Deploying a Wireless Sensor Network on an Active Volcano

flangeeasyMobile - Wireless

Nov 21, 2013 (3 years and 11 months ago)

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788.11J Presentation


Deploying a Wireless Sensor Network
on an Active Volcano


Presented by

Ahmed Farouk Ibrahim Gaffer

Agenda


The main idea


General description


How it works


Main achievements


Requirements of Studying Active Volcanoes


Challenges


Pictures


Innovations


Future work

THE MAIN IDEA

General Description


Study an active volcanoes using a wireless sensor
network.


Use an array consisted of 16 node equipped with
seismoacoustic sensors deployed over 3 km.


The network is monitored and controlled by a
laptop base station, located at a makeshift
volcano observatory roughly 4 km from the
sensor network itself.


How It Work


When a node detects an interesting event, it
routes a message to the base station laptop.


If enough nodes report an event within a short
time interval, the laptop initiates data collection
protocol called Fetch.


The laptop downloads between 30 and 60
seconds of data from each node using a reliable
data collection protocol (Fetch).


How It Work (cont)


ensuring that the system retrieves all buffered
data from the event.


When data collection completes, nodes return to
sampling and storing sensor data.


MAIN ACHIEVEMENTS

The Main Achievements



The new node are smaller, lighter, and consume
less power.


Developed a reliable data collection protocol


Real
-
time network control and monitoring for
data
-
acquisition equipments


REQUIREMENTS OF
STUDYING ACTIVE
VOLCANOES

Requirements of Studying Active Volcanoes


high data rates,


high data fidelity,


Sampled data to be accurately time stamped,


sparse arrays with high spatial separation
between nodes.

CHALLENGES

The Challenges


Low Radio Bandwidth of the network


The physical deployment of the network


The study requires high data fidelity, high data
rates and sparse arrays with high spatial separation
between nodes


Reliable data Transmission and Time
Synchronization



PICTURES

Deployment site

Reventador Volcano, Ecuador

System Design

Network Topology

Sensor Deployment Map

The node

INNOVATION

Innovation


Event Based Triggering


Use a local buffer (memory) to store data


Signal Processing


Developed a reliable data
-
collection protocol
(called fetch) to retrieve buffered data from each
node


Long
-
Distance radio link between the observatory
and the sensor network

Future Work


Improving sensor
-
network design and pursuing
additional deployments at active volcanoes


focus on improving event detection and
prioritization


optimizing the data collection path


deploy a much larger (100
-
node) array for
several months, with continuous Internet
connectivity via a satellite uplink

QUESTIONS

THANK YOU