Abstract
This paper describes our experiences using a wireless sensor network to monitor volcanic eruptions with low-frequency acoustic sensors. We developed a wireless sensor array and deployed it in July 2004 at Volcán Tungurahua, an active volcano in central Ecuador. The network collected infrasonic (low-frequency acoustic) signals at 102 Hz, transmitting data over a 9 km wireless link to a remote base station. During the deployment, we collected over 54 hours of continuous data which included at least 9 large explosions. Nodes were time-synchronized using a separate GPS receiver, and our data was later correlated with that acquired at a nearby wired sensor array. In addition to continuous sampling, we have developed a distributed event detector that automatically triggers data transmission when a well-correlated signal Is received by multiple nodes. We evaluate this approach in terms of reduced energy and bandwidth usage, as well as accuracy of infrasonic signal detection.
Original language | English (US) |
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Pages | 108-120 |
Number of pages | 13 |
DOIs | |
State | Published - Dec 1 2005 |
Externally published | Yes |
Event | 2nd European Workshop onWireless Sensor Networks, EWSN 2005 - Istanbul, Turkey Duration: Jan 31 2005 → Feb 2 2005 |
Conference
Conference | 2nd European Workshop onWireless Sensor Networks, EWSN 2005 |
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Country/Territory | Turkey |
City | Istanbul |
Period | 1/31/05 → 2/2/05 |
ASJC Scopus subject areas
- Engineering(all)