Implementation of a Low-Cost, Distributed, Absolute Time Reference in an application dedicated to damage detection
Résumé
Typical structural health monitoring configuration implies sensors and
supervisor installations connected by electric cable for communication. As done in
other wireless projects, this one aim at reducing installation and maintenance costs
by designing a wireless sensor network. One of the problem when designing
wireless sensors, is data tagging: an event has to be correctly dated by many
sensors. This problem increases when a precise time stamping is required.
What distinguishes this project is the implementation of algorithms that allows
precise time stamping by the use of a standard protocol and the separation between
measurements operations and communication task in order to make modular
sensors.
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