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Avionic full-duplex switched-type Ethernet network card and integration method thereof

An avionics, full-duplex technology, applied in the field of Ethernet network cards, can solve the problem of no product implementation of the AFDX terminal system protocol layer, and achieve the effects of fast virtual link filtering, reducing resource consumption, and fast transmission scheduling

Inactive Publication Date: 2010-12-01
BEIJING SHENZHOU FEIHANG TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0008] The present invention provides an avionics full-duplex switched Ethernet network card and its integration method, to solve the technical problem that each protocol layer of the AFDX terminal system defined by the ARINC644 protocol has no specific product implementation mode

Method used

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  • Avionic full-duplex switched-type Ethernet network card and integration method thereof
  • Avionic full-duplex switched-type Ethernet network card and integration method thereof
  • Avionic full-duplex switched-type Ethernet network card and integration method thereof

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Embodiment Construction

[0053] Examples see figure 2 As shown, this avionics full-duplex switched Ethernet network card AECAFDX-ES01 includes the following functional modules and interfaces connected to the board:

[0054] The FPGA chip used for each hardware logic operation adopts Virtex 5, and the FPGA chip is connected with other functional modules and interfaces, and the three-layer protocol of transmission layer UDP, network layer IP and link layer Virtual Link is realized through logic programming;

[0055] The MAC controller used to control and connect the PHY physical medium of the physical layer, and the MAC controller is set inside the FPGA chip;

[0056] The PHY chip used to connect the RJ45 port and the FPGA chip to implement the physical layer protocol. There are two PHY chips connected between the FPGA chip and the two RJ45 ports;

[0057] DRAM memory for receiving and sending data buffer, using two 16bit / 512Mb / DDR2 memories;

[0058] EEPROM memory for storing logic programming code;...

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Abstract

The invention relates to an avionic full-duplex switched-type Ethernet network card and an integration method thereof. Allocation information of various layers and a communication interface, required by a terminal system, is downloaded into an RAM (Random Access Memory) in an FPGA (Field Programmable Gate Array) chip, and all functional modules are in circuited connection with the communication interface, therefore, four protocols of a transmission layer UPD, a network layer IP (Internet Protocol), a link layer Virtual Link and a physical layer PHY are integrated on a board card. The invention finishes most functions of the whole AFDX (Avionic Full-duplex); the functions of a soft part are achieved just by simply writing data and ports into a transmission sharing memory of the network card and reading the data and the ports from a reception sharing memory, which is not basically relational to a communication protocol and very simple in operation. The invention can be directly applied to a data loading system of an AFDX bus, an AFDX simulation system, an AFDX integration system, and other application systems.

Description

technical field [0001] The invention relates to an Ethernet network card used in avionics communication and other real-time network fields, and an integrated realization method of the network card. Background technique [0002] my country's avionics system data communication mainly uses MIL-STD-1553 and ARINC429 protocols. These two protocols have the characteristics of high reliability and strong stability, so they are widely used in contemporary avionics systems. However, these two protocols can no longer meet the requirements of avionics high-speed data communication in terms of network throughput, speed and delay. Therefore, the industry proposes a new high-speed bus technology protocol - avionics full-duplex switched Ethernet (AFDX: Avionics Full Duplex Switched Ethernet), and developed the protocol specification ARINC644. [0003] According to the definition of ARINC644: AFDX is a deterministic network with guaranteed bandwidth with maximum delay, maximum jitter and d...

Claims

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Application Information

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IPC IPC(8): H04L29/10H04L29/08
Inventor 司衍光李进军李海菊
Owner BEIJING SHENZHOU FEIHANG TECH CO LTD
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