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Georgia Institute of Technology – Senior Design Project 3 Design Objectives Monitor outdoor area up 10,000 square meters Detect hazardous thermal activity with onboard heat sensors Program with energy efficient algorithm Wirelessly transfer data readings from sensors to computer Provide a basic structure for research groups focused on energy efficient wireless networks
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Thermal Detecting Wireless Sensor Network
Presenters: Joseph Roberson, Gautam Ankala, and Jessica CurryFaculty Advisor: Dr. Linda MilorECE 4007: Final Presentation
Georgia Institute of TechnologySchool of Electrical and Computer Engineering
December 2, 2008
Georgia Institute of Technology – Senior Design Project 2
Project Overview
Monitor continuously thermal activity in environmental areas such as wildlife and forests. Detect hazardous thermal conditions using Crossbow motes and onboard sensors
Final cost of one unit is $2500, which includes four wireless sensors, software, and programming board. Primary consumer is wildlife and forest agencies
Program motes with algorithm that efficiently routes data through wireless sensor network
Transmit real-time data wirelessly to computer base station for analysis and response to threatening conditions
Georgia Institute of Technology – Senior Design Project 3
Design Objectives
Monitor outdoor area up 10,000 square meters
Detect hazardous thermal activity with onboard heat sensors
Program with energy efficient algorithm
Wirelessly transfer data readings from sensors to computer
Provide a basic structure for research groups focused on energy efficient wireless networks
Georgia Institute of Technology – Senior Design Project
Proposed Network
Transceiver node– Communicate with PC– Receive information packet
from nodes– Transmit or receive data
Intermediate Nodes– Forward data to transceiver
node– Send information packets
periodically– Programmed with CSMA/CA
protocol
Georgia Institute of Technology – Senior Design Project 5
Proposed Versus Final Network
Transceiver Node– Does not sense environment– Connected to base station via
USB
Intermediate Node– CSMA/CA protocol not
implemented in sensor network– Wirelessly sends packets to
transceiver node based on timing interval
Georgia Institute of Technology – Senior Design Project 6
Code Programmed at Transceiver Node
TOSBase - <tos>/apps/TOSBase Sets up the communication between PC and nodes Receives data from intermediate node and forwards to PC
Intermediatenode
Transceivernode
(cluster head)
PC(base station)
radio USBTOSBaseMTS400
Georgia Institute of Technology – Senior Design Project 7
Code Programmed at Intermediate Nodes
MTS400 - <tos>/apps/MTS400 Broadcast data to the transceiver node Includes Temperature threshold component
– Returns TRUE: measured thermal intensity > threshold– Returns FALSE: measured thermal intensity < threshold
TransceiverNode
(TOSBase)
Temp
Intermediate Node(MTS400)
Base Station
Georgia Institute of Technology – Senior Design Project 8
Cygwin Console Cygwin is a collection of tools developed by Cygnus
Solutions which provides a command line and programming interface for the micas
XListen is a Cygwin C console program written in C that receives radio packets from the Mote and converts to engineering units
Georgia Institute of Technology – Senior Design Project 9
Moteview
Sensor 2Sensor 1
Cluster Head
Topology Chart
HeatTemperature
Georgia Institute of Technology – Senior Design Project 10
Acceptance Testing Received alert message when threshold reaches 40° C Verified sensor readings for multiple sensors Read data information in Moteview and Excel
Georgia Institute of Technology – Senior Design Project 11
Possible Future Improvements
Test larger sensor network
Create environment and test sensors
Implement CSMA/CA protocol
Determine cluster head automatically
Georgia Institute of Technology – Senior Design Project 12
Conclusion
Able to receive data for multiple sensors and receive alert messages once threshold is reached
For $2500, a good solution for homeowners and environmental areas
Good step towards future development in creating products for wildfire detection
Georgia Institute of Technology – Senior Design Project 13
Questions