Standby control circuit and electric equipment

Abstract

The embodiment of the invention provides a standby control circuit and electric equipment, and belongs to the field of electrical equipment. The circuit comprises a control module, a communication bus module, a driving module and a power supply module, the first end of the control module is connected with an on-off key of electric equipment, and the second end of the control module is connected with the first end of the communication bus module; the second end of the communication bus module is connected with the first end of the driving module, the third end of the communication bus module is connected with a first working voltage, and the fourth end of the communication bus module is grounded; the second end of the driving module is connected with the power supply module; when receiving a shutdown signal of the on-off key, the control module controls the second end of the communication bus module to continuously output a preset high level, the driving module responds to the preset high level and outputs a preset low level at the second end of the driving module, and the power supply module responds to the preset low level and stops working. The problem that the power cannot be thoroughly cut off when the electric equipment is in a standby state is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of electrical equipment, and in particular relates to a standby control circuit and electrical equipment. Background Art

[0002] Standby power consumption refers to the overall power loss when the power supply is connected to the electrical equipment but not started. At present, washing machines and dryers have low standby power consumption requirements. When in standby mode, each module enters a low power consumption mode to meet the standby power consumption requirements.

[0003] In the existing circuit, a single chip microcomputer is used to control the power supply of the module to enter a low power consumption mode.

[0004] At this time, the microcontroller and LDO (Low Dropout Regulator) are still consuming power and cannot be completely powered off. Summary of the invention

[0005] The present application provides a standby control circuit and an electrical device, which are used to solve the problem that the electrical device cannot be completely powered off when in standby mode.

[0006] In the first aspect, the present invention provides a standby control circuit, which is built into an electrical device, and includes: a control module, a communication bus module, a drive module, and a power supply module. The first end of the control module is connected to the switch of the electrical device, and the second end of the control module is connected to the first end of the communication bus module; the second end of the communication bus module is connected to the first end of the drive module, the third end of the communication bus module is connected to the first working voltage, and the fourth end of the communication bus module is grounded; the second end of the drive module is connected to the power supply module. When the control module receives the shutdown signal of the switch, the second end of the control communication bus module is controlled to continuously output a preset high level, the drive module responds to the preset high level, and outputs a preset low level at the second end of the drive module, and the power supply module stops working in response to the preset low level.

[0007] In a possible implementation, the driving module includes: a transistor Q1, a resistor R1, a resistor R2, a resistor R3 and a resistor R4. The common point of the first end of the resistor R1, the first end of the resistor R2 and the emitter of the transistor Q1 is connected to the first working voltage; the second end of the resistor R3 is connected to the second end of the resistor R4; the common point of the second end of the resistor R1 and the first end of the resistor R3 is connected to the second end of the communication bus module as the first end of the driving module; the second end of the resistor R2 and the first end of the resistor R4 are connected to the base of the transistor Q1; the collector of the transistor Q1 is connected to the first end of the power supply module as the second end of the driving module.

[0008] In a possible implementation, the power supply module includes: a first switch module, a second switch module and an integrated module. The first end of the first switch module is connected to the second end of the driving module as the first end of the power supply module, the second end of the first switch module is connected to the first end of the second switch module; and the second end of the second switch module is connected to the integrated module.

[0009] In a possible implementation, the first switch module includes: a diode D, a capacitor C, a field effect transistor MOS, a resistor R5, a resistor R6 and a resistor R7. The first end of the resistor R5 is connected to the second end of the driving module as the first end of the first switch module, and the second end of the resistor R5 is connected to the positive electrode of the diode D; the common point of the positive plate of the capacitor C and the first end of the resistor R6 is connected to the negative electrode of the diode D; the common point of the second end of the resistor R6 and the first end of the resistor R7 is connected to the gate of the field effect transistor MOS; the negative plate of the capacitor C, the second end of the resistor R7 and the source of the field effect transistor MOS are grounded, and the drain of the field effect transistor MOS is connected to the first end of the second switch module as the second end of the first switch module.

[0010] In a possible implementation, the second switch module includes: a transistor Q2, a resistor R8, and a resistor R9. The second end of the resistor R8 is connected to the second end of the first switch module as the first end of the second switch module, the common point of the first end of the resistor R8 and the second end of the resistor R9 is connected to the base of the transistor Q2, the first end of the resistor R9 and the emitter of the transistor Q2 are connected to the second working voltage, and the collector of the transistor Q2 is connected to the first end of the integrated module as the second end of the second switch module.

[0011] In a possible implementation, the integrated module includes: a power supply device U. A first end of the power supply device U is connected to a second end of the second switch module as a first end of the integrated module, a second end of the power supply device U is grounded, and a third end of the power supply device U is connected to a power supply.

[0012] In a possible implementation, the standby control circuit further includes: an instruction sending module and an instruction receiving module. The instruction sending module is connected to the third end of the driving module; the instruction receiving module is connected to the second end of the driving module; the instruction sending module is used to send control instructions in the electric device; and the instruction receiving module is used to receive control instructions in the electric device.

[0013] In a possible implementation, the instruction sending module includes: a transistor Q3, a transmitting unit, a resistor R10, and a resistor R11. The collector of the transistor Q3 is connected to the third end of the driving module, wherein the third end of the driving module is the common connection point of the resistor R3 and the resistor R4; the common connection point of the emitter collector of the transistor Q3 and the first end of the resistor R10 is grounded, and the common connection point of the base of the transistor Q3 and the second end of the resistor R10 is connected to the first end of the resistor R11; and the second end of the resistor R11 is connected to the transmitting unit.

[0014] In a possible implementation, the instruction receiving module includes: a transistor Q4, a resistor R12, a resistor R13, a resistor R14 and a receiving unit. The first end of the resistor R12 is connected to the second end of the driving circuit, the second end of the resistor R12 is connected to the common point of the first end of the resistor R13 and the base of the transistor Q4; the common point of the emitter of the transistor Q4 and the second end of the resistor R13 is grounded; the collector of the transistor Q4 is connected to the common point of the first end of the resistor R14 and the receiving unit; the second end of the resistor R14 is connected to the third working voltage.

[0015] In a second aspect, the present application provides an electrical device, including: a device housing, in which the standby control circuit described in the first aspect is provided.

[0016] The standby control circuit and electrical equipment provided by the present application, when the switch key is set to the shutdown state, the control module receives the shutdown signal of the switch key, and controls the second end of the communication bus module to continuously output a preset high level, and the driving module responds to the preset high level and continuously outputs a preset low level at the second end of the driving module, so that the power supply module cuts off the circuit path, thereby achieving the effect of completely powering off the device components using the power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0018] Figure 1 A schematic diagram of the structure of the standby control circuit provided in the embodiment of the present application Figure 1 ;

[0019] Figure 2 A schematic diagram of the structure of the standby control circuit provided in the embodiment of the present application Figure 2 ;

[0020] Figure 3 A schematic diagram of the structure of the standby control circuit provided in the embodiment of the present application Figure 3 . DETAILED DESCRIPTION

[0021] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0022] It should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0023] When an electrical device is connected to a power source but not started, the device will still generate standby power consumption. In the prior art, a single-chip microcomputer is often used to control the power supply of each module, so that the electrical device enters a low-power mode. However, at this time, the single-chip microcomputer and LDO still have consumption and cannot be completely powered off.

[0024] In response to the above technical problems, the inventors proposed the following technical concept: by utilizing the presence or absence of a communication bus signal to control the power supply, when there is a signal on the communication bus, the power supply works normally, and when there is no signal on the communication bus, the power supply is cut off to achieve the effect of completely cutting off power.

[0025] Figure 1 A schematic diagram of the structure of the standby control circuit provided in the embodiment of the present application Figure 1 .like Figure 1 As shown, the standby control circuit provided in the embodiment of the present application includes: a control module 101, a communication bus module 102, a drive module 103 and a power supply module 104.

[0026] The standby control circuit provided by the present application is built into the electrical equipment. The first end of the control module 101 is used to connect the switch key 105 of the electrical equipment, and the second end of the control module 101 is connected to the first end of the communication bus module 102. The second end of the communication bus module 102 is connected to the first end of the driving module 103, the third end of the communication bus module 102 is connected to the first working voltage, and the fourth end of the communication bus module 102 is grounded. The second end of the driving module 103 is connected to the power supply module 104.

[0027] In this embodiment, the first operating voltage may be 12V.

[0028] In some embodiments, when the switch key is set to the shutdown state, the control module receives the shutdown signal of the switch key and controls the second end of the communication bus module to continuously output a preset high level. The driving module responds to the preset high level and continuously outputs a preset low level at the second end of the driving module. At this time, the power supply module continuously responds to the preset low level and cuts off the circuit path of the power supply module, so that the power supply module stops working.

[0029] In other embodiments, when the switch is set to the power-on state, the control module enters the normal working state, and the control module sends an execution instruction to the driving module. At this time, there will be changes in high and low levels on the communication bus. The driving module receives the changed preset level and outputs the changed level at the second end of the driving module. When the second end of the driving module outputs the preset high level, the circuit of the power supply module is turned on, and the power supply works normally, so that the device components powered by the power supply work normally.

[0030] It can be seen from the above embodiments that when the switch key is set to the shutdown state, the control module receives the shutdown signal of the switch key and controls the second end of the communication bus module to continuously output a preset high level, and the driving module responds to the preset high level and continuously outputs a preset low level at the second end of the driving module, so that the power supply module cuts off the circuit path, thereby achieving the effect of completely powering off the device components using the power supply.

[0031] Figure 2 A schematic diagram of the structure of the standby control circuit provided in the embodiment of the present application Figure 2 .like Figure 2 As shown, the standby control circuit also includes: an instruction sending module and an instruction receiving module.

[0032] The instruction sending module 106 is connected to the third terminal of the driving module, and the instruction receiving module 107 is connected to the second terminal of the driving module.

[0033] In this embodiment, the instruction sending module is used to send control instructions to the electrical equipment.

[0034] In this embodiment, the instruction receiving module is used to receive control instructions from the electrical device.

[0035] Continue to refer Figure 2 The power supply module 104 includes: a first switch module 1041 , a second switch module 1042 and an integration module 1043 .

[0036] The first end of the first switch module as the first end of the power supply module is connected to the second end of the drive module, the second end of the first switch module is connected to the first end of the second switch module, and the second end of the second switch module is connected to the integrated module.

[0037] In some embodiments, when the switch key is set to the power-on state, the control module enters a normal working state, and the instruction sending module sends a control instruction in the electrical device. At this time, there will be changes in the high and low levels on the communication bus. The driving module receives the changed preset level and outputs the changed level at the second end of the driving module. When the second end of the driving module outputs a preset high level, the instruction receiving module is turned on, so that the receiving module receives the control instruction of the electrical device, and at this time the first switch module is turned on. When the voltage of the first switch module reaches the condition for the second switch module to be turned on, the second switch module is turned on, thereby enabling the integrated module to be powered.

[0038] It can be seen from the above embodiments that by connecting the instruction sending module at the third end of the driving module and the instruction receiving module at the third end of the driving module, it is possible to control the power supply by utilizing the communication preference so that the electrical equipment is powered during communication and is powered off when there is no communication.

[0039] Figure 3 A schematic diagram of the structure of the standby control circuit provided in the embodiment of the present application Figure 3 .like Figure 3 As shown, the driving module 103 includes: transistor Q1, resistor R1, resistor R2, resistor R3 and resistor R4. The first switch module 1041 includes: diode D, capacitor C, field effect transistor MOS, resistor R5, resistor R6 and resistor R7. The second switch module 1042 includes: transistor Q2, resistor R8 and resistor R9. The integrated module 1043 includes: power supply device U.

[0040] Among them, the common connection point of the first end of the resistor R1, the first end of the resistor R2 and the emitter of the transistor Q1 is connected to the first working voltage; the second end of the resistor R3 is connected to the second end of the resistor R4; the common connection point of the second end of the resistor R1 and the first end of the resistor R3 is connected to the second end of the communication bus module as the first end of the driving module; the second end of the resistor R2 and the first end of the resistor R4 are connected to the base of the transistor Q1; the collector of the transistor Q1 is connected to the first end of the power supply module as the second end of the driving module.

[0041] Among them, the first end of the resistor R5 is connected to the second end of the driving module as the first end of the first switch module, and the second end of the resistor R5 is connected to the positive electrode of the diode D; the common point of the positive plate of the capacitor C and the first end of the resistor R6 is connected to the negative electrode of the diode D; the common point of the second end of the resistor R6 and the first end of the resistor R7 is connected to the gate of the field effect transistor MOS; the negative plate of the capacitor C, the second end of the resistor R7 and the source of the field effect transistor MOS are grounded, and the drain of the field effect transistor MOS is connected to the first end of the second switch module as the second end of the first switch module.

[0042] Among them, the second end of the resistor R8 is connected to the second end of the first switch module as the first end of the second switch module, the common point of the first end of the resistor R8 and the second end of the resistor R9 is connected to the base of the transistor Q2, the first end of the resistor R9 and the emitter of the transistor Q2 are connected to the second working voltage, and the collector of the transistor Q2 is connected as the second end of the second switch module to the first end of the integrated module.

[0043] The first end of the power supply device U as the first end of the integrated module is connected to the second end of the second switch module, the second end of the power supply device U is grounded, and the third end of the power supply device U is connected to the power supply.

[0044] Continue to refer Figure 3 The communication bus module 102 includes a bus circuit, a connector CN1 and a plug-in CN2.

[0045] Among them, the first end of the bus circuit serves as the first end of the communication bus module and is connected to the second end of the control module, the second end of the bus circuit is connected to the first end of the connector CN1, the second end of the connector CN1 is connected to the first end of the plug-in CN2, and the second end of the plug-in CN2 serves as the second end of the communication bus module and is connected to the first end of the driving module.

[0046] In this embodiment, the transistor Q1 is a PNP transistor. The transistor Q2 is a PNP transistor.

[0047] In this embodiment, the connector CN1 and the plug-in CN2 are used between blocked or isolated circuits in a circuit to connect two active devices, transmit current or signals, and enable current to flow, thereby supporting the circuit to achieve a predetermined function.

[0048] In this embodiment, the control module may be a single chip microcomputer.

[0049] The working process of the standby control circuit provided in the above embodiment is as follows:

[0050] When the switch key is set to the shutdown state, the single-chip microcomputer receives the shutdown signal of the switch key, and controls the second end of the bus circuit to continuously output a preset high level. When the preset high level is transmitted to the base of the transistor Q1, since the potential difference between the base and the emitter of the transistor Q1 is less than the threshold voltage for the transistor Q1 to be turned on, the transistor Q1 is not turned on, so that the potential of the collector of the transistor Q1 is a preset low level. At this time, the first switch module does not meet the conditions for charging the capacitor C, that is, the first switch circuit is turned off, and the power supply module stops working.

[0051] When the switch key is set to the power-on state, the single-chip microcomputer receives the power-on signal of the switch key and enters the normal working state. The second end of the single-chip microcomputer control bus circuit outputs the changing high and low levels. When the base of the transistor Q1 receives the preset low level, a potential difference is formed between the base and the emitter of the transistor Q1. When U e1 >U b1 ,U b1 >U c1 When , transistor Q1 is turned on, forming a current from emitter to collector. In the formula, U e1 is the emitter voltage of transistor Q1, U b1 is the base voltage of transistor Q1, U c1 is the collector voltage of transistor Q1. At this time, the collector of transistor Q1 outputs a preset high level. In the first switch module, the current flows from the positive electrode of diode D to the negative electrode of diode D and charges capacitor C. When the potential difference between the positive plate and the negative plate of capacitor C is greater than the threshold voltage of the MOS field effect tube, the MOS field effect tube is turned on, and the current is output from the second working voltage, flowing through resistor R9, resistor R8 and MOS field effect tube to form a loop. At this time, a potential difference is formed between the base and emitter of transistor Q2. When U e2 >U b2 ,U b2 >U c2 When , transistor Q2 is turned on, forming a current from the emitter to the collector. In the formula, U e2 is the emitter voltage of transistor Q2, U b2 is the base voltage of transistor Q2, U c2 is the collector voltage of transistor Q2. At this time, the collector of transistor Q2 outputs a preset high level, and the power supply device inputs a preset high level. At this time, all equipment components powered by the power supply enter a normal working state.

[0052] When a short communication interruption occurs, the capacitor C in the first switch module starts to discharge, and the condition for the MOS tube in the second switch module to be turned on is immediately met, and the transistor Q2 works normally, so that the power supply will not be powered off within 1 second.

[0053] It can be seen from the above embodiments that by connecting the power supply module to the second end of the driving module to set a switch for the power supply, the effect of controlling the power supply by using the communication signal can be achieved, and when the communication is interrupted for a short time, the capacitor C is used to ensure the conduction of the field effect transistor MOS within 1s, thereby ensuring the normal operation of the power supply for a short time.

[0054] Continue to refer Figure 3 The instruction sending module 106 includes: a transistor Q3, a transmitting unit, a resistor R10 and a resistor R11. The instruction receiving module 107 includes: a transistor Q4, a resistor R12, a resistor R13, a resistor R14 and a receiving unit.

[0055] Among them, the collector of the transistor Q3 is connected to the third end of the driving module, wherein the third end of the driving module is the common connection point of the resistor R3 and the resistor R4; the common connection point of the emitter collector of the transistor Q3 and the first end of the resistor R10 is grounded, and the common connection point of the base of the transistor Q3 and the second end of the resistor R10 is connected to the first end of the resistor R11; the second end of the resistor R11 is connected to the transmitting unit.

[0056] Among them, the first end of the resistor R12 is connected to the second end of the driving circuit, the second end of the resistor R12 is connected to the common connection point of the first end of the resistor R13 and the base of the transistor Q4; the common connection point of the emitter collector of the transistor Q4 and the second end of the resistor R13 is grounded; the collector of the transistor Q4 is connected to the common connection point of the first end of the resistor R14 and the receiving unit; the second end of the resistor R14 is connected to the third working voltage.

[0057] In this embodiment, the transistor Q3 and the transistor Q4 are NPN transistors.

[0058] The working process of the standby control circuit provided in the above embodiment is as follows:

[0059] The command sending module receives the level of the transmitting unit. If the level is a preset high level, when U e3 b3 ,U b3 c3 When , transistor Q3 is turned on, forming a current from collector to emitter. In the formula, U e3 is the emitter voltage of transistor Q3, U b3 is the base voltage of transistor Q3, U c3 is the collector voltage of transistor Q3. At this time, the preset high level signal is transmitted on the communication bus, transistor Q1 is not conducting, the base of transistor Q4 is a preset low level, transistor Q4 is not conducting, and the level received by the receiving unit is a preset high level.

[0060] The instruction sending module receives the level of the transmitting unit. If the level is a preset low level, the transistor Q1 is turned on. At this time, the base of the transistor Q4 is a preset high level. When U e4 b4 ,U b4 c4 When , transistor Q4 is turned on, forming a current from the collector to the emitter. In the formula, U e4 is the emitter voltage of transistor Q4, U b4 is the base voltage of transistor Q4, U c4 The current is output from the third working voltage, flows through the resistor R14 and the collector and emitter of the transistor Q4, and forms a loop. At this time, the level received by the receiving unit is a preset low level.​​​​

[0061] It can be seen from the above embodiments that by connecting the instruction sending module to the third end of the driving module and the instruction receiving module to the third end of the driving module, it is possible to control the power supply by utilizing the communication preference so that the electrical equipment is powered during communication and is powered off when there is no communication.

[0062] The present application also provides an electrical device, which includes a device housing, in which a technical solution for implementing the standby control circuit in any of the above embodiments is provided. Its implementation principle and beneficial effects are similar to those of the standby control circuit and beneficial effects. Please refer to the implementation principle and beneficial effects of the standby control circuit, which will not be repeated here.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A standby control circuit, built into an electrical device, characterized in that: include: Control module, communication bus module, drive module and power supply module; The first end of the control module is connected to the switch of the electrical equipment, the second end of the control module is connected to the first end of the communication bus module; the second end of the communication bus module is connected to the first end of the driving module, the third end of the communication bus module is connected to the first working voltage, and the fourth end of the communication bus module is grounded; the second end of the driving module is connected to the power supply module; When the control module receives the shutdown signal from the switch key, it controls the second end of the communication bus module to continuously output a preset high level, the driving module responds to the preset high level, outputs a preset low level at the second end of the driving module, and the power supply module stops working in response to the preset low level.

2. The circuit according to claim 1, characterized in that The driving module comprises: Transistor Q1, resistor R1, resistor R2, resistor R3 and resistor R4; The common point of the first end of the resistor R1, the first end of the resistor R2 and the emitter of the transistor Q1 is connected to the first working voltage; the second end of the resistor R3 is connected to the second end of the resistor R4; the common point of the second end of the resistor R1 and the first end of the resistor R3 is connected to the second end of the communication bus module as the first end of the driving module; the second end of the resistor R2 and the first end of the resistor R4 are connected to the base of the transistor Q1; the collector of the transistor Q1 is connected to the first end of the power supply module as the second end of the driving module.

3. The circuit according to claim 1 or 2, characterized in that The power supply module comprises: A first switch module, a second switch module and an integrated module; The first end of the first switch module is connected to the second end of the driving module as the first end of the power supply module, the second end of the first switch module is connected to the first end of the second switch module; the second end of the second switch module is connected to the integrated module.

4. The circuit according to claim 3, characterized in that The first switch module comprises: Diode D, capacitor C, field effect transistor MOS, resistor R5, resistor R6 and resistor R7; The first end of the resistor R5 is connected to the second end of the driving module as the first end of the first switch module, and the second end of the resistor R5 is connected to the positive electrode of the diode D; the common point of the positive plate of the capacitor C and the first end of the resistor R6 is connected to the negative electrode of the diode D; the common point of the second end of the resistor R6 and the first end of the resistor R7 is connected to the gate of the field effect transistor MOS; the negative plate of the capacitor C, the second end of the resistor R7 and the source of the field effect transistor MOS are grounded, and the drain of the field effect transistor MOS is connected to the first end of the second switch module as the second end of the first switch module.

5. The circuit according to claim 3, characterized in that The second switch module comprises: Transistor Q2, resistor R8 and resistor R9; The second end of the resistor R8 is connected to the second end of the first switch module as the first end of the second switch module, the common point of the first end of the resistor R8 and the second end of the resistor R9 is connected to the base of the transistor Q2, the first end of the resistor R9 and the emitter of the transistor Q2 are connected to the second working voltage, and the collector of the transistor Q2 is connected to the first end of the integrated module as the second end of the second switch module.

6. The circuit according to claim 3, characterized in that The integrated module comprises: Power supply device U; The first end of the power supply device U is connected to the second end of the second switch module as the first end of the integrated module, the second end of the power supply device U is grounded, and the third end of the power supply device U is connected to a power supply.

7. The circuit according to claim 1, characterized in that The circuit also includes: an instruction sending module and an instruction receiving module; The instruction sending module is connected to the third end of the driving module; the instruction receiving module is connected to the second end of the driving module; The instruction sending module is used to send control instructions to the electrical equipment; The instruction receiving module is used to receive control instructions from the electrical equipment.

8. The circuit according to claim 7, characterized in that The instruction sending module comprises: Transistor Q3, transmitting unit, resistor R10 and resistor R11; The collector of the transistor Q3 is connected to the third end of the driving module, wherein the third end of the driving module is the common point of the resistor R3 and the resistor R4; the common point of the emitter collector of the transistor Q3 and the first end of the resistor R10 is grounded, and the common point of the base of the transistor Q3 and the second end of the resistor R10 is connected to the first end of the resistor R11; the second end of the resistor R11 is connected to the transmitting unit.

9. The circuit according to claim 7, characterized in that The instruction receiving module comprises: Transistor Q4, resistor R12, resistor R13, resistor R14 and receiving unit; The first end of the resistor R12 is connected to the second end of the driving circuit, and the second end of the resistor R12 is connected to the common connection point of the first end of the resistor R13 and the base of the transistor Q4; the common connection point of the emitter of the transistor Q4 and the second end of the resistor R13 is grounded; the collector of the transistor Q4 and the common connection point of the first end of the resistor R14 are connected to the receiving unit; the second end of the resistor R14 is connected to the third working voltage.

10. An electrical device, characterized in that: The device comprises a device housing in which the standby control circuit according to any one of claims 1 to 9 is arranged.

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