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The Time Triggered Architecture

The Time Triggered Architecture. ITV Distributed Real-Time Systems Anders P. Ravn Aalborg University September 2006. Requirements. Fault Containment Regions (FTR) Deterministic System Ethernet Standard. Predictable and Deterministic. Fault-Tolerant Global Time Strong Fault Isolation

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The Time Triggered Architecture

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  1. The Time Triggered Architecture ITV Distributed Real-Time Systems Anders P. Ravn Aalborg University September 2006

  2. Requirements • Fault Containment Regions (FTR) • Deterministic System • Ethernet Standard

  3. Predictable and Deterministic • Fault-Tolerant Global Time • Strong Fault Isolation • Consistent Diagnosis • Scalable

  4. Det. Channel • treceive  tsend + (dmin,dmax) • Temporal receive consistency • Simultaneous send consistency Required for transparent N-modular consistency

  5. Event versus State Messages

  6. Time Granularity

  7. Configurations

  8. Package Format

  9. Message Categories • ET message • Free-Form TT message • TT startup message • TT synchronization message • Unprotected TT message (UTTM) • Protected TT message (PTTM)

  10. TT Scheduler • Computes conflict free schedule! • ET messages are ignored

  11. Remarks • F-T is established by Guardians • Only bus design that really covers F-T

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