Project HUSP: HumidityUVc Sensor Payload

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Project HUSPHumidity/UV-c Sensor Payload

• Team Parro
• Presentation of Flight Results
• NSBF, Palestine, TX

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Team Members

• Josh Hignight Project manager and software
  development
• Jason Rollins Responsible for electrical work
  including power consumption, sensor interfacing,
  electrical design, and balloon sat testing
• Matt VanKerhkove Thermal design and acquisition
  of parts for thermal needs, as well as thermal
  testing
• Tim Butler In charge of things dealing with
  constrution

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Project Proposal

• Using a humidity, UV-c, and temperature sensor,
  Team Parro will plot a graph of absolute humidity
  vs. altitude, UV-c vs. altitude, and UV-c vs
  humidity, in a hope to see a spike in absolute
  humidity at the upper boundaries of the ozone
  layer due to an increase in UV-c.

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Science

• Ozone layer 19-48 km high
• UV-c cannot penetrate ozone layer
• Temperature rises where the ozone begins

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Science

• Ozone absorbs UV between 200nm and 310nm
• This breaks up the ozone from
• O3 ? O2 O
• The O then forms with water to form two hydroxyl
  molecules O H2O ? 2HO
• Each of these OHs then form with methane, and
  other pollutants to form water.

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Humidity
Humidity and Temperature Dependence
NASAs UARS Project
Present Data on Humidity vs. Altitude
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Sensors

• HOBO
• Boston Electronic UV sensor JEC.01C

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Design

• The payload consist of two boxes, a UV sensor,
  HOBO, balloon sat circuit board (includes EEPROM
  chip, and processor), an analog to digital
  converter, a 741 op-amp to buffer our UV sensor,
  and a Lucite window.
• The balloon sat circuit board resides in the
  smaller box and connect to the sensors through
  the ADC. HOBO will be outside of both the inner
  and outer box, while the UV sensor will remain
  inside the larger box.
• Hand warmers will be placed inside the larger box
  to keep the temperature above the electronics
  operating temperature.

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Payload Construction
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Software

• Our program will read our UV sensor form CH2 of
  the ADC every 3.25 seconds.
• After every read, the current address counter
  will be saved into address 0 of the 24128w6.
• Before each read, the program will check itself
  and shut down if there is not enough free space.

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Testing
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Mission Operations

• The software will be run and the box sealed. The
  sensors will then begin collecting data and will
  continue to do so until recover or when memory is
  full. The payload will then be recovered and the
  data collected from the EEPROM chip via a serial
  connection.

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Data Acquisition and Analysis

• The data will be retrieved by running a program
  to print out the stored data onto the debug
  screen. The data will then be copied and pasted
  into excel where it will be calibrated and
  plotted.

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Budget
Expense Budget
Weight Budget
Object Weight(g) Electronics 107 Inner
Box 78.5 Outer Box 142.75 HOBO 20 Hand
Warmers 66 Battery 60 Lucite 20 Sensors Negl
igible Total Weight 494.25
Object
Price
Foam Board 5 Hand Warmers 4.50 Sensors 1
32 Electronics Provided Lucite
Free Wire 10 Batteries 20 T
otal 160
Power Budget
EEPROM 40mA ADC 15mA 24128w6 3m UV
sensor none Total mA 58mA Total running time
41 hours
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Sources for Facts and Figures

• Sensor
• http//content.honeywell.com/sensing/prodinfo/humi
  ditymoisture/009012_2.pdf
• http//www.sensorsmag.com/articles/0701/54/main.sh
  tml
• Science
• http//www.igac.noaa.gov/newsletter/21/measurement
  s.php
• http//www.es.lancs.ac.uk/casestud/case13.htm
• http//www.indiana.edu/climate/g470/Lectures/Humi
  dity/MoistAir.html
• http//www.indiana.edu/climate/g470/Lectures/Humi
  dity/MoistAir.html
• http//www.grida.no/climate/ipcc_tar/wg1/080.htm
• NASA related projects and info
• http//svs.gsfc.nasa.gov/stories/humidity_20040315
  /index.html
• http//msis.jsc.nasa.gov/sections/section05.htm
• http//science.hq.nasa.gov/missions/satellite_25.h
  tm
• http//aqua.gsfc.nasa.gov/
• http//earthobservatory.nasa.gov/
• http//www.nasa.gov/home/hqnews/2003/dec/HQ_03394_
  water_map.html
• http//www.nasa.gov/home/hqnews/2004/mar/HQ_04090_
  satellite_finds_warming.html

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End
Questions ?