Docstoc

IR Camera - Euso-Balloon

Document Sample
IR Camera - Euso-Balloon Powered By Docstoc
					     IR CAMERA EUSO BALLOON

               JEM-EUSO Balloon meeting, November 8-9, 2012


          SPAS-UAH team                  ORBITAL AeroSpace Company
                                                 L. Ramírez
S. Pérez Cano, H. Prieto, L. Del Peral
      & M. D. Rodríguez-Frías                SENSIA IR Company
                                                  F. Cortés
                 Outline

• Mission objectives
• IR CAM technical specifications
• Baseline IR Camera
• Backup IR Camera
• Power Battery Subsystem
• IR Camera development plan
• Work plan and objectives
           Mission Objectives


 To validate the IR camera mission concept.

 To obtain real data with a micro bolometer IR camera.

 To assess the wavelength bands and filters selection

 To validate and optimize Temperature Retrieval Algorithms.

 To validate and optimize Stereo Vision Technique.

 To validate and assess part of Calibration Strategy (TBC)
IR Camera EUSO Balloon Technical
         Specifications
                         Factor                     Value
  Altitude                                                                      40km
  Pressure                                                                     3mbar
  Energy Range                                                Thermal Infra Red (TIR)
  Optical Subsystem                                    Devoted for missions objectives
  Frame Rate                                                               1Hz (TBD)
  Wavelength Range                                                       (10-12.5)µm
  IR Bands                                                         10.8 & 12 µm (TBC)
  Absolute Temperature Accuracy                                                  TBD
  FoV                             TBD (depending on the final mechanical box location)
  Angular Resolution                                                             TBD
  Temperature Measurement                                                 (220-320) K
  Power (Including 20% margin)                                                   30 W
  Digitalization                                                         12 Bits (TBC)
  Operating Duty Cycle                                                 1/2 days (TBC)
  Operating Temperature                                     Range within -30°C/+55°C
  Mass Memory                                               Solid State memory (TBC)
  Power Supply                                            IR Camera Battery pack 28V
  Service Electronics                                                            TBD
  Control Interface                                                              TBD
  Size (Including 20% margin)                                       300x400x500 mm
  Weight (Including 20% margin)                                           16kg (TBC)
  Data Link                                                     Internal storage (TBC)
     Baseline COTS IR Camera

Detector (UL 04171)

Technology-Si
Manufacturer: ULIS
Proximity electronics and Signal digitalization
Resolution: 640x480-25m, 16bits
NETD < 120mK
Frame Rate: 1 FPS (TBD)
Power consumption: <300 mW (without TEC)
    Baseline COTS IR Camera

Operational Bands
Band 1:
   CWL: 10.80 (+0, -0.2) m; (TBC)
   FWHM: 0.85 ± 0.1 m
   Transmittance > 80;
   Transmittance Rejection Band: 7 to 10.0 m < 0.01; 11.4
   to 20 m < 0.01

Band 2:
   CWL: 12.00 (+ 0.2, -0) m (TBC)
   FWHM: 0.85 ± 0.1 m
   Transmittance > 80
   Transmittance Rejection Band: 7 to 11.3 m < 0.01; 12.7
   to 20 m < 0.01
Baseline COTS IR Camera
Baseline COTS IR Camera




 GPS? Possible link (cable, wifi)?
        Baseline COTS IR Camera


Data Manage and Storage Subsystem


CPU: VIA EITX-3000

Redundant storage system: 2 mirrored flash memory hard disks (Innodisk)

Watchdogs timers

OS: Linux Debian “Squeeze” (6.0.6) (TBC)
Backup COTS IR Camera option




           IRX Camera
Backup COTS IR Camera option
   Backup IR Camera “IRX Camera”
Main Advantages:
 Detector ULIS (IRCAM main mission representative)
 ITAR free (Canadian supplier)
 Heritage @ IAC

Drawback:
 Data interface with CPU
 Back up solution FLIR Photon 640
Backup IR Camera “IRX Camera”
 Preliminary Mechanical Configuration

EUSO IR Camera accomodation

 Located on the external side of the Gondola
 Totally isolated
 Autonomous batteries

EUSO IR Camera mechanical booth

 Withstand environmental conditions
 Water proof
 Passive thermal control (TBC)



                                                EUSO Balloon Gondola
 IR Camera Battery Pack technical
         specifications

                   IR Camera PWP 12h          IR Camera PWP 24h
Altitude                  40km                       40km
Pressure                 3mBar                      3mBar

Power               30W/25.71Ah, 28V           30W/51.5Ah, 28V

Operation Duty       12h (R-5.3.8-1)            24h (R-5.3.8-1)

Operating        Range within -40˚C/+70˚C   Range within -40˚C/+70˚C
Temperature
Size              (250.2x100.8x170)mm        (500.4x100.8x170)mm

Mass                      4.8kg                       9kg
IR Camera Battery Pack connection
            diagram
       IR Camera Battery Pack 12 h


Component
Battery Component Selected: Saft G62/1.2
Specification: Li-SO2/28V/34.5Ah
Capacity = (Watts required/Volts required)*(Time Hours)
Battery Selection
Capacity @ 12hours = (30W/28)*(24h) = 25.71Ah
•1of 10 Cell Series Saft G62/1.2 = 34.5Ah

* Calculations over 24 hours instead of 12 to guarantee the operation of the IR
camera PWP
IR Camera Battery Pack Mechanical
        Architecture 12 h
                                        IR Camera                 Battery Box




                                              100.08 mm




                                                                                             170 mm
      Upperside and Under side                                   Lateral

                  250.2 mm                                         100.08mm

Mass Calculations                                                               100.08 mm


Density = Aluminum Box = 2.69g/cm3 = 0.00269g/mm3                               Front Side




                                                                                             170 mm
                                                                                 and Rear
Thickness = 3mm                                                                    Side


Lateral Sides Volume = LSV=170mm*100.08mm*3mm*2*0.00269g/mm3 = 275g

Upper and Under Side Volume = USV =250.2mm*100.08mm*3mm*2*0.00269g/mm3 =
404.14g

Front and Rear Side Volume = FBV= 100.08mm*170mm*3mm*2*0.00269g/mm3 =275g

Total Case Mass = LSV + USV + FBV = 275+ 404.14 + 275 = 1kg

TOTAL MASS INCLUDING CELLS AND CASE = (10Cells*300g) + (Case Mass = 1kg) =
4kg+20% of margin = 4.8kg
             IR Camera Battery Pack 24 hrs




Component
Battery Component Selected: Saft G62/1.2
Specification: Li-SO2/28V/34.5Ah
Capacity = (Watts required/Volts required)*(Time Hours)
Battery Selection
Capacity @ 24hours = (30W/28)*(48h) = 51.5Ah
•2of 10 Cell Series Saft G62/1.2 = 69Ah

*48 hrs instead of 24 to guarantee the operation of the IR camera PWP
IR Camera Battery Pack Mechanical
       Architecture 24hrs
                                         IR Camera                Battery Box




                                              100.08 mm




                                                                                             170 mm
      Upperside and Under side                                    Lateral

                  500.4mm                                          100.08mm

Mass Calculations                                                               100.08 mm


Density = Aluminum Box = 2.69g/cm3 = 0.00269g/mm3                               Front Side
                                                                                 and Rear
Thickness = 3mm                                                                    Side




                                                                                             170 mm
Lateral Sides Volume = LSV=170mm*100.08mm*3mm*2*0.00269g/mm3 = 275g

Upper and Under Side Volume = USV =500.4mm*100.08mm*3mm*2*0.00269g/mm3 =
808.3g

Front and Rear Side Volume = FBV= 100.08mm*170mm*3mm*2*0.00269g/mm3 =275g

Total Case Mass = LSV + USV + FBV = 275+ 808.3 + 275 = 1.35kg

TOTAL MASS INCLUDING CELLS AND CASE = (20Cells*300g) + (Case Mass = 1.35kg) =
4kg+20% of margin = 9 kg
          Battery Cells, Connectors and Cables

•Cells


           Option I: In case of 30W /12hrs power consumption it will be necessary 10 cells of Saft G62/1.2
           Option II: In case of 30W /24hrs power consumption it will be necessary 20 cells of Saft G62/1.2



•Connectors

           The Connectors we are going to use are 9 pins D-Sub connectors for all interfaces and
           subsystems.



•Cables
           The Cables we are going to use are THERMAX MIL-DTL-22759/91,92
           for all interfaces and subsystems.
      Battery Voltage Regulator and Fuses

•Voltage Regulator

                     The Voltage regulator suitable for this project is the Military grade
                     LM317/Texas Instruments


•Fuses


                                       Selected fuses are
               Thermal Fuse Klixon C Series and MIL-PRF-23419 Space Coast IC
       Preliminary Budgets

Preliminary estimation has been done and reported:

 SIZE           300 x 400 x 500 mm3
 MASS           16 Kg
 POWER          30W

Updated budgets will be provided during Phase B study. A
reduction of the allocated budget is foreseen.

Functional Requirements

The EUSO Balloon IR camera shall be designed as the lower
cost hardware but sufficient for mission objectives. Moreover,
this hardware will be reusable for all the balloon campaign
opportunities, including possible standalone campaigns.
      IR Cam development Plan
 Due to the utilization of COTS equipment, it is foreseen to build the
EUSO balloon IR camera flight hardware assembly. The flight hardware
shall be qualified for the environmental constrains of the balloon
campaign. This approach can be considered similar that the Proto-
Flight unit in a Space Mission.

The foreseen qualification facilities are placed on the Instituto
Nacional de Técnica Aeroespacial (INTA).

 All the components will be ITAR free

The Mechanical box will be designed to fulfill waterproof
requirement.

The EUSO balloon IR camera will be qualified and validate according
to the environmental constrains of the Balloon Flight Campaign.
       Work Plan and objectives

 To assess a technical solution of the IR Camera
 To Verify the IR filter availability
 Optical Design similar to FM?
 To Analize and study the Environmental operating
condition of the commercial cameras
 To Define an image acquisition strategy (similar to FM?)
 To study the IR Calibration operation
 To evaluate the impact of a Day-light Flight
 Radiative Algorithms and StereoVision method Plan?
 Define the I/F
 Budgets reduction
Thanks for your attention


      Questions?

				
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
views:4
posted:2/15/2013
language:English
pages:28