CN102360411A - Uncovering locking method and device and communication device - Google Patents
Uncovering locking method and device and communication device Download PDFInfo
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- CN102360411A CN102360411A CN2011103147803A CN201110314780A CN102360411A CN 102360411 A CN102360411 A CN 102360411A CN 2011103147803 A CN2011103147803 A CN 2011103147803A CN 201110314780 A CN201110314780 A CN 201110314780A CN 102360411 A CN102360411 A CN 102360411A
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- 238000004891 communication Methods 0.000 title claims abstract description 130
- 238000000034 method Methods 0.000 title claims abstract description 36
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 106
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 106
- 230000003068 static effect Effects 0.000 claims abstract description 12
- 238000012795 verification Methods 0.000 claims description 7
- 210000000352 storage cell Anatomy 0.000 abstract 8
- 230000005611 electricity Effects 0.000 abstract 3
- 238000010586 diagram Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 8
- 238000001514 detection method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/78—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data
- G06F21/79—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data in semiconductor storage media, e.g. directly-addressable memories
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/2143—Clearing memory, e.g. to prevent the data from being stolen
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The invention provides an uncovering locking method and device and a communication device. The communication device comprises a microswitch, a lithium battery, a storage cell and a micro control unit, wherein the storage cell is used for storing enciphered data of the communication device; the lithium battery is used for supplying electricity to the storage cell; the microswitch is used for switching off a link between the lithium battery and the storage cell for interrupting the lithium battery to supply electricity to the storage cell when detecting that a cover of the communication device is opened, thus the enciphered data of the storage cell is lost; and the micro control unit is used for locking the communication device when detecting that the enciphered data of the storage cell is lost. By using the characteristic of power failure data loss of the storage cell, after the communication device is uncovered, the lithium battery is controlled to be switched off for supplying electricity to an SARM (Static Random Access Memory), and enciphered data inside the SRAM is lost, so that an MCU (Microprogrammed Control Unit) can not read the enciphered data in the SRAM, thus the communication device is locked.
Description
Technical Field
The invention relates to the technical field of engineering machinery manufacturing, in particular to a cover opening locking method and device and communication equipment.
Background
Along with the fact that the competition of the domestic engineering machinery industry is intensified day by day, and the price of the engineering machinery is high, a user can purchase the mechanical product only by prepaying a certain fund, in the subsequent use process, when the violation conditions that the user overdue and does not pay money occur, enterprises need to remotely lock the sold mechanical product, the remote locking is realized by interacting data with electronic communication equipment in the mechanical product, and some users can artificially modify communication equipment in order to use the mechanical product without authorization.
In order to protect communication equipment in a produced product from being manually disassembled and modified, an uncovering detection module is additionally arranged in the communication equipment, so that the product is automatically locked after the communication equipment is disassembled; because the detection circuit in the communication equipment needs to be powered, the product also needs to realize the function of manual uncovering locking under the condition that no power is supplied externally.
At present, the common solutions are: the MCU monitors signals of the detection unit in real time, and after a product cover is opened, the MCU receives the signals and executes instructions to realize the automatic locking function of the opened product.
In the research and practice process of the prior art, the inventor of the invention finds that in the existing mode of realizing cover opening locking, a single micro control unit MCU needs to be added on a circuit board, so that more circuit boards are occupied, the cost is increased, and a high-power lithium battery is needed to supply power for the MCU; and circuit board and lithium cell all must encapsulate inside the MCU, occupy a large amount of inner spaces. Meanwhile, the MCU needs to consume more energy to maintain an operating state or a low power consumption state.
Disclosure of Invention
The invention provides a cover opening locking method, a cover opening locking device and communication equipment, and aims to solve the technical problem of product cover opening locking.
To solve the foregoing technical problem, an embodiment of the present invention provides a communication device, where the communication device includes: a micro switch, a lithium battery, a storage unit and a micro control unit, wherein,
the storage unit is used for storing encrypted data for locking the communication equipment;
the lithium battery is used for supplying power to the storage unit;
the microswitch is used for disconnecting a link between the lithium battery and the storage unit when detecting that the cover of the communication equipment is opened, interrupting the power supply of the lithium battery to the storage unit, and losing encrypted data of the storage unit;
the micro control unit is used for locking the communication equipment when detecting that the encrypted data of the storage unit is lost.
Preferably, before the cover of the communication device is opened,
the microswitch is further used for switching on a link between the lithium battery and the storage unit when the cover of the communication equipment is detected to be closed, so that the lithium battery supplies power to the storage unit;
the micro control unit is further used for acquiring the encrypted data of the storage unit, verifying the encrypted data, and controlling the communication equipment to normally work after the verification is passed.
Preferably, the micro switch includes: the first pin is connected with the lithium battery, the second pin is connected with the static random access memory unit, and the third pin is grounded;
the microswitch is specifically used for controlling the elastic sheet to connect the first pin and the second pin and disconnect the first pin and the third pin when the cover of the communication equipment is detected to be closed; or when the cover of the communication equipment is detected to be opened, the elastic sheet is controlled to bounce, the first pin and the second pin are disconnected, and the first pin and the third pin are connected.
Preferably, the storage unit is: static random access memory chips or volatile memory.
Preferably, the lithium battery is a secondary lithium battery.
Correspondingly, the invention also provides an uncovering locking device, which is applied to communication equipment and comprises: the micro switch comprises an elastic sheet, a first pin, a second pin and a third pin, wherein the first pin is connected with the lithium battery, the second pin is connected with the storage unit, and the third pin is grounded;
the storage unit is used for storing encrypted data for locking the communication equipment;
the microswitch is used for controlling the elastic sheet to bounce when detecting that the cover of the communication equipment is opened, disconnecting the first pin and the second pin, connecting the first pin and the third pin, interrupting the power supply of the storage unit by the lithium battery, and losing encrypted data in the storage unit.
Preferably, before the cover of the communication device is opened,
the microswitch is further used for controlling the elastic sheet to be connected with the first pin and the second pin and to be disconnected with the first pin and the third pin when the cover of the communication equipment is detected to be closed, and the lithium battery supplies power to the storage unit.
Preferably, the storage unit is: static random access memory chips or volatile memory; the lithium battery is a rechargeable lithium battery.
Accordingly, the present invention further provides a method for unlocking a cover, which is applied to the communication device, and the communication device includes: the micro-switch comprises an elastic sheet, a first pin, a second pin and a third pin, wherein the first pin is connected with the lithium battery, the second pin is connected with the storage unit, and the third pin is grounded; the method comprises the following steps:
when the microswitch detects that the cover of the communication equipment is opened, the lithium battery is interrupted to supply power to the storage unit, and encrypted data stored in the storage unit are lost;
and the micro control unit detects the storage unit and locks the communication equipment when detecting that the encrypted data stored in the storage unit is lost.
Preferably, before the cover of the communication device is opened, the method further comprises:
when the microswitch detects that the cover of the communication equipment is closed, the microswitch controls the lithium battery to supply power to the storage unit, and encrypted data for encrypting the communication equipment are stored in the storage unit;
and when the micro control unit acquires the encrypted data of the storage unit, verifying the encrypted data, and after the verification is passed, controlling the communication equipment to normally work.
Preferably, the method further comprises:
converting voltage output by an external power supply for supplying power to the communication equipment to obtain stable voltage;
and reducing the stable voltage to a voltage meeting the requirement of the lithium battery, and charging the lithium battery.
Preferably, the microswitch comprises an elastic sheet, a first pin, a second pin and a third pin, wherein the first pin is connected with the lithium battery, the second pin is connected with the storage unit, and the third pin is grounded; wherein,
the interrupting of the power supply of the lithium battery to the storage unit specifically includes: the microswitch controls the elastic sheet to bounce, the first pin and the second pin are disconnected, the first pin and the third pin are connected, and the lithium battery does not supply power to the storage unit;
the controlling the lithium battery to supply power to the storage unit specifically comprises: and controlling the elastic sheet to be connected with the first pin and the second pin and to be disconnected with the first pin and the third pin, wherein the lithium battery supplies power to the storage unit.
The invention utilizes the characteristic of power failure data loss of a storage unit (such as an SRAM and the like), after the communication equipment is opened, the micro switch controls the lithium battery to be disconnected to supply power for the SRAM, and the encrypted data in the SRAM is lost, so that when the micro control unit MCU detects that the encrypted data in the storage unit is lost, the MCU cannot read the encrypted data in the SRAM, and the communication equipment is locked.
Drawings
Fig. 1 is a schematic structural diagram of a communication device provided in the present invention;
fig. 2 is a schematic structural diagram of an open-cover locking device when a cover of a communication device provided by the invention is opened;
fig. 3 is a schematic structural diagram of an open-cover locking device when a cover of a communication device provided by the invention is closed;
fig. 4 is a schematic circuit diagram of a door opening locking device according to the present invention;
fig. 5 is a flowchart of an uncapping locking method according to the present invention.
Detailed Description
In order to make the technical field of the invention better understand the scheme of the embodiment of the invention, the embodiment of the invention is further described in detail with reference to the drawings and the implementation mode.
Please refer to fig. 1, which is a schematic structural diagram of a communication device according to the present invention; the communication device includes: a microswitch 11, a lithium battery 12, a storage Unit 13 and a Micro Control Unit (MCU) 14, wherein,
the storage unit 13 is configured to store encrypted data for locking the communication device;
the storage unit may be a Static Random Access Memory (SRAM) or a volatile Memory, but is not limited thereto, and the storage unit may be any Memory that loses data due to power failure, and the embodiment is not limited thereto.
The lithium battery 12 is used for supplying power to the storage unit 13;
wherein the lithium battery is a small capacity lithium and secondary lithium battery. The charging mode can be that the lithium battery can be charged when the communication equipment is externally connected with a power supply and normally works.
The microswitch 11 is used for disconnecting a link between the lithium battery and the storage unit when detecting that the cover of the communication equipment is opened, interrupting the power supply of the lithium battery to the storage unit, and losing encrypted data of the storage unit;
the micro control unit 14 is configured to lock the communication device when the loss of the encrypted data of the storage unit is detected. For example, when the power of the storage unit is lost, that is, the lithium battery cannot supply power to the storage unit, the encrypted data of the storage unit is lost when the power is lost, and the micro control unit 14 cannot access the encrypted data of the storage unit, so as to lock the communication device.
Preferably, on the basis of the above embodiment, before the cover of the communication device is opened, the micro switch is further configured to, when it is detected that the cover of the communication device is closed, turn on a link between the lithium battery and a storage unit, so that the lithium battery supplies power to the storage unit. That is, normally, the cover of the communication device is closed, in which case the lithium battery supplies power to the storage unit all the time to ensure that the storage unit stores encrypted data that locks the communication device;
the micro control unit is further used for acquiring the encrypted data of the storage unit, verifying the encrypted data, and controlling the communication equipment to normally work after the verification is passed.
Preferably, in the above embodiment, the microswitch comprises: the first pin is connected with the lithium battery, the second pin is connected with the static random access memory unit, and the third pin is grounded;
when the cover of the communication equipment is in a closed state, the microswitch detects that the cover of the communication equipment is in the closed state, and controls the elastic sheet to connect the first pin and the second pin (namely, to connect a link between the first pin and the second pin) and disconnect the first pin and the third pin (namely, to disconnect the link between the first pin and the second pin); or
When the cover of the communication equipment is in an open state, the microswitch detects that the cover of the communication equipment is in the open state, controls the elastic sheet to bounce, disconnects the first pin and the second pin, and connects the first pin and the third pin.
Preferably, the storage unit may be: a static random access memory chip or volatile memory, or other component that loses internally stored data when power is lost, and the embodiment is not limited.
Preferably, the lithium battery may be a rechargeable lithium battery, that is, the lithium battery may be recharged when the communication device is connected to an external power source for normal operation.
In the invention, the encrypted data, such as encrypted codes and the like, locking the communication equipment are stored in the storage unit in advance, after the micro control unit (such as MCU) in the communication equipment is started, the encrypted data in the storage unit is read, the correctness of the encrypted data is verified, and after the verification is passed, the communication equipment works normally. If the cover of the communication device is opened once, the storage unit (such as an SRAM) loses power at the moment when the cover of the communication device is opened, so that internal data is lost, and the communication device is automatically locked when the micro control unit detects that the encrypted data in the storage unit is lost.
The invention adopts an extremely low power consumption device, only consumes static current when in normal work, and saves energy. Furthermore, the power-down data loss characteristic of the SRAM is utilized, and the internal space of the control module is saved.
Correspondingly, the invention also provides an uncovering locking device, which is applied to communication equipment, wherein the uncovering locking device comprises: the micro-switch comprises a first pin, a second pin, a third pin and an elastic sheet, wherein the first pin is connected with the lithium battery, the second pin is connected with the storage unit, and the third pin is grounded;
the storage unit is used for storing encrypted data for locking the communication equipment;
in this embodiment, the storage unit may further be: volatile memory, or other memory that loses data when power is lost, and the embodiment is not limited.
The microswitch is used for controlling the elastic sheet to bounce when detecting that the cover of the communication equipment is opened, disconnecting the first pin and the second pin, connecting the first pin and the third pin, interrupting the power supply of the storage unit by the lithium battery, and losing encrypted data of the storage unit, and the structural schematic diagram is shown in fig. 2 in detail, wherein fig. 2 is a structural schematic diagram of the uncapping locking device when the cover of the communication equipment is opened, namely a schematic diagram of the power supply loss of the SRAM at the moment when the cover of the communication equipment is opened.
Preferably, before the cover of the communication device is opened, the micro switch is further configured to control the elastic sheet to switch on the first pin and the second pin and switch off the first pin and the third pin when it is detected that the cover of the communication device is closed, the lithium battery supplies power to the storage unit, and a schematic structural diagram of the micro switch is shown in fig. 3 in detail, where fig. 3 is a schematic structural diagram of an uncapping locking device when the cover of the communication device is closed, that is, a schematic structural diagram of an SRAM supplied power by the lithium battery at the moment the cover of the communication device is closed.
In the embodiment shown in fig. 2 and 3, the first pin, the second pin and the third pin are respectively denoted by reference numerals 1, 2 and 3, and the spring plate is denoted by reference numeral 4.
As shown in fig. 2 and 3, the micro switch, the lithium battery and the SRAM are placed in a case of the communication apparatus in a normal state. The cover of the communication device is in a closed state, that is, the cover of the communication device presses the elastic sheet 4 of the micro switch, the elastic sheet is connected with the pins 1 and 2 of the micro switch, that is, a link between a lithium battery and the SRAM is connected, and the lithium battery supplies power to the SRAM (specifically, as shown in fig. 2).
When the cover of the communication equipment is opened, the elastic sheet 4 of the microswitch bounces, the pins 1 and 2 are disconnected, and the pins 1 and 3 are connected, namely, a link between the lithium battery and the SRAM is disconnected; the lithium battery cannot supply power to the SRAM, the SRAM loses power supply, and encrypted data stored inside the SRAM is lost. As shown in particular in fig. 3. At this time, because the power of the SRAM is lost, the internally stored encrypted data is lost, the MCU cannot read the pre-stored encrypted data from the SRAM, and then the communication device is locked.
Referring to fig. 4, a schematic diagram of a circuit of the door-opening locking device according to the present invention is shown, as shown in the figure, V42 is an external power source, which is converted by a direct current power source (DC/DC) to obtain a voltage of 4.2V (i.e., a stable voltage), and is stepped down to about 3.4V by diodes D9 (e.g., MMSD4148) and D15 (e.g., MMSD4148) to charge a lithium battery. In a normal state (i.e., a cover closed state) of the microswitch S1 (e.g., D2F-01L), since the cover of the communication device is in a closed state, pins 1 and 2 are turned on, i.e., a link between the rechargeable lithium battery B1 (e.g., VL2330-VCN) and the SRAM is turned on, in which case the lithium battery supplies power to the SRAM, and the V33SRAM supplies power to the SRAM in fig. 4. When the cover of the communication equipment is opened, the pin 1 and the pin 2 are disconnected, the pin 1 and the pin 3 are connected, namely, a link between the lithium battery and the SRAM is disconnected, the lithium battery cannot supply power to the SRAM, and encrypted data stored by the SRAM is lost; the MCU (not shown) will not be able to read the pre-stored encrypted data from the SRAM, locking the communication device.
Therefore, the invention provides a design scheme which is simple, convenient and easy to use, long-acting and small in occupied space. The characteristic that SRAM power-down data is lost is utilized, after the communication equipment is opened, the lithium battery is controlled to be disconnected to supply power to the SRAM, encrypted data in the SRAM are lost, and therefore the MCU cannot read the encrypted data in the SRAM, and therefore the communication equipment is locked. The SRAM device has extremely low power consumption, so that the power supply of the SRAM is ensured under the condition that the product is not started for about 90 days due to the small-volume lithium battery applied to the product.
Therefore, compared with the prior art, the method has the following advantages:
firstly, the function of uncapping and locking the equipment is realized by utilizing the power-down characteristic of the SRAM. In the embodiment, the SRAM is an extremely low power consumption device, the data stored in the SRAM does not need to be refreshed, only extremely low static current is needed, and the data are lost after power failure.
And secondly, a small-capacity rechargeable lithium battery is adopted to supply power to a storage unit (SRAM), the small-capacity lithium battery is adopted to greatly reduce the space occupation of a circuit board, and an external power supply for supplying power to the communication equipment can charge the lithium battery until the electric quantity of the lithium battery is full, so that the timeliness of the communication equipment is ensured.
And thirdly, the invention adopts a microswitch as a detection unit to control whether the lithium battery supplies power for the storage unit.
Based on the implementation process of the foregoing apparatus, an embodiment of the present invention further provides an uncapping locking method, a flowchart of which is shown in fig. 5 in detail, where the method is applied to the communication device, but is not limited to the communication device, and the communication device includes: the micro-switch, the lithium battery, the storage unit and the micro-control unit; the method comprises the following steps:
step 501: when the microswitch detects that the cover of the communication equipment is opened, the lithium battery is interrupted to supply power to the storage unit, and encrypted data stored in the storage unit are lost;
step 502: and the micro control unit detects the storage unit and locks the communication equipment when detecting that the encrypted data stored in the storage unit is lost.
Preferably, before the cover of the communication device is opened, the method may further include: when the microswitch detects that the cover of the communication equipment is closed, the microswitch controls the elastic sheet to connect the first pin and the second pin and disconnect the first pin and the third pin, the lithium battery supplies power for the storage unit, and encrypted data for encrypting the communication equipment are stored in the storage unit;
and when the micro control unit acquires the encrypted data of the storage unit, verifying the encrypted data, and after the verification is passed, controlling the communication equipment to normally work.
Preferably, the method may further comprise: converting voltage output by an external power supply for supplying power to the communication equipment to obtain stable voltage; and reducing the stable voltage to a voltage meeting the requirement of the lithium battery, and charging the lithium battery.
Preferably, in the above embodiment, the micro switch includes an elastic sheet, a first pin, a second pin, and a third pin, the first pin is connected to the lithium battery, the second pin is connected to the storage unit, and the third pin is grounded; the interrupting of the power supply of the lithium battery to the storage unit specifically includes: the microswitch controls the elastic sheet to bounce, the first pin and the second pin are disconnected, the first pin and the third pin are connected, and the lithium battery does not supply power to the storage unit; namely, the lithium battery is interrupted to supply power to the storage unit, and the encrypted data stored in the storage unit is lost;
the controlling the lithium battery to supply power to the storage unit specifically comprises: and controlling the elastic sheet to be connected with the first pin and the second pin, and disconnecting the first pin and the third pin, wherein the lithium battery supplies power to the storage unit, namely, the lithium battery is controlled to supply power to the storage unit.
The implementation process of each step in the method is detailed in the corresponding implementation process in the device, and is not described herein again.
The invention utilizes the characteristic of SRAM power-down data loss, controls the lithium battery to be disconnected to supply power to the SRAM after the communication equipment is opened, and the encrypted data in the SRAM is lost, so that the MCU can not read the encrypted data in the SRAM, thereby locking the communication equipment.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The term "comprising", without further limitation, means that the element so defined is not excluded from the group consisting of additional identical elements in the process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the present invention may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which may be stored in a storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the embodiments or some parts of the embodiments.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (12)
1. A communication device, comprising: a micro switch, a lithium battery, a storage unit and a micro control unit, wherein,
the storage unit is used for storing encrypted data for locking the communication equipment;
the lithium battery is used for supplying power to the storage unit;
the microswitch is used for disconnecting a link between the lithium battery and the storage unit when detecting that the cover of the communication equipment is opened, interrupting the power supply of the lithium battery to the storage unit, and losing encrypted data of the storage unit;
the micro control unit is used for locking the communication equipment when detecting that the encrypted data of the storage unit is lost.
2. The communication device of claim 1, wherein, prior to the cover of the communication device being opened,
the microswitch is further used for switching on a link between the lithium battery and the storage unit when the cover of the communication equipment is detected to be closed, so that the lithium battery supplies power to the storage unit;
the micro control unit is further used for acquiring the encrypted data of the storage unit, verifying the encrypted data, and controlling the communication equipment to normally work after the verification is passed.
3. A communication device according to claim 1 or 2, wherein the microswitch comprises: the first pin is connected with the lithium battery, the second pin is connected with the static random access memory unit, and the third pin is grounded;
the microswitch is specifically used for controlling the elastic sheet to connect the first pin and the second pin and disconnect the first pin and the third pin when the cover of the communication equipment is detected to be closed; or when the cover of the communication equipment is detected to be opened, the elastic sheet is controlled to bounce, the first pin and the second pin are disconnected, and the first pin and the third pin are connected.
4. The communication apparatus according to claim 1 or 2, wherein the storage unit is: static random access memory chips or volatile memory.
5. A communication device according to claim 1 or 2, wherein the lithium battery is a secondary lithium battery.
6. A door opening locking device applied to a communication apparatus, comprising: the micro switch comprises an elastic sheet, a first pin, a second pin and a third pin, wherein the first pin is connected with the lithium battery, the second pin is connected with the storage unit, and the third pin is grounded;
the storage unit is used for storing encrypted data for locking the communication equipment;
the microswitch is used for controlling the elastic sheet to bounce when detecting that the cover of the communication equipment is opened, disconnecting the first pin and the second pin, connecting the first pin and the third pin, interrupting the power supply of the storage unit by the lithium battery, and losing encrypted data in the storage unit.
7. The lid release locking device according to claim 6, wherein before the lid of the communication apparatus is opened,
the microswitch is further used for controlling the elastic sheet to be connected with the first pin and the second pin and to be disconnected with the first pin and the third pin when the cover of the communication equipment is detected to be closed, and the lithium battery supplies power to the storage unit.
8. The communication device of claim 6 or 7,
the storage unit is as follows: static random access memory chips or volatile memory;
the lithium battery is a rechargeable lithium battery.
9. An open-cover locking method applied to the communication device, the communication device comprising: the micro-switch, the lithium battery, the storage unit and the micro-control unit; the method comprises the following steps:
when the microswitch detects that the cover of the communication equipment is opened, the lithium battery is interrupted to supply power to the storage unit, and encrypted data stored in the storage unit are lost;
and the micro control unit detects the storage unit and locks the communication equipment when detecting that the encrypted data stored in the storage unit is lost.
10. The method of claim 9, wherein before the cover of the communication device is opened, the method further comprises:
when the microswitch detects that the cover of the communication equipment is closed, the microswitch controls the lithium battery to supply power to the storage unit, and encrypted data for encrypting the communication equipment are stored in the storage unit;
and when the micro control unit acquires the encrypted data of the storage unit, verifying the encrypted data, and after the verification is passed, controlling the communication equipment to normally work.
11. The method according to claim 9 or 10, characterized in that the method further comprises:
converting voltage output by an external power supply for supplying power to the communication equipment to obtain stable voltage;
and reducing the stable voltage to a voltage meeting the requirement of the lithium battery, and charging the lithium battery.
12. The method according to claim 9 or 10, wherein the micro switch comprises a spring plate, a first pin, a second pin and a third pin, wherein the first pin is connected with the lithium battery, the second pin is connected with the storage unit, and the third pin is grounded;
the interrupting of the power supply of the lithium battery to the storage unit specifically includes: the microswitch controls the elastic sheet to bounce, the first pin and the second pin are disconnected, the first pin and the third pin are connected, and the lithium battery does not supply power to the storage unit;
the controlling the lithium battery to supply power to the storage unit specifically comprises: and controlling the elastic sheet to be connected with the first pin and the second pin and to be disconnected with the first pin and the third pin, wherein the lithium battery supplies power to the storage unit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103147803A CN102360411A (en) | 2011-10-17 | 2011-10-17 | Uncovering locking method and device and communication device |
| PCT/CN2012/074308 WO2013056542A1 (en) | 2011-10-17 | 2012-04-18 | Locking method, device and communication device when cover is opened |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103147803A CN102360411A (en) | 2011-10-17 | 2011-10-17 | Uncovering locking method and device and communication device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102360411A true CN102360411A (en) | 2012-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103147803A Pending CN102360411A (en) | 2011-10-17 | 2011-10-17 | Uncovering locking method and device and communication device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102360411A (en) |
| WO (1) | WO2013056542A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013056542A1 (en) * | 2011-10-17 | 2013-04-25 | 湖南三一智能控制设备有限公司 | Locking method, device and communication device when cover is opened |
| CN108880810A (en) * | 2018-09-07 | 2018-11-23 | 江苏云涌电子科技股份有限公司 | One kind ruining key circuit structure |
| CN109446849A (en) * | 2018-12-25 | 2019-03-08 | 威海银创微电子技术有限公司 | Nonvolatile sram data encryption device |
| CN111639370A (en) * | 2020-06-11 | 2020-09-08 | 威海银创微电子技术有限公司 | Nonvolatile SRAM data encryption device |
| CN113806828A (en) * | 2021-09-22 | 2021-12-17 | 深圳市共进电子股份有限公司 | Cover opening protection device and method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101510243B (en) * | 2009-03-04 | 2011-12-14 | 深圳市凯明杨科技有限公司 | Data protection device and safety payment equipment |
| KR20110100466A (en) * | 2010-03-04 | 2011-09-14 | 삼성전자주식회사 | Power-Down Method for Systems With Volatile Memory Devices |
| CN102184352A (en) * | 2011-03-16 | 2011-09-14 | 东南大学 | Automatic protecting method for computer system based on Bluetooth device authentication |
| CN102360411A (en) * | 2011-10-17 | 2012-02-22 | 三一重工股份有限公司 | Uncovering locking method and device and communication device |
-
2011
- 2011-10-17 CN CN2011103147803A patent/CN102360411A/en active Pending
-
2012
- 2012-04-18 WO PCT/CN2012/074308 patent/WO2013056542A1/en active Application Filing
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013056542A1 (en) * | 2011-10-17 | 2013-04-25 | 湖南三一智能控制设备有限公司 | Locking method, device and communication device when cover is opened |
| CN108880810A (en) * | 2018-09-07 | 2018-11-23 | 江苏云涌电子科技股份有限公司 | One kind ruining key circuit structure |
| CN108880810B (en) * | 2018-09-07 | 2024-02-27 | 江苏云涌电子科技股份有限公司 | Key destroying circuit structure |
| CN109446849A (en) * | 2018-12-25 | 2019-03-08 | 威海银创微电子技术有限公司 | Nonvolatile sram data encryption device |
| CN109446849B (en) * | 2018-12-25 | 2023-05-12 | 威海银创微电子技术有限公司 | Non-volatile SRAM data encryption device |
| CN111639370A (en) * | 2020-06-11 | 2020-09-08 | 威海银创微电子技术有限公司 | Nonvolatile SRAM data encryption device |
| CN113806828A (en) * | 2021-09-22 | 2021-12-17 | 深圳市共进电子股份有限公司 | Cover opening protection device and method |
| CN113806828B (en) * | 2021-09-22 | 2024-02-02 | 深圳市共进电子股份有限公司 | Cover opening protection device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013056542A1 (en) | 2013-04-25 |
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Application publication date: 20120222 |