CN116847507A

CN116847507A - Single live wire SCR type wall double-control intelligent and touch switch circuit

Info

Publication number: CN116847507A
Application number: CN202110199319.1A
Authority: CN
Inventors: 周文俊; 谢作敏; 刘希真; 黄南翔
Original assignee: Wenzhou Business College
Current assignee: Wenzhou Business College
Priority date: 2021-02-22
Filing date: 2021-02-22
Publication date: 2023-10-03

Abstract

The invention relates to a single-live wire SCR type wall double-control intelligent and touch switch circuit which comprises at least one main loop, a main thyristor VT1, a main switch driving circuit, a direct-current voltage-stabilizing power supply circuit and an intelligent touch control circuit, wherein the main thyristor VT1 is arranged in the main loop in a series mode. According to the invention, the main switch driving circuit is provided with the lamp-free empty unlocking lock circuit unit and the live wire open-circuit protection circuit unit, so that the situation that the switch is turned on under the condition that one of the double-control intelligent switches has poor contact or broken wires of the live wire or the air switch trips due to overload, and electronic elements on the PCB are damaged due to overvoltage is avoided; in addition, the technical defect that the wireless single-channel double-control function cannot be realized when the existing single-live-wire double-control intelligent switch lacks a zero line is thoroughly solved by adopting a double-control line one-to-one connection double-control mode, the control mode is simple, the compatibility is strong, the overall cost of a product is greatly reduced, and compared with the wireless double-control switch, the anti-interference capability of a circuit is greatly improved, and the work is more reliable.

Description

Single live wire SCR type wall double-control intelligent and touch switch circuit

Technical Field

The invention relates to a wall touch switch control circuit, in particular to a single-live wire SCR type wall double-control intelligent and touch switch circuit.

Background

Along with the continuous development of scientific technology, the living standard is continuously improved, the quality requirement on daily life is also continuously improved, and in order to be convenient to use, people can use the double-control switch in many occasions, namely control the same lamp on two different switches, namely a single-channel double-control switch, and can also control two lamps or three lamps or a plurality of lamps on two different switches, namely a two-channel or three-channel or multi-channel double-control switch. At present, two types of double-control switches have two different forms, one type is a wired double-control switch, the type of switch is usually connected with a live wire, a lamp cap wire and a corresponding number of double-control wires (a single-path double-control wire, two double-path double-control wires and three double-path double-control wires), the two switches are connected through the control wires and the corresponding internal connecting wires to achieve the double-control purpose, and the wired double-control switch has the advantages of simple structure, low cost, high working reliability and interference resistance, but also has the defect of troublesome wiring; the other type is an electronic double-control switch, and the defects that wiring is needed between the two switches are avoided in a wireless communication mode, so that the installation and the use are convenient, but the existing single-live wire double-control intelligent switch also has the following defects in common: 1. if the live wire at one end of the double-control intelligent switch is in poor contact or broken wire or the air switch trips due to overload, at the moment, if the switch is started once, an electronic element on a PCB (printed circuit board) is damaged due to overvoltage, and even if the PCT element is used for protection, the double-control intelligent switch is still unreliable for high power; 2. when the load (lamp) is not connected, the switch is turned on, and the dead halt and the lamp lighting phenomena are easy to occur due to the fact that the single-path double-control intelligent switch is not charged by a power supply; 3. in order to avoid wiring work, most of the existing single-channel double-control intelligent switches adopt wireless control modes like 433 remote controllers or random stickers, but the existing wireless remote control switch circuits still have a plurality of defects: firstly, the reliability and the anti-interference performance are far lower than those of a wired control switch; secondly, after a period of use, the battery used as a working power supply needs to be replaced, which is very troublesome; thirdly, because the structure of each control switch is the same, the control signal sent by each control switch can be judged by coding, and the circuit design is complex, so that the code matching is needed before the use, the common user is not easy to grasp, and professional personnel are needed to install the code matching; 4. when mobile phone APP or Bluetooth voice control is adopted, wireless double control cannot be realized when the single-way intelligent switch does not have a zero line N; 5. the common touch switch is not compatible with the intelligent switch, so that mass production is not facilitated; 6. the circuit is complex and high in cost, and civilian realization is difficult.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the single-live wire SCR type wall double-control intelligent and touch switch circuit which has the advantages of simple structure, low cost, strong anti-interference capability and no need of rewiring.

The invention provides a single-live wire SCR type wall double-control intelligent and touch switch circuit, which comprises at least one main loop, a main thyristor VT1 serving as a main switch element, a main switch driving circuit, a direct-current stabilized voltage supply circuit and an intelligent touch control circuit, wherein the main switch element is a bidirectional thyristor, two ends of the main loop are respectively provided with a live wire connecting end L connected with a live wire and a load connecting end L1 connected with a load, the direct-current stabilized voltage supply circuit provides working power for each unit circuit, and the main switch driving circuit controls the on-off of the main switch element; the main switch driving circuit comprises a trigger branch and a driving branch for controlling the on-off of the trigger branch, and is characterized in that: the trigger branch is a serial branch comprising a trigger photoelectric coupler OP1 output end and a voltage stabilizing diode VZ2, two ends of the trigger branch are respectively connected to a load connecting end L1 and a G electrode of the main thyristor VT1, the drive branch is a serial branch comprising a trigger photoelectric coupler OP1 input end and a trigger switch triode V4, and two ends of the drive branch are respectively connected to two ends of an anode and a cathode of a working power supply; the intelligent touch control circuit comprises an intelligent comprehensive control unit, a Bluetooth or zigbee module U4 and a comprehensive control output unit; the intelligent comprehensive control unit consists of a singlechip U3 and peripheral elements thereof, and is provided with one or more touch input ends, a corresponding number of synchronous pulse type touch output ends G1, one or more intelligent double-control on-off control input ends K1 and a corresponding number of intelligent control output ends U01, wherein the intelligent control output ends U01 are of a locking type; the touch output end G1 is connected with a wired input end K11 of the Bluetooth or zigbee module U4; the comprehensive control output unit comprises one or more sub-control output units, wherein the sub-control output units comprise a sub-control MOS tube V13, a lower bias resistor R26, a first input capacitor C21, a first input diode VD16, a second input capacitor C24, a second input diode VD19 and a second isolation diode VD22; the drain electrode of the sub-control MOS tube V13 is connected with the positive electrode of the second isolation diode VD22, the source electrode of the sub-control MOS tube V13 is connected with the negative electrode of the direct current stabilized power supply, the negative electrode of the second isolation diode VD22 is connected with the positive input end of the direct current stabilized power supply, the lower bias resistor R26 is connected in parallel between the grid electrode of the sub-control MOS tube V13 and the negative electrode of the direct current stabilized power supply, and one end of the first input capacitor C21 and the negative electrode end of the first input diode VD16 are connected with the grid electrode of the sub-control MOS tube V13; the positive electrode of the second input diode VD19 is connected with the upper end of the second input capacitor C24, the negative electrode of the second input diode VD19 and the lower end of the second input capacitor C24 are connected on the drain electrode and the source electrode of the sub-control MOS tube V13 in parallel, and the connection midpoint of the second input diode VD19 and the second input capacitor C24 is connected with the intelligent double-control on-off control input end K1; the output end G4 of the Bluetooth or zigbee module U4 is connected with the positive electrode of the first input diode VD16, the other end of the first input capacitor C21 is connected with the touch output end G1, the drain electrode of the sub-control MOS tube V13 is connected with the double-control line connection end A, and the intelligent control output end U01 of the intelligent touch control circuit is connected with the control end of the trigger switch triode V4 to control the on-off of the driving branch; the main switch driving circuit is further provided with a lamp-free and empty unlocking lock circuit unit and a double-control line connecting end A, the lamp-free and empty unlocking lock circuit unit comprises a differential capacitor C5, a differential resistor R13, a lamp output diode VD8, a first current limiting resistor R16 and an identification MOS tube V7, the identification MOS tube V7 is connected between an emitter of a trigger switch triode V4 and a negative electrode of a direct-current stabilized power supply in the driving branch, the differential capacitor C5 and the differential resistor R13 are sequentially connected in series and then are connected between an intelligent control output end U01 and the negative electrode of the direct-current stabilized power supply, a grid electrode of the identification MOS tube V7 is connected to a connecting point of the differential capacitor C5 and the differential resistor R13, after the lamp output diode VD8 and the first current limiting resistor R16 are sequentially connected in series, a positive electrode of the lamp output diode VD8 is connected with a connecting point of a trigger photoelectric coupler OP1 output end and a stabilized voltage diode VZ2 in the driving branch, and one end of the first current limiting resistor R16 is connected with a grid electrode of the identification MOS tube V7.

Compared with the prior art, the invention avoids the situation that the switch is turned on under the condition that one of the double-control intelligent switches has poor contact or broken wire of the live wire or the air switch trips due to overload, so that the electronic element on the PCB is damaged due to overvoltage by arranging the lamp-free empty unlocking circuit unit and the live wire open-circuit protection circuit unit in the main switch driving circuit; in addition, the technical defect that the wireless single-channel double-control function cannot be realized when the existing single-live wire single-channel double-control intelligent switch lacks a zero line is thoroughly solved by adopting a double-control line one-to-one connection double-control mode, the control mode is simple, the compatibility is strong, the overall cost of a product is greatly reduced, and compared with the wireless double-control switch, the anti-interference capability of a circuit is greatly improved, and the work is more reliable.

The invention further aims to provide the single-live wire SCR type wall double-control intelligent and touch switch circuit which is matched with the single-live wire SCR type wall double-control intelligent and touch switch circuit in pairs for use, and is simpler in structure and lower in cost.

In order to achieve the above purpose, the invention provides a single-live wire SCR type wall double-control intelligent and touch switch circuit, which comprises a direct current stabilized power supply circuit and an intelligent touch control circuit, and is characterized in that: the device comprises one or more double-control line connecting ends A, a number of main loops less than the number of the double-control line connecting ends A, a corresponding number of main thyristors VT1 serving as main switching elements and a main switch driving circuit, wherein the main thyristors VT1 and the main switch driving circuits are arranged in the main loops in series; the main switch element is a bidirectional thyristor, two ends of the main loop are respectively a live wire connecting end L connected with a live wire and a load connecting end L1 connected with a load, the direct-current stabilized power supply circuit provides working power supply for each unit circuit, and the main switch driving circuit controls the on-off of the main switch element; the main switch driving circuit comprises a triggering branch and a driving branch for controlling the on-off of the triggering branch, the triggering branch is a serial branch comprising a triggering photoelectric coupler OP1 output end and a voltage stabilizing diode VZ2, two ends of the triggering branch are respectively connected with a load connecting end L1 and a G electrode of the main thyristor VT1, the driving branch is a serial branch comprising a triggering photoelectric coupler OP1 input end and a triggering switch triode V4, and two ends of the driving branch are respectively connected with two ends of an anode and a cathode of a working power supply; the intelligent touch control circuit comprises an intelligent comprehensive control unit, a Bluetooth or zigbee module U4 and a comprehensive control output unit; the intelligent comprehensive control unit consists of a singlechip U3 and peripheral elements thereof, and is provided with one or more touch input ends, a corresponding number of synchronous pulse type touch output ends G1, one or more intelligent double-control on-off control input ends K1 and a corresponding number of intelligent control output ends U01, wherein the intelligent control output ends U01 are of a locking type; the touch output end G1 is connected with a wired input end K11 of the Bluetooth or zigbee module U4; the comprehensive control output unit comprises one or more sub-control output units, wherein the sub-control output units comprise a sub-control MOS tube V13, a lower bias resistor R26, a first input capacitor C21, a first input diode VD16, a second input capacitor C24, a second input diode VD19 and a second isolation diode VD22; the drain electrode of the sub-control MOS tube V13 is connected with the positive electrode of the second isolation diode VD22, the source electrode of the sub-control MOS tube V13 is connected with the negative electrode of the direct current stabilized power supply, the negative electrode of the second isolation diode VD22 is connected with the positive input end of the direct current stabilized power supply, the lower bias resistor R26 is connected in parallel between the grid electrode of the sub-control MOS tube V13 and the negative electrode of the direct current stabilized power supply, and one end of the first input capacitor C21 and the negative electrode end of the first input diode VD16 are connected with the grid electrode of the sub-control MOS tube V13; the positive electrode of the second input diode VD19 is connected with the upper end of the second input capacitor C24, the negative electrode of the second input diode VD19 and the lower end of the second input capacitor C24 are connected on the drain electrode and the source electrode of the sub-control MOS tube V13 in parallel, and the connection midpoint of the second input diode VD19 and the second input capacitor C24 is connected with the intelligent double-control on-off control input end K1; the output end G4 of the Bluetooth or zigbee module U4 is connected with the positive electrode of the first input diode VD16, the other end of the first input capacitor C21 is connected with the touch output end G1, the drain electrode of the sub-control MOS tube V13 is connected with the double-control line connection end A, and the intelligent control output end U01 of the intelligent touch control circuit is connected with the control end of the trigger switch triode V4 to control the on-off of the driving branch; the main switch driving circuit is further provided with a lamp-free and empty unlocking lock circuit unit and a double-control line connecting end A, the lamp-free and empty unlocking lock circuit unit comprises a differential capacitor C5, a differential resistor R13, a lamp output diode VD8, a first current limiting resistor R16 and an identification MOS tube V7, the identification MOS tube V7 is connected between an emitter of a trigger switch triode V4 and a negative electrode of a direct-current stabilized power supply in the driving branch, the differential capacitor C5 and the differential resistor R13 are sequentially connected in series and then are connected between an intelligent control output end U01 and the negative electrode of the direct-current stabilized power supply, a grid electrode of the identification MOS tube V7 is connected to a connecting point of the differential capacitor C5 and the differential resistor R13, after the lamp output diode VD8 and the first current limiting resistor R16 are sequentially connected in series, a positive electrode of the lamp output diode VD8 is connected with a connecting point of a trigger photoelectric coupler OP1 output end and a stabilized voltage diode VZ2 in the driving branch, and one end of the first current limiting resistor R16 is connected with a grid electrode of the identification MOS tube V7.

As a further arrangement of the invention, the main switch driving circuit is also provided with a live wire open-circuit protection circuit unit, and the live wire open-circuit protection circuit unit comprises an open-circuit protection electronic switch, an open-circuit detection branch and a protection control circuit unit; the open circuit detection branch circuit comprises a first detection resistor R20, a second detection resistor R21 and a first isolation diode VD26; the open-circuit protection electronic switch is connected in series between the driving branch and the power supply negative electrode, the first detection resistor R20, the second detection resistor R21 and the first isolation diode VD26 are sequentially connected in series and then connected between the positive electrode of the direct-current stabilized power supply Vcc3 and the double-control line connecting end A, the connection midpoint of the first detection resistor R20 and the second detection resistor R21 is connected with the open-circuit protection input end of the protection control circuit unit, and the open-circuit protection output end of the protection control circuit unit is connected with the control end of the open-circuit protection electronic switch.

As a further arrangement of the invention, the live wire open circuit protection circuit unit further comprises a self-locking diode VD25, the open circuit protection electronic switch is composed of a switch MOS tube V10, and the protection control circuit unit is composed of a control singlechip U2 and peripheral elements thereof; the drain electrode and the source electrode of the switch MOS tube V10 are connected in series between the driving branch and the negative electrode of the power supply, the grid electrode of the switch MOS tube V10 is connected with the open-circuit protection output end of the control circuit unit, and the positive electrode and the negative electrode of the self-locking diode VD25 are respectively connected with the open-circuit protection input end and the open-circuit protection output end of the control singlechip U2.

As a further arrangement of the invention, the main switch driving circuit is further provided with a high-frequency pulse forming unit, the high-frequency pulse forming unit comprises a high-frequency MOS tube V9, a charging diode VD4, a second voltage dividing resistor R18, a third voltage dividing resistor R19 and a control circuit unit, the positive electrode of the charging diode VD4 is connected with the cathode of the voltage stabilizing diode VZ2, the drain electrode and the source electrode of the high-frequency MOS tube V9 are connected in series between the source electrode of the identifying MOS tube V7 and the drain electrode of the switch MOS tube V10, the control singlechip U2 in the control circuit unit is further provided with a high-frequency pulse output end and a pulse control end, when the pulse control end is at a low level, the high-frequency pulse output end outputs a high-frequency pulse with a duty ratio of 1:4, the high-frequency pulse output end is connected with the gate electrode of the high-frequency MOS tube V9, the second voltage dividing resistor R18 and the third voltage dividing resistor R19 are connected in a voltage dividing branch between the negative electrode of the charging diode V7 and the negative electrode of the power supply, and the pulse control end is connected in series with the voltage dividing branch VD.

As a further arrangement of the invention, the direct current stabilized power supply circuit is composed of a single-ended flyback switching power supply circuit; the input alternating voltage between the live wire connecting end and the load connecting end is used as the power supply of the single-ended flyback switching power supply circuit after bridge rectification and filtration, and the secondary coil output of the transformer B1 in the single-ended flyback switching power supply circuit is used as the direct current power supply voltage after rectification, filtration and voltage stabilization to provide power supply for the control circuit and the driving circuit.

As a further arrangement of the present application, the dc voltage-stabilizing power supply circuit is further provided with a switching-on voltage-stabilizing circuit unit, where the switching-on voltage-stabilizing circuit unit includes a voltage-stabilizing diode VZ2, a charging diode VD4, a first isolation diode VD7, an NTC current-limiting resistor Rt and a photo coupler OP1, where an output end of the photo coupler OP1 and the voltage-stabilizing diode VZ2 are connected in series between a load connection end L1 and a G pole of the main thyristor VT1 to form the trigger branch, an anode of the voltage-stabilizing diode VZ2 is connected to the G pole of the main thyristor VT1, an anode of the charging diode VD4 is connected to a cathode of the voltage-stabilizing diode VZ2, one end of the NTC current-limiting resistor Rt is connected to an anode of the first isolation diode VD7, another end of the NTC current-limiting resistor Rt is connected to a cathode of the charging diode VD4, a cathode of the first isolation diode VD7 is connected to an input end of the three-terminal regulator U1, and two ends of the output energy-storing capacitor C2 are respectively connected to an input end of the three-terminal regulator U1 and a cathode of the power supply.

In order that those skilled in the art will better understand the present application, a detailed description of the preferred embodiments of the present application and the accompanying drawings will be provided below, wherein it is apparent that the described embodiments are only some, but not all, embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.

Drawings

FIG. 1 is a schematic circuit diagram of an embodiment 1 of a DC stabilized power supply circuit according to the present invention;

FIG. 2 is a schematic circuit diagram of an embodiment 1 of the main circuit and trigger circuit of the present invention;

FIG. 3 is a schematic circuit diagram of an embodiment 1 of a driving branch of the present invention;

FIG. 4 is a schematic circuit diagram of an embodiment 1 of the main switch driving circuit of the present invention;

FIG. 5 is a schematic circuit diagram of an embodiment 1 of the integrated control output unit of the present invention;

FIG. 6 is a schematic circuit diagram of an embodiment 1 of the intelligent integrated control unit of the present invention;

FIG. 7 is a schematic diagram of a circuit connection of one-way dual control circuit of the present invention;

FIG. 8 is a schematic diagram of a two-way dual control circuit connection of the present invention;

fig. 9 is a schematic diagram of a three-way dual control circuit connection of the present invention.

Detailed Description

Specific example 1:

the single-live wire SCR type wall double-control intelligent and touch switch circuit comprises at least one main loop, a main thyristor VT1, a main switch driving circuit, a direct-current voltage-stabilizing power supply circuit, an intelligent touch control circuit and double-control wire connecting ends A, B and C, wherein the main thyristor VT1 is arranged in the main loop in a series manner and is used as a main switch element; the main switch driving circuit comprises a trigger branch and a driving branch for controlling the on-off of the trigger branch, the trigger branch is a serial branch comprising a trigger photoelectric coupler OP1 output end, two ends of the trigger branch are respectively connected to a load connecting end L1 and a G electrode of a main thyristor VT1, the driving branch is a serial branch comprising a trigger photoelectric coupler OP1 input end and a trigger switch triode V4, and two ends of the driving branch are respectively connected to the positive electrode and the negative electrode of a working power supply. In this specific embodiment, the intelligent touch control circuit includes an intelligent integrated control unit, a bluetooth or zigbee module U4, and an integrated control output unit. As shown in fig. 6, the bluetooth or zigbee module U4 has one or more wired inputs K11, K22, K33..and a corresponding number of outputs G4, G5, G6...when the wired inputs K11, K22, K33..a wireless antenna has a signal input, the outputs G4, G5, G6...output a single pulse signal; the intelligent integrated control unit consists of a single chip microcomputer U3 and peripheral elements thereof, wherein the intelligent integrated control unit is characterized in that the single chip microcomputer U3 is provided with one or more than one touch input end M and synchronous pulse type touch output ends G1, G2 and G3. with corresponding numbers, one or more than one intelligent double-control on-off control input ends K1, K2 and K3., and intelligent control output ends U01, U02 and U03 with corresponding numbers, and the touch output ends G1, G2 and G3. are connected with wired input ends K11, K22 and K33 of a Bluetooth or zigbee module U4. The touch output terminals G1, G2, G3. are synchronous pulse output terminals with high level valid, that is, when the touch input terminal M has a touch signal input, the touch output terminals G1, G2, G3. output high level simultaneously, and when no touch signal input, the touch output terminals G1, G2, G3. resume outputting low level; the intelligent control output ends U01, U02 and U03 are locking type, the intelligent double-control on-off control input ends K1, K2 and K3. are low-level effective input ends, and the intelligent control output ends U01, U02 and U03 are high-level effective output ends; namely under the initial condition, intelligent control output end U01, U02, U03.

As shown in fig. 5, the integrated control output unit includes one or more sub-control output units, where the sub-control output unit includes a sub-control MOS transistor V13, a lower bias resistor R26, a first input capacitor C21, a first input diode VD16, a second input capacitor C24, a second input diode VD19, and a second isolation diode VD22; the drain electrode of the sub-control MOS tube V13 is connected with the positive electrode of the second isolation diode VD22, the source electrode of the sub-control MOS tube V13 is connected with the negative electrode of the direct current stabilized power supply, the negative electrode of the second isolation diode VD22 is connected with the positive input end of the direct current stabilized power supply, the lower bias resistor R26 is connected in parallel between the grid electrode of the sub-control MOS tube V13 and the negative electrode of the direct current stabilized power supply, and one end of the first input capacitor C21 and the negative electrode end of the first input diode VD16 are connected with the grid electrode of the sub-control MOS tube V13; after the positive electrode of the second input diode VD19 is connected with the upper end of the second input capacitor C24, the negative electrode of the second input diode VD19 and the lower end of the second input capacitor C24 are connected in parallel to the drain electrode and the source electrode of the sub-control MOS transistor V13, and the connection midpoint of the second input diode VD19 and the second input capacitor C24 is connected with the intelligent double-control on-off control input end K1; the output end G4 of the Bluetooth or zigbee module U4 is connected with the positive electrode of the first input diode VD16, and the other end of the first input capacitor C21 is connected with the touch output end G1; the drain electrode of the sub-control MOS tube V13 is connected with the connection ends A, B and C of the double-control line, and the intelligent control output ends U01, U02 and U03 of the intelligent touch control circuit are connected with the control end of the trigger switch triode V4 to control the on-off of the driving branch.

In this embodiment, the dc voltage-stabilizing power supply circuit is formed by a single-ended flyback switching power supply circuit; as shown in fig. 1, the single-ended flyback switching power supply circuit includes a group of rectifying, filtering and voltage stabilizing power supply circuits, an input ac voltage between the live wire connection end and the load connection end is used as a power supply of the single-ended flyback switching power supply circuit after being subjected to bridge rectification and filtering, an output of a secondary coil of the transformer B1 is used as a power supply of a direct current power supply system after being subjected to rectification and filtering of a first rectifying diode VD2 and a filtering capacitor C3, and an output of a secondary coil of the transformer B1 is used as a power supply of a control circuit and a driving circuit after being subjected to rectification, filtering and voltage stabilizing of a second rectifying diode VD3, the filtering capacitor and a three-terminal voltage stabilizer.

The number of main loops, main switch driving circuits, touch input ends, intelligent double-control on-off control input ends and double-control line connection ends in the single-live wire SCR type wall double-control intelligent and touch switch circuit is corresponding to the number of paths controlled by the switch, if the single-live wire SCR type wall double-control intelligent and touch switch circuit is one path of double-control, one main loop and main switch driving circuit and one touch input end M, a locking input end K1 and double-control line connection end A, B are arranged, if the single-live wire SCR type wall double-control intelligent and touch switch circuit is two paths of double-control, two main loop and main switch driving circuits and two touch input ends M, intelligent double-control on-off control input ends K1 and K2 and double-control line connection end A, B are arranged, and the limit of the internal space of a wall switch is usually not more than three paths. In this embodiment, taking two paths of double-control wall switches as an example, two main loops L-L1 and L-L3 and a main switch driving circuit are set, and the two main loops and the main switch driving circuit have the same structure, taking a first path L-L1 as an example: the main thyristor VT1 is a bidirectional thyristor, and two ends of the main loop are respectively a live wire connecting end L connected with a live wire and a load connecting end L1 connected with a load. The main switch driving circuit comprises a trigger branch and a driving branch for controlling the on-off of the trigger branch, and each main loop corresponds to one main switch driving circuit. In this embodiment, the first path is taken as an example as well: as shown in fig. 2, the triggering branch is a serial branch including an output end of a triggering photoelectric coupler OP1, two ends of the triggering branch are respectively connected to a load connection end L1 and a G electrode of the main thyristor VT1, in this embodiment, the triggering branch includes an output end of the photoelectric coupler OP1 and a zener diode VZ2, the output end of the photoelectric coupler OP1 and the zener diode VZ2 are serially connected between the T2 electrode and the G electrode of the main thyristor VT1, an anode of the zener diode VZ2 is connected to the G electrode of the main thyristor VT1, and one end of the output end of the photoelectric coupler OP1 is connected to the load connection end L1.

As shown in fig. 3, the driving branch is a serial branch including an input end of the trigger photoelectric coupler OP1 and a trigger switch triode V4, and two ends of the driving branch are respectively connected to two ends of an anode and a cathode of the working power supply Vcc 3; the trigger switch triode V4 is an NPN triode, the input end of the trigger photoelectric coupler OP1 in the driving branch is connected with the current limiting resistor R6 and the collector electrode of the trigger switch triode V4 and then connected to the positive electrode of the direct-current stabilized power supply, the emitter electrode of the trigger switch triode V4 is connected to the negative electrode of the direct-current stabilized power supply to form an amplifying driving circuit, and the base electrode of the trigger switch triode V4 is connected with the intelligent control output end U01 through the base electrode resistor R9.

In order to ensure that the control circuit power supply works normally and the multi-path double-control circuit side lamp is turned off without supplementing charge and is not lighted, the direct-current voltage-stabilizing power supply circuit is further provided with a turn-on voltage-stabilizing circuit unit for automatically turning off the single-ended flyback switching power supply circuit, the turn-on voltage-stabilizing circuit unit comprises a voltage-stabilizing diode VZ2, a charging diode VD4, a first isolation diode VD7, an NTC current-limiting resistor Rt and a photoelectric coupler OP1, the voltage-stabilizing value of the voltage-stabilizing diode VZ2 is 12V, the output end of the photoelectric coupler OP1 and the voltage-stabilizing diode VZ2 are connected in series between a load connecting end L1 and the G pole of a main thyristor VT1, the anode of the voltage-stabilizing diode VZ2 is connected to the G pole of the main thyristor VT1, the anode of the charging diode VD4 is connected with the cathode of the voltage-stabilizing diode VZ2, one end of the NTC current-limiting resistor Rt is connected with the anode of the first isolation diode VD7, the other end of the NTC current-limiting resistor Rt is connected with the cathode of the charging diode VD4, and the two ends of the voltage-stabilizing diode VD7 are connected with the input end of the voltage-stabilizing diode VD 1 respectively.

In order to avoid the switch circuit to turn on the switch when the load (lamp) is not connected, the single-path double-control intelligent switch is easy to cause dead halt and light up due to no power supply charging, the main switch driving circuit of each path of driving branch in the single-live wire SCR type wall double-control intelligent and touch control switch circuit is also provided with a lamp-free empty unsealing lock circuit unit, as shown in fig. 4, taking the first path as an example: the lamp-free empty unlocking circuit unit comprises a differential capacitor C5, a differential resistor R13, a lamp output diode VD8, a first current limiting resistor R16 and an identification MOS tube V7, wherein the identification MOS tube V7 is connected between an emitter of a trigger switch triode V4 in the driving branch and a negative electrode of a direct-current stabilized power supply, the differential capacitor C5 and the differential resistor R13 are sequentially connected in series and then are connected between an intelligent control output end U01 and the negative electrode of the direct-current stabilized power supply, a grid electrode of the identification MOS tube V7 is connected to a connection point of the differential capacitor C5 and the differential resistor R13, after the lamp output diode VD8 and the first current limiting resistor R16 are sequentially connected in series, an anode of the lamp output diode VD8 is connected with an inner side point of an output end of a trigger photoelectric coupler OP1 of the trigger branch (namely a T2 electrode of a non-main thyristor VT1 or a load connection end L1), in this embodiment, one end of the first current limiting resistor R16 is connected with the grid electrode of the identification MOS tube V7.

The working principle of the lamp-free unlocking lock circuit unit is as follows:

referring to fig. 2 and 4, when no on signal (touch or bluetooth signal) is input, the intelligent control output terminal U01 is at low level, the trigger switch triode V4 in the driving branch is turned off, no current flows through the input terminal of the trigger photo coupler OP1, no current flows through the output terminal of the photo coupler OP1 and the zener diode VZ2 in the triggering branch, the main thyristor VT1 is turned off, and the lamp is not lighted.

When a lamp starting signal is input, the intelligent control output end U01 is at a high level (about 3V), the voltage enables the trigger switch triode V4 in the driving branch to be conducted through the base resistor R9, current flows through the input end of the trigger photoelectric coupler OP1, current flows through the output end of the photoelectric coupler OP1 and the voltage stabilizing diode VZ2 in the trigger branch, the main thyristor VT1 is conducted, the lamp is lighted, the voltage of the cathode (namely the T1 end) of the lamp output diode VD8 is zero, the voltage on the differential capacitor C5 cannot be suddenly changed, the grid voltage of the identification MOS tube V7 is gradually reduced from 12V, but when the next intelligent control output end U01 is pulsed at a high level, the circuit design enables the grid voltage of the identification MOS tube V7 to be far greater than 3V, the identification MOS tube V7 is reliably conducted, and the differential capacitor C5 is recharged to 12V.

When a load (lamp) is not connected and a lamp-on signal is input, the intelligent control output end U01 is in a high level (about 3V), the voltage is charged through the differential capacitor C5, the gate voltage of the identification MOS tube V7 is about 3V, the main thyristor VT1 is conducted, then the gate voltage of the identification MOS tube V7 gradually drops to zero, the main thyristor VT1 is cut off, at the moment, although the trigger switch triode V4 is conducted, no current flows through the trigger photoelectric coupler OP1 input end, the output end of the photoelectric coupler OP1 and the voltage stabilizing diode VZ2 in the trigger branch are likewise not in current, and the main thyristor VT1 is cut off.

In order to avoid that when one of the double-control intelligent switches is in poor contact or broken line or the air switch trips due to overload, the switch is turned on, so that an electronic element on a PCB (printed circuit board) is damaged due to overvoltage, a main switch driving circuit of each driving branch in the single-live wire SCR type wall double-control intelligent and touch switch circuit is preferably further provided with a live wire open-circuit protection circuit unit, the live wire open-circuit protection circuit unit comprises an open-circuit protection electronic switch, an open-circuit detection branch and a protection control circuit unit, the open-circuit detection branch comprises a first detection resistor R20, a second detection resistor R21 and a first isolation diode VD26, the open-circuit protection electronic switch is connected between the driving branch and a power supply cathode, the first detection resistor R20, the second detection resistor R21 and the first isolation diode VD26 are sequentially connected between the anode of a direct-current stabilized power supply Vcc3 and a double-control line connecting end A, the connection midpoints of the first detection resistor R20 and the second detection resistor R21 are connected with an open-circuit protection control input end of the protection control circuit unit, and a protection control output end of the protection control circuit unit is connected with the open-circuit protection electronic switch.

The live wire open-circuit protection circuit unit preferably further comprises a self-locking diode VD25, in this embodiment, the open-circuit protection electronic switch is formed by a switch MOS tube V10, and the protection control circuit unit is formed by a control singlechip U2 and peripheral elements thereof; the drain electrode and the source electrode of the switch MOS tube V10 are connected in series between the driving branch and the negative electrode of the power supply, the grid electrode of the switch MOS tube V10 is connected with the open-circuit protection control output end of the protection control circuit unit, and the positive electrode and the negative electrode of the self-locking diode VD25 are respectively connected with the open-circuit protection input end and the open-circuit protection output end of the control singlechip U2.

The working principle of the single-live wire SCR type wall double-control intelligent and touch switch circuit is as follows:

when the single-live wire SCR type wall double-control intelligent and touch switch circuit is used, double controls are formed by paired arrangement, and a double-control wire connecting end A between the two single-live wire SCR type wall double-control intelligent and touch switch circuits is correspondingly connected through a preset (or original) double-control wire, so that the two single-live wire SCR type wall double-control intelligent and touch switch circuits are respectively called as an intelligent switch circuit I and an intelligent switch circuit II for convenience in description. In the invention, the touch output end G1 is in a low level in an initial state of the single-live wire SCR type wall double-control intelligent and touch switch circuit after being powered on; the locking input end K1 is high level, the intelligent control output end U01 is low level, the touch output end G1 is low level, the branch control MOS tube V13 is cut off, the point voltage of the connecting end A of the double control line is high level 5V, the input voltage of an open-circuit protection control input end (the 5 th pin of the control singlechip U2) of the protection control circuit unit is larger than the minimum voltage set in the inside through the voltage division of the first detection resistor R20 and the second detection resistor R21, the open-circuit protection control output end (the 4 th pin of the control singlechip U2) outputs high level, the switch MOS tube V10 is conducted, and the control of the intelligent control output end U01 on the driving branch is not affected.

1) Touch control:

when a touch signal is input to a touch input end M in a first (like a first) intelligent switch circuit, a high level is output by a touch output end G1, a sub-control MOS tube V13 is conducted, a double-control line connecting end A and a locking input end K1 are low level, an intelligent control output end U01 is high level, a trigger switch triode V4 is conducted, a trigger main thyristor VT1 is conducted, a trigger photoelectric coupler OP1 input end has current flowing, a current flows to an output end of the photoelectric coupler OP1 and a voltage stabilizing diode VZ2 in the trigger branch, a first electric lamp is lightened, after the touch signal of the touch input end M disappears, the output of the touch output end G1 is restored to the low level, the sub-control MOS tube V13 is cut off, the double-control line connecting end A and the locking input end K1 are high level, the intelligent control output end U01 maintains the high level, and the first electric lamp maintains to be lightened; after that, when the first touch input end M in the first intelligent switch circuit inputs a touch signal again, the touch output end G1 outputs a high level again, the sub-control MOS tube V13 is turned on, the dual-control line connection end a and the locking input end K1 are changed from a high level to a low level, the intelligent control output end U01 is turned to a low level, the trigger switch triode V4 is turned off, the trigger main thyristor VT1 is turned off, no current flows through the trigger optocoupler OP1 input end, no current flows through the output end of the optocoupler OP1 and the zener diode VZ2 in the trigger branch, and the first electric lamp is turned off.

When a touch signal is input to a first touch input end M in the intelligent switching circuit II in a first-path lamp lighting state, a high level is output by a touch output end G1 in the intelligent switching circuit II, a sub-control MOS tube V13 is conducted, a double-control line connecting end A and a locking input end K1 in the intelligent switching circuit II are changed from the high level to the low level, the double-control line connecting end A in the intelligent switching circuit II enables the double-control line connecting end A in the intelligent switching circuit I to be changed from the high level to the low level through the double-control line, a locking input end K1 is changed from the high level to the low level, an intelligent control output end U01 in the intelligent switching circuit I is turned to the low level, a trigger switch triode V4 is cut off, a trigger main thyristor VT1 is cut off, no current flows through an input end of a trigger photoelectric coupler OP1, and an output end of the photoelectric coupler OP1 and a voltage stabilizing diode VZ2 in the trigger branch are not electrified, so that the double-control purpose is achieved.

2) Bluetooth or zigbee control:

when a Bluetooth or zigbee module U4 antenna in the first intelligent switch circuit receives a wireless control signal, the output end G4 outputs a single pulse signal, the sub-control MOS tube V13 is conducted, the double-control line connecting end A and the locking input end K1 are low level, the intelligent control output end U01 is high level, the trigger switch triode V4 is conducted, the trigger main thyristor VT1 is conducted, the trigger photoelectric coupler OP1 has current flowing through the input end, the output end of the photoelectric coupler OP1 and the voltage stabilizing diode VZ2 in the trigger branch circuit have current, the sub-control MOS tube V13 is cut off after the single pulse signal disappears, the double-control line connecting end A and the locking input end K1 are high level, the intelligent control output end U01 maintains the high level, and the first electric lamp maintains to be lighted; when a Bluetooth or zigbee module U4 antenna in the first intelligent switch circuit receives a wireless control signal again, the output end G4 outputs a single pulse signal again, the sub-control MOS tube V13 is conducted, the connection end A of the double-control line and the locking input end K1 are changed from high level to low level, the intelligent control output end U01 is turned to low level, the trigger switch triode V4 is turned off, the trigger main thyristor VT1 is turned off, no current flows through the trigger photoelectric coupler OP1 input end, no current flows through the output end of the photoelectric coupler OP1 and the voltage stabilizing diode VZ2 in the trigger branch, and the first electric lamp is turned off;

In the first-path lamp lighting state, when the Bluetooth or zigbee module U4 antenna in the second intelligent switch circuit receives the wireless control signal, the output end G4 in the second intelligent switch circuit outputs a single pulse signal, the sub-control MOS tube V13 is conducted, the double-control line connection end A and the locking input end K1 in the second intelligent switch circuit are changed from high level to low level, the double-control line connection end A in the second intelligent switch circuit changes the double-control line connection end A in the first intelligent switch circuit from high level to low level through the double-control line, the locking input end K1 is changed from high level to low level, the intelligent control output end U01 in the first intelligent switching circuit turns to low level, the trigger switch triode V4 is cut off, the trigger main thyristor VT1 is cut off, no current flows through the trigger photoelectric coupler OP1 input end, no current flows through the trigger photoelectric coupler OP1 output end and the voltage stabilizing diode VZ2 in the trigger branch, and the first electric lamp is extinguished, so that the aim of double control is achieved.

The working principle of the live wire open circuit protection circuit unit is as follows:

referring to fig. 4 and 6, in an initial state after the single-live wire SCR type wall double-control intelligent and touch switch circuit of the present invention is connected to an ac power supply, the touch output terminal G1 is at a low level; the locking input end K1 is high level, the intelligent control output end U01 is low level, the touch output end G1 is low level, the branch control MOS tube V13 is cut off, the point voltage of the connecting end A of the double control line is high level 5V, the input voltage of an open-circuit protection control input end (the 5 th pin of the control singlechip U2) of the protection control circuit unit is greater than 0V through the voltage division of the first detection resistor R20 and the second detection resistor R21, the high level is output by the open-circuit protection control output end (the 4 th pin of the control singlechip U2), the switch MOS tube V10 is conducted, and the control of the intelligent control output end U01 on the driving branch is not affected.

When a touch signal input is carried out at a touch input end M in the first intelligent switch circuit or a wireless control signal is received by a Bluetooth or zigbee module U4 antenna, the voltage at a double-control line connecting end A is reduced to VA=0.1V, the input voltage at an open-circuit protection control input end (a 5 th pin of a control singlechip U2) of a protection control circuit unit is greater than 0V through the voltage division of a first detection resistor R20 and a second detection resistor R21, the output of the open-circuit protection control output end (the 4 th pin of the control singlechip U2) is judged through an internal program, and a switch MOS tube V10 is conducted and does not influence the control of the intelligent control output end U01 on the driving branch.

Assuming that the live wire connecting end L in the intelligent switching circuit I connected with the load lamp cap RL has poor contact or broken wire of the live wire or the condition of tripping of an air switch caused by overload, the zero wire N in the intelligent switching circuit I cannot pass through the load lamp cap RL, the load connecting end L1 and the live wire connecting end L to form a loop, at this moment, the actual condition is that the zero wire N in the intelligent switching circuit I passes through the load lamp cap RL, the load connecting end L1, a secondary coil of the single-ended flyback switching power supply circuit, the live wire connecting end L, the positive electrode and the negative electrode of a diode VD13, the double-control wire connecting end A in the intelligent switching circuit I, the positive electrode and the negative electrode of a second isolation diode VD22, the negative electrode of a voltage stabilizing diode VZ5 and the positive electrode of the live wire connecting end L in the intelligent switching circuit II, and the novel current loop is formed, and the loop has the following characteristics: 1) Because the quiescent current of the single-ended flyback switching power supply circuit is less than 1mA, elements in the circuit cannot be damaged by overcurrent; 2) Because the breakdown voltage of the zener diode VZ5 is 6V, the components in the circuit are not damaged by overvoltage; 3) As a result, a negative voltage appears at the dual control line connection a (positive half cycle: va= -0.6V for the first intelligent switching circuit, VA = 6V for the second intelligent switching circuit; negative half cycle: va=6v for the first intelligent switching circuit, va= -0.6V for the second intelligent switching circuit; ) The input voltage of the open-circuit protection control input end (the 5 th pin of the control singlechip U2) of the protection control circuit unit is smaller than the minimum voltage set in the interior through the voltage division of the first detection resistor R20 and the second detection resistor R21, the open-circuit protection control output end (the 4 th pin of the control singlechip U2) outputs a low level, the switch MOS tube V10 is cut off, the driving branch is cut off, the control of the intelligent control output end U01 is avoided, and no current exists in the main loop, so that the protection control circuit is safer and more reliable than other protection modes.

In order to reduce the average current of the input end of the trigger photoelectric coupler OP1 in the driving branch circuit, the driving branch circuit is driven by a low-power lamp, the main switch driving circuit is preferably further provided with a high-frequency pulse forming unit, the high-frequency pulse forming unit comprises a high-frequency MOS tube V9, a charging diode VD4, a second voltage dividing resistor R18, a third voltage dividing resistor R19 and a control circuit unit, the anode of the charging diode VD4 is connected with the cathode of the voltage stabilizing diode VZ2, the drain electrode and the source electrode of the high-frequency MOS tube V9 are connected in series between the source electrode of the identification MOS tube V7 and the drain electrode of the switch MOS tube V10, the control singlechip U2 in the control circuit unit is also provided with a high-frequency pulse output end and a pulse control end, when the pulse control end is at a low level, the high-frequency pulse output end outputs a high-frequency pulse with a duty ratio of 1:4, the high-frequency pulse output end is connected with the grid electrode of the high-frequency MOS tube V9, the second voltage dividing resistor R18 and the third voltage dividing resistor R19 are connected with the voltage dividing resistor VD4 in series between the cathode of the voltage dividing tube and the voltage dividing resistor V10, and the negative electrode of the voltage dividing resistor is connected in series between the voltage dividing resistor VD and the negative electrode.

Specific example 2:

in order to provide the single-live wire SCR type wall double-control intelligent and touch switch circuit which is matched with the single-live wire SCR type wall double-control intelligent and touch switch circuit in pairs for use, the structure is simpler, the cost is lower, and the use cost is reduced.

Therefore, in this embodiment, the single-live wire SCR type wall dual-control intelligent and touch switch circuit includes a dc stabilized voltage power supply circuit and an intelligent touch control circuit, and includes one or more dual-control line connection terminals a, a number of main circuits less than the number of the dual-control line connection terminals a, and a main thyristor VT1 and a main switch driving circuit as main switch elements, which are serially arranged in the main circuits, wherein the main switch elements are bidirectional thyristors, two ends of the main circuits are respectively a live wire connection terminal L connected with a live wire and a load connection terminal L1 connected with a load, the dc stabilized voltage power supply circuit provides a working power supply for each unit circuit, and the main switch driving circuit controls the on-off of the main switch elements; the main switch driving circuit comprises a triggering branch and a driving branch for controlling the on-off of the triggering branch, the triggering branch is a serial branch comprising a triggering photoelectric coupler OP1 output end and a voltage stabilizing diode VZ2, two ends of the triggering branch are respectively connected with a load connecting end L1 and a G electrode of the main thyristor VT1, the driving branch is a serial branch comprising a triggering photoelectric coupler OP1 input end and a triggering switch triode V4, and two ends of the driving branch are respectively connected with two ends of an anode and a cathode of a working power supply; the intelligent touch control circuit comprises an intelligent comprehensive control unit, a Bluetooth or zigbee module U4 and a comprehensive control output unit; the intelligent comprehensive control unit consists of a singlechip U3 and peripheral elements thereof, and is provided with one or more touch input ends, a corresponding number of synchronous pulse type touch output ends G1, one or more intelligent double-control on-off control input ends K1 and a corresponding number of intelligent control output ends U01, wherein the intelligent control output ends U01 are of a locking type; the touch output end G1 is connected with a wired input end K11 of the Bluetooth or zigbee module U4; the comprehensive control output unit comprises one or more sub-control output units, wherein the sub-control output units comprise a sub-control MOS tube V13, a lower bias resistor R26, a first input capacitor C21, a first input diode VD16, a second input capacitor C24, a second input diode VD19 and a second isolation diode VD22; the drain electrode of the sub-control MOS tube V13 is connected with the positive electrode of the second isolation diode VD22, the source electrode of the sub-control MOS tube V13 is connected with the negative electrode of the direct current stabilized power supply, the negative electrode of the second isolation diode VD22 is connected with the positive input end of the direct current stabilized power supply, the lower bias resistor R26 is connected in parallel between the grid electrode of the sub-control MOS tube V13 and the negative electrode of the direct current stabilized power supply, and one end of the first input capacitor C21 and the negative electrode end of the first input diode VD16 are connected with the grid electrode of the sub-control MOS tube V13; the positive electrode of the second input diode VD19 is connected with the upper end of the second input capacitor C24, the negative electrode of the second input diode VD19 and the lower end of the second input capacitor C24 are connected on the drain electrode and the source electrode of the sub-control MOS tube V13 in parallel, and the connection midpoint of the second input diode VD19 and the second input capacitor C24 is connected with the intelligent double-control on-off control input end K1; the output end G4 of the Bluetooth or zigbee module U4 is connected with the positive electrode of the first input diode VD16, the other end of the first input capacitor C21 is connected with the touch output end G1, the drain electrode of the sub-control MOS tube V13 is connected with the double-control line connection end A, and the intelligent control output end U01 of the intelligent touch control circuit is connected with the control end of the trigger switch triode V4 to control the on-off of the driving branch; the main switch driving circuit is further provided with a lamp-free and empty unlocking lock circuit unit and a double-control line connecting end A, the lamp-free and empty unlocking lock circuit unit comprises a differential capacitor C5, a differential resistor R13, a lamp output diode VD8, a first current limiting resistor R16 and an identification MOS tube V7, the identification MOS tube V7 is connected between an emitter of a trigger switch triode V4 and a negative electrode of a direct-current stabilized power supply in the driving branch, the differential capacitor C5 and the differential resistor R13 are sequentially connected in series and then are connected between an intelligent control output end U01 and the negative electrode of the direct-current stabilized power supply, a grid electrode of the identification MOS tube V7 is connected to a connecting point of the differential capacitor C5 and the differential resistor R13, after the lamp output diode VD8 and the first current limiting resistor R16 are sequentially connected in series, a positive electrode of the lamp output diode VD8 is connected with a connecting point of a trigger photoelectric coupler OP1 output end and a stabilized voltage diode VZ2 in the driving branch, and one end of the first current limiting resistor R16 is connected with a grid electrode of the identification MOS tube V7.

Likewise, in order to ensure the normal work of the control circuit power supply and ensure that the side lamps of the multi-path double-control circuit are turned off without charging and lighting, the direct-current voltage-stabilizing power supply circuit is also provided with a lamp-on voltage-stabilizing circuit unit; in order to avoid the switch circuit to turn on the switch when the load (lamp) is not connected, the single-path double-control intelligent switch is easy to cause dead halt and light up due to no power supply charging, and the main switch driving circuit of each path of driving branch in the single-live wire SCR type wall double-control intelligent and touch control switch circuit is also provided with a lamp-free empty unlocking lock circuit unit; in order to avoid that one of the double-control intelligent switches is opened under the condition that the live wire is in poor contact or broken wire or the air switch trips due to overload, so that electronic elements on a PCB (printed circuit board) are damaged due to overvoltage, the main switch driving circuit of each driving branch in the single-live wire SCR type wall double-control intelligent and touch control switch circuit is preferably provided with a live wire open circuit protection circuit unit.

In this embodiment, the main loop, the main thyristor VT1, the main switch driving circuit, the dc voltage-stabilizing power circuit, the intelligent touch control circuit, the turn-on voltage-stabilizing circuit unit, the no-lamp-space-open-lock circuit unit, and the fire wire open-circuit protection circuit unit, which are serially connected in the main loop and serve as main switching elements, are the same as those in embodiment 1, and are not described herein, i.e., fig. 2, fig. 3, fig. 5, and fig. 6 may serve as a single fire wire SCR type wall dual-control intelligent and touch switch circuit used in pairing with embodiment 1.

The invention can be matched with the concrete embodiment 1 (the intelligent switch circuit I), and in order to reduce engineering cost and not influence normal wiring mode and work, the invention can also be matched with the single-live wire SCR type wall double-control intelligent and touch switch circuits in the concrete embodiment 1 (the intelligent switch circuit I) and 2 (the intelligent switch circuit II), the concrete wiring mode is shown in figures 7-9, the double-control switch in the mode can save one path of main loop, main thyristor VT1 and main switch driving circuit, and the single path double-control can further save direct current stabilized power supply.

Claims

1. The single-live wire SCR type wall double-control intelligent and touch switch circuit comprises at least one main loop, a main thyristor serving as a main switch element, a main switch driving circuit, a direct-current stabilized power supply circuit and an intelligent touch control circuit, wherein the main switch element is a bidirectional thyristor, two ends of the main loop are respectively a live wire connecting end connected with a live wire and a load connecting end connected with a load, the direct-current stabilized power supply circuit provides working power for each unit circuit, and the main switch driving circuit controls the on-off of the main switch element; the main switch driving circuit comprises a trigger branch and a driving branch for controlling the on-off of the trigger branch, and is characterized in that: the trigger branch is a serial branch comprising a trigger photoelectric coupler output end and a voltage stabilizing diode, two ends of the trigger branch are respectively connected to a load connecting end and a G electrode of the main thyristor, the drive branch is a serial branch comprising a trigger photoelectric coupler input end and a trigger switch triode, and two ends of the drive branch are respectively connected to two ends of an anode and a cathode of a working power supply; the intelligent touch control circuit comprises an intelligent comprehensive control unit, a Bluetooth or zigbee module U4 and a comprehensive control output unit; the intelligent integrated control unit consists of a singlechip U3 and peripheral elements thereof, and is provided with one or more touch input ends, a corresponding number of synchronous pulse type touch output ends, one or more intelligent double-control on-off control input ends and a corresponding number of intelligent control output ends, wherein the intelligent control output ends are of a locking type; the touch output end is connected with a wired input end of the Bluetooth or zigbee module U4; the comprehensive control output unit comprises a group of or more sub-control output units, wherein the sub-control output units comprise sub-control MOS (metal oxide semiconductor) transistors, lower bias resistors, a first input capacitor, a first input diode, a second input capacitor, a second input diode and a second isolation diode; the drain electrode of the sub-control MOS tube is connected with the positive electrode of the second isolation diode, the source electrode of the sub-control MOS tube is connected with the negative electrode of the direct-current stabilized power supply, the negative electrode of the second isolation diode is connected with the positive input end of the direct-current stabilized power supply, the lower bias resistor is connected between the grid electrode of the sub-control MOS tube and the negative electrode of the direct-current stabilized power supply in parallel, and one end of the first input capacitor and the negative electrode end of the first input diode are connected with the grid electrode of the sub-control MOS tube; the anode of the second input diode is connected with the upper end of the second input capacitor, the cathode of the second input diode and the lower end of the second input capacitor are connected in parallel on the drain electrode and the source electrode of the sub-control MOS tube, and the connection midpoint of the second input diode and the second input capacitor is connected with the intelligent double-control on-off control input end; the output end of the Bluetooth or zigbee module U4 is connected with the positive electrode of a first input diode, the other end of the first input capacitor is connected with the touch output end, the drain electrode of the sub-control MOS tube is connected with the connection end of the double-control line, and the intelligent control output end of the intelligent touch control circuit is connected with the control end of the trigger switch triode to control the on-off of the driving branch; the main switch driving circuit is further provided with a lamp-free and empty unlocking circuit unit and a double-control line connecting end, the lamp-free and empty unlocking circuit unit comprises a differential capacitor, a differential resistor, a lamp output diode, a first current limiting resistor and an identification MOS tube, the identification MOS tube is connected between an emitter of a trigger switch triode and a cathode of a direct-current stabilized power supply in a driving branch circuit, the differential capacitor and the differential resistor are sequentially connected in series and then are connected between an intelligent control output end and the cathode of the direct-current stabilized power supply, a grid electrode of the identification MOS tube is connected to a connection point of the differential capacitor and the differential resistor, after the lamp output diode and the first current limiting resistor are sequentially connected in series, an anode of the lamp output diode is connected with a connection point of a trigger photoelectric coupler output end and the stabilized diode in a triggering branch circuit, and one end of the first current limiting resistor is connected with a grid electrode of the identification MOS tube.

2. The single fire wire SCR type wall dual control intelligent and touch switch circuit of claim 1, wherein: the main switch driving circuit is also provided with a live wire open-circuit protection circuit unit, and the live wire open-circuit protection circuit unit comprises an open-circuit protection electronic switch, an open-circuit detection branch and a protection control circuit unit; the open circuit detection branch circuit comprises a first detection resistor, a second detection resistor and a first isolation diode; the open-circuit protection electronic switch is connected in series between the driving branch and the power supply negative electrode, the first detection resistor, the second detection resistor and the first isolation diode are sequentially connected in series and then connected between the positive electrode of the direct-current stabilized power supply and the connection end of the double-control line, the connection midpoint of the first detection resistor and the second detection resistor is connected with the open-circuit protection input end of the protection control circuit unit, and the open-circuit protection output end of the protection control circuit unit is connected with the control end of the open-circuit protection electronic switch.

3. The single fire wire SCR type wall dual control intelligent and touch switch circuit as claimed in claim 2, wherein: the live wire open-circuit protection circuit unit further comprises a self-locking diode, the open-circuit protection electronic switch is composed of a switch MOS tube, and the protection control circuit unit is composed of a control singlechip U2 and peripheral elements thereof; the drain electrode and the source electrode of the switch MOS tube are connected in series between the driving branch and the negative electrode of the power supply, the grid electrode of the switch MOS tube is connected with the open-circuit protection output end of the control circuit unit, and the positive electrode and the negative electrode of the self-locking diode are respectively connected with the open-circuit protection input end and the open-circuit protection output end of the control singlechip U2.

4. A single fire wire SCR type wall dual control intelligent and touch switch circuit as defined in claim 3, wherein: the main switch driving circuit is further provided with a high-frequency pulse forming unit, the high-frequency pulse forming unit comprises a high-frequency MOS tube, a charging diode, a second voltage dividing resistor, a third voltage dividing resistor and a control circuit unit, the positive electrode of the charging diode is connected with the cathode of the voltage stabilizing diode, the drain electrode and the source electrode of the high-frequency MOS tube are connected in series between the source electrode of the identification MOS tube and the drain electrode of the switch MOS tube, a control singlechip U2 in the control circuit unit is further provided with a high-frequency pulse output end and a pulse control end, when the pulse control end is at a low level, the high-frequency pulse output end outputs a high-frequency pulse with the duty ratio of 1:4, when the pulse control end is at a high level, the high-frequency pulse output end is connected with the gate electrode of the high-frequency MOS tube, the second voltage dividing resistor and the third voltage dividing resistor are connected in series to form a voltage dividing branch to be connected between the cathode of the charging diode and the cathode of the power supply, and the pulse control end is connected with the midpoint of the voltage dividing branch.

5. The single fire wire SCR type wall dual control intelligent and touch switch circuit of claim 1, wherein: the direct-current stabilized power supply circuit is composed of a single-ended flyback switching power supply circuit; the input alternating voltage between the live wire connecting end and the load connecting end is used as the power supply of the single-ended flyback switching power supply circuit after bridge rectification and filtration, and the secondary coil output of the transformer in the single-ended flyback switching power supply circuit is used as the direct current power supply voltage after rectification, filtration and voltage stabilization to provide power supply for the control circuit and the driving circuit.

6. The single fire wire SCR type wall dual control intelligent and touch switch circuit of claim 5, wherein: the direct current stabilized power supply circuit is further provided with a switching on and stabilizing circuit unit, the switching on and stabilizing circuit unit comprises a stabilizing diode, a charging diode, a first isolating diode, an NTC current limiting resistor and a photoelectric coupler, the output end of the photoelectric coupler and the stabilizing diode are connected in series between a load connection end and the G pole of a main thyristor to form a trigger branch, the anode of the stabilizing diode is connected to the G pole of the main thyristor, the anode of the charging diode is connected with the cathode of the stabilizing diode, one end of the NTC current limiting resistor is connected with the anode of the first isolating diode, the other end of the NTC current limiting resistor is connected with the cathode of the charging diode, the cathode of the first isolating diode is connected with the input end of the three-terminal voltage stabilizer, and the two ends of the output energy storage capacitor are respectively connected with the input end of the three-terminal voltage stabilizer and the cathode of the power supply.

7. The utility model provides a two accuse intelligence of single live wire SCR type wall and touch-control switch circuit, includes direct current stabilized voltage supply circuit and intelligent touch control circuit, its characterized in that: the device comprises one or more double-control line connecting ends, a main loop with the number less than one of the double-control line connecting ends, and a main thyristor and a main switch driving circuit which are arranged in the main loop in series and used as main switch elements, wherein the number of the main loop is corresponding to the number of the double-control line connecting ends; the main switch element is a bidirectional thyristor, two ends of the main loop are respectively a live wire connecting end connected with a live wire and a load connecting end connected with a load, the direct-current stabilized power supply circuit provides working power supply for each unit circuit, and the main switch driving circuit controls the on-off of the main switch element; the main switch driving circuit comprises a triggering branch and a driving branch for controlling the on-off of the triggering branch, the triggering branch is a serial branch comprising a triggering photoelectric coupler output end and a voltage stabilizing diode, two ends of the triggering branch are respectively connected with a load connecting end and a G electrode of the main thyristor, the driving branch is a serial branch comprising a triggering photoelectric coupler input end and a triggering switch triode, and two ends of the driving branch are respectively connected with two ends of an anode and a cathode of a working power supply; the intelligent touch control circuit comprises an intelligent comprehensive control unit, a Bluetooth or zigbee module U4 and a comprehensive control output unit; the intelligent integrated control unit consists of a singlechip U3 and peripheral elements thereof, and is provided with one or more touch input ends, a corresponding number of synchronous pulse type touch output ends, one or more intelligent double-control on-off control input ends and a corresponding number of intelligent control output ends, wherein the intelligent control output ends are of a locking type; the touch output end is connected with a wired input end of the Bluetooth or zigbee module U4; the comprehensive control output unit comprises a group of or more sub-control output units, wherein the sub-control output units comprise sub-control MOS (metal oxide semiconductor) transistors, lower bias resistors, a first input capacitor, a first input diode, a second input capacitor, a second input diode and a second isolation diode; the drain electrode of the sub-control MOS tube is connected with the positive electrode of the second isolation diode, the source electrode of the sub-control MOS tube is connected with the negative electrode of the direct-current stabilized power supply, the negative electrode of the second isolation diode is connected with the positive input end of the direct-current stabilized power supply, the lower bias resistor is connected between the grid electrode of the sub-control MOS tube and the negative electrode of the direct-current stabilized power supply in parallel, and one end of the first input capacitor and the negative electrode end of the first input diode are connected with the grid electrode of the sub-control MOS tube; the anode of the second input diode is connected with the upper end of the second input capacitor, the cathode of the second input diode and the lower end of the second input capacitor are connected in parallel on the drain electrode and the source electrode of the sub-control MOS tube, and the connection midpoint of the second input diode and the second input capacitor is connected with the intelligent double-control on-off control input end; the output end of the Bluetooth or zigbee module U4 is connected with the positive electrode of a first input diode VD16, the other end of the first input capacitor is connected with the touch output end, the drain electrode of the sub-control MOS tube is connected with the connection end of the double-control line, and the intelligent control output end of the intelligent touch control circuit is connected with the control end of the trigger switch triode to control the on-off of the driving branch; the main switch driving circuit is further provided with a lamp-free and empty unlocking circuit unit and a double-control line connecting end, the lamp-free and empty unlocking circuit unit comprises a differential capacitor, a differential resistor, a lamp output diode, a first current limiting resistor and an identification MOS tube, the identification MOS tube is connected between an emitter of a trigger switch triode and a cathode of a direct-current stabilized power supply in a driving branch circuit, the differential capacitor and the differential resistor are sequentially connected in series and then are connected between an intelligent control output end and the cathode of the direct-current stabilized power supply, a grid electrode of the identification MOS tube is connected to a connection point of the differential capacitor and the differential resistor, after the lamp output diode and the first current limiting resistor are sequentially connected in series, an anode of the lamp output diode is connected with a connection point of a trigger photoelectric coupler output end and the stabilized diode in a triggering branch circuit, and one end of the first current limiting resistor is connected with a grid electrode of the identification MOS tube.

8. The single fire wire SCR type wall dual control intelligent and touch switch circuit of claim 7, wherein: the main switch driving circuit is also provided with a live wire open-circuit protection circuit unit, and the live wire open-circuit protection circuit unit comprises an open-circuit protection electronic switch, an open-circuit detection branch and a protection control circuit unit; the open circuit detection branch circuit comprises a first detection resistor, a second detection resistor and a first isolation diode; the open-circuit protection electronic switch is connected in series between the driving branch and the power supply negative electrode, the first detection resistor, the second detection resistor and the first isolation diode are sequentially connected in series and then connected between the positive electrode of the direct-current stabilized power supply and the connection end of the double-control line, the connection midpoint of the first detection resistor and the second detection resistor is connected with the open-circuit protection input end of the protection control circuit unit, and the open-circuit protection output end of the protection control circuit unit is connected with the control end of the open-circuit protection electronic switch.

9. The single fire wire SCR type wall dual control intelligent and touch switch circuit of claim 8, wherein: the live wire open-circuit protection circuit unit further comprises a self-locking diode, the open-circuit protection electronic switch is composed of a switch MOS tube, and the protection control circuit unit is composed of a control singlechip and peripheral elements thereof; the drain electrode and the source electrode of the switch MOS tube are connected in series between the driving branch and the negative electrode of the power supply, the grid electrode of the switch MOS tube is connected with the open-circuit protection output end of the control circuit unit, and the positive electrode and the negative electrode of the self-locking diode are respectively connected with the open-circuit protection input end and the open-circuit protection output end of the control singlechip U2.

10. The single fire wire SCR type wall dual control intelligent and touch switch circuit as claimed in claim 9, wherein: the main switch driving circuit is further provided with a high-frequency pulse forming unit, the high-frequency pulse forming unit comprises a high-frequency MOS tube, a charging diode, a second voltage dividing resistor, a third voltage dividing resistor and a control circuit unit, the positive electrode of the charging diode is connected with the cathode of the voltage stabilizing diode, the drain electrode and the source electrode of the high-frequency MOS tube are connected in series between the source electrode of the identification MOS tube and the drain electrode of the switch MOS tube, a control singlechip U2 in the control circuit unit is further provided with a high-frequency pulse output end and a pulse control end, when the pulse control end is at a low level, the high-frequency pulse output end outputs a high-frequency pulse with the duty ratio of 1:4, when the pulse control end is at a high level, the high-frequency pulse output end is connected with the gate electrode of the high-frequency MOS tube, the second voltage dividing resistor and the third voltage dividing resistor are connected in series to form a voltage dividing branch to be connected between the cathode of the charging diode and the cathode of the power supply, and the pulse control end is connected with the midpoint of the voltage dividing branch.