CN218299070U

CN218299070U - Security defense device, electronic equipment and intelligent door lock

Info

Publication number: CN218299070U
Application number: CN202221912168.6U
Authority: CN
Inventors: 常伟; 邹勇
Original assignee: Yunding Network Technology Beijing Co Ltd
Current assignee: Yunding Network Technology Beijing Co Ltd
Priority date: 2022-07-21
Filing date: 2022-07-21
Publication date: 2023-01-13
Anticipated expiration: 2032-07-21

Abstract

The embodiment of the disclosure discloses a safety defense device, electronic equipment and an intelligent door lock. One embodiment of the apparatus comprises: the touch piece is electrically connected with the circuit board; the touch chip is electrically connected with the circuit board and is used for controlling the electronic equipment to enter a defense state when the electromagnetic interference signal is detected. The scheme disclosed by the invention realizes active defense rather than passive defense against electromagnetic attack, controls the equipment to enter a defense state when the equipment is attacked by the electromagnetic attack, protects the main functional components of the equipment and improves the safety of the equipment.

Description

Security defense device, electronic equipment and intelligent door lock

Technical Field

The embodiment of the disclosure relates to the technical field of intelligent door locks, in particular to a security defense device, electronic equipment and an intelligent door lock.

Background

Security intelligent devices, such as door locks, safe locks, car locks, etc., are often the subject of malicious damage by an entry thief as a barrier that is most important to ensure the safety of property and personnel in a house. Some lawbreakers seek to open the security intelligent device without authentication in a way of interfering with an electronic system of the security intelligent device. Moreover, more and more full-automatic security intelligent devices are used, and a plurality of security intelligent devices can be unlocked indoors by pressing an unlocking key or a capacitive touch key. Compared with the situation that unlocking outside a door needs password and fingerprint authentication, the unlocking mode inside the door does not need identity information identification, and unlocking is easily caused by electromagnetic attack.

In the prior art, the protection of the security intelligent equipment against electromagnetic attack only stays in a passive protection stage, namely, the security intelligent equipment cannot be unlocked when being attacked by the electromagnetic attack through strengthening physical protection, active defense cannot be carried out, and even system disorder is caused.

Disclosure of Invention

The embodiment of the disclosure provides a security defense device, electronic equipment and an intelligent door lock.

In a first aspect, an embodiment of the present disclosure provides a security defense apparatus, disposed in an electronic device, and including: the touch piece, the circuit board and the touch chip are arranged on the circuit board;

the touch piece is electrically connected with the circuit board;

the touch chip is electrically connected with the circuit board and used for controlling the electronic equipment to enter a defense state when the electromagnetic interference signal is detected.

In some embodiments, the touch member and the capacitive touch chip are connected through a bus on the circuit board, wherein the touch chip sends a control signal to a main control unit of the electronic device based on the touch member being triggered.

In some embodiments, further comprising: a fixing plate;

the fixed plate is connected with the circuit board, and the touch piece is arranged on one side, far away from the fixed plate, of the circuit board.

In some embodiments, the touch chip is electrically connected with a main control unit in the electronic device, and based on the touch piece being triggered, the touch chip sends a control signal to the main control unit in the electronic device, and the main control unit in the electronic device controls the electronic device to enter a defense state in response to the control signal.

In some embodiments, in response to the control signal, a master control unit in the electronic device sends a power-off signal to a drive unit in the electronic device to disconnect the drive unit of the electronic device from the power supply system.

In some embodiments, in response to the control signal, a master control unit in the electronic device sends an alert signal to an alert unit in the electronic device to notify a user of the electronic device.

In some embodiments, the touching member is at least one.

In some embodiments, the touch chip is electrically connected to a timing device in the electronic device, and based on a time signal sent by the timing device, the touch chip sends an exit instruction to a main control unit of the electronic device after the electronic device enters the defense state for a predetermined period of time and/or in response to acquiring the recovery instruction, so as to control the electronic device to exit the defense state.

In a second aspect, embodiments of the present disclosure provide an electronic device including the security defense apparatus of any one of the first aspects.

In some embodiments, an electronic device includes: a main control unit, a power supply system, a power-off switch, a driving unit, an alarm unit and a timing device, wherein,

the main control unit is electrically connected with the safety defense device, the driving unit and the alarm unit,

the power-off switch is connected between the driving unit and the power system, the safety defense device sends an electric signal to the main control unit, the main control unit controls the electronic equipment to enter a defense state according to the received electric signal,

wherein, the safety defense device sends a power-off signal to the main control unit, the main control unit disconnects the connection between the drive unit of the electronic equipment and the power supply system according to the received power-off signal,

the security defense device sends an alarm signal to the main control unit, and the main control unit sends out an alarm signal according to the received alarm signal so as to inform a user of the electronic equipment;

the timing device is electrically connected with the safety defense device, and based on the time signal sent by the timing device, the safety defense device sends an exit instruction to the main control unit after the electronic equipment enters the defense state for a preset time period and/or in response to the recovery instruction, so as to control the electronic equipment to exit the defense state.

In a third aspect, an embodiment of the present disclosure provides an intelligent door lock, including an intelligent door lock main body and the security defense apparatus of any one of the first aspect.

In summary, the safety defense apparatus provided according to the embodiment of the disclosure is disposed in an electronic device, and includes: the touch screen comprises a circuit board, a touch piece and a touch chip; the touch piece is electrically connected with the circuit board; the touch chip is electrically connected with the circuit board and is used for controlling the electronic equipment to enter a defense state when the electromagnetic interference signal is detected. The scheme disclosed by the invention realizes active defense rather than passive defense against electromagnetic attack, controls the equipment to enter a defense state when the equipment is attacked by the electromagnetic attack, protects the main functional components of the equipment and improves the safety of the equipment.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below. It should be apparent that the drawings in the following description are merely examples or embodiments of the disclosure, and that other drawings may be derived from the provided drawings by those of ordinary skill in the art without inventive effort, and that the disclosure may be applied to other similar scenarios from the provided drawings. Unless otherwise apparent from the context, or otherwise indicated, like reference numbers in the figures refer to the same structure or operation.

FIG. 1 is a block diagram schematic of the components of a security defense apparatus according to the present disclosure;

FIG. 2 is a block diagram schematic of the components of an electronic device according to the present disclosure;

FIG. 3 is a schematic diagram of signal trends in an electronic device under electromagnetic interference according to the present disclosure;

FIG. 4 is a block diagram of an intelligent door lock according to the present disclosure;

FIG. 5 is a block diagram illustrating the structure of a specific security defense apparatus 100 for an intelligent door lock according to the present disclosure;

FIG. 6 is a schematic diagram illustrating the connection of a security defense apparatus 100 of an embodiment of an intelligent door lock according to the present disclosure;

fig. 7 is a schematic view of an intelligent door lock according to the present disclosure.

Detailed Description

The present disclosure is described in further detail below with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. The described embodiments are only a few embodiments of the present disclosure, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings. The embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict.

It should be understood that "system", "apparatus", "unit" and/or "module" as used in this disclosure is a method for distinguishing different components, elements, parts or assemblies at different levels. However, other words may be substituted by other expressions if they accomplish the same purpose.

As used in this disclosure and in the claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements. An element defined by the phrase "comprising a component of ' 8230 ' \8230; ' does not exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

Wherein in the description of the embodiments of the present disclosure, "/" denotes an or meaning, for example, a/B may denote a or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present disclosure, "a plurality" means two or more than two.

In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Flowcharts are used in this disclosure to illustrate the operations performed by systems according to embodiments of the present disclosure. It should be understood that the preceding or following operations are not necessarily performed in the exact order in which they are performed. Rather, the various steps may be processed in reverse order or simultaneously. Meanwhile, other operations may be added to or removed from these processes.

Door locks, which are the most important barrier for ensuring the safety of property and people in houses, are often the subject of malicious damage by intruders. Some lawbreakers have sought to unlock an intelligent door lock without authentication by interfering with the electronic system of the intelligent door lock. And full-automatic door lock is more and more, and a lot of locks can also be unblanked through pressing the key or capacitanc touch button in indoor. Compared with the situation that unlocking outside a door needs password and fingerprint authentication, the unlocking mode inside the door does not need identity information identification, and unlocking is easily caused by electromagnetic attack. The electromagnetic attack means that an electromagnetic generator (a Tesla coil, commonly called a small black box, a high-power interphone or other high-power electromagnetic equipment) is used for interfering the intelligent door lock to try to interfere the intelligent door lock so as to achieve the purpose of opening the intelligent door lock.

In the prior art, the protection of the security intelligent device against electromagnetic attack only stays in a passive protection stage, namely, the security intelligent device cannot be unlocked when being attacked by the electromagnetic attack by strengthening physical protection, the effect of actively detecting the electromagnetic attack is not ideal enough, active defense cannot be performed, and even a system disorder is caused. In the prior art, active detection is not performed on electromagnetic attack, and a system cannot enter a defense state when security intelligent equipment is attacked by the electromagnetic attack, so that the security intelligent equipment cannot be started, but system function disorder or short-time recovery cannot be caused, and illegal attack cannot be alarmed (because active detection is not performed).

The present disclosure is directed to solving the problems in the related art, and provides a security defense scheme by providing an electromagnetic attack detection circuit. Through the scheme, active detection and defense of electromagnetic attack can be realized, security intelligent equipment is more intelligent and safer, and a user can master the safety state more comprehensively.

This openly is applicable to smart machine's electromagnetic attack, smart machine can be a security protection smart machine, and smart machine includes: intelligent lock, intelligent cabinet, intelligent lock, car lock, cabinet lock etc. are kept to intelligence.

Referring to FIG. 1, a block diagram of a security defense apparatus 100 is shown, in accordance with an embodiment of the present disclosure. The security defense apparatus may be disposed in an electronic device, which may be specifically an electronic door lock, but the present disclosure is not limited to the type of electronic device. The safety defense device comprises the following components: the method comprises the following steps: a touch member 101, a circuit board 102, and a touch chip 103.

In this embodiment, the security defense device 100 further includes: and a fixing plate connected with the circuit board 102.

The fixing plate and the circuit board 102 may be mechanically connected or may be placed opposite to each other with an air gap, but this embodiment does not limit this, and other connection manners may also be used according to specific requirements.

The fixing plate may be made of glass, acrylic or other materials, which is not limited in this embodiment.

The fixing plate may be, for example, a panel, i.e., a panel of an intelligent door lock, a handle, etc. The circuit board may be a PCB board, which is not limited in this embodiment.

In the present embodiment, the touching member 101 is arranged on the side of the circuit board 102 away from the fixed plate and electrically connected to the circuit board 102.

The touch member may be a capacitor, for example, a capacitive touch key, or may be another sensor element capable of sensing, for example, a temperature sensor element, which is not limited in this embodiment.

The touch member setting position includes: at least one of a password area, a biometric area, an inner panel unlock key/unlock capacitor key area. The touching piece is at least one.

The touch member 101 is a touch key, and recognizes a touch operation of a human hand by detecting a change in capacitance of the capacitor PAD when a human finger touches the touch member. The touch member 101 is normally disposed on a side of the circuit board 102 close to the fixing plate, and is disposed on a side away from the fixing plate in consideration of triggering the key when a human hand touch is not expected. The touching part 101 can be triggered when the electromagnetic attack occurs, so that the electromagnetic attack detection is realized.

Because the touch piece 101 is a hidden touch key, the touch piece will not be triggered in the normal unlocking process through the touch of a human hand, and therefore the touch piece is arranged at a position far away from the fixed plate, the touch piece is essentially a capacitor, the capacitor changes through electromagnetic attack, and therefore detection and early warning are achieved through the structures of the capacitor oscillation circuit, the frequency detection processing circuit and the driving circuit.

In the present embodiment, the touch chip 103 is electrically connected to the circuit board 102 and is used to control the electronic device to enter a defense state when an electromagnetic interference signal is detected.

The touch member 101 is triggered when an electromagnetic interference signal exists, and the touch chip 103 is used for controlling the electronic device to enter a defense state when the touch member 101 is triggered. That is, the touch chip 103 determines whether an electromagnetic attack occurs by whether the capacitance of the touch member 101 changes, i.e., substantially, an electromagnetic attack detection based on the capacitance.

The touch chip may adopt a capacitor, for example, the touch chip may be a capacitive touch chip, which is not limited in this embodiment.

The safety defense device provided by the embodiment of the disclosure is electrically connected with the circuit board 102 through the touch piece 101; the touch chip 103 is electrically connected with the circuit board 102, active defense rather than passive defense against electromagnetic attack is realized, the device is controlled to enter a defense state when the device is attacked by the electromagnetic attack, main functional components of the device are protected, and the safety of the device is improved.

Based on the above-mentioned structure of a security defense apparatus, fig. 2 specifically shows a block diagram of a structure of an electronic device 200 according to an embodiment of the present disclosure.

As shown in fig. 2, includes: the security defense device 100, a main control unit 201, a power supply system 202, a power-off switch 203, a driving unit 204, an alarm unit 205 and a timing device 206.

In the embodiment of the present disclosure, the main control unit 201 is in communication connection with the security defense apparatus 100, the driving unit 204, and the alarm unit 205.

In the embodiment of the present disclosure, the power system 202 is used to supply power to the security defense apparatus 100, the main control unit 201, the driving unit 204, and the alarm unit 205 (as shown by the bold black arrow in fig. 2), and the power-off switch 203 is connected between the driving unit 204 and the power system 202.

The touch chip in the security defense apparatus 100 is electrically connected to the main control unit 201, specifically, the touch chip may be electrically connected to the same circuit board, or may be electrically connected between modules, which is not limited in this embodiment.

The touch key is used for actively detecting electromagnetic attack, and the intelligent door lock is in a defense state after the electromagnetic attack is detected, wherein the defense state includes but is not limited to cutting off the circuit power supply of the unlocking driving unit. Meanwhile, the intelligent door lock scares away lawless persons through local sound alarm, remote telephone alarm and other modes to inform the owner of the electromagnetic attack event in time.

Specifically, when the security defense device 100 detects the electromagnetic interference signal, the security defense device 100 sends an electrical signal to the main control unit 201 to control the electronic device to enter the defense state,

the electrical signal includes a control signal and/or an alarm signal, the control signal is used to instruct the main control unit 201 to send a power-off signal to the power-off switch 203 to disconnect the connection between the driving unit 204 and the power system 202, and the alarm signal is used to instruct the main control unit 201 to send an alarm signal to the alarm unit 205 to notify a user of the electronic device. The manner of notification is not limited to local voice alerts, remote telephone alerts, etc. Specifically, as shown in fig. 3, in the embodiment of the present disclosure, a schematic diagram of signal trend in an electronic device under electromagnetic interference is provided.

And, the touch chip 103 is electrically connected to the timing device 206, and controls the electronic device to exit the defense state after the electronic device enters the defense state for a predetermined period of time and/or in response to acquiring a recovery instruction.

The recovery instruction may be obtained by a user, or may be automatically sent by the touch chip 103 when the electromagnetic interference signal is not detected within a certain time period, which is not limited in this embodiment. The timing device 206 may be a timer or a clock chip, which is not limited in this embodiment.

The defensive state includes disabling an identity authentication function of the electronic device. The identity authentication function may include, but is not limited to, a password input function, a fingerprint recognition function, a face recognition function, an iris recognition function, and the like, which is not limited in this embodiment. That is, after entering the defense state, the device will not allow the operations of inputting a password, fingerprint identification, etc. for identity authentication.

The safety defense device provided by the embodiment of the disclosure is characterized in that the safety defense device is arranged, and is in communication connection with the safety defense device 100, the driving unit 204 and the warning unit 205 through the main control unit 201, the power supply system 202 is used for supplying power to the safety defense device 100, the main control unit 201, the driving unit 204 and the warning unit 205, the power-off switch 203 is connected between the driving unit 204 and the power supply system 202, when the safety defense device 100 detects an electromagnetic interference signal, the safety defense device 100 sends an electric signal to the main control unit 201 to control the electronic equipment to enter a defense state, wherein the electric signal comprises a control signal and/or a warning signal, the control signal is used for instructing the main control unit 201 to send a power-off signal to the power-off switch 203 to disconnect the connection between the driving unit 204 and the power supply system 202, and the warning signal is used for instructing the main control unit 201 to send an alarm signal to the warning unit 205 to notify a user of the electronic equipment; the system realizes active detection on electromagnetic attack, enables the system to enter a defense state when the intelligent door lock is attacked by the electromagnetic attack, can recover the system function and alarm against illegal attack, and improves the safety of equipment.

Based on fig. 1, fig. 2, the embodiment of the utility model provides an intelligence lock modular diagram and an intelligence lock schematic diagram specifically as shown in fig. 4, fig. 7.

In this disclosed embodiment, intelligence lock is different from traditional lock, can carry out the lock of unblanking through one or more modes such as password, fingerprint, punching the card, bluetooth.

In the embodiment of the present disclosure, fig. 5 provides a schematic block diagram of a specific security defense apparatus 100 for an intelligent door lock. Fig. 6 is a schematic diagram of a specific connection mode of the security defense apparatus 100 of the smart door lock.

The smart door lock includes a smart door lock body 301 and a security defense apparatus 100.

The security defense apparatus 100 includes a fixing plate 104, a touch member 101, a circuit board 102, and a touch chip 103.

The security defense apparatus 100 is disposed at a location that is easily affected by electromagnetic attack, such as a password area, a fingerprint area, an inner panel unlock key/unlock capacitor key area, and the like. As shown in fig. 7, security guards may be provided at portions of the smart door lock both inside and outside the door, and the security guards may share a fixed plate with the smart door lock. In this disclosure, the number of touching pieces in the security defense apparatus can be set as required.

In conclusion, the scheme of the disclosure has the following beneficial effects:

1. the electromagnetic attack is detected in a hidden capacitive touch key mode, so that false triggering in the normal unlocking process of a user is avoided;

2. after electromagnetic attack is detected, active detection and active defense are performed, so that the safety and intelligence of equipment are improved, and a main control and unlocking driving unit is protected;

3. and the user is warned in time, so that the user can master the safety state more timely and comprehensively.

It should be noted that the touch chip in the security defense apparatus 100 or the main control unit in the electronic device may be a chip, a component, or a module, and at least includes a processor or a controller and a memory, where the memory stores a program unit, and the processor executes the program unit stored in the memory to implement the corresponding functions.

The processor may include a kernel, which calls the corresponding program unit from the memory. One or more of the kernels can be set, and the security defense function is realized by adjusting the kernel parameters.

The memory may include volatile memory in a computer readable medium, random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.

The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include forms of volatile memory in a computer readable medium, random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.

Computer-readable media, which include both non-transitory and non-transitory, removable and non-removable media, may implement the information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.

As will be appreciated by one of skill in the art, embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and so forth) having computer-usable program code embodied therein.

The above description is only for the purpose of illustrating the preferred embodiments of the present disclosure and the principles of the applied technology, and is not intended to limit the present disclosure. Various modifications and variations of this disclosure will be apparent to those skilled in the art. The scope of the invention according to the present disclosure is not limited to the embodiments in which the above-described features are combined in particular, and may also be other embodiments in which the above-described features or their equivalents are combined arbitrarily without departing from the scope of the present invention. For example, the above features and the technical features disclosed in the present disclosure (but not limited to) having similar functions are replaced with each other to form the technical solution.

Claims

1. A security defense apparatus, arranged in an electronic device, comprising: the touch piece, the circuit board and the touch chip are arranged on the circuit board;

the touch piece is electrically connected with the circuit board;

the touch chip is electrically connected with the circuit board and is used for controlling the electronic equipment to enter a defense state when an electromagnetic interference signal is detected.

2. The device of claim 1, wherein the touch piece is connected with the touch chip through a bus on the circuit board, and wherein the touch chip sends a control signal to a main control unit of the electronic device based on the touch piece being triggered.

3. The apparatus of claim 1, further comprising: a fixing plate;

4. The apparatus of claim 1, wherein the touch chip is electrically connected with a main control unit in an electronic device,

based on the fact that the touch piece is triggered, the touch chip sends a control signal to a main control unit in the electronic equipment, and the main control unit in the electronic equipment responds to the control signal to control the electronic equipment to enter a defense state.

5. The apparatus of claim 4, wherein in response to the control signal, the master control unit in the electronic device sends a power-off signal to the drive unit in the electronic device to disconnect the drive unit of the electronic device from the power system.

6. The apparatus of claim 4, wherein in response to the control signal, the main control unit in the electronic device sends an alarm signal to an alarm unit in the electronic device to notify a user of the electronic device.

7. The device of any one of claims 1 to 6, wherein the touching member is at least one.

8. The device according to any one of claims 1 to 7,

the touch chip is electrically connected with a timing device in the electronic equipment, and based on a time signal sent by the timing device, the touch chip sends an exit instruction to a main control unit of the electronic equipment after the electronic equipment enters a defense state for a preset time period and/or in response to a recovery instruction, so as to control the electronic equipment to exit the defense state.

9. An electronic device characterized by comprising a security defense apparatus as claimed in any one of claims 1 to 8.

10. The electronic device of claim 9, further comprising: a main control unit, a power supply system, a power-off switch, a driving unit, an alarm unit and a timing device, wherein,

wherein the safety defense device sends a power-off signal to the main control unit, the main control unit disconnects the connection between the driving unit of the electronic equipment and the power system according to the received power-off signal,

the safety defense device sends an alarm signal to the main control unit, and the main control unit sends out an alarm signal according to the received alarm signal so as to inform a user of the electronic equipment;

the timing device is electrically connected with the security defense device, and based on the time signal sent by the timing device, the security defense device sends an exit instruction to the main control unit after the electronic equipment enters the defense state for a preset time period and/or in response to acquiring a recovery instruction, so as to control the electronic equipment to exit the defense state.

11. An intelligent door lock, comprising an intelligent lock body and the device of any one of claims 1 to 8.