Johanna Cecava Mentor
Johanna Cecava Mentor
Johanna Cecava Mentor
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http://www.solarnavigator.net/volcanoes.htm<br />
<strong>Johanna</strong> <strong>Cecava</strong><br />
<strong>Mentor</strong>: Alberto Behar
Volcano Monitor
FAQ<br />
� So…you’re going to monitor<br />
volcanoes in space?<br />
� So…this is going to go inside<br />
the volcano?<br />
� Can it walk?<br />
http://www.frc.ri.cmu.edu/robots/
Purpose<br />
� Demonstrate the autonomous<br />
capabilities of the Sensor Web network
Sensor Web<br />
� Connects earth observing satellites to in<br />
situ sensors to monitor volcanic activity<br />
� Currently, sensors trigger spacecraft<br />
observations autonomously
Sensor Web
Objectives<br />
� Shorten response time to volcanic<br />
activity<br />
� Show that spacecraft can trigger in<br />
situ sensors in the event of an<br />
emergency
The Project<br />
� Program a sulfur dioxide sensor to<br />
take readings every hour (regular<br />
mode)<br />
� Program the sensor to take readings<br />
once a minute when triggered by the<br />
satellite (burst mode)
Background<br />
� Why detect SO 2 ?<br />
� Most abundant gas in volcanic<br />
emissions<br />
� Levels increase or decrease depending<br />
on the activity of the vent
Deployment Site<br />
Kilauea Volcano, Hawai’i<br />
(T. Elias and A.J. Sutton 2002)
Component overview
Hardware Mug shots<br />
� Pelican box<br />
� Aluminum Frame
Power/Sensor<br />
� Sulfur Dioxide Sensor<br />
� Pump<br />
� Lithium batteries<br />
� Voltage Regulator
Circuitry<br />
� Basic Stamp<br />
� Humidity Sensor<br />
� LCD<br />
� Iridium modem<br />
� Analog to Digital Converter<br />
� Voltage Relay<br />
� Voltage Regulators<br />
� Time-Keeping Chip
Program<br />
� Regular mode<br />
� Collect and transmit data once an hour<br />
� Burst mode<br />
� Collect and transmit data once a minute<br />
� Low power mode<br />
� Conserve power when not collecting or<br />
sending data
Iridium Network<br />
� 66 Active Satellites<br />
� Near polar orbit<br />
http://www.iridium.com/about/networkperformance.htm
Sending Data from Modem
Looking Ahead<br />
� Deploy volcano monitor in early<br />
November<br />
� Connect more sensors and satellites to<br />
Sensor Web
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