Naslov
Design, Characterization and Management of a Wireless Sensor Network for Smart Gas Detection

Autori
Jeličić, Vana ; Magno, Michele ; Paci, Giacomo ; Brunelli, Davide ; Benini, Luca

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings 4th IEEE International Workshop on Advances in Sensors and Interfaces (IWASI) 2011 / - Savelletri : Institute of Electrical and Electronics Engineers (IEEE), 2011, 115-120

ISBN
978-1-4577-0622-6

Skup
4th IEEE International Workshop on Advances in Sensors and Interfaces (IWASI) 2011

Mjesto i datum
Selva di Fasano, Italija, 28.06.2011. - 29.06.2011

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Wireless sensor network; energy management; gas sensor; metal oxide semiconductor technology; people detection

Sažetak
Air quality monitoring in indoor environments is of great significance for comfort and health, especially nowadays that people spend more than 80% of the day indoor. We propose a flexible wireless system able to detect polluted air and dangerous situations in a complex and large environment. It is important for ambient intelligent systems to be unobtrusive and to optimize the power consumption of the platforms in order to be able to live on batteries for several years. We present a system with aggressive energy management that involves three levels: sensor level, node level and network level. The sensor board we designed is a wireless sensor network (WSN) node, with very low sleep current consumption (only 8 A). It contains two modalities — a gas sensor and a Pyroelectric InfraRed (PIR) sensor. The network is multimodal: it uses information from the PIR sensor and neighbor nodes to detect the presence of people and to modulate the duty cycle of the node and the Metal Oxide Semiconductor (MOX) gas sensor. In this way we reduce the nodes’ activity and energy requirements, providing a reliable service at the same time. We simulate the benefits of the context-aware adaptive duty-cycling of the gas sensor activity and we demonstrate a significant lifetime extension compared to the continuously driven gas sensor (several years vs. several days).

Izvorni jezik
Engleski

Znanstvena područja
Informacijske i komunikacijske znanosti

POVEZANOST RADA