Demonstration of a Wireless Sensor Network for Real-Time Indoor Localisation and Motion Monitoring

Klingbeil, Lasse; Wark, Tim

doi:10.1109/ipsn.2008.16

Cited by 8 publications

References 3 publications

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Developing a data‐transfer model for a novel Wildlife‐tracking network

Davis

Thokala

Xing

et al. 2012

Wildlife Society Bulletin

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The use of low-cost, advanced global positioning system (GPS) telemetry devices for wildlife tracking is growing in popularity, especially use of systems that can communicate with each other to track contacts or transfer data. We evaluated the communication and data-transfer capabilities of a low-cost, custom-built GPS telemetry system with an on-board wireless sensor network using human subjects and captive bighorn sheep (Ovis canadensis) as an experimental model. We conducted tests in July 2010, at 2 facilities in Colorado, USA. Wireless sensor networks use a collection of nodes to ferry data from one destination to another. We tested data-transfer capabilities at several transmission strengths (À25 decibelmilliwatts (dBm), À15 dBm, À10 dBm, À5 dBm, and 0 dBm) and with several types of bodily obstruction (unobstructed, human, bighorn sheep). Under conditions of high transmission strength and low obstruction, a log-logistic decay curve was the best model for data-transfer success. Contrastingly, under conditions of low transmission strength and high obstruction, data transfer was noisier, and was best represented by a linear model. Obstruction resulting from the placement of the collar in relation to the subject's body adversely affected the communication abilities of our system, with bighorn sheep lowering baseline data-transfer success to <50% at low transmission strengths. Obstruction also affected the distance of data transfer for each transmission strength, but bighorn sheep had less of an impact than did humans. Wireless sensor node manufacturers recommend an optimum communications distance for each possible transmission strength, but we suggest that managers calibrate the communications systems of their in-house-constructed GPS telemetry systems, preferably by using the target animal subject, in order to optimize operation in field conditions. ß 2012 The Wildlife Society.

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Developing a data‐transfer model for a novel Wildlife‐tracking network

Davis

Thokala

Xing

et al. 2012

Wildlife Society Bulletin

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Semantic Visualization of Wireless Sensor Networks for Elderly Monitoring

Stocklöw

Kamieth

2010

Lecture Notes in Computer Science

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Mobility-Assisted Localization Techniques in Wireless Sensor Networks: Issues, Challenges and Approaches

Halder¹,

Ghosal²

2014

Studies in Computational Intelligence

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Abstract. Many network operations and applications of wireless sensor networks (WSNs) need sensor nodes for obtaining their locations. Sensor nodes equipped with geographical positioning system (GPS) devices are aware of their locations at a precision level of few meters. However, installing GPS devices on a large number of sensor nodes is not only costly but affects the form factor of these sensor nodes. Moreover, GPS-based localization is not applicable in indoor environments such as buildings. There exists an extensive amount of research literature that aims at obtaining absolute locations as well as relative spatial locations of sensor nodes in a wireless sensor network without requiring specialized hardware at large scale. The typical approach that significantly reduces the cost is replacing the large set of statically deployed GPS-enhanced sensor nodes with limited number of mobile anchors. These mobile anchors are aware of their own locations and move in order to cover the entire network, and then try to infer locations of sensor nodes using various techniques e.g. geometric, statistical etc. Thus, keeping this in mind the chapter presents key issues and inherent challenges faced by the mobility-assisted localization techniques in WSNs. Also, we take a close look at the algorithmic approaches of various important fine-grained mobility-assisted localization techniques applicable for low power, resource constrained and highly distributed sensor nodes.

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Demonstration of a Wireless Sensor Network for Real-Time Indoor Localisation and Motion Monitoring

Abstract: Abstract

Cited by 8 publications

References 3 publications

Developing a data‐transfer model for a novel Wildlife‐tracking network

Developing a data‐transfer model for a novel Wildlife‐tracking network

Semantic Visualization of Wireless Sensor Networks for Elderly Monitoring

Mobility-Assisted Localization Techniques in Wireless Sensor Networks: Issues, Challenges and Approaches

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