Time synchronization problem in a multiple wireless ECG sensor measurement
| Autor: | Andrej Vilhar, Matjaz Depolli |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
020205 medical informatics
Computer science business.industry Real-time computing Clock drift Sample (statistics) 02 engineering and technology Signal Synchronization Limit (music) 0202 electrical engineering electronic engineering information engineering Wireless 020201 artificial intelligence & image processing business Wireless sensor network Time synchronization |
| Zdroj: | WONS |
| DOI: | 10.23919/wons.2018.8311666 |
| Popis: | The paper addresses the time synchronization of multiple wireless ECG sensors. The approach to the problem is practical, by conducting laboratory experiments on an artificially generated signal. The performed analyses show that the sampling frequency should be followed continuously or the clock drifts will lead to clock offsets in the order of several samples per day. A method has been developed for continuous sampling frequency monitoring. It has been demonstrated to limit the clock drift to about 4 ms (0.5 sample at sampling frequency 125 Hz) over the period of 80 hours. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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