Diver monitoring by ultrasonic digital data telemetry.
A through-water ultrasonic data telemetry system using burst-mode frequency shift keying (FSK) is described. The system can be adapted for the transmission of data from various sensors, but it has been designed principally for monitoring the respiratory rate, heart rate, temperature and depth of a free-swimming diver over a range of up to 300 metres. This application requires the transmission of low rate digital signals through water from a moving source to a receiver that is either stationary or moving.
Woodward
B
B
Department of Electronic and Electrical Engineering, Loughborough University of Technology, Leicestershire, UK.
Bateman
S C
SC
D000669:Amplifiers, Electronic; D001831:Body Temperature / Q000502:physiology; D004242:Diving / Q000502:physiology*; D004867:Equipment Design; D006339:Heart Rate; D006801:Humans; D012119:Respiration / Q000502:physiology; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013686:Telemetry / Q000295:instrumentation*; D014159:Transducers; D014463:Ultrasonography / Q000295:instrumentation*