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Autosub Electronics and Data Processing

Autosub Electronics and Data Processing. James Perrett Ocean Engineering Division Southampton Oceanography Centre James.Perrett@soc.soton.ac.uk. Overview. The Electrical/Electronic Architecture Distributed Software Architecture Data Logging and Processing. Power System.

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Autosub Electronics and Data Processing

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  1. Autosub Electronics and Data Processing James Perrett Ocean Engineering Division Southampton Oceanography Centre James.Perrett@soc.soton.ac.uk

  2. Overview • The Electrical/Electronic Architecture • Distributed Software Architecture • Data Logging and Processing

  3. Power System • Manganese Alkaline - 96V Nominal • Individual battery currents continuously monitored • Motor runs at raw battery voltage • All other systems on 48V or 24V bus • Most sub systems electrically isolated

  4. Wiring Harness • One cable carries all connections required by most sub systems • LONWorks data network • 48V Power Supply • 24V Power Supply

  5. Electronic Hardware • Standard Types • Analogue I/O node • Serial I/O node • LTM 10 (Flash programmable) node • Router • HPSN based node • Specials • Data logger (PC104 based)

  6. Network Configuration - Binding network output int nvo_1 network input int nvi_2 network input int nvi_3 network output int nvo_4

  7. Data Logger • Event Driven • Variables are recorded as they arrive • Scheduled • Variables are polled at regular intervals • Output variables sent to telemetry systems • Files opened, closed and renamed. • Diagnostic Mode • Data sent to serial port. • Ethernet Network File Server

  8. Background - Possible Changes • Reduce wiring harness complexity by standardising on 48V • Add ethernet to harness.

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