Development of the Physical Layer and Signal Integrity Analysis of FlexRay™ Design Systems

Gerke, Thorsten; Bollati, David

doi:10.4271/2007-01-1636

Cited by 10 publications

(6 citation statements)

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“…However, no in-depth details are avail able about this implementation. A simulation setup that incorporates several simulation models for the FlexRay physical layer like transceiver, passive star and cables us ing Synopsis Saber is described in [16]. They demonstrate the capabilities of their implementation by analyzing the signal integrity of a FlexRay network topology.…”

Section: Simulating Automotive Communication Network: Flexraymentioning

confidence: 99%

Heterogeneous co-simulation platform for the efficient analysis of FlexRay-based automotive distributed embedded systems

Karner

Krammer

Krug

et al. 2010

2010 IEEE International Workshop on Factory Communication Systems Proceedings

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Validation front-loading using simulation is required to save efforts and support decision making during the de velopment process. For automotive distributed embedded systems, the fast increasing system complexity usually pre vents the use of simulation encompassing the entire com munication architecture. The simulation is then focused to single domain and/or components. We present in this work a heterogeneous co-simulation model of a FlexRay based system comprising simulation models from the software components down to the waveforms within the FlexRay electrical cables. This platform enables the efficient anal ysis of the assembled system and more especially of the interactions between the components. The description of the models is supported by three test campaigns in order to highlight the importance of holistic simulation as well as the potential of the proposed approach.

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Section: Simulating Automotive Communication Network: Flexraymentioning

confidence: 99%

Heterogeneous co-simulation platform for the efficient analysis of FlexRay-based automotive distributed embedded systems

Karner

Krammer

Krug

et al. 2010

2010 IEEE International Workshop on Factory Communication Systems Proceedings

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“…A simulative approach to determine meaningful results for a CAN bus is presented in [5]. In [6], the behavior of the FlexRay physical layer is simulated for tasks of system design.…”

Section: Related Workmentioning

confidence: 99%

Routing of Safety-Relevant Messages in Automotive ECU Networks

Herpel

Kloiber

German

et al. 2009

2009 IEEE 70th Vehicular Technology Conference Fall

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Modern cars comprise tens of electronic control units, serving for various purposes like entertainment, driver's comfort or occupant protection. To connect these networked embedded systems inside the car, widespread bus systems like CAN or FlexRay are used, each one offering projecting abilities and specific limitations for certain application areas. In order to point out the suitability of a certain in-car network topology for the transmission of highly time-and safety-critical data content, we investigated effects of routing by a central gateway on the communication delay. In cooperation with the German car manufacturer Audi, we installed a prototype measurement infrastructure and collected meaningful communication data samples for up-to-date and future in-car networks. The results we obtained from the data samples allow for a sophisticated evaluation of the in-car communication network with respect to the demands of time-and safety-critical functions at an early stage of system development.

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“…The focus of this paper is on the verification methodology. Details about the FlexRay protocol and how to model them are comprehensively described in [4]. The FlexRay protocol and its electrical physical layer are specified in the FlexRay protocol and the Electrical Physical Layer (EPL) specification.…”

Section: Basics Of Flexray Communication Systemsmentioning

confidence: 99%

“…• Wire lengths These aspects are explained in detail in [4] and will be explained in a compressed form in this paper.…”

Section: • Truncation Of the Transmission Start Sequencementioning

confidence: 99%

An Automated Model Based Design Flow for the Design of Robust FlexRay™ Networks

Gerke

Bollati

2008

SAE Int. J. Passeng. Cars – Electron. Electr. Syst.

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The enormous increase of vehicle functions realized through electronic components significantly impacts the communication within the vehicle network. More functions are requesting higher bandwidth; safety applications require a deterministic communication scheme to ensure reliable system performance even under harsh real world conditions. The new FlexRay vehicle communication standard addresses these requirements, with production networks already on the road. The high transmission rate introduces new challenges for network developers dealing with the implementation of the electrical physical layer as the dynamic behavior of the system cannot be predicted using manual calculations. The FlexRay physical layer working group has therefore established a simulation task force dealing with issues related to FlexRay's physical layer implementation. This task force has developed a virtual prototype based methodology to give network developers early verification of FlexRay physical layer implementations. Topology variants that depend on equipment in the vehicle can be investigated quickly with regard to their robustness under nominal and even worst case conditions. This paper introduces an automated, simulation-based methodology based on the guidelines and criteria defined in the FlexRay physical layer specification. In addition, this paper shows how close OEMs, IC vendors, conformance testers and software tool vendors must work together to define and realize a robust design methodology that is based on a virtual prototype implementation of the FlexRay network.

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Development of the Physical Layer and Signal Integrity Analysis of FlexRay™ Design Systems

Cited by 10 publications

References 1 publication

Heterogeneous co-simulation platform for the efficient analysis of FlexRay-based automotive distributed embedded systems

Heterogeneous co-simulation platform for the efficient analysis of FlexRay-based automotive distributed embedded systems

Routing of Safety-Relevant Messages in Automotive ECU Networks

An Automated Model Based Design Flow for the Design of Robust FlexRay™ Networks

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