CN216565179U - Hundred-million visible light one-way network card of PCIe interface - Google Patents
Hundred-million visible light one-way network card of PCIe interface Download PDFInfo
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- CN216565179U CN216565179U CN202121420054.5U CN202121420054U CN216565179U CN 216565179 U CN216565179 U CN 216565179U CN 202121420054 U CN202121420054 U CN 202121420054U CN 216565179 U CN216565179 U CN 216565179U
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Abstract
The utility model discloses a hundred-million visible light one-way network card of a PCIe interface, which comprises a transmitting card and a receiving card, wherein PCIe golden fingers, a network controller and a power module are arranged in the transmitting card and the receiving card respectively; the utility model solves the problem of insufficient physical isolation caused by bidirectional transmission on a physical layer in the field of Ethernet networking in the field of information security, and the designed visible light unidirectional network card has no cable or optical cable connection, can realize the one-way communication of the Ethernet at the hundred-million rate and aims to solve the problem of network physical isolation among different platforms.
Description
Technical Field
The utility model relates to the technical field of information security, in particular to a hundred-million visible light one-way network card of a PCIe interface.
Background
The networking technology of enterprise is mainly based on ethernet (IEEE802.3 standard), and the ethernet (IEEE802.3 standard) specifies a plurality of physical connection modes, which can be simply classified into two types, copper twisted pair and optical fiber. The copper twisted pair has an electrical connection relation; optical fibers isolate electrical connections, but bi-directional transmission of light still exists. Data transmission in these physical connections is bidirectional and uncontrollable, and the security of information in data transmission cannot be ensured. In a confidential network, a high-security level network is not allowed to send out any information to the outside, so that the requirement of physical isolation in the field of information security cannot be met due to the connection of a copper twisted pair and an optical fiber Ethernet. The visible light communication technology does not need cable connection, has the characteristics of high directivity and high bandwidth, and can be used for realizing physical unidirectional link of the Ethernet. Therefore, the hundred-million visible light one-way network card of the PCIe interface is designed to solve the problem of insufficient physical isolation caused by the two-way transmission of the physical layer in the Ethernet networking of the existing information security field.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model aims to provide a hundred-million visible light unidirectional network card of a PCIe interface.
The technical scheme adopted by the utility model for solving the technical problems is as follows: the hundred-million visible light one-way network card comprises a transmitting card and a receiving card, wherein PCIe gold fingers, a network controller and a power module are arranged in the transmitting card and the receiving card, a hundred-million transmitting circuit and an LED are further arranged in the transmitting card and used for converting a modulated electric signal of a first host computer into a visible light signal, a hundred-million receiving circuit and a PD are further arranged in the receiving card and used for receiving the modulated visible light signal of the first host computer and converting the modulated visible light signal into an electric signal to a second host computer, and the visible light signal of the LED is connected with the PD through a visible light transmission channel.
Preferably, the first host is provided with a first PCIe interface, the PCIe gold finger of the transmitting card is inserted into the first PCIe interface, the second host is provided with a second PCIe interface, the PCIe gold finger of the receiving card is inserted into the second PCIe interface, and the PCIe gold finger is connected with the power module and the network controller inside the transmitting card or the receiving card and used for fixing the transmitting card or the receiving card and carrying out PCIe communication and 12V power supply.
Preferably, the power supply module receives 12V power transmitted by PCIe gold fingers for conversion into appropriate voltages to drive the network controller, the hundred mega transmitting circuit, the hundred mega receiving circuit, the LEDs, the PDs.
Preferably, the network controller is provided with a PCIe interface connected to a PCIe gold finger for forming an ethernet data link layer to perform ethernet communication with the upper computer, and the network controller is further provided with a differential transmit data TX port and a differential receive data RX port of an ethernet physical layer for connecting a hundred megabyte transmitting circuit or a hundred megabyte receiving circuit to transmit and receive network data.
Preferably, the hundred mega transmission circuit is connected with a TX port of the network controller, and is used for amplifying the differential network data signal transmitted by the network controller and converting the differential network data signal into an LED driving signal to be sent to the LED.
Preferably, the hundred million receiving circuits are connected to an RX port of the network controller, and are used for amplifying, filtering and sending the output signal of the PD to the network controller for demodulation.
The utility model has the following beneficial effects:
the hundred-million visible light one-way network card of the PCIe interface designed by the utility model solves the problem of insufficient physical isolation caused by bidirectional transmission on a physical layer in the field of Ethernet networking in the information security field, has no cable and optical cable connection, can realize hundred-million rate one-way communication of Ethernet, and aims to solve the problem of network physical isolation among different platforms.
Drawings
Fig. 1 is a schematic connection diagram of a hundred mega visible light unidirectional network card system.
Fig. 2 is a schematic structural diagram of a hundred-million visible light unidirectional network card transmitting card.
Fig. 3 is a schematic structural diagram of a hundred mega visible light one-way network card receiving card.
Fig. 4 is a logic block diagram of a hundred mega visible light unidirectional network card transmitting card.
Fig. 5 is a logic block diagram of a hundred mega visible light one-way network card receiving card.
In the figure: 1-PCIe gold finger; 2-a power supply module; 3-a network controller; 4-hundred million transmit circuits; 5-hundred million receive circuits; 6-LED; 7-PD; 8-transmitting the card; 9-receiving the card; 10-a first host; 11-host two; 12-PCIe interface one; 13-PCIe interface two; 14-an optically isolated cavity; 15-visible light transmission channel.
Detailed Description
The technical solutions in the embodiments of the present invention will be described in further detail in the following clearly and completely with reference to the accompanying drawings in the embodiments of the present invention. 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.
As shown in fig. 1-5, a hundred mega visible light network card transmitting card 8 and a hundred mega receiving card 9 of a PCIe interface include a PCIe gold finger 1, a power module 2, a network controller 3, a hundred mega transmitting circuit 4, a hundred mega receiving circuit 5, an LED6, and a PD7 (the PD is a photodetector).
The power supply module 2 is connected with a power supply pin of the PCIe golden finger 1, and a DC-DC module or an LDO module is used for providing a power supply with proper voltage for the network controller 3, the hundred-million transmitting circuit 4 and the hundred-million receiving circuit 5.
The network controller 3 is provided with a PCIe interface and a 1000BASE-T physical layer interface. The PCIe interface is connected with a PCIe data pin and a clock pin of the PCIe golden finger 1, and an internal Ethernet data link layer and the PCIe interface have a logical link; the internal ethernet physical layer sends ethernet transmission data to the hundred mega transmitting circuit 4 through a TX port of a physical layer differential data interface, and receives ethernet data through an RX port of the physical layer differential data interface.
The hundred mega transmitting circuit 4 is connected between a TX port of a physical layer differential data interface of the network controller 3 and the LED6, and a transmitting signal passes through the differential level-translation single-ended level module, the signal amplification filtering module and the LED driving module provided in the hundred mega transmitting circuit 4 in sequence, and is finally sent to the LED6 to drive the LED to transmit a visible light signal.
The hundred mega receiving circuit 5 is connected between an RX port of the physical layer differential data interface of the network module 3 and the PD7, and a weak current signal sent by the PD7 passes through the transimpedance amplifier, the low noise amplifier and the single-end level-to-differential level conversion module in sequence, and is finally sent to the RX port of the ethernet physical layer differential data interface of the network controller 3.
LED6 selects an LED that emits monochromatic visible light, driven by a modulated current signal, that emits a modulated visible light signal for transmission of ethernet data.
The PD7 may convert the modulated visible light signal into a modulated current signal.
When the visible light network cards are communicated with each other, a hundred mega visible light network card transmitting card 8 of a PCIe interface and a hundred mega visible light network card receiving card 9 of the PCIe interface are respectively inserted into PCIe slots of the first host 10 and the second host 11.
The LED6 of the gigabit visible light network card transmitting card 8 of the PCIe interface transmits the visible light signal to the PD7 of the gigabit visible light network card receiving card 9 of the PCIe interface through the channel 1 of the optical isolation cavity 15.
And a device for shielding the optical signal by the visible light transmission channel 15 of the optical isolation cavity 14.
The present invention is not limited to the above embodiments, and any structural changes made under the teaching of the present invention shall fall within the scope of the present invention, which is similar or similar to the technical solutions of the present invention.
The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.
Claims (3)
1. The hundred-million visible light one-way network card of the PCIe interface is characterized by comprising a transmitting card (8) and a receiving card (9), wherein PCIe gold fingers (1), a network controller (3) and a power module (2) are arranged in the transmitting card (8) and the receiving card (9), a hundred-million transmitting circuit (4) and an LED (6) are further arranged in the transmitting card (8) and used for converting a modulated electric signal of a first host (10) into a visible light signal, a hundred-million receiving circuit (5) and a PD (7) are further arranged in the receiving card (9) and used for receiving the modulated visible light signal of the first host (10) and converting the modulated visible light signal into an electric signal to a second host (11), and the visible light signal of the LED (6) is connected with the PD (7) through a visible light transmission channel (15);
the network controller (3) is provided with a PCIe interface connected with a PCIe gold finger (1) and used for forming an Ethernet data link layer to carry out Ethernet communication with an upper computer, a differential sending data TX port and a differential receiving data RX port of an Ethernet physical layer are further arranged in the network controller (3) and used for being connected with a hundred-megabyte transmitting circuit (4) or a hundred-megabyte receiving circuit (5) to carry out transmitting and receiving of network data, the hundred-megabyte transmitting circuit (4) is connected with the TX port of the network controller (3) and used for amplifying a differential network data signal transmitted by the network controller (3) and converting the differential network data signal into an LED driving signal to be transmitted to an LED (6), and the hundred-megabyte receiving circuit (5) is connected with the RX port of the network controller (3) and used for amplifying and filtering an output signal of the PD (7) and transmitting the amplified and filtered output signal to the network controller (3) for demodulation.
2. The hundred megabytes of visible light one-way network card with the PCIe interface as claimed in claim 1, wherein the first host (10) is provided with a first PCIe interface (12), the PCIe golden finger (1) of the transmitting card (8) is inserted into the first PCIe interface (12), the second host (11) is provided with a second PCIe interface (13), the PCIe golden finger (1) of the receiving card (9) is inserted into the second PCIe interface (13), and the PCIe golden finger (1) is connected with the power module (2) and the network controller (3) inside the transmitting card (8) or the receiving card (9) and used for fixing the transmitting card (8) or the receiving card (9) for communication and 12V power supply.
3. The hundred megabytes visible one-way network card for the PCIe interface of claim 2, wherein the power module (2) receives 12V power transmitted by PCIe gold finger (1) for converting into appropriate voltage to drive the network controller (3), the hundred megabytes of transmitting circuit (4), the hundred megabytes of receiving circuit (5), the LEDs (6), and the PDs (7).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121420054.5U CN216565179U (en) | 2021-06-25 | 2021-06-25 | Hundred-million visible light one-way network card of PCIe interface |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121420054.5U CN216565179U (en) | 2021-06-25 | 2021-06-25 | Hundred-million visible light one-way network card of PCIe interface |
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| CN216565179U true CN216565179U (en) | 2022-05-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116112291A (en) * | 2023-04-11 | 2023-05-12 | 湖南博盛芯微电子科技有限公司 | Unidirectional transmission network card and control method thereof |
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2021
- 2021-06-25 CN CN202121420054.5U patent/CN216565179U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116112291A (en) * | 2023-04-11 | 2023-05-12 | 湖南博盛芯微电子科技有限公司 | Unidirectional transmission network card and control method thereof |
| CN116112291B (en) * | 2023-04-11 | 2023-06-20 | 湖南博盛芯微电子科技有限公司 | Unidirectional transmission network card and control method thereof |
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