Abstract
Time synchronization is required in many data acquisition applications for sensor networks. A large variety of time synchronization protocols for wireless sensor networks has been suggested. Yet, setting up a sensor network for synchronized data acquisition based on those algorithms is not a trivial task. This paper outlines different approaches to time synchronous sampling in wireless sensor networks. The approaches are implemented on a wireless sensor network. Experiments are done to compare the signal quality of the signals acquired with the different approaches in terms of frequency error, signal-to-noise ratio (SNR) and total-harmonic-distortion (THD). Furthermore, the approaches are compared in terms of the effort required for communication and implementation.
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