نتایج جستجو برای: sensor placement

تعداد نتایج: 261361  

2003
Santpal Singh Dhillon Krishnendu Chakrabarty

We present two algorithms for the efficient placement of sensors in a sensor field. The proposed approach is aimed at optimizing the number of sensors and determining their placement to support distributed sensor networks. The optimization framework is inherently probabilistic due to the uncertainty associated with sensor detections. The proposed algorithms address coverage optimization under t...

Journal: :IJCNIS 2013
Husna Zainol Abidin Norashidah Md Din Nurul Asyikin Mohamed Radzi

An optimum sensor node placement mechanism for Wireless Sensor Network (WSN) is desirable in ensuring the location of sensor nodes that offers maximum coverage and connectivity with minimum energy consumption. This paper proposes a sensor node placement algorithm that utilizes a new biologically inspired optimization algorithm that imitates the behaviour of territorial predators in marking thei...

A. R. Mirza Goltabar Roshan, F. Zahedi Tajrishi,

This paper is concerned with the determination of optimal sensor locations for structural modal identification in a strap-braced cold formed steel frame based on an improved genetic algorithm (IGA). Six different optimal sensor placement performance indices have been taken as the fitness functions two based on modal assurance criterion (MAC), two based on maximization of the determinant of a Fi...

2004
Qi Zhang Xiaodong Wang Dharma P. Agrawal

The main function of a wireless sensor network is to sense the outside environment and report the data to a processing center. Therefore, both sensing and communication roles should be considered for a sensor network. Except for the mobility aspect, sensor networks inherit almost all properties of ad hoc networks. Therefore, sensor nodes are supposed to report data to a common sink instead of s...

Journal: :Environmental Modelling and Software 2016
Weijiao Gong Mahima Agumbe Suresh Lidia Smith Avi Ostfeld Radu Stoleru Amin Rasekh M. Katherine Banks

Leak and backflow detections are essential aspects of Water Distribution Systems (WDSs) monitoring and are commonly fulfilled using approaches that are based on static sensor networks and point measurements. Alternatively, we propose a mobile, wireless sensor network solution composed of mobile sensor nodes that travel freely inside the pipes with the water flow, collect and transmit measuremen...

2006
Chih-Yung Chang Kuei-Ping Shih Hsu-Ruey Chang Hsiao-Jung Liu

In wireless sensor networks (WSNs), nodes closer to the sink node have heavier traffic load for packet forwarding. The unbalanced power consumption among sensor nodes may cause network partition. This paper proposes efficient node placement and topology control protocols to balance the power consumption of sensor nodes. Firstly, a virtual tree topology is constructed based on Grid-based WSNs. T...

Journal: :Water research 2013
Kegong Diao Wolfgang Rauch

Detection of contamination events in water distribution systems is a crucial task for maintaining water security. Online monitoring is considered as the most cost-effective technology to protect against the impacts of contaminant intrusions. Optimization methods for sensor placement enable automated sensor layout design based on hydraulic and water quality simulation. However, this approach res...

Journal: :IEEE Trans. Computers 2002
Krishnendu Chakrabarty S. Sitharama Iyengar Hairong Qi Eungchun Cho

We present novel grid coverage strategies for effective surveillance and target location in distributed sensor networks. We represent the sensor field as a grid (two or three-dimensional) of points (coordinates) and use the term target location to refer to the problem of locating a target at a grid point at any instant in time. We first present an integer linear programming (ILP) solution for m...

2017
Numa Joy Bertola Maria Papadopoulou Didier Gabriel Vernay Ian F. C. Smith

Assessing ageing infrastructure is a critical challenge for civil engineers due to the difficulty in the estimation and integration of uncertainties in structural models. Field measurements are increasingly used to improve knowledge of the real behavior of a structure; this activity is called structural identification. Error-domain model falsification (EDMF) is an easy-to-use model-based struct...

2014
Stacey Schal L. Sebastian Bryson Lindell Ormsbee

Efforts to improve water security have led to the development of Contamination Warning Systems (CWS) aimed at providing early indication of contamination, accidental or intentional, in drinking water systems. Sensors that detect changes in water quality are a critical component. Because the extent of any monitoring system is constrained by a limited budget, focus is placed on optimizing the pla...

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