CN113630927B

CN113630927B - Single-live-wire off-state micro-current mode selectable double-control capacitive touch switch

Info

Publication number: CN113630927B
Application number: CN202110923471.XA
Authority: CN
Inventors: 周福生
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-07
Filing date: 2021-08-07
Publication date: 2024-03-19
Anticipated expiration: 2041-08-07
Also published as: CN113630927A

Abstract

The double-control capacitive touch switch with single-live wire switching state and micro-current mode is characterized in that when the switch is in a switching state, only a capacitive touch sensing circuit and a power supply circuit thereof have standby current, and other circuits do not need standby current, so that the switch has ultralow standby current when the switch is in the switching state, the flickering or darkness phenomenon of 'off and continuous' when an LED lamp and an energy-saving lamp are controlled is greatly improved, the load with power as low as 0.2W can be controlled, two or more switches can form a double-control or multi-control system, the switch can be controlled by a single key to be changed into a non-delay mode from a delay mode, the double-control or multi-control mechanical switch controlled by replacing the single-live wire does not need rewiring, and the switch is not damaged due to wiring errors. The invention has strong universality, can be applied to more occasions, can control more lamps and is beneficial to popularization of the capacitive touch switch.

Description

Single-live-wire off-state micro-current mode selectable double-control capacitive touch switch

Technical Field

The invention relates to a single-live wire off-state micro-current mode selectable double-control capacitive touch switch, and belongs to the technical field of electronic and electrical engineering.

Technical Field

1. The single-live-wire capacitive touch switch is expected to ensure that the smaller and better the current passing through the load when in an off state is in consideration of the requirement of controlling the load, and the control circuit is expected to ensure the normal operation of the circuit, the load cannot be too small, the load power is usually more than 5W, and the phenomenon of continuous flickering or dim light of an LED lamp and an electronic energy-saving lamp is easily caused by the too large standby current of the circuit when in the off state, which is always the bottleneck problem of the single-live-wire capacitive touch switch. The standby current is below 30uA, the flickering or dim light phenomenon of 'off-continuous' of an LED lamp and an electronic energy-saving lamp is greatly improved, but the existing single-live wire capacitive touch switch technical scheme, especially the double-control technical scheme, is very difficult to enable the standby current to be below 30uA, and the reason is that: (1) The rectifying filter capacitor in the power-taking circuit has certain leakage current under high voltage when in standby; (2) When the touch sensing circuit is in standby, the power supply circuit supplies power to the touch sensing circuit and also supplies power to other control circuits, the consumption current of the touch sensing circuit is weak, but the other control circuits are in a working state and have larger current consumption, so that the power supply circuit is used for providing enough electric energy, and the power consumption of the power supply circuit is correspondingly increased; (3) The existing wire control double-control scheme of the single-live wire capacitive touch switch adopts a mode that the main switch and the auxiliary switch synchronously switch working states by transmitting signals in two directions on the premise that the mechanical double-control switch is replaced and is not rewiring, and besides standby current is needed by the main switch and the auxiliary switch touch sensing circuit, standby current is still needed when the related circuits are switched off synchronously, so that during double control, the standby current of the touch sensing circuit is not only increased by times by current flowing through a load under the standby condition, but also is increased by times by the standby current of the related circuits. In addition, when the wire connected between the two switches is a little longer, the stability of the switch is poor and the switch is easy to run away.

2. The light is used for a short time in life, the light is forgotten to be turned off when the user is not busy, the user hopes to switch the light with a time delay function, and the user does not need to switch the light for a long time. In order to save energy, the same lamp is usually controlled in different places, and in general, the switch is required to have a delay function, and in special cases, such as emergency evacuation of people, the switch is required to be turned off without delay. However, the existing single-live-wire capacitive touch switch, particularly the single-live-wire double-control capacitive touch switch, has no function of converting a time delay mode into a non-time delay mode according to the use of field-one key operation.

3. The existing single-live-wire capacitive touch switch can cause switch damage when the wiring is wrong in a double-control scheme.

The defects of the existing single-live-wire capacitive touch switch limit the use occasions of the capacitive touch switch and increase the popularization difficulty of the capacitive touch switch.

Disclosure of Invention

The single-live-wire off-state micro-current mode selectable double-control capacitive touch switch provided by the invention is characterized in that when the single-live-wire capacitive touch switch is in an off state, only the capacitive touch sensing circuit and a power supply circuit thereof have standby current, other circuits do not need standby current, and the alternating current of the power supply circuit is powered on to avoid rectifying a filter capacitor, so that the switch has ultralow standby current when the switch is in the off state, and the switch can be normally turned on and kept on when the load power is as low as 0.2W. The switch can be set to be in a delay mode or a non-delay mode, under the delay mode, the switch is provided with a single key control mode, so that the delay mode is converted into the non-delay mode, two or more switches can form a double-control or multi-control system, the double-control or multi-control method is that a touch sensing circuit of a main switch and a touch sensing circuit of an auxiliary switch are sensing signal detection circuits which respectively and independently transmit signals to the main switch, the working state of the main switch is controlled, the touch sensing circuit comprises a capacitive touch sensing chip and a double-control distance increasing circuit, under the premise that the switches stably work, connecting wires between the two switches can be obviously increased, the double-control or multi-control mechanical switch for replacing single-live wire control does not need to be rewiring, the double-control or multi-control system is formed by the switch, and the switch is not damaged due to wiring errors.

The solution of the present invention for achieving the above object is shown in fig. 1. The switch comprises three terminals L, L, P, L is a live wire input terminal of the switch, L1 is a live wire output terminal of the switch, P is a double-control signal wire terminal, the switch comprises a power switch circuit, a self-adaptive power supply circuit, an induction signal detection circuit, a touch induction circuit, an on-state power supply circuit and a mode control circuit, the 1 end of the power switch circuit is connected with L, the 3 end of the power switch circuit is connected with L1, the 2 end of the power switch circuit is a switch control end, the 19 end of the power switch circuit is connected with the on-state power supply circuit, and a switching device in the power switch circuit is a bidirectional silicon controlled rectifier; the 4 end and the 7 end of the self-adaptive power supply circuit are respectively connected with the wiring terminal L and the L1 for taking electricity, the 4 end is connected with the wiring terminal L, the 7 end is connected with the wiring terminal L1, the 7 end can also be connected with the wiring terminal L, the 4 end is connected with the wiring terminal L1, the 7 end is the direct current power supply ground (x) of the self-adaptive power supply circuit, the 5 end is connected with the 15 end of the on-state power supply circuit, the 6 end is the low-voltage direct current power supply output end of the self-adaptive power supply circuit, and after the switch is switched from the off state to the on state, the 15 end of the on-state power supply circuit outputs current to the 5 end of the self-adaptive power supply circuit, so that the 6 end of the self-adaptive power supply circuit can normally provide power supply when the switch is in the on-state; the sensing signal detection circuit is characterized in that the 8 end of the sensing signal detection circuit is a power input end and is connected with the 6 end of the self-adaptive power circuit, the 9 end of the sensing signal detection circuit is a switching signal current output end, the 10 end of the sensing signal detection circuit is a touch signal detection end and is communicated with the double-control signal line terminal P, the 11 end of the sensing signal detection circuit is connected with the direct-current power ground (x) of the self-adaptive power circuit, and the 9 end of the sensing signal detection circuit outputs a switching signal after detecting that the current of the touch sensing circuit is increased; the 12 end of the touch sensing circuit is connected with the 10 end of the sensing signal detection circuit, and the 13 end of the touch sensing circuit is connected with the power ground (x) of the self-adaptive power supply circuit; the end 14 and the end 19 of the on-state power supply circuit are respectively connected with the end 1 and the end 2 of the power switch circuit to obtain electricity, the end 15 is a low-voltage direct-current power supply output end of the on-state power supply circuit, the end 16 is a holding current input end, the end 17 is a starting current input end, the end 9 is connected with the induction signal detection circuit, the end 18 is a direct-current power supply ground (y) of the on-state power supply circuit, the on-state power supply circuit does not work when the switch is in an off state, the electric energy consumption is zero, the ends 14 and 19 do not have current passing, the end 17 inputs the current to start the on-state power supply circuit, the end 16 continuously inputs the current to keep working, and therefore, the ends 14 and 19 of the on-state power supply circuit have current passing, and the current passing through the ends 14 and 19 trigger the bidirectional controllable silicon in the power switch circuit to be conducted; the mode control circuit is characterized in that a 24 end of the mode control circuit is a power input end and is connected to a 15 end of an on-state power circuit, a 21 end of the mode control circuit is connected to a power ground (y) of the on-state power circuit, a 22 end of the mode control circuit is a switching signal current input end and is connected to a 9 end of a sensing signal detection circuit, a 23 end of the mode control circuit is a holding current output end and is communicated with a 16 end of the on-state power circuit, a function selection end 20 end of the mode control circuit is connected with the power ground (y), the mode control circuit is equivalent to a bistable circuit, the 22 end of the mode control circuit is a trigger end, the 23 end of the mode control circuit is a state output end, the switch works in a conventional switching mode, the 20 end of the mode is disconnected with the power ground (y), the switch is switched from an off state to an on state, the 22 end of the input signal has different durations, the 23 end of the mode control circuit has different output modes, the 23 end of the mode control circuit is powered on, the 23 end of the mode control circuit is set to a high level, the 22 end of the input signal current does not exceed a set time, the 23 end of the mode control circuit is delayed after a certain time, the 23 end is delayed, the switch is turned to be turned to a low state, the switch is turned to be turned to a state, the mode is turned off state, and the mode is turned to be turned to a state, and the high state is turned off.

When the two switches are combined into a double-control system, two connecting wires are arranged between the two switches, one wire is connected with the P ends of the two switches, if the 4 ends and the 7 ends of the self-adaptive power supply circuit are connected according to the solid line in the figure 1, the direct current ground (x) is communicated with the live wire input terminal L of the two switches, the other wire is connected with the live wire input terminal L of the two switches, if the self-adaptive power supply circuit is connected according to the broken line in the figure 1, the direct current ground (x) is communicated with the live wire output terminal L1 of the two switches, the other wire is connected with the live wire output terminal L1 of the two switches, so that the 12 ends of the touch sensing circuits in the two switches are communicated, the 13 ends of the touch sensing circuit in the auxiliary switch are also communicated with the touch sensing circuit in the main switch in parallel, the touch sensing circuits of the main switch and the auxiliary switch are respectively independently used for transmitting signals to the sensing signal detection circuit of the main switch, the working state of the main switch is controlled, the auxiliary switch can be increased, double-control or multi-control mechanical switch with single-live wire control can be replaced, and wiring is not needed.

The induction signal detection circuit and the touch induction circuit of the switch comprise a wrong wiring protection circuit, and wiring errors in double-control or multi-control installation can be avoided.

The beneficial effects of the invention are as follows: the single-live wire capacitive touch switch can normally control the load with the power as low as 0.2W no matter single control or double control, so that the flickering or dim light phenomenon of 'continuous off' when the LED lamp and the energy-saving lamp are controlled to be in the off state is greatly improved, the switch can be selected for time delay and non-time delay occasions according to the needs, and the switch can be used for controlling illumination lamps such as a low-power LED lamp and an electronic energy-saving lamp. The two or more switches can form a double-control or multi-control system, on the premise that the switches work stably, connecting wires between the two switches can be obviously increased, the double-control or multi-control mechanical switch controlled by a single live wire is replaced without rewiring, the switch is not damaged due to wiring errors in installation, and quality protection disputes caused by the damage of the switch due to the wiring errors in installation can be avoided. The switch has wide adaptive voltage range and can be used for universal 110V and 220V alternating current voltages. The invention has strong universality, can be applied to more occasions, can control more lamps and is beneficial to popularization of the capacitive touch switch.

Drawings

Fig. 1 is a schematic block diagram of a single-live off micro-current mode selectable dual-control capacitive touch switch.

FIG. 2 is a schematic diagram of one of the dual control connection circuits of the adaptive power supply circuit of FIG. 1, wherein the 4-terminal and 7-terminal are connected by a dotted line

FIG. 3 is a schematic diagram showing two of the dual control connection circuits of the adaptive power supply circuit of FIG. 1, wherein the two ends of the dual control connection circuits are connected by the dotted line at the 4-end and the 7-end of the adaptive power supply circuit

FIG. 4 is a schematic diagram of one of the dual control connection circuits of the adaptive power supply circuit of FIG. 1, in which the 4-terminal and the 7-terminal are connected by a solid line

FIG. 5 is a schematic diagram showing two of the dual control connection circuits of the adaptive power supply circuit of FIG. 1, wherein the 4-terminal and 7-terminal are connected by solid lines

Fig. 6 is a circuit diagram of a power switch circuit.

Fig. 7 is a circuit diagram of an adaptive power supply circuit.

Fig. 8A is a circuit diagram of the sensing signal detection circuit.

FIG. 8B is a circuit diagram of an inductive signal detection circuit including a miswiring protection circuit.

Fig. 9A is a circuit diagram of a touch sensing circuit.

FIG. 9B is a circuit diagram of a touch sensing circuit including a miswiring protection circuit.

Fig. 10 is a circuit diagram of an on-state power supply circuit.

Fig. 11 is a circuit diagram of a mode control circuit.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

The connection of the power switching circuit is seen in fig. 1 and 6. The first anode of the bidirectional thyristor VS01 is connected with the end 1, the second anode is connected with the end 3, the control electrode is connected with the end 2, and a resistor R01 is connected between the control electrode and the second anode. The end 1 is communicated with the terminal L, the end 3 is communicated with the terminal L1, and the end 2 is connected with the end 19 of the on-state power supply circuit.

Connection of the adaptive power supply circuit see fig. 1 and 7. The self-adaptive power supply circuit carries out half-wave rectification and electricity taking through alternating voltage between the wiring terminals L and L1, and comprises a rectification circuit, a constant voltage power supply circuit and an on-state current supplementing circuit, wherein the 4 end is an alternating current power supply input end, the 7 end is a direct current power supply ground (x), the 4 end is connected with the wiring terminal L, the 7 end is connected with the wiring terminal L1 (the dotted line connection mode in the attached drawing 1), the 7 end is also connected with the wiring terminal L1 (the solid line connection mode in the attached drawing 1), the rectified pulsating direct current power supply outputs a low-voltage direct current power supply through the constant voltage power supply, and the on-state current supplementing circuit supplements current to a constant voltage power supply reference voltage end when in an on state, so that the constant voltage power supply voltage output is kept normal. The rectification circuit comprises a rectification diode D11, the constant voltage power supply circuit comprises triodes V11 and V12, a resistor R11, a capacitor C11 and a voltage stabilizing diode DW11 for providing reference voltage, and the on-state current supplementing circuit comprises an isolation diode D12 and a resistor R12. The positive pole of rectifier diode D11 connects 4 ends, the negative pole connects triode V11, the collecting electrode of V12, triode V11's emission connects triode V12's base, triode V11's collecting electrode and base link resistor R11, triode V11's base is to 7 end connection electric capacity C11, zener diode DW11 positive pole connects 7 ends, the negative pole connects triode V11's base, triode V12's collecting electrode is low-voltage direct current power output end, communicate with 6 ends, connect electric capacity C12 to 7 ends, resistor R12 one end connects zener diode DW11 negative pole, the negative pole of other termination isolation diode D12, the positive pole of isolation diode D12 connects 5 ends, 5 ends and on-state power circuit's low-voltage direct current power output 15 communicates with each other, on-state power circuit's low-voltage direct current through isolation diode D12 supplies electric current for constant voltage power reference voltage end through resistance R12.

The connection of the sensing signal detection circuit is shown in fig. 1 and 8A. The 8 end of the induction signal detection circuit is connected with the low-voltage direct current power supply output end 6 of the self-adaptive power supply circuit, the 9 end is a switch signal current output end, the 10 end is a touch signal detection end, and the 11 end is connected with the self-adaptive power supply ground (x). When the current flowing out from the 10 end reaches a certain value, the 9 end outputs signal current. The induction signal detection circuit comprises a current detection circuit and an anti-power-on interference circuit, the current detection circuit comprises a PNP triode V21, a capacitor C21 and a resistor R21, the anti-power-on interference circuit comprises a P channel field effect transistor V22, a resistor R22 and a capacitor C22, an emitter of the triode V21 is connected with an 8 end, a collector is connected with a 9 end, a capacitor C21 and a resistor R21 are connected between an emitter and a base, the base is communicated with a 10 end, a source of the field effect transistor V22 is connected with the emitter of the triode V21, a drain of the field effect transistor V21 is connected with the base of the triode V21, a source and a grid are connected with an indirect resistor R22, and a grid and an 11 are connected with the capacitor C22. When the power is on, the field effect transistor V22 is conducted, so that the problem that the triode V21 is conducted to turn on the switch due to the fact that the starting current of the touch sensing circuit connected with the 10 end is large can be avoided, and the switch can be ensured to be in the off state again after the power is off.

The connection of the sense signal detection circuit including the miswiring protection circuit is shown in fig. 8B. On the basis of the induction signal detection circuit shown in fig. 8A, diodes D21 and D22 are added, and a wiring error protection circuit formed by a self-recovery safety PTC21 is added. The diode D21 and the self-recovery safety PTC21 are connected in series with the base electrode and the 10 end of the triode V21, the positive electrode of the diode D21 is connected with the base electrode of the triode V21, one end of the self-recovery safety PTC21 is connected with the negative electrode of the diode D21, the other end of the self-recovery safety PTC21 is communicated with the 10 end, the positive electrode of the diode D22 is communicated with the 11 end, and the negative electrode of the diode D21 is connected with the negative electrode of the diode D21. Referring to fig. 1 and fig. 2 to fig. 5, when a wiring error occurs, a 220V ac voltage exists between the P end and the power ground (x) of the adaptive power supply circuit when a wiring error occurs and a switch is used for connecting a power supply live wire and a load live wire, and because the P end is communicated with the 10 end of the inductive signal detection circuit, the 11 end of the inductive signal detection circuit is communicated with the power ground (x) of the adaptive power supply circuit, 220V ac voltage exists between the 10 end and the 11 end of the inductive signal detection circuit in an off state, and when the phase of the ac voltage is 11 end+, 10 end-, current flows from the 11 end to the 10 end through the D22 and the PTC21 due to the clamping of the D22, the D22 cannot be overcurrent damage, and other elements in the inductive signal detection circuit cannot be overvoltage breakdown damage; when the phase of the alternating voltage is 10 end and 11 end, the current flows from 10 end to 11 end, and the current does not flow from 10 end to 11 end due to the isolation of D21 and D22, and the elements in the induction signal detection circuit are not damaged.

The connection of the touch sensing circuit is shown in fig. 1 and 9A. U31 is a micropower three-terminal voltage regulator (such as XC 6206P), U32 is a capacitance touch sensing chip (such as SD 223), U31 provides voltage-stabilized power for U32, diode D31 positive electrode connects 12 ends, resistor R35 is connected in series with negative electrode of diode D31 and positive electrode of capacitor C31, negative electrode of capacitor C31 connects 13 ends to each other, negative electrode of voltage-stabilized diode DW31 connects positive electrode of capacitor C31, positive electrode connects 13 ends to each other, PNP triode V32 emitter connects negative electrode of diode D31, collector connects positive electrode of capacitor C31, emitter and base connects resistor R36, base connects resistor R37 to drain electrode of field effect transistor V31, pin (3) of U31 is power input end, positive electrode of capacitor C31 connects 1 is voltage-stabilized power output end, power supply is provided for touch sensing chip U32, (2) pin is voltage-stabilized power ground, and 13 ends are connected to each other, capacitor C32 is connected between (1) pin and (2) pin of U31, terminal (1) of touch sensing chip connects 1, (4) pin (5) pin of LED31, (3) and (3) pin (3) of LED 32) connects 3) and negative electrode of LED 32 to positive electrode of LED 32, LED 32 connects 3 and LED 32, LED 32 connects positive electrode of LED 32 to LED 32, LED 32 connects positive electrode to LED 32, LED 32 connects LED 32 to LED 32, and LED 32 connects LED 32 to LED 32 has positive electrode to LED electrode 31. The light emitting diode LED31 is used for night indication and induction indication, when the touch switch is static, the light emitting diode LED31 is slightly bright, the light emitting diode LED31 outputs a high level through a current by the resistor R31, the touch switch panel is touched with the pin (1) of the U32, the field effect tube V31 is conducted, the resistor R32 is far smaller than the resistor R31, at the moment, the light emitting diode LED31 increases the current of the resistor R32, the light emitting diode LED31 is brighter, the 12 end and the 13 end can pass through larger current, so the 12 end is a power supply end of the touch sensing circuit and is a touch sensing signal output end. The zener diode DW31 is used to prevent the influence of the ac induced voltage generated by the signal transmission line between the two switches on the circuit when the two switches form a dual control system. The DW31 voltage stabilizing value is larger than the direct current voltage input at the 12 end, and the direct current power supply is not influenced. V32, D32, R35, R36 and R37 form a double-control distance-increasing circuit, which is used for forming a double-control system by two switches, under the on-state condition, when the touch sensing circuit is static, the resistor R35 can weaken the influence of alternating voltage generated by the internal resistance of one conducting wire of load current between the two switches on the circuit, and when the touch sensing circuit is dynamic, the V32 can rapidly supplement electric energy. On the premise that the double-control distance-increasing circuit in the touch sensing circuit can enable the switches to work stably, connecting wires between the two switches can be obviously increased to be more than 100 meters. If the wires between the two switches of the double control are shorter, D32, V32, R35, R36 and R37 can be removed, one end of R32 is directly connected with the cathode of the LED31, and the anode of C31 is directly connected with the cathode of D31.

A connection of a touch sensing circuit including a miswiring protection circuit is shown in fig. 9B. In the touch sensing circuit shown in fig. 9A, an isolation diode D33, a current limiting element self-recovery safety PTC31, a voltage limiting element DW32 and a warning circuit are added, so that overcurrent and overvoltage damage of elements in the touch sensing circuit during miswiring can be prevented, and meanwhile, wiring errors can be warned. The light emitting diode LED32 is used for a misconnection warning. The self-recovery safety PTC31 is connected in series with the 12 end and the positive electrode of the diode D31, the positive electrode of the diode D33 is connected with the current outflow end of the self-recovery safety PTC31, the negative electrode is communicated with the positive electrode of the light-emitting diode LED31 and the positive electrode of the light-emitting diode LED32, the positive electrode of the voltage-stabilizing diode DW32 is connected with the negative electrode of the voltage-stabilizing diode DW31, the negative electrode is connected with the negative electrode of the diode D31, the positive electrode of the light-emitting diode LED32 is connected with the negative electrode of the voltage-stabilizing diode DW33, the positive electrode of the voltage-stabilizing diode DW33 is connected with one end of the resistor R38, and the other end of the resistor R38 is communicated with the 13 end. When the wiring is correct, the voltage stabilizing value of the DW33 is larger than the input voltage of the 12 terminal, no current passes through the DW33, and the LED32 does not emit light. Referring to fig. 1 and fig. 2 to fig. 5, when a wiring error occurs, a terminal error of a switch for double-control wiring is connected to a power live wire and a load live wire, 220V ac voltage exists between a P end and a power ground (x) of the adaptive power circuit, and a 13 end of the touch sensing circuit is communicated with the power ground (x) of the adaptive power circuit because the P end is communicated with the 12 end of the touch sensing circuit, so that 220V ac voltage exists between the 12 end and the 13 end of the touch sensing circuit in an off state. When the phase of the alternating voltage is 13 end & lt+ & gt and 12 end & lt- & gt, current cannot flow from 13 end to 12 end due to isolation of D31 and D33, and elements in the touch sensing circuit cannot be damaged; when the phase of the alternating voltage is 12 end+ and 13 end-, current flows from 12 end to 13 end, current flows from 12 end, current is limited by self-recovery safety PTC31, D31, DW32 and DW31 are limited in voltage, elements in the touch sensing circuit cannot be damaged by overcurrent and overvoltage, DW33 is conducted at the moment, LED32 emits light, and wiring errors are warned.

The connection of the on-state power supply circuit is shown in fig. 1 and 10. The on-state power supply circuit is characterized in that the 14 end of the on-state power supply circuit is connected with the 1 end of the power switch circuit, the 19 end of the on-state power supply circuit is connected with the 2 end of the power switch circuit, the 18 end of the on-state power supply circuit is a direct current power supply ground (y), the 15 end of the on-state power supply circuit is a low-voltage direct current power supply output end, the 17 end of the on-state power supply circuit is a starting current input end, the 9 end of the on-state power supply circuit is connected with the sensing signal detection circuit, the 16 end of the on-state power supply circuit is a holding current input end, and the 23 end of the on-state power supply circuit is connected with the mode control circuit. The AC input end of the rectifier bridge ZD41 is connected with 14 ends and 19 ends, the negative electrode of the DC output end is the DC power ground (y) of an on-state power supply and is communicated with 18 ends, the positive electrode of the DC output end is connected with the negative electrode of a voltage stabilizing diode DW41, the positive electrode of the voltage stabilizing diode DW41 is connected with the current input end of an electronic switch, the electronic switch comprises PNP triodes V41 and V42, an NPN triode V43 controls the on-off of the electronic switch, the emitting electrode of the triode V41 is connected with the positive electrode of the voltage stabilizing diode DW41, the base electrode and the emitting electrode are connected with a resistor R42, the base electrode is connected with the collector electrode of the triode V43 through a resistor R44, the collector electrode is communicated with the low-voltage DC power output end 15, the power ground (y) is connected with a capacitor C41, the base electrode and the emitting electrode are connected with a resistor R43, the base electrode is connected with the collector electrode of the triode V43 in series with a resistor R45, one end of the resistor R45 is connected with the base electrode of the triode V42, the other end of the resistor D41 is connected with the positive electrode of the diode D41, the negative electrode of the triode D41 is connected with the negative electrode of the triode V43, the emitting electrode of the emitting electrode is connected with the base electrode of the triode V43, and the collector electrode of the collector electrode is connected with the capacitor is grounded with the capacitor C46. The transistors V41 and V42 are connected in series to reduce the voltage-withstanding requirement, if the voltage-withstanding is enough, the transistor V42, the resistor R43, the resistor R45 and the diode D41 in the dotted line frame can be removed, the collector of the transistor V41 is directly connected with the low-voltage direct-current power supply output end 15, the electronic switch is connected with a voltage limiting circuit consisting of a unidirectional silicon controlled rectifier VS41, a voltage stabilizing diode DW42 and the resistor R41, the anode of the silicon controlled rectifier VS41 is connected with the current input end of the electronic switch, the cathode is grounded (y), the control electrode and the cathode are connected with the resistor R41, the anode of the voltage stabilizing diode DW42 is connected with the control electrode of the silicon controlled rectifier VS41, and the cathode is connected with the current output end of the electronic switch. The start-up current input terminal 17 is connected in series with the resistor R47 and the capacitor C42 to the base of the transistor V43, and keeps the current input terminal 16 in communication with the base of the transistor V43.

The connection of the mode control circuit is seen in fig. 1 and 11. The mode control circuit comprises a voltage stabilizer U51, a double-D trigger U52 and a double-D trigger U51, wherein the U51 provides a voltage-stabilized power supply for the U52, a diode D51 is an isolation diode, a capacitor C51 is an energy storage capacitor, the anode of the diode D51 is connected with the 24 end, the cathode of the diode D51 is connected with the power input end of the U51, the capacitor C51 is connected with the cathode of the diode D51 and the power ground (y), and the capacitor C52 is connected between the power output end of the U51 and the power ground (y); u52 includes flip-flop U52-1 and flip-flop U52-2,1S, 1R, 1D, 1CP, 1Q, -1Q are the setting end, reset end, data input end, clock input end, original code output end, the opposite code output end of flip-flop U52-1 respectively, 2S, 2R, 2D, 2CP, 2Q, -2Q are the setting end, reset end, data input end, clock input end, original code output end, opposite code output end of flip-flop U52-2 respectively, 1D end of flip-flop U52-1 and 2D end of flip-flop U52-2, 2CP end is connected to power ground (y), diode D52, resistor R51, resistor R52, capacitor C53, capacitor C54 constitute the power-on setting circuit of U52-1 and U52-2, 2S end is communicated with 1S end, diode D52 connects 24 end with the positive pole, negative pole is connected with one end of resistor R51, one end of capacitor C53, the other end of resistor R51, capacitor C53 is connected to power ground (y), the cathode of the diode D52 is connected with the capacitor C54 between the 1S end and the 1S end, the 1S end is connected with the resistor R52 to the power ground (y), one end of the resistor R58 is connected with the 1Q end, the other end is connected with the anode of the diode D56, the cathode of the diode D56 is connected with the 23 end, one end of the resistor R53 is connected with the 22 end, the other end is connected with the cathode of the voltage stabilizing diode DW51, the anode of the voltage stabilizing diode DW51 is connected with the power ground (y), one end of the resistor R54 and one end of the capacitor C56 are connected with the cathode of the voltage stabilizing diode DW51, the other end is connected with the 1CP end, the 1CP end is connected with the resistor R55 to the power ground (y), the two ends of the resistor R56 are connected with the 1Q end and the 1R end, the cathode of the diode D53 is connected with the 1Q end, the anode is connected with the 1R end, the end of the resistor R57 is connected with the cathode of the voltage stabilizing diode DW51, the other end is connected with a 2R end, the positive electrode of the diode D54 is connected with a 2R end, the negative electrode is connected with the negative electrode of the voltage stabilizing diode DW51, the 2R end is connected with a capacitor C58 to the power ground (y), the negative electrode of the diode D55 is connected with a 2Q end, the positive electrode is connected with a 1R end, one end of the capacitor C59 is connected with the 2Q end, one end is connected with the positive electrode of the diode D56, the 1R end is communicated with the 20 end, and a jumper short-circuit socket K is connected between the 20 end and the 21 end. When the U52 is electrified, the 1S end and the 2S end are set, the output of the 1Q end and the output of the 2Q end are both 1, at the moment, the input signal current of the 22 end is high, the capacitor C57 is charged to the 1CP end to trigger invalidation, the 1S end is low, the input signal current of the 22 end is high again after the U52 is electrified, at the moment, the capacitor C57 is charged to the 1CP end to trigger the U52-1 to overturn, and the 1Q output is 0, so that the switch control is realized. When the 20 end is disconnected from the power ground (y), the output of the 1Q end is 1 after the U52 works, the capacitor C55 is charged through the resistor R56, after a certain time, the U52-1 is reset, the output of the 1Q end is 0, the delayed turn-off is realized, the U52 power-on working is realized, if the switch key is continuously touched, the 22 end continuously inputs signal current, the capacitor C58 is charged, the U52-2 is reset after a certain time, the 2Q output is 0, the 1R end is placed at a low potential by the diode D55, the delayed turn-off is released, meanwhile, the positive electrode of the diode D56 is instantly 0 by the capacitor C59, the output of the 23 end keeps current instantly interrupted, the switch is instantly turned off, the lamp light is shiny, the touch can be stopped, the switch is switched into a non-delayed working mode at the moment, and when the 20 end is connected with the power ground (y), the switch works in a non-delayed fixed mode.

When the terminals 4 and 7 of the adaptive power supply circuit of fig. 1 are connected to the terminal L and the terminal L1 by the dotted lines, the double control is wired as in fig. 2 or fig. 3. The wiring method of fig. 2 is: the power supply live wire is connected to the live wire input terminal L of the main switch, the load live wire is connected to the live wire output terminal L1 of the auxiliary switch, two connecting wires are arranged between the two switches, one connecting terminal L1 of the main switch and the terminal L1 of the auxiliary switch, and the other connecting terminal P of the main switch and the terminal P of the auxiliary switch are connected, so that the mechanical double-control switch is replaced by the connecting method without rewiring; the wiring method of fig. 3 is: the power live wire is connected to the live wire input terminal L of the main switch, the load live wire is connected to the live wire output terminal L1 of the main switch, two connecting wires between the two switches, one connecting the terminal L1 of the main switch and the terminal L1 of the auxiliary switch, and the other connecting the terminal P of the main switch and the terminal P of the auxiliary switch, and the connecting method cannot replace a mechanical double-control switch.

When terminals 4 and 7 of the adaptive power supply circuit of fig. 1 are connected to the terminal L and the terminal L1 in solid lines, the double control is wired as in fig. 4 or fig. 5. The wiring method of fig. 4 is: the power supply live wire is connected to the live wire input terminal L of the auxiliary switch, the load live wire is connected to the live wire output terminal L1 of the main switch, two connecting wires between the two switches, one connecting the terminal L of the main switch and the terminal L of the auxiliary switch, the other connecting the terminal P of the main switch and the terminal P of the auxiliary switch, the connecting method replaces the mechanical double-control switch without rewiring; the wiring method of fig. 5 is: the power live wire is connected to the live wire input terminal L of the main switch, the load live wire is connected to the live wire output terminal L1 of the main switch, two connecting wires between the two switches, one connecting the terminal L of the main switch and the terminal L of the auxiliary switch, and the other connecting the terminal P of the main switch and the terminal P of the auxiliary switch, and the connecting method cannot replace a mechanical double-control switch.

The circuit connection of the double-control method is that only the touch sensing circuit in the auxiliary switch has a power supply loop to work, and other circuits do not have the power supply loop to work, and only the touch sensing circuit in the auxiliary switch is needed, so that the auxiliary switch in the double-control or multi-control system can simplify the circuit production and reduce the cost.

The single-live wire switching state micro-current mode selectable double-control capacitive touch switch has the advantages that when the single-live wire switching state micro-current mode selectable double-control capacitive touch switch is in a 220V alternating current voltage, when the single-live wire switching state micro-current mode selectable double-control capacitive touch switch is in a switching state, the current does not exceed 12.5uA when one switch is used as the single-control switch, and the current does not exceed 22uA when the two switches form a double-control system. When in an off state, the self-adaptive power supply provides power for the induction signal detection circuit and the touch induction circuit, current passes through the power supply, and no current passes through other circuits. Referring to fig. 10 and 11, the dc output end of the rectifier bridge ZD41 in the on-state power supply circuit has no filter capacitor, when in the off state, the triode V43 has no base current cut-off, the triodes V41 and V42 are cut-off, no current passes through the dc loop of the rectifier bridge ZD41, and the low-voltage dc power supply output end 15 of the on-state power supply circuit has no voltage output, so that the power consumption of the on-state power supply circuit is zero; since the mode control circuit is powered by the on-state power supply circuit, the power consumption of the mode control circuit is zero in the off state. Referring to fig. 9A, the input voltage at the 12 terminal of the touch sensing circuit is about 5V, the voltage stabilizing value of the dw31 is greater than 5V, and no current passes through the wiring under normal conditions, so that during static state, the consumed current of the touch sensing circuit has a current flowing through the R31 at night through the indicating circuit, a static current of the U31, and a static current of the U32. When R31 is 1MΩ, the LED31 has good night indication effect, and the current flowing through R31 is about

U31 is three-terminal voltage stabilizer with extremely low static power consumption, such as XC6206P with voltage stabilizing output of 3V, its static current is smaller than 1uA, U32 is capacitance touch sensing chip with extremely low static power consumption, such as SD223,3V power supply, its static current is smaller than 1.5uA, so, in static state, the current flowing through the touch sensing circuit is smaller than

5uA+1uA+1.5uA＝7.5uA

Referring to fig. 8A, the current input from the 8 terminal of the sensing signal detecting circuit is output from the 10 terminal after passing through the eb poles of R21 and V21, and R21 takes a proper value to make V21 in the off state, so that the adaptive power supply output current is the current flowing through the touch sensing circuit in the static state. Referring to fig. 7, since the output current of the adaptive power supply is very small in the off state, the base current provided by R11 to V11 in the off state can be sufficiently small, the adaptive power supply can normally supply power even when the value of R11 is 20mΩ, and the quiescent current of the half-wave rectified adaptive power supply is about 220V ac voltage

Therefore, when the switch is in the off state, the current passing through the single control is the sum of the static currents of the adaptive power supply circuit and the touch sensing circuit, which is about

5uA+7.5uA＝12.5uA

The current passed by the double control is the sum of the static currents of the adaptive power supply circuit and the two touch sensing circuits, which is about

5uA+7.5uA+7.5uA＝22uA

The single-live-wire off-state micro-current mode selectable double-control capacitive touch switch can normally control loads with power as low as 0.2W. The power switch is a silicon controlled rectifier, if the current passing through the load is smaller than the holding current of the silicon controlled rectifier, the switch is turned off, but the power of the load is as low as 0.2W under 220V alternating current voltage, and the passing current can be kept on although the passing current is small. Referring to fig. 1, fig. 6 and fig. 10, when the current passing through the load is smaller than the holding current of the thyristor VS01, the VS01 is turned off, but the on-state power supply circuit can still be kept on, at this time, the load current passes through the terminal L, the 14 end and the 19 end of the on-state power supply circuit, the 2 end, the 3 end and the L1 end of the power switch circuit form a loop.

The single-live wire switching state micro-current mode selectable double-control capacitive touch switch can adapt to the output voltage of a power supply to meet the working requirement of a touch sensing circuit, and the switch can work normally. Referring to fig. 7, in the off state, the load current of the adaptive power supply is the standby current of the touch sensing circuit, which is only a few microamps. Although the value of R11 is 20mΩ in order to reduce the standby current of the adaptive power supply, V11 and V12 form a composite tube, and the output current of the adaptive power supply can still meet the operation requirement of the touch sensing circuit when the ac voltage is as low as 60V. Therefore, the switch has a wide adaptive voltage range, and can be used for alternating voltages of 110V and 220V.

The circuit connection of the embodiment of the present invention is a preferred circuit under the design spirit of the present invention, and is not limited to the patent, and the equivalent element replacement and circuit connection made under the design idea of the present invention are still within the protection scope of the patent.

Claims

1. A single live wire off-state micro-current mode selectable double-control capacitive touch switch is characterized in that: the switch comprises three terminals L, L, P, L is a live wire input terminal of the switch, L1 is a live wire output terminal of the switch, P is a double-control signal wire terminal, the switch comprises a power switch circuit, a self-adaptive power supply circuit, an induction signal detection circuit, a touch induction circuit, an on-state power supply circuit and a mode control circuit, the 1 end of the power switch circuit is connected with L, the 3 end of the power switch circuit is connected with L1, the 2 end of the power switch circuit is a switch control end, the 19 end of the power switch circuit is connected with the on-state power supply circuit, and a switching device in the power switch circuit is a bidirectional silicon controlled rectifier; the 4 end and the 7 end of the self-adaptive power supply circuit are respectively connected with the wiring terminal L and the L1 for taking electricity, the 4 end is connected with the wiring terminal L, the 7 end is connected with the wiring terminal L1, or the 7 end is connected with the wiring terminal L, the 4 end is connected with the wiring terminal L1, the 7 end is the direct current ground (x) of the self-adaptive power supply circuit, the 5 end is connected with the 15 end of the on-state power supply circuit, the 6 end is the low-voltage direct current power supply output end of the self-adaptive power supply circuit, and after the switch is switched from the off state to the on state, the 15 end of the on-state power supply circuit outputs current to the 5 end of the self-adaptive power supply circuit, so that the 6 end of the self-adaptive power supply circuit can normally provide power supply when the switch is in the on state; the sensing signal detection circuit is characterized in that the 8 end of the sensing signal detection circuit is a power input end and is connected with the 6 end of the self-adaptive power circuit, the 9 end of the sensing signal detection circuit is a switching signal current output end, the 10 end of the sensing signal detection circuit is a touch signal detection end and is communicated with the double-control signal line terminal P, the 11 end of the sensing signal detection circuit is connected with the direct current ground (x) of the self-adaptive power circuit, and the 9 end of the sensing signal detection circuit outputs a switching signal after detecting that the current of the touch sensing circuit is increased; the 12 end of the touch sensing circuit is connected with the 10 end of the sensing signal detection circuit, and the 13 end of the touch sensing circuit is connected with the direct current ground (x) of the self-adaptive power supply circuit; the end 14 and the end 19 of the on-state power supply circuit are respectively connected with the end 1 and the end 2 of the power switch circuit to obtain electricity, the end 15 is a low-voltage direct-current power supply output end of the on-state power supply circuit, the end 16 is a holding current input end, the end 17 is a starting current input end, the end 9 is connected with the induction signal detection circuit, the end 18 is a direct current ground (y) of the on-state power supply circuit, the on-state power supply circuit does not work when the switch is in an off state, the electric energy consumption is zero, the ends 14 and 19 do not have current passing, the end 17 inputs the current to start the on-state power supply circuit, the end 16 continuously inputs the current to keep working, so that the ends 14 and 19 of the on-state power supply circuit have current passing, and the current passing through the ends 14 and 19 can trigger the bidirectional controllable silicon in the power switch circuit to be conducted; the end 24 of the mode control circuit is a power input end, which is connected to the end 15 of the on-state power circuit, the end 21 is connected to the direct current ground (y) of the on-state power circuit, the end 22 is a switching signal current input end, which is connected to the end 9 of the sensing signal detection circuit, the end 23 is a holding current output end, which is communicated with the end 16 of the on-state power circuit, a function selection end 20 is arranged, when the end 20 is connected with the direct current ground (y) of the on-state power circuit, the mode control circuit is equivalent to a bistable circuit, the end 22 is a trigger end, the end 23 is a state output end, the switch works in a normal switch mode, when the end 20 is disconnected with the direct current ground (y) of the on-state power circuit, the switch is switched from an off state to an on state, the duration of the input signal current of the end 22 is different, the end 23 has different output modes, one is that the end 23 is set to be high level when the mode control circuit is electrified, the input signal current of the end 22 does not exceed the set time, the end 23 outputs low level after delayed for a certain time, the switch is turned to be off state, one is that the mode is a delayed switch mode, the end 23 is set to be high level when the mode control circuit is electrified, the end 22 continuously inputs the signal current exceeding the set time, the end 23 keeps the high level state unchanged, the mode is a delayed-to-non-delayed mode, the end 22 inputs the signal current again after the switch is turned to be on state, no matter the mode is a delayed or non-delayed mode, the end 23 outputs low level, and the switch is turned to be off state.

2. The single-live off micro-current mode selectable dual-control capacitive touch switch of claim 1, wherein: when the two switches form a double-control system, two connecting wires are arranged between the two switches, one wire is connected with the P end of the two switches, if the direct current ground (x) of the self-adaptive power supply circuit is communicated with the live wire input terminal L, the other wire is connected with the live wire input terminal L of the two switches, and if the direct current ground (x) of the self-adaptive power supply circuit is communicated with the live wire output terminal L1, the other wire is connected with the live wire output terminal L1 of the two switches, so that the 12 ends of the touch sensing circuits in the two switches are communicated, the 13 ends of the touch sensing circuits in the auxiliary switches are also communicated, and the touch sensing circuits in the auxiliary switches are connected with the touch sensing circuits in parallel; the touch sensing circuit comprises a capacitive touch sensing chip, and the 12 end is a power input end of the touch sensing circuit and is also an sensing signal output end; the touch sensing circuits of the main switch and the auxiliary switch are sensing signal detection circuits which respectively and independently transmit signals to the main switch and control the working state of the main switch; the auxiliary switch is added to realize multi-control, and the double-control or multi-control mechanical switch for replacing single-live wire control does not need to be rewired.

3. The single-live off micro-current mode selectable dual-control capacitive touch switch of claim 1, wherein: the on-state power supply circuit is characterized in that bridge rectification is carried out through alternating voltage between a 1 end and a 2 end of the power switch circuit, an alternating input end of a rectifier bridge ZD41 is connected with the 1 end and the 2 end of the power switch circuit through a 14 end and a 19 end, a negative electrode of a direct output end is a direct current ground (y) of the on-state power supply circuit and is communicated with an 18 end, a positive electrode of the direct current output end is connected with a negative electrode of a voltage stabilizing diode DW41, a positive electrode of the voltage stabilizing diode DW41 is connected with a current input end of an electronic switch, a current output end of the electronic switch is communicated with the 15 end, and a capacitor C41 is connected to the direct current ground (y) of the on-state power supply circuit; the electronic switch is connected with a voltage limiting circuit consisting of a unidirectional silicon controlled rectifier VS41, a voltage stabilizing diode DW42 and a resistor R41, the anode of the silicon controlled rectifier VS41 is connected with the current input end of the electronic switch, the cathode is connected with the direct current ground (y) of the on-state power supply circuit, the control electrode and the cathode are connected with the resistor R41, the anode of the voltage stabilizing diode DW42 is connected with the control electrode of the silicon controlled rectifier VS41, and the cathode is connected with the current output end of the electronic switch; the triode V43 controls the on-off of the electronic switch, the base electrode is communicated with the holding current input end 16, and is connected with the resistor R47 and the capacitor C42 in series to the starting current input end 17, and the emitter electrode is connected with the resistor R46 and the capacitor C43 and is connected with the direct current ground (y) of the on-state power supply circuit.

4. The single-live off micro-current mode selectable dual-control capacitive touch switch of claim 1, wherein: the self-adaptive power supply circuit comprises a rectification circuit, a constant voltage power supply circuit and an on-state current supplementing circuit, wherein the rectified pulsating direct current power supply outputs a low-voltage direct current power supply through the constant voltage power supply, the on-state current supplementing circuit supplements current to a reference voltage end of the constant voltage power supply when in an on state, the constant voltage power supply circuit keeps normal voltage output, the rectification circuit comprises a rectification diode D11, V12, a resistor R11, a capacitor C11 and a voltage stabilizing diode DW11 for providing reference voltage, the on-state current supplementing circuit comprises an isolation diode D12 and a resistor R12, the positive electrode of the rectification diode D11 is connected with the 4 end, the negative electrode of the rectification diode D11 is connected with the collector of a triode V11 and a collector of a triode V12, the emitting end of the triode V11 is connected with the base of the triode V12, the collector of the triode V11 is connected with the 7 end of the capacitor C11, the negative electrode of the voltage stabilizing diode DW11 is connected with the base of the triode V11, the low-voltage direct current power supply output end is communicated with the 6 end, the negative electrode of the capacitor C12 is connected with the positive electrode of the resistor D12, and the negative electrode of the isolation diode D12 is connected with the other end of the voltage stabilizing diode D5.

5. The single-live off micro-current mode selectable dual-control capacitive touch switch of claim 1, wherein: the induction signal detection circuit comprises a current detection circuit and an anti-power-on interference circuit, the current detection circuit comprises a PNP triode V21, a capacitor C21 and a resistor R21, the anti-power-on interference circuit comprises a P channel field effect transistor V22, the resistor R22 and the capacitor C22, an emitter electrode of the triode V21 is connected with an 8 end, a collector electrode is connected with a 9 end, the capacitor C21 and the resistor R21 are connected between the emitter electrode and a base electrode, the base electrode is communicated with a 10 end, a source electrode of the field effect transistor V22 is connected with the emitter electrode of the triode V21, a drain electrode is connected with the base electrode of the triode V21, a source electrode and a grid electrode are connected with the resistor R22, and a grid electrode and an 11 end are connected with the capacitor C22.

6. The single-live off micro-current mode selectable dual-control capacitive touch switch of claim 1, wherein: the touch sensing circuit comprises a micro-power consumption three-terminal voltage stabilizer U31, a capacitance touch sensing chip U32, U31 provides a voltage stabilizing power supply for the U32, the positive electrode of a diode D31 is connected with the 12 end, the negative electrode is connected with the positive electrode of a capacitor C31, the positive electrode of the capacitor C31 is connected with the U31 power input end, the negative electrode is communicated with the 13 end, the negative electrode of a voltage stabilizing diode DW31 is connected with the positive electrode of the capacitor C31, the positive electrode is communicated with the 13 end, an induction signal output by the U32 is input to the grid electrode of an N-channel field effect tube V31 through a resistor R33, the source electrode of the field effect tube V31 is communicated with the 13 end, the drain electrode is connected with the negative electrode of the resistor R32 in series to the negative electrode of the light emitting diode LED31, the positive electrode of the light emitting diode LED31 is connected with the positive electrode of the diode D31, and the negative electrode is connected with the resistor R31 to the 13 end.

7. The single-live off micro-current mode selectable dual-control capacitive touch switch of claim 6, wherein: the double-control distance increasing circuit comprises a PNP triode V32, a diode D32, resistors R35, R36 and R37, wherein the resistor R35 is connected in series with the cathode of the diode D31 and the anode of a capacitor C31, the emitter of the PNP triode V32 is connected with the cathode of the diode D31, the collector is connected with the anode of the capacitor C31, the emitter and the base are connected with the resistor R36, the base is connected with the drain electrode of the field effect transistor V31 from the resistor R37, and the diode D32 is connected with the cathode of the LED31 from the resistor R32 in series.

8. The single-live off micro-current mode selectable dual-control capacitive touch switch of claim 1, wherein: the LED lamp comprises a miswiring protection circuit and a miswiring warning circuit, wherein a double-control or multi-control system is formed by two or more switches, the miswiring protection circuit can avoid damage to a touch sensing circuit and a sensing signal detection circuit element during installation, and meanwhile, light warning can be carried out, the miswiring protection circuit comprises isolating diodes D21, D22, D31 and D33, current limiting self-recovery safety PTC21 and PTC31, voltage limiting voltage stabilizing diodes DW31 and DW32, the positive electrode of the diode D21 is connected with the base electrode of a triode V21, one end of the self-recovery safety PTC21 is connected with the negative electrode of the diode D21, the other end of the self-recovery safety PTC21 is communicated with the 10 end, the positive electrode of the diode D22 is communicated with the 11 end of the diode D21, the negative electrode of the self-recovery safety PTC31 is connected with the positive electrode of the diode D31 in series, the positive electrode of the diode D33 is connected with the current outflow end of the self-recovery safety PTC31, the negative electrode of the LED31 is communicated with the positive electrode of the LED32, the positive electrode of the voltage stabilizing diode DW32 is connected with the negative electrode of the diode D31, and the negative electrode of the self-recovery safety PTC31 is connected with the negative electrode of the diode DW 31; the miswiring warning circuit comprises a Light Emitting Diode (LED) 32, a voltage stabilizing diode (DW 33) and a resistor (R38), wherein the positive electrode of the LED32 is connected with the negative electrode of a diode D33, the negative electrode is connected with the negative electrode of the voltage stabilizing diode (DW 33), the positive electrode of the voltage stabilizing diode (DW 33) is connected with one end of the resistor (R38), and the other end of the resistor (R38) is communicated with the end (13).

9. The single-live off micro-current mode selectable dual-control capacitive touch switch of claim 1, wherein: the mode control circuit comprises an isolation diode D51, an energy storage capacitor C51, a voltage stabilizer U51 and double-D triggers U52 and U51, wherein the U52 is provided with a voltage-stabilized power supply, the anode of the diode D51 is connected with the 24 end, the cathode of the diode D51 is connected with the power input end of the U51, and the capacitor C51 is connected with the cathode of the diode D51 and the direct current ground (y) of the on-state power supply circuit; u52 includes flip-flop U52-1 and flip-flop U52-2,1S, 1R, 1D, 1CP, 1Q are the setting end, reset end, data input end, clock input end, primary code output end of flip-flop U52-1 respectively, 2S, 2R, 2D, 2CP, 2Q are the setting end, reset end, data input end, clock input end, primary code output end of flip-flop U52-2 respectively, 1D end of flip-flop U52-1 and 2D end of flip-flop U52-2, 2CP end is connected with DC ground (y) of on-state power supply circuit, diode D52, resistor R51, resistor R52, capacitor C53, capacitor C54 constitute the power-on setting circuit of U52-1 and U52-2, 2S end is communicated with 1S end, diode D52 connects 24 end, the negative pole is connected with one end of resistor R51, the other end of resistor R51, capacitor C53 is connected with DC ground (y) of on-state power supply circuit, the cathode of the diode D52 is connected with the capacitor C54 between the 1S end and the 1S end, the 1S end is connected with the resistor R52 to the direct current ground (y) of the on-state power supply circuit, one end of the resistor R58 is connected with the 1Q end, the other end is connected with the anode of the diode D56, the cathode of the diode D56 is connected with the 23 end, one end of the resistor R53 is connected with the 22 end, the other end is connected with the cathode of the voltage stabilizing diode DW51, one end of the resistor R54 and one end of the capacitor C56 are connected with the cathode of the voltage stabilizing diode DW51, the other end is connected with the direct current ground (y) of the on-state power supply circuit, one end of the capacitor C57 is connected with the cathode of the voltage stabilizing diode DW51, the other end is connected with the 1CP end, the 1CP end is connected with the direct current ground (y) of the on-state power supply circuit to the resistor R55, the 1R end is connected with the capacitor C55 to the direct current ground (y) of the on-state power supply circuit, the two ends of the resistor R56 are connected with the 1Q end and the 1R end, the cathode of the diode D53 is connected with the 1Q end, the anode is connected with the 1R end, one end of the resistor R57 is connected with the cathode of the zener diode DW51, the other end is connected with the 2R end, the anode of the diode D54 is connected with the 2R end, the cathode is connected with the cathode of the zener diode DW51, the 2R end is connected with the capacitor C58 to the direct current ground (y) of the on-state power supply circuit, the cathode of the diode D55 is connected with the 2Q end, the anode is connected with the 1R end, one end of the capacitor C59 is connected with the 2Q end, one end is connected with the anode of the diode D56, the 1R end is communicated with the 20 end, and a jumper short-circuit socket K is connected between the 20 end and the 21 end.