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Signal Concentrator Unit

PDF print version of this specification : A4 or Letter

The Signal Concentrator Unit (SCU) is a real-time distribution system for ship sensor data. The SCU has been designed for mission-critical applications and therefore intrinsically supports a dual-redundation configuration of two or more SCUs.

Functions

The SCU will typically provide the following functions :

  • Receives data from the following sensors : 2 Doppler Logs, 4 GPSs, 2 Electromagnetic Logs, 2 Weather Stations, 2 Echo Sounders and 2 Inertial Navigation Systems
  • Monitors status of sensors
  • Monitors link status to sensors
  • Selects best source of sensor data
  • Timestamps sensor data
  • Provides age of data for selected sensor data
  • Distributes sensor data
  • Distributes SCU status
  • Distributes status of each sensor and status of the link sensor status
  • Displays the status of the SCU, sensors and sensor links

Features

  • Configurable
  • Flexible
  • Scalable
  • Replicated Architecture
  • Fault-Tolerant
  • Networked
  • Cost-Effective

Design and Architecture

The SCU implements a distributed hardware architecture ensuring a high level of reliability and freedom from any single point of failure.

SCU Front View
SCU Rear View

Interfaces

The SCU provides the following interfaces :

  • Configurable up to 96 high-speed serial interfaces (UART or HDLC configurable up to 20 Mbps maximum per interface)
  • Up to 24 low-speed serial interfaces (UART up to 115 Kbps maximum per interface)
  • 2 Ultra high-speed LAN interfaces (FDDI, Gigabit Ethernet, 10 Gigabit Ethernet, 4 Gigabit Fibre Channel, etc.)
  • Up to 14 PMC slots
  • Up to 6 spare VME slots

SCU Specifications

    Physical Characteristics

Power Supply 115 V, 60 Hz or 240 V, 50 Hz
The power supply requirements are specified by STANAG 1008.
Power Consumption Typically 3 A
Total Mass 20 kg +/- 10 kg
Temperature 0 C to 70 C
Options : 0 C to 55 C, -15 C to +75 C, -40 C to +85 C
Shock 25 g (5 ms)
IP Rating IP54 (IEC-60529)
Heat Dissipation 150 W
Noise < 46 dBA
Dimensions

L = 420 mm
B = 483 mm
H = 450 mm 100 mm

    Performance

    • Sensor data latency of less that 1 ms for selected high-speed serial interfaces.
    • Age of data estimation, from end of reception to end of transmission, accurate to within 100 s for sensor data on selected high-speed serial interfaces.
    • Flash RAM Storage Data for increased vibration tolerance.

    Software

    • VxWorks Real-Time Operating System
    • C, C++ Application Software

    Options

    • VME
    • Multibus II
    • Compact PCI
    • PC/104
    • PCI

    Applications

    • Naval Ships
    • Merchant Ships
       

SCU   Issue 4   2010-09-01
CCII Systems (Pty) Ltd P.O. Box 171 Rondebosch 7701  South Africa 
Telephone : (+27 21) 683 5490 Facsimile : (+27 21) 683 5435 WWW : www.ccii.co.za