Electromagnetic shielding device based on physical isolation
By using a physically isolated electromagnetic shielding device, and through the design of a shielding box and lifting platform, the problem of insufficient protection capabilities of virtual firewalls was solved, achieving comprehensive physical isolation and protection of network devices and improving network security protection capabilities.
Patent Information
- Application Number
- CN202520411103.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-03-06
- Estimated Expiration
- 2035-03-11
AI Technical Summary
Traditional network security protection methods rely on virtual firewalls, which face challenges from the upgrading of network technology and the evolution of hacker attack methods, making it difficult to effectively prevent malicious attacks.
Design an electromagnetic shielding device based on physical isolation. Utilize a shielding box and lifting platform, and achieve comprehensive protection of network equipment by wrapping and controlling the shielding mesh, thereby severing the connection between the internal network and the external network.
Upon detecting a malicious attack, a physical isolation mechanism is quickly activated to prevent attackers from further infiltrating and disrupting the network, thereby enhancing the level of network security protection and providing physical collision protection.
Smart Images
Figure CN223978964U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of network security technology, and more specifically, to an electromagnetic shielding device based on physical isolation. Background Technology
[0002] In today's rapidly developing information age, cybersecurity has become an important issue that cannot be ignored by all industries. Physical isolation, as an effective cybersecurity strategy, is based on ensuring that there is no direct or indirect connection between the internal network and the public network, thereby protecting critical hardware such as routers, workstations, and network servers and their communication links from malicious attacks from external networks.
[0003] Traditional network security measures primarily rely on virtual firewall technology, which uses complex rules and policies to filter and block potential threats. However, with the continuous upgrading and iteration of network technology and the ongoing evolution of hacker attack methods, the protective capabilities of virtual firewalls are facing challenges. Therefore, designing a physically isolated electromagnetic shielding device is particularly important for network isolation upon detecting unauthorized attacks. Utility Model Content
[0004] To overcome the above deficiencies, this utility model provides an electromagnetic shielding device based on physical isolation to solve the aforementioned problems.
[0005] This utility model is implemented as follows:
[0006] An electromagnetic shielding device based on physical isolation includes a shielding box. A first shielding mesh is provided on the outer side of the shielding box, and several supporting feet are provided on its bottom. A lifting platform is provided inside the shielding box. The lifting platform includes transmission components symmetrically arranged on the front and rear sides of the inner sidewall of the shielding box. A placement platform is movably arranged between the two transmission components. An opening communicating with the lifting platform is opened at the top of the shielding box. A movable groove is opened from the rear to the front on the sidewall of the opening. A winding component is provided on the rear side of the shielding box near the opening. The winding component moves within the movable groove. A microcontroller is provided on the inner sidewall of the shielding box. The microcontroller is electrically connected to both the transmission components and the winding component. The microcontroller is connected to a host control unit via wires.
[0007] In an embodiment of this utility model, a first crossbar and a second crossbar are respectively provided on the front and rear side walls inside the shielding box. A first fixing seat is provided in the middle of the first crossbar, and a second fixing seat is provided on the side wall of the shielding box near the top of the second crossbar.
[0008] In an embodiment of this utility model, the transmission assembly includes a first drive motor and a first lead screw. The first lead screw is respectively disposed between the first fixed seat and the second fixed seat. The first drive motor is disposed in the middle of the second crossbar, and its output shaft is connected to the first lead screw. A first movable seat is movably disposed on the first lead screw. The side of the first movable seat has a connecting plate extending toward the middle of the shielding box. The first drive motor is communicatively connected to the microcontroller.
[0009] In an embodiment of this utility model, the placement platform is disposed on the two connecting plates. The side of the placement platform near the transmission assembly is provided with sliding seats at both ends. The sides of the first crossbar and the second crossbar are symmetrically provided with two third fixed seats about the center of the first lead screw. A guide rod is provided between the two third fixed seats in the vertical direction. The sliding seats are slidably disposed on the adjacent guide rods.
[0010] In an embodiment of this utility model, a receiving groove is provided at the top center of the placement platform, and a pressure sensor is provided in the receiving groove. The pressure sensor is communicatively connected to the microcontroller.
[0011] In an embodiment of this utility model, the winding device includes a metal roll, a second lead screw, a second drive motor, and a third drive motor. The metal roll includes a spool, the outer side of which is wrapped with a second shielding mesh. The other end of the second shielding mesh is connected to a movable shaft. Both ends of the spool are hinged to the left and right sides of the shielding box, and are located at the rear of the shielding box near the opening of the movable groove. There are two second lead screws, respectively located on the left and right sides of the inner side of the shielding box. The movable shaft is slidably disposed in the movable groove, and its two ends are respectively provided with second movable seats, which are movably disposed on the second lead screws. There are two second drive motors, respectively located on the front side of the inner wall of the shielding box. The output shaft of the second drive motor is provided with a transmission gear, which meshes with the second lead screw. The third drive motor is located on the right side of the inner wall of the shielding box, and its output end is provided with the same transmission gear as the second drive motor, and is hinged to the right end of the spool. The second drive motor and the third drive motor are communicatively connected to the microcontroller.
[0012] In an embodiment of this utility model, the first shielding mesh and the second shielding mesh are made of aluminum.
[0013] The beneficial effects of this utility model are as follows: This device achieves comprehensive protection of network equipment through the all-round enclosure of the shielded box and the control of the internal lifting platform. When the upper terminal detects a malicious attack, it can quickly activate the physical isolation mechanism. At this time, the microcontroller first controls the first drive motor to rotate, which in turn causes the placement platform to move downward with the rotation of the first lead screw, completely lowering the network equipment into the shielded box. At the same time, it controls the second drive motor and the third drive motor to rotate, covering the opening with the second shielding net, thereby enclosing the network equipment and cutting off the connection between the internal network and the external network, thus effectively preventing attackers from further infiltrating and damaging it. At the same time, enclosing it in the shielded box can also provide a certain degree of protection against physical collisions. Attached Figure Description
[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0015] Figure 1 A schematic diagram of the overall structure provided for the embodiments of this utility model;
[0016] Figure 2 A schematic cross-sectional view of the overall structure provided for the embodiments of this utility model;
[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0018] Figure 4 A schematic diagram of the structure of the first movable seat provided for an embodiment of this utility model;
[0019] Figure 5 A communication block diagram provided for embodiments of this utility model.
[0020] In the diagram: 10. Shielding box; 11. Support leg; 12. Opening; 1201. Movable slot; 13. First crossbar; 14. Second crossbar; 15. First shielding mesh; 20. Lifting platform; 21. Placement platform; 2101. Receiving slot; 2102. Pressure sensor; 22. Transmission assembly; 2201. First lead screw; 2202. First drive motor; 2203. Guide rod; 2204. First fixed seat; 2205. Second fixed seat; 2206. First movable seat; 2207. Third fixed seat; 30. Winding assembly; 31. Metal roll; 3101. Roll; 3102. Second shielding mesh; 3103. Moving shaft; 31031. Second movable seat; 32. Second lead screw; 33. Second drive motor; 34. Third drive motor; 40. Microcontroller; 50. Network device. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0023] like Figure 1-2As shown, this utility model provides an electromagnetic shielding device based on physical isolation, including a shielding box 10. A first shielding mesh 15 is provided on the outer side of the shielding box 10, and several supporting feet 11 are provided on its bottom. A lifting platform 20 is provided inside the shielding box 10. The lifting platform 20 includes transmission components 22 symmetrically arranged on the front and rear sides of the inner wall of the shielding box 10. A placement platform 21 is movably arranged between the two transmission components 22. An opening 12 communicating with the lifting platform 20 is opened on the top of the shielding box 10. A movable groove 1201 is opened from the rear to the front on the side wall of the opening 12. A winding assembly 30 is provided on the rear side of the shielding box 10 near the opening 12. The device 30 moves within the movable slot 1201. A microcontroller 40 is installed on the inner wall of the shielding box 10. The microcontroller 40 is electrically connected to the transmission assembly 22 and the winding assembly 30, respectively. The microcontroller 40 is connected to the upper control unit via wires. The network device 50 is protected by a box covered with shielding material. During normal use, the device is raised to the top of the device via the lifting platform 20 and used as a base. When the upper terminal detects an abnormality, it controls the device to wrap the network device 50 with wired signal transmission. The shielding material is used to disconnect the connection with the external network, thereby achieving the function of protecting it.
[0024] like Figure 2 and 4 As shown, a first crossbar 13 and a second crossbar 14 are respectively provided on the front and rear side walls inside the shielding box 10. A first fixing seat 2204 is provided in the middle of the first crossbar 13, and a second fixing seat 2205 is provided on the side wall of the shielding box 10 near the top of the second crossbar 14.
[0025] Furthermore, the transmission assembly 22 includes a first drive motor 2202 and a first lead screw 2201. The first lead screw 2201 is respectively disposed between the first fixed seat 2204 and the second fixed seat 2205. The first drive motor 2202 is disposed in the middle of the second crossbar 14, and its output shaft is connected to the first lead screw 2201. A first movable seat 2206 is movably disposed on the first lead screw 2201. The side of the first movable seat 2206 has a connecting plate extending toward the middle of the shielding box 10. The first drive motor 2202 is communicatively connected to the microcontroller 40. The placement platform 21 is disposed on the two connecting plates. In order to make the placement platform 21... 1. To improve the stability of sliding, a guide rod 2203 is added to the transmission assembly 22. Specifically, the placement platform 21 is set on two connecting plates. The side of the placement platform 21 near the transmission assembly 22 is provided with sliding seats at both ends. The sides of the first crossbar 13 and the second crossbar 14 are symmetrically arranged with the first lead screw 2201 as the center. A guide rod 2203 is respectively arranged between the two third fixed seats 2207 in the vertical direction. The sliding seats are slidably arranged on the adjacent guide rods 2203. The stable lifting and lowering of the placement platform 21 is achieved by the two sets of transmission assemblies 22 symmetrically arranged on both sides inside the shielding box 10.
[0026] As a preferred embodiment, such as Figure 3 As shown, a receiving groove 2101 is provided at the top center of the placement platform 21. A pressure sensor 2102 is installed in the receiving groove 2101. The pressure sensor 2102 is connected to the microcontroller 40. The pressure sensor 2102 can dynamically determine whether there is a network device 50 on the placement platform. Based on this information, an automated instruction is formed. That is, when there is no network device 50 (the network device 50 is picked up), the lifting platform 20 rises to the top, and the rewinding assembly 30 is completely retracted, so as to wait for the next direct use.
[0027] In this embodiment, the winding device includes a metal roll 31, a second lead screw 32, a second drive motor 33, and a third drive motor 34. The metal roll 31 includes a shaft 3101, and a second shielding mesh 3102 is wrapped around the outside of the shaft 3101. The other end of the second shielding mesh 3102 is connected to a movable shaft 3103. The two ends of the shaft 3101 are hinged to the left and right sides of the shielding box 10, and it is located at the rear of the shielding box 10 near the opening of the movable slot 1201. There are two second lead screws 32, which are respectively arranged on the left and right sides inside the shielding box 10. The movable shaft 3103 is slidably arranged in the movable slot 1201, and its two ends are respectively provided with second movable seats 31031. The second movable seats 31031 are movably arranged on the second lead screw 32. There are two drive motors 33, which are respectively set on the front side of the inner wall of the shielding box 10. The output shaft of the second drive motor 33 is equipped with a transmission gear, which meshes with the second lead screw 32. The third drive motor 34 is set on the right side of the inner wall of the shielding box 10. Its output end is equipped with the same transmission gear as the second drive motor 33, and is hinged to the right end of the reel 3101. The second drive motor 33 and the third drive motor 34 are connected to the microcontroller 40. That is, when running, the second drive motor 33 and the first drive motor 2202 start together, so that the moving shaft 3103 moves in the length direction of the two second lead screws 32, thereby realizing the opening and closing of the second shielding mesh 3102 at the movable slot 1201 of the opening 12.
[0028] As a preferred embodiment, the first shielding mesh 15 and the second shielding mesh 3102 are made of aluminum, which has a better shielding effect and a lower support cost.
[0029] Specifically, the working principle of this electromagnetic shielding device based on physical isolation is as follows: When the pressure sensor 2102 does not detect the presence of network device 50, the microcontroller 40 controls the first drive motor 2202 to move the placement platform 21 to the top, and simultaneously controls the second drive motor 33 to completely retract the metal roll 31 on the winding assembly 30, putting the placement platform 21 in a ready-to-use state. For actual use, the network device 50 is placed on the placement platform 21. At this time, the pressure sensor 2102 detects pressure, indicating that the shielding box 10 is in working condition. When the upper terminal detects a malicious attack, it sends a command to the microcontroller 40 via wired transmission. The microcontroller 40 then first controls the first drive motor 2202 to rotate... When the first lead screw 2201 rotates, the placement platform 21 moves downward, completely lowering the network device 50 into the shielding box 10. At the same time, the second drive motor 33 and the third drive motor 34 are controlled to rotate, thereby covering the opening 12 with the second shielding net 3102, thus enclosing the network device 50 and physically isolating it from external signals. With this device, when an illegal attack is detected, a physical isolation mechanism can be quickly activated to cut off the wireless connection between the internal network and the external network, thereby effectively preventing attackers from further infiltrating and damaging the network. This network security monitoring device based on physical isolation not only improves the protection level of network security, but also provides a new solution for dealing with increasingly complex network security threats.
[0030] It should be noted that the specific models and specifications of the pressure sensor 2102, the first drive motor 2202, the second drive motor 33, the third drive motor 34, and the microcontroller 40 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.
[0031] The power supply and operating principle of the pressure sensor 2102, the first drive motor 2202, the second drive motor 33, the third drive motor 34 and the microcontroller 40 are clear to those skilled in the art and will not be described in detail here.
[0032] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.
Claims
1. A physical isolation based electromagnetic shielding device, characterized in that, The utility model provides a shielding box, the outside of shielding box (10) is provided with first shielding net (15), is provided with a plurality of support foot (11) at the bottom of shielding box (10), the inside of shielding box (10) is provided with lifting platform (20), lifting platform (20) includes drive assembly (22) that is symmetrically arranged in the inside wall of shielding box (10) front and back, and the movable setting of placing table (21) is arranged between two drive assembly (22), the top of shielding box (10) is provided with the opening portion (12) of the communication of lifting platform (20), the side wall of opening portion (12) is provided with movable slot (1201) from rear side to front, the rear side of shielding box (10) is provided with winding assembly (30) near the side of opening portion (12), winding assembly (30) moves in movable slot (1201), the inside wall of shielding box (10) is provided with microcontroller (40), microcontroller (40) is electrically connected with drive assembly (22) and winding assembly (30) respectively, and microcontroller (40) is connected with upper control unit through wire.
2. A physical separation based electromagnetic shielding device according to claim 1, wherein, The inside front and back walls of the shielding box (10) are respectively provided with a first horizontal rod (13) and a second horizontal rod (14), the middle part of the first horizontal rod (13) is provided with a first fixing seat (2204), and the side wall of the shielding box (10) is provided with a second fixing seat (2205) near the upper part of the second horizontal rod (14).
3. A physical separation based electromagnetic shielding device according to claim 2, wherein, The drive assembly (22) comprises a first drive motor (2202) and a first screw rod (2201), the first screw rod (2201) is arranged between the first fixing seat (2204) and the second fixing seat (2205), the first drive motor (2202) is arranged in the middle part of the second horizontal rod (14), the output shaft of the first drive motor (2202) is connected with the first screw rod (2201), the first screw rod (2201) is movably provided with a first movable seat (2206), the side surface of the first movable seat (2206) has a connecting plate extending to the middle part of the shielding box (10), and the first drive motor (2202) is in communication connection with the microcontroller (40).
4. The physically-isolated electromagnetic shielding device of claim 3, wherein, The placing table (21) is arranged on the two connecting plates, and the side of the placing table (21) close to the drive assembly (22) is provided with a sliding seat at both ends. The side surfaces of the first horizontal rod (13) and the second horizontal rod (14) are symmetrically provided with two third fixing seats (2207) with the first screw rod (2201) as the center. The two third fixing seats (2207) in the vertical direction are respectively provided with guide rods (2203), and the sliding seat is slidably arranged on the adjacent guide rods (2203).
5. A physical separation based electromagnetic shielding device according to any of claims 1 or 4, c h a r a c t e r i z e d i n that The top center of the placing table (21) is provided with a receiving groove (2101), and the receiving groove (2101) is provided with a pressure sensor (2102). The pressure sensor (2102) is in communication connection with the microcontroller (40).
6. The physically-isolated electromagnetic shielding device of claim 1, wherein, The winding device comprises a metal roll (31), a second screw rod (32), a second driving motor (33) and a third driving motor (34), the metal roll (31) comprises a roll shaft (3101), the outer side of the roll shaft (3101) is wrapped with a second shielding net (3102), the other end of the second shielding net (3102) is connected with a moving shaft (3103), the two ends of the roll shaft (3101) are hinged on the left and right sides of the shielding box (10), and the roll shaft (3101) is located at the slot opening of the shielding box (10) close to the movable slot (1201) at the rear, the second screw rod (32) has two, which are respectively arranged on the left and right sides of the inner side of the shielding box (10), the moving shaft (3103) is slidingly arranged in the movable slot (1201), and the two ends of the moving shaft (3103) are respectively provided with a second movable seat (31031), the second movable seat (31031) is movably arranged on the second screw rod (32), the second driving motor (33) has two, which are respectively arranged on the inner side wall of the shielding box (10) on the front side, a transmission gear is arranged on the output shaft of the second driving motor (33), the transmission gear is meshed with the second screw rod (32), the third driving motor (34) is arranged on the inner side wall of the shielding box (10) on the right side, the output end of the third driving motor (34) is provided with the transmission gear same as the second driving motor (33), and the right end of the roll shaft (3101) is hinged, the second driving motor (33) and the third driving motor (34) are in communication connection with the microcontroller (40).
7. A physical separation based electromagnetic shielding device according to claim 6, wherein, The material of the first shielding net (15) and the second shielding net (3102) is aluminum.