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共 262 条记录，以下是151-160 订阅

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Bin-MAC: A Hybrid MAC for Ultra-compact Wireless sensor Nodes

Bin-MAC: A Hybrid MAC for Ultra-compact Wireless Sensor Node...

引用

international conference on distributed computing in sensor systems (dcoss)

作者： Vahid Salmani Pai H. Chou Center for Embedded Computer Systems University of California Irvine CA USA University of California Irvine CA USA National Tsinghua University Taiwan

this paper presents a light-weight hybrid protocol called Bin-MAC (Binary Medium Access Control) for highly resource-constrained wireless sensor nodes. In addition to simplicity and low footprint, a distinguishing feature of Bin-MAC is its deterministic contention resolution mechanism, which enables it to achieve bounded latency on data transmissions. As a result, Bin-MAC can be applied to delay-sensitive applications with real-time constraints, a feature not provide by most of the existing hybrid protocols. Another feature of the proposed protocol is that it requires carrier-sensing hardware only on the base station side, and sensor nodes do not have to possess such capability. Bin-MAC does not require clock synchronization, and thus clock drifts have no impact on its performance. Experimental results show Bin-MAC to be scalable and able to handle large network sizes without noticeable performance degradation.

关键词： Wireless sensor networks Synchronization sensors Multiaccess communication Media Access Protocol Wireless communication

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Target Tracking with Limited Sensing Range in Autonomous Mobile sensor Networks

Target Tracking with Limited Sensing Range in Autonomous Mob...

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international conference on distributed computing in sensor systems (dcoss)

作者： Jing Bai Peng Cheng Jiming Chen Adrien Guenard Yeqiong Song State Key Laboratory of Industrial Control Technology University of Zhejiang Hangzhou China LORIA University of Lorraine France

As technology advancements in robotics and wireless communication, tracking mobile targets using mobile sensors has aroused widespread concern in recent years. In this paper, we propose a novel coordinative moving strategy for autonomous mobile sensor networks to guarantee the target can be detected in each observed step while minimizing the amount of moving sensors. the proposed scheme consists of obtaining the current position of the target, which is then used to predict the next time-step location of the target. Once the uncertainty region of the target's position is defined, the proposed method allows the mobile sensors to cover it in an optimal way. therefore, we can assign each mobile sensor to an optimal location to cover the uncertainty region while minimizing the total traveled distance of sensors. Extensive simulations are given to evaluated performance and demonstrate the efficiency of the proposed strategy.

关键词： Mobile communication Robot sensing systems Target tracking Uncertainty Mathematical model

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A Fire Detection System Using Multi-sensor Networks Based on Fuzzy Logic in Indoor Scenarios 8

A Fire Detection System Using Multi-Sensor Networks Based on...

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8th international conference on Information and Communication Technology, ICoICT 2020

作者： Rachman, Fathur Zaini Hendrantoro, Gamantyo Wirawan Institut Teknologi Sepuluh Nopember Department of Electrical Engineering Surabaya Indonesia State Polytechnic of Balikpapan Balikpapan Indonesia

ISBN: (纸本)9781728161426

this paper presents the development of a fire detection system using a wireless multi-sensor network based on fuzzy logic rules. Until recently, the fire detection systems have been limited in the coverage area and installation of the device, so that the sensitivity of the sensor becomes limited indoor. this research proposes the use of multi-sensor system to detect indoor phenomena. the Fuzzy logic method is used to process data on multiple sensors and the cluster head (CH). the result of multi-sensor data processing is the condition level on the end device (ED). the test results show that the data processing using fuzzy logic for the measurements from distributed sensors reduces the data storage and computing complexity at the fusion center (FC). Fire detection application (FDA) displays the status condition (SC), where data sources from multi-sensor nodes are displayed as room conditions. © 2020 ieee.

关键词： Fuzzy logic

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Network Lifetime Maximization in Delay-Tolerant sensor Networks with a Mobile Sink

Network Lifetime Maximization in Delay-Tolerant Sensor Netwo...

引用

international conference on distributed computing in sensor systems (dcoss)

作者： Zichuan Xu Weifa Liang Yinlong Xu Research School of Computer Science Australian National University Canberra ACT Australia School of Computer Science and Technology University of Science and Technology Hefei Anhui China

In this paper we investigate the network lifetime maximization problem in a delay-tolerant wireless sensor network with a mobile sink by exploiting a nontrivial tradeoff between the network lifetime and the data delivery delay. We formulate the problem as a joint optimization problem that consists of finding a trajectory for the mobile sink and designing an energy-efficient routing protocol to route sensing data to the sink, subject to the bounded delay on data delivery and the given potential sink location space. Due to NP-hardness of the problem, we then propose a novel optimization framework, which not only prolongs the network lifetime but also improves the other performance metrics including the network scalability, robustness, and the average delivery delay. We finally conduct extensive experiments by simulations to evaluate the performance of the proposed algorithm against other heuristics. the experimental results demonstrate that the proposed algorithm outperforms the others significantly in terms of network lifetime prolongation.

关键词： Mobile communication Trajectory Delay Vegetation Energy consumption Mobile computing Routing

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Adaptive Data Storage for Querying in Wireless sensor Networks

Adaptive Data Storage for Querying in Wireless Sensor Networ...

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8th international conference on Wireless Communications, Networking and Mobile computing (WiCOM)

作者： Liu, Zhidan Xing, Wei Lu, Dongming Wang, Yongchao Zhejiang Univ Coll Comp Sci & Technol Hangzhou 310003 Zhejiang Peoples R China

ISBN: (纸本)9781612846835;9781612846828

In this paper, an adaptive storage method which can dynamically adopt suitable storage mode based on the computation of potential costs according to statistics of event data rate and query rate is proposed. We envision queries for event data following a biased distribution, i.e. Zipf-like distribution, just like the situation in real file sharing systems. In our proposed method, system can switch the storage mode between external storage and data-centric storage adaptively for different types of event data according to their popularity. Simulation results demonstrate that our proposed method is a feasible and energy-efficient data storage method.

关键词： Wireless sensor networks

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Proceedings - ieee/IFIP international conference on Embedded and Ubiquitous computing, EUC 2010

Proceedings - IEEE/IFIP International Conference on Embedded...

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ieee/IFIP 8th international conference on Embedded and Ubiquitous computing, EUC 2010

ISBN: (纸本)9780769543222

the proceedings contain 125 papers. the topics discussed include: schedule swapping: a technique for temperature management of distributed embedded systems;user-level network protocol stacks for automotive infotainment systems;replay debugging for multi-threaded embedded software;optimizing runtime reconfiguration decisions;architectural support for reducing parallel processing overhead in an embedded multiprocessor;trading conditional execution for more registers on ARM processors;co-simulation of self-adaptive automotive embedded systems;empirical evaluation of content-based pub/sub systems over cloud infrastructure;a reflective service gateway for integrating evolvable sensor-actuator networks with pervasive infrastructure;handling mobility on a QoS-aware service-based framework for mobile systems;trust measurement methods in organic computing systems by direct observation;and rule-based approach for context inconsistency management scheme in ubiquitous computing.

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Model-driven performance engineering for wireless sensor networks with feature modeling and event calculus

Model-driven performance engineering for wireless sensor net...

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3rd Workshop on Bio-Inspired and Self-Algorithms for distributed systems, Co-located with the 8th ieee/ACM international conference on Autonomic computing, ICAC 2011

作者： Boonma, Pruet Suzuki, Junichi Department of Computer Engineering Chiang Mai University Chiang Mai 50200 Thailand Department of Computer Science University of Massachusetts Boston MA 02125 United States

ISBN: (纸本)9781450307338

this paper proposes and evaluates a model-driven performance engineering framework for wireless sensor networks (WSNs). the proposed framework, called Moppet, is designed for application developers to rapidly implement WSN applications and estimate their performance. It leverages the notion of feature modeling so that it allows developers to graphically and intuitively specify features (e.g., functionalities and configuration policies) in their applications. It also validates a set of constraints among features and generates application code. Moppet also uses event calculus in order to estimate a WSN application's performance without generating its code nor running it on simulators and real networks. Currently, it can estimate power consumption and lifetime of each sensor node. Experimental results show that, in a small-scale WSN of 16 iMote nodes, Moppet's average performance estimation error is 8%. In a large-scale simulated WSN of 400 nodes, its average estimation error is 2%. Moppet scales well to the network size with respect to estimation accuracy. Moppet generates lightweight nesC code that can be deployed with TinyOS on resource-limited nodes. the current experimental results show that Moppet is well-applicable to implement biologically-inspired routing protocols such as pheromone-based gradient routing protocols and estimate their performance. © 2011 ACM.

关键词： Calculations

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CINET: A CyberInfrastructure for Network Science

CINET: A CyberInfrastructure for Network Science

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ieee 8th international conference on E-Science (e-Science)

作者： Abdelhamid, Sherif Elmeligy Alo, Richard Arifuzzaman, S. M. Beckman, Pete Bhuiyan, Md Hasanuzzaman Bisset, Keith Fox, Edward A. Fox, Geoffrey C. Hall, Kevin Hasan, S. M. Shamimul Joshi, Anurodh Khan, Maleq Kuhlman, Chris J. Lee, Spencer Leidig, Jonathan P. Makkapati, Hemanth Marathe, Madhav V. Mortveit, Henning S. Qiu, Judy Ravi, S. S. Shams, Zalia Sirisaengtaksin, Ongard Subbiah, Rajesh Swarup, Samarth Trebon, Nick Vullikanti, Anil Zhao, Zhao Virginia Tech Blacksburg VA 24061 USA

ISBN: (纸本)9781467344661;9781467344678

Networks are an effective abstraction for representing real systems. Consequently, network science is increasingly used in academia and industry to solve problems in many fields. Computations that determine structure properties and dynamical behaviors of networks are useful because they give insights into the characteristics of real systems. We introduce a newly built and deployed cyberinfrastructure for network science (CINET) that performs such computations, with the following features: (i) it offers realistic networks from the literature and various random and deterministic network generators;(ii) it provides many algorithmic modules and measures to study and characterize networks;(iii) it is designed for efficient execution of complex algorithms on distributed high performance computers so that they scale to large networks;and (iv) it is hosted with web interfaces so that those without direct access to high performance computing resources and those who are not computing experts can still reap the system benefits. It is a combination of application design and cyberinfrastructure that makes these features possible. To our knowledge, these capabilities collectively make CINET novel. We describe the system and illustrative use cases, with a focus on the CINET user.

关键词： distributed computer systems

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A Ubiquitous Publish/Subscribe Platform for Wireless sensor Networks with Mobile Mules

A Ubiquitous Publish/Subscribe Platform for Wireless Sensor ...

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international conference on distributed computing in sensor systems (dcoss)

作者： Xiaoyu Tong Edith C.H. Ngai Department of Information Technology University of Uppsala Sweden

Existing publish/subscribe architectures for wireless sensors networks only support stationary sensors interconnected with each other. they cannot handle mobile sensors or remote sensors that are sparsely deployed. In this paper, we propose a novel ubiquitous publish/subscribe system that supports data access from both mobile sensors and stationary sensors. Our system utilizes mobile phones as data mules to relay subscriptions and published data between broker and remote sensors. It provides content-based publish/subscribe services from sensors deployed anywhere without depending on any network infrastructure. We implement our publish/subscribe platform on real hardwares and test it in a hiking trail application. the application allows users to subscribe for sensing data from both stationary sensors and mobile sensors along hiking trails. Extensive experiments are conducted in an outdoor testbed to evaluate the system performances such data delay, number of data received and communication overhead.

关键词： Subscriptions Wireless sensor networks sensors Mobile communication Mobile handsets Wireless communication Internet

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LoCaF: Detecting Real-World States with Lousy Wireless Cameras

LoCaF: Detecting Real-World States with Lousy Wireless Camer...

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international conference on distributed computing in sensor systems (dcoss)

作者： Benjamin Meyer Richard Mietz Kay Romer Institute of Computer Engineering University of Lübeck Germany

the Internet of things (IoT) integrates wireless sensors to provide online and real-time access to the state of things and places. However, many interesting real-world states are difficult to detect with traditional scalar sensors. Tiny wireless camera sensor nodes are an interesting alternative as a single camera can observe a large area in great detail. However, low image resolution, poor image quality, and low frame rates as well as varying lighting conditions in outdoor scenarios make the detection of real-world states using these lousy cameras a challenging problem. In this paper we introduce a framework that addresses this problem by providing an end-to-end solution that includes energy-efficient image capture, image enhancement to mitigate low picture quality, object detection with low frame rates, inference of high-level states, and publishing of these states on the IoT. the framework can be flexibly configured by end-users without programming skills and supports a variety of different applications.

关键词： Cameras Wireless communication Lighting Object detection Wireless sensor networks Image resolution

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