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Sunday, December 29, 2013

Multi-Sensor Stabilized Integrated System

11:12 PM
MULTISENSOR

Day/TV camera
  •   create a picture during day time.
  •   converts the field of view seen the turret in to video picture.
FLIR camera
  • This sensor receives the thermal radiation of any object  and create a picture on the detector during the day and the night time
  •   This camera is able to create picture  during both day and night.
  •   The warmer objects are displayed on the monitor from  grey to white, while cooler objects are displayed from black to grey.
LRF (Laser Rang Finder)
  •  LRF is able to obtain the range using laser beam.
Laser Pointer
  •  Using this, an object can be designated to a person who is wearing a night vision
STABILISED

The main task of the turret is to stabilize the sensors LOS in order to obtain clear  image , free of external vibrations and disturbances to carry out the stabilization function the turret contain four gimbals.

-   External azimuth gimbals-  External elevation gimbals-  Internal azimuth gimbals-  Internal elevation gimbals
  •  It handling stabilization and steering system
  •   Sensor are mounted on a stabilized “ optical  bench” in side the turret
  •   Optical bench is mounted Gyro-stabilized gimbals mechanism
E BOX

E-box controls - the system management,- processing of  data,- internal and external communication - generation of video signals - tracking

E BOX includes
  •    Main computer board
  •   Video graphic board
  •   Tracker board
  •   Mother board
  •   Power supply
C BOX
  • The C-box controls stabilization and  steering acting on commands from the E- box and signals from the turret .
  •   Servo control loops(SCL)
  •   Servo control input /output(SCIO)
  •   Inner power amplifier board
  •   Outer power amplifier board
  •   Power supply
VCR Assembly
  • Video cassette recorder
  •   VCR interface box
  •   Connected to E BOX
  •   Record video and data on the monitor
CONTROL PANEL
  • This contain switches ,controls and joystick
  • There is a Electronic board inside the panel
  • This has a single connector to the monitor
MONITOR Assembly
  • Display the video of FLIR or TV camera
  • Monitor connected to monitor interface box.
Operation Modes

Manual
  •   Activated when tracking is broken
  •   LOS is controlled by the joystick
  •   Tracking done by the joystick
Track mode
  •   Automatic tracking using selected sensor
  •   Track break in following conditions,
  •   Weather/visibility conditions
  •   Target speed too high
  •   Focus changed
  •   FOV changed
  •   Sensor changed
Scan mode
Sector scan
  •   Horizontal scan within given margins
  •   Elevation controlled by operator

Parallel scan
  •   This is basically sector scan.
  •   When turret move to top margin LOS is moved to starting point.

Square scan
  •   Here LOS move repeatedly in a square shape.
Contour scan
  •   Here operator defines set of points.
  •   LOS moves one point to another by order of definition.
Creeping-line-ahead
  •   Scanning line is vertical and azimuth is controlled by operator.
Service mode
  •   This mode select when there is a service error
  •   This is used to assist in system maintenance and update system.
Stow mode
  •   This select when there is no failure detected.
  •   This is enable observation straight ahead a wide FOV.
  •   Here,
  •   Azimuth 0
  •   Elevation 0
Maintenance concepts

preventive
  •   This should done 3 years,
  •   Turret performance verification [ electro-mechanical and optical]
  •   Static seal checking
  •   N2  purging
Corrective
  •   When defect was found in the system corrective maintenance should done
Servo error
  •   Execute initial relative BIT process via service mode to ensure the failure was not incidental
  •   It fault persists shutdown the system
Stuck of FOV changing                                            
  •   FOV focusing motor error
Nitrogen leaking
  •   It is able detect the location of leaking  by using soap water then clean or repair the area and assemble the turret
Advantages

  •   System can be used at any condition of light
  •   System can be used at any environment condition due to higher stability
  •   System is compact
  •   External fire control systems can interface with the system

















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