this poster presents an innovative dual-mode medium access control scheme that combines the ultra low power MAC protocol WiseMAC withthe wireless sensor networking standard IEEE 802.15.4. Each network device can inde...
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ISBN:
(纸本)9781450303446
this poster presents an innovative dual-mode medium access control scheme that combines the ultra low power MAC protocol WiseMAC withthe wireless sensor networking standard IEEE 802.15.4. Each network device can independently and autonomously switch between the two modes depending on its residual energy resources and the current application traffic. We observe that this approach can reduce the power consumption and the average latency by almost two orders of magnitude. Copyright 2010 acm.
In recent years, the research of sensor networks has advanced. they are anticipated for use in a wide variety of fields such as traceability systems of products, environmental morning, health care, etc. However, devel...
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ISBN:
(纸本)9781450303446
In recent years, the research of sensor networks has advanced. they are anticipated for use in a wide variety of fields such as traceability systems of products, environmental morning, health care, etc. However, developers must develop applications to work in a sensor node and applications to make the sensor data visible. therefore the knowledge that is necessary for development and the acquisition of the language will take time to develop. As described in this paper, we propose a development environment for sensor network application development. the environgment will be useful even by web programmers and a designers. Copyright 2010 acm.
the performance of sensor network protocols is greatly affected by the network topology: the network layout, the link dynamics, and the sink placement. We propose the Expected Network Delivery (END), a protocol-indepe...
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ISBN:
(纸本)9781450303446
the performance of sensor network protocols is greatly affected by the network topology: the network layout, the link dynamics, and the sink placement. We propose the Expected Network Delivery (END), a protocol-independent collection metric that captures the impact of the topology on protocol performance. Our preliminary results with two collection protocols on various topologies on the MoteLab testbed show that the END metric enables a more systematic and topology-aware evaluation of protocol performance. Copyright 2010 acm.
We demonstrate a synchronization-free localization system, called Whistle, for wireless sensor networks. the system is tested in several realistic environments on commercial off-the-shelf(COTS) devices and the mean er...
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ISBN:
(纸本)9781450303446
We demonstrate a synchronization-free localization system, called Whistle, for wireless sensor networks. the system is tested in several realistic environments on commercial off-the-shelf(COTS) devices and the mean error is 10∼20 centimeters in a 9 × 9 × 4m3 3D space. Copyright 2010 acm.
Power consumption is one of the most important factors in wireless sensor network research, but most simulators do not provide support for visualizing the power consumption of an entire sensor network. this makes it h...
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ISBN:
(纸本)9781450303446
Power consumption is one of the most important factors in wireless sensor network research, but most simulators do not provide support for visualizing the power consumption of an entire sensor network. this makes it hard to develop, debug, and understand mechanisms and protocols based on power-saving mechanisms. We present Cooja TimeLine, an extension to Contiki's Cooja network simulator, that visualizes radio traffic and radio usage of sensor networks. Cooja TimeLine makes is possible to visually see the behavior of low-power protocols and mechanisms thereby increasing the understanding of the behavior of sensor networks. We see this as an important tool for the field moving forward. Copyright 2010 acm.
this paper demonstrates the implementation of TinyTune, a collaborative musical instrument using sensor motes. the system implementation is distributed across multiple nodes and supports the basic elements of a musica...
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ISBN:
(纸本)9781450303446
this paper demonstrates the implementation of TinyTune, a collaborative musical instrument using sensor motes. the system implementation is distributed across multiple nodes and supports the basic elements of a musical instrument, such as pitch and octave selection. the communication design for realizing a collaborative musical instrument and the available user configuration options are then presented. Other topics of discussion include: the underlying system architecture, covering the advantages of our design choices;and the extensibility of the concept, which discusses how the nodes are configured in multi-instrument environments.
the use of Wireless Multimedia sensor Networks (WMSNs) in Intelligent Transportation systems (ITS) can offer cost effective solutions for gathering data on urban traffic, vehicle velocity, parking, etc. these applicat...
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ISBN:
(纸本)9781450303446
the use of Wireless Multimedia sensor Networks (WMSNs) in Intelligent Transportation systems (ITS) can offer cost effective solutions for gathering data on urban traffic, vehicle velocity, parking, etc. these applications demand real-time image acquisition and computational intensive processing in order to collect relevant information. We present our hardware and software solution for detecting moving objects and evaluating their velocity 1 based on line sensor technology which guarantees fast processing, low storage and bandwidth requirements. Copyright 2010 acm.
Simulation is an essential means for evaluating WSN applications. As many WSN applications embrace in-network data processing functionalities, more sophisticated simulation tools with data-enriched test case scenarios...
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ISBN:
(纸本)9781450303446
Simulation is an essential means for evaluating WSN applications. As many WSN applications embrace in-network data processing functionalities, more sophisticated simulation tools with data-enriched test case scenarios, such as extensive environment input and accurate hardware models, are necessary. this work devises TOSSIM DB, a data-enriched WSN simulation framework, allowing unmodified applications to be evaluated as if virtually deployed in a third-party environment. Notable features of TOSSIM DB include i) integrating third-party sensor datasets as virtual test scenarios, ii) emulating the statistical properties of sensor devices, and iii) seamless integration withthe TinyOS tool-chain. Copyright 2010 acm.
Understanding the dynamics of bodies of water and their impact on the global environment requires sensing information over the full volume of water. We develop a gradientbased decentralized controller that dynamically...
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ISBN:
(纸本)9781450303446
Understanding the dynamics of bodies of water and their impact on the global environment requires sensing information over the full volume of water. We develop a gradientbased decentralized controller that dynamically adjusts the depth of a network of underwater sensors to optimize sensing for computing maximally detailed volumetric models. We prove that the controller converges to a local minimum. We implement the controller on an underwater sensor network capable of adjusting their depths. through simulations and experiments, we verify the functionality and performance of the system and algorithm. Copyright 2010 acm.
Often software for wireless sensor networks (WSNs) is developed using a specific event based operating system (OS) such as TinyOS. However, this requires steep learning curve for the new developers. Other operating sy...
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ISBN:
(纸本)9781450303446
Often software for wireless sensor networks (WSNs) is developed using a specific event based operating system (OS) such as TinyOS. However, this requires steep learning curve for the new developers. Other operating systems for embedded devices have limited support for new hardware platforms. Our goal is to provide an operating system for resource constrained devices that is easy to use for the wide range of researchers and developers familiar with C programming language and Unix operating system concepts. In addition, we provide a framework for agile portability to new hardware platforms, due to the nature of WSN systemsthat require specific hardware or features for the sensing tasks at hand. We propose Multiple agent netted sensor Operating System (MansOS), that demonstrates ability to execute the same application on different platforms including x86 CPU based computers for easy simulation and debugging of a single node or a whole network. the new platforms are easily added to MansOS thanks to the well defined abstraction layers. MansOS is being successfully used in real world applications, such as wild animal tracking and environmental monitoring in a fruit care research garden. It has also been used in academic environment for teaching wireless sensor networks. Copyright 2010 acm.
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