DocumentCode :
590430
Title :
Smart optical wireless sensor for real time swimmers feedback
Author :
Hagem, R.M. ; Thiel, David Victor ; O´Keefe, S.G. ; Dahm, N. ; Stamm, A. ; Fickenscher, T.
Author_Institution :
Centre for Wireless Monitoring & Applic., Griffith Univ., Brisbane, QLD, Australia
fYear :
2012
fDate :
28-31 Oct. 2012
Firstpage :
1
Lastpage :
4
Abstract :
Water is difficult environment for a wireless communications during swimming. A novel swimmer feedback system to enable consistent swimming pace consists of a ring of eight green LEDs which transmits information from a wrist mounted accelerometer using frequency shift keying (FSK) and on-off keying (OOK). The receiver on the goggles used an integrated detector preamplifier (IDP). The percentage of received optical data was determined for different positions for the swimmer´s hand in different swimming styles (Freestyle, breaststroke, backstroke and butterfly). The system was evaluated in air and water to evaluate the preferred arm position and LED for communications. The stroke rate was determined using a 3-axis accelerometer and the interpretative firmware is different for each swimming style. One or more LEDs will be switched on during the cycle to achieve a maximum link performance. This system can be employed in pacing swimmers in both pool and open water swimming.
Keywords :
accelerometers; amplitude shift keying; frequency shift keying; optical links; sport; arm position evaluation; frequency shift keying; green LED; integrated detector preamplifier; on-off keying; optical data; real time swimmers feedback; smart optical wireless sensor; swimmer feedback system; swimmer hand position; swimming styles; wireless communications; wrist mounted accelerometer; Light emitting diodes; Optical feedback; Optical fiber communication; Optical receivers; Optical sensors; Optical transmitters; Wireless communication;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Sensors, 2012 IEEE
Conference_Location :
Taipei
ISSN :
1930-0395
Print_ISBN :
978-1-4577-1766-6
Electronic_ISBN :
1930-0395
Type :
conf
DOI :
10.1109/ICSENS.2012.6411208
Filename :
6411208
Link To Document :
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