On the feasibility of using servo-mechanisms in wireless multimedia sensor network deployments
O'Rourke, Damien, Jurdak, Raja, Liu, Junbin, Moore, Darren, & Wark, Tim (2009) On the feasibility of using servo-mechanisms in wireless multimedia sensor network deployments. In Local Computer Networks, 2009. LCN 2009. IEEE 34th Conference on, IEEE, Zurich, Switzerland, pp. 826-833.
This paper considers the use of servo-mechanisms as part of a tightly integrated homogeneous Wireless Multi- media Sensor Network (WMSN). We describe the design of our second generation WMSN node platform, which has increased image resolution, in-built audio sensors, PIR sensors, and servo- mechanisms. These devices have a wide disparity in their energy consumption and in the information quality they return. As a result, we propose a framework that establishes a hierarchy of devices (sensors and actuators) within the node and uses frequent sampling of cheaper devices to trigger the activation of more energy-hungry devices. Within this framework, we consider the suitability of servos for WMSNs by examining the functional characteristics and by measuring the energy consumption of 2 analog and 2 digital servos, in order to determine their impact on overall node energy cost. We also implement a simple version of our hierarchical sampling framework to evaluate the energy consumption of servos relative to other node components. The evaluation results show that: (1) the energy consumption of servos is small relative to audio/image signal processing energy cost in WMSN nodes; (2) digital servos do not necessarily consume as much energy as is currently believed; and (3) the energy cost per degree panning is lower for larger panning angles.
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|Item Type:||Conference Paper|
|Keywords:||wireless sensor networks , energy consumption, servo-mechanisms|
|Subjects:||Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Electrical and Electronic Engineering not elsewhere classified (090699)|
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Institutes > Information Security Institute
Past > Schools > School of Engineering Systems
|Copyright Owner:||Copyright 2009 IEEE|
|Deposited On:||08 Nov 2010 23:25|
|Last Modified:||10 Aug 2011 16:36|
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