With novel underwater wireless sensor array network (UWSAN) architecture that consists of multiple distributed arrays of acoustic sensors, maximum likelihood localization based on acoustic energy is proposed for solvi...
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ISBN:
(纸本)9781424437092
With novel underwater wireless sensor array network (UWSAN) architecture that consists of multiple distributed arrays of acoustic sensors, maximum likelihood localization based on acoustic energy is proposed for solving the source localization in underwater and low signal to noise ratio. the exactly maximum likelihood (ML) target location estimator is derived. Very impressive simulation results demonstrated the feasibility of such a new approach for underwater wireless sensor network (UWSN). And comparison withthe single sensor UWSN, the performance of localization is improved, especially in low SNR.
this research-in-progress proposes an approach that accounts for social and institutional issues in the design and implementation of sensor networks for air-quality monitoring. the proposed approach is evaluated throu...
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ISBN:
(纸本)9781728105703
this research-in-progress proposes an approach that accounts for social and institutional issues in the design and implementation of sensor networks for air-quality monitoring. the proposed approach is evaluated through action research, in an initiative that seeks to enhance the air-quality sensor network of a Megalopolis based on data analytics. Preliminary findings indicate that the proposed approach improves access to resources, enhances the validity of design, and increases buy-in for implementation.
High level context recognition and situation detection are enabling technologies for unobtrusive mobile computingsystems. Significant progress has been made in processing and managing context information, leading to ...
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ISBN:
(纸本)9781424477425
High level context recognition and situation detection are enabling technologies for unobtrusive mobile computingsystems. Significant progress has been made in processing and managing context information, leading to sophisticated frameworks, middlewares, and algorithms. Despite great improvements, context aware systems still require a significantly increased recognition accuracy for high-level context information on uncertain sensor data to enable the robust execution of context-aware applications. Recently Adaptable Pervasive Work-flows (APF)s have been presented as innovative programming paradigm for mobile context-aware applications. We propose a novel Flow Context System (FlowCon) that builds upon APFs. FlowCon uses structural information from the APF to increase accuracy of uncertain high-level context information up to 49%. this way we make an important step to enable robust execution of mobile context-aware applications.
Current localization algorithms for Ad-hoc wireless sensor networks are categorized either as distributed or centralized ones. Typical distributed algorithms include DV-hop, DV-distance [1], etc., which need the deplo...
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ISBN:
(纸本)9781424421701
Current localization algorithms for Ad-hoc wireless sensor networks are categorized either as distributed or centralized ones. Typical distributed algorithms include DV-hop, DV-distance [1], etc., which need the deployment of certain amount of anchor nodes-, on the contrary, the centralized algorithms, such as MDS-MAP [3], need less anchor nodes, while the computation complexity is higher as a result of centralized computing. In this paper, a hierarchical and partial-distributed scheme for Ad-hoc wireless sensor networks is proposed. the scheme can be implemented with lower computation complexity and less anchor nodes;moreover, the transmission of localization information among different nodes is easier than that in the scheme utilizing completely distributed algorithms. In addition, the implementation approach of the scheme in NS-2 is given in the simulation section.
In the current era, Wireless sensor Networks (WSNs) and Internet of things (IoT) have been considered as two very attractive subjects in both industry and research community. the resource-constraint characteristics of...
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ISBN:
(纸本)9781509014828
In the current era, Wireless sensor Networks (WSNs) and Internet of things (IoT) have been considered as two very attractive subjects in both industry and research community. the resource-constraint characteristics of physical objects in those networks presumably limit the secure design and development of security protocols. Whilst, sensor nodes which usually operate in unattended and even harsh environments, are prone to failures and malicious attacks. Misbehavior node detection is therefore an important issue to assure quick recovery and reliable functioning of the networks. In this paper, we present a misbehavior node detection algorithm using weighted-link in a hierarchical 6LoWPAN (IPv6 over Low power Wireless Personal Area Networks) sensor network. We also evaluate the algorithm by a number of experiments over a real testbed.
Wireless sensor network (WSN) becomes a research hotspot of structural health monitoring(SHM) withthe characteristics such as convenience for remote monitoring, good fault-tolerant ability, easiness of system mainten...
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ISBN:
(纸本)9781424437092
Wireless sensor network (WSN) becomes a research hotspot of structural health monitoring(SHM) withthe characteristics such as convenience for remote monitoring, good fault-tolerant ability, easiness of system maintenance, etc. In this paper, a WSN for bridge SHM is designed and deployment on the ZhengDian viaduct in Wuhan. In this deployment, 20 wireless nodes are distributed over the main span, collecting the ambient vibrations at 200Hz. the collected data agrees withtheoretical models and previous studies of the bridge.
this study designs and implements an embedded system-based distributed private cloud (EBDPC), which is a real-time analyzing device used in a wireless sensor network (WSN) monitoring system application. the proposed s...
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ISBN:
(纸本)9781479961238
this study designs and implements an embedded system-based distributed private cloud (EBDPC), which is a real-time analyzing device used in a wireless sensor network (WSN) monitoring system application. the proposed system consists of several low cost embedded systems for the detection, classification, and measurement of six types of power quality events, including impulse, voltage sag, voltage swell, interruption, harmonics, and flicker. Fast Fourier Transform (FFT) methods are used for automatic signal classification and characterization, and real-time notification for disturbance detection. A light-weighted load balance algorithm is also included in the proposed system for handling a great amount of data collected from electric sensors. the system has been successfully applied to detecting, classifying, and measuring disturbances in a power quality monitoring WSN.
In this paper, we investigate the manner in which energy consumption in drone deliveries is affected by windy environmental conditions. We know in fact that the energy consumption of the drone will depend on the stati...
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ISBN:
(纸本)9781665439299
In this paper, we investigate the manner in which energy consumption in drone deliveries is affected by windy environmental conditions. We know in fact that the energy consumption of the drone will depend on the static and dynamic parameters of the scenario where it moves and according to these it decides, during the mission, to detour from the originally planned path to take advantage of the wind changes. In order to validate this, we simulate possible deliveries among fixed destinations relying on a real data-set of recorded winds obtained from different weather stations in Corsica, France. For our analysis, we will mainly concentrate on the evaluation of the delivery scheme proposed in the literature, where completing a delivery means finding a cycle for the drone that is feasible, i.e., that can be completed withthe available energy autonomy of the drone.
this paper discusses a grid-type sensor network with reconfigurable PSoCs as sensor nodes, and details the middleware routines that support the high-level model for distributed programming. the advantages of using rec...
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ISBN:
(纸本)9781424444465
this paper discusses a grid-type sensor network with reconfigurable PSoCs as sensor nodes, and details the middleware routines that support the high-level model for distributed programming. the advantages of using reconfigurable PSoCs over other architectures, like MICA2 motes, are also discussed. the paper refers to a case study to illustrate the capabilities of the proposed network concept.
this paper describes the development of an experimental wireless sensor network (WSN) testbed for studying the nature of irradiance measurements at the sensor nodes that are deployed at different points in the WSN, an...
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ISBN:
(纸本)9781728143514
this paper describes the development of an experimental wireless sensor network (WSN) testbed for studying the nature of irradiance measurements at the sensor nodes that are deployed at different points in the WSN, and oriented differently depending on the deployment geometry. the network was developed on the roof of an academic building at the University of North Carolina at Charlotte (UNC Charlotte), where the sensor nodes are equipped with pyranometer sensors to periodically collect the irradiance measurements at different points and send then to a centralized base station using multi-hop communication. the collected data is analyzed to demonstrate the spatial and temporal variation of energy availability at each individual node, resulting from the localized variations in the light levels.
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