Intelligent power failure protection and voltage stabilization system and control method thereof

Abstract

The invention discloses an intelligent power failure protection and voltage stabilization system and a control method thereof, and belongs to the technical field of electronic circuits. The intelligent power failure protection and voltage stabilization system comprises an automatic detection module used for detecting an input voltage and outputting a detection signal; the logic control module is used for controlling the working states of the super capacitor module and the voltage boosting and stabilizing module according to the detection signal; the super capacitor module is used as a standby power supply and outputs standby discharge voltage under the condition that the working state is turned on; and the voltage boosting and stabilizing module is used for carrying out voltage boosting and stabilizing adjustment processing on the standby discharge voltage under the condition that the working state is turned on. According to the technical scheme, the input voltage can be monitored in real time, power-down protection is provided in time when abnormity is monitored, the output voltage of the power-down protection is boosted and stabilized, stable voltage output is provided for an external circuit, and therefore the safety of the electronic equipment and data stored in the electronic equipment is guaranteed.

Description

Technical Field

[0001] The present application belongs to the field of electronic circuit technology, and specifically relates to an intelligent power-off protection and voltage stabilization system and a control method thereof. Background Art

[0002] With the rapid development of electronic technology, various electronic devices have increasingly higher requirements for the stability and reliability of power supply. Especially in complex working environments, such as power fluctuations or instantaneous power outages, it is particularly important to maintain the stable operation of electronic devices and data security.

[0003] Currently, independent voltage regulators are mainly used to maintain voltage stability and battery backup is used to achieve power failure protection. However, traditional voltage regulators cannot quickly adapt to complex power environment changes, and battery backup systems often require a large amount of space to be reserved when designing electronic devices, which greatly increases the complexity of electronic devices and thus increases the production and maintenance costs of electronic devices.

[0004] Therefore, how to achieve comprehensive monitoring, intelligent response and efficient management of the power environment on the basis of simplified circuit design to provide protection for the safe and stable operation of electronic equipment and data security has become an urgent problem that people in this field need to solve. Summary of the invention

[0005] The embodiment of the present application provides an intelligent power-off protection and voltage stabilization system and a control method thereof, which can realize real-time monitoring of the input voltage, and provide power-off protection in time when an abnormality is detected, and boost and stabilize the output voltage of the power-off protection to provide a stable voltage output for the external circuit, thereby ensuring the security of the electronic device and its stored data.

[0006] In a first aspect, an embodiment of the present application provides an intelligent power-off protection and voltage stabilization system, the intelligent power-off protection and voltage stabilization system comprising:

[0007] Automatic detection module, used to detect input voltage and output detection signal;

[0008] A logic control module, connected to the automatic detection module, for controlling the working states of the supercapacitor module and the boost and voltage stabilization module according to the detection signal;

[0009] A supercapacitor module, connected to the logic control module, used to serve as a backup power supply and output a backup discharge voltage when the working state is turned on;

[0010] A boost and voltage stabilization module is connected to the logic control module and the supercapacitor module, and is used for performing boost and voltage stabilization regulation processing on the standby discharge voltage when the working state is turned on.

[0011] In a second aspect, an embodiment of the present application provides a control method for an intelligent power-off protection and voltage stabilization system, the method being executed by the intelligent power-off protection and voltage stabilization system; the method comprising:

[0012] The input voltage is detected by the automatic detection module, and a detection signal is output;

[0013] Controlling the working states of the supercapacitor module and the boost and voltage stabilization module according to the detection signal through the logic control module;

[0014] When the supercapacitor module is in the on state, it serves as a backup power supply and outputs a backup discharge voltage;

[0015] When the working state of the boost and voltage stabilization module is turned on, the standby discharge voltage is boosted and regulated.

[0016] In a third aspect, an embodiment of the present application provides an electronic device, which includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the method described in the second aspect.

[0017] In a fourth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the method described in the second aspect are implemented.

[0018] In a fifth aspect, an embodiment of the present application provides a chip, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the second aspect.

[0019] In the embodiment of the present application, the automatic detection module is used to detect the input voltage and output a detection signal; the logic control module is connected to the automatic detection module and is used to control the working state of the supercapacitor module and the boost and voltage stabilization module according to the detection signal; the supercapacitor module is connected to the logic control module and is used as a backup power supply and outputs a backup discharge voltage when the working state is turned on; the boost and voltage stabilization module is connected to the logic control module and the supercapacitor module and is used to perform boost and voltage stabilization on the backup discharge voltage when the working state is turned on. This technical solution can realize real-time monitoring of the input voltage, and provide power-off protection in time when an abnormality is detected, and perform boost and voltage stabilization on the output voltage of the power-off protection to provide a stable voltage output for the external circuit, thereby ensuring the safety of the electronic device and its stored data. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the intelligent power-off protection and voltage stabilization system provided in Example 1 of the present application;

[0021] Figure 2 It is a structural schematic diagram of a boost and voltage stabilization module provided in Embodiment 2 of the present application;

[0022] Figure 3 This is a structural example diagram of a boost and voltage stabilization module provided in Embodiment 2 of the present application;

[0023] Figure 4 It is a structural schematic diagram of a boost and voltage stabilization module provided in Embodiment 3 of the present application;

[0024] Figure 5 This is a structural example diagram of a boost and voltage stabilization module provided in Embodiment 3 of the present application;

[0025] Figure 6 It is a structural schematic diagram of a boost and voltage stabilization module provided in Embodiment 4 of the present application;

[0026] Figure 7 It is a structural schematic diagram of a boost and voltage stabilization module provided in Embodiment 4 of the present application;

[0027] Figure 8 This is a structural example diagram of a boost and voltage stabilization module provided in Embodiment 4 of the present application;

[0028] Fig. 9 It is a structural schematic diagram of a boost and voltage stabilization module provided in Embodiment 5 of the present application;

[0029] Fig.10 This is a structural example diagram of a boost and voltage stabilization module provided in Embodiment 5 of the present application;

[0030] Fig.11 This is a structural example diagram of the intelligent power-off protection and voltage stabilization system provided in Embodiment 5 of the present application;

[0031] Fig.12 A flowchart of a control method for an intelligent power-off protection and voltage stabilization system provided in Embodiment 6 of the present application;

[0032] Fig.13 It is a structural diagram of an electronic device provided in Example 7 of the present application. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the present application clearer, the specific embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. It is understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for the convenience of description, only the part related to the present application but not all the contents are shown in the accompanying drawings. Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow chart describes each operation (or step) as a sequential process, many of the operations therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of each operation can be rearranged. The process can be terminated when its operation is completed, but it can also have additional steps not included in the accompanying drawings. The process can correspond to a method, a function, a procedure, a subroutine, a subprogram, etc.

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0035] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0036] The intelligent power-off protection and voltage stabilization system and control method thereof provided in the embodiment of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and their application scenarios.

[0037] Embodiment 1

[0038] Figure 1 Schematic diagram of the structure of the intelligent power-off protection and voltage stabilization system provided in the first embodiment of the present application. Figure 1 As shown, the intelligent power-off protection and voltage stabilization system includes:

[0039] The automatic detection module 110 is used to detect the input voltage and output a detection signal;

[0040] A logic control module 120, connected to the automatic detection module, for controlling the working states of the supercapacitor module and the boost and voltage stabilization module according to the detection signal;

[0041] A supercapacitor module 130, connected to the logic control module, for serving as a backup power supply and outputting a backup discharge voltage when the working state is turned on;

[0042] The boost and voltage stabilization module 140 is connected to the logic control module and the super capacitor module, and is used for performing boost and voltage stabilization processing on the standby discharge voltage when the working state is turned on.

[0043] The present application is applicable to the scenario of providing power supply voltage for electronic devices. Based on the above usage scenarios, it can be understood that the execution subject of the present application can be the intelligent power-off protection and voltage stabilization system itself. Specifically, the detection of input voltage and the output and boost voltage regulation of standby discharge voltage can be performed by the intelligent power-off protection and voltage stabilization system. The intelligent power-off protection and voltage stabilization system can provide power supply to electronic devices when there is an abnormality in the power supply voltage to maintain the stable operation of the electronic devices.

[0044] The automatic detection module 110 is used to detect the input voltage and output a detection signal.

[0045] The input voltage may refer to the voltage inputted by the external circuit to the intelligent power-off protection and voltage stabilization system, which is equal to the power supply voltage of the electronic device. The detection signal may be a signal that can be received and analyzed by the logic control module, indicating whether the input voltage is abnormal. Among them, the input voltage abnormality refers to the situation where the input voltage causes the electronic device to not work properly or completely lose power.

[0046] The detection signal may include a high level signal and a low level signal. The detection signal may be output by comparing the input voltage with the reference voltage, and outputting a high level signal when the input voltage is greater than or equal to the reference voltage, and outputting a low level signal when the input voltage is less than the reference voltage. It is understandable that when the output detection signal is a low level signal, it indicates that the input voltage is abnormal.

[0047] The logic control module 120 is connected to the automatic detection module and is used to control the working states of the super capacitor module and the boost and voltage stabilization module according to the detection signal.

[0048] The working state of the supercapacitor module may refer to whether the supercapacitor module outputs a standby discharge voltage as a standby power supply. When the working state of the supercapacitor module is turned on, the supercapacitor module outputs a standby discharge voltage as a standby power supply; when the working state of the supercapacitor module is turned off, the supercapacitor module can perform a charging process.

[0049] The working state of the boost and voltage stabilization module may refer to whether the boost and voltage stabilization module performs boost and voltage stabilization processing on the standby discharge voltage. When the working state of the boost and voltage stabilization module is turned on, the boost and voltage stabilization module performs boost and voltage stabilization processing on the standby discharge voltage; when the working state of the boost and voltage stabilization module is turned off, the boost and voltage stabilization module does not perform boost and voltage stabilization processing on the standby discharge voltage.

[0050] It can be understood that the working state of the super capacitor module is consistent with that of the boost and voltage regulator module. When the working state of the super capacitor module is on, the working state of the boost and voltage regulator module is also on; when the working state of the super capacitor module is off, the working state of the boost and voltage regulator module is also off.

[0051] The working status of the supercapacitor module and the boost voltage regulator module can be represented by the connection status of the supercapacitor module, the boost voltage regulator module and the external circuit. When the supercapacitor module, the boost voltage regulator module and the external circuit are connected, it means that the working status of the supercapacitor module and the boost voltage regulator module is on.

[0052] The super capacitor module 130 is connected to the logic control module, and is used to serve as a backup power supply and output a backup discharge voltage when the working state is turned on.

[0053] The backup power supply can continue to provide power to the electronic device when the input voltage is abnormal. The backup discharge voltage can refer to the voltage when the supercapacitor module is used as a backup power supply to provide power to the electronic device, that is, when the supercapacitor module outputs its stored electrical energy to the external circuit.

[0054] Outputting the standby discharge voltage is the process in which the supercapacitor module outputs the stored electrical energy to the external circuit. The supercapacitor module first outputs the standby discharge voltage to the boost and voltage regulator module, which then performs boost and voltage regulation before outputting it to the external circuit.

[0055] The boost and voltage stabilization module 140 is connected to the logic control module and the super capacitor module, and is used for performing boost and voltage stabilization processing on the standby discharge voltage when the working state is turned on.

[0056] Performing a step-up and voltage regulation process on the standby discharge voltage may refer to regulating the standby discharge voltage to be output in a state of high precision and high stability.

[0057] The boost and voltage stabilization module performs boost and voltage stabilization processing on the standby discharge voltage to obtain an output voltage, and outputs the output voltage to an external circuit.

[0058] In the present application example, the automatic detection module is used to detect the input voltage and output a detection signal; the logic control module is connected to the automatic detection module and is used to control the working state of the supercapacitor module and the boost and voltage stabilization module according to the detection signal; the supercapacitor module is connected to the logic control module and is used as a backup power supply and outputs a backup discharge voltage when the working state is turned on; the boost and voltage stabilization module is connected to the logic control module and the supercapacitor module and is used to perform boost and voltage stabilization on the backup discharge voltage when the working state is turned on. The intelligent power-off protection and voltage stabilization system can realize real-time monitoring of the input voltage, and provide power-off protection in time when an abnormality is detected, and perform boost and voltage stabilization on the output voltage of the power-off protection to provide a stable voltage output for the external circuit, thereby ensuring the safety of the electronic device and its stored data.

[0059] Embodiment 2

[0060] Figure 2 It is a structural diagram of the automatic detection module provided in the second embodiment of the present application. This scheme has made better improvements on the basis of the above embodiments, and the specific improvements are as follows: the automatic detection module includes: a comparator, which is used to respectively connect the input voltage and the reference voltage at the input end, and output a detection signal according to the comparison result; wherein the detection signal includes a high-level signal and a low-level signal; a feedback resistor, which is connected to the output end of the comparator and is used to feed back the detection signal to the input end of the comparator; a pull-up resistor, which is connected to the output end of the comparator and receives the reference voltage, and is used to keep the detection signal as a high-level signal when there is no input voltage at the input end of the comparator.

[0061] like Figure 2 As shown, the automatic detection module includes:

[0062] A comparator, used to respectively connect an input voltage and a reference voltage at an input end, and output a detection signal according to a comparison result; wherein the detection signal includes a high level signal and a low level signal;

[0063] A feedback resistor connected to the output terminal of the comparator and used to feed back the detection signal to the input terminal of the comparator;

[0064] The pull-up resistor is connected to the output terminal of the comparator and receives a reference voltage, and is used to keep the detection signal as a high level signal when there is no input voltage at the input terminal of the comparator.

[0065] The reference voltage is a stable, known voltage. The reference voltage connected to the input of the comparator is used as a criterion for determining whether the input voltage is abnormal; specifically, when the input voltage is less than the reference voltage, the input voltage at this time causes the electronic device to not work properly or completely lose power.

[0066] High-level signals and low-level signals are two different signal voltage levels used to represent logical states in digital circuits. High-level signals generally represent a logical "1" or "true" state, that is, in this solution, it indicates that there is no abnormality in the input voltage, and the voltage range of high-level signals is generally close to the power supply voltage, that is, the input voltage; low-level signals generally represent a logical "0" or "false" state, that is, in this solution, it indicates that there is an abnormality in the input voltage, and the voltage range of low-level signals is generally close to 0V (volts).

[0067] A comparator is an electronic component that is specifically used to compare two voltage signals and generate a corresponding output signal. The input voltage is connected to the non-inverting terminal of the comparator's input terminal, and the reference voltage is connected to the inverting terminal of the comparator's input terminal. The comparator compares the input voltage with the reference voltage. If the input voltage is greater than or equal to the reference voltage, it outputs a high-level signal, and if the input voltage is less than the reference voltage, it outputs a low-level signal.

[0068] One end of the feedback resistor is connected to the output of the comparator, and the other end is connected to the non-inverting end of the input of the comparator. The feedback resistor is a resistor used to feed back a portion of the detection signal to the input of the comparator, thereby improving the stability of the comparator and reducing the impact of noise on the output detection signal.

[0069] A pull-up resistor is a resistor used to pull an input pin or signal line to a high level, which can ensure that the input pin remains in a known high level state when the signal line is not activated. That is, in this solution, when there is no input voltage at the input end of the comparator, the detection signal is kept as a high level signal, thereby avoiding the detection signal output to the logic control module from being in an uncertain state, thereby improving the stability of the intelligent power-off protection and voltage stabilization system.

[0070] In this solution, optionally, a voltage divider network may be provided at the input end of the comparator to divide the input voltage and the reference voltage, thereby adjusting the voltage input to the input end of the comparator and achieving the purpose of current limiting.

[0071] Figure 3 : is a structural example diagram of the automatic detection module provided in the second embodiment of the present application. Figure 3As shown, 5.6V is the input voltage, 3.3V_VDD is the reference voltage, U1A is the comparator, R1 is the feedback resistor, R3 is the pull-up resistor, PD_DETC is the detection signal, the in-phase end (pin 2) of the input end of U1A is connected to 5.6V, and the inverting end (pin 3) of the input end of the comparator is connected to 3.3V_VDD; Pin A of U1A is connected to 5V_SYS, and Pin G of U1A is grounded, wherein 5V_SYS is the power supply voltage for U1A; R2, R4, R5 and R6 are all resistors, which constitute a voltage divider network to adjust the voltage at the input end of U1A and play a current limiting role in the circuit.

[0072] The advantage of this arrangement of the present solution is that by setting a comparator to compare the input voltage with the reference voltage, real-time detection of the input voltage state can be achieved, by setting a feedback resistor, the stability of the detection signal can be improved, and by setting a pull-up resistor, the operating stability of the automatic detection module can be improved.

[0073] Embodiment 3

[0074] Figure 4 It is a structural diagram of the logic control module provided in Example 3 of the present application. This solution has made better improvements on the basis of the above embodiments, and the specific improvements are as follows: the logic control module includes: a microcontroller for receiving the detection signal and outputting a control instruction according to the detection signal; an NPN transistor including a base, an emitter and a collector, the base is connected to the output end of the microcontroller, the emitter is connected to the ground electrode, and is used to switch the first PMOS tube to a connected state when the base receives the control instruction; the first PMOS tube includes a gate, a source and a drain, the gate is connected to the collector of the NPN transistor, the source is connected to the supercapacitor module, and the drain is connected to the boost voltage regulator module, and is used to switch the working state of the supercapacitor module and the boost voltage regulator module to on in the connected state.

[0075] like Figure 4 As shown, the logic control module includes:

[0076] A microcontroller, used for receiving the detection signal and outputting a control instruction according to the detection signal;

[0077] An NPN transistor, comprising a base, an emitter and a collector, wherein the base is connected to the output end of the microcontroller, and the emitter is connected to the ground electrode, and is used for switching the first PMOS transistor to a connected state when the base receives the control instruction;

[0078] The first PMOS tube includes a gate, a source and a drain, wherein the gate is connected to the collector of the NPN transistor, the source is connected to the super capacitor module, and the drain is connected to the boost and voltage stabilizing module, and is used to switch the working states of the super capacitor module and the boost and voltage stabilizing module to on when in a connected state.

[0079] A microcontroller is an integrated circuit that may include a processor core, memory, input / output interface, and other peripherals. A control instruction may refer to an instruction output by the microcontroller for controlling the working state of the supercapacitor module and the boost voltage regulator module, which may be expressed as a high-level signal. When the detection signal received by the microcontroller is a low-level signal, the microcontroller outputs a high-level signal as a control instruction.

[0080] The NPN transistor is a bipolar transistor, which is composed of three layers of semiconductor materials, namely the base, emitter and collector. The base is used to control the current between the emitter and the collector, the emitter is used to inject electrons into the base, and the collector collects the electrons injected from the emitter. The emitter is connected to the ground, that is, the emitter is grounded. This setting can make the emitter have a low potential relative to the base when the microcontroller does not output a control instruction, there is no forward bias between the emitter and the base, and the collector current is close to 0, that is, the NPN transistor is in a disconnected state. When the microcontroller outputs a control instruction, the base of the NPN transistor receives a high-level signal, the electrons in the emitter are injected into the base, and some of the electrons enter the collector again. The voltage drop between the emitter and the collector gradually decreases, and the collector current is maximized, that is, the NPN transistor is in a connected state.

[0081] The PMOS tube is a field effect transistor, including a gate, a source and a drain. The gate of the first PMOS tube is connected to the collector of the NPN transistor. When the NPN transistor is in a connected state (i.e., the emitter and the collector are connected), since the emitter of the NPN transistor is connected to the ground electrode, the gate of the first PMOS tube is also equivalent to being connected to the ground electrode, so that the potential of the gate of the first PMOS tube is lower than the source, a PN junction is formed between the source and the drain, and the current flows from the source to the drain. Since the source of the first PMOS tube is connected to the supercapacitor module and the drain is connected to the boost voltage regulator module, when the current can flow from the source to the drain, it means that the current can flow from the supercapacitor module to the boost voltage regulator module, and the working state of the supercapacitor module and the boost voltage regulator module is turned on.

[0082] Figure 5 : is a structural example diagram of the logic control module provided in the third embodiment of the present application. Figure 5As shown, MCU is a microprocessor, PD_DETC is a detection signal, GPIO_A pin is used to receive the detection signal, and GPIO_B pin is used to output control instructions; Q1 is an NPN transistor, B is the base, E is the emitter, C is the collector, and GND is the ground; Q3 is the first PMOS tube, G is the gate, S is the source, and D is the drain. Optionally, it can also be as follows Figure 5 As shown, R7, R8, R9, C1, C2 and C3 are set; R7, R8 and R9 are resistors, used to limit the current and protect the components in the circuit from being damaged by excessive current, and are also used for voltage division and biasing; C1, C2 and C3 are capacitors, used for filtering, decoupling, energy storage, etc., to stabilize the voltage and reduce noise interference.

[0083] The advantage of this arrangement of the present scheme is that, by setting up a microprocessor, comprehensive coordination of various modules can be achieved, and intelligent management and control can be realized. By setting up an NPN transistor and a first PMOS tube, when the microcontroller outputs a control instruction, the supercapacitor module and the boost voltage regulator module can be directly connected, thereby simplifying the circuit design.

[0084] Embodiment 4

[0085] Figure 6 It is a structural diagram of the logic control module provided in the fourth embodiment of the present application. This scheme has made better improvements on the basis of the above embodiments, and the specific improvements are as follows: the supercapacitor module includes: a supercapacitor, including a positive electrode and a negative electrode, for outputting a standby discharge voltage; a second PMOS tube, including a gate, a source and a drain, the gate is connected to the emitter of the NPN transistor, the source is connected to the positive electrode of the supercapacitor, and the drain is connected to the source of the first PMOS tube, for transmitting the standby discharge voltage to the boost voltage regulator module in a connected state; a voltage regulator component is connected in parallel with the supercapacitor to keep the standby discharge voltage stable; accordingly, the NPN transistor is also used to switch the second PMOS tube to a connected state when the base receives the control instruction.

[0086] like Figure 6 As shown, the super capacitor module includes:

[0087] A supercapacitor, including a positive electrode and a negative electrode, for outputting a standby discharge voltage;

[0088] A second PMOS tube, comprising a gate, a source and a drain, wherein the gate is connected to the emitter of the NPN transistor, the source is connected to the positive electrode of the supercapacitor, and the drain is connected to the source of the first PMOS tube, and is used to transfer the standby discharge voltage to the boost stabilizing module in a connected state;

[0089] A voltage stabilizing component is connected in parallel with the supercapacitor and is used to keep the standby discharge voltage stable.

[0090] Supercapacitors, also known as electrochemical capacitors, are energy storage devices with high energy density and high power density. When the supercapacitor module is in the on state, the supercapacitor can be connected to the external circuit, thereby releasing the stored electrical energy and providing power supply for the load of the external circuit.

[0091] The gate of the second PMOS tube is connected to the emitter of the NPN transistor. When the NPN transistor is in a connected state (i.e., the emitter and the collector are connected), since the emitter of the NPN transistor is connected to the ground electrode, the gate of the second PMOS tube is also equivalent to being connected to the ground electrode, so that the potential of the gate of the second PMOS tube is lower than the source electrode, a PN junction is formed between the source electrode and the drain electrode, and the current flows from the source electrode to the drain electrode. Since the source electrode of the second PMOS tube is connected to the positive electrode of the super capacitor, and the drain electrode is connected to the source electrode of the first PMOS tube, when the current can flow from the source electrode of the second PMOS tube to the drain electrode (at this time, the first PMOS tube is also in a connected state), it means that the current can be output from the positive electrode of the super capacitor, pass through the second PMOS tube and the first PMOS tube, and finally input into the boost voltage regulator module.

[0092] The voltage stabilizing component may include a resistor and a voltage stabilizing tube. The voltage stabilizing component as a whole is connected in parallel with the supercapacitor, which can stabilize the voltage in the circuit and prevent voltage fluctuations from damaging the circuit.

[0093] Optionally, a supercapacitor, a PMOS tube and a voltage regulator component constitute a discharge unit. The supercapacitor module may include at least one discharge unit. The number of discharge units can be set according to the input voltage and the discharge voltage of the supercapacitor. The discharge units are connected in series.

[0094] In the present technical solution, optionally, the supercapacitor is also used to store electrical energy;

[0095] Correspondingly, the supercapacitor module further includes:

[0096] A third PMOS tube, comprising a gate, a source and a drain, wherein the gate is connected to the output end of the controlled end of the photocoupler and the ground electrode, the source receives an input voltage, and the drain is connected to the input end of the current flow control component, and is used to transfer the input voltage to the positive electrode of the super capacitor in a connected state;

[0097] A current flow control component, comprising at least two diodes, for preventing current from flowing to the third PMOS tube when the super capacitor outputs a standby discharge voltage; wherein the output end of the current flow control component is connected to the positive electrode of the super capacitor;

[0098] The photoelectric coupler comprises a main control end and a controlled end, wherein the input end of the main control end is connected to the positive electrode of the super capacitor, the output end of the main control end is connected to the ground electrode, and the input end of the controlled end receives an input voltage, and is used to switch the third PMOS tube to a disconnected state when the power state of the super capacitor is sufficient.

[0099] Figure 7 Schematic diagram of the structure of the logic control module provided in the fourth embodiment of the present application. Figure 7 As shown, the super capacitor module includes:

[0100] Supercapacitor, including positive and negative electrodes, used to output standby discharge voltage or store electrical energy;

[0101] A second PMOS tube, comprising a gate, a source and a drain, wherein the gate is connected to the emitter of the NPN transistor, the source is connected to the positive electrode of the supercapacitor, and the drain is connected to the source of the first PMOS tube, and is used to transfer the standby discharge voltage to the boost stabilizing module in a connected state;

[0102] A voltage stabilizing component, connected in parallel with the supercapacitor, for maintaining the standby discharge voltage stable;

[0103] A third PMOS tube, comprising a gate, a source and a drain, wherein the gate is connected to the output end of the controlled end of the photocoupler and the ground electrode, the source receives an input voltage, and the drain is connected to the input end of the current flow control component, and is used to transfer the input voltage to the positive electrode of the super capacitor in a connected state;

[0104] A current flow control component, comprising at least two diodes, for preventing current from flowing to the third PMOS tube when the super capacitor outputs a standby discharge voltage; wherein the output end of the current flow control component is connected to the positive electrode of the super capacitor;

[0105] The photoelectric coupler comprises a main control end and a controlled end, wherein the input end of the main control end is connected to the positive electrode of the super capacitor, the output end of the main control end is connected to the ground electrode, and the input end of the controlled end receives an input voltage, and is used to switch the third PMOS tube to a disconnected state when the power state of the super capacitor is sufficient.

[0106] The gate of the third PMOS tube is connected to the output end of the controlled end of the photocoupler and the grounding electrode. When the controlled end of the photocoupler is not connected, the gate of the third PMOS tube is equivalent to being grounded, so that the potential of the gate of the third PMOS tube is lower than the source, a PN junction is formed between the source and the drain, and the current flows from the source to the drain. Since the source of the third PMOS tube receives the input voltage, the drain is connected to the input end of the current flow control component, and the output end of the current flow control component is connected to the positive electrode of the super capacitor, when the current can flow from the source of the third PMOS tube to the drain (at this time, the first PMOS tube and the second PMOS tube are in a disconnected state), it means that the input voltage can transfer the current to the positive electrode of the super capacitor, so that the electric energy stored in the super capacitor increases.

[0107] A photocoupler is an electronic component used to convert optical signals into electrical signals or vice versa. The basic principle of a photocoupler is to use the sensitivity of a photosensitive element to light. After the light source emits a light signal, the light shines on the photosensitive element, which then produces a photoelectric effect and generates a current or voltage signal. The master end of the photocoupler is used to generate a light signal, and the controlled end of the photocoupler is used to receive the light signal and convert it into an electrical signal. As the electric energy stored in the supercapacitor continues to increase, the positive electrode potential of the supercapacitor continues to increase, causing the current transmitted by the input voltage to gradually flow to the main control end of the photoelectric coupler. The current flows from the input end to the output end of the main control end of the photoelectric coupler, causing the main control end to generate an optical signal. The controlled end of the photoelectric coupler receives the optical signal and converts it into an electrical signal. Since the input end of the controlled end receives the input voltage, the current flows from the input end to the output end of the controlled end. Since the gate of the third PMOS tube is connected to the output end of the controlled end of the photoelectric coupler, the current flows to the gate of the third PMOS tube, causing the gate potential of the third PMOS tube to increase, thereby causing the current between the source and drain of the third PMOS tube to be interrupted, and the current cannot flow to the positive electrode of the supercapacitor.

[0108] The current flow control component includes at least two diodes, which are connected in parallel and can be flexibly selected according to the design requirements of the circuit. The diode has a unidirectional conductive characteristic, and the input end of the current flow control component (i.e., the input end of the diode) is connected to the drain of the third PMOS tube, and the output end of the current flow control component (i.e., the output end of the diode) is connected to the positive electrode of the supercapacitor, which can prevent the current formed by the standby discharge voltage from flowing to the third PMOS tube when the working state of the supercapacitor module is turned on (i.e., the supercapacitor outputs the standby discharge voltage).

[0109] In this technical solution, optionally, the supercapacitor module further includes:

[0110] A first resistor is connected in series with the source of the third PMOS transistor, and is used to control the current passing through the third PMOS transistor and provide a bias voltage for the PNP transistor;

[0111] A PNP transistor, comprising a base, an emitter and a collector, wherein the base is connected to the source of the third PMOS transistor, the emitter receives an input voltage, and the collector is connected to the second resistor, and is used to shunt the current to flow to the second resistor in a connected state;

[0112] The second resistor is connected in series with the gate of the third PMOS tube and the ground electrode, and is used to release over-current and over-voltage energy.

[0113] The PNP transistor is a bipolar transistor, including a base, an emitter and a collector. The first resistor is connected in series with the input voltage and the source of the third PMOS tube, the base of the PNP transistor is connected to the source of the third PMOS tube, and the emitter of the PNP transistor receives the input voltage, indicating that the first resistor and the PNP transistor are connected in parallel, and a bias voltage can be provided for the PNP transistor. Providing a bias voltage means that the emitter potential of the PNP transistor is higher than the base potential.

[0114] The first resistor can limit the current flowing from the input voltage to the third PMOS tube, that is, limit the current passing through the third PMOS tube, that is, the current transmitted to the positive electrode of the supercapacitor. By changing the size of the first resistor, the charging speed can be adjusted.

[0115] When the voltage of the first resistor is too large, the emitter and collector of the PNP transistor are connected, and part of the current flows from the emitter of the PNP transistor to the collector. Since the emitter of the PNP transistor is connected to the gate of the third PMOS transistor, and the second resistor is connected in series with the gate of the third PMOS transistor and the grounding electrode, the current can flow from the emitter of the PNP transistor to the grounding electrode through the second resistor, and the current generates heat when flowing through the second resistor to release the overcurrent and overvoltage energy.

[0116] The advantage of this arrangement of the present solution is that, by setting the first resistor, the PNP transistor and the second resistor, the charging speed of the supercapacitor can be adjusted and overcurrent and overvoltage of the circuit can be prevented.

[0117] The advantage of this arrangement of the present solution is that the automatic start and interruption of the supercapacitor charging mode can be achieved by arranging the photoelectric coupler and the third PMOS tube, and the operating stability of the supercapacitor module can be improved by arranging the current flow control component.

[0118] Figure 8 : is a structural example diagram of a supercapacitor module provided in Example 4 of the present application. Figure 8As shown, C10 and C12 are supercapacitors, Q5 and Q6 are the second PMOS tubes, U4 and U5 are voltage regulator tubes, R15, R18, R23, R25, R26 and R27 are resistors, U4, R15, R18 and R23 form a voltage regulator component, U5, R25, R26 and R27 form a voltage regulator component, C10, Q5, U4, R15, R18 and R23 form a discharge unit, C12, Q6, U5, R25, R26 and R27 form a discharge unit; U3 is an optocoupler, Q2 is a third PMOS tube, D1 and D3 are diodes, and D1 and D3 form a current flow control component; R10 is the first resistor, R20 is the second resistor, Q4 is a PNP transistor, B is the base, E is the emitter, and C is the collector. Optionally, it can also be as follows Figure 8 As shown, R17 and R19 are set as resistors for current limiting; D4 is set as a voltage stabilizing diode for providing a reference voltage for U3 and stabilizing the voltage in the circuit to prevent voltage fluctuations from damaging the circuit; C9 is set as a capacitor to achieve RC filtering together with R20.

[0119] The benefit of this arrangement of the solution is that by setting up a supercapacitor, the electronic device can continue to be supplied with power when the input voltage is abnormal, thereby preventing data loss, hardware damage or system crash in the electronic device.

[0120] Embodiment 5

[0121] Fig. 9 It is a structural diagram of the logic control module provided in the fifth embodiment of the present application. This scheme makes better improvements on the basis of the above embodiments, and the specific improvements are as follows: the boost voltage stabilizing module includes: an internal integrated switch element, which is used to control the boost conversion component according to the standby discharge voltage and / or the feedback signal of the voltage stabilizing feedback component to obtain the output voltage; the boost conversion component includes an inductor and a diode, which is used to increase or convert the input voltage under the control of the internal integrated switch element; wherein the inductor is used to store or release energy; the diode is used to provide a freewheeling path for the inductor when the internal integrated switch element is turned off; the voltage stabilizing feedback component is used to feed back the output voltage to obtain a feedback signal; the control protection component is used to start or stop the boost voltage stabilizing module, and test the boost voltage stabilizing module.

[0122] like Fig. 9 As shown, the boost and voltage stabilization module comprises:

[0123] An internal integrated switch element is used to control the boost conversion component to obtain an output voltage according to the standby discharge voltage and / or the feedback signal of the voltage stabilization feedback component;

[0124] A boost conversion component, comprising an inductor and a diode, for increasing or converting an input voltage under the control of the internal integrated switch element; wherein the inductor is used to store or release energy; and the diode is used to provide a freewheeling path for the inductor when the internal integrated switch element is turned off;

[0125] A voltage stabilization feedback component is used to provide feedback on the output voltage to obtain a feedback signal;

[0126] The control protection component is used to start or stop the boost and voltage stabilization module and to test the boost and voltage stabilization module.

[0127] The internal integrated switch element may refer to an integrated circuit with a switch function. The opening and closing of the internal integrated switch element can realize the control of the working state of the boost conversion component to obtain the output voltage. The internal integrated switch element can adjust the switching frequency or duty cycle according to the standby discharge voltage and / or the feedback signal of the voltage stabilization feedback component. Among them, the output voltage can be a voltage in a state of high precision and high stability.

[0128] The boost conversion component includes an inductor and a diode. Among them, the inductor is a passive component used to store electrical energy and impedance changes. When the internal integrated switch element is turned on, current is input to the inductor, and the inductor stores energy; when the internal integrated switch element is turned off, the energy in the inductor is released to the output end of the boost voltage regulator module through the diode as the output voltage.

[0129] The voltage stabilization feedback component may include a voltage reference point, a voltage divider, and a capacitor. The voltage reference point is used to compare with the output voltage. The voltage divider is used to divide the output voltage to obtain a feedback signal. The capacitor is used to filter and stabilize the feedback signal together with the amplifier, switch selector, and ground terminal in the internal integrated switch element. The essence of the feedback signal is part of the output voltage.

[0130] The control protection component may include a test point and a ground point. The test point serves as a test interface for the boost voltage regulator module, and the ground point serves as a common reference point for the boost voltage regulator module. The enable pin in the internal integrated switch element may be used to start or stop the boost voltage regulator module. When the control protection component is used for testing, the boost voltage regulator module may be stopped by the enable pin in the internal integrated switch element when an abnormality is detected.

[0131] In the technical solution, optionally, the internal integrated switch element includes a comparator, a switch selector and a ground terminal;

[0132] The voltage stabilizing feedback component comprises:

[0133] A voltage reference point to compare the output voltage to;

[0134] A voltage divider device, used to divide the output voltage to obtain a feedback signal;

[0135] A capacitor is used for filtering and stabilizing the feedback signal together with the comparator, the switch selector and the ground terminal.

[0136] The voltage reference point is a point in an electronic circuit that is used to provide a stable voltage reference. In this scheme, it is used to compare with the output voltage to adjust the output voltage.

[0137] The voltage divider device may include a resistor and a capacitor. The voltage divider device forms a voltage divider network to divide the output voltage, and a portion of the output voltage obtained by the voltage division is used as a feedback signal.

[0138] The capacitor in the voltage stabilization feedback component is connected to the comparator, and the capacitor is used to filter and stabilize the feedback signal. The ground terminal refers to the part of the internal integrated switch element that is used to provide a ground connection. The comparator and the ground terminal are also used to filter and stabilize the feedback signal. The switch selector is a component used to select different signal sources or paths. In this solution, it is used to control the internal integrated switch element to turn on and off according to the switching frequency or duty cycle.

[0139] The advantage of this arrangement of the present solution is that a negative feedback mechanism of the output voltage can be realized through the voltage reference point, the voltage divider, the capacitor, and the comparator, the switch selector and the ground terminal included in the internal integrated switch element, thereby achieving real-time monitoring and adjustment of the output voltage.

[0140] In the technical solution, optionally, the internal integrated switch element includes an enable pin; wherein the enable pin is used to start or stop the boost voltage regulator module;

[0141] The control and protection component comprises:

[0142] A test point, serving as a test interface for the boost and voltage stabilization module;

[0143] The grounding point serves as a common reference point for the boost and voltage stabilization module.

[0144] The enable pin is a control pin in an electronic device or integrated circuit that is used to start or disable the function of the device. The enable pin in this solution can start or stop the boost regulator module.

[0145] The test point is a specific location in the circuit used for measurement and debugging. It serves as a test interface for the boost regulator module so that the staff can make electrical measurements without interfering with the normal operation of the circuit.

[0146] The ground point is the point in the circuit that is connected to the ground and is used to provide a common reference potential in the boost regulator module.

[0147] The advantage of this arrangement of the present solution is that by setting the enable pin, test point and ground point, the performance of the boost regulator module can be monitored, and the boost regulator module can be shut down in time when an abnormality is detected to improve the safety of the circuit.

[0148] Fig.10 : is a structural example diagram of the boost and voltage stabilization module provided in the fifth embodiment of the present application. Fig.10 As shown, 5.0V_BOOST is the standby discharge voltage, 5.0V_SYS is the output voltage, in addition, C4, C6 and C7 are capacitors, C4 is used to filter and stabilize the standby discharge voltage, C6 and C7 are used to filter and stabilize the output voltage; U2 is an internal integrated switching element, COMP is a comparator, SS is a switch selector, GND is a ground terminal, and EN is an enable pin; L1 is an inductor in the boost conversion component, D2 is a diode in the boost conversion component, in addition, R11 and R21 are resistors, R11 and R21 are used for voltage division; 5.0V_FB is a voltage reference point, R14 and R24 are resistors, which can form a voltage divider network together with R11 and R21; C8 is a capacitor used to filter and stabilize the feedback signal; T1 and T2 are test points.

[0149] Fig.11 This is a structural example diagram of the intelligent power-off protection and voltage stabilization system provided in Example 5 of the present application. Figure 3 , Figure 5 , Figure 8 as well as Fig.10 The combination connection method is as follows Fig.11 shown.

[0150] The benefit of this arrangement of the present invention is that by providing internal integrated switching elements, boost conversion components, voltage stabilization feedback components and control protection components, the stability and anti-fluctuation capability of the output voltage can be improved, and the influence of external interference and load changes on the output voltage can be effectively suppressed.

[0151] Embodiment 6

[0152] Fig.12 1 is a flow chart of a control method for an intelligent power-off protection and voltage stabilization system provided in Example 6 of the present application. Fig.12 As shown, the specific steps include:

[0153] S1201, detecting the input voltage through an automatic detection module and outputting a detection signal;

[0154] S1202, controlling the working states of the supercapacitor module and the boost and voltage stabilization module according to the detection signal through a logic control module;

[0155] S1203, when the working state of the super capacitor module is turned on, it serves as a backup power supply and outputs a backup discharge voltage;

[0156] S1204: When the working state of the boost and voltage stabilization module is turned on, perform boost and voltage stabilization regulation processing on the standby discharge voltage.

[0157] In the embodiment of the present application, the input voltage is detected by the automatic detection module, and a detection signal is output; the working state of the supercapacitor module and the boost and voltage stabilization module is controlled by the logic control module according to the detection signal; when the working state of the supercapacitor module is turned on, it serves as a backup power supply and outputs a backup discharge voltage; when the working state of the boost and voltage stabilization module is turned on, the backup discharge voltage is boosted and regulated. The control method of the above-mentioned intelligent power-off protection and voltage stabilization system can realize real-time monitoring of the input voltage, and provide power-off protection in time when an abnormality is detected, and boost and stabilize the output voltage of the power-off protection to provide a stable voltage output for the external circuit, thereby ensuring the safety of the electronic device and its stored data.

[0158] Embodiment 7

[0159] Fig.13 Schematic diagram of the structure of the electronic device provided in Embodiment 7 of the present application. Fig.13 As shown, an embodiment of the present application also provides an electronic device 1300, including a processor 1301, a memory 1302, and a program or instruction stored in the memory 1302 and executable on the processor 1301. When the program or instruction is executed by the processor 1301, each process of the above-mentioned embodiment of the height repair device combined with mask information is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0160] It should be noted that the electronic devices in the embodiments of the present application include the mobile electronic devices and non-mobile electronic devices mentioned above.

[0161] Embodiment 8

[0162] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned height repair device embodiment combined with mask information are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0163] The processor is a processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0164] Embodiment 9

[0165] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned embodiment of the height repair device combined with mask information, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0166] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0167] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes 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 one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0168] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0169] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

[0170] The above are only preferred embodiments of the present application and the technical principles used. The present application is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions that can be made by those skilled in the art will not deviate from the scope of protection of the present application. Therefore, although the present application is described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the claims.

Claims

1. An intelligent power-off protection and voltage stabilization system, characterized in that: The intelligent power-off protection and voltage stabilization system comprises: Automatic detection module, used to detect input voltage and output detection signal; A logic control module, connected to the automatic detection module, for controlling the working states of the supercapacitor module and the boost and voltage stabilization module according to the detection signal; A supercapacitor module, connected to the logic control module, for serving as a backup power supply and outputting a backup discharge voltage when the working state is turned on; A boost and voltage stabilization module is connected to the logic control module and the supercapacitor module, and is used for performing boost and voltage stabilization regulation processing on the standby discharge voltage when the working state is turned on.

2. The intelligent power-off protection and voltage stabilization system according to claim 1, characterized in that: The automatic detection module comprises: A comparator, used to respectively connect an input voltage and a reference voltage at an input end, and output a detection signal according to a comparison result; wherein the detection signal includes a high level signal and a low level signal; A feedback resistor connected to the output terminal of the comparator and used to feed back the detection signal to the input terminal of the comparator; The pull-up resistor is connected to the output terminal of the comparator and receives a reference voltage, and is used to keep the detection signal as a high level signal when there is no input voltage at the input terminal of the comparator.

3. The intelligent power-off protection and voltage stabilization system according to claim 1, characterized in that: The logic control module comprises: A microcontroller, used for receiving the detection signal and outputting a control instruction according to the detection signal; An NPN transistor, comprising a base, an emitter and a collector, wherein the base is connected to the output end of the microcontroller, and the emitter is connected to the ground electrode, and is used for switching the first PMOS transistor to a connected state when the base receives the control instruction; The first PMOS tube includes a gate, a source and a drain, wherein the gate is connected to the collector of the NPN transistor, the source is connected to the super capacitor module, and the drain is connected to the boost and voltage stabilizing module, and is used to switch the working states of the super capacitor module and the boost and voltage stabilizing module to on when in a connected state.

4. The intelligent power-off protection and voltage stabilization system according to claim 3 is characterized in that: The supercapacitor module comprises: A supercapacitor, including a positive electrode and a negative electrode, for outputting a standby discharge voltage; A second PMOS tube, comprising a gate, a source and a drain, wherein the gate is connected to the emitter of the NPN transistor, the source is connected to the positive electrode of the supercapacitor, and the drain is connected to the source of the first PMOS tube, and is used to transfer the standby discharge voltage to the boost stabilizing module in a connected state; A voltage stabilizing component, connected in parallel with the supercapacitor, for maintaining the standby discharge voltage stable; Correspondingly, the NPN transistor is also used to switch the second PMOS transistor to a connected state when the base receives the control instruction.

5. The intelligent power-off protection and voltage stabilization system according to claim 4 is characterized in that: The supercapacitor is also used to store electrical energy; Correspondingly, the supercapacitor module further includes: A third PMOS tube, comprising a gate, a source and a drain, wherein the gate is connected to the output end of the controlled end of the photocoupler and the ground electrode, the source receives an input voltage, and the drain is connected to the input end of the current flow control component, and is used to transfer the input voltage to the positive electrode of the super capacitor in a connected state; A current flow control component, comprising at least two diodes, for preventing current from flowing to the third PMOS tube when the super capacitor outputs a standby discharge voltage; wherein the output end of the current flow control component is connected to the positive electrode of the super capacitor; The photoelectric coupler comprises a main control end and a controlled end, wherein the input end of the main control end is connected to the positive electrode of the super capacitor, the output end of the main control end is connected to the ground electrode, and the input end of the controlled end receives an input voltage, and is used to switch the third PMOS tube to a disconnected state when the power state of the super capacitor is sufficient.

6. The intelligent power-off protection and voltage stabilization system according to claim 5, characterized in that: The supercapacitor module further includes: A first resistor is connected in series with the source of the third PMOS transistor, and is used to control the current passing through the third PMOS transistor and provide a bias voltage for the PNP transistor; A PNP transistor, comprising a base, an emitter and a collector, wherein the base is connected to the source of the third PMOS transistor, the emitter receives an input voltage, and the collector is connected to the second resistor, and is used to shunt the current to flow to the second resistor in a connected state; The second resistor is connected in series with the gate of the third PMOS tube and the ground electrode, and is used to release over-current and over-voltage energy.

7. The intelligent power-off protection and voltage stabilization system according to claim 1, characterized in that: The boost and voltage stabilization module comprises: An internal integrated switch element is used to control the boost conversion component to obtain an output voltage according to the standby discharge voltage and / or the feedback signal of the voltage stabilization feedback component; A boost conversion component, comprising an inductor and a diode, for increasing or converting an input voltage under the control of the internal integrated switch element; wherein the inductor is used to store or release energy; and the diode is used to provide a freewheeling path for the inductor when the internal integrated switch element is turned off; A voltage stabilization feedback component is used to provide feedback on the output voltage to obtain a feedback signal; The control protection component is used to start or stop the boost and voltage stabilization module and to test the boost and voltage stabilization module.

8. The intelligent power-off protection and voltage stabilization system according to claim 7, characterized in that: The internal integrated switch element includes a comparator, a switch selector and a ground terminal; The voltage stabilizing feedback component comprises: A voltage reference point to compare the output voltage to; A voltage divider device, used to divide the output voltage to obtain a feedback signal; A capacitor is used for filtering and stabilizing the feedback signal together with the comparator, the switch selector and the ground terminal.

9. The intelligent power-off protection and voltage stabilization system according to claim 7, characterized in that: The internal integrated switch element includes an enable pin; wherein the enable pin is used to start or stop the boost voltage regulator module; The control and protection component comprises: A test point, serving as a test interface for the boost and voltage stabilization module; The grounding point serves as a common reference point for the boost and voltage stabilization module.

10. A control method for an intelligent power-off protection and voltage stabilization system, characterized in that: The method is performed by the intelligent power-off protection and voltage stabilization system according to any one of claims 1 to 9; the method comprises: The input voltage is detected by the automatic detection module, and a detection signal is output; Controlling the working states of the supercapacitor module and the boost and voltage stabilization module according to the detection signal through the logic control module; When the supercapacitor module is in the on state, it serves as a backup power supply and outputs a backup discharge voltage; When the working state of the boost and voltage stabilization module is turned on, the standby discharge voltage is boosted and regulated.

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