CN210836095U - Safe mobile storage device capable of being rapidly and physically destroyed and destruction circuit - Google Patents

Safe mobile storage device capable of being rapidly and physically destroyed and destruction circuit Download PDF

Info

Publication number
CN210836095U
CN210836095U CN201921725838.1U CN201921725838U CN210836095U CN 210836095 U CN210836095 U CN 210836095U CN 201921725838 U CN201921725838 U CN 201921725838U CN 210836095 U CN210836095 U CN 210836095U
Authority
CN
China
Prior art keywords
module
storage device
interface
main control
power supply
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201921725838.1U
Other languages
Chinese (zh)
Inventor
刘超
焦斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Junhan Information Technology Co ltd
Original Assignee
Hunan Junhan Information Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hunan Junhan Information Technology Co ltd filed Critical Hunan Junhan Information Technology Co ltd
Priority to CN201921725838.1U priority Critical patent/CN210836095U/en
Application granted granted Critical
Publication of CN210836095U publication Critical patent/CN210836095U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Storage Device Security (AREA)

Abstract

The utility model provides a but safe mobile storage device and destruction circuit of quick physics destruction, including storage module, data processor, GSM communication module, orientation module, power module, destruction main control chip, a plurality of resistance, electric capacity and MOS pipe, storage module comprises NAND Flash chip and main control chip, and it fixes a position safe mobile storage device through multimode navigation positioning system in real time, and the customer can know this storage device position in real time, and the customer of being convenient for judges whether this safe mobile storage device is in safe use region, if safe mobile storage device is not in safe district within range, so the customer can judge whether to lead to because of stealing storage device, thereby sends the instruction through communication module, destroys the storage data in the safe mobile storage device. The utility model discloses a quick physics that destroys circuit adoption destroys function, weak point consuming time, the low power dissipation can destroy the storage data in several seconds fast, very big assurance the safety of data.

Description

Safe mobile storage device capable of being rapidly and physically destroyed and destruction circuit
Technical Field
The utility model belongs to the technical field of solid-state storage device's safety protection design technique and specifically relates to a but safe mobile storage device and destruction circuit of quick physics destruction are related to.
Background
With the continuous development of information technology, under the traditional PC architecture, data is generally stored by using a fixed or mobile storage device, so that data security completely depends on the protection capability of the storage device, and two major means known to present to have a huge threat to data security are as follows:
(1) losing secret: mainly means that the secret-related storage equipment is lost due to poor storage.
(2) Stealing secret: the method mainly means that internal personnel or external personnel enter a sensitive place to illegally steal sensitive data or sensitive data storage media.
It can be seen that two major information security risk points are concentrated on the carelessness of the storage device during unattended or guard, so how to locate the data storage device, how to find out the location point of the storage device, how to rapidly destroy the storage device, and how to prevent data loss becomes an urgent technical problem to be solved in the data security protection era under special environments.
SUMMERY OF THE UTILITY MODEL
Go up storage device under to current traditional PC framework among the prior art because the secret serious problem that causes is stolen to the data loss of secret, the utility model provides a but safe mobile storage device and destruction circuit of quick physics destruction. The utility model provides a but it carries out real-time location to safe mobile storage device through multimode navigation positioning system to the safe mobile storage device of quick physics destruction, and the customer can know this storage device position in real time, and the customer of being convenient for judges whether this safe mobile storage device is in safe use area, if safe mobile storage device is not in safe district within range, so the customer can judge whether because steal storage device and lead to, thereby send the instruction through communication module, destroy the storage data in the safe mobile storage device. The existing destruction circuit on the market achieves the function of destroying the power supply pin of Flash after the voltage is raised through the booster circuit, and has the defects of long time consumption and large power consumption, and because the destruction time is overlong, the danger of data leakage is easily caused during the destruction. The utility model provides a but circuit is destroyed to quick physics, the quick physics of adoption destroys the function, weak point consuming time, and the low power dissipation can destroy storage device data in a few seconds fast, very big assurance customer data's safety.
In order to achieve the technical purpose, the utility model discloses a specific technical scheme as follows:
a circuit capable of rapidly and physically destroying comprises a storage module, a data processor, a GSM communication module, a positioning module and a power supply module, wherein the storage module consists of a NAND Flash chip and a main control chip; the power supply module is connected with the storage module, the data processor, the GSM communication module and the positioning module; the power supply module is connected with an external power supply and supplies power to each module in the system; the data processor is electrically connected with the storage module, the GSM communication module, the positioning module and the power supply module respectively; and the GSM communication module is in communication connection with the client terminal through an antenna interface. The utility model discloses an innovation part lies in: the destroying device also comprises a destroying main control chip, a plurality of resistors, a capacitor and MOS (metal oxide semiconductor) tubes, wherein the destroying main control chip adopts a singlechip STC15F101W, and the data processor is connected with a P3.5 interface of the singlechip STC15F101W through a diode D11; the VCC interface of the singlechip STC15F101W is connected with a power supply; the GND interface of the singlechip STC15F101W is grounded; the P3.1 interface of the singlechip STC15F101W is connected with the base electrode of an MOS tube Q1, and the collector electrode of the MOS tube Q1 is connected with the NAND Flash chip of the storage module; one ends of the resistor R585 and the capacitor C271 are both connected with the base electrode of the MOS transistor Q1, the other ends of the resistor R585 and the capacitor C271 are both connected with the emitter electrode of the MOS transistor Q1, and the emitter electrode of the MOS transistor Q1 is grounded; the P3.3 interface of the singlechip STC15F101W is connected with the main control chip of the storage module through R576.
Preferably, the P3.2 interface and the P3.4 interface of singlechip STC15F101W are used as an indication interface, and what connect is an indicator lamp.
Preferably, the positioning module adopts a multi-mode positioning module.
Preferably, multimode location module adopts SKG09 DU's multimode positioning system multi-frequency high performance GNSS module that astronomical survey was observed and controled for acquire safe mobile storage device's real-time position information.
Preferably, the utility model discloses still include inside independent power supply, inside independent power supply and GSM communication module, storage module, destroy main control chip and orientation module electric connection when power module and external power source disconnection, for each module power supply.
Preferably, the main control chip of the storage module of the present invention adopts an ASIC chip or an FPGA chip;
preferably, the main control chip of the memory module of the present invention adopts SMI 2246EN or xilinx K7/V7 series programmable logic devices.
Preferably, the GSM communication module of the present invention employs M26 module of shanghai mobile telecommunications technology limited.
On the other hand, the utility model provides a but safe mobile storage device of quick physics destruction, it includes any kind of above-mentioned quick physics destruction circuit.
The utility model has the advantages as follows:
the utility model discloses can destroy the circuit by quick physics, the quick physics of adoption destroys the function, weak point consuming time, and the low power dissipation can destroy the storage data in a few seconds fast, very big assurance the safety of data.
The utility model discloses it carries out real-time positioning monitoring to safe mobile storage device like solid state hard drives through multimode navigation positioning technique. The client can acquire the real-time position information of the safe mobile storage device through the mobile phone terminal, the client judges whether the safe storage device is in a safe use area or not according to the real-time position information of the safe mobile storage device, if the safe mobile storage device is not in the safe use area, the client communicates with the GSM communication module through the mobile phone terminal and triggers the destroying circuit of the GSM communication module, the independent power supply supplies power to the GSM communication module and the destroying module at the moment, the data self-destroying function of the solid state disk is started, and the data in the solid state disk is effectively and automatically destroyed in the process of a secret losing event, so that the data security domain is efficiently protected.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a diagram of communication relationships between the constituent modules according to an embodiment of the present invention.
Fig. 3 is a block diagram of a multi-mode positioning module used in an embodiment of the present invention.
Fig. 4 is a block diagram of a communication module used in an embodiment of the present invention.
Fig. 5 is a circuit diagram of a fast physical destruction circuit used in an embodiment of the present invention.
Detailed Description
In order to make the technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Referring to fig. 1, a safe mobile storage device capable of being physically destroyed quickly includes a storage module, a data processor, a GSM communication module, a multi-mode positioning module, a destruction circuit, an independent power supply, and a power supply module.
The power module is connected with the storage module, the data processor, the GSM communication module and the multimode positioning module. The power module is connected with an external power supply and supplies power to each module. The independent power supply is electrically connected with the GSM communication module, the storage module, the destruction circuit and the multi-mode positioning module when the power supply module is disconnected with an external power supply, and supplies power to each module.
The destruction circuit is electrically connected with the GSM communication module, the storage module, the data processor and the independent power supply, and after receiving a destruction instruction from the GSM communication module, the data in the storage module are rapidly and physically destroyed. The data processor is electrically connected with the storage module, the GSM communication module, the multi-mode positioning module and the power module respectively.
The GSM communication module is in communication connection with the client terminal through the antenna interface, and the position information of the safe mobile storage device acquired by the multimode positioning module in real time is sent to the client terminal through a network.
The multimode positioning module accurately positions the position of the safe mobile storage device, and the safe mobile storage device sends the real-time position information acquired by the multimode positioning module to the client terminal through the communication module.
The storage module is composed of a NAND Flash chip and an SSD main control chip. The main control chip can be formed by mainstream ASIC chips or FPGA chips, such as SMI 2246EN or xilinx K7/V7 series programmable logic devices.
The utility model discloses a communication module is GSM communication module, client terminal is mobile phone terminal. The data processor receives the instruction information sent from the client terminal through the GSM communication module.
The position of the hard disk is positioned in real time by utilizing a multimode positioning technology, a customer can limit the safe use range of the solid state hard disk through a mobile phone terminal, once the solid state hard disk leaves a safe use area, the safe mobile storage device can send the real-time position to the customer through a communication module, if the situation such as theft occurs is judged by the customer, the customer can send an instruction through the mobile phone terminal, the safe mobile storage device receives instruction information through the communication module, the independent power supply supplies power, quick data destruction can be realized through the characteristics of a destruction circuit and a storage medium, the data destruction processing after the secret is stolen can be quickly solved, and the safety protection performance is improved.
The utility model discloses on using present existing multimode location technique to safe removal storage device, install multimode orientation module and GSM communication module additional in storage device promptly, utilize multimode orientation module to carry out accurate location to safe removal storage device's position, safe removal storage device sends client terminal through the real-time position information that GSM communication module acquireed multimode orientation module.
Referring to fig. 2, when a user uses the mobile terminal or the pc terminal normally, the user may send a location planning instruction to the secure mobile storage device, set a secure use location area that the secure mobile storage device can use, and the secure mobile storage device receives the location planning instruction of the user through the communication module, and then transmits the location planning instruction to the data processor and is distributed and stored by the data processor. The safety mobile storage device obtains the positioning information of the safety mobile storage device in real time through the multi-mode positioning module in the working process, the positioning information is transmitted to the data processing module, once the positioning information sent by the multi-mode positioning module is inconsistent with the set safe use position area, the data processing module sends early warning information to the mobile terminal or the pc terminal of a user through the communication module, and the mobile terminal or the pc terminal of the user can send destruction signals to the safety mobile storage device after receiving the early warning signals. At this time, after the communication module of the safe mobile storage device receives the destruction signal, the destruction signal is transmitted to the data processor, the data processor provides an enabling signal, the destruction circuit is started, and the storage module and the data processor are destroyed to completely destroy the data, so that the data protection effect is achieved. If the storage device and the power supply are taken away (such as a fixed hard disk inserted in a notebook), the power supply module supplies power to realize a series of functions; if only storage device is taken away, this use novel safe mobile storage device can switch to independent power supply in the twinkling of an eye of outage, sends early warning information through communication module during switching power supply, and the suggestion customer hard disk has been powered off, accomplishes above-mentioned a series of functions after receiving the destruction instruction that the customer sent again.
Fig. 3 is a block diagram of a multi-mode positioning module according to an embodiment of the present invention. In this embodiment, the multimode positioning module adopts a multimode positioning system multi-frequency high-performance GNSS module of SKG09DU for astronomical measurement and control. SKG09DU is a high performance GNSS integrated solution module with ultra high sensitivity, ultra low power consumption and small form factor. The radio frequency signal is applied to the antenna input of the module, and serial data information of complete position, speed and time information is given out at the serial interface by utilizing an NMEA protocol or a custom protocol. Based on the high-performance characteristic of a Union department MT3333 single-chip microcomputer framework, Its-165dBm tracking sensitivity expands the positioning coverage range to places such as urban canyons, dense leaf environments and the like where GNSS cannot be achieved before. The module has small volume and low power consumption, and is easy to integrate with portable devices such as PNDs, mobile phones, cameras, vehicle navigation systems and the like.
Fig. 4 is a block diagram of a communication module used in an embodiment of the present invention, in which the communication module is an M26 module of shanghai mobile telecommunications technology limited. As shown in fig. 4, the M26 module is an industrial grade four-band GSMIGPRS wireless module. The working frequency ranges are GSM850MHz, EGSM900MHz, DCS1800MHz and PCS1900MHz, M26 provides GPRS data transmission and GSM short message service, and supports GPRS multi-slot class1-12 (default is class12), GPRS coding formats CS-1, CS-2, CS-3 and CS-4. The M26 module adopts a low power consumption technology, and the current power consumption is as low as 1.3mA in the sleep mode DRX ═ 5F. M26 embeds TCP/UDP, FTP, PPP, HTTP and other data transmission protocols, and the embedded extended AT command can make the user use these Internet protocols more easily. On the premise of not needing extra hardware circuits, FR, HR and EFR voice channel coding can be supported, and signal interaction is carried out between the equipment and a mobile terminal or a pc terminal of a user through an antenna interface (RF) in the communication process.
Fig. 5 is a circuit that can destroy physics fast that provides in a specific embodiment of the present invention, including memory module, data processor, GSM communication module, orientation module and power module, singlechip STC15F101W, resistance R569, R570, R576, R585, electric capacity C265, C271, diode D11 and MOS transistor Q1. The storage module consists of a NAND Flash chip and a main control chip.
The VCC interface of the singlechip STC15F101W is connected with a power supply; the GND interface of the singlechip STC15F101W is grounded. The P3.1 interface of the singlechip STC15F101W is connected with the base electrode of the MOS tube Q1, and the collector electrode of the MOS tube Q1 is connected with the NAND Flash chip of the storage module. One ends of the resistor R585 and the capacitor C271 are both connected with the base electrode of the MOS transistor Q1, the other ends of the resistor R585 and the capacitor C271 are both connected with the emitter electrode of the MOS transistor Q1, and the emitter electrode of the MOS transistor Q1 is grounded. The P3.3 interface of the singlechip STC15F101W is connected with the main control chip of the storage module through R576. The P3.2 interface and the P3.4 interface of the singlechip STC15F101W are used as an indicating interface and are connected with an indicating lamp. The data processor is connected with a P3.5 interface of the singlechip STC15F101W through a diode D11.
In this embodiment, when the data processor does not receive the destruction signal, the Y _ ERASE _ TRIG signal is at a high level, and the unidirectional conductivity of the diode D11 is utilized, at this time, the P3.5 interface of the monolithic computer STC15F101W is in a high impedance state, the destruction function is not triggered, and the monolithic computer STC15F101W is in a sleep state. When the data processor receives a destruction instruction sent by the GSM communication module, Y _ ERASE _ TRIG outputs a low level, the diode D11 is in a working state, the level value of the P3.5 pin of the singlechip STC15F101W is pulled down, when the P3.5 interface of the singlechip STC15F101W is in a low level, the singlechip executes a function, and at the moment, the P3.1 interface of the singlechip STC15F101W outputs a high level to the IO port of the NAND Flash chip of the storage module. Meanwhile, a P3.3 interface of the single chip microcomputer STC15F101W outputs a low level to a main control chip of the storage module, and the level value of a self-destruction pin of the main control chip is lowered, so that the quick double self-destruction function of the main control and the storage module is realized. The NAND Flash chip burns out an IO port, so the burning-out speed is far faster than the speed of burning out the main control chip, the pin level of the main control chip is fed back, when the pin level of the main control chip presents a high resistance state, the pin level is fed back to a P3.5 pin of a singlechip STC15F101W, and the self-destruction is stopped at the moment.
The P3.4 and P3.2 interfaces of the single chip microcomputer STC15F101W are used as an indicating interface, an indicator lamp is connected, when the destroying circuit is triggered, the P3.2 interface of the single chip microcomputer STC15F101W outputs a high level, the high level is connected with the indicator lamp through a Y _ ERASE _ DIS signal, the indicator lamp is lightened, meanwhile, the signal is fed back to a P3.4 pin of the single chip microcomputer STC15F101W, the P3.4 pin is pulled down to an analog ground through a DAS/DSS at ordinary times, when the destroying function is not triggered, the pin is at a low level, and when the signal is fed back and the high level is input, the timing function of the pin is triggered. The signal is mainly used when the destroying time is tested, and the device is not used when the device works normally.
At present, some safe mobile storage devices such as solid-state disks are provided with a destroying circuit to clear data in a storage module, but the destroying time is too long, the power consumption is too large, once the power supply of an independent power supply is insufficient, the destroying is not thorough, and the risk of leakage is caused. The utility model discloses when the safe mobile storage device is not gone up the electricity like solid state hard drives, through the power supply of inside independent power, when the safe mobile storage device is like solid state hard drives position, not in the safety range that the customer terminal set for, customer terminal can with communication module real-time communication, send and destroy the instruction and give data processor, under data processor's control, trigger the automatic data information of destroying the storage in storage module of destroying the circuit fast, the utility model discloses destroy the circuit and have some differences with the hard disk on the market, the IO mouth is poured into to the direct circuit after will stepping up, only need short several seconds, just can physically destroy storage device, and required consumption only needs storage device's on the market fourth, has really realized the low-power consumption, efficient quick destroy function.
The destroying circuit can also complete the data erasure of the NAND Flash in the storage module through the ATA destroying instruction in the main control chip of the storage module.
In summary, although the present invention has been described with reference to the preferred embodiments, it should be understood that the present invention is not limited thereto, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention.

Claims (9)

1. A circuit capable of rapidly and physically destroying comprises a storage module, a data processor, a GSM communication module, a positioning module and a power supply module, wherein the storage module consists of a NAND Flash chip and a main control chip; the power supply module is connected with the storage module, the data processor, the GSM communication module and the positioning module; the power supply module is connected with an external power supply and supplies power to each module in the system; the data processor is electrically connected with the storage module, the GSM communication module, the positioning module and the power supply module respectively; the GSM communication module is in communication connection with the client terminal through an antenna interface; the destroying device is characterized by further comprising a destroying main control chip, a plurality of resistors, a plurality of capacitors and MOS (metal oxide semiconductor) tubes, wherein the destroying main control chip adopts a singlechip STC15F101W, and the data processor is connected with a P3.5 interface of the singlechip STC15F101W through a diode D11; the VCC interface of the singlechip STC15F101W is connected with a power supply; the GND interface of the singlechip STC15F101W is grounded; the P3.1 interface of the singlechip STC15F101W is connected with the base electrode of an MOS tube Q1, and the collector electrode of the MOS tube Q1 is connected with the NAND Flash chip of the storage module; one ends of the resistor R585 and the capacitor C271 are both connected with the base electrode of the MOS transistor Q1, the other ends of the resistor R585 and the capacitor C271 are both connected with the emitter electrode of the MOS transistor Q1, and the emitter electrode of the MOS transistor Q1 is grounded; the P3.3 interface of the singlechip STC15F101W is connected with the main control chip of the storage module through R576.
2. The fast physical destruction circuit according to claim 1, wherein the P3.2 interface and the P3.4 interface of the single-chip STC15F101W are used as an indication interface, and an indication lamp is connected.
3. The fast physical destruction circuit according to claim 1 or 2, wherein the positioning module is a multi-mode positioning module.
4. The fast physical destruction circuit according to claim 3, wherein the multi-mode positioning module employs a multi-mode positioning system multi-frequency high-performance GNSS module of SKG09DU for astronomical measurement and control, for obtaining real-time location information of the secure mobile storage device.
5. The fast physical destruction circuit according to claim 1, further comprising an internal independent power supply electrically connected to the GSM communication module, the storage module, the destruction main control chip and the positioning module when the power module is disconnected from the external power supply, for supplying power to each module.
6. The fast physical destruction circuit according to claim 1, wherein the main control chip of the memory module is an ASIC chip or an FPGA chip.
7. The fast physical destruction circuit according to claim 1, wherein the main control chip of the memory module is an SMI 2246EN or xilinx K7/V7 series programmable logic device.
8. The fast physical destruction circuit according to claim 1, wherein the GSM communication module is M26 module of shanghai shiyama communication technologies ltd.
9. A fast physically destructible secure removable memory device comprising a fast physically destructible circuit according to any one of claims 1-8.
CN201921725838.1U 2019-10-15 2019-10-15 Safe mobile storage device capable of being rapidly and physically destroyed and destruction circuit Active CN210836095U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921725838.1U CN210836095U (en) 2019-10-15 2019-10-15 Safe mobile storage device capable of being rapidly and physically destroyed and destruction circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921725838.1U CN210836095U (en) 2019-10-15 2019-10-15 Safe mobile storage device capable of being rapidly and physically destroyed and destruction circuit

Publications (1)

Publication Number Publication Date
CN210836095U true CN210836095U (en) 2020-06-23

Family

ID=71254407

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921725838.1U Active CN210836095U (en) 2019-10-15 2019-10-15 Safe mobile storage device capable of being rapidly and physically destroyed and destruction circuit

Country Status (1)

Country Link
CN (1) CN210836095U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112115523A (en) * 2020-09-30 2020-12-22 海南大学 Data self-destruction encryption storage device
CN113076564A (en) * 2021-04-13 2021-07-06 山东北斗云信息技术有限公司 Hard disk protection method, device and equipment based on Beidou positioning and storage medium
CN114077757A (en) * 2020-08-14 2022-02-22 台山市培英职业技术学校 Data security storage device and method
CN116116507A (en) * 2023-04-17 2023-05-16 北京中超伟业信息安全技术股份有限公司 Destroying device and method for encrypting mobile storage equipment

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114077757A (en) * 2020-08-14 2022-02-22 台山市培英职业技术学校 Data security storage device and method
CN114077757B (en) * 2020-08-14 2023-12-19 台山市培英职业技术学校 Data security storage device and method
CN112115523A (en) * 2020-09-30 2020-12-22 海南大学 Data self-destruction encryption storage device
CN113076564A (en) * 2021-04-13 2021-07-06 山东北斗云信息技术有限公司 Hard disk protection method, device and equipment based on Beidou positioning and storage medium
CN116116507A (en) * 2023-04-17 2023-05-16 北京中超伟业信息安全技术股份有限公司 Destroying device and method for encrypting mobile storage equipment

Similar Documents

Publication Publication Date Title
CN210836095U (en) Safe mobile storage device capable of being rapidly and physically destroyed and destruction circuit
US10719751B2 (en) Anti-removal monitoring circuitry, electronic tag, anti-theft system and anti-theft method
CN208421246U (en) A kind of low-power dissipation system based on the positioning of GPS/ Beidou bimodulus
CN101650867A (en) Radioactive source alarming, positioning and tracking system device
CN104527580A (en) Intelligent positioning and tracking system for electric vehicle
CN101706853A (en) Solid state disk (SSD)-based anti-leakage self-destruction system
CN104952184A (en) Bi-directional wireless intelligent door magnetic detector
CN205140102U (en) Two -way wireless Intelligence door magnetic detector
CN203250359U (en) External force destroy proofing monitoring system based on power transmission line
CN105136203A (en) Multifunctional temperature and humidity monitor
CN203250378U (en) Antitheft device of notebook computer
CN112735090A (en) Method, system, storage medium and terminal for old man loss prevention and tumble alarm
CN103297919A (en) System and implementation method for device authorized access control based on compass satellite module
CN204926376U (en) Simulation camera with theftproof function
CN101539394B (en) Intelligent communication cable alarm distance meter and test method thereof
CN208255886U (en) Safe storage device based on BDStar navigation system
CN205210322U (en) Physical geography instrument anti -theft device based on acceleration sensor
CN201616164U (en) Radioactive source alarming, positioning and tracking system device
CN203193738U (en) CDMA-based short message alarm device
CN203288012U (en) An anti-theft warning system device based on wireless communication remote control
CN203305958U (en) Vehicle-mounted terminal with anti-theft function
CN205211078U (en) Open -air physical geography instrument anti -theft device
CN104732656A (en) Alarm system and method for bank card being forgot in ATM
CN204070724U (en) A kind of construction safety helmet based on GPS
US20220164486A1 (en) System and method for remote control of external data storage device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant