Zero-power-consumption standby power supply control circuit and control method thereof

Abstract

The invention provides a zero-power-consumption standby power supply control circuit and a control method thereof. A power supply module supplies power to a signal detection module; after acquiring a target signal, the signal detection module sends a first type of trigger signal to the power supply module; the power supply module supplies energy to the control module after acquiring a first type of trigger signal; after the power supply module supplies energy to the control module, the control module supplies energy to the starting module; and the starting module controls the power supply switch assembly to be switched into a conducting state after acquiring the agreed instruction. And the starting module is used for performing intelligent monitoring, and outputting a corresponding control signal (which can be a high-level signal) after an agreed instruction is obtained so as to control the power supply switch assembly to be switched into a conducting state, thereby realizing intelligent awakening. And under the condition that the signal detection module does not detect the target signal, the power supply module does not supply energy to the control module, and the starting module is in a silent state, so that the standby power consumption is greatly reduced, and the aim of zero-power-consumption standby is fulfilled.

Description

Technical Field

[0001] The present invention relates to the field of power supplies, and in particular to a zero-power standby power supply control circuit and a control method thereof. Background Art

[0002] Smart appliances provide convenience for people's production and life, but also increase the huge demand for electricity. Smart appliances account for about 70% of the energy consumption in the entire electronic product field. However, most smart appliances have standby energy consumption, which is the main reason for the lack of energy consumption of smart appliances.

[0003] For a single family, the standby energy consumption of an appliance may be negligible, but if the standby energy consumption of all the appliances in the home is added together over many years, energy is lost without anyone noticing. Relevant surveys show that in a large city with a population of tens of millions, the standby energy consumption of all equipment in a year adds up to nearly 200 million kWh. The research and development and application of zero-carbon electronic products with almost zero standby power consumption is imminent and has become a global problem that urgently needs to be solved.

[0004] The International Electrotechnical Commission (IEC) 62301:2011 specifies methods for measuring electrical energy consumption in standby and related low-power modes (off mode and network mode). These methods apply to electrical products with a voltage range that is fully or partially between 100VAC and 250VAC (single-phase products) and 130VAC (AC) and 480VAC (other products). It specifies that measurements less than 5mW are classified as zero power, and products that meet this requirement can obtain a zero power label.

[0005] How to achieve zero power consumption in electrical products has become a difficult problem that technicians in this field continue to pay attention to. Summary of the invention

[0006] The object of the present invention is to provide a zero-power standby power supply control circuit and a control method thereof, so as to at least partially improve the above-mentioned problems.

[0007] In order to achieve the above purpose, the technical solution adopted by the embodiment of the present invention is as follows: In a first aspect, an embodiment of the present invention provides a zero-power standby power control circuit, the zero-power standby power control circuit comprising: a power module, a signal detection module, a control module, a start module and a power switch component; The first power output terminal of the power module is connected to the power input terminal of the signal detection module, the signal output terminal of the signal detection module is connected to the signal input terminal of the power module, the second power output terminal of the power module is connected to the power input terminal of the control module, the power output terminal of the control module is connected to the power input terminal of the start module, the start module is connected to the control terminal of the power switch component, and the power switch component is used to connect the external power supply to the rear-end electrical appliance; The power supply module is used to supply energy to the signal detection module; The signal detection module is used to send a first type of trigger signal to the power supply module after acquiring the target signal; The power supply module is used to supply energy to the control module upon obtaining the first type of trigger signal; After the power module supplies energy to the control module, the control module is used to supply energy to the start module; The startup module is used to control the power switch component to switch to the on state after obtaining the agreed instruction.

[0008] In a second aspect, an embodiment of the present invention provides a zero-power standby power control method, which is applied to the above-mentioned zero-power standby power control circuit, and the method includes: After acquiring the target signal, the signal detection module sends a first type of trigger signal to the power supply module; The power supply module supplies energy to the control module upon acquiring the first type of trigger signal; After the power module supplies energy to the control module, the control module supplies energy to the start module; After acquiring the agreed instruction, the startup module controls the power switch component to switch to the on state.

[0009] Compared with the prior art, an embodiment of the present invention provides a zero-power standby power control circuit and a control method thereof, wherein the zero-power standby power control circuit comprises: a power module, a signal detection module, a control module, a start module and a power switch assembly; a first power output end of the power module is connected to a power input end of the signal detection module, a signal output end of the signal detection module is connected to a signal input end of the power module, a second power output end of the power module is connected to a power input end of the control module, a power output end of the control module is connected to a power input end of the start module, a start module is connected to a control end of the power switch assembly, and the power switch assembly is used to connect an external power supply to a rear-end electrical appliance; the power module is used to supply energy to the signal detection module; the signal detection module is used to send a first type of trigger signal to the power module after obtaining a target signal; the power module is used to supply energy to the control module after obtaining the first type of trigger signal; after the power module supplies energy to the control module, the control module is used to supply energy to the start module; the start module is used to control the power switch assembly to switch to a conducting state after obtaining an agreed instruction. The startup module is used for intelligent monitoring. After obtaining the agreed instruction, it outputs the corresponding control signal (which can be a high-level signal) to control the power switch component to switch to the on state to achieve intelligent wake-up. If the signal detection module does not detect the target signal, the power module will not supply energy to the control module, and the startup module will be in a silent state, thereby greatly reducing the standby power consumption and achieving the purpose of zero power standby.

[0010] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 A schematic diagram of the structure of a zero-power standby power supply control circuit provided by an embodiment of the present invention.

[0013] Figure 2 A schematic diagram of the first part of a power module provided in an embodiment of the present invention.

[0014] Figure 3 A schematic diagram of the second part of the power module provided in an embodiment of the present invention.

[0015] Figure 4 This is one of the structural schematic diagrams of the control module provided in the embodiment of the present invention.

[0016] Figure 5 The second structural diagram of the control module provided in the embodiment of the present invention.

[0017] Figure 6 A schematic structural diagram of a power switch assembly provided in an embodiment of the present invention.

[0018] Figure 7 A schematic diagram of the structure of a signal detection module provided in an embodiment of the present invention.

[0019] In the figure: 10 - power module; 20 - signal detection module; 21 - detection unit; 30 - control module; 31 - switch circuit unit; 32 - load detection unit; 40 - start module; 50 - power supply switch assembly; 200 - external power supply; 300 - back-end electrical appliances. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. At the same time, in the description of the present invention, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0027] In order to achieve zero power consumption standby, the embodiment of the present invention provides a zero power consumption standby power supply control circuit, please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a zero-power standby power supply control circuit provided by an embodiment of the present invention.

[0028] The zero-power standby power control circuit includes: a power module 10 , a signal detection module 20 , a control module 30 , a start module 40 and a power switch component 50 .

[0029] The first power output terminal of the power module 10 is connected to the power input terminal of the signal detection module 20, the signal output terminal of the signal detection module 20 is connected to the signal input terminal of the power module 10, the second power output terminal of the power module 10 is connected to the power input terminal of the control module 30, the power output terminal of the control module 30 is connected to the power input terminal of the start module 40, the start module is connected to the control terminal of the power switch component 50, and the power switch component 50 is used to connect the external power supply 200 and the back-end electrical appliance 300. Among them, the back-end electrical appliance 300 can be, but is not limited to, an air conditioner, a fan, and a lighting device, etc.

[0030] The power module 10 is used to supply energy to the signal detection module 20 .

[0031] Optionally, the power module 10 continuously provides a driving voltage (VCC0 shown in the figure, which may be but is not limited to 3.3V) to the signal detection module 20 through the first power output terminal. The driving voltage may be a microampere current. Therefore, whether in standby mode or when the back-end electrical appliance 300 is in working state, the signal detection module 20 remains in working state and continuously monitors the target signal.

[0032] The signal detection module 20 is used to send a first type trigger signal to the power module 10 after acquiring the target signal.

[0033] Optionally, the signal detection module 20 may, but is not limited to, acquire the target signal by wireless detection. The target signal may be any one or more of the first type of remote control signal, the first type of detection signal, and the second type of detection signal sent by the user terminal. The first type of detection signal indicates that a target object is identified to exist in the target detection area, and the second type of detection signal indicates that a target object is identified to be moving in the target detection area. The target object may be a human or an animal.

[0034] When the signal detection module 20 obtains the target signal, it indicates that the back-end electrical appliance 300 may need to be turned on. At this time, the signal detection module 20 sends a first type of trigger signal (VOUT1 shown in the figure, which may be a high level signal) to the power module 10.

[0035] The power module 10 is used to supply energy to the control module 30 after obtaining the first type of trigger signal.

[0036] Optionally, the power module 10 continuously outputs a first operating voltage (VCC1 shown in the figure, which may be but is not limited to +5V-1) to the power input terminal of the control module 30 through the second power output terminal.

[0037] After the power module 10 supplies energy to the control module 30 , the control module 30 is used to supply energy to the starting module 40 .

[0038] After obtaining the first operating voltage, the control module 30 can supply energy to the startup module 40 to control other devices at the back end (including the startup module 40). Specifically, the control module 30 outputs a second operating voltage (VCC2 shown in the figure, which can be but is not limited to +5V-2) to the power input terminal of the startup module 40 through its power output terminal.

[0039] The startup module 40 starts working after receiving the second working voltage and can collect the agreed instructions. When the signal detection module 20 does not detect the target signal, the power module 10 will not supply energy to the control module 30, and the startup module 40 is in a silent state, thereby greatly reducing the standby power consumption and achieving the purpose of zero power standby.

[0040] The start-up module 40 is used to control the power switch component 50 to switch to the on state after obtaining the agreed instruction.

[0041] The agreed command may be, but is not limited to, any one or more of a voice command, a gesture command, a facial command, a remote control command, and a key command.

[0042] The startup module 40 is used for intelligent monitoring. After obtaining the agreed instruction, it outputs the corresponding control signal (which can be a high-level signal) to control the power switch component 50 to switch to the on state to achieve intelligent wake-up. When the signal detection module 20 does not detect the target signal, the power module 10 will not supply energy to the control module 30, the startup module 40 is in a silent state, and the overall standby power consumption of the zero-power standby power control circuit is less than 5mW, thereby greatly reducing the standby power consumption and achieving the purpose of zero-power standby.

[0043] It should be noted that in the embodiment of the present invention, dual-slave control is performed through the signal detection module 20 and the starting module 40, which realizes the intelligent opening of the electrical equipment and avoids the situation where the AC power supply of the electrical equipment is turned on just because someone passes by, which wastes energy and significantly increases power consumption.

[0044] It should be noted that, when the power switch assembly 50 is switched to the on state, the external power supply 200 starts to supply power to the back-end electrical appliance 300, and the back-end electrical appliance 300 starts to work.

[0045] The zero-power standby power control circuit provided in the embodiment of the present invention can be deployed in a smart power strip but is not limited to it, and the back-end electrical appliance 300 can be connected to the power switch assembly 50 through a plug.

[0046] Optionally, the power consumption of the signal detection module 20 is lower than that of the start-up module 40 . And / or, the operating voltage of the signal detection module 20 (ie, the driving voltage VCC0 provided by the power module 10 ) is lower than the first operating voltage (VCC1 ) provided by the power module 10 .

[0047] In the zero-power standby power control circuit provided in the embodiment of the present invention, a two-stage voltage cascade is adopted. During the switching process from the standby state to the working state, a small voltage is used to turn on a large voltage until the power switch component 50 is turned on, so that the electrical appliance is powered on and works.

[0048] In an optional implementation, the signal detection module 20 sends a first type of trigger signal after acquiring the target signal, but the first type of trigger signal does not exist all the time, and the first type of trigger signal disappears after a preset duration. In the case where the first type of trigger signal disappears, how to ensure that the back-end electrical appliance 300 works normally, the embodiment of the present invention also provides an optional implementation, please refer to the following.

[0049] The control module 30 is connected to the power switch assembly 50 , and the signal output end of the control module 30 is also connected to the signal input end of the power module 10 .

[0050] The control module 30 is also used to monitor whether the back-end electrical appliance 300 is in working state, and when the back-end electrical appliance 300 is in working state, a second type of trigger signal (VOUT2 shown in the figure) is sent to the power module 10.

[0051] Optionally, when the power switch assembly 50 is in the on state, if the back-end electrical appliance 300 is in the working state, a voltage drop is maintained between the input end and the output end of the AC working voltage of the power switch assembly 50. The control module 30 can determine that the back-end electrical appliance 300 is in the working state based on the voltage drop and send a second type of trigger signal to the power module 10.

[0052] The power module 10 is used to supply energy to the control module 30 after obtaining the second type of trigger signal.

[0053] When the control module 30 sends the second type of trigger signal to the power module 10, even if the first type of trigger signal disappears, the power module 10 will continue to supply energy to the control module 30, so that the control module 30 and the start module 40 keep working, thereby ensuring the normal operation of the back-end electrical appliance 300. When the first type of trigger signal disappears, and the control module 30 detects that the back-end electrical appliance 300 is not in the working state (no second type of trigger signal is sent), the power module 10 stops supplying energy to the control module 30, and the zero power consumption standby power control circuit returns to the zero power consumption standby state.

[0054] exist Figure 1 Based on the structure of the power module, the embodiment of the present invention also provides an optional implementation method, please refer to Figure 2 and Figure 3 , Figure 2 A schematic diagram of the first part of a power module provided in an embodiment of the present invention, Figure 3A schematic diagram of the second part of the power module provided in an embodiment of the present invention.

[0055] The power module 10 includes a first rectifier BD1, a first inductor L1, a first resistor R1 to a twentieth resistor R20, a current limiting resistor RX, a first electrolytic capacitor EC1 to a sixth electrolytic capacitor EC6, a first capacitor C1 to a twelfth capacitor C12, a first diode D1, a second diode D2, a first Zener diode ZD1, a second Zener diode ZD2, a first transistor Q1 to a fifth transistor Q5, a first control chip U1, a second control chip U2, a third control chip U3, a transformer primary B1, a transformer secondary B2 and an optocoupler component OP.

[0056] The transistors (including the first transistor to the eighth transistor) in the embodiment of the present invention may be any one of a triode, a MOS transistor and a field effect transistor. In the embodiment of the present invention, ① in the figure corresponds to the first end of the device, ② corresponds to the second end of the device, ③ corresponds to the third end of the device, and ④ corresponds to the fourth end of the device, which will not be described in detail hereinafter.

[0057] The first end and the third end of the first rectifier BD1 are connected to AC power (AC220V in the figure, it should be noted that the AC power source can be but is not limited to 220V AC power source). Optionally, a fuse and a thermistor are further provided between the first end of the first rectifier BD1 and the AC power source.

[0058] The second end of the first rectifier BD1 is respectively connected to the positive electrode of the first electrolytic capacitor EC1, one end of the first inductor L1 and one end of the first resistor R1, the other end of the first inductor L1 and the other end of the first resistor R1 are connected to the positive electrode of the second electrolytic capacitor EC2, and the fourth end of the first rectifier BD1, the negative electrode of the first electrolytic capacitor EC1 and the negative electrode of the second electrolytic capacitor EC2 are grounded.

[0059] One end of the second resistor R2, one electrode of the first capacitor C1, one end of the third resistor R3 and the first end of the transformer primary B1 are all connected to the positive electrode of the second electrolytic capacitor EC2, the other end of the second resistor R2 is connected to the third end of the second transistor Q2, the other electrode of the first capacitor C1 and the other end of the third resistor R3 are connected to one end of the fourth resistor R4, the other end of the fourth resistor R4 is connected to the negative electrode of the first diode D1, and the second end of the transformer primary B1 and the positive electrode of the first diode D1 are connected to the second end of the first transistor Q1.

[0060] One electrode of the second capacitor C2 is connected to the second end of the first transistor Q1, the other electrode of the second capacitor C2 is connected to the third end of the first transistor Q1, the first end of the first transistor Q1 is connected to one end of the sixth resistor R6, the other end of the sixth resistor R6 is connected to the first control chip U1 (the OUTPUT pin shown in the figure, also called pin 1), one end of the seventh resistor R7, one end of the eighth resistor R8 and one end of the ninth resistor R9 are all connected to the third end of the first transistor Q1, the other end of the seventh resistor R7 is connected between the first end of the first transistor Q1 and the sixth resistor R6, the other end of the eighth resistor R8 is connected to the first control chip U1 (the CS / OTS pin shown in the figure, also called pin 2), one electrode of the third capacitor C3 is connected between the eighth resistor R8 and the first control chip U1, and the other end of the ninth resistor R9 and the other end of the third capacitor C3 are grounded.

[0061] The first control chip U1 (the GND pin shown in the figure, also referred to as pin 3) is grounded.

[0062] In an optional implementation, a welding position for the third capacitor C3 may be reserved but is not actually set.

[0063] A first end of the second transistor Q2 is connected to the first control chip U1 (the EB / ASU pin shown in the figure, also called pin 4), one electrode of the seventh capacitor C7 is connected to the first control chip U1 (the VCC pin shown in the figure, also called pin 5), the second end of the second transistor Q2, one end of the fifth resistor R5 and the positive electrode of the sixth electrolytic capacitor EC6 are all connected between the seventh capacitor C7 and the first control chip U1, the negative electrode of the sixth electrolytic capacitor EC6 is grounded, the other end of the fifth resistor R5 is connected to the negative electrode of the second diode D2, the other electrode of the seventh capacitor C7, the positive electrode of the second diode D2 and one end of the eleventh resistor R11 are all connected to the third end of the primary side B1 of the transformer, and the other end of the eleventh resistor R11 is connected to the first control chip U1 (the VSENSE pin shown in the figure, also called pin 6).

[0064] One electrode of the fourth capacitor C4 and the first end of the receiver OPB in the optocoupler component OP are both connected between the first end of the second transistor Q2 and the first control chip U1, one electrode of the fifth capacitor C5 is connected between the seventh capacitor C7 and the first control chip U1, one electrode of the sixth capacitor C6 is connected between the eleventh resistor R11 and the first control chip U1, the second end of the receiver OPB in the optocoupler component OP is connected to the first end of the tenth resistor R10, and the other end of the tenth resistor R10, the other electrode of the fourth capacitor C4, the other electrode of the fifth capacitor C5, the other electrode of the sixth capacitor C6 and the fourth end of the primary side B1 of the transformer are grounded.

[0065] The first end of the secondary side B2 of the transformer is respectively connected to the positive electrode of the third electrolytic capacitor EC3, the positive electrode of the fourth electrolytic capacitor EC4, the positive electrode of the fifth electrolytic capacitor EC5, one end of the nineteenth resistor R19, one end of the twentieth resistor R20, the first end of the emitter OPA in the optocoupler component OP, and the third end of the third transistor Q3. The first pin of the third control chip U3 is connected to the positive electrode of the fifth electrolytic capacitor EC5, the second pin of the third control chip U3 is connected to the negative electrode of the fifth electrolytic capacitor EC5, the third pin of the third control chip U3 serves as the first power output terminal (VCC0) of the power module 10, one pole of the ninth capacitor C9 is connected to the third pin of the third control chip U3, and the other pole of the ninth capacitor C9 is connected to the negative electrode of the fifth electrolytic capacitor EC5.

[0066] The second end of the secondary side B2 of the transformer is respectively connected to one electrode of the eighth capacitor C8, one end of the sixteenth resistor R16 and the third end of the fourth transistor Q4, the other electrode of the eighth capacitor C8 is connected to one end of the twelfth resistor R12, the other end of the twelfth resistor R12 is connected to the negative electrode of the third electrolytic capacitor EC3, the second end of the fourth transistor Q4, the negative electrode of the third electrolytic capacitor EC3, the negative electrode of the fourth electrolytic capacitor EC4 and the negative electrode of the fifth electrolytic capacitor EC5 are connected to the reference ground, one end of the fifteenth resistor R15 is connected to the second end of the fourth transistor Q4, the other end of the fifteenth resistor R15 serves as the ground terminal (GND) of the power module 10, one electrode of the tenth capacitor C10 is connected to one end of the fifteenth resistor R15, and the other electrode of the tenth capacitor C10 is connected to the other end of the fifteenth resistor R15.

[0067] The other end of the sixteenth resistor R16 is connected to the second control chip U2 (SR-D pin shown in the figure, also called pin 1), one end of the seventeenth resistor R17 is connected to the first end of the fourth transistor Q4, the other end of the seventeenth resistor R17 is connected to the second control chip U2 (SR-G pin shown in the figure, also called pin 2), and the third end of the fourth transistor Q4 is connected to the second control chip U2 (SR-S pin shown in the figure, also called pin 3).

[0068] Optionally, the second control chip U2 may continue to send a control signal (which may be a high level signal) to the first end of the fourth transistor Q4 to switch the fourth transistor Q4 to an on state.

[0069] One electrode of the eleventh capacitor C11 is connected to the reference ground, and the other electrode of the eleventh capacitor C11 is connected to the second control chip U2 (the V-SR pin shown in the figure, also referred to as the No. 4 pin).

[0070] The third end of the fifth transistor Q5 is connected to the second control chip U2 (the STB-EN pin shown in the figure, also called pin 5), the cathode of the first voltage-limiting diode ZD1 is connected between the third end of the fifth transistor Q5 and the second control chip U2, the cathode of the second voltage-limiting diode ZD2 is connected to the second control chip U2 (the NC pin shown in the figure, also called pin 6), one end of the eighteenth resistor R18 is connected to the second control chip U2 (the TS pin shown in the figure, also called pin 7), the second end of the fifth transistor Q5, the anode of the first voltage-limiting diode ZD1, the anode of the second voltage-limiting diode ZD2 and the other end of the eighteenth resistor R18 are connected to the reference ground, the first end of the fifth transistor Q5 is connected to one end of the current-limiting resistor RX, and the other end of the current-limiting resistor RX serves as the signal input end of the power module 10 (for connecting to VOUT1 and VOUT2).

[0071] One end of the fifteenth resistor R15 is connected to the second control chip U2 (the GND pin shown in the figure, also called the No. 8 pin). The other end of the fifteenth resistor R15 is connected to the second control chip U2 (the IS pin shown in the figure, also called the No. 9 pin).

[0072] The other end of the nineteenth resistor R19 is connected to the second control chip U2 (the VIN pin shown in the figure, also called pin 10; and the OPTO pin shown in the figure, also called pin 11), the other end of the twentieth resistor R20, the second end of the transmitter OPA in the optocoupler component OP, and one electrode of the twelfth capacitor C12 are all connected to the second control chip U2 (OPTO pin), and the other electrode of the twelfth capacitor C12 is connected to the reference ground.

[0073] The second end of the third transistor Q3 serves as the second power output end of the power module 10 (for outputting VCC1), one end of the thirteenth resistor R13 is connected to the first end of the third transistor Q3, one end of the fourteenth resistor R14 is connected to the second end of the third transistor Q3, the other end of the thirteenth resistor R13 is connected to the second control chip U2 (the VBUS-G pin shown in the figure, also called pin 12), and the other end of the fourteenth resistor R14 is connected to the second control chip U2 (the VBUS pin shown in the figure, also called pin 13).

[0074] Optionally, when the signal detection module 20 outputs a first type of trigger signal (VOUT1) or the control module 30 outputs a second type of trigger signal (VOUT2), the second control chip U2 can output a high level to the thirteenth resistor R13, so that the third transistor Q3 switches to an on state, and the power supply module 10 supplies energy to the control module 30 and outputs a first operating voltage (VCC1).

[0075] Since the first type of trigger signal (VOUT1) output by the signal detection module 20 cannot be maintained for a long time, it is possible that the first type of trigger signal (VOUT1) disappears but the startup module 40 does not have enough time to receive the agreed instruction, resulting in the power switch component 50 failing to open normally. In order to improve this problem, the power module 10 can be set with a delay function. After receiving the first type of trigger signal, the power module 10 outputs the first working voltage (VCC1). After the first type of trigger signal disappears, the power module 10 continues to output the first working voltage (VCC1). After a set delay time (which can be but is not limited to 10 seconds), the first working voltage (VCC1) is stopped. Optionally, the delay function can be implemented by the second control chip U2.

[0076] In an optional embodiment, when the third transistor Q3 is turned on, the transmitter OPA in the optocoupler component OP does not emit light, and the receiver OPB in the optocoupler component OP does not receive the light signal, and the second transistor Q2 remains in the off state. When the third transistor Q3 is turned off, the transmitter OPA in the optocoupler component OP emits light, and the receiver OPB in the optocoupler component OP receives the light signal, and the second transistor Q2 switches to the on state, changing the magnetic flux density of the primary side B1 of the transformer, thereby reducing the power output of the primary side B1 of the transformer.

[0077] Optionally, the first control chip U1 may control whether the first transistor Q1 and the second transistor Q2 are turned on, thereby controlling the first operating voltage of the secondary side B2 of the transformer.

[0078] exist Figure 1 Based on the structure of the control module, the embodiment of the present invention also provides an optional implementation method, please refer to Figure 4 , Figure 4 This is one of the structural schematic diagrams of the control module provided in the embodiment of the present invention.

[0079] The control module 30 includes a switch circuit unit 31 . The switch circuit unit 31 includes a twenty-first resistor R21 , a twenty-second resistor R22 , a seventh transistor Q7 , a first relay J1 , and a first switch K1 corresponding to the first relay J1 .

[0080] One end of the twenty-first resistor R21 serves as an input end of the switch circuit unit 31 (ie, a power input end of the control module 30 ), and is connected to the second power output end of the power module 10 .

[0081] One end of the twenty-second resistor R22 is connected to the input end of the switch circuit unit 31 , and the other end of the twenty-second resistor R22 is connected to the first end (base) of the seventh transistor Q7 .

[0082] One end of the first relay J1 is connected to the other end of the twenty-first resistor R21 , the other end of the first relay J1 is connected to the second end (collector) of the seventh transistor Q7 , and the third end (emitter) of the seventh transistor Q7 is grounded.

[0083] When the power module 10 supplies energy to the control module 30 and outputs the first working voltage VCC1, the seventh transistor Q7 is turned on, and the first relay J1 controls the first switch K1 to switch from the off state to the on state, thereby supplying energy to the rear-end startup module 40 and outputting the second working voltage VCC2. When no current flows through the first relay J1, the first switch K1 remains in the off state. The first switch K1 can be, but is not limited to, a single-pole double-throw switch.

[0084] One end of the first switch K1 is connected to the input end of the switch circuit unit 31 , and the other end of the first switch K1 is connected to the power output end of the control module 30 and the power input end of the start module 40 .

[0085] In an optional implementation, the switch circuit unit 31 further includes a third diode D3, a fourth diode D4, a twenty-third resistor R23 and an LED tube.

[0086] The anode of the third diode D3 is connected to the input end of the switch circuit unit 31 , the cathode of the third diode D3 is connected to one end of the 22nd resistor R22 , and the other end of the 22nd resistor R22 is connected to the first end (base) of the seventh transistor Q7 .

[0087] An anode of the fourth diode D4 is connected between the first relay J1 and the seventh transistor Q7 , and a cathode of the fourth diode D4 is connected between the first relay J1 and the twenty-first resistor R21 .

[0088] One end of the twenty-third resistor R23 is connected to the cathode of the third diode D3 , the other end of the twenty-third resistor R23 is connected to the anode of the LED tube, and the cathode of the LED tube is grounded.

[0089] When the power module 10 outputs the first working voltage VCC1, the LED tube lights up to serve as a prompt.

[0090] The twenty-first resistor R21 and the twenty-second resistor R22 can play a role of current limiting, thereby protecting the first relay J1 and the seventh transistor Q7. The fourth diode D4 is connected in parallel with the first relay J1 to play a role of voltage stabilization protection.

[0091] exist Figure 1 Based on the structure of the control module, the embodiment of the present invention also provides an optional implementation method, please refer to Figure 5 , Figure 5The second structural diagram of the control module provided in the embodiment of the present invention.

[0092] The control module 30 includes a load detection unit 32, which includes a twenty-fourth resistor R24, a twenty-fifth resistor R25, a twenty-sixth resistor R26, a twenty-seventh resistor R27, a twenty-eighth resistor R28, a fifteenth capacitor C15, a sixteenth capacitor C16, a seventeenth capacitor C17, an eighteenth capacitor C18, a second rectifier BD2, a seventh electrolytic capacitor EC7, an eighth electrolytic capacitor EC8, a third Zener diode ZD3, a fourth Zener diode ZD4, an eighth transistor Q8 and a fifth diode D5.

[0093] One end of the twenty-fifth resistor R25 serves as the second input end of the load detection unit 32 and is connected to the second AC power supply line in the power supply switch assembly 50. The other end of the twenty-fifth resistor R25 is connected to the first end of the second rectifier BD2. One electrode of the fifteenth capacitor C15 is connected to one end of the twenty-fifth resistor R25 and the other electrode of the fifteenth capacitor C15 is connected to the other end of the twenty-fifth resistor R25.

[0094] One end of the twenty-sixth resistor R26 serves as the first input end of the load detection unit 32, and is connected to the first AC power supply line in the power supply switch assembly 50 (as shown in the figure, connected to the second switch K2 and the AC output end AC220V-CU, for connecting the back-end electrical appliance 300), and the other end of the twenty-sixth resistor R26 is connected to the third end of the second rectifier BD2.

[0095] The positive electrode of the seventh electrolytic capacitor EC7, one electrode of the sixteenth capacitor C16, the negative electrode of the third zener diode ZD3, one end of the twenty-fourth resistor R24, the second end of the eighth transistor Q8 and one electrode of the seventeenth capacitor C17 are all connected to the second end of the second rectifier BD2.

[0096] The anode of the third voltage zener diode ZD3 is connected to one end of the twenty-seventh resistor R27, the other end of the twenty-fourth resistor R24 ​​is connected to the first end of the eighth transistor Q8, the cathode of the fourth voltage zener diode ZD4 is connected between the twenty-fourth resistor R24 ​​and the eighth transistor Q8, the anode of the eighth electrolytic capacitor EC8, the other electrode of the seventeenth capacitor C17, one electrode of the eighteenth capacitor C18, one end of the twenty-eighth resistor R28 and the anode of the fifth diode D5 are all connected to the third end of the eighth transistor Q8.

[0097] The fourth end of the second rectifier BD2, the negative electrode of the seventh electrolytic capacitor EC7, the other electrode of the sixteenth capacitor C16, the other end of the twenty-seventh resistor R27, the positive electrode of the fourth voltage zener diode ZD4, the negative electrode of the eighth electrolytic capacitor EC8, the other electrode of the eighteenth capacitor C18, and the other end of the twenty-eighth resistor R28 are all grounded.

[0098] The cathode of the fifth diode D5 serves as the output end of the load detection unit 32 and is connected to the signal input end of the power module 10 .

[0099] The second rectifier BD2 is used for converting the AC working voltage into a DC voltage when the power switch component 50 is turned on, and providing the DC voltage to the first electrode of the eighth transistor Q8 to turn on the eighth transistor Q8.

[0100] In an optional implementation, the cathode of the fifth diode D5 is also connected between the third diode D3 and the twenty-second resistor R22.

[0101] When the power switch component 50 is turned on and the back-end electrical appliance 300 is in working state, there is a voltage drop between the AC input end and the AC output end of the power switch component 50. The second rectifier BD2 in the load detection unit 32 converts the voltage drop into a DC voltage and turns on the eighth transistor Q8, thereby controlling the first end of the seventh transistor Q7 to maintain a high level. The seventh transistor Q7 is always turned on, and the control module 30 continuously outputs the second working voltage VCC2.

[0102] In an optional implementation, the power consumption of the seventh transistor Q7 is greater than the power consumption of the eighth transistor Q8.

[0103] In an optional implementation, the turn-on voltage of the fifth diode D5 is higher than the turn-on voltage of the third diode D3, and the difference between the two is greater than 0.2V.

[0104] A third voltage stabilizing diode ZD3 and a fourth voltage stabilizing diode ZD4 are connected in parallel at the front end of the eighth transistor Q8. The third voltage stabilizing diode ZD3 is used to stabilize the DC voltage of about 300V to 24V, and the fourth voltage stabilizing diode ZD4 is used to stabilize the 24V to 5V. The voltage is reduced from a DC voltage of about 300V to 5V through two-stage voltage stabilization, rather than directly reducing the voltage from about 300V to 5V. In order to achieve two-stage voltage stabilization, electrolytic capacitors and capacitors C16 are also added for filtering and voltage stabilization. Experiments have shown that it is not easy to stabilize the voltage when the voltage is directly reduced from about 300V to 5V, while the two-stage voltage drop has better stability, and voltage reduction and voltage stabilization are achieved with a minimum of components.

[0105] exist Figure 1 Based on the structure of the power switch assembly, the embodiment of the present invention also provides an optional implementation method, please refer to Figure 6 , Figure 6 A schematic structural diagram of a power switch assembly provided in an embodiment of the present invention.

[0106] The power switch assembly 50 includes a twenty-ninth resistor R29, a thirtieth resistor R30, a sixth transistor Q6, a second relay J2, a first AC power supply line S1, a second AC power supply line S2, and a second switch K2 corresponding to the second relay J2. The second switch K2 is arranged in the first AC power supply line S1, and the external power supply 200 is an AC power supply.

[0107] The first end of the first AC power supply line S1 is used to connect to the first end of the AC power source (i.e., the first AC input end of the power supply switch assembly 50), the second end of the first AC power supply line S1 is used to connect to the first end of the rear-end electrical appliance 300 (i.e., the first AC output end of the power supply switch assembly 50), the first end of the second AC power supply line S2 is used to connect to the second end of the AC power source (i.e., the second AC input end of the power supply switch assembly 50), and the second end of the second AC power supply line S2 is used to connect to the second end of the rear-end electrical appliance 300 (i.e., the second AC input end of the power supply switch assembly 50).

[0108] One end of the twenty-ninth resistor R29 serves as the control end of the power switch component 50 and is connected to (the control signal output end of) the start-up module 40 ; the other end of the twenty-ninth resistor R29 is connected to the first end of the sixth transistor Q6 .

[0109] One end of the 30th resistor R30 is connected to the power output end of the control module 30, the other end of the 30th resistor R30 is connected to one end of the second relay J2, the other end of the second relay J2 is connected to the second end of the sixth transistor Q6, and the third end of the sixth transistor Q6 is grounded.

[0110] After obtaining the agreed instruction, the startup module 40 can output a control signal (which can be a high-level signal) to the twenty-ninth resistor R29, thereby controlling the sixth transistor Q6 to switch to the on state. At this time, the second working voltage VCC2 flows through the second relay J2 through the thirtieth resistor R30, and the second relay J2 controls the second switch K2 to switch to the non-conducting state, that is, the power supply switch component 50 switches to the on state. When the sixth transistor Q6 is disconnected or the control module 30 stops outputting the second working voltage VCC2, the second switch K2 returns to the off state, that is, the power supply switch component 50 switches to the off state. Among them, the second switch K2 can be, but is not limited to, a single-pole double-throw switch.

[0111] In an optional implementation, the power switch assembly 50 further includes a sixth diode D6, a cathode of the sixth diode D6 is connected between the thirtieth resistor R30 and the second relay J2, and an anode of the sixth diode D6 is connected between the second relay J2 and the sixth transistor Q6.

[0112] The twenty-ninth resistor R29 and the thirtieth resistor R30 can play a role in current limiting, and the sixth diode D6 can play a role in voltage stabilization.

[0113] The start-up module 40 in the embodiment of the present invention includes any one or more of a voice command recognition module, a gesture recognition module and a command receiving module. The command receiving module is used to receive a remote control command and / or a key command. The voice command recognition module is used to receive a voice command, and the gesture recognition module is used to receive a gesture command, a facial command and an action command.

[0114] exist Figure 6 In the example, the startup module 40 is a voice command recognition module, which includes a voice control chip U5, a microphone MIC, a speaker Y1, a fourteenth capacitor, and a third switch K3. The microphone MIC is connected to the MIC+ pin and the MIC- pin of the voice control chip U5, respectively, and the speaker Y1 is connected to the SPK+ pin and the SPK- pin of the voice control chip U5, respectively.

[0115] The power output terminal (VCC2) of the control module 30 is connected to the power supply terminal (+5V pin) of the voice control chip U5, one electrode of the fourteenth capacitor C14 is connected to the power supply terminal of the voice control chip U5, and the other electrode of the fourteenth capacitor C14 and the ground terminal (GND pin) of the voice control chip U5 are grounded. The fourteenth capacitor C14 can play a filtering role.

[0116] The control signal output terminal (the 3.3V pin shown in the figure) of the voice control chip U5 is connected to the control terminal of the power switch component 50 .

[0117] After the power output terminal of the control module 30 outputs the second working voltage VCC2, the startup module 40 (voice control chip U5) starts working. If an agreed instruction is obtained during this period, a corresponding control signal is output to the power switch component 50 to switch the power switch component 50 to the on state. In the case where the control module 30 does not output the second working voltage VCC2, the startup module 40 (voice control chip U5) will not work, and there will be no power consumption damage.

[0118] Optionally, one end of the third switch K3 is grounded, and the other end of the third switch K3 is connected to the voice control chip U5 (GND pin shown in the figure), so as to manually control whether the voice control chip U5 works by switching the state of the third switch K3.

[0119] Optionally, when the third switch K3 is closed and the power output terminal of the control module 30 outputs the second working voltage VCC2, the voice control chip U5 starts to work.

[0120] exist Figure 1 Based on the structure of the signal detection module, the embodiment of the present invention also provides an optional implementation method, please refer to Figure 7 , Figure 7 A schematic diagram of the structure of a signal detection module provided in an embodiment of the present invention.

[0121] The signal detection module 20 includes n detection units 21 , a selection switch K4 and a seventh diode D7 . The power input terminals (VCC) of the n detection units 21 are all connected to the first power output terminal ( VCC0 ) of the power module 10 .

[0122] The types of the n detection units 21 can be the same or different, and the selection switch K4 can be turned on selectively (i.e., one input end of the selection switch K4 is connected to its output end), or multiple ports can be turned on simultaneously (i.e., multiple input ends of the selection switch K4 are connected to its output end).

[0123] The output end (OUT) of the i-th detection unit 21 is connected to the i-th input end of the selection switch K4, wherein the i-th detection unit 21 is U4i shown in the figure, 1≤i≤n, and the output end of the selection switch K4 is connected to the anode of the seventh diode D7, and the cathode of the seventh diode D7 serves as the signal output end of the signal detection module 20, and is used to connect the signal input end (current limiting resistor RX) of the power module 10.

[0124] The conduction state of the selection switch K4 can be selected by the user according to the scenario, which is not limited here.

[0125] The detection unit 21 is any one of a radar detection unit, a remote control command detection unit and an infrared detection unit.

[0126] The remote control command detection unit may be, but is not limited to, a 433MHZ wireless receiving module.

[0127] The embodiment of the present invention further provides a zero-power standby power control method, which is applied to the above-mentioned zero-power standby power control circuit. The zero-power standby power control method includes: S601, S602, S603 and S604, which are specifically described as follows.

[0128] S601, after acquiring the target signal, the signal detection module sends a first type of trigger signal to the power module.

[0129] S602: After receiving the first type of trigger signal, the power module supplies energy to the control module.

[0130] S603, after the power module supplies energy to the control module, the control module supplies energy to the start-up module.

[0131] S604, after obtaining the agreed instruction, the startup module controls the power switch component to switch to the on state.

[0132] In an optional implementation, the zero-power standby power control method further includes: S605 and S606, which are described in detail as follows.

[0133] S605, the control module monitors whether the rear-end electrical appliances are in working state, and when the rear-end electrical appliances are in working state, sends a second type of trigger signal to the power module.

[0134] S606: After obtaining the second type of trigger signal, the power module supplies energy to the control module.

[0135] It should be noted that the zero-power standby power control method provided in this embodiment can perform the functions and uses shown in the above zero-power standby power control current embodiment to achieve the corresponding technical effects. For the sake of brief description, for parts not mentioned in this embodiment, please refer to the corresponding contents in the above embodiments.

[0136] In summary, an embodiment of the present invention provides a zero-power standby power control circuit and a control method thereof. The zero-power standby power control circuit includes: a power module, a signal detection module, a control module, a start module and a power switch assembly; the first power output end of the power module is connected to the power input end of the signal detection module, the signal output end of the signal detection module is connected to the signal input end of the power module, the second power output end of the power module is connected to the power input end of the control module, the power output end of the control module is connected to the power input end of the start module, the start module is connected to the control end of the power switch assembly, and the power switch assembly is used to connect an external power supply to a back-end electrical appliance; the power module is used to supply energy to the signal detection module; the signal detection module is used to send a first type of trigger signal to the power module after obtaining a target signal; the power module is used to supply energy to the control module after obtaining the first type of trigger signal; after the power module supplies energy to the control module, the control module is used to supply energy to the start module; the start module is used to control the power switch assembly to switch to a conducting state after obtaining an agreed instruction. The startup module is used for intelligent monitoring. After obtaining the agreed instruction, it outputs the corresponding control signal (which can be a high-level signal) to control the power switch component to switch to the on state to achieve intelligent wake-up. If the signal detection module does not detect the target signal, the power module will not supply energy to the control module, and the startup module will be in a silent state, thereby greatly reducing the standby power consumption and achieving the purpose of zero power standby.

[0137] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0138] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A zero-power standby power supply control circuit, characterized in that: The zero-power standby power control circuit includes: a power module, a signal detection module, a control module, a start module and a power switch component; The first power output terminal of the power module is connected to the power input terminal of the signal detection module, the signal output terminal of the signal detection module is connected to the signal input terminal of the power module, the second power output terminal of the power module is connected to the power input terminal of the control module, the power output terminal of the control module is connected to the power input terminal of the start module, the start module is connected to the control terminal of the power switch component, and the power switch component is used to connect the external power supply to the rear-end electrical appliance; The power supply module is used to supply energy to the signal detection module; The signal detection module is used to send a first type of trigger signal to the power supply module after acquiring the target signal; The power supply module is used to supply energy to the control module upon obtaining the first type of trigger signal; After the power module supplies energy to the control module, the control module is used to supply energy to the start module; The startup module is used to control the power switch component to switch to the on state after obtaining the agreed instruction.

2. The zero-power standby power control circuit according to claim 1, characterized in that: The control module is connected to the power switch assembly; The control module is also used to monitor whether the rear-end electrical appliance is in a working state, and when the rear-end electrical appliance is in a working state, send a second type of trigger signal to the power module; The power supply module is used to supply energy to the control module after obtaining the second type of trigger signal.

3. The zero-power standby power control circuit according to claim 2, characterized in that: The control module includes a switch circuit unit, and the switch circuit unit includes a twenty-first resistor, a twenty-second resistor, a seventh transistor, a first relay, and a first switch corresponding to the first relay; One end of the twenty-first resistor serves as an input end of the switch circuit unit and is connected to a second power output end of the power module; One end of the 22nd resistor is connected to the input end of the switch circuit unit, and the other end of the 22nd resistor is connected to the first end of the seventh transistor; One end of the first relay is connected to the other end of the twenty-first resistor, the other end of the first relay is connected to the second end of the seventh transistor, and the third end of the seventh transistor is grounded; One end of the first switch is connected to the input end of the switch circuit unit, and the other end of the first switch is connected to the power output end of the control module.

4. The zero-power standby power control circuit according to claim 3, characterized in that: The switch circuit unit further includes a third diode, a fourth diode, a twenty-third resistor and an LED tube; The anode of the third diode is connected to the input end of the switch circuit unit, the cathode of the third diode is connected to one end of a twenty-second resistor, and the other end of the twenty-second resistor is connected to the first end of the seventh transistor; The anode of the fourth diode is connected between the first relay and the seventh transistor, and the cathode of the fourth diode is connected between the first relay and the twenty-first resistor; One end of the twenty-third resistor is connected to the cathode of the third diode, the other end of the twenty-third resistor is connected to the anode of the LED tube, and the cathode of the LED tube is grounded.

5. The zero-power standby power control circuit according to claim 2, characterized in that: The control module includes a load detection unit, and the load detection unit includes a twenty-fourth resistor, a twenty-fifth resistor, a twenty-sixth resistor, a twenty-seventh resistor, a twenty-eighth resistor, a fifteenth capacitor, a sixteenth capacitor, a seventeenth capacitor, an eighteenth capacitor, a second rectifier, a seventh electrolytic capacitor, an eighth electrolytic capacitor, a third zener diode, a fourth zener diode, an eighth transistor, and a fifth diode; One end of the twenty-fifth resistor is connected to the second AC power supply line in the power switch assembly as the second input end of the load detection unit, the other end of the twenty-fifth resistor is connected to the first end of the second rectifier, one electrode of the fifteenth capacitor is connected to one end of the twenty-fifth resistor, and the other electrode of the fifteenth capacitor is connected to the other end of the twenty-fifth resistor; One end of the twenty-sixth resistor is used as the first input end of the load detection unit and is connected to the first AC power supply line in the power switch assembly, and the other end of the twenty-sixth resistor is connected to the third end of the second rectifier; The positive electrode of the seventh electrolytic capacitor, one electrode of the sixteenth capacitor, the negative electrode of the third voltage stabilizing diode, one end of the twenty-fourth resistor, the second end of the eighth transistor and one electrode of the seventeenth capacitor are all connected to the second end of the second rectifier; The anode of the third voltage zener diode is connected to one end of the twenty-seventh resistor, the other end of the twenty-fourth resistor is connected to the first end of the eighth transistor, the cathode of the fourth voltage zener diode is connected between the twenty-fourth resistor and the eighth transistor, the anode of the eighth electrolytic capacitor, the other electrode of the seventeenth capacitor, one electrode of the eighteenth capacitor, one end of the twenty-eighth resistor and the anode of the fifth diode are all connected to the third end of the eighth transistor, The fourth end of the second rectifier, the negative electrode of the seventh electrolytic capacitor, the other electrode of the sixteenth capacitor, the other end of the twenty-seventh resistor, the positive electrode of the fourth voltage stabilizing diode, the negative electrode of the eighth electrolytic capacitor, the other electrode of the eighteenth capacitor, and the other end of the twenty-eighth resistor are all grounded; The cathode of the fifth diode serves as the output end of the load detection unit and is connected to the signal input end of the power module.

6. The zero-power standby power control circuit according to claim 1, characterized in that: The power switch assembly includes a twenty-ninth resistor, a thirtieth resistor, a sixth transistor, a second relay, a first AC power line, a second AC power line, and a second switch corresponding to the second relay, the second switch is arranged in the first AC power line, and the external power supply is an AC power supply; The first end of the first AC power line is used to connect to the first end of the AC power source, the second end of the first AC power line is used to connect to the first end of the rear-end appliance, the first end of the second AC power line is used to connect to the second end of the AC power source, and the second end of the second AC power line is used to connect to the second end of the rear-end appliance; One end of the 29th resistor is used as the control end of the power switch component and is connected to the startup module; the other end of the 29th resistor is connected to the first end of the sixth transistor; One end of the 30th resistor is connected to the power output end of the control module, the other end of the 30th resistor is connected to one end of the second relay, the other end of the second relay is connected to the second end of the sixth transistor, and the third end of the sixth transistor is grounded.

7. The zero-power standby power control circuit according to claim 1, characterized in that: The startup module includes any one or more of a voice instruction recognition module, a gesture recognition module and an instruction receiving module.

8. The zero-power standby power control circuit according to claim 1, characterized in that: The signal detection module comprises n detection units, a selection switch and a seventh diode, and the power input ends of the n detection units are all connected to the first power output end of the power module; The output end of the i-th detection unit is connected to the i-th input end of the selection switch, wherein 1≤i≤n, the output end of the selection switch is connected to the anode of the seventh diode, and the cathode of the seventh diode serves as the signal output end of the signal detection module.

9. The zero-power standby power control circuit according to claim 8, characterized in that: The detection unit is any one of a radar detection unit, a remote control command detection unit and an infrared detection unit.

10. A zero-power standby power control method, characterized in that: The zero-power standby power control circuit applied to any one of claims 1 to 9, the method comprising: After acquiring the target signal, the signal detection module sends a first type of trigger signal to the power supply module; The power supply module supplies energy to the control module upon acquiring the first type of trigger signal; After the power module supplies energy to the control module, the control module supplies energy to the start module; After acquiring the agreed instruction, the startup module controls the power switch component to switch to the on state.

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