FPGA
Process
Flowchart
Backup
FPGA Configurability
• Basis of configurability
– Nature of transistor based FPGA
• Physical limitations
– Through header on PCB using Xilinx provided
development tools
Backup
FPGA Configurability
• Customer configurable
– Configuration languages
• Knowledge of VHDL/Verilog
– Development packages
• Xilinx provided development tools
– Physical configuration requirements
• Connect programmer and download data file, restart
board
Backup
Processing Elements
FPGA
• Transistor based
• VHDL/Verilog
DSP
• CPU based
• C Language
Backup
Customer Needs
•
Use Supplied Components
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10MP Visual Camera
IR Camera
1 of the 2 Inertial Navigation Systems
depending on availability
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•
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•
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•
NovAtel OEM Board OEMV3
NovAtel OEM Board OEMV2
OEM Camera Processing Board
Interface to single 10Mpixel Camera through
proprietary “D3 Camera” connector.
Interface to single Thermal Camera through
Camera Link Interface.
Capture 10MP data at 1FPS
Capture the Thermal Camera data
synchronized with the 10Mpixel camera.
Capture INS data and store to match
corresponding photos.
Accept data from auxiliary external cameras
and INS units
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•
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Make data overlay and processing possible
on-board
Output data from the supplied OEM Board
connection for real-time viewing
Store data internally during flight using a SSD
SATA drive.
Package must include mounting and space
necessary for four cameras.
Package everything (except for the IR
camera) to protect it against the
environment and to minimize the size.
“Everything” Includes:
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–
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•
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(4) visual cameras and their lenses
(1) INS sensor
(1) OEM Camera Processing Board
Any other components necessary for
operation
Position images for ground observations
Make cameras separable from the processing
hardware
Interface package to a light passenger
aircraft.
Backup slide: Final Output
Color Aerial Photograph
IR Camera with INS Data overlay
Customer provided devices
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•
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OEM Digital Signal Processing Board
CameraLink® to D3 Conversion Chips
Novatel OEM Board
IMU System
Cameras
– (2) Using D3 Connector interface
– (1) IR using Camera Link
Appendix: Radiation
Assumptions: Treat enclosure as a
black box
Neglect Convection
Neglect Conduction
Temperature at surface of chassis
= temperature inside of chassis
All Power consumed by
electronics is output as heat
radiating out
= .89
qc = .5qb
Appendix: Humidity
• Dew point temperature is
given as:
– Constants defined as follows:
constants
temp range
Tn (°C)
m
0 to 50
243.12
17.62
-40 to 0
272.62
22.46
• Variables:
– Td - Dew point (C)
– T - Ambient temperature
(C)
– RH - Relative humidity (%)
– m - Temperature range
dependant constant (nondimensional)
– Tn - Temperature range
dependant constant (C)