CN218829631U - Control circuit based on single live wire power carrier encoding - Google Patents
Control circuit based on single live wire power carrier encoding Download PDFInfo
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- CN218829631U CN218829631U CN202223473094.3U CN202223473094U CN218829631U CN 218829631 U CN218829631 U CN 218829631U CN 202223473094 U CN202223473094 U CN 202223473094U CN 218829631 U CN218829631 U CN 218829631U
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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
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- 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 utility model discloses a control circuit based on single live wire power carrier encoding, which comprises a low-voltage direct current conversion unit, a control unit, a chopping unit, a zero-crossing detection unit and an input unit; the input end of the low-voltage direct current conversion unit is electrically connected with a live wire of an alternating current line, and the output end of the low-voltage direct current conversion unit is electrically connected with the control unit, the chopping unit and the zero-crossing detection unit; the input end and the output end of the chopping unit are both electrically connected with a live wire of an alternating current circuit, and the chopping unit is electrically connected with the control unit; the input end of the zero-crossing detection unit is electrically connected with a live wire of the alternating current line, and the output end of the zero-crossing detection unit is electrically connected with the control unit; the output end of the input unit is electrically connected with the control unit; the utility model aims at providing a control circuit based on single live wire power carrier coding under the condition that need not carry out big change to the circuit, through the mode that single live wire flowed in and flowed out, controls alternating current signal to realize the drive and the control of rear end equipment.
Description
Technical Field
The utility model relates to a circuit control technical field especially relates to a control circuit based on single live wire power line carrier coding.
Background
The existing circuit control generally keeps a gear controller, a control switch and a control panel are independent in space, the control switch is arranged at a position which is easy to contact by a user, the control panel is generally arranged in back-end equipment, a use scene does not have an access AC zero line, and the working state of the back-end equipment is difficult to control by adopting the existing connection mode on the premise of not increasing a wiring and low cost. In the prior art, the method generally adopts additional wiring or uses wireless RF emission remote control and the like, and has the defects of complex installation, high cost and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a control circuit based on single live wire power carrier coding under the condition that need not carry out big change to the circuit, through single live wire inflow and the mode that flows out, controls alternating current signal to realize the drive and the control of rear end equipment.
To achieve the purpose, the utility model adopts the following technical proposal: a control circuit based on single live wire power carrier coding comprises a low-voltage direct current conversion unit, a control unit, a chopping unit, a zero-crossing detection unit and an input unit;
the input end of the low-voltage direct current conversion unit is electrically connected with a live wire of an alternating current line, the output end of the low-voltage direct current conversion unit is electrically connected with the control unit, the chopping unit and the zero-crossing detection unit, and the low-voltage direct current conversion unit is used for supplying power to the control unit, the chopping unit and the zero-crossing detection unit;
the input end and the output end of the chopping unit are both electrically connected with a live wire of an alternating current circuit, the chopping unit is electrically connected with the control unit, and the chopping unit is used for receiving the signal of the control unit, chopping the alternating current and outputting the chopped signal through the live wire of the alternating current circuit;
the input end of the zero-crossing detection unit is electrically connected with a live wire of an alternating current line, the output end of the zero-crossing detection unit is electrically connected with the control unit, and the zero-crossing detection unit is used for carrying out zero-crossing detection on an alternating current signal and sending a detection signal to the control unit;
the output end of the input unit is electrically connected with the control unit, and the input unit is used for outputting a key signal to the control unit;
the control unit is used for receiving key signals and zero crossing point detection signals and sending signals to the chopping unit.
Preferably, the chopper unit includes a chopper circuit and a push-pull circuit, the chopper circuit is electrically connected to a live wire of an ac line, the chopper circuit is electrically connected to the push-pull circuit, the push-pull circuit is electrically connected to the control unit, the push-pull circuit is configured to receive a signal sent by the control unit and send the signal to the chopper circuit, and the chopper circuit chops the ac signal according to the received signal.
Preferably, the chopper circuit comprises a rectifier bridge and an MOS (metal oxide semiconductor) tube; the second pin and the third pin of the rectifier bridge are electrically connected with a live wire of an alternating current circuit, the first pin of the rectifier bridge is electrically connected with the second pin of the MOS tube, the fourth pin of the rectifier bridge and the third pin of the MOS tube are grounded, and the first pin of the MOS tube is electrically connected with the push-pull circuit.
Preferably, the push-pull circuit comprises a resistor R21, a triode Q4, a triode Q3, a first optocoupler, a capacitor C9, a resistor R22 and a resistor R23;
the low-voltage direct current conversion unit with the one end of resistance R21, the fourth pin of first opto-coupler and electric capacity C9's one end electricity is connected, resistance R21's the other end with triode Q4's collection third pin electricity is connected, triode Q4's second pin with triode Q3's second pin and MOS pipe's first pin electricity is connected, triode Q3's third pin ground connection, triode Q4's first pin triode Q3 and resistance R22's one end with the third pin electricity of first opto-coupler is connected, resistance R22's other end ground connection, electric capacity C9's other end ground connection, the first pin of first opto-coupler with resistance R23's one end electricity is connected, resistance R23's the other end with the control unit electricity is connected, the second pin ground connection of first opto-coupler.
Preferably, the zero-crossing detection unit includes a resistor R10, a resistor R11, a capacitor C7, a resistor R15, a resistor R16, a resistor R12, a resistor R14, an operational amplifier, a resistor R18, a diode D8, a resistor R20, and a second optical coupler;
the one end of resistance R10 is connected with the live wire electricity of alternating current circuit, the other end of resistance R10 with the one end electricity of resistance R11 is connected, the other end of resistance R11 with the one end of resistance R15, the one end of resistance R18 and the first pin electricity of operational amplifier are connected, the other end of resistance R15 with low pressure direct current conversion unit the one end of electric capacity C7 and the one end electricity of resistance R16 are connected, the other end ground connection of electric capacity C7, the other end of resistance R16 with the one end of resistance R14 and the third pin electricity of operational amplifier is connected, the other end of resistance R14 with the one end electricity of resistance R12 is connected, the other end of resistance R12 and the third pin electricity of rectifier bridge are connected with the live wire electricity of alternating current circuit, the fourth pin of operational amplifier with the one end of resistance R20 and the negative pole end electricity of diode D8 are connected, the other end of resistance R20 with the first pin electricity of second pin electricity is connected, the second pin ground connection of second opto-coupler, the fourth pin of second opto-coupler control unit electricity is connected, the second pin of second opto-coupler is connected with the second ground connection operational amplifier, the second pin electricity is connected with the second opto-circuit ground connection of opto-coupler unit.
Preferably, the model of the operational amplifier is LM321.
Preferably, the low-voltage direct-current conversion unit comprises a power taking circuit, a power chip, a connecting circuit and a voltage reduction circuit, wherein one end of the power taking circuit is electrically connected with a live wire of an alternating-current line, and the other end of the power taking circuit is electrically connected with the power chip; one end of the connecting circuit is electrically connected with the power supply chip, and the other end of the connecting circuit is electrically connected with the zero-crossing detection unit; one end of the voltage reduction circuit is electrically connected with the power chip, and the other end of the voltage reduction circuit is electrically connected with the control unit.
Preferably, the chip model of the power supply chip is BP2535.
The utility model discloses a technical scheme's beneficial effect: the live wire of the alternating current circuit is connected with the low-voltage direct current conversion unit to carry out power taking and voltage reduction operations, so that power is provided for other circuit elements; through the live wire access chopper unit and the zero crossing detection unit at alternating current circuit, the user sends the signal to the control unit from the input unit, and the control unit adjusts the output of exchanging through the chopper unit to realize on-off control's purpose, cooperate the zero crossing detection unit simultaneously and avoid when the chopper, during the chopper, zero point leads to the unable output waveform of circuit. The customer directly carries out on-off control through the mode that single live wire flowed in and single live wire flowed out under the condition that need not carry out big change to the circuit, realizes functions such as the state of control fan or the state of lamp through the direct transmission signal of single live wire.
Drawings
FIG. 1 is a schematic connection diagram of an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of an embodiment of the present invention;
fig. 3 is a schematic diagram of the working steps of an embodiment of the present invention.
Wherein: the low-voltage direct current conversion circuit comprises a low-voltage direct current conversion unit 1, a power taking circuit 11, a connecting circuit 12, a voltage reduction circuit 13, a control unit 2, a chopping unit 3, a chopping circuit 31, a push-pull circuit 32, a zero-crossing detection unit 4 and an input unit 5.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the drawings.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 3, a control circuit based on single-live-wire power carrier encoding includes a low-voltage dc conversion unit 1, a control unit 2, a chopper unit 3, a zero-cross detection unit 4, and an input unit 5;
the input end of the low-voltage direct current conversion unit 1 is electrically connected with a live wire of an alternating current line, the output end of the low-voltage direct current conversion unit 1 is electrically connected with the control unit 2, the chopper unit 3 and the zero-crossing detection unit 4, and the low-voltage direct current conversion unit 1 is used for supplying power to the control unit 2, the chopper unit 3 and the zero-crossing detection unit 4;
the input end and the output end of the chopping unit 3 are both electrically connected with a live wire of an alternating current circuit, the chopping unit 3 is electrically connected with the control unit 2, and the chopping unit 3 is used for receiving the signal of the control unit 2, chopping the alternating current and outputting the chopped signal through the live wire of the alternating current circuit;
the input end of the zero-crossing detection unit 4 is electrically connected with a live wire of an alternating current line, the output end of the zero-crossing detection unit 4 is electrically connected with the control unit 2, and the zero-crossing detection unit 4 is used for carrying out zero-crossing detection on an alternating current signal and sending a detection signal to the control unit 2;
the output end of the input unit 5 is electrically connected with the control unit 2, and the input unit 5 is used for outputting a key signal to the control unit 2;
the control unit 2 is configured to receive a key signal and a zero crossing point detection signal, and send a signal to the chopper unit 3. The symbol of the control unit 2 in the circuit is U3, and the chip model of the control unit is ATM8F8040.
According to the technical scheme of the utility model, the low-voltage DC conversion unit 1 is connected to the live wire of the AC line to carry out the power taking and voltage reduction operation, so as to provide power for other circuit elements; the chopper unit 3 and the zero-crossing detection unit 4 are connected to the live wire of the alternating-current line, a user sends a signal to the control unit 2 from the input unit 5, the control unit 2 adjusts the output of alternating current through the chopper unit 3, and therefore the purpose of switching control is achieved, and meanwhile, when the zero-crossing detection unit 4 is matched to avoid chopping, zero points in chopping cause the circuit to be incapable of outputting waveforms.
The customer is under the condition that need not carry out big change to the circuit, directly carries out on-off control through the mode that single live wire flowed in and single live wire flows out, functions such as the state of control fan or lamp through the direct transmission signal of single live wire realization.
Preferably, the chopper unit 3 includes a chopper circuit 31 and a push-pull circuit 32, the chopper circuit 31 is electrically connected to a live line of an ac line, the chopper circuit 31 is electrically connected to the push-pull circuit 32, the push-pull circuit 32 is electrically connected to the control unit 2, the push-pull circuit 32 is configured to receive a signal sent by the control unit 2 and send the signal to the chopper circuit 31, and the chopper circuit 31 chops the ac signal according to the received signal.
The chopper circuit 31 comprises a rectifier bridge BD2 and a MOS tube Q1; the second pin and the third pin of the rectifier bridge BD2 are electrically connected with a live wire of an alternating current line, the first pin of the rectifier bridge BD2 is electrically connected with the second pin of the MOS transistor Q1, the fourth pin of the rectifier bridge BD2 and the third pin of the MOS transistor Q1 are grounded, and the first pin of the MOS transistor Q1 is electrically connected with the push-pull circuit 32.
The push-pull circuit 32 comprises a resistor R21, a triode Q4, a triode Q3, a first optocoupler, a capacitor C9, a resistor R22 and a resistor R23;
the low-voltage direct current conversion unit 1 with the one end of resistance R21, the fourth pin of first opto-coupler and the one end electricity of electric capacity C9 is connected, resistance R21's the other end with triode Q4's collection third pin electricity is connected, triode Q4's second pin with triode Q3's second pin and MOS pipe Q1's first pin electricity is connected, triode Q3's third pin ground connection, triode Q4's first pin, triode Q3's first pin and resistance R22's one end with the third pin electricity of first opto-coupler is connected, resistance R22's other end ground connection, electric capacity C9's other end ground connection, the first pin of first opto-coupler with the one end electricity of resistance R23 is connected, resistance R23's the other end with the control unit 2 electricity is connected, the second pin ground connection of first opto-coupler.
The chopper circuit 31 is matched with the push-pull circuit, after the control unit 2 receives an input signal, a light-emitting part of the first optical coupler, namely PC3-B in a circuit diagram, is used for driving a light-sensing part of the first optical coupler, namely PC3-A in the circuit diagram to work, and after the signal is amplified through the triode Q3 and the triode Q4, the signal is transmitted to the MOS tube Q1 in the chopper circuit 31 so as to drive the MOS tube Q1 to realize a chopping function. Because the utility model discloses in, what adopt is that high pressure MOS manages Q1 and carries out the chopper, consequently, through the signal of 2 outputs of the control unit, need pass through the triode and enlarge the back, can only realize the drive, the unable MOS pipe Q1 work of drive of the signal of 2 direct outputs of the control unit. The chopping method that adopts on the market at present is through the silicon controlled rectifier chopped wave, and the utility model discloses in, adopt rectifier bridge BD2 to carry out the chopping to rear end current, can realize the full-wave treatment to the alternating current, need not carry out positive half-wave to the alternating current alone and handle and burden half-wave. The first optocoupler PC3 is responsible for receiving PWM signals of the control unit 2 and transmitting the signals to the push-pull circuit, and the push-pull circuit realizes chopping through an MOS (metal oxide semiconductor) tube Q1 and a rectifier bridge BD2 in the chopper circuit.
Specifically, the zero-crossing detection unit 4 comprises a resistor R10, a resistor R11, a capacitor C7, a resistor R15, a resistor R16, a resistor R12, a resistor R14, an operational amplifier U2, a resistor R18, a diode D8, a resistor R20, and a second optocoupler;
the utility model discloses a rectifier bridge BD 2's live wire, including resistance R10, resistance R18, operational amplifier U2, resistance R15, resistance R12, resistance R10's one end and resistance R11's live wire electricity are connected, resistance R10's the other end with resistance R11's one end electricity is connected, resistance R11's the other end with resistance R15's one end, resistance R18's one end and operational amplifier U2's first pin electricity is connected, resistance R15's the other end with low pressure DC conversion unit 1 the one end of electric capacity C7 and the one end of resistance R16 is connected, electric capacity C7's other end ground connection, resistance R16's the other end with resistance R14's one end and operational amplifier U2's third pin electricity is connected, resistance R14's the other end with resistance R12's one end electricity is connected, resistance R12's the other end and rectifier bridge BD 2's third pin is connected with the live wire electricity of alternating current circuit, operational amplifier U2's fourth pin with resistance R20's one end and diode D8's negative pole end electricity is connected, resistance R20's the other end with the first pin electricity is connected of second opto-coupler's first pin electricity, the second pin of second opto-coupler's second opto-coupler, the fourth pin of second opto-coupler's second pin and the second opto-coupler unit electricity is connected, the second opto-coupler's second opto-coupler U2's second pin is connected, the second pin is connected the operational amplifier's second opto-coupler unit ground connection. The model of the operational amplifier U2 is LM321.
The utility model discloses in, on the live wire through with 4 direct access alternating current circuits of zero cross detection unit, do not be connected with the zero line electricity, through the voltage difference that uses rectifier bridge BD2 both ends, the amplified gain circuit is as a zero cross signal to the voltage difference amplified output that corresponds. The zero-crossing detection unit 4 sends a signal to the control unit 2 through the second optical coupler, when the control unit 2 detects that the second optical coupler changes in level, the zero-crossing point of the signal is represented, a period of time needs to be delayed until the position near the alternating current zero point is passed, and then chopping processing is achieved through the chopping unit 3. The second optical coupler PC2 is responsible for transmitting a zero-crossing signal to the control unit 2, and the control unit 2 adjusts chopping time according to the zero-crossing signal.
The positive half wave and the negative half wave are respectively input into the operational amplifier U2 through a first pin and a third pin of the operational amplifier U2, the operational amplifier U2 outputs a digital signal in a comparison mode, the control unit 2 detects the change of the digital signal to achieve zero-crossing detection, when the digital signal changes, the digital signal represents that the digital signal is near a zero point, and the control unit 2 delays for a period of time and then drives the chopping unit 3 to perform chopping operation.
Preferably, the low-voltage dc conversion unit 1 includes a power taking circuit 11, a power chip U1, a connection circuit 12, and a voltage reduction circuit 13, where one end of the power taking circuit 11 is electrically connected to a live wire of an ac line, and the other end of the power taking circuit 11 is electrically connected to the power chip U1; one end of the connection circuit 12 is electrically connected with the power supply chip U1, and the other end of the connection circuit 12 is electrically connected with the zero-crossing detection unit 4; one end of the voltage reduction circuit 13 is electrically connected with the power supply chip U1, and the other end of the voltage reduction circuit 13 is electrically connected with the control unit 2. The chip model of the power supply chip U1 is BP2535.
The utility model discloses in, carry out the chopper to the alternating current through the live wire at alternating current circuit, produce pulse signal, pulse signal transmits the chip perception of power end by the motor through the live wire, according to the required functional requirement of user, and the chip carries out corresponding control function.
The low-voltage direct-current conversion unit 1 supplies power to other elements of the circuit by taking power from a single live wire. The control unit 2 detects whether a user presses different keys in the input unit 5 by scanning, if the keys are pressed, an input signal is detected, the zero-crossing signal is processed by the zero-crossing detection unit 4, the chopping time node is adjusted, different PWM waveforms are output according to the difference of the input signal, the chopping unit 3 performs chopping processing on the waveform of the alternating current according to the PWM waveforms, and the chopped alternating current signal is sent to a rear-end device, such as a fan or a lamp, so that the control of the fan or the lamp is realized. The zero-crossing detection unit 4 detects the zero crossing point of the alternating current, can perform chopping more accurately, and avoids the phenomenon that the zero point in chopping cannot output waveforms during chopping.
In the description herein, references to the description of the terms "embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.
Claims (8)
1. A control circuit based on single live wire power carrier coding is characterized by comprising a low-voltage direct-current conversion unit, a control unit, a chopping unit, a zero-crossing detection unit and an input unit;
the input end of the low-voltage direct-current conversion unit is electrically connected with a live wire of an alternating-current line, the output end of the low-voltage direct-current conversion unit is electrically connected with the control unit, the chopping unit and the zero-crossing detection unit, and the low-voltage direct-current conversion unit is used for supplying power to the control unit, the chopping unit and the zero-crossing detection unit;
the input end and the output end of the chopping unit are both electrically connected with a live wire of an alternating current circuit, the chopping unit is electrically connected with the control unit, and the chopping unit is used for receiving the signal of the control unit, chopping the alternating current and outputting the chopped signal through the live wire of the alternating current circuit;
the input end of the zero-crossing detection unit is electrically connected with a live wire of an alternating current line, the output end of the zero-crossing detection unit is electrically connected with the control unit, and the zero-crossing detection unit is used for carrying out zero-crossing detection on an alternating current signal and sending the detection signal to the control unit;
the output end of the input unit is electrically connected with the control unit, and the input unit is used for outputting a key signal to the control unit;
the control unit is used for receiving key signals and zero crossing point detection signals and sending signals to the chopping unit.
2. The control circuit based on single live wire power carrier coding according to claim 1, wherein the chopper unit includes a chopper circuit and a push-pull circuit, the chopper circuit is electrically connected to a live wire of an alternating current line, the chopper circuit is electrically connected to the push-pull circuit, the push-pull circuit is electrically connected to the control unit, the push-pull circuit is configured to receive a signal sent by the control unit and send the signal to the chopper circuit, and the chopper circuit chops the alternating current signal according to the received signal.
3. The single-live line power carrier coding-based control circuit according to claim 2, wherein the chopper circuit comprises a rectifier bridge and a MOS (metal oxide semiconductor) transistor; the second pin and the third pin of the rectifier bridge are electrically connected with a live wire of an alternating current circuit, the first pin of the rectifier bridge is electrically connected with the second pin of the MOS tube, the fourth pin of the rectifier bridge and the third pin of the MOS tube are grounded, and the first pin of the MOS tube is electrically connected with the push-pull circuit.
4. The control circuit based on single live wire power carrier coding according to claim 3, wherein the push-pull circuit comprises a resistor R21, a triode Q4, a triode Q3, a first optocoupler, a capacitor C9, a resistor R22 and a resistor R23;
the low-voltage direct current conversion unit with the one end of resistance R21, the fourth pin of first opto-coupler and electric capacity C9's one end electricity is connected, resistance R21's the other end with triode Q4's collection third pin electricity is connected, triode Q4's second pin with triode Q3's second pin and MOS pipe's first pin electricity is connected, triode Q3's third pin ground connection, triode Q4's first pin triode Q3 and resistance R22's one end with the third pin electricity of first opto-coupler is connected, resistance R22's other end ground connection, electric capacity C9's other end ground connection, the first pin of first opto-coupler with resistance R23's one end electricity is connected, resistance R23's the other end with the control unit electricity is connected, the second pin ground connection of first opto-coupler.
5. The control circuit based on single live wire power carrier coding according to claim 3, wherein the zero-crossing detection unit comprises a resistor R10, a resistor R11, a capacitor C7, a resistor R15, a resistor R16, a resistor R12, a resistor R14, an operational amplifier, a resistor R18, a diode D8, a resistor R20 and a second optical coupler;
the one end of resistance R10 is connected with the live wire electricity of alternating current circuit, the other end of resistance R10 with the one end electricity of resistance R11 is connected, the other end of resistance R11 with the one end of resistance R15, the one end of resistance R18 and the first pin electricity of operational amplifier are connected, the other end of resistance R15 with low pressure direct current conversion unit the one end of electric capacity C7 and the one end electricity of resistance R16 are connected, the other end ground connection of electric capacity C7, the other end of resistance R16 with the one end of resistance R14 and the third pin electricity of operational amplifier is connected, the other end of resistance R14 with the one end electricity of resistance R12 is connected, the other end of resistance R12 and the third pin electricity of rectifier bridge are connected with the live wire electricity of alternating current circuit, the fourth pin of operational amplifier with the one end of resistance R20 and the negative pole end electricity of diode D8 are connected, the other end of resistance R20 with the first pin electricity of second pin electricity is connected, the second pin ground connection of second opto-coupler, the fourth pin of second opto-coupler control unit electricity is connected, the second pin of second opto-coupler is connected with the second ground connection operational amplifier, the second pin electricity is connected with the second opto-circuit ground connection of opto-coupler unit.
6. The control circuit according to claim 5, wherein the operational amplifier is of type LM321.
7. The control circuit based on the single live wire power carrier coding of claim 1, wherein the low-voltage direct-current conversion unit comprises a power taking circuit, a power chip, a connection circuit and a voltage reduction circuit, one end of the power taking circuit is electrically connected with a live wire of an alternating-current line, and the other end of the power taking circuit is electrically connected with the power chip; one end of the connecting circuit is electrically connected with the power supply chip, and the other end of the connecting circuit is electrically connected with the zero-crossing detection unit; one end of the voltage reduction circuit is electrically connected with the power chip, and the other end of the voltage reduction circuit is electrically connected with the control unit.
8. The control circuit based on single-live wire power carrier coding of claim 7, wherein a chip model of the power supply chip is BP2535.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223473094.3U CN218829631U (en) | 2022-12-23 | 2022-12-23 | Control circuit based on single live wire power carrier encoding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223473094.3U CN218829631U (en) | 2022-12-23 | 2022-12-23 | Control circuit based on single live wire power carrier encoding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218829631U true CN218829631U (en) | 2023-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223473094.3U Active CN218829631U (en) | 2022-12-23 | 2022-12-23 | Control circuit based on single live wire power carrier encoding |
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| Country | Link |
|---|---|
| CN (1) | CN218829631U (en) |
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2022
- 2022-12-23 CN CN202223473094.3U patent/CN218829631U/en active Active
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