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Photos: Sensor telemetry
News Accenture is "working on how to embed intelligence in common objects" using "sensor telemetry" — a combination of sensor and RFID technologies that can be used to gather information. A light sensor can tell you if a door's been opened," which is...
[March 30, 2006, 14:45]
Sensor Relocation With Mobile Sensors: Design, Implementation, and Evaluation
White Papers This paper presents a mobile sensor prototype in which the Mica2 sensor node is used to control the movement of the robot built with Commercial Off-The-Shelf (COTS) components. The authors use a sensor relocation application to demonstrate the...
[August 10, 2007, 10:59]
Sensor-on-a-chip scans prints in an instant
News The EntréPad sensor is low power and robust, and the company says it is suitable for cellphone and PDA use as well as fixed installations. The sensor works by detecting the pattern of living cells beneath the dead epidermis.
[November 6, 2001, 16:11]
MMSN: Multi-Frequency Media Access Control for Wireless Sensor Networks
White Papers Multi-frequency media access control has been well understood in general wireless ad hoc networks, while in wireless sensor networks, researchers still focus on single frequency solutions. In wireless sensor networks, each device is typically...
[August 25, 2007, 1:00]
Encrypted Persistent Data Storage for Asynchronous Wireless Sensor Networks
White Papers It is a distributed database for asynchronous wireless sensor networks that provides long term storage for measured data and ensures the confidentiality of the stored information. The paper presents the tiny persistent encrypted data storage...
[February 4, 2009, 23:00]
Arbutus: Network-Layer Load Balancing for Wireless Sensor Networks
White Papers The hot spot problem is a typical byproduct of the many-to-one traffic pattern that characterizes most wireless sensor networks: the nodes with the best channel to the sink are overloaded with traffic from the rest of the network and experience a...
[July 10, 2008, 1:01]
Report: "A Distributed TDMA Slot Assignment Algorithm for Wireless Sensor Networks"
White Papers The paper provides a solution for the problem of creating a TDMA schedule in a wireless sensor network. The proposed algorithm is tailored to networks with sensor nodes and computes a TDMA schedule in a distributed manner.
[January 5, 2006, 0:01]
Infrastructure-Establishment From Scratch in Wireless Sensor Networks
White Papers The paper presents a distributed, localized and integrated approach for establishing both low-level and high-level infrastructure in wireless sensor networks. More concretely, the proposed scheme constructs a subgraph of the unit-disk graph which...
[February 5, 2009, 0:00]
Wireless Sensor Based on Bluetooth Technology
White Papers This paper discusses a project which aimed of building a wireless sensor device. The objective of the project is to master a new sensor approach. Target applications are robotic systems including medical robots.
[November 11, 2005, 0:00]
KDDCS: A Load-Balanced In-Network Data-Centric Storage Scheme for Sensor Networks
White Papers This paper proposes an In-Network Data-Centric Storage (INDCS) scheme for answering ad-hoc queries in sensor networks. Previously proposed In-Network Storage (INS) schemes suffered from Storage Hot-Spots that are formed if either the sensors...
[February 6, 2009, 0:00]
Performance Study of Organization and Data Aggregation in Wireless Sensor Networks
White Papers It can also enhance the energy efficiency and a lifetime of large sensor networks typically deployed in sensitive environments, such as seismic zones, or in smart environments. Energy efficiency is crucial due to the limited power of sensor nodes...
[August 10, 2007, 11:30]
Balancing Sensing and Coverage in Mobile Sensor Networks: Aggregation Based Approach
White Papers The paper studies how to assign mobile robots in a mobile wireless sensor network to different tasks that the network must perform so that each task receives its fair share of the resources in the network.
[August 10, 2007, 11:18]
Rethinking Data Management for Storage-Centric Sensor Networks
White Papers Data management in wireless sensor networks has been an area of significant research in recent years. Many existing sensor data management systems view sensor data as a continuous stream that is sensed, filtered, processed, and aggregated as it...
[November 2, 2008, 23:00]
ViaLogy SPM Sensor Policy Manager
White Papers Now organizations are beginning to upgrade their ad hoc collections of sensors into sensor networks that provide higher performance, actionable information, and global reach. ViaLogy is a world leader in solutions for rapidly creating policy-driven...
[August 30, 2009, 1:22]
Decomposing Data-Centric Storage Query Hot-Spots in Sensor Networks
White Papers Arising when a large percentage of queries are accessing data stored in few sensor nodes, query hot-spots reduce the Quality of Data (QoD) and the lifetime of the sensor network. All current In-Network Data-Centric Storage (INDCS) schemes fail to...
[February 6, 2009, 0:00]
A Taxonomy for Denial-of-Service Attacks in Wireless Sensor Networks
White Papers Wireless Sensor Networks (WSNs) are transitioning to real-world applications, where they face attacks already experienced by the Internet and wireless ad hoc networks. One such attack is that of Denial-Of-Service (DOS), which is believed will only...
[August 25, 2007, 1:00]
Design and Optimization of Distributed Sensing Coverage in Wireless Sensor Networks
White Papers For many sensor network applications such as military surveillance, it is necessary to provide full sensing coverage to a security-sensitive area while at the same time minimizing energy consumption and extending system lifetime by leveraging the...
[August 25, 2007, 1:00]
Placement, Coordination and Tasking of Static and Mobile Sensor Networks
White Papers Sensor networks consist of nodes that can measure characteristics of their local environment, perform computations, and communicate with each other over a wireless network. In recent years, advancements in hardware and low-level software have led...
[August 13, 2007, 15:14]
StarDust: A Flexible Architecture for Passive Localization in Wireless Sensor Networks
White Papers The problem of localization in wireless sensor networks where nodes do not use ranging hardware remains a challenging problem, when considering the required location accuracy, energy expenditure and the duration of the localization phase.
[August 25, 2007, 1:00]
Designing Energy-Efficient Wireless Sensor Networks With Mobile Sinks
White Papers Mobile enable Wireless Sensor Network (mWSN) has been proposed to realize large-scale information gathering via networking wireless sensors and mobile sinks. Sink velocity should be carefully chosen, in order to make a compromise between sink...
[April 23, 2009, 1:24]
