title: Lightweight filter architecture for energy efficient mobile vehicle localization based on a distributed acoustic sensor network.
abstract: The generic properties of an acoustic signal provide numerous benefits for localization by applying energy-based methods over a deployed wireless sensor network (WSN). However, the signal generated by a stationary target utilizes a significant amount of bandwidth and power in the system without providing further position information. For vehicle localization, this paper proposes a novel proximity velocity vector estimator (PVVE) node architecture in order to capture the energy from a moving vehicle and reject the signal from motionless automobiles around the WSN node. A cascade structure between analog envelope detector and digital exponential smoothing filter presents the velocity vector-sensitive output with low analog circuit and digital computation complexity. The optimal parameters in the exponential smoothing filter are obtained by analytical and mathematical methods for maximum variation over the vehicle speed. For stationary targets, the derived simulation based on the acoustic field parameters demonstrates that the system significantly reduces the communication requirements with low complexity and can be expected to extend the operation time considerably.
authors: Division of Electronics & Electrical Engineering, Dongguk University-Seoul, Seoul 100-715, Korea. kwkim@dongguk.edu
authors: Keonwook
authors: K
authors: Kim
mesh_terms: D000162:Acoustics / Q000295:instrumentation*; D000465:Algorithms; D001336:Automobiles; D003195:Computer Communication Networks / Q000295:instrumentation*; D011211:Electric Power Supplies; D004735:Energy Transfer; D004867:Equipment Design; D019544:Equipment Failure Analysis; D014159:Transducers
references: J Acoust Soc Am. 2007 Nov;122(5):2636-41
references: 18189555
references: Sensors (Basel). 2010;10(4):3100-25
references: 22319289
references: Sensors (Basel). 2012;12(8):10584-603
references: 23112617
references: Sensors (Basel). 2007 Nov 15;7(11):2779-2807
references: 28903261