Performance of clock sources and their influence on time synchronization in wireless sensor networks

Wireless sensor networks require time synchronization, which is the coordination of events or actions to make a system operate in unison. In this work, real experiments and a theoretical analysis of the behavior of the clock sources, most used in wireless sensor networks, have been carried out. The...

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Main Authors: Francisco Tirado-Andrés, Alvaro Araujo
Format: Article
Language:English
Published: Wiley 2019-09-01
Series:International Journal of Distributed Sensor Networks
Online Access:https://doi.org/10.1177/1550147719879372
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author Francisco Tirado-Andrés
Alvaro Araujo
author_facet Francisco Tirado-Andrés
Alvaro Araujo
author_sort Francisco Tirado-Andrés
collection DOAJ
description Wireless sensor networks require time synchronization, which is the coordination of events or actions to make a system operate in unison. In this work, real experiments and a theoretical analysis of the behavior of the clock sources, most used in wireless sensor networks, have been carried out. The experiments have been performed on two real platforms from two different manufacturers in real environments with sudden changes in temperature. Complementary metal-oxide-semiconductor oscillators have a low accuracy, bigger than 500 ppm, and a high dependency with temperature. External crystal oscillators have good accuracy, around 20 ppm, and are stable with temperature. Temperature-compensated crystal oscillators are very accurate, around 5 ppm, and the temperature has no influence in their drift. The use of phase-locked loop circuits minimizes the impact of temperature and stabilizes oscillators. We highlight and demonstrate the importance of the early stages of design, especially the selection of the clock source, because that decision has a great impact on the performance of the time synchronization in wireless sensor networks.
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institution Kabale University
issn 1550-1477
language English
publishDate 2019-09-01
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record_format Article
series International Journal of Distributed Sensor Networks
spelling doaj-art-9b06d934c86c45d299377adfd12704462025-02-03T06:45:23ZengWileyInternational Journal of Distributed Sensor Networks1550-14772019-09-011510.1177/1550147719879372Performance of clock sources and their influence on time synchronization in wireless sensor networksFrancisco Tirado-AndrésAlvaro AraujoWireless sensor networks require time synchronization, which is the coordination of events or actions to make a system operate in unison. In this work, real experiments and a theoretical analysis of the behavior of the clock sources, most used in wireless sensor networks, have been carried out. The experiments have been performed on two real platforms from two different manufacturers in real environments with sudden changes in temperature. Complementary metal-oxide-semiconductor oscillators have a low accuracy, bigger than 500 ppm, and a high dependency with temperature. External crystal oscillators have good accuracy, around 20 ppm, and are stable with temperature. Temperature-compensated crystal oscillators are very accurate, around 5 ppm, and the temperature has no influence in their drift. The use of phase-locked loop circuits minimizes the impact of temperature and stabilizes oscillators. We highlight and demonstrate the importance of the early stages of design, especially the selection of the clock source, because that decision has a great impact on the performance of the time synchronization in wireless sensor networks.https://doi.org/10.1177/1550147719879372
spellingShingle Francisco Tirado-Andrés
Alvaro Araujo
Performance of clock sources and their influence on time synchronization in wireless sensor networks
International Journal of Distributed Sensor Networks
title Performance of clock sources and their influence on time synchronization in wireless sensor networks
title_full Performance of clock sources and their influence on time synchronization in wireless sensor networks
title_fullStr Performance of clock sources and their influence on time synchronization in wireless sensor networks
title_full_unstemmed Performance of clock sources and their influence on time synchronization in wireless sensor networks
title_short Performance of clock sources and their influence on time synchronization in wireless sensor networks
title_sort performance of clock sources and their influence on time synchronization in wireless sensor networks
url https://doi.org/10.1177/1550147719879372
work_keys_str_mv AT franciscotiradoandres performanceofclocksourcesandtheirinfluenceontimesynchronizationinwirelesssensornetworks
AT alvaroaraujo performanceofclocksourcesandtheirinfluenceontimesynchronizationinwirelesssensornetworks