Project HUSP:
Humidity/UV-c Sensor Payload
Team Parro
Presentation of Flight Results
NSBF, Palestine, TX
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
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.
Science
•
•
•
Ozone layer ≈
19-48 km high
UV-c cannot
penetrate ozone
layer
Temperature rises
where the
ozone
begins
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 OH’s then form with
methane, and other pollutants to form
water.
Humidity
Humidity and Temperature Dependence
NASA’s UARS Project
Present Data on Humidity vs. Altitude
Sensors


HOBO®
Boston Electronic
UV sensor JEC.01C
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.
Payload Construction
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.
Testing
0.25
y = 1.9073x - 0.0408
0.2
0.15
0.1
0.05
0
0
0.02
0.04
0.06
0.08
0.1
0.12
0.14
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.
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.
Budget
Expense Budget
Object
Foam Board:
Hand Warmers:
Sensors:
Electronics:
Lucite:
Wire:
Batteries:
Total:
Weight Budget
Price
Object
Weight(g)
Electronics:
107
~$5
Inner Box:
78.5
~$4.50
Outer Box:
142.75
~$132
HOBO
20
Provided
Hand Warmers: 66
Free
Battery:
60
~$10
Lucite
20
~$20
Sensors:
Negligible
~$160
Power Budget Total Weight:
494.25
EEPROM:
40mA
ADC:
15mA
24128w6 :
3m
UV sensor:
none
Total mA
58mA
Total running time: 41 hours
Sources for Facts and Figures
Sensor
http://content.honeywell.com/sensing/prodinfo/humiditymoisture/009012_2.pdf
http://www.sensorsmag.com/articles/0701/54/main.shtml
Science
http://www.igac.noaa.gov/newsletter/21/measurements.php
http://www.es.lancs.ac.uk/casestud/case13.htm
http://www.indiana.edu/~climate/g470/Lectures/Humidity/MoistAir.html
http://www.indiana.edu/~climate/g470/Lectures/Humidity/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.htm
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_war
ming.html
http://www.nasa.gov/centers/dryden/pdf/88488main_H-2147.pdf
End
Questions ?