CN113806828B - Cover opening protection device and method - Google Patents

Abstract

The embodiment of the invention discloses a cover opening protection device and a method, wherein the device comprises the following components: a metal spring plate and a controller; one end of the metal spring plate is grounded; the other end of the metal elastic sheet is used for being connected with the controller when the cover is not opened, and interrupting the connection with the controller in the cover opening state; the controller is used for generating a first signal when the metal elastic sheet is connected and generating a second signal when the metal elastic sheet is not connected; the first signal is different from the second signal. Through setting up the metal shrapnel in this scheme, combine the controller, utilize uncapping and uncapping to the difference of metal shrapnel pressure for switch between connected state and interrupt state between metal shrapnel and the controller, produce different signals from this, based on the difference of signal, can judge whether uncap, play the technological effect that improves product security and safety in utilization from this.

Description

Cover opening protection device and method

Technical Field

The invention relates to the technical field of chip protection, in particular to an uncovering protection device and method.

Background

Communication equipment, industrial control equipment and the like have higher operation safety requirements. Particularly some communication devices, which bear public communication demands, have high requirements for security, such as data confidentiality, technical confidentiality, etc. Hacking and the like are prohibited from hacking the system by various means, stealing data and breaking communications. Therefore, once the cover is opened illegally, the system is required to be stopped, an alarm can be realized, and the system is locked. Currently, for this need, there are some schemes of:

such as for light intensity detection within an environment. The device is soldered to the circuit board of the base station. When the cover is opened and closed, the ambient light intensity of the sensor changes to a certain extent, so that whether the cover is opened or not can be identified by detecting the change. In addition, hall sensor devices are also based, and a particular hall sensor is a magnetic sensing device. By disposing hall devices on the cover and on the PCB (Printed Circuit Board ) circuit, when the cover is opened, there is a certain change in magnetic induction of a pair of hall devices, and by detecting the change, it is judged that the cover opening behavior exists. A separate detection system with battery operation is implanted in the base station, and a separate MCU (Microcontroller Unit, micro control unit) controller, an infrared receiving tube and a battery are used. The battery supplies power for the MCU controller and the infrared receiving tube. Even in the event of a power outage, the door open information may still be detected. And after the controller is electrified again, reading the cover opening information detected by the MCU to realize cover opening detection.

However, these solutions have some drawbacks: first, the cost is high, and certain electronic device support is needed, and meanwhile, large processing work is needed on software. In the first scheme, the controller needs to have an IIC (Inter-Integrated Circuit, integrated circuit bus) interface to read the sensor data, compare the data changes, and determine whether to open the cover.

Disclosure of Invention

In view of this, the invention provides a cover opening protection device and a method, through which cover opening protection is realized through the metal spring plate and the controller.

Specifically, the present invention proposes the following examples:

the embodiment of the invention provides an uncovering protection device, which comprises: a metal spring plate and a controller; one end of the metal spring plate is grounded; the other end of the metal elastic sheet is used for being connected with the controller when the cover is not opened, and interrupting the connection with the controller in the cover opening state;

the controller is used for generating a first signal when the metal elastic sheet is connected and generating a second signal when the metal elastic sheet is not connected; the first signal is different from the second signal.

In a specific embodiment, the controller includes a connection interface; the connection interface generates a first signal when the metal spring is connected and generates a second signal when the metal spring is not connected.

In a specific embodiment, the connection interface is an IRQ interface.

In a specific embodiment, a connection point between the controller and the metal elastic sheet is also connected with one end of a boost resistor; the other end of the boosting resistor is connected with a system power supply.

In a specific embodiment, the method further comprises: the memory is connected with the controller; the memory is used for storing the second signal.

In a specific embodiment, the first signal is a low level signal and the second signal is a high level signal.

In a specific embodiment, the first signal is a high level signal and the second signal is a low level signal.

The embodiment of the invention also discloses an uncovering protection method which is applied to the uncovering protection device, and comprises the following steps:

if the historical signal generated by the controller is obtained;

if the second signal exists in the history signal, controlling to stop the current preset service;

if the second signal does not exist in the history signal, acquiring a signal currently generated by the controller;

and if the current generated signal is the second signal, controlling to stop the current preset service.

In a specific embodiment, the method further comprises:

if the preset password is obtained, the current preset service is continuously executed.

In a specific embodiment, the method further comprises:

the recorded password input times;

and if the preset password is not obtained within the preset times, alarming.

In this way, the embodiment of the invention provides an uncovering protection device and method, the device comprises: a metal spring plate and a controller; one end of the metal spring plate is grounded; the other end of the metal elastic sheet is used for being connected with the controller when the cover is not opened, and interrupting the connection with the controller in the cover opening state; the controller is used for generating a first signal when the metal elastic sheet is connected and generating a second signal when the metal elastic sheet is not connected; the first signal is different from the second signal. Through setting up the metal shrapnel in this scheme, combine the controller, utilize uncapping and uncapping to the difference of metal shrapnel pressure for switch between connected state and interrupt state between metal shrapnel and the controller, produce different signals from this, based on the difference of signal, can judge whether uncap, play the technological effect that improves product security and safety in utilization from this.

Drawings

In order to more clearly illustrate the technical solutions of the present invention, the drawings that are required for the embodiments will be briefly described, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope of the present invention. Like elements are numbered alike in the various figures.

Fig. 1 is a schematic view of a structural frame of an uncovering protection device according to an embodiment of the present invention;

fig. 2 is a schematic view of another structural frame of an open cover protection device according to an embodiment of the present invention;

fig. 3 is a schematic flow chart of an uncovering protection method according to an embodiment of the present invention;

fig. 4 is another flow chart of an uncovering protection method according to an embodiment of the present invention.

Legend description:

100-device body; 110-a cover; 120-a controller; 130-a connection interface; 140-memory; 150-step-up resistor; 200-metal spring plate.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.

The terms "comprises," "comprising," "including," or any other variation thereof, are intended to cover a specific feature, number, step, operation, element, component, or combination of the foregoing, which may be used in various embodiments of the present invention, and are not intended to first exclude the presence of or increase the likelihood of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing.

Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the invention belong. The terms (such as those defined in commonly used dictionaries) will be interpreted as having a meaning that is the same as the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in connection with the various embodiments of the invention.

Example 1

The embodiment 1 of the invention discloses an uncovering protection device, as shown in fig. 1 or fig. 2, comprising: a metal spring 200 and a controller 120; one end of the metal spring plate 200 is grounded; the other end of the metal spring 200 is used for connecting with the controller 120 when the cover is not opened, and interrupting the connection with the controller 120 when the cover is opened; the controller 120 is configured to generate a first signal when the metal spring 200 is connected, and generate a second signal when the metal spring 200 is not connected; the first signal is different from the second signal.

Specific door protection devices may protect products with covers or covers, such as chips or certain cases.

Specifically, in one embodiment, the device is provided with a carrier, that is, the device body 100, and the device in this embodiment is used for judging whether there is a cover, that is, whether the cover 110 is opened, where the metal elastic sheet 200 may be disposed in the device body 100, and one end of the metal elastic sheet 200 is fixed on the device body 100, and the other end of the metal elastic sheet 200 is grounded;

if the cover 110 is in the closed state, the cover 110 presses the other end of the metal spring 200 to connect with the controller 120 (specifically, the connection interface 130); if the cover 110 is in an open state, the other end of the metal spring 200 will spring up, thereby interrupting the connection with the controller 120; the controller 120 generates a first signal when connected with the metal spring 200; the controller 120 generates a second signal when the metal spring 200 is not connected; the first signal is different from the second signal.

Specifically, as shown in fig. 1 or fig. 2, when the cover 110 is in the closed state, the cover 110 presses the metal spring 200, so that the other end of the metal spring 200 is electrically connected to the controller 120. When the shell cover 110 is opened, the metal spring piece automatically springs open, so that the other end of the metal spring piece 200 is disconnected from the controller 120, and different signals are generated by the connection interface 130 based on the disconnection and connection between the other end of the metal spring piece 200 and the controller 120, so that whether the shell cover 110 is opened or not can be identified.

Specifically, the controller 120 includes a connection interface 130; the connection interface 130 generates a first signal when the metal spring 200 is connected, and generates a second signal when the metal spring 200 is not connected.

Furthermore, in one particular embodiment the connection interface 130 is an IRQ pin.

Specifically, a connection point between the controller 120 and the metal spring 200 is further connected to one end of the boost resistor 150; the other end of the boost resistor 150 is connected to a system power supply, specifically, the system power supply of the device.

In this case, the first signal is a low level signal and the second signal is a high level signal.

In this embodiment, in a specific structure, one end of the metal spring plate 200 is welded to the device body 100, and the other end is naturally sprung, and is pressed to contact with the controller 120, thereby forming a connection path.

The fixed end of the metal spring 200 is grounded, and the other end is pulled up to a 3.3V power supply through a resistor R1 and connected to a connection interface 130 of the controller 120, that is, an IRQ (Interrupt Request ) interface, and the connection interface 130 may be in the form of GPIO (General-purpose input/output).

Therefore, when the cover 110 is opened, the metal spring 200 springs up, and the connection interface 130 of the controller 120, i.e., the IRQ (GPIO) pin is pulled up to 3.3V through the resistor R1, is at a high level.

When the cover 110 is closed, the metal spring 200 is pressed and turned on, and the controller 120 (GPIO) is at a low level.

The controller 120 may thus detect a change in IRQ (GPIO) level for the open cover condition.

The above is a description of one specific embodiment, and in other embodiments, the first signal is a high level signal and the second signal is a low level signal.

Specifically, the step-up resistor 150 may be provided, and the step-down resistor (or pull-down resistor) may be provided, so that the level of the first signal and the second signal may be controlled. For example, the first signal may be a high signal and the second signal may be a low signal.

In a specific embodiment, the apparatus may further include a memory 140, wherein the memory 140 is connected to the controller 120, in order to permanently store the generated signals for subsequent processing; the memory 140 is configured to store the second signal.

The memory 140 is coupled to the controller 120 and stores history information of detected IRQ (GPIO) states.

Example 2

In order to further explain the scheme, embodiment 2 of the present invention also discloses an uncovering protection method, which is applied to the uncovering protection device described in embodiment 1, as shown in fig. 3, and includes the following steps:

step S101, acquiring a history signal generated by the controller;

specifically, the stored history signal may be retrieved from the memory 140, for example.

Step S102, if the second signal exists in the history signal, controlling to stop the current preset service;

if the second signal is present, it indicates that the uncapping phenomenon occurs, in which case the product protected by the uncapping protection device, for example, the chip is in an unsafe state, so that the chip is controlled to enter a password locked state, specifically, after the chip enters the password locked state, the chip is locked, and normal service cannot be executed.

Step S103, if the second signal does not exist in the history signal, acquiring a signal currently generated by the controller;

specifically, since the signal is generated by the connection interface, in this case, the controller may not acquire the signal generated by the current connection interface in time, in this case, it is first determined whether the second signal is historically present, and if not, it is determined whether the second signal is currently generated.

If the uncovering does not occur before, acquiring a current signal so as to judge whether the uncovering state exists currently.

Step S104, if the current generated signal is the second signal, stopping the current preset service.

If the current signal is the second signal, the chip is in the current uncapping state, namely the unsafe state, and the locking chip is controlled to stop the current preset service.

Further, as shown in fig. 4, the method further includes:

step 105, if the preset password is obtained, the current preset service is continuously executed.

Furthermore, to avoid multiple inputs to sleeve the password, the method further comprises:

recording the password input times;

and if the preset password is not obtained within the encountering times, alarming.

Specifically, or limiting the number of times the password is entered, if the number of times exceeds a certain number, an alarm is given, and the specific alarm may be to lock the chip again in other manners, for example, to lock for a certain time, where the password can be entered only after the time.

Specifically, the method further comprises the steps of:

and if the current generated signal is not the second signal, continuing to execute the current preset service.

Specifically, the method is applied to a chip as an example, and after the chip is powered on, the chip first reads IRQ (GPIO) history information stored in the memory 140, and if the history state is at a low level, the program requested to be executed continues to be executed if the open state has not occurred before the description. Next check the current IRQ (GPIO) status, if the current IRQ (GPIO) is high, then indicate that the cover 110 is open, at which point: outputting alarm information; and may write the uncap information to the memory 140, including related information such as the uncap time, for status query. While other related traffic control instructions cease. Enter a password lock state. After entering the password lock state, if a correct password instruction is input, the program then runs, and all service modes are started.

If the current IRQ (GPIO) is low level, then it is indicated that the cover is not opened at this time, and all the services are operated normally. In this embodiment, the controller 120 selects a GPIO pin with an interrupt function (IRQ) for detecting the switch state, so that when the device has normally operated, a cover opening state occurs, and then the interrupt program can be entered at the first time. I.e. enter a password locked state. In the embodiment, only one metal spring piece is additionally used on hardware, so that the cover opening protection function is realized, the controller and the memory of the original control system are fully utilized, the cost is lower, generally 0.1 yuan is required, the functions of cover opening alarming, service locking and the like are realized, the safety of the system is ensured, and illegal tampering is prevented.

In this way, the embodiment of the invention provides an uncovering protection device and method, wherein the device comprises: a metal spring 200 and a controller 120; one end of the metal spring plate 200 is grounded; the other end of the metal spring 200 is used for connecting with the controller 120 when the cover is not opened, and interrupting the connection with the controller 120 when the cover is opened; the controller 120 is configured to generate a first signal when the metal spring 200 is connected, and generate a second signal when the metal spring 200 is not connected; the first signal is different from the second signal. Through setting up metal shrapnel 200 in this scheme, combine controller 120, utilize uncapping and uncapping to the difference of metal shrapnel 200 pressure for switch between connected state and interrupt state between metal shrapnel 200 and controller 120, produce different signals from this, based on the difference of signal, can judge whether uncap, play the technological effect that improves product security and safety in utilization from this.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other manners as well. The apparatus embodiments described above are merely illustrative, for example, of the flow diagrams and block diagrams in the figures, which illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

In addition, functional modules or units in various embodiments of the invention may be integrated together to form a single part, or the modules may exist alone, or two or more modules may be integrated to form a single part.

The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a smart phone, a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory 140 (ROM), a random access Memory 140 (RAM, random Access Memory), a magnetic disk or an optical disk, or other various media capable of storing program codes.

The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention.

Claims (9)

1. An open cover protection device, characterized by comprising: a metal spring plate and a controller; one end of the metal spring plate is grounded; the other end of the metal elastic sheet is used for being connected with the controller when the cover is not opened, and interrupting the connection with the controller in the cover opening state;

the controller is used for generating a first signal when the metal elastic sheet is connected and generating a second signal when the metal elastic sheet is not connected; the first signal is different from the second signal;

the controller comprises a connection interface; the connecting interface is used for generating a first signal when the metal elastic sheet is connected and generating a second signal when the metal elastic sheet is not connected;

if the second signal exists, the uncovering phenomenon occurs, and the password locking state is entered.

2. The apparatus of claim 1, wherein the connection interface is an IRQ interface.

3. The apparatus as recited in claim 1, further comprising: the memory is connected with the controller; the memory is used for storing the second signal.

4. The device of claim 1, wherein a junction between the controller and the metal spring is further connected to one end of a boost resistor; the other end of the boosting resistor is connected with a system power supply.

5. The apparatus of any of claims 1-4, wherein the first signal is a low level signal and the second signal is a high level signal.

6. A device as claimed in any one of claims 1 to 3, wherein the first signal is a high signal and the second signal is a low signal.

7. A door protection method applied to the door protection device according to any one of claims 1 to 6, the method comprising:

if the historical signal generated by the controller is obtained;

if the second signal exists in the history signal, controlling to stop the current preset service;

if the second signal does not exist in the history signal, acquiring a signal currently generated by the controller;

and if the current generated signal is the second signal, controlling to stop the current preset service.

8. The method as recited in claim 7, further comprising:

if the preset password is obtained, the current preset service is continuously executed.

9. The method as recited in claim 7, further comprising:

the recorded password input times;

and if the preset password is not obtained within the preset times, alarming.