Title :
On the Performance of Asynchronous Sensor Networks for Detection
Author :
Narayanan, Sriram ; Jones, Douglas L.
Author_Institution :
Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign Urbana, IL 61801, spnaraya@uiuc.edu
Abstract :
Energy efficiency is of principal concern when designing sensor networks for distributed measurement applications. Wireless sensor networks comprising many energy-efficient nodes with asynchronous sleep/awake cycles offer a low power, cost effective and simple alternative to planned and synchronized networks. Detecting the presence of a target is a common problem in many sensor network applications. We develop a mathematical model to represent an asynchronous sensor network and provide a comparison of this type of a network against a benchmark scheduled network for a detection application. This comparison is drawn first assuming that the probability of detection is one if the target is present within a sensing radius of a sensor node. A more realistic comparison of the networks is then made by relaxing this assumption. We show that for applications where a moderate detection coverage is sufficient, the asynchronous sensor network compares well with a scheduled network and is thus a promising alternative to traditional sensor network architectures.
Keywords :
Acoustic sensors; Acoustic signal detection; Costs; Energy efficiency; Energy measurement; Maintenance; Pollution measurement; Protocols; Sensor phenomena and characterization; Wireless sensor networks;
Conference_Titel :
Intelligent Sensors, Sensor Networks and Information Processing Conference, 2005. Proceedings of the 2005 International Conference on
Print_ISBN :
0-7803-9399-6
DOI :
10.1109/ISSNIP.2005.1595586