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Proceedings Paper

Real-time synchronization of wireless sensor network by 1-PPS signal
Author(s): Marco Giammarini; Marco Pieralisi; Daniela Isidori; Enrico Concettoni; Cristina Cristalli; Matteo Fioravanti
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Paper Abstract

The use of wireless sensor networks with different nodes is desirable in a smart environment, because the network setting up and installation on preexisting structures can be done without a fixed cabled infrastructure. The flexibility of the monitoring system is fundamental where the use of a considerable quantity of cables could compromise the normal exercise, could affect the quality of acquired signal and finally increase the cost of the materials and installation. The network is composed of several intelligent "nodes", which acquires data from different kind of sensors, and then store or transmit them to a central elaboration unit. The synchronization of data acquisition is the core of the real-time wireless sensor network (WSN). In this paper, we present a comparison between different methods proposed by literature for the real-time acquisition in a WSN and finally we present our solution based on 1-Pulse-Per-Second (1-PPS) signal generated by GPS systems. The sensor node developed is a small-embedded system based on ARM microcontroller that manages the acquisition, the timing and the post-processing of the data. The communications between the sensors and the master based on IEEE 802.15.4 protocol and managed by dedicated software. Finally, we present the preliminary results obtained on a 3 floor building simulator with the wireless sensors system developed.

Paper Details

Date Published: 21 May 2015
PDF: 10 pages
Proc. SPIE 9517, Smart Sensors, Actuators, and MEMS VII; and Cyber Physical Systems, 951718 (21 May 2015); doi: 10.1117/12.2179479
Show Author Affiliations
Marco Giammarini, Loccioni Group (Italy)
Marco Pieralisi, Univ. Politecnica delle Marche (Italy)
Daniela Isidori, Loccioni Group (Italy)
Enrico Concettoni, Loccioni Group (Italy)
Cristina Cristalli, Loccioni Group (Italy)
Matteo Fioravanti, Loccioni Group (Italy)

Published in SPIE Proceedings Vol. 9517:
Smart Sensors, Actuators, and MEMS VII; and Cyber Physical Systems
José Luis Sánchez-Rojas; Riccardo Brama, Editor(s)

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