WO2013056542A1 - 一种开盖锁定方法、装置及通信设备 - Google Patents

一种开盖锁定方法、装置及通信设备 Download PDF

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Publication number
WO2013056542A1
WO2013056542A1 PCT/CN2012/074308 CN2012074308W WO2013056542A1 WO 2013056542 A1 WO2013056542 A1 WO 2013056542A1 CN 2012074308 W CN2012074308 W CN 2012074308W WO 2013056542 A1 WO2013056542 A1 WO 2013056542A1
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WIPO (PCT)
Prior art keywords
pin
storage unit
communication device
lithium battery
cover
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PCT/CN2012/074308
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English (en)
French (fr)
Inventor
周翔
刘俊
谢洪才
Original Assignee
湖南三一智能控制设备有限公司
三一重工股份有限公司
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Application filed by 湖南三一智能控制设备有限公司, 三一重工股份有限公司 filed Critical 湖南三一智能控制设备有限公司
Publication of WO2013056542A1 publication Critical patent/WO2013056542A1/zh

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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/70Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/78Protecting 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
    • G06F21/79Protecting 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
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F2221/00Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/21Indexing 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
    • G06F2221/2143Clearing memory, e.g. to prevent the data from being stolen

Definitions

  • the present invention relates to the field of construction machinery manufacturing technology, and in particular, to a cover opening locking method, device and communication device.
  • an open cover detection module is installed inside the communication device to automatically lock the product after the communication device is disassembled; since the detection circuit in the communication device needs power supply Therefore, the product also needs to realize the manual opening and closing function when there is no external power supply.
  • the commonly used solution is: adding a separate micro control unit MCU, a high-power lithium battery power supply unit and a detection unit inside the communication device, and the MCU monitors the signal of the detection unit in real time, and the MCU receives the signal when the product cover is opened. , Execute the command to realize the automatic locking function after the product is opened.
  • the inventors of the present invention have found that in the existing method of realizing the open cover locking, it is necessary to add a separate micro control unit MCU on the circuit board, thereby occupying more circuit boards. , increased cost, and requires a high-power lithium battery to power the MCU; and both the circuit board and the lithium battery must be packaged inside the MCU, taking up a lot of internal space. At the same time, the MCU needs to consume more energy to maintain the working state or low power state.
  • the invention provides an open cover locking method, device and communication device to solve the technical problem of product opening and closing.
  • an embodiment of the present invention provides a communication device, where the communication device is provided.
  • the device includes: a micro switch, a lithium battery, a storage unit, and a micro control unit, wherein the storage unit is configured to store encrypted data that locks the communication device;
  • the lithium battery is configured to supply power to the storage unit
  • the micro switch is configured to disconnect a link between the lithium battery and the storage unit when the cover of the communication device is detected to be opened, and interrupt the lithium battery to supply power to the storage unit, the storage unit Lost encrypted data;
  • the micro control unit is configured to lock the communication device when detecting that the encrypted data of the storage unit is lost.
  • the micro switch is further configured to turn on a link between the lithium battery and the storage unit when the cover of the communication device is detected to be closed, so that the lithium battery supplies power to the storage unit;
  • the micro control unit is further configured to acquire the encrypted data of the storage unit, verify the encrypted data, and control the communication device to work normally after the verification is passed.
  • the micro switch includes: a spring piece, a first pin, a second pin and a third pin, wherein the first pin is connected to the lithium battery, the second pin is connected to the static a random storage unit is connected, and the third pin is grounded;
  • the micro switch is specifically configured to control the elastic piece to open the first pin and the second pin when the cover of the communication device is detected to be closed, and disconnect the first pin and a third pin; or controlling the spring to bounce when the cover of the communication device is detected to be opened, disconnecting the first pin and the second pin, and turning on the first pin With the third pin.
  • the storage unit is: a static random access memory chip or a volatile memory.
  • the lithium battery is a rechargeable lithium battery.
  • the present invention further provides an open cover locking device, which is applied to a communication device, wherein the open cover locking device comprises: a micro switch, a lithium battery and a storage unit, wherein the micro switch comprises a spring piece and a first tube 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 storage unit is configured to store encrypted data that locks the communication device
  • the micro switch is configured to control the spring to bounce when the cover of the communication device is detected to be opened, disconnect the first pin and the second pin, and turn on the first pin and
  • the third pin interrupts the lithium battery to supply power to the storage unit, and the encrypted data in the storage unit is lost.
  • the micro switch is further configured to control the spring to turn on the first pin and the second pin, and disconnect the first pin and the third pin when detecting that the cover of the communication device is closed a pin, the lithium battery supplies power to the storage unit.
  • the storage unit is: a static random access memory chip or a volatile memory; and the lithium battery is a rechargeable lithium battery.
  • the present invention further provides an open cover locking method, which is applied to the communication device, the communication device includes: a micro switch, a lithium battery, a storage unit, and a micro control unit, wherein the micro switch includes a spring piece 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 method includes:
  • the micro control unit detects the storage unit and locks the communication device upon detecting loss of encrypted data stored by the storage unit.
  • the method further includes: the micro switch is configured to control the lithium battery to supply power to the storage unit when detecting that the cover of the communication device is closed.
  • the storage unit stores encrypted data for encrypting the communication device; when the micro control unit acquires the encrypted data of the storage unit, the encrypted data is verified, and after the verification is passed, the communication device is controlled. normal work.
  • the method further includes:
  • the micro switch includes a spring piece, a first pin, a second pin and a third pin, the first pin is connected to the lithium battery, the second pin and the storage unit Connecting, the third pin is grounded; wherein, the elastic piece is bounced, the first pin and the second pin are disconnected, and the first pin and the third pin are turned on, and the lithium battery is not Powering the storage unit;
  • the controlling the power supply of the lithium battery to the storage unit specifically includes: controlling the shrapnel connection The first pin and the third pin are disconnected by the first pin and the second pin, and the lithium battery supplies power to the storage unit.
  • the invention utilizes the characteristics of loss of power loss data of the storage unit (such as SRAM, etc.), after the communication device is opened, the micro switch controls the lithium battery to be disconnected to supply power to the SRAM, and the internal encrypted data of the SRAM is lost, so that the micro control unit MCU is detecting When the encrypted data to the storage unit is lost, that is, the MCU cannot read the encrypted data in the SRAM, thereby locking the communication device.
  • the storage unit such as SRAM, etc.
  • FIG. 1 is a schematic structural diagram of a communication device according to the present invention.
  • FIG. 2 is a schematic structural view of a cover opening locking device when a cover of a communication device is opened according to the present invention
  • FIG. 3 is a schematic structural view of a cover locking device when a cover of a communication device is closed according to the present invention
  • FIG. 4 is a schematic diagram of a circuit principle of an open cover locking device according to the present invention.
  • FIG. 5 is a flow chart of a method for unlocking a cover according to the present invention.
  • FIG. 1 is a schematic structural diagram of a communication device provided by the present invention.
  • the communication device includes: a micro switch 11 , a lithium battery 12 , a storage unit 13 , and a micro control unit ( MCU , Micro Control Unit , also referred to as a single micro Computer or single chip microcomputer) 14, wherein
  • the storage unit 13 is configured to store encrypted data that locks the communication device
  • the storage unit may be a static random access memory (SRAM) or a volatile memory.
  • SRAM static random access memory
  • the memory is not limited thereto, and the memory may be lost in the case of power failure.
  • the lithium battery 12 is configured to supply power to the storage unit 13;
  • the lithium battery is a small capacity lithium and rechargeable lithium battery.
  • the charging mode may be that the lithium battery can be charged when the communication device is externally connected to the power supply and is in normal operation.
  • the micro switch 11 is configured to disconnect a connection between the lithium battery and the storage unit when the cover of the communication device is detected to be opened, and interrupt the lithium battery to supply power to the storage unit, the storing Unit encrypted data is lost;
  • the micro control unit 14 is configured to lock the communication device when detecting that the encrypted data of the storage unit is lost. For example, when the storage unit is powered off, that is, when the lithium battery cannot supply power to the storage unit, the encrypted data of the storage unit is lost when the power is off, and the micro control unit 14 cannot access the storage unit. Encrypted data, thereby locking the communication device.
  • the micro switch is further configured to turn on the lithium battery and store when detecting that the cover of the communication device is closed A link between the units to cause the lithium battery to power the storage unit. That is to say, in general, the cover of the communication device is closed, in which case the lithium battery always supplies power to the storage unit to ensure that the storage unit stores encrypted data that locks the communication device;
  • the micro control unit is further configured to acquire encrypted data of the storage unit, verify the encrypted data, and control the communication device to work normally after the verification is passed.
  • the micro switch includes: a spring piece, a first pin, a second pin, and a third pin, wherein the first pin is connected to the lithium battery, and the second a pin is connected to the static random access unit, and the third pin is grounded;
  • the micro switch detects that the cover of the communication device is in a closed state, and controls the spring to turn on the first pin and the second tube a pin (ie, connecting a link between the first pin and the second pin), disconnecting the first pin from the third pin (ie, disconnecting between the first pin and the second pin) Link); or
  • the micro switch detects that the cover of the communication device is in an open state, controls the spring to bounce, and disconnects the first pin and the second a pin, the first pin and the third pin are turned on.
  • the storage unit may be: a static random access memory chip or a volatile memory, or other components that lose power to internally store the data, which is not limited in this embodiment.
  • the lithium battery may be a rechargeable lithium battery, that is, the lithium battery may be charged when the communication device is connected to an external power source for normal operation.
  • the encrypted data that locks the communication device such as an encryption code
  • the micro control unit such as the MCU
  • the micro control unit reads the encrypted data in the storage unit after booting, and verifies the The correctness of the encrypted data is described, and after the verification is passed, the communication device works normally. If the cover of the communication device has been opened, the storage unit For example, SRAM will lose power when the cover of the communication device is turned on, thus losing internal data.
  • the micro control unit detects that the encrypted data in the storage unit is lost, it automatically locks the communication device.
  • the invention adopts a very low power consumption device, and only consumes quiescent current during normal operation, thereby saving energy. Further, the SRAM power-down data loss feature is utilized, which saves the internal space of the control module.
  • the present invention also provides an open cover locking device, wherein the open cover locking device is applied to a communication device, wherein the open cover locking device comprises: a micro switch, a lithium battery and a storage unit (this embodiment uses SRAM
  • the micro switch includes a first pin, a second pin, a third pin, and a spring piece, the first pin is connected to the lithium battery, and the second pin is The storage unit is connected, and the third pin is grounded;
  • the storage unit is configured to store encrypted data that locks the communication device
  • the storage unit may be: a volatile memory, or another memory that loses data after power failure, which is not limited in this embodiment.
  • the micro switch is configured to control the spring to bounce when the cover of the communication device is detected to be opened, disconnect the first pin and the second pin, and turn on the first pin and a third pin, interrupting the lithium battery to supply power to the storage unit, and the encrypted data of the storage unit is lost, and the structure diagram thereof is shown in FIG. 2, wherein FIG. 2 is a cover of a communication device provided by the present invention.
  • FIG. 2 is a cover of a communication device provided by the present invention.
  • a schematic diagram of the structure of the cover opening locking device when opened that is, the schematic diagram of the power supply of the SRAM lost when the cover of the communication device is opened.
  • the micro switch is further configured to control the spring to turn on the first pin and the second when detecting that the cover of the communication device is closed a pin, disconnecting the first pin and the third pin, wherein the lithium battery supplies power to the storage unit, and a schematic structural view thereof is shown in FIG. 3.
  • FIG. 3 is a communication device provided by the present invention. The schematic diagram of the structure of the opening cover locking device when the cover is closed, that is, the schematic diagram of the lithium battery powering the SRAM at the moment when the cover of the communication device is closed.
  • first and second and third legs are designated by the numerals 1, 2 and 3, respectively, and the spring is indicated by reference numeral 4.
  • the micro switch, lithium battery and SRAM are placed in the box of the communication device under normal conditions.
  • the cover of the communication device is in a closed state, that is, the cover of the communication device presses the elastic piece 4 of the micro switch, and the elastic piece is connected to the pins 1 and 2 of the sway switch, that is, the lithium battery and the SRAM are turned on. Between the links, the lithium battery powers the SRAM (shown in Figure 2).
  • FIG. 4 is a circuit schematic diagram of a cover locking device provided by the present invention.
  • V42 is an external power source converted by a DC power supply (DC/DC) to obtain a 4.2V voltage (ie, a stable voltage).
  • Lithium battery is charged by diode D9 (such as MMSD4148) and D15 (such as MMSD4148) with a step-down of 3.4V.
  • the micro switch S1 (such as D2F-01L) is in the normal state (ie, the cover is closed). Since the cover of the communication device is in the closed state, the pins 1 and 2 are turned on, that is, the rechargeable lithium battery B1 is turned on (for example, VL2330).
  • the V33SRAM is the SRAM power supply.
  • the pin 1 and the pin 2 are disconnected, and the pin 1 and the pin 3 are turned on, that is, the link between the lithium battery and the SRAM is disconnected, and the lithium battery cannot be
  • the SRAM is powered, and the encrypted data stored in the SRAM is lost; the MCU (not shown) will not be able to read the pre-stored encrypted data from the SRAM, thereby locking the communication device.
  • the present invention provides a design that is easy to use, long-lasting, and small in space. That is, the SRAM power-down data loss characteristic is utilized. After the communication device is opened, the lithium battery is disconnected to supply power to the SRAM, and the encrypted data in the SRAM is lost, so that the MCU cannot read the encrypted data in the SRAM, thereby locking the communication device. Among them, the SRAM device consumes very little power, which makes the small-capacity lithium battery used in the product guarantee the power supply of the SRAM without the product being turned on for about 90 days.
  • the SRAM power-down feature is used to implement the function of the cover-locking device.
  • the SRAM power-down feature is used to implement the function of the cover-locking device.
  • SRAM is a very low power device. SRAM stores data without refreshing. It requires very low quiescent current and data loss after power loss.
  • the small-capacity rechargeable lithium battery is used to supply power to the storage unit (SRAM).
  • SRAM storage unit
  • the use of the small-capacity lithium battery greatly reduces the space occupied by the circuit board.
  • the external power supply for the communication device can charge the lithium battery until The lithium battery is fully charged, thus ensuring the pass The timeliness of the letter device.
  • the present invention employs a microswitch as a detection unit to control whether the lithium battery provides power to the storage unit.
  • the embodiment of the present invention further provides an open cover locking method according to the implementation process of the foregoing apparatus.
  • the flowchart is shown in FIG. 5.
  • the method is applied to the communication device, but is not limited to the communication device, and the communication is performed.
  • the device comprises: a micro switch, a lithium battery, a storage unit and a micro control unit; the method comprises:
  • Step 501 When the micro switch detects that the cover of the communication device is turned on, interrupts the lithium battery to supply power to the storage unit, and the encrypted data stored in the storage unit is lost;
  • Step 502 The micro control unit The storage unit performs detection, and locks the communication device upon detecting loss of encrypted data stored by the storage unit.
  • the method may further include: the micro switch is configured to control the spring to turn on the first pin when detecting that the cover of the communication device is closed And the second pin, the first pin and the third pin are disconnected, the lithium battery supplies power to the storage unit, and the storage unit stores encrypted data for encrypting the communication device;
  • the micro control unit verifies the encrypted data when acquiring the encrypted data of the storage unit, and controls the communication device to operate normally after the verification is passed.
  • the method may further include: converting a voltage output by an external power supply that supplies power to the communication device to obtain a stable voltage; and stepping down the stable voltage to a voltage that meets a requirement of the lithium battery to charge the lithium battery .
  • the micro switch includes a spring piece, a first pin, a second pin and a third pin, and the first pin is connected to the lithium battery, and the second pin Connected to the storage unit, the third pin is grounded;
  • the interrupting the power supply of the lithium battery to the storage unit specifically includes: the micro switch controls the spring to bounce, and disconnects the first tube
  • the first pin and the third pin are connected to the first pin and the third pin, and the lithium battery does not supply power to the storage unit; that is, the lithium battery is interrupted to supply power to the storage unit, in the storage unit The stored encrypted data is lost;
  • the controlling the power supply of the lithium battery to the storage unit specifically includes: controlling the shrapnel to turn on the first pin and the second pin, and disconnecting the first pin and the third pin,
  • a lithium battery supplies power to the storage unit, that is, controls the lithium battery to supply power to the storage unit.
  • the invention utilizes the SRAM power-down data loss characteristic. After the communication device is opened, the control lithium battery is disconnected to supply power to the SRAM, and the internal encrypted data of the SRAM is lost, so that the MCU cannot read the encrypted data in the SRAM, thereby locking the communication device. .
  • the present invention can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is a better implementation. the way.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product, which may be stored in a storage medium such as a ROM/RAM or a disk. , an optical disk, etc., includes instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention or portions of the embodiments.

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Abstract

本发明提供一种开盖锁定方法、装置及通信设备,所述通信设备包括:微动开关、锂电池、存储单元和微控制单元,所述存储单元,用于存储锁定所述通信设备的加密数据;所述锂电池,用于为所述存储单元供电;所述微动开关,用于在检测到所述通信设备的盖子被打开时,断开所述锂电池与存储单元之间的链路,中断锂电池为所述存储单元供电,所述存储单元加密数据丟失;所述微控制单元,用于在检测到所述存储单元的加密数据丟失时,锁定所述通信设备。本发明利用存储单元掉电数据丟失的特性,通信设备开盖后,控制锂电池断开为SRAM供电,SRAM内部加密数据丟失,以至于MCU无法读取SRAM中的加密数据,从而对通信设备进行锁定。

Description

一种开盖锁定方法、 装置及通信设备
本申请要求于 2011 年 10 月 17 日提交中国专利局、 申请号为 201110314780.3、 发明名称为"一种开盖锁定方法、 装置及通信设备"的中 国专利申请的优先权, 其全部内容通过引用结合在本申请中。
技术领域
本发明涉及工程机械制造技术领域,特别涉及一种开盖锁定方法、装置 及通信设备。
背景技术
随着国内工程机械行业的竟争日渐激烈, 加上工程机械价格昂贵, 用 户只需预付一定资金就可购买机械产品, 在后续的使用过程中, 当出现用 户逾期未交货款等违规情况,企业需要对卖出机械产品需要进行远程锁定, 远程锁定通过与机械产品内部的电子通信设备交互数据实现, 一些用户为 了在未经授权的情况下使用机械产品, 可能人为改装通信设备。
企业为了保护生产的产品内部的通信设备不被人为拆卸、 改装, 在通 信设备内部加装了开盖检测模块,实现在通信设备被拆开后自动锁定产品; 由于通信设备内的检测电路需要供电, 因此, 该产品在外部无供电的情况 下也要实现人为开盖锁定功能。
目前, 常用的解决方案为:在通信设备内部增加单独的微控制单元 MCU、 大功率锂电池供电单元和检测单元, MCU 实时监控检测单元的信 号, 当产品盖子打开后, MCU就会收到信号, 执行指令, 实现产品开盖后 的自动锁定功能。
在对现有技术的研究和实践过程中, 本发明的发明人发现, 现有的实 现开盖锁定的方式中,需要在电路板上增加单独的微控制单元 MCU,从而 占用较多的电路板, 增加了成本, 并需要大功率的锂电池为 MCU供电; 而且电路板和锂电池都必须封装在 MCU 内部, 占用大量内部空间。 同时 MCU需要消耗较多的能量来保持工作状态或低功耗状态。
发明内容
本发明提供一种开盖锁定方法、 装置及通信设备, 以解决产品开盖锁 定的技术问题。
为解决上述技术问题, 本发明实施例提供一种通信设备, 所述通信设 备包括: 微动开关、 锂电池、 存储单元和微控制单元, 其中, 所述存储单元, 用于存储锁定所述通信设备的加密数据;
所述锂电池, 用于为所述存储单元供电;
所述微动开关, 用于在检测到所述通信设备的盖子被打开时, 断开所 述锂电池与存储单元之间的链路, 中断锂电池为所述存储单元供电, 所述 存储单元加密数据丟失;
所述微控制单元, 用于在检测到所述存储单元的加密数据丟失时, 锁 定所述通信设备。
优选的, 在所述通信设备的盖子被打开之前,
所述微动开关, 还用于在检测到所述通信设备的盖子闭合时, 接通所 述锂电池与存储单元之间的链路, 以使所述锂电池为所述存储单元供电; 所述微控制单元, 还用于获取所述存储单元的加密数据, 并对所述加 密数据进行验证, 并在验证通过后, 控制所述通信设备正常工作。
优选的, 所述微动开关包括: 弹片、 第一管脚、 第二管脚和第三管脚, 所述第一管脚与所述锂电池连接, 所述第二管脚与所述静态随机存储单元 连接, 所述第三管脚接地;
所述微动开关, 具体用于在检测到所述通信设备的盖子闭合时, 控制 所述弹片接通所述第一管脚与所述第二管脚, 断开所述第一管脚与第三管 脚; 或者在检测到所述通信设备的盖子被打开时, 控制所述弹片弹起, 断 开所述第一管脚与所述第二管脚, 接通所述第一管脚与第三管脚。
优选的, 所述存储单元为: 静态随机存储芯片或易失性存储器。
优选的, 所述锂电池为可充电的锂电池。
相应的, 本发明还提供一种开盖锁定装置, 应用于通信设备, 所述开 盖锁定装置包括: 微动开关、 锂电池和存储单元, 其中, 所述微动开关包 括弹片、 第一管脚、 第二管脚和第三管脚, 所述第一管脚与所述锂电池连 接, 所述第二管脚与所述存储单元连接, 所述第三管脚接地;
所述存储单元, 用于存储锁定所述通信设备的加密数据;
所述微动开关, 用于在检测到所述通信设备的盖子被打开时, 控制所 述弹片弹起, 断开所述第一管脚和第二管脚,并接通第一管脚和第三管脚, 中断所述锂电池为所述存储单元供电, 所述存储单元中的加密数据丟失。 优选的, 在所述通信设备的盖子被打开之前,
所述微动开关, 还用于在检测到所述通信设备的盖子闭合时, 控制所 述弹片接通所述第一管脚和第二管脚, 断开所述第一管脚和第三管脚, 所 述锂电池为所述存储单元供电。
优选的, 所述存储单元为: 静态随机存储芯片或易失性存储器; 所述 锂电池为可充电的锂电池。
相应的, 本发明再提供一种开盖锁定方法, 应用于所述通信设备, 所 述通信设备包括: 微动开关、 锂电池、 存储单元和微控制单元, 其中, 所 述微动开关包括弹片、 第一管脚、 第二管脚和第三管脚, 所述第一管脚与 所述锂电池连接,所述第二管脚与所述存储单元连接,所述第三管脚接地; 所述方法包括:
所述微动开关在检测到所述通信设备的盖子被打开时, 中断所述锂电 池为所述存储单元供电, 所述存储单元中存储的加密数据丟失;
所述微控制单元对所述存储单元进行检测, 并在检测到所述存储单元 存储的加密数据丟失时, 锁定所述通信设备。
优选的, 在所述通信设备的盖子被打开前, 所述方法还包括: 所述微动开关在检测到所述通信设备的盖子闭合时, 控制所述锂电池 为所述存储单元供电,所述存储单元中存储有加密该通信设备的加密数据; 所述微控制单元在获取到所述存储单元的加密数据时, 对所述加密数 据进行验证, 并在验证通过后, 控制所述通信设备正常工作。
优选的, 所述方法还包括:
将为通信设备供电的外部电源输出的电压进行变换, 得到稳定电压; 将所述稳定电压降压为满足该锂电池要求的电压,为所述锂电池充电。 优选的, 所述微动开关包括弹片、 第一管脚、 第二管脚和第三管脚, 所述第一管脚与所述锂电池连接, 所述第二管脚与所述存储单元连接, 所 述第三管脚接地; 其中, 制所述弹片弹起, 断开所述第一管脚和第二管脚, 接通第一管脚和第三管 脚, 所述锂电池不为所述存储单元供电;
所述控制所述锂电池为所述存储单元供电具体包括: 控制所述弹片接 通所述第一管脚和第二管脚, 断开所述第一管脚和第三管脚, 所述锂电池 为所述存储单元供电。
本发明利用了存储单元(比如 SRAM等 )掉电数据丟失的特性, 通信 设备开盖后,微动开关控制锂电池断开为 SRAM供电, SRAM内部加密数 据丟失, 以至于微控制单元 MCU在检测到所述存储单元的加密数据丟失 时, 即 MCU无法读取 SRAM中的加密数据, 从而对通信设备进行锁定。
附图说明
图 1为本发明提供的一种通信设备的结构示意图;
图 2为本发明提供的一种通信设备的盖子被打开时开盖锁定装置的结 构示意图;
图 3为本发明提供的一种通信设备的盖子关闭时开盖锁定装置的结构 示意图;
图 4为本发明提供的一种开盖锁定装置的电路原理示意图;
图 5为本发明提供一种开盖锁定方法的流程图。
具体实施方式
为了使本技术领域的人员更好地理解本发明实施例的方案, 下面结合 附图和实施方式对本发明实施例作进一步的详细说明。
请参阅图 1 , 为本发明提供的通信设备的结构示意图; 所述通信设备包 括:微动开关 11、锂电池 12、存储单元 13和微控制单元( MCU, Micro Control Unit, 又称单片微型计算机或单片机) 14, 其中,
所述存储单元 13, 用于存储锁定所述通信设备的加密数据;
其中, 所述存储到单元可以是静态随机存储芯片 (SRAM , Static Random Access Memory )或易失性存储器, 但并不限于此, 只要是掉电丟 失数据的存储器均可以, 本实施例不作限制。
所述锂电池 12, 用于为所述存储单元 13供电;
其中, 所述锂电池为小容量锂且可充电的锂电池。 其充电方式可以是 在通信设备外接电源且正常工作时, 可以为该锂电池充电。
所述微动开关 11 , 用于在检测到所述通信设备的盖子被打开时, 断开 所述锂电池与存储单元之间的链路, 中断锂电池为所述存储单元供电, 所 述存储单元加密数据丟失; 所述微控制单元 14, 用于在检测到所述存储单元的加密数据丟失时, 锁定所述通信设备。 比如, 当所述存储单元掉电时, 即锂电池不能为所述 存储单元供电时, 所述存储单元的加密数据在断电时就会丟失, 所述微控 制单元 14就访问不到存储单元的加密数据, 从而锁定该通信设备。
优选的, 在上述实施例的基础上, 所述通信设备的盖子被打开之前, 所述微动开关, 还用于在检测到所述通信设备的盖子闭合时, 接通所述锂 电池与存储单元之间的链路, 以使所述锂电池为所述存储单元供电。 也就 是说, 通常情况下, 所述通信设备的盖子是闭合的, 这种情况下, 锂电池 一直为所述存储单元供电, 以保证存储单元存储锁定该通信设备的加密数 据;
所述微控制单元, 还用于获取所述存储单元的加密数据, 并对所述加 密数据进行验证, 并在验证通过后, 控制所述通信设备正常工作。
优选的, 在上述实施例中, 所述微动开关包括: 弹片、 第一管脚、 第 二管脚和第三管脚, 所述第一管脚与所述锂电池连接, 所述第二管脚与所 述静态随机存储单元连接, 所述第三管脚接地;
其中, 当通信设备的盖子处于闭合状态时, 所述微动开关就会检测到 所述通信设备的盖子处于闭合状态, 并控制所述弹片接通所述第一管脚与 所述第二管脚(即接通第一管脚和第二管脚之间的链路), 断开所述第一管 脚与第三管脚(即断开第一管脚和第二管脚之间的链路); 或者
当通信设备的盖子处于打开状态时, 所述微动开关就会检测到所述通 信设备的盖子处于被打开状态, 控制所述弹片弹起, 断开所述第一管脚与 所述第二管脚, 接通所述第一管脚与第三管脚。
优选的, 所述存储单元可以为: 静态随机存储芯片或易失性存储器, 或者其他掉电失去内部存储的数据的部件, 本实施例不作限制。
优选的, 所述锂电池可以为可充电的锂电池, 即在通信设备连接外部 电源正常工作时, 可以为该锂电池充电。
本发明中, 预先在存储单元中存储锁定该通信设备的加密数据, 比如 加密代码等, 通信设备内的微控制单元(比如 MCU )在开机后, 通过读取 存储单元内加密数据, 并验证所述加密数据的正确性, 并在验证通过后, 该通信设备正常工作。 如果该通信设备的盖子曾被打开, 该存储单元(比 如 SRAM )会在通信设备的盖子打开的瞬间失去供电,从而丟失内部数据, 当微控制单元检测到存储单元内的加密数据丟失后, 就会自动锁定该通信 设备。
本发明采用极低功耗器件,正常工作时只消耗静态电流, 节省了能量。 进一步, 利用了 SRAM掉电数据丟失特性, 节省了控制模块的内部空间。
相应的, 本发明还提供一种开盖锁定装置, 所述开盖锁定装置应用于 通信设备, 其中, 所述开盖锁定装置包括: 微动开关、 锂电池和存储单元 (本实施例以 SRAM为例), 其中, 所述微动开关包括第一管脚、 第二管 脚、 第三管脚和弹片, 所述第一管脚与所述锂电池连接, 所述第二管脚与 所述存储单元连接, 所述第三管脚接地;
所述存储单元, 用于存储锁定所述通信设备的加密数据;
其中, 在该实施例中, 所述存储单元还可以是: 易失性存储器, 或者 其他掉电丟失数据的存储器, 本实施例不作限制。
所述微动开关, 用于在检测到所述通信设备的盖子被打开时, 控制所 述弹片弹起, 断开所述第一管脚和第二管脚,并接通第一管脚和第三管脚, 中断所述锂电池为所述存储单元供电, 所述存储单元的加密数据丟失, 其 结构示意图详见图 2, 所述图 2为本发明提供的一种通信设备的盖子被打 开时开盖锁定装置的结构示意图, 即通信设备的盖子被打开的瞬间 SRAM 失去供电的原理图。
优选的, 在所述通信设备的盖子被打开之前, 所述微动开关, 还用于 在检测到所述通信设备的盖子闭合时, 控制所述弹片接通所述第一管脚和 第二管脚, 断开所述第一管脚和第三管脚, 所述锂电池为所述存储单元供 电, 其结构示意图详见图 3 , 所述图 3为本发明提供的一种通信设备的盖 子关闭时开盖锁定装置的结构示意图, 即通信设备的盖子闭合的瞬间锂电 池为 SRAM供电的原理图。
在如图 2和图 3所示的实施例中, 所述第一管脚和第二管脚和第三管 脚分别用标号 1、 2和 3表示, 弹片用标号 4表示。
如图 2和图 3所示,微动开关、锂电池和 SRAM置于通信设备的盒内, 正常状态下。 通信设备的盖子为闭合状态, 即通信设备的盖子压迫微动开 关的弹片 4,所述弹片接通敫动开关的管脚 1和 2, 即接通锂电池和 SRAM 之间的链路, 所述锂电池为 SRAM供电 (具体图 2所示)。
当通信设备的盖子被打开后, 微动开关的弹片 4弹起, 管脚 1和 2断 开, 且管脚 1和 3接通, 即锂电池和 SRAM之间的链路断开,; 锂电池就 不能为 SRAM供电, SRAM失去电源, 内部存储的加密数据丟失。 具体图 3 所示。 此时, 由于 SRAM 失去电源, 内部存储的加密数据丟失, MCU 将无法从 SRAM中读取预先存储的加密数据, 之后, 便锁定该通信设备。
还请参阅图 4 为本发明中提供的一种开盖锁定装置的电路原理示意 图, 如图所示, V42为外部电源通过直流电源 (DC/DC )变换, 得到 4.2V 电压 (即稳定电压), 通过二极管 D9 (比如 MMSD4148 )、 D15 (比如 MMSD4148 ) 降压为 3.4V 左右对锂电池进行充电。 微动开关 S1 (比如 D2F-01L )在正常状态 (即盖子闭合状态) 下, 由于通信设备的盖子处于 闭合状态,管脚 1和 2接通,即接通可充电的锂电池 Bl(比如 VL2330-VCN ) 和 SRAM之间的链路, 此时, 锂电池为 SRAM供电, 图 4中 V33SRAM 为 SRAM供电电源。 当通信设备的盖子被打开时, 管脚 1和管脚 2断开, 管脚 1和管脚 3接通, 即断开所述锂电池与 SRAM之间的链路, 所述锂电 池不能为所述 SRAM供电, SRAM存储的加密数据丟失; MCU (图中未 示)将无法从 SRAM中读取预先存储的加密数据, 从而锁定该通信设备。
因此, 本发明提供了一种筒便易用、 长效, 占用空间小的设计方案。 即利用了 SRAM掉电数据丟失特性, 通信设备开盖后, 控制锂电池断开为 SRAM供电, SRAM内部加密数据丟失, 以至于 MCU无法读取 SRAM中 的加密数据, 从而对通信设备进行锁定。 其中, SRAM器件耗电量极小, 使得产品中应用的小体积锂电池在产品持续 90 天左右不开机的情况下保 证 SRAM的供电。
因此, 本申请与现有技术相比, 存储如下优点:
首先,利用 SRAM掉电特性实现开盖锁定设备的功能。在该实施例中,
SRAM为极低功耗器件, SRAM存储数据无需刷新, 只需要极低的静态电 流, 在掉电后数据丟失。
其次, 采用小容量可充电锂电池对存储单元(SRAM )供电, 小容量 锂电池的采用大大缩小了电路板的空间占用, 正常使用时, 为通信设备供 电的外部电源可以为锂电池充电, 直至锂电池的电量充满, 从而保证了通 信设备的时效性。
再次, 本发明采用微动开关作为检测单元, 来控制锂电池是否为存储 单元提供电源。
基于上述装置的实现过程, 本发明实施例还提供一种开盖锁定方法, 其流程图详见图 5 , 所述方法应用于所述通信设备, 但并不限于此该通信 设备, 所述通信设备包括: 微动开关、 锂电池、 存储单元和微控制单元; 所述方法包括:
步骤 501 : 微动开关在检测到所述通信设备的盖子被打开时, 中断所 述锂电池为所述存储单元供电, 所述存储单元中存储的加密数据丟失; 步骤 502: 微控制单元对所述存储单元进行检测, 并在检测到所述存 储单元存储的加密数据丟失时, 锁定所述通信设备。
优选的, 在所述通信设备的盖子被打开前, 所述方法还可以包括: 所 述微动开关在检测到所述通信设备的盖子闭合时, 控制所述弹片接通所述 第一管脚和第二管脚, 断开所述第一管脚和第三管脚, 所述锂电池为所述 存储单元供电, 所述存储单元中存储有加密该通信设备的加密数据;
所述微控制单元在获取到所述存储单元的加密数据时, 对所述加密数 据进行验证, 并在验证通过后, 控制所述通信设备正常工作。
优选的, 所述方法还可以包括: 将为通信设备供电的外部电源输出的 电压进行变换, 得到稳定电压; 将所述稳定电压降压为满足该锂电池要求 的电压, 为所述锂电池充电。
优选的, 上述实施例中, 所述微动开关包括弹片、 第一管脚、 第二管 脚和第三管脚, 所述第一管脚与所述锂电池连接, 所述第二管脚与所述存 储单元连接, 所述第三管脚接地; 所述中断所述锂电池为所述存储单元供 电具体包括: 所述微动开关控制所述弹片弹起, 断开所述第一管脚和第二 管脚, 接通第一管脚和第三管脚, 所述锂电池不为所述存储单元供电; 即 中断了所述锂电池为所述存储单元供电, 所述存储单元中存储的加密数据 丟失;
所述控制所述锂电池为所述存储单元供电具体包括: 控制所述弹片接 通所述第一管脚和第二管脚, 断开所述第一管脚和第三管脚, 所述锂电池 为所述存储单元供电, 即控制所述锂电池为所述存储单元供电。 所述方法中各个步骤的实现过程详见上述装置中对应的实现过程, 在 此不再赘述。
本发明利用了 SRAM掉电数据丟失特性, 通信设备开盖后, 控制锂电 池断开为 SRAM供电, SRAM内部加密数据丟失, 以至于 MCU无法读取 SRAM中的加密数据, 从而对通信设备进行锁定。
需要说明的是, 在本文中, 诸如第一和第二等之类的关系术语仅仅用 来将一个实体或者操作与另一个实体或操作区分开来, 而不一定要求或者 暗示这些实体或操作之间存在任何这种实际的关系或者顺序。 而且, 术语 "包括"、 "包含"或者其任何其他变体意在涵盖非排他性的包含, 从而使得 包括一系列要素的过程、 方法、 物品或者设备不仅包括那些要素, 而且还 包括没有明确列出的其他要素, 或者是还包括为这种过程、 方法、 物品或 者设备所固有的要素。 在没有更多限制的情况下, 由语句 "包括一个 ...... " 限定的要素, 并不排除在包括所述要素的过程、 方法、 物品或者设备中还 存在另外的相同要素。
通过以上的实施方式的描述, 本领域的技术人员可以清楚地了解到本 发明可借助软件加必需的通用硬件平台的方式来实现, 当然也可以通过硬 件, 但很多情况下前者是更佳的实施方式。 基于这样的理解, 本发明的技 术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体 现出来, 该计算机软件产品可以存储在存储介质中, 如 ROM/RAM、磁碟、 光盘等, 包括若干指令用以使得一台计算机设备(可以是个人计算机, 服 务器, 或者网络设备等)执行本发明各个实施例或者实施例的某些部分所 述的方法。
以上所述仅是本发明的优选实施方式, 应当指出, 对于本技术领域的 普通技术人员来说, 在不脱离本发明原理的前提下, 还可以作出若干改进 和润饰, 这些改进和润饰也应视为本发明的保护范围。
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Claims

权 利 要 求
1、 一种通信设备, 其特征在于, 包括: 微动开关、 锂电池、 存储单元 和微控制单元, 其中,
所述存储单元, 用于存储锁定所述通信设备的加密数据;
所述锂电池, 用于为所述存储单元供电;
所述微动开关, 用于在检测到所述通信设备的盖子被打开时, 断开所 述锂电池与存储单元之间的链路, 中断锂电池为所述存储单元供电, 所述 存储单元加密数据丟失;
所述微控制单元, 用于在检测到所述存储单元的加密数据丟失时, 锁 定所述通信设备。
2、根据权利要求 1所述的通信设备, 其特征在于, 在所述通信设备的 盖子被打开之前,
所述微动开关, 还用于在检测到所述通信设备的盖子闭合时, 接通所 述锂电池与存储单元之间的链路, 以使所述锂电池为所述存储单元供电; 所述微控制单元, 还用于获取所述存储单元的加密数据, 并对所述加 密数据进行验证, 并在验证通过后, 控制所述通信设备正常工作。
3、根据权利要求 1或 2所述的通信设备, 其特征在于, 所述微动开关 包括: 弹片、 第一管脚、 第二管脚和第三管脚, 所述第一管脚与所述锂电 池连接,所述第二管脚与所述静态随机存储单元连接,所述第三管脚接地; 所述微动开关, 具体用于在检测到所述通信设备的盖子闭合时, 控制 所述弹片接通所述第一管脚与所述第二管脚, 断开所述第一管脚与第三管 脚; 或者在检测到所述通信设备的盖子被打开时, 控制所述弹片弹起, 断 开所述第一管脚与所述第二管脚, 接通所述第一管脚与第三管脚。
4、根据权利要求 1或 2所述的通信设备, 其特征在于, 所述存储单元 为: 静态随机存储芯片或易失性存储器。
5、根据权利要求 1或 2所述的通信设备, 其特征在于, 所述锂电池为 可充电的锂电池。
6、 一种开盖锁定装置, 其特征在于, 应用于通信设备, 所述开盖锁定 装置包括: 微动开关、 锂电池和存储单元, 其中, 所述微动开关包括弹片、 第一管脚、 第二管脚和第三管脚, 所述第一管脚与所述锂电池连接, 所述 第二管脚与所述存储单元连接, 所述第三管脚接地;
所述存储单元, 用于存储锁定所述通信设备的加密数据;
所述微动开关, 用于在检测到所述通信设备的盖子被打开时, 控制所 述弹片弹起, 断开所述第一管脚和第二管脚,并接通第一管脚和第三管脚, 中断所述锂电池为所述存储单元供电, 所述存储单元中的加密数据丟失。
7、根据权利要求 6所述开盖锁定装置, 其特征在于, 在所述通信设备 的盖子被打开之前,
所述微动开关, 还用于在检测到所述通信设备的盖子闭合时, 控制所 述弹片接通所述第一管脚和第二管脚, 断开所述第一管脚和第三管脚, 所 述锂电池为所述存储单元供电。
8、 根据权利要求 6或 7所述的通信设备, 其特征在于,
所述存储单元为: 静态随机存储芯片或易失性存储器;
所述锂电池为可充电的锂电池。
9、 一种开盖锁定方法, 其特征在于, 应用于所述通信设备, 所述通信 设备包括: 微动开关、 锂电池、 存储单元和微控制单元; 所述方法包括: 所述微动开关在检测到所述通信设备的盖子被打开时, 中断所述锂电 池为所述存储单元供电, 所述存储单元中存储的加密数据丟失;
所述微控制单元对所述存储单元进行检测, 并在检测到所述存储单元 存储的加密数据丟失时, 锁定所述通信设备。
10、 根据权利要求 9所述的方法, 其特征在于, 在所述通信设备的盖 子被打开前, 所述方法还包括:
所述微动开关在检测到所述通信设备的盖子闭合时, 控制所述锂电池 为所述存储单元供电,所述存储单元中存储有加密该通信设备的加密数据; 所述微控制单元在获取到所述存储单元的加密数据时, 对所述加密数 据进行验证, 并在验证通过后, 控制所述通信设备正常工作。
11、根据权利要求 9或 10所述的方法,其特征在于,所述方法还包括: 将为通信设备供电的外部电源输出的电压进行变换, 得到稳定电压; 将所述稳定电压降压为满足该锂电池要求的电压,为所述锂电池充电。
12、根据权利要求 9或 10所述的方法, 其特征在于, 所述微动开关包 括弹片、 第一管脚、 第二管脚和第三管脚, 所述第一管脚与所述锂电池连 接, 所述第二管脚与所述存储单元连接, 所述第三管脚接地; 制所述弹片弹起, 断开所述第一管脚和第二管脚, 接通第一管脚和第三管 脚, 所述锂电池不为所述存储单元供电;
所述控制所述锂电池为所述存储单元供电具体包括: 控制所述弹片接 通所述第一管脚和第二管脚, 断开所述第一管脚和第三管脚, 所述锂电池 为所述存储单元供电。
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101510243A (zh) * 2009-03-04 2009-08-19 深圳市凯明杨科技有限公司 一种数据安全保护装置及安全支付设备
US20110219248A1 (en) * 2010-03-04 2011-09-08 Beom-Sig Cho Power-down method for system having volatile memory devices
CN102184352A (zh) * 2011-03-16 2011-09-14 东南大学 基于蓝牙设备认证的计算机系统自动防护方法
CN102360411A (zh) * 2011-10-17 2012-02-22 三一重工股份有限公司 一种开盖锁定方法、装置及通信设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101510243A (zh) * 2009-03-04 2009-08-19 深圳市凯明杨科技有限公司 一种数据安全保护装置及安全支付设备
US20110219248A1 (en) * 2010-03-04 2011-09-08 Beom-Sig Cho Power-down method for system having volatile memory devices
CN102184352A (zh) * 2011-03-16 2011-09-14 东南大学 基于蓝牙设备认证的计算机系统自动防护方法
CN102360411A (zh) * 2011-10-17 2012-02-22 三一重工股份有限公司 一种开盖锁定方法、装置及通信设备

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