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Development of Laguerre neural-network-based intelligent sensors for wireless sensor networks

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Development of Laguerre neural-network-based intelligent sensors for wireless sensor networks

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Title: Development of Laguerre neural-network-based intelligent sensors for wireless sensor networks
Author: Patra, Jagdish Chandra; Meher, Pramod Kumar; Chakraborty, Goutam
Copyright year: 2011
Abstract: The node of a wireless sensor network (WSN), which contains a sensor module with one or more physical sensors, may be exposed to widely varying environmental conditions, e.g., temperature, pressure, humidity, etc. Most of the sensor response characteristics are nonlinear, and in addition to that, other environmental parameters influence the sensor output nonlinearly. Therefore, to obtain accurate information from the sensors, it is important to linearize the sensor response and compensate for the undesirable environmental influences. In this paper, we present an intelligent technique using a novel computationally efficient Laguerre neural network (LaNN) to compensate for the inherent sensor nonlinearity and the environmental influences. Using the example of a capacitive pressure sensor, we have shown through extensive computer simulations that the proposed LaNN-based sensor can provide highly linearized output, such that the maximum full-scale error remains within ± 1.0% over a wide temperature range from -50 °C to 200 °C for three different types of nonlinear dependences. We have carried out its performance comparison with a multilayer-perceptron-based sensor model. We have also proposed a reduced-complexity run-time implementation scheme for the LaNN-based sensor model, which can save about 50% of the hardware and reduce the execution time by four times, thus making it suitable for the energy-constrained WSN applications.
Subject: DRNTU::Engineering::Electrical and electronic engineering::Control and instrumentation
Type: Journal Article
Series/ Journal Title: IEEE transactions on instrumentation and measurement
School: School of Computer Engineering
Rights: © 2008 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at: [DOI: http://dx.doi.org/10.1109/TIM.2010.2082390].
Version: Accepted version

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