CN114124751A - Anti-disassembly detection protection device and method and data exchange equipment - Google Patents
Anti-disassembly detection protection device and method and data exchange equipment Download PDFInfo
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- CN114124751A CN114124751A CN202210090113.XA CN202210090113A CN114124751A CN 114124751 A CN114124751 A CN 114124751A CN 202210090113 A CN202210090113 A CN 202210090113A CN 114124751 A CN114124751 A CN 114124751A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C1/00—Measuring angles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/02—Constructional details
- H04Q1/10—Exchange station construction
Abstract
The invention discloses a disassembly prevention detection protection device and method and data exchange equipment, wherein the disassembly prevention detection protection device is arranged inside a shell of the data exchange equipment and comprises an inclination angle sensor, a micro-processing module and a storage module, wherein: the inclination angle sensor collects acceleration signals and sends the acceleration signals to the micro-processing module; the micro-processing module calculates an angle signal according to the acceleration signal and judges whether the disassembly behavior occurs, and when the disassembly behavior occurs, the micro-processing module sends the acceleration signal, the angle signal and the disassembly behavior information to the storage module; and the storage module records the acceleration signal, the angle information and the disassembly behavior information when the disassembly behavior occurs. The data exchange equipment can be detected when being artificially damaged and cracked so as to improve the safety of the data exchange equipment.
Description
Technical Field
The invention relates to the technical field of network communication, in particular to an anti-disassembly detection protection device and method and data exchange equipment.
Background
In an important data communication system, the secure storage of data is particularly important, and the data exchange device needs to be stable and reliable. In order to prevent bad personnel from being damaged manually or by interfering with communication of data exchange equipment, a common solution at present is to design a trigger switch as a detection module for a protected module of the data exchange equipment, the switch is generally a mechanical or electronic trigger switch, an MCU (micro controller Unit) monitors a detection module signal in real time, when the protected module is damaged, the switch is triggered, and the MCU detects and judges the switch signal to realize detection of the damage behavior.
If the data exchange equipment is damaged and cracked artificially or the communication module is interfered artificially, the invention aims to solve a link of the series of problems.
Therefore, how to detect when the data exchange device is artificially damaged or cracked to improve the security of the data exchange device is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a tamper-proof detection protection device and method and data exchange equipment, which can detect when the data exchange equipment is damaged or cracked manually so as to improve the safety of the data exchange equipment.
The invention provides a disassembly-prevention detection protection device which is arranged in a shell of data exchange equipment and comprises a tilt angle sensor, a micro-processing module and a storage module, wherein:
the inclination angle sensor is used for acquiring an acceleration signal and sending the acceleration signal to the micro-processing module;
the micro-processing module is used for calculating an angle signal according to the acceleration signal, judging whether a disassembly action occurs or not, and sending the acceleration signal, the angle signal and the disassembly action information to the storage module when the disassembly action occurs; specifically, the judgment of whether the disassembly behavior occurs is that at least one plane or shaft angle change occurs within a preset time threshold, and the at least one plane or shaft angle change exceeds a preset angle threshold;
the storage module is used for recording an acceleration signal, angle information and disassembly behavior information when the disassembly behavior occurs;
the three tilt sensors are respectively arranged on three different planes in the shell of the data exchange equipment, and the judgment on whether the disassembly action occurs is specifically that the tilt sensors send a first acceleration signal, a second acceleration signal and a third acceleration signal of the tilt sensors on the three planes to the micro-processing module, the micro-processing module calculates a first angle change value and a first time value corresponding to the first angle change value according to the first acceleration signal, calculates a second angle change value and a second time value corresponding to the second angle change value according to the second acceleration signal, and calculates a third angle change value and a third time value corresponding to the third angle change value according to the third acceleration signal; if the first angle change value is larger than a preset angle threshold value and the first time value is smaller than a preset time threshold value, judging that a disassembly action occurs; if the first angle change value is smaller than the preset angle threshold value or the first time value is larger than the preset time threshold value, judging whether a second angle change value is larger than the preset angle threshold value or not and the second time value is smaller than the preset time threshold value, and if yes, judging that a disassembly action occurs; if the first angle change value is smaller than the preset angle threshold value or the first time value is larger than the preset angle threshold value and the second angle change value is smaller than the preset angle threshold value or the second time value is larger than the preset time threshold value, whether a third angle change value is larger than the preset angle threshold value and the third time value is smaller than the preset time threshold value or not is judged, if yes, the dismounting behavior is judged to occur, otherwise, the dismounting behavior is not caused.
Preferably, the tamper-proof detection protection device further comprises a charging power supply module, and when the external power supply normally supplies power to the data exchange device, the external power supply charges the charging power supply module; when the data exchange equipment is cut off external power supply, the charging power supply module provides power for the tilt angle sensor, the micro-processing module and the storage module.
Preferably, the storage module records the occurrence frequency of the disassembly behavior, the occurrence time of the disassembly behavior, the occurrence duration of the disassembly behavior, an acceleration signal when the disassembly behavior occurs, angle information and disassembly behavior information in real time.
The invention also provides data exchange equipment which comprises the anti-disassembly detection protection device and the anti-disassembly detection protection device, wherein the assembly screws of the shell of the data exchange equipment are designed on a plurality of surfaces, and the surface shell and the bottom shell of the shell are provided with the assembly screws.
Preferably, the data switching device further includes a first power module, a second power module, a main switch board, a standby switch board, a redundancy management module, and a network port switching module: the first power supply module and the second power supply module are respectively connected with the main exchange board, the standby exchange board and the redundancy management module; the redundancy management module comprises a micro control module and a logic device connected with the micro control module through an I/O port, the micro control module is respectively connected with a main exchange board and a standby exchange board and used for receiving self state information provided by the main exchange board and the standby exchange board, the logic device is connected with a network port switching module and used for controlling network port switching, when the main exchange board works normally, the I/O port connected with the logic device of the micro control module outputs high level and is used for controlling the external network port of the network port switching module to be connected with the network port of the main exchange board; when the main exchange board works abnormally, the I/O port of the micro control module connected with the logic device outputs low level for controlling the connection between the external network port of the network port switching module and the network port of the standby exchange board; the main exchange board and the standby exchange board are respectively connected with the network port switching module through network cables; the network port switching module provides a plurality of paths of network interfaces to the outside; the redundancy management module is externally connected with a selector switch and an indicator lamp;
the automatic/manual switch is used for realizing an automatic switching working mode or a manual switching working mode of the data exchange equipment, and when the data exchange equipment is in the automatic switching working mode, the redundancy management module automatically controls the network port switching module to select the normally working network ports of the exchange boards to be connected to the outside according to the state information and the redundancy control strategy of the main exchange board and the standby exchange boards so as to realize high reliability of network connection; when the data exchange equipment is in a manual switching working mode, the data exchange equipment is mainly used for respectively configuring and testing a main exchange board and a standby exchange board when leaving a factory and can manually realize switching of the exchange boards when an MCU in a redundancy management module fails; the work selection switch is used for controlling an external network port of the network port switching module to be connected to a network port of the main exchange board or the standby exchange board;
the logic device outputs a selection signal for controlling the network port switching based on an automatic or manual mode through an automatic/manual switch: when the logic device outputs a selection signal based on an automatic mode, the micro control module automatically controls an external network port of the network port switching module to be connected to a normally working main exchange board or a normally working standby exchange board according to the working states of the main exchange board and the standby exchange board; when the logic device outputs the selection signal based on a manual mode, the external network port of the network port switching module is manually controlled to be connected to the network port of the main exchange board or the standby exchange board through the working selection switch, so that manual selection control is realized.
Preferably, the network port switching module controls the external network port to be connected with the network port of the main exchange board or the network port of the standby exchange board according to a selection signal output by the logic device, wherein when the selection signal is at a high level, the external network port is connected with the network port of the main exchange board; when the selection signal is low level, the external network port is connected with the network port of the standby exchange board.
Preferably, the indicator lamps comprise a main exchange plate state indicator lamp, a standby exchange plate state indicator lamp, an automatic switching indicator lamp and a manual switching indicator lamp which are arranged in parallel, and when the automatic/manual switch selects an automatic working mode, the automatic switching indicator lamp is turned on; when the automatic/manual switch selects a manual working mode, the manual switching indicator light is turned on; when the external network port is controlled to be connected with the main exchange board, the main exchange board status indicator lamp; when the external network port is controlled to be connected with the standby exchange board, the standby exchange board status indicator lamp.
Preferably, the main exchange board and/or the standby exchange board output status information thereof to the redundancy management module through a serial port.
The invention also provides a tamper detection protection method, based on the tamper detection protection device, the method comprises the following steps:
step S100: the inclination angle sensor collects an acceleration signal and sends the acceleration signal to the micro-processing module; the three tilt angle sensors are respectively arranged on three different planes in the shell of the data exchange equipment, and the tilt angle sensors send a first acceleration signal, a second acceleration signal and a third acceleration signal of the tilt angle sensors on the three planes to the micro-processing module;
step S200: the micro-processing module calculates an angle signal according to the acceleration signal and judges whether the disassembly behavior occurs, and when the disassembly behavior occurs, the micro-processing module sends the acceleration signal, the angle signal and the disassembly behavior information to the storage module; specifically, the judgment of whether the disassembly behavior occurs is that at least one plane or shaft angle change occurs within a preset time threshold, and the at least one plane or shaft angle change exceeds a preset angle threshold; the judging whether the disassembly behavior occurs is specifically that the micro-processing module calculates a first angle change value and a first time value corresponding to the first angle change value according to the first acceleration signal, calculates a second angle change value and a second time value corresponding to the second angle change value according to the second acceleration signal, and calculates a third angle change value and a third time value corresponding to the third angle change value according to the third acceleration signal; if the first angle change value is larger than a preset angle threshold value and the first time value is smaller than a preset time threshold value, judging that a disassembly action occurs; if the first angle change value is smaller than the preset angle threshold value or the first time value is larger than the preset time threshold value, judging whether a second angle change value is larger than the preset angle threshold value or not and the second time value is smaller than the preset time threshold value, and if yes, judging that a disassembly action occurs; if the first angle change value is smaller than the preset angle threshold value or the first time value is larger than the preset time threshold value and the second angle change value is smaller than the preset angle threshold value or the second time value is larger than the preset time threshold value, judging whether a third angle change value is larger than the preset angle threshold value and the third time value is smaller than the preset time threshold value or not, if yes, judging that a disassembly action occurs, otherwise, judging that no disassembly action occurs;
step S300: and the storage module records the acceleration signal, the angle information and the disassembly behavior information when the disassembly behavior occurs.
The characteristic that the data exchange equipment can generate angle overturning and angle change in different degrees when the data exchange equipment is detached is utilized, the tilt angle sensor is arranged in the protected object, and the detection of various destructive behaviors is realized through the sensing of the tilt angle sensor on the angle change. Therefore, the data exchange equipment is detected when being artificially damaged and cracked, and the safety of the data exchange equipment is improved.
Drawings
FIG. 1 is a block diagram of a tamper-proof detection protection device according to the present invention;
FIG. 2 is a schematic view of the installation of the tamper-proof detection protection device in the data exchange equipment in the XY plane;
fig. 3 is a schematic diagram of a data switching apparatus provided in the present invention;
fig. 4 is a block diagram of a data switching device according to the present invention;
fig. 5 is a flowchart of a tamper detection protection method according to the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention is further described in detail below with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a block diagram of a first tamper-proof detection protection device provided by the present invention.
The invention provides a tamper detection protection device, wherein the tamper detection protection device 100 is arranged inside a shell of data exchange equipment, and comprises an inclination angle sensor 101, a microprocessor module 102 and a storage module 103, wherein:
the tilt sensor 101 is used for acquiring an acceleration signal and sending the acceleration signal to the micro-processing module 102;
the micro-processing module 102 is configured to calculate an angle signal according to the acceleration signal, determine whether a disassembly behavior occurs, and send the acceleration signal, the angle signal, and the disassembly behavior information to the storage module 103 when the disassembly behavior occurs; specifically, the judgment of whether the disassembly behavior occurs is that at least one plane or shaft angle change occurs within a preset time threshold, and the at least one plane or shaft angle change exceeds a preset angle threshold;
the storage module 103 is configured to record an acceleration signal, angle information, and disassembly behavior information when a disassembly behavior occurs.
Various disassembly behaviors of the data exchange device are often accompanied by behaviors of turning over or moving the data exchange device, and at the moment, the data exchange device can generate angle turning and angle change of different degrees. The anti-disassembly detection protection device at least comprises an inclination angle sensor, and when the data exchange equipment is disassembled, the inclination angle sensor arranged in the anti-disassembly detection protection device in the shell of the data exchange equipment collects acceleration signals and sends the acceleration signals to the micro-processing module; the micro-processing module calculates an angle signal according to the acceleration signal and sends the acceleration signal, the angle signal and the disassembly behavior information to the storage module; and the storage module records the acceleration signal, the angle information and the disassembly behavior information when the disassembly behavior occurs.
Specifically, the judgment of whether the disassembly behavior occurs is that at least one plane or shaft angle change occurs within a preset time threshold, and the at least one plane or shaft angle change exceeds a preset angle threshold; the preset time threshold and the preset angle threshold may be set empirically.
The characteristic that the data exchange equipment can generate angle overturning and angle change in different degrees when the data exchange equipment is detached is utilized, the tilt angle sensor is arranged in the protected object, and the detection of various destructive behaviors is realized through the sensing of the tilt angle sensor on the angle change. Therefore, the data exchange equipment is detected when being artificially damaged and cracked, and the safety of the data exchange equipment is improved.
Referring to fig. 2, fig. 2 is a schematic view of the installation of the tamper-proof detection protection device in the data exchange equipment in the XY plane.
Further, the three tilt sensors 101 are respectively disposed on three different planes inside the housing of the data exchange device, and the determining whether the disassembly action occurs is specifically that the tilt sensors send a first acceleration signal, a second acceleration signal, and a third acceleration signal of the tilt sensors on the three planes to the microprocessor module, and the microprocessor module calculates a first angle change value and a first time value corresponding to the first angle change value according to the first acceleration signal, calculates a second angle change value and a second time value corresponding to the second angle change value according to the second acceleration signal, and calculates a third angle change value and a third time value corresponding to the third angle change value according to the third acceleration signal; if the first angle change value is larger than a preset angle threshold value and the first time value is smaller than a preset time threshold value, judging that a disassembly action occurs; if the first angle change value is smaller than the preset angle threshold value or the first time value is larger than the preset time threshold value, judging whether a second angle change value is larger than the preset angle threshold value or not and the second time value is smaller than the preset time threshold value, and if yes, judging that a disassembly action occurs; if the first angle change value is smaller than the preset angle threshold value or the first time value is larger than the preset angle threshold value and the second angle change value is smaller than the preset angle threshold value or the second time value is larger than the preset time threshold value, whether a third angle change value is larger than the preset angle threshold value and the third time value is smaller than the preset time threshold value or not is judged, if yes, the dismounting behavior is judged to occur, otherwise, the dismounting behavior is not caused.
As shown in fig. 2, fig. 2 shows an example in which one surface of the housing of the data exchange device is an XY plane, and the data exchange device maintains a position state shown by a dotted line before being broken by manual detachment. The signal collected by the inclination angle sensor in the anti-dismantling detection protection device isThe data exchange equipment has no angle change signal in short time in the state of static or working. When the manual disassembly damage action occurs, the data exchange device is turned over and changed in angle, as shown in fig. 2, from the position state shown by the dotted line to the position state shown by the solid line. At this time, the inclination angle sensor in the anti-disassembly detection protection device makes an angle with the main body of the data exchange equipment on the plane shown in FIG. 2
A change in (c). The inclination angle sensor converts a first acceleration signal of the inclination angle sensor on the XY plane
Sending the acceleration signal to a micro-processing module, and the micro-processing module is used for sending the acceleration signal to the micro-processing module according to the first acceleration signal
Calculating a first angle change value
And a first time value corresponding to the first angle variation value
(ii) a If the first angle changes value
Greater than a predetermined angle threshold
And a first time value
Less than a predetermined time threshold
If yes, judging that the disassembly action occurs; if the first angle changes value
Less than a predetermined angle threshold
Or a first time value
Greater than a predetermined time threshold
Then, the other planes such as the YZ plane and the XZ plane are further determined.
The tilt sensor uses first acceleration signals of the tilt sensor on three planes
The second acceleration signal
And a third acceleration signal
Sending the acceleration signal to a micro-processing module, and the micro-processing module is used for sending the acceleration signal to the micro-processing module according to the first acceleration signal
Calculating a first angle change value
And a first angle change value
Corresponding first time value
According to the second acceleration signal
Calculating a second angle change value
And a second angle change value
Corresponding second time value
According to the third acceleration signal
Calculating a third angle change value
And a third angle change value
Corresponding third time value
。
If the first angle changes value
Greater than a predetermined angle threshold
And a first time value
Less than a predetermined time threshold
And judging that the disassembly damage action occurs. If the first angle changes value
Less than a predetermined angle threshold
Or a first time value
Greater than a predetermined time threshold
No disassembly failure behavior was found in the XY plane.
Further, it is determined whether or not there is a second angle change value
Greater than a predetermined angle threshold
And a second time value
Less than a predetermined time threshold
If the condition is met, judging that a disassembly action occurs; second angle change value
Less than a predetermined angle threshold
Or a second time value
Greater than a predetermined time threshold
No disassembly failure behavior was found in the YZ plane.
Further, it is determined whether or not a third angle change value exists
Greater than a predetermined angle threshold
And a third time value
Less than a predetermined time threshold
If the condition is met, the disassembly damage behavior is judged to occur, otherwise, the disassembly damage behavior is found on all three surfaces, and the disassembly damage behavior to the digital exchange equipment is not found.
The tilt angle sensor has the characteristics of high precision, small volume and low power consumption, has stronger anti-interference capability, is not influenced by a metal shell of data exchange equipment, and can realize multi-axis multi-direction angle detection. The plurality of inclination angle sensors are arranged on different planes of the digital switching equipment, so that the detection of the disassembly damage behavior can be improved, and the sensitivity and the accuracy of the detection are further improved.
Referring to fig. 1, the further tamper-proof detection protection device further includes a charging power module 104, when the external power 200 normally supplies power to the data exchange device, the external power 200 charges the charging power module 104; when the data exchange device is cut off from external power supply, the charging power supply module 104 supplies power to the tilt sensor 101, the micro-processing module 102 and the storage module 103.
When the external power supply 200 normally supplies power to the data exchange device, the external power supply 200 charges the charging power supply module 104; when the data exchange device is powered off, such as when the main power terminal is manually unplugged, the charging power module 104 provides power to the tilt sensor 101, the microprocessor module 102 and the memory module 103. At the moment, if further destructive behavior occurs, the anti-dismantling detection protection device can still realize normal detection. The charging power module 104 may also provide power to the data exchange device for storage of important data and transmission of important information in the event of a sudden power failure.
When the data exchange device is not abnormal, that is, at the non-sampling time, the tilt sensor, the micro-processing module and the storage module 103 enter a power saving mode, so as to achieve the purpose of low power consumption. And the low-power-consumption design is adopted, so that long-time continuous detection under the condition of power failure can be realized.
In a further aspect, the storage module 103 records, in real time, the number of times of occurrence of the detachment behavior, the time of occurrence of the detachment behavior, the duration of occurrence of the detachment behavior, an acceleration signal when the detachment behavior occurs, angle information, and detachment behavior information.
When no destructive behavior occurs, most of the signals detected by the tilt angle sensor are irregular vibration acceleration signals, and the signals when the disassembly destructive behavior occurs are angle changes in a short time, which are obviously different from each other. The invention adopts the storage module to record the occurrence frequency of the disassembly behavior, the occurrence time of the disassembly behavior, the occurrence duration time of the disassembly behavior, the acceleration signal when the disassembly behavior occurs, the angle information and the disassembly behavior information as reliable evidence for storage. Meanwhile, the stored information can be sent to the remote terminal through the data exchange equipment, so that real-time monitoring and early warning are realized, and the safety of the data exchange equipment is further improved.
Referring to fig. 3, fig. 3 is a schematic diagram of a data switching device provided in the present invention.
The invention also provides a data exchange device which is provided with the anti-disassembly detection protection device 100, wherein the assembly screws of the shell 1 of the data exchange device are designed on a plurality of surfaces, and the surface shell and the bottom shell of the shell 1 are provided with the assembly screws.
In order to improve the accuracy of detecting the opening behavior of the shell, the shell is provided with screws to design the data exchange equipment shell 1 on a plurality of surfaces instead of a single surface. The face shell screws 3 are face shell assembly screws, screws must be screwed from the face shell during production and assembly, and the bottom shell screws 4 are bottom shell assembly screws and must be mounted from the bottom shell. In the same way, the screw 3 of the face shell must be screwed from the face shell and the screw 4 of the bottom shell must be screwed from the bottom shell when the cover is opened. If the shell is to be opened, the data exchange equipment is required to perform the turning action after the front shell screw 3 is taken down and the bottom shell screw 4 is screwed. If the detection device is damaged by manual disassembly, an inclination angle sensor in the anti-disassembly detection protection device can acquire an acceleration signal brought by overturning.
Further, in order to prevent the external power supply terminal 2 from being pulled out by a person, the external power supply terminal may be installed with its one surface facing inward when the data exchange apparatus is installed and fixed as a whole. If the installation can be with the one side of having main power supply terminal and pasting the wall installation, when the destroys the in-process, must overturn data exchange equipment, just can reach the purpose of pulling out external power supply terminal 2. At this time, the inclination angle sensor in the anti-disassembly detection protection device generates inevitable angle change, and the change is large angle change. The probability and the amplitude of the angle change are increased, and the accuracy and the reliability of detection can be improved.
In a further scheme, the core device is placed on the bottom surface of the mainboard for the core device on the mainboard of the data exchange equipment, and a destructor needs to turn over the mainboard when pulling out the core device, so that the change of large-angle turning is accompanied.
By combining the installation position of the data exchange equipment and the design of the shell assembly method, the change probability and the change amplitude of the angle of the data exchange equipment are increased when a destructive action occurs, so that the accuracy and the reliability of detection are further improved.
Referring to fig. 4, fig. 4 is a block diagram of a data switching device according to the present invention.
The invention provides a data exchange device, which comprises a tamper detection protection device 100, a first power module 310, a second power module 320, a main exchange board 410, a standby exchange board 420, a redundancy management module 500 and a network port switching module 600: the first power module 310 and the second power module 320 are respectively connected with the main switch board 410, the standby switch board 420 and the redundancy management module 500; the redundancy management module 500 includes a micro control module and a logic device connected with the micro control module through an I/O port, the micro control module is respectively connected with the main switch board 410 and the standby switch board 420, and is used for receiving self state information provided by the main switch board 410 and the standby switch board 420, the logic device is connected with the network port switching module 600 and is used for controlling network port switching, when the main switch board 410 works normally, the I/O port connected with the logic device of the micro control module outputs high level and is used for controlling the external network port of the network port switching module 600 to be connected with the network port 410 of the main switch board; when the main switch board 410 works abnormally, the I/O port of the micro control module connected with the logic device outputs a low level for controlling the connection between the external network port of the network port switching module 600 and the network port of the standby switch board 420; the main exchange board 410 and the standby exchange board 420 are respectively connected with the network port switching module 600 through network cables; the network port switching module 600 provides a plurality of network interfaces to the outside; the redundancy management module 500 is externally connected with a selector switch and an indicator light;
the change-over switch comprises an automatic/manual switch and a work selection switch which are arranged in parallel, the automatic/manual switch is used for realizing an automatic work switching mode or a manual work switching mode of the data exchange equipment, when the data exchange equipment is in the automatic work switching mode, the redundancy management module 500 automatically controls the network port change-over module 600 to select a normally working exchange board network port to be connected to the outside according to the state information and the redundancy control strategy of the main exchange board 410 and the standby exchange board 420, so that the high reliability of network connection is realized; when the data exchange device is in a manual switching working mode, the data exchange device is mainly used for respectively configuring and testing a main exchange board and a standby exchange board when leaving a factory, and when a micro control module in the redundancy management module 500 fails, the exchange boards can be manually switched; the working selection switch is used for controlling an external network port of the network port switching module to be connected to a network port of the main exchange board 410 or the standby exchange board 420;
the logic device outputs a selection signal for controlling the network port switching based on an automatic or manual mode through an automatic/manual switch: when the logic device outputs the selection signal based on an automatic mode, the micro control module automatically controls the external network port of the network port switching module 600 to be accessed to the normally working main switch board 410 or the standby switch board 420 according to the working states of the main switch board 410 and the standby switch board 420; when the logic device outputs the selection signal based on a manual mode, the external network port of the network port switching module 600 is manually controlled to access to the network port of the main switching board 410 or the standby switching board 420 through the working selection switch, so as to realize manual selection control.
The network port switching module 600 controls the connection between the external network port and the network port of the main switch board or the network port of the standby switch board according to the selection signal output by the logic device, wherein when the selection signal is at a high level, the external network port is connected with the network port of the main switch board; when the selection signal is low level, the external network port is connected with the network port of the standby exchange board.
The indicating lamps comprise a main exchange board state indicating lamp, a standby exchange board state indicating lamp, an automatic switching indicating lamp and a manual switching indicating lamp which are arranged in parallel, and when the automatic/manual switch selects an automatic working mode, the automatic switching indicating lamp is turned on; when the automatic/manual switch selects a manual working mode, the manual switching indicator light is turned on; when the external network port is controlled to be connected with the main exchange board, the main exchange board status indicator lamp; when the external network port is controlled to be connected with the standby exchange board, the standby exchange board status indicator lamp.
The main switch board 410 and/or the standby switch board 420 output status information thereof to the redundancy management module 500 through a serial port.
The external power supply 200 supplies power to the data exchange device.
The main exchange board and the standby exchange board send the self-checking state information to the redundancy management module at the same time, when the main exchange board fails, the redundancy management module controls the network port switching module to switch and connect the external network interface to the slave exchange board, and the redundancy switching of the exchange boards is realized.
Referring to fig. 5, fig. 5 is a flowchart of a tamper detection protection method according to the present invention.
The invention also provides a tamper detection protection method, based on the tamper detection protection device, the method comprises the following steps:
step S100: the inclination angle sensor collects an acceleration signal and sends the acceleration signal to the micro-processing module;
step S200: the micro-processing module calculates an angle signal according to the acceleration signal and judges whether the disassembly behavior occurs, and when the disassembly behavior occurs, the micro-processing module sends the acceleration signal, the angle signal and the disassembly behavior information to the storage module; specifically, the judgment of whether the disassembly behavior occurs is that at least one plane or shaft angle change occurs within a preset time threshold, and the at least one plane or shaft angle change exceeds a preset angle threshold;
step S300: and the storage module records the acceleration signal, the angle information and the disassembly behavior information when the disassembly behavior occurs.
Various disassembly behaviors of the data exchange device are often accompanied by behaviors of turning over or moving the data exchange device, and at the moment, the data exchange device can generate angle turning and angle change of different degrees. The anti-disassembly detection protection device at least comprises an inclination angle sensor, and when the data exchange equipment is disassembled, the inclination angle sensor arranged in the anti-disassembly detection protection device in the shell of the data exchange equipment collects acceleration signals and sends the acceleration signals to the micro-processing module; the micro-processing module calculates an angle signal according to the acceleration signal and sends the acceleration signal, the angle signal and the disassembly behavior information to the storage module; and the storage module records the acceleration signal, the angle information and the disassembly behavior information when the disassembly behavior occurs.
Specifically, the judgment of whether the disassembly behavior occurs is that at least one plane or shaft angle change occurs within a preset time threshold, and the at least one plane or shaft angle change exceeds a preset angle threshold; the preset time threshold and the preset angle threshold may be set empirically.
The characteristic that the data exchange equipment can generate angle overturning and angle change in different degrees when the data exchange equipment is detached is utilized, the tilt angle sensor is arranged in the protected object, and the detection of various destructive behaviors is realized through the sensing of the tilt angle sensor on the angle change. Therefore, the data exchange equipment is detected when being artificially damaged and cracked, and the safety of the data exchange equipment is improved.
The first acceleration signal, the second acceleration signal and the third acceleration signal of the tilt sensors on the three planes are sent to the micro-processing module, the micro-processing module calculates a first angle change value and a first time value corresponding to the first angle change value according to the first acceleration signal, calculates a second angle change value and a second time value corresponding to the second angle change value according to the second acceleration signal, and calculates a third angle change value and a third time value corresponding to the third angle change value according to the third acceleration signal; if the first angle change value is larger than a preset angle threshold value and the first time value is smaller than a preset time threshold value, judging that a disassembly action occurs; if the first angle change value is smaller than the preset angle threshold value or the first time value is larger than the preset time threshold value, judging whether a second angle change value is larger than the preset angle threshold value or not and the second time value is smaller than the preset time threshold value, and if yes, judging that a disassembly action occurs; if the first angle change value is smaller than the preset angle threshold value or the first time value is larger than the preset angle threshold value and the second angle change value is smaller than the preset angle threshold value or the second time value is larger than the preset time threshold value, whether a third angle change value is larger than the preset angle threshold value and the third time value is smaller than the preset time threshold value or not is judged, if yes, the dismounting behavior is judged to occur, otherwise, the dismounting behavior is not caused.
The plurality of inclination angle sensors are arranged on different planes of the digital switching equipment, so that the detection of the disassembly damage behavior can be improved, and the sensitivity and the accuracy of the detection are further improved.
The anti-tamper detection protection device and method and the data exchange device provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (9)
1. The utility model provides a prevent tearing open and detect protection device which characterized in that prevents tearing open and detect protection device and set up inside data exchange equipment's shell, including inclination sensor, microprocessor module and storage module, wherein:
the inclination angle sensor is used for acquiring an acceleration signal and sending the acceleration signal to the micro-processing module;
the micro-processing module is used for calculating an angle signal according to the acceleration signal, judging whether a disassembly action occurs or not, and sending the acceleration signal, the angle signal and the disassembly action information to the storage module when the disassembly action occurs; specifically, the judgment of whether the disassembly behavior occurs is that at least one plane or shaft angle change occurs within a preset time threshold, and the at least one plane or shaft angle change exceeds a preset angle threshold;
the storage module is used for recording an acceleration signal, angle information and disassembly behavior information when the disassembly behavior occurs;
the three tilt sensors are respectively arranged on three different planes in the shell of the data exchange equipment, and the judgment on whether the disassembly action occurs is specifically that the tilt sensors send a first acceleration signal, a second acceleration signal and a third acceleration signal of the tilt sensors on the three planes to the micro-processing module, the micro-processing module calculates a first angle change value and a first time value corresponding to the first angle change value according to the first acceleration signal, calculates a second angle change value and a second time value corresponding to the second angle change value according to the second acceleration signal, and calculates a third angle change value and a third time value corresponding to the third angle change value according to the third acceleration signal; if the first angle change value is larger than a preset angle threshold value and the first time value is smaller than a preset time threshold value, judging that a disassembly action occurs; if the first angle change value is smaller than the preset angle threshold value or the first time value is larger than the preset time threshold value, judging whether a second angle change value is larger than the preset angle threshold value or not and the second time value is smaller than the preset time threshold value, and if yes, judging that a disassembly action occurs; if the first angle change value is smaller than the preset angle threshold value or the first time value is larger than the preset angle threshold value and the second angle change value is smaller than the preset angle threshold value or the second time value is larger than the preset time threshold value, whether a third angle change value is larger than the preset angle threshold value and the third time value is smaller than the preset time threshold value or not is judged, if yes, the dismounting behavior is judged to occur, otherwise, the dismounting behavior is not caused.
2. The tamper-proof detection protection device according to claim 1, further comprising a charging power supply module, wherein when the external power supply normally supplies power to the data exchange equipment, the external power supply charges the charging power supply module; when the data exchange equipment is cut off external power supply, the charging power supply module provides power for the tilt angle sensor, the micro-processing module and the storage module.
3. The tamper-proof detection protection device according to claim 2, wherein the storage module records, in real time, the number of times of occurrence of the detachment behavior, the time of occurrence of the detachment behavior, the duration of occurrence of the detachment behavior, an acceleration signal when the detachment behavior occurs, angle information, and detachment behavior information.
4. A data exchange device comprising the tamper-evident protection device of any one of claims 1 to 3, wherein the assembly screws of the housing of the data exchange device are designed on a plurality of sides, wherein the assembly screws are provided on the front and bottom shells of the housing.
5. The data switching device of claim 4, further comprising a first power module, a second power module, a main switch board, a standby switch board, a redundancy management module, and a network port switching module: the first power supply module and the second power supply module are respectively connected with the main exchange board, the standby exchange board and the redundancy management module; the redundancy management module comprises a micro control module and a logic device connected with the micro control module through an I/O port, the micro control module is respectively connected with a main exchange board and a standby exchange board and used for receiving self state information provided by the main exchange board and the standby exchange board, the logic device is connected with a network port switching module and used for controlling network port switching, when the main exchange board works normally, the I/O port connected with the logic device of the micro control module outputs high level and is used for controlling the external network port of the network port switching module to be connected with the network port of the main exchange board; when the main exchange board works abnormally, the I/O port of the micro control module connected with the logic device outputs low level for controlling the connection between the external network port of the network port switching module and the network port of the standby exchange board; the main exchange board and the standby exchange board are respectively connected with the network port switching module through network cables; the network port switching module provides a plurality of paths of network interfaces to the outside; the redundancy management module is externally connected with a selector switch and an indicator lamp;
the automatic/manual switch is used for realizing an automatic switching working mode or a manual switching working mode of the data exchange equipment, and when the data exchange equipment is in the automatic switching working mode, the redundancy management module automatically controls the network port switching module to select the normally working network ports of the exchange boards to be connected to the outside according to the state information and the redundancy control strategy of the main exchange board and the standby exchange boards so as to realize high reliability of network connection; when the data exchange equipment is in a manual switching working mode, the data exchange equipment is mainly used for respectively configuring and testing a main exchange board and a standby exchange board when leaving a factory and can manually realize switching of the exchange boards when an MCU in a redundancy management module fails; the work selection switch is used for controlling an external network port of the network port switching module to be connected to a network port of the main exchange board or the standby exchange board;
the logic device outputs a selection signal for controlling the network port switching based on an automatic or manual mode through an automatic/manual switch: when the logic device outputs a selection signal based on an automatic mode, the micro control module automatically controls an external network port of the network port switching module to be connected to a normally working main exchange board or a normally working standby exchange board according to the working states of the main exchange board and the standby exchange board; when the logic device outputs the selection signal based on a manual mode, the external network port of the network port switching module is manually controlled to be connected to the network port of the main exchange board or the standby exchange board through the working selection switch, so that manual selection control is realized.
6. The data switching device according to claim 5, wherein the network port switching module controls the external network port to connect with the network port of the main switch board or the network port of the standby switch board according to a selection signal output by the logic device, wherein the external network port is connected with the network port of the main switch board when the selection signal is at a high level; when the selection signal is low level, the external network port is connected with the network port of the standby exchange board.
7. The data exchange device of claim 6, wherein the indicator lights comprise a main exchange board status indicator light, a standby exchange board status indicator light, an automatic switching indicator light and a manual switching indicator light which are arranged in parallel, and when the automatic/manual switch selects the automatic operation mode, the automatic switching indicator light is turned on; when the automatic/manual switch selects a manual working mode, the manual switching indicator light is turned on; when the external network port is controlled to be connected with the main exchange board, the main exchange board status indicator lamp; when the external network port is controlled to be connected with the standby exchange board, the standby exchange board status indicator lamp.
8. The data exchange device of any one of claims 5 to 7, wherein the main exchange board and/or the standby exchange board outputs the status information thereof to the redundancy management module through a serial port.
9. A tamper-proof detection protection method, based on the tamper-proof detection protection device of any one of claims 1 to 3, the method comprising the steps of:
step S100: the inclination angle sensor collects an acceleration signal and sends the acceleration signal to the micro-processing module; the three tilt angle sensors are respectively arranged on three different planes in the shell of the data exchange equipment, and the tilt angle sensors send a first acceleration signal, a second acceleration signal and a third acceleration signal of the tilt angle sensors on the three planes to the micro-processing module;
step S200: the micro-processing module calculates an angle signal according to the acceleration signal and judges whether the disassembly behavior occurs, and when the disassembly behavior occurs, the micro-processing module sends the acceleration signal, the angle signal and the disassembly behavior information to the storage module; specifically, the judgment of whether the disassembly behavior occurs is that at least one plane or shaft angle change occurs within a preset time threshold, and the at least one plane or shaft angle change exceeds a preset angle threshold; the judging whether the disassembly behavior occurs is specifically that the micro-processing module calculates a first angle change value and a first time value corresponding to the first angle change value according to the first acceleration signal, calculates a second angle change value and a second time value corresponding to the second angle change value according to the second acceleration signal, and calculates a third angle change value and a third time value corresponding to the third angle change value according to the third acceleration signal; if the first angle change value is larger than a preset angle threshold value and the first time value is smaller than a preset time threshold value, judging that a disassembly action occurs; if the first angle change value is smaller than the preset angle threshold value or the first time value is larger than the preset time threshold value, judging whether a second angle change value is larger than the preset angle threshold value or not and the second time value is smaller than the preset time threshold value, and if yes, judging that a disassembly action occurs; if the first angle change value is smaller than the preset angle threshold value or the first time value is larger than the preset time threshold value and the second angle change value is smaller than the preset angle threshold value or the second time value is larger than the preset time threshold value, judging whether a third angle change value is larger than the preset angle threshold value and the third time value is smaller than the preset time threshold value or not, if yes, judging that a disassembly action occurs, otherwise, judging that no disassembly action occurs;
step S300: and the storage module records the acceleration signal, the angle information and the disassembly behavior information when the disassembly behavior occurs.
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