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AFDX modeling library aimed at aerospace network architectures

Posted: 20 May 2014     Print Version  Bookmark and Share

Keywords:Mirabilis Design  aerospace network  avionics  AFDX library  Ethernet 

Mirabilis Design Inc. has rolled out a VisualSim Avionics Full-duplex Switched Ethernet (AFDX) Library used by designers and architects in next generation avionics systems development to model AFDX-based avionics networks. According to the company, the blocks of this library can be integrated with other VisualSim libraries including hardware architecture components, software components and Ethernet to construct the full avionics system. It can also be used to analyse the architecture of a multi-protocol bridge and AFDX switch SoC, added Mirabilis.

AFDX modeling IP library is an extension to the existing Ethernet, VME, and 1553 library set focusing on reducing effort of modeling complex avionics data networks. Using Mirabilis Design's AFDX library one can model high level system bus and assemble various subsystem modules such as instruments, auto-pilot and ABS that are connected to the data communication network. This enables users to quickly evaluate the architecture of next generation avionics network architectures and run feasibility tests to improve performance, management of power consumption and obtain system configuration details for implementation.

VisualSim Avionics Full-duplex Switched Ethernet Library

AFDX library is fully integrated with VisualSim Hardware architecture library and VisualSim Networking library. VisualSim AFDX library supports full duplex, double redundancy, high performance and deterministic/non-deterministic response time. The main elements of AFDX network library are: the AFDX End-Systems, AFDX Switch and AFDX Virtual Links.

The AFDX End system is the subsystem which is embedded in each avionics system's equipment connected to the network. Each VisualSim AFDX switch has filtering, policing and forwarding functions with more than 4096 Virtual Links. The AFDX switch can operate in any topology including a star. Users can configure AFDX Switch module based on the requirement by varying parameters. AFDX Virtual links are part of the VisualSim library block and are defined as unidirectional logic path from the source end-system to all of the destination end-systems.

AFDX switch

Designers construct system-level models by starting with VisualSim platform templates and adding on other library or user defined components, as required. Regression simulations are conducted by varying the parameter values in the simulation cockpit and selecting the desired output reports. In the early design phase, VisualSim models are abstracted using distribution-based traffic and delay functions to represent architecture components. These models help select viable architecture alternates and design attribute boundaries. With these performance constraints in the framework, the delay functions are replaced with the functional and cycle-accurate components from the Toolkit to refine and validate the microarchitecture.

The VisualSim AFDX modeling Library is available on Windows, Linux and UNIX. The Library requires VisualSim Architect to construct models and simulate.

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