CN110955878A - Industrial computer information safety processing device - Google Patents

Industrial computer information safety processing device Download PDF

Info

Publication number
CN110955878A
CN110955878A CN201911196102.4A CN201911196102A CN110955878A CN 110955878 A CN110955878 A CN 110955878A CN 201911196102 A CN201911196102 A CN 201911196102A CN 110955878 A CN110955878 A CN 110955878A
Authority
CN
China
Prior art keywords
hard disk
computer case
computer
fixedly installed
processing device
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.)
Granted
Application number
CN201911196102.4A
Other languages
Chinese (zh)
Other versions
CN110955878B (en
Inventor
刘丽
王九如
张问银
武传坤
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.)
Linyi University
Original Assignee
Linyi University
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 Linyi University filed Critical Linyi University
Priority to CN201911196102.4A priority Critical patent/CN110955878B/en
Publication of CN110955878A publication Critical patent/CN110955878A/en
Application granted granted Critical
Publication of CN110955878B publication Critical patent/CN110955878B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31User authentication
    • G06F21/32User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
    • 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
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00Energy efficient computing, e.g. low power processors, power management or thermal management

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Software Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Storage Device Security (AREA)

Abstract

The invention relates to the technical field of computer safety, and discloses an industrial computer information safety processing device which comprises a base, wherein a computer case is fixedly installed at the top of the base, a switching key hole is fixedly installed on the front surface of the computer case, and a USB (universal serial bus) socket is fixedly installed on the front surface of the computer case, which is positioned below the switching key hole. This industry computer information safety processing apparatus, make the cooperation that gets into this industry computer through setting up camera and operating panel and fingerprint identification device make and need three people at least to operate and then avoid certain person to enter into the operation page of computer and copy data when getting into the operation page of this industry computer, and then make people supervise each other, cooperation through controller and electromagnetic pole and solenoid makes direct action break away from the off-line of guaranteeing the hard disk with the SATA interface on interface and the mainboard when detecting illegal data copy and guarantee the safety of data.

Description

Industrial computer information safety processing device
Technical Field
The invention relates to the technical field of computer security, in particular to an industrial computer information security processing device.
Background
The most important of computer security is the security of stored data, and the main threats facing the security include: computer virus, illegal access, computer electromagnetic radiation, hardware damage and the like, wherein the computer virus is a hidden small program attached in computer software and is the same as other working programs of a computer, but can damage normal programs and data files, and the malignant virus can crash the whole computer software system and completely destroy data.
The information security of the currently used industrial computer is not threatened all the time in the using process, and the currently used industrial computer is generally protected in the aspect of software, however, the method is enough for some threats with insufficient strength, but cannot be protected when directly copying or providing a relatively strong attack, and cannot be protected when some directly copying, so that a relatively external hardware device is required to protect the information data.
Disclosure of Invention
The invention provides an industrial computer information safety processing device which has the advantages that a plurality of persons are required to unlock the industrial computer at the same time, a hard disk is provided with a special power supply device to automatically perform power-off protection on the hard disk when illegal copying occurs, and a hard disk connecting line can be automatically cut off under an emergency condition so as to ensure the disconnection of data and a mainboard, and the problems mentioned in the background technology are solved.
The invention provides the following technical scheme: an industrial computer information security processing device comprises a base, wherein a computer case is fixedly installed at the top of the base, a switching key hole is fixedly installed on the front of the computer case, a USB socket is fixedly installed on the front of the computer case below the switching key hole, a network socket is fixedly installed on the front of the computer case below the USB socket, a state display panel is fixedly installed on the front of the computer case on the right side of the switching key hole, an indicator lamp is fixedly installed on the front of the state display panel, an operation panel is fixedly installed on the front of the computer case on the lower side of the state display panel, a fingerprint identification device is fixedly installed on the front of the operation panel, a dongle device is movably inserted on the left side of the computer case, a camera is fixedly installed at the top of the computer case, and a power supply device is fixedly installed on the left side of an inner cavity of the computer case, the front of computer machine incasement chamber is located power supply unit's top fixed mounting has the network hard disk, the front of computer machine incasement chamber is located the top fixed mounting of network hard disk and has encrypted hard disk, the front of computer machine incasement chamber is located encrypted hard disk's right side fixed mounting has the mainboard, the right side fixed mounting of mainboard has network interface management module, the left surface fixed mounting of mainboard has the SATA interface, the top fixed mounting of computer machine incasement chamber has the controller, the right side fixed mounting of computer machine incasement chamber has the hardware to prevent hot wall, the below fixed mounting that the right side of computer machine incasement chamber is located the hardware and prevents the data copy module, the bottom fixed mounting of computer machine incasement chamber has radiator fan.
Preferably, an independent power supply device is fixedly mounted above the power supply device, and the other end of the independent power supply device is fixedly connected with the bottom of the network hard disk.
Preferably, the top of the network hard disk is fixedly connected with a hard disk switching device, and the top of the hard disk switching device is fixedly connected with the bottom of the encrypted hard disk.
Preferably, the right side fixedly connected with data connecting wire of encryption hard disk, the interface of the other end fixedly connected with of data connecting wire and SATA interface looks joint, the side fixedly connected with connecting rod of interface, the other end fixedly connected with connecting seat of connecting rod, the inside fixed mounting of connecting seat has solenoid, solenoid's inside movable mounting has the electromagnetic pole, the other end fixedly connected with of electromagnetic pole extends to the push rod in the connecting seat outside.
Preferably, the controller is electrically connected with the hard disk switching device, the switching key hole and the network interface management module.
Preferably, the number of the indicator lights is three, and the three indicator lights are respectively a working indicator light, a hard disk indicator light and a network safety indicator light.
Preferably, a processor, a memory bank, a display card device and the like are fixedly mounted on the side surface of the main board.
Preferably, the number of the connecting seats is two, and the two connecting seats are symmetrically distributed by taking the central line of the inserting port as a symmetry axis.
The invention has the following beneficial effects:
1. this industrial computer information safety processing apparatus makes the cooperation that gets into this industrial computer through setting up camera and operating panel and fingerprint identification device and needs three people at least to operate and then avoids certain person to enter into the operating page of computer and copy data when getting into the operating page of this industrial computer, and then makes people supervise each other.
2. This industry computer information security processing apparatus makes people need use the key to switch over the hard disk access of difference and then guarantees that the device looks over the data of different hard disks under the service behavior of difference and guarantees that encryption hard disk can not added external network through setting up the cooperation of switching key hole and hard disk auto-change over device and network interface management module.
3. This industry computer information security processing apparatus, prevent data copy module and hardware and prevent the safety that hot wall can guarantee the network hard disk, carry out independent power supply and then make when detecting the condition that has the invasion copy automatically to the hard disk through setting up special independent power supply unit and carry out automatic cutout with the power of hard disk, cooperation through controller and electromagnetic pole and solenoid makes direct action break away from the off-line of guaranteeing the hard disk with the SATA interface on interface and the mainboard when detecting illegal data copy and guarantee the safety of data.
Drawings
FIG. 1 is a front view of the structure of the present invention;
FIG. 2 is a cross-sectional view of the structure of the present invention;
FIG. 3 is an enlarged view of the point A in FIG. 2.
In the figure: 1. a base; 2. a fingerprint recognition device; 3. an operation panel; 4. a computer case; 5. a status display panel; 6. an indicator light; 7. a camera; 8. a dongle device; 9. switching the key hole; 10. a USB socket; 11. a network socket; 12. a heat radiation fan; 13. a data copy prevention module; 14. a hardware firewall; 15. a controller; 16. a network interface management module; 17. a main board; 18. an SATA interface; 19. encrypting the hard disk; 20. a hard disk switching device; 21. a network hard disk; 22. an independent power supply device; 23. a power supply device; 24. a push rod; 25. an electromagnetic rod; 26. an electromagnetic coil; 27. a connecting rod; 28. a data link; 29. an interface; 30. a connecting seat.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, an industrial computer information security processing apparatus includes a base 1, a computer case 4 fixedly mounted on the top of the base 1, a switching keyhole 9 fixedly mounted on the front of the computer case 4, a USB socket 10 fixedly mounted on the front of the computer case 4 below the switching keyhole 9, a network socket 11 fixedly mounted on the front of the computer case 4 below the USB socket 10, a status display panel 5 fixedly mounted on the front of the computer case 4 on the right side of the switching keyhole 9, indicator lamps 6 fixedly mounted on the front of the status display panel 5, three indicator lamps 6 respectively being a work indicator lamp, a hard disk indicator lamp and a network security indicator lamp, an operation panel 3 fixedly mounted on the front of the status display panel 5 on the front of the computer case 4, a fingerprint identification device 2 fixedly mounted on the front of the operation panel 3, the left side of the computer case 4 is movably inserted with a dongle device 8, the top of the computer case 4 is fixedly provided with a camera 7, the operation panel 3 and the fingerprint identification device 2 are matched to ensure that at least three persons are required to operate when entering the operation page of the industrial computer, thereby preventing a certain person from entering the operation page of the computer to copy data, and further ensuring that people supervise each other, the left side of the inner cavity of the computer case 4 is fixedly provided with a power supply device 23, the front of the inner cavity of the computer case 4 is positioned above the power supply device 23 and is fixedly provided with a network hard disk 21, an independent power supply device 22 is fixedly arranged above the power supply device 23, the other end of the independent power supply device 22 is fixedly connected with the bottom of the network hard disk 21, the special independent power supply device 22 is arranged to independently supply power to the hard disk, thereby automatically cutting off the power supply of the hard disk when the copying condition is detected, the front of the inner cavity of the computer case 4 is fixedly provided with an encrypted hard disk 19 above a network hard disk 21, the top of the network hard disk 21 is fixedly connected with a hard disk switching device 20, the top of the hard disk switching device 20 is fixedly connected with the bottom of the encrypted hard disk 19, the right side of the encrypted hard disk 19 is fixedly connected with a data connecting wire 28, the other end of the data connecting wire 28 is fixedly connected with a socket 29 clamped with an SATA interface 18, the side of the socket 29 is fixedly connected with a connecting rod 27, the other end of the connecting rod 27 is fixedly connected with a connecting seat 30, an electromagnetic coil 26 is fixedly arranged inside the connecting seat 30, an electromagnetic rod 25 is movably arranged inside the electromagnetic coil 26, the other end of the electromagnetic rod 25 is fixedly connected with a push rod 24 extending to the outer side of the connecting seat 30, and the socket is directly operated to be separated from the SATA interface 18 on a mainboard 17 by matching of a controller 15, the The data security is ensured, the number of the connecting seats 30 is two, the two connecting seats 30 are symmetrically distributed by taking the center line of the plug port 29 as a symmetry axis, the two push rods 24 are enabled to be pulled out horizontally when acting on the mainboard 17 by the arrangement of the two connecting seats 30, so that the situation that the plug port 29 cannot be pulled out due to inclination is prevented, the mainboard 17 is fixedly installed on the right side of the inner cavity of the computer case 4 on the front side of the encrypted hard disk 19, a processor, a memory bar, a display card device and the like are fixedly installed on the side surface of the mainboard 17, a network interface management module 16 is fixedly installed on the right side of the mainboard 17, an SATA interface 18 is fixedly installed on the left side surface of the mainboard 17, a controller 15 is fixedly installed on the top of the inner cavity of the computer case 4, the controller 15 is electrically connected with the hard disk switching device 20 and the switching key hole 9 and the network interface management module 16, and the key hole 9 and the The key is switched to different hard disk accesses to ensure that the device checks data of different hard disks under different use conditions, thereby ensuring that the encrypted hard disk 19 cannot be added into an external network, a hardware firewall 14 is fixedly arranged on the right side surface of the inner cavity of the computer case 4, a data copy prevention module 13 is fixedly arranged below the hardware firewall 14 on the right side surface of the inner cavity of the computer case 4, the safety of the network hard disk can be ensured through the data copy prevention module 13 and the hardware firewall 14, and a cooling fan 12 is fixedly arranged at the bottom of the inner cavity of the computer case 4.
The working principle is that when the intelligent hard disk copying device is used, three persons are required to simultaneously connect the dongle device 8 with the computer case 4, the face is identified by using the password and the camera 7 and the fingerprint is identified by using the fingerprint identification device 2, when hard disk data in the encrypted hard disk 19 needs to be copied, the key is required to operate the switching key hole 9, the hard disk switching device 20 is controlled by the controller 15 to connect the encrypted hard disk 19 to the mainboard 17, the network interface management module 16 switches the network interface to intranet connection at the moment, the independent power supply device 22 stops supplying power to the hard disk when the data copying module 13 and the hardware firewall 14 detect that illegal invasion exists, when someone copies the data by using an unauthenticated flash disk or a mobile hard disk, the controller 15 controls the electromagnetic coil 26 to be electrified at the moment, the electromagnetic rod 25 acts under the action of the magnetic force, and the push rod 24 acts on the main disk The socket 29 is separated from the SATA interface 18 on the board 17, so that the hard disk is separated from the main board 17, and the data of the hard disk 19 is encrypted.
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.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. An industrial computer information security processing device, includes base (1), its characterized in that: the intelligent alarm device is characterized in that a computer case (4) is fixedly installed at the top of the base (1), a switching key hole (9) is fixedly installed on the front of the computer case (4), a USB socket (10) is fixedly installed on the front of the computer case (4) below the switching key hole (9), a network socket (11) is fixedly installed on the front of the computer case (4) below the USB socket (10), a state display panel (5) is fixedly installed on the front of the computer case (4) on the right side of the switching key hole (9), an indicator lamp (6) is fixedly installed on the front of the state display panel (5), an operation panel (3) is fixedly installed on the front of the computer case (4) below the state display panel (5), a fingerprint identification device (2) is fixedly installed on the front of the operation panel (3), and a dongle device (8) is movably inserted on the left side of the computer case (4), the top of the computer case (4) is fixedly provided with a camera (7), the left side surface of the inner cavity of the computer case (4) is fixedly provided with a power supply device (23), the front of the inner cavity of the computer case (4) is positioned above the power supply device (23) and is fixedly provided with a network hard disk (21), the front of the inner cavity of the computer case (4) is positioned above the network hard disk (21) and is fixedly provided with an encrypted hard disk (19), the front of the inner cavity of the computer case (4) is positioned on the right side of the encrypted hard disk (19) and is fixedly provided with a mainboard (17), the right side of the mainboard (17) is fixedly provided with a network interface management module (16), the left side surface of the mainboard (17) is fixedly provided with a SATA interface (18), the top of the inner cavity of the computer case (4) is fixedly provided with a controller (15), and the right side, the right side surface of the inner cavity of the computer case (4) is positioned below the hardware firewall (14) and is fixedly provided with a data copy prevention module (13), and the bottom of the inner cavity of the computer case (4) is fixedly provided with a cooling fan (12).
2. The industrial computer information security processing device of claim 1, wherein: an independent power supply device (22) is fixedly mounted above the power supply device (23), and the other end of the independent power supply device (22) is fixedly connected with the bottom of the network hard disk (21).
3. The industrial computer information security processing device of claim 1, wherein: the top of the network hard disk (21) is fixedly connected with a hard disk switching device (20), and the top of the hard disk switching device (20) is fixedly connected with the bottom of the encryption hard disk (19).
4. The industrial computer information security processing device of claim 1, wherein: right flank fixedly connected with data connection line (28) of encryption hard disk (19), interface (29) of the other end fixedly connected with of data connection line (28) and SATA interface (18) looks joint, side fixedly connected with connecting rod (27) of interface (29), the other end fixedly connected with connecting seat (30) of connecting rod (27), the inside fixed mounting of connecting seat (30) has solenoid (26), the inside movable mounting of solenoid (26) has electromagnetic pole (25), the other end fixedly connected with of electromagnetic pole (25) extends to push rod (24) in the connecting seat (30) outside.
5. The industrial computer information security processing device of claim 3, wherein: the controller (15) is electrically connected with the hard disk switching device (20), the switching key hole (9) and the network interface management module (16).
6. The industrial computer information security processing device of claim 1, wherein: the number of the indicating lamps (6) is three, and the three indicating lamps are respectively a working indicating lamp, a hard disk indicating lamp and a network safety indicating lamp.
7. The industrial computer information security processing device of claim 1, wherein: and a processor, a memory bar, a display card device and the like are fixedly arranged on the side surface of the main board (17).
8. The industrial computer information security processing device of claim 4, wherein: the number of the connecting seats (30) is two, and the two connecting seats (30) are symmetrically distributed by taking the central line of the plug interface (29) as a symmetry axis.
CN201911196102.4A 2019-11-29 2019-11-29 Industrial computer information safety processing device Active CN110955878B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911196102.4A CN110955878B (en) 2019-11-29 2019-11-29 Industrial computer information safety processing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911196102.4A CN110955878B (en) 2019-11-29 2019-11-29 Industrial computer information safety processing device

Publications (2)

Publication Number Publication Date
CN110955878A true CN110955878A (en) 2020-04-03
CN110955878B CN110955878B (en) 2023-05-02

Family

ID=69978883

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911196102.4A Active CN110955878B (en) 2019-11-29 2019-11-29 Industrial computer information safety processing device

Country Status (1)

Country Link
CN (1) CN110955878B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113225950A (en) * 2021-04-30 2021-08-06 南京林业大学 Computer network safety device with location structure

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100185843A1 (en) * 2009-01-20 2010-07-22 Microsoft Corporation Hardware encrypting storage device with physically separable key storage device
CN205721797U (en) * 2016-04-05 2016-11-23 张锐 A kind of novel computer information safe device
US20170373851A1 (en) * 2015-12-18 2017-12-28 Shenzhen Zhenhua Microelectronics Co., Ltd Computer security locks having separate key pairs
WO2018090213A1 (en) * 2016-11-15 2018-05-24 深圳天下知网络科技有限公司 Computer-based encryption and decryption system and encryption and decryption method
CN108460267A (en) * 2017-12-28 2018-08-28 广州华夏职业学院 A kind of teaching computer network information safety device
CN208141381U (en) * 2018-05-03 2018-11-23 云南经济管理学院 Computer information safe managing device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100185843A1 (en) * 2009-01-20 2010-07-22 Microsoft Corporation Hardware encrypting storage device with physically separable key storage device
US20170373851A1 (en) * 2015-12-18 2017-12-28 Shenzhen Zhenhua Microelectronics Co., Ltd Computer security locks having separate key pairs
CN205721797U (en) * 2016-04-05 2016-11-23 张锐 A kind of novel computer information safe device
WO2018090213A1 (en) * 2016-11-15 2018-05-24 深圳天下知网络科技有限公司 Computer-based encryption and decryption system and encryption and decryption method
CN108460267A (en) * 2017-12-28 2018-08-28 广州华夏职业学院 A kind of teaching computer network information safety device
CN208141381U (en) * 2018-05-03 2018-11-23 云南经济管理学院 Computer information safe managing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113225950A (en) * 2021-04-30 2021-08-06 南京林业大学 Computer network safety device with location structure

Also Published As

Publication number Publication date
CN110955878B (en) 2023-05-02

Similar Documents

Publication Publication Date Title
US10460132B2 (en) Security keys associated with identification of physical USB protection devices
RU2764292C1 (en) Protection apparatus of an external terminal and protection system
US6026492A (en) Computer system and method to disable same when network cable is removed
US20090293136A1 (en) Security system to prevent tampering with a server blade
US20100277866A1 (en) Server system with security device and method of controlling thereof
CN110955878A (en) Industrial computer information safety processing device
US20240338469A1 (en) Method, Apparatus and External Protection Device for Power-off Monitoring
CN116802634A (en) Leuch software mitigation system and method for mitigating Leuch software attacks
CN213241156U (en) Equipment for preventing virus from invading computer
CN103870765A (en) USB (Universal Serial Bus) security lock and method for protecting data by using USB security lock
CN109035535A (en) A kind of novel intelligent face recognition door control system
US20200226293A1 (en) Anti-Tampering Switch for Electronic Access Control Readers
CN109325346A (en) A kind of intrusion detection method based on linux system
CN112714107B (en) Terminal single-path intelligent port lock and system and control method thereof
CN111885179B (en) External terminal protection device and protection system based on file monitoring service
KR101646965B1 (en) Computer having enhanced security function and computer security system using the same
KR100651611B1 (en) Safe control method when detecting the access to storage media
CN211720855U (en) Novel special storage of software engineering device
CN111859473A (en) External terminal protection equipment and protection system based on space detection
CN111859434A (en) External terminal protection device and protection system for providing confidential file transmission
CN206523956U (en) Paper money supplying module and ATM with intrusion detection feature
CN109614796A (en) Network security system
CN210327635U (en) Network security isolation device based on power grid system
CN218273611U (en) Alarm device for safety
CN215867719U (en) Storage server for reading deleted data

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant