CN112350831B

CN112350831B - Network security isolation device

Info

Publication number: CN112350831B
Application number: CN202011181164.0A
Authority: CN
Inventors: 王中华; 苏远辉
Original assignee: Huaneng Jining High Tech Zone Thermal Power Co ltd
Current assignee: Huaneng Jining High Tech Zone Thermal Power Co ltd
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2022-04-15
Anticipated expiration: 2040-10-29
Also published as: CN112350831A

Abstract

The invention provides a network security isolation device, and mainly relates to the technical field of network security. Network safety isolating device, including last casing, be provided with miniature single chip processor in the last casing, one side is provided with detection electric capacity on the miniature single chip processor, miniature single chip processor one end is provided with power supply interface, detection interface respectively, go up casing bottom fixedly connected with lower casing, net twine access mouth, net twine delivery outlet have been seted up respectively to casing one end down, the internal electromagnetic switch device that is provided with of inferior valve. The invention has the beneficial effects that: the computer charges the detection capacitor when a switch key is pressed to generate starting current, the micro single chip processor controls whether the electromagnet works to complete network connection or keep unconnected after acquiring the charging condition of the detection capacitor, and the network cannot be connected when the computer is automatically started after the computer is attacked by Trojan horse virus, so that the situations of data loss and stealing of commercial secrets are avoided.

Description

Network security isolation device

Technical Field

The invention mainly relates to the technical field of network security, in particular to a network security isolation device.

Background

With the rapid development of modern networks, network information security becomes a focus of high importance. If the internal network and internal shared data of each enterprise company are not sufficiently protected by the network, the internal network and internal shared data can be easily attacked to steal the business secret, and the loss is great. Therefore, many companies independently set up independent gateways and IT information security departments to manage the company networks, and the investment is quite large. The Trojan horse virus and the like which can attack or damage a computer system can be timely discovered and processed through security software, security equipment and the like during work, but a network switch is required to be manually disconnected every day to ensure the network security when a company goes off work, and the network is connected during work.

Some existing network isolation devices disconnect the network in time in a mode of automatically pulling out a crystal head when detecting that a computer is attacked so as to prevent virus invasion, and the mode easily causes unstable connection of the crystal head, so that unstable network connection is caused, and the use of a working network is influenced. Therefore, there is a need for a network security isolation device that can protect a computer from being damaged even if the network is not manually disconnected after work.

Disclosure of Invention

In order to solve the defects of the prior art, the invention provides a network safety isolation device which can charge a detection capacitor in the device when a computer presses a switch key to start or restart to generate starting current, a micro single chip processor acquires the charging condition of the detection capacitor and then controls whether an electromagnet works to complete network connection or keep a non-connected state, and the network can not be connected when the computer automatically starts without pressing the switch key after the attack of Trojan viruses, thereby avoiding the occurrence of data loss and the theft of commercial secrets. The mode does not need to pull out and insert the network cable crystal head for multiple times, and can ensure that the network is stable and does not drop during normal use. The arrangement of the supporting legs and the magnets enables the device to be convenient to place, and the device can be adsorbed on a computer shell at a proper position and is convenient to use.

In order to achieve the purpose, the invention is realized by the following technical scheme:

the utility model provides a network security isolating device, includes the casing, be provided with miniature single chip processor in the upper casing, one side is provided with detection electric capacity on the miniature single chip processor, miniature single chip processor one end is provided with power supply interface, detection interface respectively, set up the opening that suits with power supply interface on the outer wall of upper casing one side, set up the opening two that suits with the detection interface on the outer wall of upper casing one side, casing under the fixedly connected with of upper casing bottom, net twine access mouth, net twine delivery outlet have been seted up respectively to casing one end down, the internal electromagnetic switching device that is provided with of lower casing, electromagnetic switching device links to each other with miniature single chip processor electricity.

The electromagnetic switch device comprises an electromagnet, a rocker arm plate, a rocker arm shaft, a contact plate and a spring, wherein the electromagnet is fixedly installed in the lower shell, the rocker arm shaft is fixedly connected to the inner wall of the lower shell, the contact plate is fixedly connected to the inner wall of the lower shell, one end of the rocker arm plate spring is connected with a network cable access contact, the contact plate is connected with a network cable output contact, the rocker arm plate can be adsorbed when the electromagnet is powered on, the other side of the rocker arm plate can overcome the tensile force of the spring and is pressed on the contact plate, and a network enters a communication state.

The upper casing is characterized in that four corners below the upper casing are respectively provided with support legs, magnet blocks are embedded below the support legs, and the height of each support leg is higher than the thickness of the lower casing.

The power supply interface is a USB-A interface, and is connected to a USB-A2.0 interface of the computer by adopting a double USB-A connector connecting line to supply power to the equipment; the detection interface is a round hole interface with a needle, one end of the detection interface is connected with a connecting wire of which one end is a round head plug with a hole and the other end is a needle contact, and the needle contact of the connecting wire is inserted into a connecting plug of the connecting wire between a computer startup and shutdown key and the mainboard.

Compared with the prior art, the invention has the beneficial effects that:

the invention can charge the detection capacitor in the device when the computer presses the power on/off key to start or restart to generate starting current, and the micro single chip processor acquires the charging state of the detection capacitor and then controls whether the electromagnet works to complete the network connection or keep the unconnected state, thereby ensuring that the network cannot be connected when the computer automatically starts without pressing the power on/off key after the Trojan virus attack, and further avoiding the situations of data loss and stealing of commercial secrets. The mode does not need to pull out and insert the network cable crystal head for multiple times, and can ensure that the network is stable and does not drop during normal use. The arrangement of the supporting legs and the magnets enables the device to be convenient to place, and the device can be adsorbed on a computer shell at a proper position and is convenient to use.

Drawings

FIG. 1 is a schematic diagram of a first perspective structure of the present invention;

FIG. 2 is a schematic diagram of a second perspective structure of the present invention;

FIG. 3 is a schematic top view of the present invention;

FIG. 4 is a schematic diagram of the right-view structure of the present invention;

FIG. 5 is a schematic diagram of the micro-singlechip processor structure of the invention;

FIG. 6 is a schematic diagram of the structure of the electromagnetic switching device of the present invention;

FIG. 7 is a schematic view of a dual-hole rectangular joint structure of the present invention;

fig. 8 is a schematic diagram of a double row pin contact structure on a computer motherboard according to the present invention.

Reference numerals shown in the drawings: 1. an upper housing; 2. a micro single-chip processor; 3. detecting the capacitance; 4. a power supply interface; 5. detecting an interface; 6. a first opening; 7. a second opening; 8. a lower housing; 9. a network cable access port; 10. a network cable outlet; 11. an electromagnetic switching device; 20. a support leg; 21. a magnet block; 111. an electromagnet; 112. a rocker arm plate; 113. a rocker shaft; 114. a contact plate; 115. a spring.

Detailed Description

The invention is further described with reference to the accompanying drawings and specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.

Example (b):

with reference to fig. 1-8, a network security isolation device includes an upper housing 1, a micro single chip processor 2 is provided in the upper housing 1, a detection capacitor 3 is provided on one side of the micro single chip processor 2, a power supply interface 4 and a detection interface 5 are provided at one end of the micro single chip processor 2, a first opening 6 corresponding to the power supply interface 4 is provided on an outer wall of one side of the upper housing 1, a second opening 7 corresponding to the detection interface 5 is provided on an outer wall of one side of the upper housing 1, a lower housing 8 is fixedly connected to the bottom of the upper housing 1, a network cable access 9 and a network cable output port 10 are provided at one end of the lower housing 8, an electromagnetic switch device 11 is provided in the lower housing 8, and the electromagnetic switch device 11 is electrically connected to the micro single chip processor 2.

The electromagnetic switch device 11 comprises an electromagnet 111, a rocker arm plate 112, a rocker arm shaft 113, a contact plate 114 and a spring 115, wherein the electromagnet 111 is fixedly installed in the lower shell 8, the rocker arm shaft 113 is fixedly connected to the inner wall of the lower shell 8, the contact plate 114 is fixedly connected to the inner wall of the lower shell 8, one end of the rocker arm plate 114 where the spring 115 is located is connected with a network cable access contact, the contact plate 114 is connected with a network cable output contact, the electromagnet 111 can adsorb the rocker arm plate 112 when being electrified, the other side of the rocker arm plate 112 can overcome the tensile force of the spring 115 and is tightly pressed on the contact plate 114, and a network enters a connected state.

Four corners below the upper casing 1 are respectively provided with a support leg 20, a magnet block 21 is embedded below the support leg 20, and the height of the support leg 20 is higher than the thickness of the lower casing 8. The landing leg is higher than the casing and is convenient for place this equipment down, and the magnet piece sets up and can not influence its work far away apart from micro-singlechip processor at the landing leg end, places this device at computer machine roof portion or quick-witted case side board during the use, and the magnet piece can adsorb automatically and guarantee this equipment and place stably.

The power supply interface 4 is a USB-A interface, and the power supply interface 4 is connected to a USB-A2.0 interface of the computer by adopting a double USB-A connector connecting line to supply power to the equipment; the detection interface 5 is a round hole interface with a needle, the detection interface 5 is internally connected with a connecting wire, one end of the connecting wire is a round head plug with a hole, and the other end of the connecting wire is a needle-shaped contact, and the needle-shaped contact of the connecting wire is inserted into a connecting plug of the connecting wire between a computer on-off key and a mainboard.

The on/off button of a computer generally includes four functions: the computer comprises a Power-on key (Power SW), a Reset key (Reset SW), a hard disk indicator lamp (HDD \ SSD) and a Power indicator lamp (Power LED), wherein four groups of functions are respectively connected with four groups of wires correspondingly, and each group of wires is provided with a double-hole rectangular joint connected with eight needle contacts arranged in a double-row array on a computer mainboard. When the computer is normally started by pressing a startup key or restarted by pressing a restart key, a startup current is generated when a power management module of the computer is communicated with a corresponding contact on a mainboard at the moment of pressing the key, and the computer enters a system after being normally started or restarted. The invention comprises two groups of needle contacts of the detection interface connecting wire, wherein each group comprises an anode contact and a cathode contact, and diodes are respectively arranged on the wires at the front ends of the two groups of contacts which are connected together, so that the unidirectional flow of current is ensured to prevent the conflict of computer startup/restart programs. Two groups of needle-shaped contacts are respectively inserted into a double-hole rectangular connector connected to a computer mainboard, and after connection, when a computer on-off button is pressed to normally start or restart, starting current generated can charge a detection capacitor in the device through a connecting wire of a detection interface while the device is started in a guiding manner. After the computer is started, the USB-A interface supplies power to the device through the double USB-A connector connecting wires, the charging condition of the detection capacitor can be acquired after the micro single-chip processor is electrified, if the detection capacitor is charged, the micro single-chip processor can control the electromagnet to work to connect the network, and meanwhile, the detection capacitor is discharged. After the computer is shut down, the equipment stops working, the electromagnet stops working, the rocker arm plate is separated from the contact plate under the action of the spring tension, and the network is in a position communication state.

When the computer is attacked by Trojan virus, the computer is automatically started under the control of the Trojan virus after a user goes off duty, because the startup and shutdown key is not pressed, no starting current is generated, the detection capacitor cannot be charged, the micro single chip microcomputer processor obtains the information that the detection capacitor is not charged after working, the electromagnet cannot work, and the network is still in a connected state. Even if the computer starts the network and can not be connected, thereby preventing the serious harm such as data loss, business secret stealing and the like.

Claims

1. A network security isolation device comprises an upper shell (1), and is characterized in that: a micro single chip microcomputer processor (2) is arranged in the upper shell (1), a detection capacitor (3) is arranged on one side of the micro single chip microcomputer processor (2), a power supply interface (4) and a detection interface (5) are respectively arranged at one end of the micro single chip microcomputer processor (2), a first opening (6) matched with the power supply interface (4) is formed in the outer wall of one side of the upper shell (1), a second opening (7) matched with the detection interface (5) is formed in the outer wall of one side of the upper shell (1), a lower shell (8) is fixedly connected to the bottom of the upper shell (1), a network cable access port (9) and a network cable output port (10) are respectively formed in one end of the lower shell (8), an electromagnetic switch device (11) is arranged in the lower shell (8), and the electromagnetic switch device (11) is electrically connected with the micro single chip microcomputer processor (2), the power supply interface (4) is a USB-A interface, and the power supply interface (4) is connected to the USB-A2.0 interface of the computer by adopting a double USB-A connector connecting line to supply power to the equipment; the detection interface (5) is a round hole interface with a needle, the detection interface (5) is internally connected with a connecting wire, one end of the connecting wire is a round head plug with a hole, the other end of the connecting wire is a needle contact, the needle contact of the connecting wire is inserted into a connecting plug of the connecting wire between the computer on-off button and the mainboard, after connection, when the computer on-off button is pressed to normally start or restart, the starting current generated can charge the detection capacitor (3) through the connecting wire of the detection interface (5), the charging condition of the detection capacitor (3) can be obtained after the micro single chip processor (2) is electrified, if the detection capacitor (3) is charged, the micro single chip processor (2) can control the electromagnet to work to switch on the network, and simultaneously discharge the detection capacitor (3), the equipment stops working after the computer is shut off, the electromagnet stops working, and the rocker plate is separated from the contact plate under the action of spring tension, the network is in an unconnected state.

2. The network security isolation device of claim 1, wherein: the electromagnetic switch device (11) comprises an electromagnet (111), a rocker arm plate (112), a rocker arm shaft (113), a contact plate (114) and a spring (115), wherein the electromagnet (111) is fixedly installed in the lower shell (8), the rocker arm shaft (113) is fixedly connected to the inner wall of the lower shell (8), the contact plate (114) is fixedly connected to the inner wall of the lower shell (8), one end of the rocker arm plate (114), where the spring (115) is located, is connected with a network cable access contact, the contact plate (114) is connected with a network cable output contact, the electromagnet (111) can adsorb the rocker arm plate (112) when being electrified, the other side of the rocker arm plate (112) can overcome the tensile force of the spring (115) and is pressed on the contact plate (114), and a network enters a communication state.

3. The network security isolation device of claim 1, wherein: four corners below the upper shell (1) are respectively provided with support legs (20), a magnet block (21) is embedded below the support legs (20), and the height of the support legs (20) is higher than the thickness of the lower shell (8).