CN212083962U - Switching circuit, intelligent switch and control system - Google Patents

Abstract

The present disclosure provides a switching circuit, an intelligent switch and a control system. The switching circuit includes: the wireless communication module, the switch module, switch on get electric circuit, energy storage circuit and break off get electric circuit. The switch module is connected with a load, and the load is connected with a zero line; the energy storage circuit is connected with the wireless communication module; the input end of the conduction electricity-taking circuit is connected with a live wire, the first load connecting end is connected with the switch module, the first power supply end is connected with the energy storage circuit, the conduction electricity-taking circuit is used for responding to the conduction of the switch module, and the first power supply end outputs first current to the energy storage circuit; the input end of the disconnection electricity-taking circuit is connected with the live wire, the second load connecting end is connected between the load and the switch module, the second power supply end is connected with the energy storage circuit, the disconnection electricity-taking circuit is used for responding to disconnection of the switch module, the second power supply end outputs second current to the energy storage circuit, and the second current is smaller than the first current. The switching circuit can avoid the load operation under the condition that the switching module is disconnected.

Description

Switching circuit, intelligent switch and control system

Technical Field

The disclosure relates to the technical field of intelligent switches, in particular to a switch circuit, an intelligent switch and a control system.

Background

Along with the vigorous development of the intelligent home industry, the intelligent electrical appliances are more and more popularized, the traditional mechanical switch cannot adapt to the use of the intelligent electrical appliances, and an intelligent switch with a wireless communication module appears in due course. However, most of the existing switch wiring is single live wire wiring, so that the intelligent switch needs to be connected with a zero line of an intelligent electric appliance by virtue of the zero line, for example, the intelligent switch is connected with the zero line through a lamp, and thus, current can also pass through the lamp in a lamp-off state. When the current is larger, the lamp can flicker, which is commonly called as 'ghost fire'. Therefore, it is important to provide a switching circuit and an intelligent switch capable of solving this problem.

SUMMERY OF THE UTILITY MODEL

The present disclosure provides an improved switching circuit, intelligent switch and control system.

One aspect of the present disclosure provides a switching circuit, including:

a wireless communication module;

the switch module is connected with a load, and the load is connected with a zero line;

the energy storage circuit is connected with the wireless communication module;

the input end of the conduction power-taking circuit is connected with the live wire, the conduction power-taking circuit comprises a first load connecting end and a first power supply end, the first load connecting end is connected with the switch module, the first power supply end is connected with the energy storage circuit, the conduction power-taking circuit is used for responding to the conduction of the switch module, and the first power supply end outputs a first current to the energy storage circuit; and

the power-taking circuit is disconnected, the input end of the power-taking circuit is connected with the live wire, the power-taking circuit comprises a second load connecting end and a second power supply end, the second load connecting end is connected between the load and the switch module, the second power supply end is connected with the energy storage circuit, the power-taking circuit is disconnected and used for responding to the disconnection of the switch module, the second power supply end outputs second current to the energy storage circuit, and the second current is smaller than the first current.

Optionally, the power-taking circuit is disconnected and includes: the input end of the alternating current-direct current converter is connected with the live wire, the alternating current-direct current converter comprises a first output end and a second output end, the first output end serves as the second load connecting end, the second output end is connected with the constant current unit, the output end of the constant current unit serves as the second power supply end, and the constant current unit is used for outputting constant current serving as the second current.

Optionally, the power-taking circuit is disconnected and further includes: the input end of the voltage reducer is connected with the second output end of the alternating current-direct current converter, and the output end of the voltage reducer is connected with the constant current unit.

Optionally, the constant current unit includes: the circuit comprises a first triode, a second triode and a first resistor, wherein the first triode comprises a first base electrode, a first pole and a second pole, and the second triode comprises a second base electrode, a third pole and a fourth pole;

one end of the first resistor and the first pole are connected with the output end of the voltage reducer, the other end of the first resistor is connected with the third pole, the first base is connected to the resistor and between the third poles, the second pole is connected with the second base, and the fourth pole is connected with the energy storage circuit.

Optionally, the energy storage circuit includes an energy storage unit, the energy storage unit includes a super capacitor, one end of the super capacitor is connected to the wireless communication module, the first power supply end and the second power supply end, and the other end of the super capacitor is grounded.

Optionally, the tank circuit further comprises: and the filtering units are connected in parallel to two ends of the energy storage unit.

Optionally, the energy storage unit further includes a first one-way conduction member and a second one-way conduction member;

the first one-way conduction piece is connected between the first power supply end and the energy storage unit, and the conduction direction of the first one-way conduction piece is pointed to the energy storage unit from the first power supply end;

the second one-way conduction piece is connected between the second power supply end and the energy storage unit, and the conduction direction of the second one-way conduction piece is pointed to the energy storage unit by the second power supply end.

Optionally, the switch circuit further includes a control module, connected to the wireless communication module and the switch module, where the control module is configured to control the switch module to be turned on or off based on a signal output by the wireless communication module.

Another aspect of the present disclosure provides a smart switch including the switching circuit of any one of the above-mentioned.

Another aspect of the present disclosure provides a control system, including:

the intelligent switch mentioned above is connected with a live wire;

the load is connected with the zero line and the intelligent switch; and

and the terminal is connected with the intelligent switch in a wireless network and is used for controlling the on-off of the intelligent switch.

The technical scheme provided by the disclosure at least has the following beneficial effects:

when the switch module is switched on, the power taking circuit is switched on to take power from the live wire and charge the energy storage circuit, and when the switch module is switched off, the power taking circuit is switched off to take power from the live wire and charge the energy storage circuit. Because the disconnection electricity-taking circuit is connected with the energy storage circuit instead of being directly connected with the wireless communication module, when the power of the wireless communication module is larger, the energy storage circuit directly outputs electric energy with larger power to the wireless communication module, so that the size of second current output to the energy storage circuit by the disconnection electricity-taking circuit cannot be influenced, the third current flowing through the load cannot be increased to the working current, and the load cannot work under the condition that the switch module is disconnected. And the second current is smaller than the first current, so that a third current flowing through the load is smaller, the power taking circuit is switched on to quickly charge the energy storage circuit when the switch module is switched on, and the power taking circuit is switched off to supplement the electric energy output by the energy storage circuit to the wireless communication module when the switch module is switched off.

Drawings

Fig. 1 is a schematic diagram of a switching circuit of a related art provided intelligent switch;

FIG. 2 illustrates a schematic diagram of a control system according to an exemplary embodiment of the present disclosure;

FIG. 3 is a schematic diagram illustrating a switching circuit of the intelligent switch according to an exemplary embodiment of the present disclosure;

FIG. 4 illustrates an equivalent circuit diagram of a switch module open in a switch circuit according to an exemplary embodiment of the present disclosure;

FIG. 5 illustrates a partial circuit diagram of a switching circuit according to an exemplary embodiment of the present disclosure;

fig. 6 is a flow chart illustrating a control method of a switching circuit according to an exemplary embodiment of the present disclosure.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in the description and claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. Unless otherwise indicated, the word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprises" or "comprising" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

As used in this disclosure and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

Fig. 1 is a schematic diagram of a switching circuit 100 of an intelligent switch provided in the related art. Referring to fig. 1, the switching circuit 100 includes: the wireless communication module 110, the switch module 120, the control module 130, the on-off power-taking circuit 140 and the off-off power-taking circuit 150. The switch module 120 is connected to the load 160, and the load 160 is connected to the neutral line N1. The on-state power-taking circuit 140 includes an input terminal, a first load connection terminal, and a first power supply terminal, and the off-state power-taking circuit 150 includes an input terminal, a second load connection terminal, and a second power supply terminal. The input end of the conduction power-taking circuit 140 is connected to the live line L1, the first load connection end is connected to the switch module 120, and the first power supply end is connected to the wireless communication module 110. The input end of the power-off and supply circuit 150 is connected to the live line L1, the second load connection end is connected between the load 160 and the switch module 120, and the second power supply end is connected to the wireless communication module 110.

When the control module 130 controls the switch module 120 to be turned on based on the on signal output by the wireless communication module 110, the on-off power-taking circuit 140 is turned on with the live line L1 and the neutral line N1, the on-off power-taking circuit 140 takes power and supplies power to the wireless communication module 110, and the load 160 works at the same time. When the control module 130 controls the switch module 120 to be switched off based on the off signal output by the wireless communication module 110, the power-off circuit 150 is switched on with the live line L1 and the neutral line N1, the power-off circuit 150 is switched off to supply power to the wireless communication module 110, and the load 160 stops working.

However, when the power of the wireless communication module 110 is large, the current flowing through the off-supply circuit 150 is large, which causes the off-supply circuit 150 to output a large current to the load 160, and thus the load 160 is likely to be in an operating state when the switch module 120 is turned off. When the load 160 is a lamp, a "ghost fire" phenomenon is caused.

To solve the above problems, the present disclosure provides a switching circuit, an intelligent switch and a control system, which are described in detail below with reference to the accompanying drawings:

FIG. 2 illustrates a schematic diagram of a control system according to an exemplary embodiment of the present disclosure. Some embodiments of the present disclosure provide a control system including a smart switch 200, a load 300, and a terminal 400. The intelligent switch 200 is connected with the live line L2, and the load 300 is connected with the neutral line N2 and the intelligent switch 200. That is, the smart switch 200 is a one-fire smart switch, and the smart switch 200 is looped by the neutral wire N2 on the load 300. The terminal 400 is connected with the intelligent switch 200 through a wireless network and used for controlling the on-off of the intelligent switch 200. When the terminal 400 controls the intelligent switch 200 to turn on the load 300 and the live line L2, the load 300 operates, and when the terminal 400 controls the intelligent switch 200 to turn off the load 300 and the live line L2, the load 300 stops operating.

Illustratively, the load 300 includes smart appliances such as light fixtures, curtains, and fans. The terminal 400 includes, but is not limited to: the intelligent mobile phone comprises a mobile phone, a tablet computer, an iPad, a digital broadcast terminal, a messaging device, a game console, a medical device, a fitness device, a personal digital assistant, an intelligent wearable device, an intelligent television, a sweeping robot, an intelligent sound box and the like.

In some embodiments, the smart switch 200 includes a switching circuit 201. Fig. 3 is a schematic diagram illustrating a switching circuit 201 of the intelligent switch 200 according to an exemplary embodiment of the present disclosure. Referring to fig. 3, the switching circuit 201 includes: the wireless communication module 210, the switch module 220, the energy storage circuit 230, the on-power-taking circuit 240 and the off-power-taking circuit 250.

The wireless communication module 210 is used for wirelessly connecting with the terminal 400 to realize interaction between the intelligent switch 200 and the terminal 400.

The switch module 220 is connected to a load 300, and the load 300 is connected to a neutral line N2.

The input end of the conduction power-taking circuit 240 is connected with the live line L2, the conduction power-taking circuit 240 includes a first load connection end and a first power supply end, the first load connection end is connected with the switch module 220, and the first power supply end is connected with the energy storage circuit 230. The conduction power-taking circuit 240 is configured to output a first current to the energy storage circuit 230 in response to the switch module 220 being turned on. That is, when the switch module 220 is turned on, the live line L2, the first load connection terminal of the conduction power-taking circuit 240, the switch module 220, the load 300, and the neutral line N2 form a loop, and the load 300 operates. The conduction power-taking circuit 240 takes power from the live line L2 and outputs a first current from the first power supply terminal to the energy storage circuit 230, so that the energy storage circuit 230 stores electric energy.

Illustratively, the conduction power-taking circuit 240 includes a switch 241, the switch 241 is connected to the live line L2 and the switch module 220, and the switch 241 is turned on in response to the switch module 220 being turned on, so as to short-circuit the disconnection power-taking circuit 250, and turn on the conduction power-taking circuit 240 to the live line L2 and the load 300. The switch 241 is opened in response to the switch module 220 being opened, which opens the conduction power taking circuit 240.

The input end of the power-off and supply circuit 250 is connected to the live line L2, the power-off and supply circuit 250 includes a second load connection end and a second power supply end, the second load connection end is connected between the load 300 and the switch module 220, and the second power supply end is connected to the energy storage circuit 230. The open power-taking circuit 250 is used for: in response to the switch module 220 being turned off, the second power supply terminal outputs a second current to the tank circuit 230, the second current being smaller than the first current. That is, when the switch module 220 is turned off, the live line L2, the second load connection terminal of the cut-off power-taking circuit 250, the load 300, and the neutral line N2 form a loop, but the load 300 does not operate. The disconnection power-taking circuit 250 takes power from the live line L2 and outputs a second current from the second power supply terminal to the energy storage circuit 230, so as to supplement the power output from the energy storage circuit 230 to the wireless communication module 210.

The third current in a loop formed by the live line L2, the second load connection end of the power-off circuit 250, the load 300 and the zero line N2 is in positive correlation with the second current. When the switching module 220 is turned off, when the third current flowing through the load 300 is just the working current of the load 300, the load 300 works, and the power-taking circuit 250 is turned off to output the current with the reference threshold to the energy-storing circuit 230. In the disclosed embodiment, the second current is less than the reference threshold, such that the third current flowing through the load 300 is less than the operating current of the load 300 and the load 300 does not operate. When the power of the wireless communication module 210 is high, the energy storage circuit 230 supplies power to the wireless communication module 210, but the disconnection power-taking circuit 250 directly supplies power to the wireless communication module 210, which does not affect the magnitude of the second current output from the second power supply terminal of the disconnection power-taking circuit 250 to the energy storage circuit 230, and the second current is smaller than the first current, so that the current flowing through the load 300 is smaller than the working current of the load 300. When the load 300 is a lamp, the phenomenon of "ghost fire" does not occur.

Based on the above, when the switch module 220 is turned on, the on-state power-taking circuit 240 takes power from the live line L2 and charges the energy storage circuit 230, and when the switch module 220 is turned off, the off-state power-taking circuit 250 takes power from the live line L2 and charges the energy storage circuit 230. Since the power-off circuit 250 is connected to the energy storage circuit 230 instead of being directly connected to the wireless communication module 210, when the power of the wireless communication module 210 is high, the energy storage circuit 230 directly outputs high-power electric energy to the wireless communication module 210, which does not affect the magnitude of the second current output from the power-off circuit 250 to the energy storage circuit 230, and thus does not increase the third current flowing through the load 300 to its working current, and further does not cause the load 300 to work when the switch module 220 is turned off. And the second current is smaller than the first current, which also makes the third current flowing through the load 300 smaller, when the switch module 220 is turned on, the power-taking circuit 240 is turned on to quickly charge the energy-storing circuit 230, and when the switch module 220 is turned off, the power-taking circuit 250 is turned off to supplement the electric energy output from the energy-storing circuit 230 to the wireless communication module 210.

Illustratively, when the load 300 is a lamp, since the current flowing through the lamp does not reach its operating current, the "ghost fire" phenomenon does not occur.

Fig. 4 is an equivalent circuit diagram illustrating the switch module 220 in the switch circuit 201 according to an exemplary embodiment of the present disclosure being turned off. In some embodiments, referring to fig. 4, the power supply and disconnection circuit 250 further includes an ac-dc converter 251 and a constant current unit 252, an input terminal of the ac-dc converter 251 is connected to the live line L2, the ac-dc converter 251 includes a first output terminal and a second output terminal, the first output terminal is used as a second load connection terminal, the first output terminal is connected to the load 300, the second output terminal is connected to the constant current unit 252, an output terminal of the constant current unit 252 is used as a second power supply terminal and connected to the energy storage circuit 230, and the constant current unit 252 is configured to output a constant current as a second current. It should be noted that the Current output from the first output terminal of the Alternating-Current-Direct-Current (AC-DC) converter 251 to the load 300 is not converted by the AC-DC converter 251. After the alternating current input by the live line L2 is converted into direct current by the alternating current-direct current converter 251, the direct current is output to the constant current unit 252, which facilitates the constant current unit 252 to output a constant current. When the switch module 220 is turned off, when the power of the wireless communication module 210 is high, the energy storage circuit 230 outputs high power to the wireless communication module 210, but the constant current unit 252 of the power-off circuit 250 outputs a constant current to the energy storage circuit 230, and the constant current does not change, so that the third current flowing through the load 300 does not change, and thus the load does not work.

In some embodiments, with continued reference to fig. 4, the disconnecting power taking circuit 250 further comprises: the input end of the voltage reducer 253 is connected to the second output end of the ac-dc converter 251, and the output end of the voltage reducer 253 is connected to the constant current unit 252. In this way, the voltage reducer 253 reduces the voltage of the dc output by the ac-dc converter 251 and outputs the reduced dc to the constant current unit 252, which is beneficial for the constant current unit 252 to output a small constant current, so that the third current flowing through the load 300 is small, and the load 300 does not work.

Illustratively, the voltage reducer 253 includes an LDO (Low drop out Regulator) or a DC-DC (Direct Current-Direct Current chopper).

In the embodiment of the present disclosure, the constant current unit 252 may be configured in various ways, and the following embodiments are given on the premise of simple structure:

fig. 5 illustrates a partial circuit diagram of a switch circuit 201 according to an exemplary embodiment of the present disclosure. In some embodiments, referring to fig. 5, the constant current unit 252 includes: the circuit comprises a first triode Q1, a second triode Q2 and a first resistor R1, wherein the first triode Q1 comprises a first base b1, a first pole and a second pole, and the second triode Q2 comprises a second base b2, a third pole and a fourth pole. One end and a first pole of the first resistor R1 are both connected to the output terminal OUT of the voltage reducer 253, the other end of the first resistor R1 is connected to a third pole, the first base b1 is connected between the first resistor R1 and the third pole, the second pole is connected to the second base b2, and the fourth pole outputs current to the wireless communication module 210. Thus, the voltage across the first resistor R1 is made to be approximately the voltage difference between the first pole and the first base b1, and the resistance value of the first resistor R1 is not changed, which makes the constant current unit 252 output a constant current.

Illustratively, the first transistor Q1 and the second transistor Q2 are both NPN transistors. The first pole of the first transistor Q1 is a first emitter e1, the second pole is a first collector c1, the third pole of the second transistor Q2 is a second emitter e2, and the fourth pole is a second collector c 2. One end of the first resistor R1 and the first emitter e1 of the first transistor Q1 are connected to the output terminal OUT of the voltage reducer 253, the other end of the first resistor R1 is connected to the second emitter e2, the first base b1 of the first transistor Q1 is connected between the first resistor R1 and the second emitter e2, the first collector c1 is connected to the second base b2, and the second collector c2 is connected to the energy storage circuit 230. In addition, the first base b1 may be further connected between the first resistor R1 and the second emitter e2 through a second resistor R2, the second base b2 may be further connected to the first collector c1 through a third resistor R3, and the first collector c1 may be further connected to the ground through a fourth resistor R4. Thus, the quotient of the voltage Vbe between the first base b1 and the first emitter e1 of the first transistor Q1 and the first resistor R1 is about a constant current output by the constant current unit 252. The constant current may be adjusted by adjusting the resistance of the first resistor R1 so that the current flowing through the load 300 is less than the operating current of the load 300.

In other embodiments, the first transistor Q1 and the second transistor Q2 are PNP transistors.

In some embodiments, with continued reference to fig. 5, the energy storage circuit 230 includes an energy storage unit 231, the energy storage unit 231 includes a super capacitor C1, one end of the super capacitor C1 is connected to the wireless communication module 210, the first power supply terminal of the power-taking circuit 240 is turned on, and the second power supply terminal of the power-taking circuit 250 is turned off, and the other end is grounded. When the switch module 220 is turned off, if the power consumption of the wireless communication module 210 in some working states is large, the super capacitor C1 supplies power to the wireless communication module 210 instead of directly supplying power to the wireless communication module 210 by turning off the power-taking circuit 250, so that the super capacitor C1 outputs a large current to the wireless communication module 210 to meet the working requirement of the wireless communication module 210, and the magnitude of the current output from the power-taking circuit 250 to the load 300 is not affected.

In some embodiments, with continued reference to fig. 5, the tank circuit 230 further comprises: and the filtering units 232 are connected in parallel to two ends of the energy storage unit 231 to play a role in filtering, so as to ensure that the super capacitor C1 stably supplies power to the wireless communication module 210. Illustratively, the filtering unit 232 includes at least two capacitors C2 connected in parallel across the super capacitor C1.

In some embodiments, with continued reference to fig. 5, the energy storage unit 231 further comprises a first unidirectional conducting piece 233 and a second unidirectional conducting piece 234; the first unidirectional conducting element 233 is connected between the first power supply terminal of the conducting and power-taking circuit 240 and the energy storage unit 231, and the conducting direction of the first unidirectional conducting element 233 is directed from the first power supply terminal to the energy storage unit 231. The second unidirectional conducting element 234 is connected between the second power supply terminal of the power-off circuit 250 and the energy storage unit 231, and the conducting direction of the second unidirectional conducting element 234 is directed from the second power supply terminal to the energy storage unit 231. When the power-taking circuit 240 is turned on to supply power to the energy storage unit 231, the second unidirectional conducting element 234 prevents the power-taking circuit 240 from outputting current to the power-taking circuit 250, which is turned off and causes loss. When the power-off circuit 250 is turned off to supply power to the energy storage unit 231, the first unidirectional conducting element 233 prevents the second power supply terminal from outputting current to the power-on circuit 240, which causes loss.

Illustratively, the first unidirectional conducting part 233 includes a first diode D1, an anode of the first diode D1 is connected to the first power supply terminal of the conduction power-taking circuit 240, and a cathode of the first diode D1 is connected to the energy storage unit 231. Illustratively, the second unidirectional conducting element 234 includes a second diode D2, an anode of the second diode D2 is connected to the second power supply terminal of the power-off taking circuit 250, and a cathode of the second diode D2 is connected to the energy storage unit 231.

In some embodiments, with continued reference to fig. 3, the switch circuit 201 further includes a control module 260 connected to the wireless communication module 210 and the switch module 220, wherein the control module 260 is configured to control the switch module 220 to be turned on or off based on a signal output by the wireless communication module 210. Illustratively, the external terminal 400 is connected to the wireless communication module 210, the terminal 400 sends a turn-on signal to the wireless communication module 210, the wireless communication module 210 sends the turn-on signal to the control module 260, and the control module 260 controls the switch module 220 to turn on based on the turn-on signal. The terminal 400 transmits a disconnection signal to the wireless communication module 210, the wireless communication module 210 transmits the disconnection signal to the control module 260, and the control module 260 controls the switching module 220 to be disconnected based on the disconnection signal. In this way, the wireless communication module 210 and the control module 260 cooperate to control the on/off of the switch module 220.

Illustratively, the switch module 220 includes a relay.

Fig. 6 is a flow chart illustrating a control method of a switching circuit according to an exemplary embodiment of the present disclosure. Some embodiments of the present disclosure also provide a control method of a switching circuit, the switching circuit including: the wireless communication module, the switch module connected with the load connected with the zero line, the energy storage circuit, the conduction power taking circuit and the disconnection power taking circuit; the input end of the conduction power taking circuit is connected with the live wire, the conduction power taking circuit comprises a first load connecting end and a first power supply end, the first load connecting end is connected with the switch module, and the first power supply end is connected with the energy storage circuit; the energy storage circuit is connected with the wireless communication module; the input end of the disconnection electricity-taking circuit is connected with the live wire, the disconnection electricity-taking circuit comprises a second load connecting end and a second power supply end, the second load connecting end is connected between the load and the switch module, and the second power supply end is connected with the energy storage circuit. Referring to fig. 6, the control method includes:

and 61, responding to the conduction of the switch module through the conduction power-taking circuit, and outputting a first current to the energy storage circuit through a first power supply end of the conduction power-taking circuit.

When the switch module is switched on, the live wire, the first load connecting end of the conduction power taking circuit, the switch module, the load and the zero line are switched on to form a loop, the conduction power taking circuit takes power from the live wire and charges the energy storage circuit, and the energy storage circuit supplies power for the wireless communication module.

And 62, responding to the disconnection of the switch module by the disconnection electricity-taking circuit, and outputting a second current to the energy storage circuit by a second power supply end of the disconnection electricity-taking circuit, wherein the second current is smaller than the first current.

When the switch module is disconnected, the live wire, the second load connecting end of the disconnection electricity-taking circuit, the load and the zero line are conducted to form a loop, the disconnection electricity-taking circuit takes electricity from the live wire and charges the energy storage circuit, and the energy storage circuit supplies power to the wireless communication module. The third current flowing through the load is positively correlated with the second current, and the energy storage circuit supplies power to the wireless communication module instead of disconnecting the power taking circuit to directly supply power to the wireless communication module, so that the second current cannot be increased due to the increase of the power of the wireless communication module, the third current cannot be increased, and the third current cannot reach the working current of the load to enable the load to work.

Based on the above, the power-taking circuit is turned on to respond to the switch module to be turned on, and the first power supply end outputs a first current to the energy storage circuit; the power-taking circuit is disconnected in response to the switch module, and a second current is output to the energy storage circuit from the second power supply end and is smaller than the first current. Because the disconnection electricity-taking circuit is connected with the energy storage circuit instead of being directly connected with the wireless communication module, when the power of the wireless communication module is larger, the energy storage circuit directly outputs electric energy with larger power to the wireless communication module, so that the size of second current output to the energy storage circuit by the disconnection electricity-taking circuit cannot be influenced, the third current flowing through the load cannot be increased to the working current, and the load cannot work under the condition that the switch module is disconnected. And the second current is smaller than the first current, so that a third current flowing through the load is smaller, the power taking circuit is switched on to quickly charge the energy storage circuit when the switch module is switched on, and the power taking circuit is switched off to supplement the electric energy output by the energy storage circuit to the wireless communication module when the switch module is switched off.

In some embodiments, the power-off circuit includes a constant current unit, an output terminal of the constant current unit serves as a second power supply terminal, and the step 62 includes:

and the constant current unit outputs a constant current serving as a second current to the energy storage circuit in response to the switch module being turned off through the switch-off power taking circuit.

Therefore, under the condition that the switch module is disconnected, when the power of the wireless communication module is high, the energy storage circuit outputs high power to the wireless communication module, but the constant current unit of the power taking circuit is disconnected to output constant current to the energy storage circuit, the constant current cannot change, so that the third current flowing through the load cannot change, and the load cannot work.

In some embodiments, the switch circuit further includes a control module connected to the wireless communication module and the switch module, and the control method provided in some embodiments of the present disclosure further includes:

the on-off of the switch module is controlled by the control module based on the signal output by the wireless communication module.

Illustratively, the external terminal is connected with the wireless communication module, the terminal sends a conduction signal to the wireless communication module, the wireless communication module sends the conduction signal to the control module, and the control module controls the switch module to be conducted based on the conduction signal. The terminal sends a disconnection signal to the wireless communication module, the wireless communication module sends the disconnection signal to the control module, and the control module controls the switch module to be disconnected based on the disconnection signal. Therefore, the on-off of the switch module is controlled through the cooperation of the wireless communication module and the control module, the on-off of the intelligent switch can be controlled through the terminal, and whether the load works or not can be intelligently controlled.

In an exemplary embodiment, there is also provided a computer-readable storage medium having stored thereon a program which, when executed by a processor, implements any of the above-mentioned control methods of the switching circuit. The readable storage medium may be, among others, ROM, Random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.

For the method embodiments, since they substantially correspond to the apparatus embodiments, reference may be made to the apparatus embodiments for relevant portions of the description. The method embodiment and the device embodiment are complementary.

The above embodiments of the present disclosure may be complementary to each other without conflict.

The above description is only exemplary of the present disclosure and should not be taken as limiting the disclosure, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.

Claims (10)

1. A switching circuit, comprising:

a wireless communication module;

the switch module is connected with a load, and the load is connected with a zero line;

the energy storage circuit is connected with the wireless communication module;

the input end of the conduction power-taking circuit is connected with the live wire, the conduction power-taking circuit comprises a first load connecting end and a first power supply end, the first load connecting end is connected with the switch module, the first power supply end is connected with the energy storage circuit, the conduction power-taking circuit is used for responding to the conduction of the switch module, and the first power supply end outputs a first current to the energy storage circuit; and

the power-taking circuit is disconnected, the input end of the power-taking circuit is connected with the live wire, the power-taking circuit comprises a second load connecting end and a second power supply end, the second load connecting end is connected between the load and the switch module, the second power supply end is connected with the energy storage circuit, the power-taking circuit is disconnected and used for responding to the disconnection of the switch module, the second power supply end outputs second current to the energy storage circuit, and the second current is smaller than the first current.

2. The switch circuit of claim 1, wherein the power-off circuit comprises: the input end of the alternating current-direct current converter is connected with the live wire, the alternating current-direct current converter comprises a first output end and a second output end, the first output end serves as the second load connecting end, the second output end is connected with the constant current unit, the output end of the constant current unit serves as the second power supply end, and the constant current unit is used for outputting constant current serving as the second current.

3. The switch circuit of claim 2, wherein the power-off circuit further comprises: the input end of the voltage reducer is connected with the second output end of the alternating current-direct current converter, and the output end of the voltage reducer is connected with the constant current unit.

4. The switching circuit according to claim 3, wherein the constant current unit includes: the circuit comprises a first triode, a second triode and a first resistor, wherein the first triode comprises a first base electrode, a first pole and a second pole, and the second triode comprises a second base electrode, a third pole and a fourth pole;

one end of the first resistor and the first pole are connected with the output end of the voltage reducer, the other end of the first resistor is connected with the third pole, the first base is connected to the first resistor and between the third poles, the second pole is connected with the second base, and the fourth pole is connected with the energy storage circuit.

5. The switch circuit of claim 1, wherein the energy storage circuit comprises an energy storage unit, the energy storage unit comprises a super capacitor, one end of the super capacitor is connected to the wireless communication module, the first power supply terminal and the second power supply terminal, and the other end of the super capacitor is grounded.

6. The switching circuit of claim 5, wherein the tank circuit further comprises: and the filtering units are connected in parallel to two ends of the energy storage unit.

7. The switching circuit according to claim 5, wherein the energy storage unit further comprises a first unidirectional conducting member and a second unidirectional conducting member;

the first one-way conduction piece is connected between the first power supply end and the energy storage unit, and the conduction direction of the first one-way conduction piece is pointed to the energy storage unit from the first power supply end;

the second one-way conduction piece is connected between the second power supply end and the energy storage unit, and the conduction direction of the second one-way conduction piece is pointed to the energy storage unit by the second power supply end.

8. The switch circuit according to claim 1, further comprising a control module connected to the wireless communication module and the switch module, wherein the control module is configured to control the switch module to be turned on or off based on a signal output by the wireless communication module.

9. An intelligent switch, characterized in that it comprises a switching circuit according to any one of claims 1 to 8.

10. A control system, characterized in that the control system comprises:

the intelligent switch of claim 9, connected to a live wire;

the load is connected with the zero line and the intelligent switch; and

and the terminal is connected with the intelligent switch in a wireless network and is used for controlling the on-off of the intelligent switch.

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