is connected with the live wire of the mains supply, the output end of the light modulator is connected with the live wire input end of the incandescent lamp, and the zero line input end of the incandescent lamp is connected with the zero line of the mains supply. With the widespread use of LED lamps, another dimmable lamp, i.e., dimmable LED lamp, should be operated in order to adapt to the original incandescent lamp and the connection mode of the power line of the conventional dimmer. Because the dimmable LED lamp can be directly used for replacing an incandescent lamp, the dimmable LED lamp has been widely applied. The dimmable LED lamp is matched with an original dimmer matched with an incandescent lamp to work, and is provided with a working circuit matched with the dimmer, and the working circuit is characterized in that: when the input voltage of the dimmable LED lamp is lower than a threshold value set in the dimmable LED lamp, the two ends of the dimmable LED lamp can be conducted in a small current. The schematic diagram of the connection of the dimmer to the dimmable lamp is shown in fig. 1.
The original dimmer that was fitted with the incandescent lamp required manual operation and was inconvenient to use. In recent years, a remote-controllable dimmer appears in the market, and a user can remotely operate the remote-controllable dimmer through a remote controller to adjust the brightness of a dimmable lamp (a dimmable LED lamp or an incandescent lamp), so that the remote-controllable dimmer is more convenient to use.
However, a wireless communication module for performing wireless communication with a remote controller is disposed inside an existing remote-controllable light modulator, and the wireless communication module can be guaranteed to be in a working state only by supplying power uninterruptedly.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a remote-controllable dimmer circuit which can control a dimmable LED lamp on the premise of lower cost by utilizing the characteristics of the existing dimmable LED lamp without changing the existing power line wiring structure.
The technical scheme adopted by the invention for solving the technical problems is as follows: a remote-control dimmer circuit is provided with an input end for connecting a live wire of a mains supply and an output end for connecting the live wire input end of a dimmable lamp, and comprises a zero voltage detection circuit, a rectifying circuit, an energy storage voltage stabilizing circuit, an electronic switch circuit, a wireless communication module and a signal processing control circuit; the energy storage voltage stabilizing circuit has a current limiting function for limiting the maximum input current and an electric energy storage function, the current limiting function is used for matching a dimmable LED lamp circuit connected with the dimmer circuit, and the electric energy storage function is used for providing normal electric energy for the dimmer circuit within a certain time without electric energy input;
the electronic switch circuit and the energy storage voltage stabilizing circuit are respectively connected with the rectifying circuit, the energy storage voltage stabilizing circuit is respectively connected with the electronic switch circuit, the signal processing control circuit and the wireless communication module, the wireless communication module is used for communicating with a remote controller to obtain a control signal and transmitting the control signal to the signal processing control circuit, the electronic switch circuit enters an open circuit state or a short circuit state under the control of the signal processing control circuit, when the electronic switch circuit is in the open circuit state, the energy storage voltage stabilizing circuit converts the direct current voltage output by the rectifying circuit into two direct current voltages with different sizes, wherein one direct current voltage supplies power to the electronic switch circuit, and the other direct current voltage supplies power to the wireless communication module and the signal processing control circuit, when the electronic switch circuit is short-circuited, the input end and the output end of the dimmer circuit are short-circuited through the rectifying circuit, no current flows into the energy storage voltage stabilizing circuit at the moment, and the electric energy required by the dimmer circuit is provided by the electric energy stored by the energy storage voltage stabilizing circuit when the electronic switch circuit is open-circuited;
marking the period of the mains supply alternating current as 2T, wherein the period of a half sine wave of the mains supply alternating current is T, the control period of the signal processing control circuit is T, and each control period of the signal processing control circuit is divided into three intervals: 0-T1, T1-T2 and T2-T, wherein T1 is a fixed value, the value of T2 is greater than or equal to T1 and smaller than T, T2 has an initial default value when the dimmer circuit is used for the first time, then the dimmer circuit is updated by the signal processing control circuit according to the control signal received by the wireless communication module, and a comparison table of the value of T2 and the control signal sent by the remote controller is prestored in the signal processing control circuit;
when the dimmer circuit is powered on and started, the signal processing control circuit firstly controls the electronic switch circuit to enter an initial state, the initial state of the electronic switch circuit is an open-circuit state, the signal processing control circuit acquires a judgment signal output by the zero voltage detection circuit in real time, when the instantaneous voltage of the commercial power alternating current corresponding to the judgment signal output by the zero voltage detection circuit acquired at a certain moment is zero, the initial state of the electronic switch circuit is ended, and the signal processing control circuit starts to time and enter a control cycle by taking the moment as a timing 0 point; the signal processing control circuit controls the electronic switch circuit to keep an open state in a section from 0 to T1 of the control period, controls the electronic switch circuit to keep a short-circuit state in a section from T1 to T2 of the control period, and controls the electronic switch circuit to keep an open state again in a section from T2 to T of the control period; in any control period, the wireless communication module can receive a control signal sent by a remote controller, the signal processing control circuit analyzes the control signal to obtain t2 data corresponding to the control signal, the obtained t2 data is adopted to update t2 of the next control period, and the next control period is divided into three intervals according to the updated t2 to control the short circuit state and the open circuit state of the electronic switching circuit; in the interval from t1 to t2, the signal processing control circuit does not acquire the judgment signal output by the zero voltage detection circuit any more; starting from the time T2, the signal processing control circuit controls the electronic switch circuit to enter an open-circuit state, the signal processing control circuit acquires the determination signal output by the zero voltage detection circuit again in real time, the commercial power alternating-current voltage corresponding to the determination signal output by the zero voltage detection circuit acquired by the signal processing control circuit at the time T is zero, the control period is ended at this time, and the signal processing control circuit enters the next control period and repeats.
The zero voltage detection circuit is provided with a first input end, a second input end, an output end and a grounding end, the rectification circuit is provided with a live wire input end, a zero wire input end, an output end and a grounding end, the energy storage voltage stabilizing circuit is provided with an input end, a first output end, a second output end and a grounding end, the electronic switch circuit is provided with an anode, a cathode, a power end and a control end, the wireless communication module is provided with an anode, a cathode and an output end, the signal processing control circuit is provided with an anode, a cathode, a voltage signal input end, a wireless signal input end and an output end, the live wire input end of the rectification circuit is connected with the first input end of the zero voltage detection circuit, the connecting end of the live wire input end of the rectification circuit is the input end of the light modulator circuit, the zero wire input end of the rectification circuit is connected with the second input end of the zero voltage detection, the output end of the rectifying circuit is connected with the anode of the electronic switch circuit and the input end of the energy storage and voltage stabilizing circuit, the first output end of the energy storage and voltage stabilizing circuit is connected with the power end of the electronic switch circuit, the second output end of the energy storage and voltage stabilizing circuit is respectively connected with the anode of the wireless communication module and the anode of the signal processing control circuit, the output end of the zero voltage detection circuit is connected with the voltage signal input end of the signal processing control circuit, the output end of the wireless communication module is connected with the wireless signal input end of the signal processing control circuit, the output end of the signal processing control circuit is connected with the control end of the electronic switch circuit, the grounding end of the rectifying circuit, the cathode of the electronic switch circuit, the grounding end of the energy storage and voltage stabilizing circuit, the ground end of the signal processing control circuit and the ground end of the electronic switch circuit, And the negative electrode of the signal processing control circuit is connected with the grounding end of the wireless communication module.
The zero voltage detection circuit comprises a first resistor, a second resistor, a third resistor, a first capacitor and a first diode, wherein the first diode is a voltage stabilizing diode, one end of the first resistor is a first input end of the zero voltage detection circuit, one end of the second resistor is a second input end of the zero voltage detection circuit, the other end of the first resistor, the other end of the second resistor, one end of the third resistor, one end of the first capacitor and the negative electrode of the first diode are connected, the connecting end of the first capacitor is the output end of the zero voltage detection circuit, and the other end of the third resistor, the other end of the first capacitor and the positive electrode of the first diode are connected, and the connecting end of the third resistor is the grounding end of the zero voltage detection circuit.
The electronic switch circuit comprises a first NMOS tube, a second NMOS tube, a fourth resistor and a second capacitor, wherein the drain electrode of the first NMOS tube is the anode of the electronic switch circuit, the grid electrode of the first NMOS tube, one end of the fourth resistor and one end of the second capacitor are connected with the drain electrode of the second NMOS tube, the other end of the fourth resistor is the power supply end of the electronic switch circuit, the grid electrode of the second NMOS tube is the control end of the electronic switch circuit, the source electrode of the first NMOS tube, the source electrode of the second NMOS tube and the other end of the second capacitor are connected, and the connecting end of the first NMOS tube, the source electrode of the second NMOS tube and the other end of the second capacitor is the cathode of the electronic switch circuit.
The energy storage voltage stabilizing circuit comprises a first chip, a second chip, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor R9, a third capacitor, a fourth capacitor, a second diode, a third diode and a first triode, wherein the model of the first chip is SM2083, the second chip is a three-terminal linear voltage stabilizing circuit and is provided with an input pin, an output pin and a grounding pin, the third capacitor is an electrolytic capacitor, the second diode is a rectifier diode, the third diode is a voltage stabilizing diode, the anode of the second diode is connected with one end of the fifth resistor, the connecting end of the second diode is the input end of the energy storage voltage stabilizing circuit, the cathode of the second diode, the 8 th pin of the first chip is connected with one end of the seventh resistor, and the other end of the seventh resistor is connected with the 1 st pin of the first chip, the other end of the fifth resistor, one end of the sixth resistor, the anode of the third diode and the base of the first triode, the collector of the first triode and one end of the eighth resistor are connected, the other end of the eighth resistor is connected with the 4 th pin of the first chip, the 5 th pin of the first chip is connected with one end of the ninth resistor R9, the 3 rd pin of the first chip, the cathode of the third diode, the other end of the ninth resistor R9, the anode of the third capacitor and the input pin of the second chip are connected, and the connection end of the other end of the first chip, the cathode of the third diode, the anode of the ninth resistor R9 and the input pin of the second chip is the first output end of the energy storage and voltage regulation circuit, the output pin of the second chip and one end of the fourth capacitor are connected, and the connection end of the second output end of the energy storage and voltage regulation circuit, the other end of the sixth resistor, the anode of the third diode and the base of the first triode are connected, the collector, The emitting electrode of the first triode, the negative electrode of the third capacitor and the other end of the fourth capacitor are connected with the grounding pin of the second chip, and the connecting end of the fourth capacitor is the grounding end of the energy storage voltage stabilizing circuit. The circuit can limit the maximum input current and is convenient to match with a connected dimmable LED lamp circuit.
Rectifier circuit adopt full-bridge rectifier bridge to pile up the realization, full-bridge rectifier bridge pile's the 1 st foot do rectifier circuit's live wire input end, full-bridge rectifier bridge pile's the 3 rd foot do rectifier circuit's zero line input end, full-bridge rectifier bridge pile's the 2 nd foot do rectifier circuit's output, full-bridge rectifier bridge pile's the 4 th foot do rectifier current's earthing terminal.
The dimmer circuit further comprises a key input circuit, the key input circuit is connected with the signal processing control circuit, and the key input circuit is used for a user to manually input dimming control signals.
Compared with the prior art, the invention has the advantages that the dimmer circuit is composed of the zero voltage detection circuit, the rectification circuit, the energy storage voltage stabilizing circuit, the electronic switch circuit, the wireless communication module and the signal processing control circuit, the dimmer circuit utilizes the characteristic that the dimming LED lamp which is commonly used at present is different from the LED lamp which can not be dimmed, namely, the characteristic that the input end and the output end of the dimming LED lamp are in short circuit conduction when small current is input, thereby being suitable for the dimming LED lamp and the incandescent lamp which can be dimmed, the voltage value of commercial power is determined by the cooperation of the zero voltage detection circuit and the signal processing control circuit, the energy storage voltage stabilizing circuit obtains the working electric energy required by the dimmer circuit when the instantaneous voltage value of the commercial power is smaller, and the signal processing control circuit realizes the control of the traditional dimmer on the commercial power alternating voltage by setting the control period of the signal processing control circuit when the instantaneous voltage of the commercial power is higher The system mode is used for adjusting the effective voltage of an input adjustable lamp (an LED lamp or an incandescent lamp with adjustable light), thereby adjusting the brightness of the adjustable lamp and realizing the remote control function of the dimmer with lower circuit cost.
Drawings
FIG. 1 is a schematic diagram of a conventional dimmer and a dimmable lamp;
fig. 2 is a block diagram of a remote controllable dimmer circuit according to a first embodiment of the present invention;
fig. 3 is a block diagram of a remote controllable dimmer circuit according to a second embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a remote-controllable dimmer circuit according to a first embodiment and a second embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The first embodiment is as follows: as shown in fig. 2, a remote-controllable dimmer circuit has an input terminal for connecting to a live wire of a commercial power and an output terminal for connecting to a live wire input terminal of a dimmable lamp, and includes a zero-voltage detection circuit, a rectification circuit, an energy-storage voltage-stabilizing circuit, an electronic switching circuit, a wireless communication module, and a signal processing control circuit; the energy storage and voltage stabilization circuit has a current limiting function for limiting the maximum input current and an electric energy storage function, the current limiting function is used for matching a dimmable LED lamp circuit connected with the dimmer circuit, and the electric energy storage function is used for providing normal electric energy for the dimmer circuit within a certain time without electric energy input; the electronic switch circuit and the energy storage voltage stabilizing circuit are respectively connected with the rectifying circuit, the energy storage voltage stabilizing circuit is respectively connected with the electronic switch circuit, the signal processing control circuit and the wireless communication module, the wireless communication module is used for communicating with a remote controller to obtain a control signal and transmitting the control signal to the signal processing control circuit, the electronic switch circuit enters an open circuit state or a short circuit state under the control of the signal processing control circuit, when the electronic switch circuit is in the open circuit state, the energy storage voltage stabilizing circuit converts the direct current voltage output by the rectifying circuit into two direct current voltages with different sizes, wherein one direct current voltage supplies power to the electronic switch circuit, the other direct current voltage supplies power to the wireless communication module and the signal processing control circuit, when the electronic switch circuit is short-circuited, the input end and the output end of the dimmer circuit are short-circuited through the rectifying circuit, and no current flows into, the electric energy required by the dimmer circuit is provided by the electric energy stored by the energy storage voltage stabilizing circuit when the electronic switch circuit is opened; the period of the mains supply alternating current is recorded as 2T, then the half sine wave period of the mains supply alternating current is T, the control period of the signal processing control circuit is T, and each control period of the signal processing control circuit is divided into three intervals: 0-T1, T1-T2 and T2-T, wherein T1 is a preset fixed value, the energy storage voltage stabilizing circuit stores electric energy in an interval of 0-T1, the value of T1 enables the electric energy stored by the energy storage voltage stabilizing circuit to be enough to provide normal electric energy for the dimmer circuit in a control period of the signal processing control circuit, generally, the value is not more than 3mS, the value of T2 is more than or equal to T1 and less than T, the difference value of T2-T1 is the time for providing voltage for the connected LED lamp, the larger the difference value is, the larger the effective value of the input voltage of the LED lamp is, the larger the brightness of the LED lamp is, otherwise, the smaller the difference value is, the smaller the brightness of the LED lamp is, and if the value is zero, the lamp is in a light-off state; t2 has initial default value when the dimmer circuit is used for the first time, then it is updated by the signal processing control circuit according to the control signal received by the wireless communication module, in the signal processing control circuit, the comparison table of the value of t2 and the control signal sent by the remote controller is pre-stored; when the dimmer circuit is powered on and started, the signal processing control circuit firstly controls the electronic switch circuit to enter an initial state, the initial state of the electronic switch circuit is an open-circuit state, the signal processing control circuit acquires a judgment signal output by the zero voltage detection circuit in real time, when the instantaneous voltage of the commercial power alternating current corresponding to the judgment signal output by the zero voltage detection circuit acquired at a certain moment is zero, the initial state of the electronic switch circuit is ended, and the signal processing control circuit starts to time and enter a control period by taking the moment as a timing 0 point; in the interval from 0 to T1 of the control period, the signal processing control circuit controls the electronic switch circuit to keep an open-circuit state, in the interval from T1 to T2 of the control period, the signal processing control circuit controls the electronic switch circuit to keep a short-circuit state, and in the interval from T2 to T of the control period, the signal processing control circuit controls the electronic switch circuit to keep the open-circuit state again; in any control period, the wireless communication module can receive a control signal sent by a remote controller, the signal processing control circuit analyzes the control signal to obtain t2 data corresponding to the control signal, the obtained t2 data is adopted to update t2 of the next control period, and the next control period is divided into three intervals according to the updated t2 to control the short-circuit state and the open-circuit state of the electronic switching circuit; in the interval from t1 to t2, the signal processing control circuit does not acquire the judgment signal output by the zero voltage detection circuit any more; and starting from the time T2, the signal processing control circuit controls the electronic switch circuit to enter an open-circuit state, the signal processing control circuit acquires the judgment signal output by the zero voltage detection circuit again in real time, the commercial power alternating-current voltage corresponding to the judgment signal output by the zero voltage detection circuit acquired by the signal processing control circuit at the time T is zero, the control period is ended, and the signal processing control circuit enters the next control period and repeats.
As shown in fig. 2, in this embodiment, the zero voltage detection circuit has a first input terminal, a second input terminal, an output terminal and a ground terminal, the rectification circuit has a live wire input terminal, a zero wire input terminal, an output terminal and a ground terminal, the energy storage voltage stabilizing circuit has an input terminal, a first output terminal, a second output terminal and a ground terminal, the electronic switch circuit has an anode, a cathode, a power terminal and a control terminal, the wireless communication module has an anode, a cathode and an output terminal, the signal processing control circuit has an anode, a cathode, a voltage signal input terminal, a wireless signal input terminal and an output terminal, the live wire input terminal of the rectification circuit is connected with the first input terminal of the zero voltage detection circuit and the connection terminal thereof is the input terminal of the dimmer circuit, the zero wire input terminal of the rectification circuit is connected with the second input terminal of the zero voltage detection circuit and the connection terminal thereof, The input end of the energy storage and voltage stabilizing circuit is connected, the first output end of the energy storage and voltage stabilizing circuit is connected with the power supply end of the electronic switch circuit, the second output end of the energy storage and voltage stabilizing circuit is respectively connected with the positive electrode of the wireless communication module and the positive electrode of the signal processing control circuit, the output end of the zero voltage detection circuit is connected with the voltage signal input end of the signal processing control circuit, the output end of the wireless communication module is connected with the wireless signal input end of the signal processing control circuit, the output end of the signal processing control circuit is connected with the control end of the electronic switch circuit, the grounding end of the rectifying circuit, the negative electrode of the electronic switch circuit, the grounding end of the energy storage and voltage stabilizing circuit, the.
As shown in fig. 4, in the present embodiment, the zero voltage detection circuit includes a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C1 and a first diode D1, the first diode D1 is a zener diode, one end of the first resistor R1 is a first input end of the zero voltage detection circuit, one end of the second resistor R2 is a second input end of the zero voltage detection circuit, the other end of the first resistor R1, the other end of the second resistor R2, one end of the third resistor R3, one end of the first capacitor C1 and a negative electrode of the first diode D1 are connected, and a connection end thereof is an output end of the zero voltage detection circuit, the other end of the third resistor R3, the other end of the first capacitor C1 and a positive electrode of the first diode D1 are connected, and a connection end thereof is a ground end of the zero voltage detection circuit.
As shown in fig. 4, in this embodiment, the electronic switch circuit includes a first NMOS transistor N1, a second NMOS transistor N2, a fourth resistor R4, and a second capacitor C2, a drain of the first NMOS transistor N1 is an anode of the electronic switch circuit, a gate of the first NMOS transistor N1, one end of the fourth resistor R4, one end of the second capacitor C2, and a drain of the second NMOS transistor N2 are connected, another end of the fourth resistor R4 is a power end of the electronic switch circuit, a gate of the second NMOS transistor N2 is a control end of the electronic switch circuit, a source of the first NMOS transistor N1, a source of the second NMOS transistor N2, and another end of the second capacitor C2 are connected, and a connection end of the first NMOS transistor N1, the second NMOS transistor N2, the fourth resistor R4, and the second capacitor C2 are.
As shown in fig. 4, in the present embodiment, the energy storage voltage stabilizing circuit includes a first chip U1, a second chip U2, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a third capacitor C3, a fourth capacitor C4, a second diode D2, a third diode D3, and a first transistor Q1, where the first chip U1 is of model SM2083, the second chip U2 is a three-terminal linear voltage stabilizing circuit having an input pin, an output pin, and a ground pin, the third capacitor C3 is an electrolytic capacitor, the second diode D2 is a rectifier diode, the third diode D3 is a zener diode, the positive terminal of the second diode D2 is connected to one end of the fifth resistor R5, and the connection terminal thereof is an input terminal of the energy storage voltage stabilizing circuit, the negative terminal of the second diode D2, the 8 th pin of the first chip U1 and one end of the seventh resistor R7 are connected to the other end of the first chip U8653 and the first pin 8653 are connected to the first chip R8653, the other end of the fifth resistor R5, one end of the sixth resistor R6, and the anode of the third diode D3 are connected to the base of the first triode Q1, the collector of the first triode Q1 is connected to one end of the eighth resistor R8, the other end of the eighth resistor R8 is connected to the 4 th pin of the first chip U1, the 5 th pin of the first chip U1 is connected to one end of the ninth resistor R9, the 3 rd pin of the first chip U1, the cathode of the third diode D3, the other end of the ninth resistor R9, the anode of the third capacitor C3 is connected to the input pin of the second chip U2, and the connection end of the third capacitor C1 is the first output end of the energy storage voltage stabilizing circuit, the output pin of the second chip U2 is connected to one end of the fourth capacitor C4, and the connection end of the second output end of the energy storage voltage stabilizing circuit is the second output end of, the other end of the sixth resistor R6, the emitter of the first triode Q1, the cathode of the third capacitor C3, the other end of the fourth capacitor C4 and the grounding pin of the second chip U2 are connected, and the connection end of the fourth capacitor C4 is the grounding end of the energy storage voltage stabilizing circuit.
As shown in fig. 4, in this embodiment, the rectifying circuit is implemented by using a full-bridge rectifier Db, the 1 st pin of the full-bridge rectifier Db is the live wire input end of the rectifying circuit, the 3 rd pin of the full-bridge rectifier Db is the zero line input end of the rectifying circuit, the 2 nd pin of the full-bridge rectifier Db is the output end of the rectifying circuit, and the 4 th pin of the full-bridge rectifier Db is the ground end of the rectifying current.
Example two: as shown in fig. 3, a remote-controllable dimmer circuit has an input terminal for connecting a live wire of a mains supply and an output terminal for connecting a live wire input terminal of a dimmable lamp, the dimmer circuit includes a zero-voltage detection circuit, a rectification circuit, an energy-storage voltage-stabilizing circuit, an electronic switch circuit, a wireless communication module, a signal processing control circuit and a key input circuit, the rectification circuit is used for accessing a mains supply alternating-current voltage and converting the accessed mains supply alternating-current voltage into a direct-current voltage, the zero-voltage detection circuit is used for detecting whether an instantaneous voltage of the mains supply alternating-current is zero or not in real time and outputting a corresponding determination signal when the electronic switch circuit is opened, the energy-storage voltage-stabilizing circuit has a current-limiting function of limiting a maximum input current and an electric energy storage function, the current-limiting function is used for matching a dimmable LED lamp circuit connected with the dimmer circuit, the electric energy storage function is, providing normal power to the dimmer circuit; the key input circuit is connected with the signal processing control circuit and is used for a user to manually input a dimming control signal; the electronic switch circuit and the energy storage voltage stabilizing circuit are respectively connected with the rectifying circuit, the energy storage voltage stabilizing circuit is respectively connected with the electronic switch circuit, the signal processing control circuit and the wireless communication module, the wireless communication module is used for communicating with a remote controller to obtain a control signal and transmitting the control signal to the signal processing control circuit, the electronic switch circuit enters an open circuit state or a short circuit state under the control of the signal processing control circuit, when the electronic switch circuit is in the open circuit state, the energy storage voltage stabilizing circuit converts the direct current voltage output by the rectifying circuit into two direct current voltages with different sizes, wherein one direct current voltage supplies power to the electronic switch circuit, the other direct current voltage supplies power to the wireless communication module and the signal processing control circuit, when the electronic switch circuit is short-circuited, the input end and the output end of the dimmer circuit are short-circuited through the rectifying circuit, and no current flows into, the electric energy required by the dimmer circuit is provided by the electric energy stored by the energy storage voltage stabilizing circuit when the electronic switch circuit is opened; the period of the mains supply alternating current is recorded as 2T, then the half sine wave period of the mains supply alternating current is T, the control period of the signal processing control circuit is T, and each control period of the signal processing control circuit is divided into three intervals: 0-T1, T1-T2 and T2-T, wherein T1 is a preset fixed value, the energy storage voltage stabilizing circuit stores electric energy in an interval of 0-T1, the value of T1 enables the electric energy stored by the energy storage voltage stabilizing circuit to be enough to provide normal electric energy for the dimmer circuit in a control period of the signal processing control circuit, generally, the value is not more than 3mS, the value of T2 is more than or equal to T1 and less than T, the difference value of T2-T1 is the time for providing voltage for the connected LED lamp, the larger the difference value is, the larger the effective value of the input voltage of the LED lamp is, the larger the brightness of the LED lamp is, otherwise, the smaller the difference value is, the smaller the brightness of the LED lamp is, and if the value is zero, the lamp is in a light-off state; t2 has initial default value when the dimmer circuit is used for the first time, then it is updated by the signal processing control circuit according to the control signal received by the wireless communication module, in the signal processing control circuit, the comparison table of the value of t2 and the control signal sent by the remote controller is pre-stored; when the dimmer circuit is powered on and started, the signal processing control circuit firstly controls the electronic switch circuit to enter an initial state, the initial state of the electronic switch circuit is an open-circuit state, the signal processing control circuit acquires a judgment signal output by the zero voltage detection circuit in real time, when the instantaneous voltage of the commercial power alternating current corresponding to the judgment signal output by the zero voltage detection circuit acquired at a certain moment is zero, the initial state of the electronic switch circuit is ended, and the signal processing control circuit starts to time and enter a control period by taking the moment as a timing 0 point; in the interval from 0 to T1 of the control period, the signal processing control circuit controls the electronic switch circuit to keep an open-circuit state, in the interval from T1 to T2 of the control period, the signal processing control circuit controls the electronic switch circuit to keep a short-circuit state, and in the interval from T2 to T of the control period, the signal processing control circuit controls the electronic switch circuit to keep the open-circuit state again; in any control period, the wireless communication module can receive a control signal sent by a remote controller, the signal processing control circuit analyzes the control signal to obtain t2 data corresponding to the control signal, the obtained t2 data is adopted to update t2 of the next control period, and the next control period is divided into three intervals according to the updated t2 to control the short-circuit state and the open-circuit state of the electronic switching circuit; in the interval from t1 to t2, the signal processing control circuit does not acquire the judgment signal output by the zero voltage detection circuit any more; and starting from the time T2, the signal processing control circuit controls the electronic switch circuit to enter an open-circuit state, the signal processing control circuit acquires the judgment signal output by the zero voltage detection circuit again in real time, the commercial power alternating-current voltage corresponding to the judgment signal output by the zero voltage detection circuit acquired by the signal processing control circuit at the time T is zero, the control period is ended, and the signal processing control circuit enters the next control period and repeats.
As shown in FIG. 3, in this embodiment, the zero voltage detection circuit has a first input terminal, a second input terminal, an output terminal and a ground terminal, the rectification circuit has a live wire input terminal, a zero wire input terminal, an output terminal and a ground terminal, the energy storage voltage stabilizing circuit has an input terminal, a first output terminal, a second output terminal and a ground terminal, the electronic switch circuit has an anode, a cathode, a power terminal and a control terminal, the wireless communication module has an anode, a cathode and an output terminal, the signal processing control circuit has an anode, a cathode, a voltage signal input terminal, a wireless signal input terminal and an output terminal, the live wire input terminal of the rectification circuit is connected with the first input terminal of the zero voltage detection circuit and the connection terminal thereof is the input terminal of the dimmer circuit, the zero wire input terminal of the rectification circuit is connected with the second input terminal of the zero voltage detection circuit and the connection terminal thereof, The input end of the energy storage and voltage stabilizing circuit is connected, the first output end of the energy storage and voltage stabilizing circuit is connected with the power supply end of the electronic switch circuit, the second output end of the energy storage and voltage stabilizing circuit is respectively connected with the positive electrode of the wireless communication module and the positive electrode of the signal processing control circuit, the output end of the zero voltage detection circuit is connected with the voltage signal input end of the signal processing control circuit, the output end of the wireless communication module is connected with the wireless signal input end of the signal processing control circuit, the output end of the signal processing control circuit is connected with the control end of the electronic switch circuit, the grounding end of the rectifying circuit, the negative electrode of the electronic switch circuit, the grounding end of the energy storage and voltage stabilizing circuit, the.
As shown in fig. 4, in the present embodiment, the zero voltage detection circuit includes a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C1 and a first diode D1, the first diode D1 is a zener diode, one end of the first resistor R1 is a first input end of the zero voltage detection circuit, one end of the second resistor R2 is a second input end of the zero voltage detection circuit, the other end of the first resistor R1, the other end of the second resistor R2, one end of the third resistor R3, one end of the first capacitor C1 and a negative electrode of the first diode D1 are connected, and a connection end thereof is an output end of the zero voltage detection circuit, the other end of the third resistor R3, the other end of the first capacitor C1 and a positive electrode of the first diode D1 are connected, and a connection end thereof is a ground end of the zero voltage detection circuit.
As shown in fig. 4, in this embodiment, the electronic switch circuit includes a first NMOS transistor N1, a second NMOS transistor N2, a fourth resistor R4, and a second capacitor C2, a drain of the first NMOS transistor N1 is an anode of the electronic switch circuit, a gate of the first NMOS transistor N1, one end of the fourth resistor R4, one end of the second capacitor C2, and a drain of the second NMOS transistor N2 are connected, another end of the fourth resistor R4 is a power end of the electronic switch circuit, a gate of the second NMOS transistor N2 is a control end of the electronic switch circuit, a source of the first NMOS transistor N1, a source of the second NMOS transistor N2, and another end of the second capacitor C2 are connected, and a connection end of the first NMOS transistor N1, the second NMOS transistor N2, the fourth resistor R4, and the second capacitor C2 are.
As shown in fig. 4, in the present embodiment, the energy storage voltage stabilizing circuit includes a first chip U1, a second chip U2, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a third capacitor C3, a fourth capacitor C4, a second diode D2, a third diode D3, and a first transistor Q1, where the first chip U1 is of model SM2083, the second chip U2 is a three-terminal linear voltage stabilizing circuit having an input pin, an output pin, and a ground pin, the third capacitor C3 is an electrolytic capacitor, the second diode D2 is a rectifier diode, the third diode D3 is a zener diode, the positive terminal of the second diode D2 is connected to one end of the fifth resistor R5, and the connection terminal thereof is an input terminal of the energy storage voltage stabilizing circuit, the negative terminal of the second diode D2, the 8 th pin of the first chip U1 and one end of the seventh resistor R7 are connected to the other end of the first chip U8653 and the first pin 8653 are connected to the first chip R8653, the other end of the fifth resistor R5, one end of the sixth resistor R6, and the anode of the third diode D3 are connected to the base of the first triode Q1, the collector of the first triode Q1 is connected to one end of the eighth resistor R8, the other end of the eighth resistor R8 is connected to the 4 th pin of the first chip U1, the 5 th pin of the first chip U1 is connected to one end of the ninth resistor R9, the 3 rd pin of the first chip U1, the cathode of the third diode D3, the other end of the ninth resistor R9, the anode of the third capacitor C3 is connected to the input pin of the second chip U2, and the connection end of the third capacitor C1 is the first output end of the energy storage voltage stabilizing circuit, the output pin of the second chip U2 is connected to one end of the fourth capacitor C4, and the connection end of the second output end of the energy storage voltage stabilizing circuit is the second output end of, the other end of the sixth resistor R6, the emitter of the first triode Q1, the cathode of the third capacitor C3, the other end of the fourth capacitor C4 and the grounding pin of the second chip U2 are connected, and the connection end of the fourth capacitor C4 is the grounding end of the energy storage voltage stabilizing circuit.
As shown in fig. 4, in this embodiment, the rectifying circuit is implemented by using a full-bridge rectifier Db, the 1 st pin of the full-bridge rectifier Db is the live wire input end of the rectifying circuit, the 3 rd pin of the full-bridge rectifier Db is the zero line input end of the rectifying circuit, the 2 nd pin of the full-bridge rectifier Db is the output end of the rectifying circuit, and the 4 th pin of the full-bridge rectifier Db is the ground end of the rectifying current.
Claims (7)
1. A remote-controlled dimmer circuit is provided with an input end for connecting a live wire of a mains supply and an output end for connecting the live wire input end of a dimmable lamp, and is characterized in that the dimmer circuit comprises a zero-voltage detection circuit, a rectifying circuit, an energy storage voltage stabilizing circuit, an electronic switch circuit, a wireless communication module and a signal processing control circuit; the energy storage voltage stabilizing circuit has a current limiting function for limiting the maximum input current and an electric energy storage function, the current limiting function is used for matching a dimmable LED lamp circuit connected with the dimmer circuit, and the electric energy storage function is used for providing normal electric energy for the dimmer circuit within a certain time without electric energy input;
the electronic switch circuit and the energy storage voltage stabilizing circuit are respectively connected with the rectifying circuit, the energy storage voltage stabilizing circuit is respectively connected with the electronic switch circuit, the signal processing control circuit and the wireless communication module, the wireless communication module is used for communicating with a remote controller to obtain a control signal and transmitting the control signal to the signal processing control circuit, the electronic switch circuit enters an open circuit state or a short circuit state under the control of the signal processing control circuit, when the electronic switch circuit is in the open circuit state, the energy storage voltage stabilizing circuit converts the direct current voltage output by the rectifying circuit into two direct current voltages with different sizes, wherein one direct current voltage supplies power to the electronic switch circuit, and the other direct current voltage supplies power to the wireless communication module and the signal processing control circuit, when the electronic switch circuit is short-circuited, the input end and the output end of the dimmer circuit are short-circuited through the rectifying circuit, no current flows into the energy storage voltage stabilizing circuit at the moment, and the electric energy required by the dimmer circuit is provided by the electric energy stored by the energy storage voltage stabilizing circuit when the electronic switch circuit is open-circuited;
marking the period of the mains supply alternating current as 2T, wherein the period of a half sine wave of the mains supply alternating current is T, the control period of the signal processing control circuit is T, and each control period of the signal processing control circuit is divided into three intervals: 0-T1, T1-T2 and T2-T, wherein T1 is a fixed value, the value of T2 is greater than or equal to T1 and smaller than T, T2 has an initial default value when the dimmer circuit is used for the first time, then the dimmer circuit is updated by the signal processing control circuit according to the control signal received by the wireless communication module, and a comparison table of the value of T2 and the control signal sent by the remote controller is prestored in the signal processing control circuit;
when the dimmer circuit is powered on and started, the signal processing control circuit firstly controls the electronic switch circuit to enter an initial state, the initial state of the electronic switch circuit is an open-circuit state, the signal processing control circuit acquires a judgment signal output by the zero voltage detection circuit in real time, when the instantaneous voltage of the commercial power alternating current corresponding to the judgment signal output by the zero voltage detection circuit acquired at a certain moment is zero, the initial state of the electronic switch circuit is ended, and the signal processing control circuit starts to time and enter a control cycle by taking the moment as a timing 0 point; the signal processing control circuit controls the electronic switch circuit to keep an open state in a section from 0 to T1 of the control period, controls the electronic switch circuit to keep a short-circuit state in a section from T1 to T2 of the control period, and controls the electronic switch circuit to keep an open state again in a section from T2 to T of the control period; in any control period, the wireless communication module can receive a control signal sent by a remote controller, the signal processing control circuit analyzes the control signal to obtain t2 data corresponding to the control signal, the obtained t2 data is adopted to update t2 of the next control period, and the next control period is divided into three intervals according to the updated t2 to control the short circuit state and the open circuit state of the electronic switching circuit; in the interval from t1 to t2, the signal processing control circuit does not acquire the judgment signal output by the zero voltage detection circuit any more; starting from the time T2, the signal processing control circuit controls the electronic switch circuit to enter an open-circuit state, the signal processing control circuit acquires the determination signal output by the zero voltage detection circuit again in real time, the commercial power alternating-current voltage corresponding to the determination signal output by the zero voltage detection circuit acquired by the signal processing control circuit at the time T is zero, the control period is ended at this time, and the signal processing control circuit enters the next control period and repeats.
2. The remote-controllable dimmer circuit according to claim 1, wherein said zero-voltage detection circuit has a first input terminal, a second input terminal, an output terminal and a ground terminal, said rectifying circuit has a live input terminal, a neutral input terminal, an output terminal and a ground terminal, said energy-storing voltage-stabilizing circuit has an input terminal, a first output terminal, a second output terminal and a ground terminal, said electronic switching circuit has a positive terminal, a negative terminal, a power terminal and a control terminal, said wireless communication module has a positive terminal, a negative terminal and an output terminal, said signal processing control circuit has a positive terminal, a negative terminal, a voltage signal input terminal, a wireless signal input terminal and an output terminal, said live input terminal of said rectifying circuit is connected to said first input terminal of said zero-voltage detection circuit and its connection terminal is said input terminal of said dimmer circuit, the zero line input end of the rectifying circuit is connected with the second input end of the zero voltage detection circuit, the connecting end of the rectifying circuit is the output end of the dimmer circuit, the output end of the rectifying circuit is connected with the anode of the electronic switch circuit and the input end of the energy storage voltage stabilizing circuit, the first output end of the energy storage voltage stabilizing circuit is connected with the power supply end of the electronic switch circuit, the second output end of the energy storage voltage stabilizing circuit is respectively connected with the anode of the wireless communication module and the anode of the signal processing control circuit, the output end of the zero voltage detection circuit is connected with the voltage signal input end of the signal processing control circuit, the output end of the wireless communication module is connected with the wireless signal input end of the signal processing control circuit, and the output end of the signal processing control circuit is connected with the control end of the electronic switch circuit, the ground terminal of the rectification circuit, the negative electrode of the electronic switch circuit, the ground terminal of the energy storage voltage stabilizing circuit, the negative electrode of the signal processing control circuit and the ground terminal of the wireless communication module are connected.
3. A remotely controllable dimmer circuit as claimed in claim 2, wherein said zero voltage detection circuit comprises a first resistor, a second resistor, a third resistor, a first capacitor and a first diode, the first diode is a voltage stabilizing diode, one end of the first resistor is a first input end of the zero voltage detection circuit, one end of the second resistor is a second input end of the zero voltage detection circuit, the other end of the first resistor, the other end of the second resistor, one end of the third resistor, one end of the first capacitor and the cathode of the first diode are connected, and the connection end of the first capacitor and the cathode of the first diode is an output end of the zero voltage detection circuit, the other end of the third resistor, the other end of the first capacitor and the anode of the first diode are connected, and the connecting end of the third resistor and the anode of the first capacitor is the grounding end of the zero voltage detection circuit.
4. A remote controllable dimmer circuit as claimed in claim 2, wherein said electronic switch circuit comprises a first NMOS transistor, a second NMOS transistor, a fourth resistor and a second capacitor, wherein the drain of said first NMOS transistor is the positive electrode of said electronic switch circuit, the gate of said first NMOS transistor, one end of said fourth resistor, one end of said second capacitor are connected to the drain of said second NMOS transistor, the other end of said fourth resistor is the power supply terminal of said electronic switch circuit, the gate of said second NMOS transistor is the control terminal of said electronic switch circuit, the source of said first NMOS transistor, the source of said second NMOS transistor and the other end of said second capacitor are connected, and the connection terminal thereof is the negative electrode of said electronic switch circuit.
5. The remote-controllable dimmer circuit according to claim 2, wherein said energy-storage voltage-stabilizing circuit comprises a first chip, a second chip, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor R9, a third capacitor, a fourth capacitor, a second diode, a third diode and a first triode, said first chip is of type SM2083, said second chip is a three-terminal linear voltage-stabilizing circuit having an input pin, an output pin and a ground pin, said third capacitor is an electrolytic capacitor, said second diode is a rectifier diode, said third diode is a zener diode, the anode of said second diode is connected to one end of said fifth resistor and the connection end thereof is the input end of said energy-storage voltage-stabilizing circuit, the cathode of said second diode, the 8 th pin of said first chip is connected to one end of said seventh resistor, the other end of the seventh resistor is connected with the 1 st pin of the first chip, the other end of the fifth resistor, one end of the sixth resistor, the anode of the third diode are connected with the base of the first triode, the collector of the first triode is connected with one end of the eighth resistor, the other end of the eighth resistor is connected with the 4 th pin of the first chip, the 5 th pin of the first chip is connected with one end of the ninth resistor R9, the 3 rd pin of the first chip, the cathode of the third diode, the other end of the ninth resistor R9, the anode of the third capacitor are connected with the input pin of the second chip, the connection end of the third capacitor is the first output end of the energy storage voltage stabilizing circuit, the output pin of the second chip is connected with one end of the fourth capacitor, and the connection end of the second chip is the second output end of the energy storage voltage stabilizing circuit, the other end of the sixth resistor, the emitter of the first triode, the cathode of the third capacitor, the other end of the fourth capacitor and the grounding pin of the second chip are connected, and the connecting end of the fourth capacitor is the grounding end of the energy storage voltage stabilizing circuit.
6. A remotely controllable dimmer circuit as claimed in claim 2, wherein said rectifier circuit is implemented using a full bridge rectifier stack, said full bridge rectifier stack has a pin 1 as the live input of said rectifier circuit, said full bridge rectifier stack has a pin 3 as the neutral input of said rectifier circuit, said full bridge rectifier stack has a pin 2 as the output of said rectifier circuit, and said full bridge rectifier stack has a pin 4 as the ground of said rectified current.
7. A remotely controllable dimmer circuit as claimed in claim 2, further comprising a key input circuit, said key input circuit being connected to said signal processing and control circuit, said key input circuit being adapted for manual operation by a user to input a dimming control signal.
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| CN1705421A (en) * | 2004-06-01 | 2005-12-07 | 深圳市日锋电子有限公司 | Digital remote controlled dimmer switch capable of controlling energy-saving lamp |
| CN201114873Y (en) * | 2007-06-12 | 2008-09-10 | 陕西博开光电技术有限公司 | A single fire line circuit and remote control single fire line switch control device |
| CN102281689B (en) * | 2011-09-15 | 2013-12-25 | 徐建坤 | Built-in small-size wireless remote control light modulator |
| CN202455607U (en) * | 2012-01-10 | 2012-09-26 | 四川格兰德科技有限公司 | Remote control dimming device controlled through direct-current voltage signal |
| CN102647830B (en) * | 2012-03-21 | 2016-08-03 | 无锡佳居智能科技有限公司 | Illumination control apparatus based on ZigBee, system and method |
| US9560718B2 (en) * | 2012-11-02 | 2017-01-31 | Laurence P. Sadwick | Dimmer with motion and light sensing |
| US9859833B1 (en) * | 2016-09-09 | 2018-01-02 | William V. Cook | Fixed and variable speed induction motor and light controller |
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