Sensors 2012, 12(1), 632-649; doi:10.3390/s120100632
Article

Toward Sensor-Based Context Aware Systems

1 School of Information Environment, Tokyo Denki University, 2-1200 Muzai Gakuendai Inzai, Chiba, 270-1382, Japan 2 Dipartimento di Tecnologie dell’Informazione, Universitàdegli Studi di Milano, Via Bramante 65, 26013 Crema (CR), Italy
* Author to whom correspondence should be addressed.
Received: 12 December 2011; in revised form: 31 December 2011 / Accepted: 3 January 2012 / Published: 9 January 2012
(This article belongs to the Special Issue Selected Papers from FGIT 2010)
PDF Full-text Download PDF Full-Text [363 KB, uploaded 10 January 2012 12:04 CET]
Abstract: This paper proposes a methodology for sensor data interpretation that can combine sensor outputs with contexts represented as sets of annotated business rules. Sensor readings are interpreted to generate events labeled with the appropriate type and level of uncertainty. Then, the appropriate context is selected. Reconciliation of different uncertainty types is achieved by a simple technique that moves uncertainty from events to business rules by generating combs of standard Boolean predicates. Finally, context rules are evaluated together with the events to take a decision. The feasibility of our idea is demonstrated via a case study where a context-reasoning engine has been connected to simulated heartbeat sensors using prerecorded experimental data. We use sensor outputs to identify the proper context of operation of a system and trigger decision-making based on context information.
Keywords: context-based systems; sensor data interpretation; interpretation uncertainty

Article Statistics

Load and display the download statistics.

Citations to this Article

Cite This Article

MDPI and ACS Style

Sakurai, Y.; Takada, K.; Anisetti, M.; Bellandi, V.; Ceravolo, P.; Damiani, E.; Tsuruta, S. Toward Sensor-Based Context Aware Systems. Sensors 2012, 12, 632-649.

AMA Style

Sakurai Y, Takada K, Anisetti M, Bellandi V, Ceravolo P, Damiani E, Tsuruta S. Toward Sensor-Based Context Aware Systems. Sensors. 2012; 12(1):632-649.

Chicago/Turabian Style

Sakurai, Yoshitaka; Takada, Kouhei; Anisetti, Marco; Bellandi, Valerio; Ceravolo, Paolo; Damiani, Ernesto; Tsuruta, Setsuo. 2012. "Toward Sensor-Based Context Aware Systems." Sensors 12, no. 1: 632-649.

Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert