CN217642834U - Single live wire power supply circuit and intelligent switch panel - Google Patents
Single live wire power supply circuit and intelligent switch panel Download PDFInfo
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- CN217642834U CN217642834U CN202220341275.1U CN202220341275U CN217642834U CN 217642834 U CN217642834 U CN 217642834U CN 202220341275 U CN202220341275 U CN 202220341275U CN 217642834 U CN217642834 U CN 217642834U
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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 embodiment of the utility model discloses a single live wire power supply circuit and intelligent switch panel, the single live wire power supply circuit is connected with the display screen of the intelligent switch panel, and the first power supply voltage is output to the display screen through the interface module after the alternating current-direct current conversion is carried out on the mains voltage on the live wire through the first power supply module; receiving a lamp opening instruction or a lamp closing instruction through an interface module and transmitting the lamp opening instruction or the lamp closing instruction to a first power supply module; the first power supply module is used for controlling the second power supply module to be disconnected with the line between the live wires when receiving a lamp closing instruction; when a lamp opening instruction is received, controlling a circuit between a second power supply module and a live wire to be closed; when the second power supply module is connected with the live wire, the alternating current and direct current conversion is carried out on the mains supply voltage on the live wire, and then the second power supply voltage is output to the controlled lamp. The power-taking output of the single live wire is realized, two paths of power supply voltages can be output to supply power for the display screen and the lamp respectively without changing the original wiring, and the power supply installation cost of the intelligent switch panel is saved.
Description
Technical Field
The utility model relates to a flush mounting plate of switch technical field especially relates to a single live wire supply circuit and intelligent switch panel.
Background
Along with the popularization of intelligent house, more and more products based on box at the bottom of traditional flush mounting plate of switch are designed, and the product based on box development at the bottom of the flush mounting plate of switch is generally used for controlling lighting apparatus, and this kind of smart machine mainly adds circuit module and wireless module in with traditional switch box, lets traditional mechanical switch both can pass through wireless control also can pass through panel switch manual control.
At present, common intelligent lamp switches on the market exist in the form of a key on a switch panel on a wall, wherein the switch panel is mechanical and touch, and few intelligent switch panels with display screens exist.
Because only a live wire is arranged in a common panel bottom box, a single-live wire electricity-taking technology is usually adopted, but the power for taking electricity by the existing single-live wire electricity-taking scheme is very low, and the switch panel with the display screen cannot be powered, so the switch panel with the display screen is usually powered by a zero live wire. However, the zero-live wire power supply scheme conflicts with the existing indoor wiring, and the equipment to be installed with such zero-live wires needs to be transformed by a secondary circuit at the switch panel, so that the power supply installation cost of the intelligent switch panel is increased.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the embodiment of the utility model provides a single live wire supply circuit and intelligent switch panel aims at solving among the prior art too high problem of intelligent switch panel power supply installation cost.
A first aspect of the embodiments of the present invention provides a single live wire power supply circuit, which is connected to a display screen of an intelligent switch panel, and includes a first power supply module, a second power supply module, and an interface module; the first power supply module is connected with a live wire, an interface module and a second power supply module, the interface module is also connected with the display screen, and the second power supply module is also connected with a controlled lamp;
the first power supply module is used for outputting a first power supply voltage to the display screen through the interface module after alternating current-direct current conversion is carried out on the mains supply voltage on the live wire;
the interface module is used for receiving a lamp opening instruction or a lamp closing instruction and transmitting the lamp opening instruction or the lamp closing instruction to the first power supply module;
the first power supply module is further used for controlling the second power supply module to be disconnected with a live wire when the lamp closing instruction is received; when the lamp starting instruction is received, controlling a circuit between the second power supply module and a live wire to be closed;
and the second power supply module is used for converting alternating current and direct current of the mains supply voltage on the live wire and outputting a second power supply voltage to the controlled lamp when the second power supply module is connected with the live wire.
Optionally, the first power supply module includes a first rectifying unit, a first switching unit and a zero-crossing collecting unit, the first rectifying unit, the first switching unit and the zero-crossing collecting unit are all connected to the live wire, the first rectifying unit, the first switching unit and the zero-crossing collecting unit are also all connected to the interface module, and the first switching unit is also connected to the second power supply module;
the first rectifying unit is used for outputting a first power supply voltage to the display screen through the interface module after alternating current-direct current conversion is carried out on the mains supply voltage on the live wire;
the first switch unit is used for switching to an off state when receiving the lamp closing instruction and switching to a closed state when receiving the lamp opening instruction;
the zero-crossing acquisition unit is used for acquiring a zero-crossing signal of the mains voltage and transmitting the zero-crossing signal to the interface module.
Optionally, the second power supply module includes a second rectifying unit and a second switching unit, both the second rectifying unit and the second switching unit are connected to the first switching unit, and the second rectifying unit is further connected to the controlled lamp through the second switching unit;
the second rectifying unit is used for performing alternating-current and direct-current conversion on the mains supply voltage on the live wire and outputting a second power supply voltage to control the second switching unit to be switched on when the first switching unit is switched on; stopping outputting the second power supply voltage when the first switching unit is turned off to control the second switching unit to be turned off;
the second switch unit is used for outputting the second power supply voltage to the controlled lamp when in a closed state.
Optionally, the first rectifying unit includes a first resistor, a first diode, a second diode, a first capacitor, a second capacitor, a third capacitor, a first TVS tube, and a first power chip;
one end of the first resistor is connected with a live wire outlet end and a 1 st pin of the first power supply chip, and the other end of the first resistor is connected with the second switch unit and the cathode of the first diode; the anode of the first diode is connected with the cathode of the second diode; the anode of the second diode is connected with the No. 2 pin of the first power supply chip; a 4 th pin of the first power supply chip is a first power supply voltage output end, and the 4 th pin of the first power supply chip is connected with one end of the first capacitor, the anode of the second capacitor, the anode of the third capacitor and the cathode of the first TVS tube; the 3 rd pin of the first power chip, the other end of the first capacitor, the cathode of the second capacitor, the cathode of the third capacitor and the anode of the first TVS tube are all grounded.
Optionally, the first switch unit includes a first fuse, a third diode, a fourth capacitor, a fifth capacitor, a second resistor, a third resistor, a first relay, and an MOS transistor;
one end of the first fuse is connected with a live wire incoming end, and the other end of the first fuse is connected with the other end of the first resistor and the anode of the third diode; the negative electrode of the third diode is connected with the first normally open contact of the first relay; a second normally open contact of the first relay is connected with a live wire outlet end and a second power supply module, and a first coil end of the first relay is connected with the first power supply voltage output end, one end of the fourth capacitor and the negative electrode of the fourth diode; the second coil end of the first relay is connected with the anode of the fourth diode and the drain electrode of the MOS tube; the grid electrode of the MOS tube is connected with one end of the second resistor, one end of the third resistor and one end of the fifth capacitor; the other end of the second resistor is connected with the interface module; and the source electrode of the MOS tube, the other end of the fourth capacitor, the other end of the fifth capacitor and the other end of the third resistor are all grounded.
Optionally, the zero-crossing acquisition unit includes a fifth diode, a sixth diode, a seventh diode, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, and an optocoupler;
the anode of the fifth diode is connected with a live wire outlet end, and the cathode of the fifth diode is connected with the anode of the sixth diode; the negative electrode of the sixth diode is sequentially connected with the fourth resistor, the fifth resistor and the sixth resistor in series and then connected with the negative electrode of the seventh diode and the No. 1 pin of the optocoupler; the anode of the seventh diode is connected with the other end of the first fuse and the No. 2 pin of the optocoupler; the 3 rd pin of the optical coupler is grounded, and the 4 th pin of the optical coupler is connected with the interface module and is also connected with the first power supply voltage output end through the seventh resistor.
Optionally, the interface module includes a second TVS tube, a third TVS tube, a fourth TVS tube, a fifth TVS tube, and a needle arranging base;
the negative pole of second TVS pipe is connected the 8 th foot of row needle file with the 4 th foot of opto-coupler, the negative pole of third TVS pipe is connected the 7 th foot of row needle file with the other end of second resistance, the negative pole of fourth TVS pipe is connected the 5 th foot of row needle file, the negative pole of fifth TVS pipe is connected the 1 st foot, the 3 rd foot of row needle file with first supply voltage output.
Optionally, the second rectifying unit includes an eighth diode, a ninth diode, a twelfth diode, an eleventh diode, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a first inductor, a second inductor, and a second power chip;
the anode of the eighth diode is connected with the second switch unit, and the cathode of the eighth diode is connected with one end of the first inductor; the other end of the first inductor is connected with the anode of the sixth capacitor, and a pin 7 and a pin 8 of the second power supply chip; one end of the seventh capacitor is connected with the 4 th pin of the second power supply chip and the cathode of the ninth diode, and the other end of the seventh capacitor is connected with the cathode of the twelfth pole tube, one end of the second inductor and the 1 st pin and the 2 nd pin of the second power supply chip; the other end of the second inductor is connected with the anode of the eighth capacitor, one end of the ninth capacitor, the cathode of the eleventh diode, the anode of the ninth diode and the second switch unit; and the cathode of the sixth capacitor, the anode of the twelfth diode, the cathode of the eighth capacitor, the other end of the ninth capacitor and the anode of the eleventh diode are all grounded.
Optionally, the second switch unit includes a second fuse, an eighth resistor, a ninth resistor, a twelfth diode, a thirteenth diode, a tenth capacitor, an eleventh capacitor, and a second relay;
one end of the second fuse is connected with the first switch unit, and the other end of the second fuse is connected with the anode of the twelfth diode, the cathode of the thirteenth diode, the anode of the eighth diode and one end of the eighth resistor; the negative electrode of the twelfth diode is connected with the positive electrode of the tenth capacitor, the positive electrode of the eleventh capacitor, one end of the ninth resistor and the second normally-open contact of the second relay; a first normally open contact of the second relay is connected with the controlled lamp, a first coil end of the second relay is connected with the other end of the second inductor, and a second coil end of the second relay is grounded; the anode of the thirteenth diode, the other end of the eighth resistor, the other end of the ninth resistor, the cathode of the tenth capacitor and the cathode of the eleventh capacitor are all grounded.
The embodiment of the utility model provides an intelligence switch panel is provided in the second aspect, is connected with controlled lamps and lanterns, intelligence switch panel includes the display screen, intelligence switch panel still includes as above single live wire supply circuit, single live wire supply circuit is used for getting the electricity and do respectively from the live wire display screen and the power supply of controlled lamps and lanterns.
In the technical solution provided by the embodiment of the present invention, the single live wire power supply circuit is connected to the display screen of the intelligent switch panel, and the first power supply module performs ac/dc conversion on the mains voltage on the live wire and outputs the first power supply voltage to the display screen via the interface module; receiving a lamp opening instruction or a lamp closing instruction through an interface module and transmitting the lamp opening instruction or the lamp closing instruction to a first power supply module; the first power supply module is used for controlling the second power supply module to be disconnected with the line between the live wires when receiving a lamp closing instruction; when a lamp opening instruction is received, controlling a circuit between a second power supply module and a live wire to be closed; when the second power supply module is connected with the live wire, the alternating current and direct current conversion is carried out on the mains supply voltage on the live wire, and then the second power supply voltage is output to the controlled lamp. The embodiment of the utility model provides a realize getting of single live wire output, need not to change original wiring and can export two tunnel supply voltage and supply power for display screen and lamps and lanterns respectively, practice thrift intelligent flush mounting plate's power supply installation cost.
Drawings
Fig. 1 is a block diagram of a single live wire power supply circuit according to an embodiment of the present invention;
fig. 2 is a circuit diagram of a first rectifying unit and a first switching unit in a single live wire power supply circuit provided by an embodiment of the present invention;
fig. 3 is a circuit diagram of a zero-crossing acquisition unit in a single live wire power supply circuit according to an embodiment of the present invention;
fig. 4 is a circuit diagram of an interface module in a single-live-wire power supply circuit according to an embodiment of the present invention;
fig. 5 is a circuit diagram of a second power supply module in the single live wire power supply circuit provided by the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a single live wire power supply circuit is connected with a display screen of an intelligent switch panel, which includes a panel portion and a lamp holder portion, wherein the panel portion is installed on a wall panel bottom box, the wall panel bottom box is compatible with a national standard bottom box, an european standard bottom box, a U-standard bottom box, etc., the panel portion includes a first power supply module 10 and an interface module 30, and the lamp holder portion includes a second power supply module 20, wherein the first power supply module 10 is connected with a live wire, the interface module 30 and the second power supply module 20, the interface module 30 is further connected with the display screen, and the second power supply module 20 is further connected with a controlled lamp.
The first power supply module 10 is configured to output a first power supply voltage to the display screen through the interface module 30 after ac-dc conversion is performed on the mains voltage on the live wire; the interface module 30 is configured to receive a lamp turning-on instruction or a lamp turning-off instruction and transmit the lamp turning-on instruction or the lamp turning-off instruction to the first power supply module 10; the first power supply module 10 is further configured to control the second power supply module 20 to disconnect from the live wire when the lamp turning-off instruction is received; when the lamp starting instruction is received, controlling the circuit between the second power supply module 20 and the live wire to be closed; the second power supply module 20 is configured to, when connected to the live wire, output a second power supply voltage to the controlled lamp after performing ac-dc conversion on the mains voltage on the live wire.
In this embodiment, when the circuit is powered on, the first power supply module 10 of the panel portion outputs the first power supply voltage to the interface module 30, the first power supply voltage is transmitted to the external display screen through the interface module 30 to supply power, and the interface module 30 receives a lamp opening instruction or a lamp closing instruction input by a user to implement a flexible lamp switch, specifically, when the interface module 30 receives the lamp opening instruction and transmits the lamp opening instruction to the first power supply module 10, the first power supply module 10 controls the circuit between the second power supply module 20 and the live wire to be closed, so that the second power supply module 20 takes power from the live wire to supply power to the controlled lamp, and when the interface module 30 receives the lamp closing instruction and transmits the lamp closing instruction to the first power supply module 10, the first power supply module 10 controls the circuit between the second power supply module 20 and the live wire to be disconnected, so that the second power supply module 20 stops taking power output, and further controls the controlled lamp to be turned off, therefore, the present embodiment implements the power taking output of a single live wire through a two-wire power supply mode, and can output two paths of the two paths of power supply voltage to the display screen and the lamp without changing the original wiring, and saving the power supply cost of the intelligent switch.
In one embodiment, the first power supply module 10 includes a first rectifying unit 101, a first switching unit 102, and a zero-crossing collecting unit 103, where the first rectifying unit 101, the first switching unit 102, and the zero-crossing collecting unit 103 are all connected to the live wire, the first rectifying unit 101, the first switching unit 102, and the zero-crossing collecting unit 103 are all further connected to the interface module 30, and the first switching unit 102 is further connected to the second power supply module 20; the first rectifying unit 101 is configured to output a first power supply voltage to the display screen through the interface module 30 after ac-dc conversion is performed on the mains voltage on the live wire; the first switch unit 102 is configured to switch to an off state when receiving the lamp turning-off instruction, and switch to a on state when receiving the lamp turning-on instruction; the zero-crossing collecting unit 103 is configured to collect a zero-crossing signal of the mains voltage and transmit the zero-crossing signal to the interface module 30.
In this embodiment, the first rectifying unit 101 obtains power from the live wire and converts the power to output a corresponding first power supply voltage to the interface module 30 to supply power to the display screen connected to the interface module 30, and preferably, the first rectifying unit 101 further outputs the first power supply voltage to the first switching unit 102 and the zero-crossing collecting unit 103 as working units thereof, so that circuit devices are saved and stable operation of the circuit is ensured.
After the display screen is powered to normally work, a user can input a corresponding lamp control instruction in a touch screen mode, for example, when a lamp closing instruction is input, the first switch unit 102 is switched to the off state, when a lamp opening instruction is input, the first switch unit 102 is switched to the on state, and the first switch unit 102 is connected between the first power supply module 10 and the live wire.
In one embodiment, the second power supply module 20 includes a second rectification unit 201 and a second switching unit 202, the second rectification unit 201 and the second switching unit 202 are both connected to the first switching unit 102, and the second rectification unit 201 is further connected to the controlled lamp through the second switching unit 202; the second rectifying unit 201 is configured to, when the first switching unit 102 is closed, output a second supply voltage after performing ac-dc conversion on the mains voltage on the live wire to control the second switching unit 202 to be closed; stopping outputting the second power supply voltage when the first switching unit 102 is turned off to control the second switching unit 202 to be turned off; the second switch unit 202 is configured to output the second power supply voltage to the controlled lamp when in a closed state.
In this embodiment, only when the user inputs the lamp turning-on instruction to control the first switch unit 102 to be switched to the on state, the second rectification unit 201 can take power from the live wire, rectify and convert the mains voltage into the second supply voltage, at this time, the second switch voltage is driven to be switched on to transmit the second supply voltage to the controlled lamp for power supply, and when the user inputs the lamp turning-off instruction to control the first switch unit 102 to be switched to the off state, the second rectification unit 201 is not powered on at this time, the second supply voltage is stopped from being output to disconnect the second switch unit 202, the second switch unit 202 is further disconnected while the second rectification unit 201 is powered off, so that the physical turning-off of the lamp is realized, no potential safety hazard exists, no weak current exists in the lamp after the lamp is turned off, no minimum load limitation exists, the problem of abnormal flashing or the abnormal turning-off after the lamp is turned off is avoided, and the safety of the lamp power supply is improved.
In one embodiment, as shown in fig. 2, the first rectifying unit 101 includes a first resistor R1, a first diode D1, a second diode D2, a first capacitor C1, a second capacitor C2, a third capacitor C3, a first TVS tube Z1, and a first power chip U1;
one end of the first resistor R1 is connected to a live wire outlet terminal LOUT1 and a 1 st pin of the first power chip U1, and the other end of the first resistor R1 is connected to the second switch unit 202 and a negative electrode of the first diode D1; the anode of the first diode D1 is connected with the cathode of the second diode D2; the anode of the second diode D2 is connected with the No. 2 pin of the first power supply chip U1; a 4 th pin of the first power supply chip U1 is a first power supply voltage output end, and the 4 th pin of the first power supply chip U1 is connected to one end of the first capacitor C1, the anode of the second capacitor C2, the anode of the third capacitor C3, and the cathode of the first TVS tube Z1; the 3 rd pin of the first power chip U1, the other end of the first capacitor C1, the cathode of the second capacitor C2, the cathode of the third capacitor C3, and the anode of the first TVS tube Z1 are all grounded.
In this embodiment, the first resistor R1 is a varistor, and is used for overvoltage protection, because the input of the first rectifying unit 101 is mains voltage, overvoltage problems such as mains grid fluctuation and lightning stroke need to be considered, and a varistor with a model number of 10D471K may be adopted; the first diode D1 and the second diode D2 are rectifier diodes for rectifying the input ac into dc; the first power supply chip U1 is an AC-DC isolation power supply module, can adopt a power supply module with the model number TP20AC220S05W, inputs 220V, outputs 5V and has the maximum output power of 20W, and can provide a high-power supply for a display screen of an intelligent switch panel to ensure the stable work of the intelligent switch panel. The first capacitor C1, the second capacitor C2 and the third capacitor C3 are output filter capacitors, wherein the second capacitor C2 and the third capacitor C3 need to be at least larger than 1000uF, an electrolytic capacitor is adopted, if the capacitance value is lower than the capacitance value, the power output is unstable, and the first TVS tube Z1 is used for inhibiting the surge of the power output and protecting a rear-stage load from being damaged by the surge.
In one embodiment, the first switching unit 102 includes a first fuse F1, a third diode D3, a fourth diode D4, a fourth capacitor C4, a fifth capacitor C5, a second resistor R2, a third resistor R3, a first relay K1, and a MOS transistor Q1; one end of the first fuse F1 is connected with a live wire incoming end, and the other end of the first fuse F1 is connected with the other end of the first resistor R1 and the anode of the third diode D3; the negative electrode of the third diode D3 is connected with the first normally open contact of the first relay K1; a second normally open contact of the first relay K1 is connected to a live wire outlet terminal and a second power supply module 20, and a first coil terminal of the first relay K1 is connected to the first power supply voltage output terminal, one end of the fourth capacitor C4, and a negative electrode of the fourth diode D4; the second coil end of the first relay K1 is connected with the anode of the fourth diode D4 and the drain of the MOS transistor Q1; the grid electrode of the MOS transistor Q1 is connected with one end of the second resistor R2, one end of the third resistor R3 and one end of the fifth capacitor C5; the other end of the second resistor R2 is connected to the interface module 30; the source electrode of the MOS transistor Q1, the other end of the fourth capacitor C4, the other end of the fifth capacitor C5 and the other end of the third resistor R3 are all grounded.
In the embodiment, 1J1 and 1J2 are wiring copper columns, LIN is a live wire inlet wire, LOUT1 is a live wire outlet wire, and is connected with a rear-stage load, and the first fuse F1 is used for avoiding potential safety hazards caused by short circuit when a rear-stage circuit or a load outlet wire is damaged; the third triode is a rectifier diode and is used for intercepting 220V alternating current mains supply half-wave to supply the first power supply voltage, and a half-wave electricity taking mode is adopted instead of a wave interception electricity taking mode, so that the problems of conduction and radiation interference are almost avoided.
A fourth diode D4, a fourth capacitor C4, a fifth capacitor C5, a second resistor R2, a third resistor R3, a first relay K1 and an MOS (metal oxide semiconductor) tube Q1 form a switch main body circuit of a first switch voltage, when a SW1 inputs a high level, the first relay K1 is closed, a rear-stage load is electrified, and a lamp is on; when SW1 inputs low level, the first relay K1 is switched off, the rear stage load is switched off, and the lamp is turned off. The fourth diode D4 is a freewheeling diode for protecting and avoiding the damage of the induced voltage generated when the MOS turns off the first relay K1, the fourth capacitor C4 is a power supply filtering capacitor, and the fifth capacitor C5, the second resistor R2, the third resistor R3 and the MOS transistor Q1 are driving circuits of the first relay K1.
In one embodiment, as shown in fig. 3, the zero-cross collection unit 103 includes a fifth diode D5, a sixth diode D6, a seventh diode D7, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, and an optocoupler N1;
the anode of the fifth diode D5 is connected to the live wire outlet terminal, and the cathode of the fifth diode D5 is connected to the anode of the sixth diode D6; the negative electrode of the sixth diode D6 is sequentially connected in series with the fourth resistor R4, the fifth resistor R5 and the sixth resistor R6, and then connected with the negative electrode of the seventh diode D7 and the 1 st pin of the optocoupler N1; the anode of the seventh diode D7 is connected to the other end of the first fuse F1 and the 2 nd pin of the optocoupler N1; the 3 rd pin of the optocoupler N1 is grounded, and the 4 th pin of the optocoupler N1 is connected with the interface module 30 and the first power supply voltage output end through the seventh resistor R7.
In this embodiment, the fifth diode D5 and the sixth diode D6 are rectifier diodes, and convert an ac signal into a dc driving post-stage circuit, the fourth resistor R4, the fifth resistor R5, and the sixth resistor R6 are current-limiting resistors, and output to the post-stage optocoupler N1, the seventh diode D7 clamp diode, and protect the optocoupler N1 from overvoltage breakdown damage under a reverse voltage, the seventh resistor R7 is an output pull-up resistor, outputs a signal SW1_ S to the interface module 30, and the zero-cross collection unit 103 outputs a low level when the LOUT1 has a voltage during a working process. When the LOUT1 is at the alternating current zero position, the SW1_ S outputs a high pulse to realize the acquisition and feedback of the zero-crossing signal, so that the intelligent switch panel can conveniently carry out power adjustment or synchronous control and the like according to the received zero-crossing signal.
In one embodiment, as shown in fig. 4, the interface module 30 includes a second TVS tube Z2, a third TVS tube Z3, a fourth TVS tube Z4, a fifth TVS tube Z5, and a needle hub J1; second TVS pipe Z2's negative pole is connected arrange needle file J1's 8 th foot with opto-coupler N1's 4 th foot, third TVS pipe Z3's negative pole is connected arrange needle file J1's 7 th foot with second resistance R2's the other end, fourth TVS pipe Z4's negative pole is connected arrange needle file J1's 5 th foot, fifth TVS pipe Z5's negative pole is connected arrange needle file J1's 1 st foot, 3 rd foot with first supply voltage output.
In this embodiment, an external tablet computer with a display screen is connected through a pin header J1, the tablet computer controls a lamp switch through a SW1 signal, VDD-5V is output to supply power to the tablet computer, and a second TVS tube Z2, a third TVS tube Z3, a fourth TVS tube Z4, and a fifth TVS tube Z5 are input electrostatic protection tubes, so that the module is prevented from being damaged when the tablet computer is externally connected.
In one embodiment, as shown in fig. 5, the second rectification unit 201 includes an eighth diode D8, a ninth diode D9, a twelfth diode D10, an eleventh diode D11, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, a first inductor L1, a second inductor L2, and a second power chip U2; the anode of the eighth diode D8 is connected to the second switching unit 202, and the cathode of the eighth diode D8 is connected to one end of the first inductor L1; the other end of the first inductor L1 is connected with the anode of the sixth capacitor C6, and the 7 th pin and the 8 th pin of the second power supply chip U2; one end of the seventh capacitor C7 is connected to the 4 th pin of the second power chip U2 and the cathode of the ninth diode D9, and the other end of the seventh capacitor C7 is connected to the cathode of the twelfth diode D10, one end of the second inductor L2, and the 1 st pin and the 2 nd pin of the second power chip U2; the other end of the second inductor L2 is connected to the anode of the eighth capacitor C8, one end of the ninth capacitor C9, the cathode of the eleventh diode D11, the anode of the ninth diode D9, and the second switch unit 202; the cathode of the sixth capacitor C6, the anode of the twelfth diode D10, the cathode of the eighth capacitor C8, the other end of the ninth capacitor C9, and the anode of the eleventh diode D11 are all grounded.
In this embodiment, the eighth diode D8 is a rectifier diode, and the first inductor L1 and the sixth capacitor C6 are front-end LC filter circuits, and are configured to stabilize an input voltage and remove interference; the second power supply chip U2 is an AC-DC power supply chip, and the model is PN8034C; the seventh capacitor C7 is a power supply filter capacitor of the second power supply chip U2; the ninth diode D9 is an input diode of the second power supply chip U2; the second inductor L2, the eighth capacitor C8, the ninth capacitor C9, the twelfth diode D10 and the eleventh diode D11 constitute a power output filter circuit for stabilizing an output voltage.
In one embodiment, the second switching unit 202 includes a second fuse F2, an eighth resistor R8, a ninth resistor R9, a twelfth diode D12, a thirteenth diode D13, a tenth capacitor C10, an eleventh capacitor C11, and a second relay K2; one end of the second fuse F2 is connected to the first switch unit 102, specifically to a second normally open contact of the first relay K1, and the other end of the second fuse F2 is connected to the anode of the twelfth diode D12, the cathode of the thirteenth diode D13, the anode of the eighth diode D8, and one end of the eighth resistor R8; the cathode of the twelfth diode D12 is connected to the anode of the tenth capacitor C10, the anode of the eleventh capacitor C11, one end of the ninth resistor R9, and the second normally open contact of the second relay K2; a first normally open contact of the second relay K2 is connected with the controlled lamp, a first coil end of the second relay K2 is connected with the other end of the second inductor L2, and a second coil end of the second relay K2 is grounded; an anode of the thirteenth diode D13, the other end of the eighth resistor R8, the other end of the ninth resistor R9, a cathode of the tenth capacitor C10, and a cathode of the eleventh capacitor C11 are all grounded.
In this embodiment, L is a live wire connected to the panel part output, i.e., the second normally open contact of the first relay K1, and N is a zero line connected to the commercial power; 2J1, 2J2 and 2J3 are wiring copper cylinders and are power supply access and output ports; the twelfth diode D12 and the thirteenth diode D13 are rectifier diodes; the second fuse F2 plays a role in short circuit and overload protection; the eighth resistor R8 is a voltage dependent resistor and plays a role in overvoltage protection; the tenth capacitor C10 and the eleventh capacitor C11 are filter capacitors, and filter positive sine waves into stable direct currents; the ninth resistor R9 is a discharge resistor, and can rapidly discharge the electricity of the tenth capacitor C10 and the eleventh capacitor C11 when the input is turned off. The working process of the second power supply module 20 is when the L line is powered on, namely the first relay K1 is closed, the live wire is connected, the second power supply unit starts to output 12V voltage to drive the second relay K2 to be closed, and then the electricity is output to the LOUT, the LOUT is connected with an external load lamp, and then the lamp is lightened.
The upper surface the utility model provides an in the embodiment of the utility model single live wire supply circuit describe, it is following the utility model provides an in the embodiment of intelligent switch panel describe, the utility model provides an in the embodiment of intelligent switch panel an embodiment is connected with controlled lamps and lanterns, intelligent switch panel includes the display screen, intelligent switch panel still includes as above single live wire supply circuit, single live wire supply circuit is used for getting the electricity and do respectively from the live wire display screen and controlled lamps and lanterns power supply because the above has carried out detailed description to single live wire supply circuit, and this is not repeated.
To sum up, in the technical solution provided by the embodiment of the present invention, the single live wire power supply circuit is connected to the display screen of the intelligent switch panel, and the first power supply module performs ac/dc conversion on the mains voltage on the live wire and outputs the first power supply voltage to the display screen via the interface module; receiving a lamp opening instruction or a lamp closing instruction through an interface module and transmitting the lamp opening instruction or the lamp closing instruction to a first power supply module; the first power supply module is used for controlling the second power supply module to be disconnected with a live wire when receiving a lamp closing instruction; when a lamp opening instruction is received, controlling a circuit between a second power supply module and a live wire to be closed; when the second power supply module is connected with the live wire, the alternating current and direct current conversion is carried out on the mains supply voltage on the live wire, and then the second power supply voltage is output to the controlled lamp. The embodiment of the utility model provides a realize getting of single live wire output, need not to change original wiring and can export two tunnel supply voltage and supply power for display screen and lamps and lanterns respectively, practice thrift intelligent flush mounting plate's power supply installation cost.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A single live wire power supply circuit is connected with a display screen of an intelligent switch panel and is characterized by comprising a first power supply module, a second power supply module and an interface module; the first power supply module is connected with a live wire, an interface module and a second power supply module, the interface module is also connected with the display screen, and the second power supply module is also connected with a controlled lamp;
the first power supply module is used for outputting a first power supply voltage to the display screen through the interface module after alternating current-direct current conversion is carried out on the mains supply voltage on the live wire;
the interface module is used for receiving a lamp opening instruction or a lamp closing instruction and transmitting the lamp opening instruction or the lamp closing instruction to the first power supply module;
the first power supply module is further used for controlling the second power supply module to be disconnected with a live wire when the lamp closing instruction is received; when the lamp starting instruction is received, controlling a circuit between the second power supply module and a live wire to be closed;
and the second power supply module is used for converting alternating current and direct current of the mains supply voltage on the live wire and outputting a second power supply voltage to the controlled lamp when the second power supply module is connected with the live wire.
2. The single live wire power supply circuit according to claim 1, wherein the first power supply module comprises a first rectifying unit, a first switching unit and a zero-crossing collecting unit, the first rectifying unit, the first switching unit and the zero-crossing collecting unit are all connected with the live wire, the first rectifying unit, the first switching unit and the zero-crossing collecting unit are all further connected with the interface module, and the first switching unit is further connected with the second power supply module;
the first rectifying unit is used for outputting a first power supply voltage to the display screen through the interface module after alternating current-direct current conversion is carried out on the mains supply voltage on the live wire;
the first switch unit is used for switching to an off state when receiving the lamp closing instruction and switching to a closed state when receiving the lamp opening instruction;
the zero-crossing acquisition unit is used for acquiring a zero-crossing signal of the mains voltage and transmitting the zero-crossing signal to the interface module.
3. The single hot wire power supply circuit according to claim 2, wherein the second power supply module comprises a second rectifying unit and a second switching unit, the second rectifying unit and the second switching unit are both connected to the first switching unit, and the second rectifying unit is further connected to the controlled lamp through the second switching unit;
the second rectifying unit is used for performing alternating-current and direct-current conversion on the mains supply voltage on the live wire and outputting a second power supply voltage to control the second switching unit to be switched on when the first switching unit is switched on; stopping outputting the second power supply voltage when the first switching unit is turned off to control the second switching unit to be turned off;
the second switch unit is used for outputting the second power supply voltage to the controlled lamp when in a closed state.
4. The single hot wire supply circuit of claim 3, wherein the first rectifying unit comprises a first resistor, a first diode, a second diode, a first capacitor, a second capacitor, a third capacitor, a first TVS tube and a first power chip;
one end of the first resistor is connected with a live wire outlet end and the 1 st pin of the first power supply chip, and the other end of the first resistor is connected with the second switch unit and the cathode of the first diode; the anode of the first diode is connected with the cathode of the second diode; the anode of the second diode is connected with the No. 2 pin of the first power supply chip; a 4 th pin of the first power supply chip is a first power supply voltage output end, and the 4 th pin of the first power supply chip is connected with one end of the first capacitor, the anode of the second capacitor, the anode of the third capacitor and the cathode of the first TVS tube; the 3 rd pin of the first power chip, the other end of the first capacitor, the cathode of the second capacitor, the cathode of the third capacitor and the anode of the first TVS tube are all grounded.
5. The single hot wire supply circuit according to claim 4, wherein the first switch unit comprises a first fuse, a third diode, a fourth capacitor, a fifth capacitor, a second resistor, a third resistor, a first relay and a MOS (metal oxide semiconductor) transistor;
one end of the first fuse is connected with a live wire incoming end, and the other end of the first fuse is connected with the other end of the first resistor and the anode of the third diode; the negative electrode of the third diode is connected with the first normally open contact of the first relay; a second normally open contact of the first relay is connected with a live wire outlet end and a second power supply module, and a first coil end of the first relay is connected with the first power supply voltage output end, one end of the fourth capacitor and the negative electrode of the fourth diode; the second coil end of the first relay is connected with the anode of the fourth diode and the drain electrode of the MOS tube; the grid electrode of the MOS tube is connected with one end of the second resistor, one end of the third resistor and one end of the fifth capacitor; the other end of the second resistor is connected with the interface module; and the source electrode of the MOS tube, the other end of the fourth capacitor, the other end of the fifth capacitor and the other end of the third resistor are all grounded.
6. The single live wire power supply circuit according to claim 5, wherein the zero-crossing collection unit comprises a fifth diode, a sixth diode, a seventh diode, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor and an optocoupler;
the anode of the fifth diode is connected with a live wire outlet end, and the cathode of the fifth diode is connected with the anode of the sixth diode; the negative electrode of the sixth diode is sequentially connected with the fourth resistor, the fifth resistor and the sixth resistor in series and then connected with the negative electrode of the seventh diode and the No. 1 pin of the optocoupler; the anode of the seventh diode is connected with the other end of the first fuse and the No. 2 pin of the optocoupler; the 3 rd pin of the optical coupler is grounded, and the 4 th pin of the optical coupler is connected with the interface module and is also connected with the first power supply voltage output end through the seventh resistor.
7. The single-live-wire power supply circuit of claim 6, wherein the interface module comprises a second TVS tube, a third TVS tube, a fourth TVS tube, a fifth TVS tube and a pin header;
the negative pole of second TVS pipe is connected arrange the 8 th foot of needle file with the 4 th foot of opto-coupler, the negative pole of third TVS pipe is connected arrange the 7 th foot of needle file with the other end of second resistance, the negative pole of fourth TVS pipe is connected arrange the 5 th foot of needle file, the negative pole of fifth TVS pipe is connected arrange the 1 st foot, the 3 rd foot of needle file with first supply voltage output.
8. The single hot wire supply circuit of claim 3, wherein the second rectifying unit comprises an eighth diode, a ninth diode, a twelfth diode, an eleventh diode, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a first inductor, a second inductor, and a second power chip;
the anode of the eighth diode is connected with the second switch unit, and the cathode of the eighth diode is connected with one end of the first inductor; the other end of the first inductor is connected with the anode of the sixth capacitor, and a pin 7 and a pin 8 of the second power supply chip; one end of the seventh capacitor is connected with the 4 th pin of the second power supply chip and the cathode of the ninth diode, and the other end of the seventh capacitor is connected with the cathode of the twelfth pole tube, one end of the second inductor and the 1 st pin and the 2 nd pin of the second power supply chip; the other end of the second inductor is connected with the anode of the eighth capacitor, one end of the ninth capacitor, the cathode of the eleventh diode, the anode of the ninth diode and the second switch unit; and the cathode of the sixth capacitor, the anode of the twelfth diode, the cathode of the eighth capacitor, the other end of the ninth capacitor and the anode of the eleventh diode are all grounded.
9. The single hot wire supply circuit of claim 8, wherein the second switching unit comprises a second fuse, an eighth resistor, a ninth resistor, a twelfth diode, a thirteenth diode, a tenth capacitor, an eleventh capacitor, and a second relay;
one end of the second fuse is connected with the first switch unit, and the other end of the second fuse is connected with the anode of the twelfth diode, the cathode of the thirteenth diode, the anode of the eighth diode and one end of the eighth resistor; the negative electrode of the twelfth diode is connected with the positive electrode of the tenth capacitor, the positive electrode of the eleventh capacitor, one end of the ninth resistor and the second normally-open contact of the second relay; a first normally open contact of the second relay is connected with the controlled lamp, a first coil end of the second relay is connected with the other end of the second inductor, and a second coil end of the second relay is grounded; the anode of the thirteenth diode, the other end of the eighth resistor, the other end of the ninth resistor, the cathode of the tenth capacitor and the cathode of the eleventh capacitor are all grounded.
10. An intelligent switch panel, connected with a controlled lamp, the intelligent switch panel comprising a display screen, characterized in that the intelligent switch panel further comprises a single live wire power supply circuit according to any one of claims 1-9, the single live wire power supply circuit being adapted to take power from the live wire and to supply power to the display screen and the controlled lamp, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220341275.1U CN217642834U (en) | 2022-02-21 | 2022-02-21 | Single live wire power supply circuit and intelligent switch panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220341275.1U CN217642834U (en) | 2022-02-21 | 2022-02-21 | Single live wire power supply circuit and intelligent switch panel |
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| Publication Number | Publication Date |
|---|---|
| CN217642834U true CN217642834U (en) | 2022-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220341275.1U Active CN217642834U (en) | 2022-02-21 | 2022-02-21 | Single live wire power supply circuit and intelligent switch panel |
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| Country | Link |
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| CN (1) | CN217642834U (en) |
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- 2022-02-21 CN CN202220341275.1U patent/CN217642834U/en active Active
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