Presented by : Rashmy Balasubramanian

 Aimed at saving endangered species of turtle in Ontario  The WSN gathers information regarding risks factors and habitat requirements  Project carried out by Queen’s University  Biologists and recovery teams will have real- time access via the Internet to data without costly field visits and without negatively impacting the species being studied.

 High Frequency Radio telemetry has historically been the most common method of tracking wildlife.  Disadvantages: Data collection performed infrequently and thus incomplete,cannot retask the network  Using WSN, GPS positioning gives accurate position information, that can be stored on the sensor node, whereas the RF transceiver can be used to transmit the data at desired intervals.

 Internet access  Network longevity  Management at a distance  Inconspicuous operation

 By using the RSSI (Received Signal Strength Indicator), the trilateration method can be used to accurately locate the turtle.  Sensor nodes operated using ZigBee technology  SQ-SEN-200 omnidirectional tilt and vibration sensor  Also various pressure, temperature and humidity sensors used

-Greater resolution both in time and space -WSN facilitates the collection of diverse types of data at frequent intervals over large. -WSN enable ecologists and field biologists to unobtrusively collect new types of data, providing new insights on processes. -Real-time data flows allow researchers to react rapidly to events, thus extending the laboratory to the field. -The numbers and locations of sensors can be chosen/optimized/changed -In general, the system is fault-tolerant. Any failure can be detected in real time. -Observing under extreme conditions -Reacting to events as they unfold -Controlled sensing: Sensing parameters can be remotely changed/ modified (e.g., frequency of sensing, data rate, type of data, sensing features, etc.)

 GPS & RF signals would be difficult to track while the turtles are under water. Hence, the tracking & transmission is done opportunistically, when the transceivers & antennas are exposed out of water.  Battery life is the biggest challenge in any WSN. Hence careful design & rigorous testing is involved to ensure the desired lifetime for the sensor node can be achieved.  Since tracking each turtle is important, the scenario of node failure is unacceptable.  In order to minimize the power consumption, the protocols used for RF communication have to be carefully chosen to ensure data is communicated accurately & in a timely manner.

 s/smcl/projects.html s/smcl/projects.html  A. Akhavan-Astaneh, A. Alemdar, and M. Ibnkahla, “Wireless sensor networks for wildlife monitoring: System architecture design”, Proc. International Workshop on Signal Processing and its Applications, Proc. International Workshop on Signal Processing and its Applications, WOSPA, UAE, March 2008  F. Al-Turjeman and M. Ibnkahla, “An overview of wireless sensor networks for ecology and forest monitoring”, Proc. International Workshop on Signal Processing and its Applications, WOSPA, UAE, March 2008