Vetronics System Integration

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Vetronics System Integration
MilCAN and Ethernet Presented By Bob Connor and
Elias Stipidis 9th International CAN Conference,
Munich, 14-16 October 2003
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VSI - MilCAN and Ethernet
Summary

• Introduction
• MilCAN Overview
• Study
• MilCAN and Ethernet
• - Design, Implementation and Testing
• Conclusion
• Future Work
• Acknowledgments

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VSI - MilCAN and Ethernet
Introduction

• Drivers
• Vetronics Distributed Real Time Systems
• High Performance Communication System
• Deterministic Behaviour
• Basic Technology
• Single Common Electronic Architecture
• Standardisation
• Applications
• Capabilities
• Flexibility (different communication
  systems/interfaces)
• Versatility (different application environments)
• Affordable (Cost Against Performance)

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VSI - MilCAN and Ethernet
Frame / Priority
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VSI - MilCAN and Ethernet
Synhronisation
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VSI - MilCAN and Ethernet
Message Scheduling
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VSI - MilCAN and Ethernet
Study

• QinetiQ Testbed
• Highly Deterministic Embedded Distributed System
• CAN MILCAN
• CAN/CAN Bridges
• Add Different Interfaces
• Hardware, Software, Combination?
• Challenging Application?
• Challenging Communication Technology?

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VSI - MilCAN and Ethernet
Study

• Hardware
• Robust and Fast
• Not Very Flexible
• Potentially Costly
• Software
• Robust and Relatively Fast
• Flexible
• Portable
• Software/Hardware
• Limited to the Hardware

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VSI - MilCAN and Ethernet
Study

• Conclusion
• Use MILCAN Testbed
• Use Software for the SNI
• Attach a Portable Software Platform
• Attach an Application User Interface
• Attach a CAN Communication Interface
• Attach an Ethernet Communication Interface

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VSI - MilCAN and Ethernet
Design

• Important Considerations
• MILCAN Based Messaging
• Transparent Communications
• Internal and External Systems Messaging
• Critical and Non-Critical Messaging
• Dynamic Determinism
• Multiple Interfaces
• KEEP IT SIMPLE

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VSI - MilCAN and Ethernet
Design

• VSI Standard Network Interface (draft)

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VSI - MilCAN and Ethernet
Design

• Software
• Modular Layer Design
• C/C
• OS Portable
• Desktop / Embedded Portable

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VSI - MilCAN and Ethernet
Design

• Software Platform Operation
• Standard Bridging and Routing
• Filtering
• Storing and Monitoring
• Translation
• Forwarding
• Encapsulation
• Flooding
• Routing
• Determinism
• Multiple Queues (SYNC, HRT1-3, SRT1-3, NRT)
• Dynamic Message Transmission
• Synchronisation

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VSI - MilCAN and Ethernet
Design

• Network Interfaces
• CAN
• MILCAN
• Ethernet
• Customised EtherNet/IP
• Remote Application
• User Interface (PC Windows)

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VSI - MilCAN and Ethernet
Implementation

• The MILCAN Testbed

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VSI - MilCAN and Ethernet
Implementation

• Testbed Main Modules
• Single CAN Nodes (MILCAN)
• Dual CAN Nodes (MILCAN)
• Linux OS Software Platform on PCs/Laptops
• Interconnections
• CAN Nodes to PC/Laptop via 8Mbps USB
• PC/Laptop to GBit Switching Backbone via 100Mbps
  Ethernet
• PC/Laptop Windows GUI to GBit Backbone via
  100Mbps Ethernet

Embedded Network Processor Linux 2.4 100Mhz
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VSI - MilCAN and Ethernet
Results
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VSI - MilCAN and Ethernet
Results
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VSI - MilCAN and Ethernet
Project Status

• Completed Implementation on Testbed (Working
  Testbed)
• Implemented Embedded System Hardware to Replace
  PCs/Laptops
• Completed CAN System Testing
• CAN and Ethernet System Testing On-Going
• Optimising Implementation Specific Issues (eg USB
  Drivers and Modules)
• Discussions on Further Investigations

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VSI - MilCAN and Ethernet
Conclusion

• Proved the Concept of SNI and Bridging
• Working Testbed System
• Initial Tests Very Promising

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VSI - MilCAN and Ethernet
Future Work

• MILCAN Multi-segment Network Management
• Additional Interfaces (eg FlexRay, TTP)
• Develop and Implement Dynamic Message
  Prioritisation Transmission on the CAN System
• Development Tools

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VSI - MilCAN and Ethernet
Acknowledgements

• Work Funded by the UK MoD
• People in the Project
• Periklis Charchalakis
• George Valsamakis
• Bob Connor
• Elias Stipidis

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VSI - MilCAN and Ethernet
Questions???
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VSI - MilCAN and Ethernet
Additional Material

• User Interface