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VSI/GVA Data Model

VSI/GVA Data Model. Bob Connor/Tim Murray Andy Searle/Dave Lewington. Contents. The need for communication between subsystems Publish & Subscribe communication Middleware simplifies the communication between subsystems The Land Data Model Model Structure Land Data Model Ownership. 2.

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VSI/GVA Data Model

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  1. VSI/GVA Data Model Bob Connor/Tim Murray Andy Searle/Dave Lewington

  2. Contents The need for communication between subsystems Publish & Subscribe communication Middleware simplifies the communication between subsystems The Land Data Model Model Structure Land Data Model Ownership 2

  3. Subsystem Communication • Need for subsystems to communicate with one another • GPS & Inertial Navigation System • Inertial Navigation System to Weapon System • Crewstation to Automotive • The complete Vetronic system is greater than the sum of the subsystems! Data Producer Data Consumer Data Producer Data Consumer Subsystem Subsystem

  4. Multiple Subsystem Communication Data Producers need to know where Consumers live Data Producer Data Consumer Data Consumer Disadvantage Tight coupling between producers & consumers Data Consumer Data Producer Data Producer Data Consumer Data Producer

  5. Publish & Subscribe Communication Data Producers do not need to know where Consumers live • Efficient Communication • Loosely Coupled • Asynchronous Data Producer Data Consumer Data Consumer Data Producer Middleware Data Consumers do not need to know where Producers live Data Consumer Data Producer

  6. Publish & Subscribe Communication Publish Publish Subscribe Subscribe Subscribe Subscribe

  7. Abstracted Subsystem Communication Middleware • Middleware abstracts the applications from the communication mechanism • Application program need only provide an interface to the middleware

  8. Requires a common language understood by all participants A minimum vocabulary recognised by all participants Communication

  9. Data Model – common subsystem vocabulary • DDS Middleware will establish an Information backbone • Basis for ‘plug & play’ subsystems. • A ‘comprehensive’ Data Model must be defined for all subsystems • A vehicle profile is applied to the Data Model to extract only interfaces required for that vehicle. • The Data Model then generates the interface code for each subsystem 9

  10. Land Data Model Land Data Model development is funded as part of the current VSI research package QinetiQ led with contributions from: BAE Systems, Thales, General Dynamics (UK), Ultra Electronics, Selex Galileo, Lockheed Martin (Insys), VRC (University of Sussex). VSI & GVA Data Models are the same! GVA model is a baselined version of the VSI Data Model GVA implements a subset of the full VSI functionality 10

  11. Model Structure • Model segmented into functional areas • Behaviour independent • Documentation included • UML diagrams e.g. class & sequence diagrams • Interface Design Language • generating the interface code 11

  12. LPPV Data Model Instantiation • Subset of the full VSI Data Model • Implement only the interfaces required for the subsystems fitted 12

  13. Ownership of the Data Model Essential that it is owned by MOD! Essential for MOD to be able to give the model to whomever it wants. Essential for MOD to stop suppliers changing things in a way that is only in the supplier’s interest International Research Collaboration – potential for MOD to standardise with France, Germany etc. 13

  14. VSI Briefing Day QinetiQ demonstration • Video integration and interoperability • Multiple sensor types (SD, HD, steerable etc) displays and video formats (compression etc) • Interaction between individual company elements demonstrated • Uses Video Standard Def Stan 00-82 • 10 Gigabit Ethernet infrastructure • DDS Middleware and VSI data • QinetiQ & Selex only

  15. VSI Briefing Day QinetiQ demonstration Selex Monitors QinetiQ Monitors Selex Sources QinetiQ Sources 00-82 domain Video Manager/Gateway Monitor DDS domain Selex Virtual Mount Selex/DRS crewstation

  16. VSI Briefing Day QinetiQ demonstration Thales Monitors QinetiQ Monitors Thales RTOS Source QinetiQ Sources 00-82 domain Video Manager/Gateway VTID Source Monitor DDS domain

  17. Bob Connor Technical Leader VSI FPPS QinetiQ Ively Road Farnborough Hampshire United Kingdom GU14 0LX Tel: +44 (0)1252 397011 Mob: +44 (0) 7876 447382 Email: rmconnor@QinetiQ.com 17

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