sensor node

ZDNet Resources

• sort by:
• Relevance
• Date
• Popularity

Internet Metadata Framework for Plug and Play Wireless Sensor Networks

Metadata, self-describing data about sensor nodes and sensing data, is needed to understand different capabilities provided by heterogeneous sensor networks. However, storing metadata in resource constrained sensor nodes is infeasible in terms of increased memory costs and multi-hop communication overheads. More than this, sensor networks have difficulties with supporting XMLs...

Tags: Metadata, Network, Wireless Sensor Network, Wireless, Sensor Node, Internet, Servers, Networking, Hardware

White papers 2009-01-19

A Mobile-Agent Based Wireless Sensing Network for Structural Monitoring Applications

A new wireless sensing network paradigm is presented for structural monitoring applications. In this approach, both power and data interrogation commands are conveyed via a mobile-agent that is sent to sensor nodes to perform intended interrogations, which can alleviate several limitations of the traditional sensing networks. Furthermore, the mobile-agent provides...

Tags: Network, Monitoring, Wireless, Sensor Node, Wireless Sensor Node, Wi-Fi, Wireless And Mobility

White papers 2008-12-19

Optimizing Lifetime for Continuous Data Aggregation With Precision Guarantees in Wireless Sensor Networks

This paper exploits the tradeoff between data quality and energy consumption to extend the lifetime of wireless sensor networks. To obtain an aggregate form of sensor data with precision guarantees, the precision constraint is partitioned and allocated to individual sensor nodes in a coordinated fashion. The key idea is to...

Tags: Network, Wireless Sensor Network, Wireless, Sensor Node

White papers 2008-08-01

A Combined Routing Layer for Wireless Sensor Networks and Mobile Ad-Hoc Networks

In the near future, first responders such as firefighters might be supported by sensor nodes, both installed before the incident and placed by the responders themselves. To communicate with these sensor nodes, the first responders could be equipped with hand held devices, e.g. PDAs with wireless LAN, additionally equipped with...

Tags: Mobile, Network, Wireless Sensor Network, Wireless, Sensor Node, PDAs, Advertising & Promotion, Handhelds, Wireless And Mobility, Cellular Phones, Networking, Hardware, Marketing, Consumer Electronics, Personal Technology

White papers 2008-05-28

Model-Based Validation of QoS Properties of Biomedical Sensor Networks

A Biomedical Sensor Network BSN is a small-size sensor network for medical applications, that may contain tens of sensor nodes. This paper presents a formal model for BSNs using timed automata, where the sensor nodes communicate using the Chipcon CC2420 transceiver developed by Texas Instruments according to the IEEE 802.15.4...

Tags: QoS, Network, Sensor, Biomedical, Biomedical Sensor Network, Sensor Node, Healthcare

White papers 2008-04-18

Maximizing Lifetime of Wireless Sensor Networks With Mobile Sensor Nodes

This paper proposes a new method utilizing mobile sensor nodes to prolong WSN lifetime while maintaining a large sensing area. The paper formulates this problem as a problem in finding the best positions for mobile sensor nodes to maximize the integral of the sensing area for the remaining lifetime of...

Tags: Mobile, Network, Wireless Sensor Network, Wireless, Sensor Node, Engineering, Advertising & Promotion, Marketing

White papers 2008-04-11

Web Services for Sensor Node Access

Some research areas rely on simulation instead of experiments. And these simulation scenarios need a suitable data basis to operate on. Besides existing databases containing previously acquired or calculated data, sensor networks are a useful way to acquire necessary data. This paper introduces a software and hardware system that allows...

Tags: Web, Microsoft Access, Web Service, Hardware, University Of Kaiserslautern, Sensor Node, Middleware, Enterprise Software, Software

White papers 2008-01-01

Spinning Sensors: Middleware for Robotic Sensor Network

This paper proposes Spinning Sensors, a middleware system for creating robotic sensor network applications. This middleware enables application programmers to easily write application software which utilizes both sensors and actuators in their network. In the Spinning Sensors model, a sensor node is attached to a robotic actuator to change its...

Tags: Network, Sensor, Sensor Node, Middleware, Enterprise Software, Software

White papers 2007-09-04

Local Update-Based Routing Protocol in Wireless Sensor Networks With Mobile Sinks

Mobile sinks can be a viable solution to solve the problem that energy consumption is not balanced for all the sensor nodes in Wireless Sensor Networks WSNs. Frequent location updates from the sink a current possible solution can lead to both rapid energy consumption of the sensor nodes and increased...

Tags: Mobile, Network, Wireless Sensor Network, Routing Protocol, Sensor Node, Wi-Fi, Wireless

White papers 2006-09-28

Additional Resources

Data Management of Mobile Object Tracking Applications in Wireless Sensor Networks

This paper focuses on the data management problem of object tracking applications in wireless sensor networks. The paper proposes link-segment storage and query protocol to track mobile object in wireless sensor network dynamically. The main idea of the protocol is to combine advantages of local storage with data centric storage...

Tags: Mobile, Network, Wireless Sensor Network, Wireless, Academy Publisher, Data Management, Storage, Hardware

White papers 2009-09-01

Authenticated Data Compression in Delay Tolerant Wireless Sensor Networks

Delay Tolerant Wireless Sensor Networks DTWSNs are sensor networks where continuous connectivity between the sensor nodes and their final destinations (e.g., the base station) cannot be guaranteed. Storage constraints are particularly a concern in DTWSNs, since each node may have to store sensed data for a long period of time...

Tags: Network, Data Compression, Wireless Sensor Network, Node, North Carolina State University, Wireless, Storage Constraint, Productivity, Storage, Hardware

White papers 2009-06-22

Study on Energy Saving and Security of Bluetooth Sensor Network

The paper discusses an available method for design and analysis of information security and energy saving of wireless sensor network, which is based on Bluetooth technology. In this method, a low power SCM and a special mode are used to save the power of each sensor node as well as...

Tags: Security, Network, Sensor, Academy Publisher, Bluetooth, Wi-Fi, Wireless And Mobility

White papers 2009-05-24

Coupling Wireless Sensor Networks and the Sensor Observation Service - Bridging the Interoperability Gap

The application of Wireless Sensor Networks WSN provides an inexpensive and easy to implement monitoring system for landslide events. The system used in SLEWS for deploying sensor units is constructed by the project partner ScatterWeb. As a modern and autonomous ad hoc wireless sensor network it is characterised by self-organisation...

Tags: Network, Wireless Sensor Network, Node, Wireless, Leibniz Universitaet Hannover

White papers 2009-05-18

Sidewinder: A Predictive Data Forwarding Protocol for Mobile Wireless Sensor Networks

In-situ data collection for mobile wireless sensor network deployments has received little study, such as in the case of floating sensor networks for storm surge and innundation monitoring. The paper demonstrates through quantitative study that traditional approaches to routing in mobile environments do not work well due to volatile topology...

Tags: Mobile, Network, Wireless Sensor Network, Wireless, Advertising & Promotion, Wireless And Mobility, Marketing

White papers 2009-05-04

On Hierarchical Routing in Wireless Sensor Networks

Hierarchical routing is a promising approach for point-to-point routing with very small routing state. While there are many theoretical analyses and high-level simulations demonstrating its benefits, there has been little work to evaluate it in a realistic wireless sensor network setting. Based on numerous proposed hierarchical routing infrastructures, the paper...

Tags: Network, Wireless Sensor Network, Association For Computing Machinery, Infrastructure, Wireless, Networking

White papers 2009-04-16

Predictive QoS Routing to Mobile Sinks in Wireless Sensor Networks

The paper presents an algorithm for data delivery to mobile sinks in wireless sensor networks. The algorithm is based on information potentials, which one extends to account for mobility. The paper shows that for local movement along edges in the communication graph, the information potentials can be adapted using a...

Tags: QoS, Mobile, Network, Wireless Sensor Network, Mobility, Wireless, Wireless And Mobility

White papers 2009-04-16

An Adaptive Link Layer for Range Diversity in Multi-Radio Mobile Sensor Networks

An important challenge in mobile sensor networks is to enable energy-efficient communication over a diversity of distances while being robust to wireless effects caused by node mobility. This paper argues that the pairing of two complementary radios with heterogeneous range characteristics enables greater range diversity at lower energy cost than...

Tags: Mobile, Network, University Of Massachusetts, Sensor, Diversity, Advertising & Promotion, Wireless And Mobility, Marketing

White papers 2009-03-05

High Information Assurance in Wireless Sensor Networks: A Multi-Layer Security Framework

Tremendous advancements in embedded systems, sensors and wireless communications technology have made it possible to build Wireless Sensor Networks WSNs consisting of a large number of sensor nodes capable of sensing, processing, and communicating wirelessly in a distributed manner. Indeed, WSNs are being deployed for real-time monitoring of various mission...

Tags: Security, Network, Wireless Sensor Network, Wireless, Wi-Fi, Wireless And Mobility

White papers 2009-02-18

Embedded Web Server for Wireless Sensor Networks

This paper presents an implementation of a platform-independent embedded web server and its integration into a network of wireless sensor nodes. The embedded web server is designed and built as an expansion module for one of the nodes in the Wireless Sensor Network WSN. It allows authorized Internet users to...

Tags: Web Server, Network, Wireless Sensor Network, Server, Wireless, University Of Alaska Fairbanks, Web Servers, Wi-Fi, Wireless And Mobility, Networking, Internet

White papers 2009-01-31

Implementation of an On-Demand Routing Protocol for Wireless Sensor Networks

This paper presents their experiences in implementing and validating the on-demand EYES Source Routing protocol ESR in a real Wireless Sensor Network WSN environment. ESR has a fast recovery mechanism relying on MAC layer feedback to overcome frequent network topology changes resulting from node mobility and unreliability. A geographically restricted...

Tags: Network, Environment, On-demand, Wireless Sensor Network, Wireless, University Of Twente, ESR, Managed Hosting, Cloud Computing, Wireless And Mobility

White papers 2009-01-01