Error control systems for digital communication and storage
Error control systems for digital communication and storage
PSFQ: a reliable transport protocol for wireless sensor networks
WSNA '02 Proceedings of the 1st ACM international workshop on Wireless sensor networks and applications
Dynamic Power Management in Wireless Sensor Networks
IEEE Design & Test
CODA: congestion detection and avoidance in sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
A scalable approach for reliable downstream data delivery in wireless sensor networks
Proceedings of the 5th ACM international symposium on Mobile ad hoc networking and computing
ATP: A Reliable Transport Protocol for Ad Hoc Networks
IEEE Transactions on Mobile Computing
Event-to-sink reliable transport in wireless sensor networks
IEEE/ACM Transactions on Networking (TON)
Dynamic reconfiguration in sensor middleware
Proceedings of the international workshop on Middleware for sensor networks
Wireless Sensor Networks and Applications (Signals and Communication Technology)
Wireless Sensor Networks and Applications (Signals and Communication Technology)
Wireless Sensor Networks: Technology, Protocols, and Applications
Wireless Sensor Networks: Technology, Protocols, and Applications
Energy conservation in wireless sensor networks: A survey
Ad Hoc Networks
An indoor localization platform for ambient assisted living using UWB
Proceedings of the 6th International Conference on Advances in Mobile Computing and Multimedia
Ontology Based Approach to the Detection of Domestics Problems for Independent Senior People
IWINAC '09 Proceedings of the 3rd International Work-Conference on The Interplay Between Natural and Artificial Computation: Part II: Bioinspired Applications in Artificial and Natural Computation
A Wireless Sensor Network for Assisted Living at Home of Elderly People
IWINAC '09 Proceedings of the 3rd International Work-Conference on The Interplay Between Natural and Artificial Computation: Part II: Bioinspired Applications in Artificial and Natural Computation
SOPRANO --- An Ambient Assisted Living System for Supporting Older People at Home
ICOST '09 Proceedings of the 7th International Conference on Smart Homes and Health Telematics: Ambient Assistive Health and Wellness Management in the Heart of the City
Energy-efficient subthreshold processor design
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
Low power finite state machine synthesis using power-gating
Integration, the VLSI Journal
A system for ubiquitous fall monitoring at home via a wireless sensor network and a wearable mote
Expert Systems with Applications: An International Journal
Routing techniques in wireless sensor networks: a survey
IEEE Wireless Communications
The problem of medium access control in wireless sensor networks
IEEE Wireless Communications
Middleware to support sensor network applications
IEEE Network: The Magazine of Global Internetworking
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DIA (Dispositivo Inteligente de Alarma, in Spanish) is an AAL (Ambient Assisted Living) system that allows to infer a potential dangerous action of an elderly person living alone at home. This inference is obtained by a specific sensorisation with sensor nodes (portables and fixes) and a reasoning layer embedded in a PC that learns of the users behaviour patterns and advices when actual one differs significantly of the normal patterns. In AAL systems, energy is a limited resource therefore sensor devices need to be properly managed to conserve energy. In this paper, we introduce the design and implementation of innovative and specific mechanisms at the sensory layer middleware which is capable of, first to discriminate spurious motion detections assuming that these signals do not resemble the patterns of real motion detections and, second to reduce the dynamics of messages by a sensor signal processing in order to compress the whole information in one single event. The middleware achieves power saving by modifying the raw information from sensors and adapting it to the predefined semantic of the reasoning layer. It manages the important task of data processing from sensors (raw information), and transfers the pre-processed information into the top layer of reasoning in a more energy efficient way. We also address the trade-off between reducing power consumption and reducing delay for incoming data. We present results from experiments using our implementation of these mechanisms at the middleware that comprises from node firmware to the PC driver. The number of messages of the proposed method with respect to the raw data is reduced by approximately 98.5%. The resources used in the PIR signal processing is reduced by approximately 85%. The resulting delay introduced is small (10-19s) but system dynamics is slow enough to avoid contextualisation errors or reduction of system performance. We consider these results as very satisfactory.