Accession Number : AD0776308

Title :   A Diver Monitor System.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s) : Hamilton,John D. M.

Report Date : DEC 1973

Pagination or Media Count : 46

Abstract : A system is presented which allows continuous monitoring of a free-swimming diver. The Diver Monitor System (DMS) employs a diver-carried acoustic transmitter which transmits pulses synchronized with the diver's heartbeat. Surface personnel are able to minotor the diver's general physical state as indicated by his heart rate and, by directional homing with Navy hand-held sonar, can locate and recover divers in zero visibility conditions. A continuous signal may be transmitted automatically in the diver's heart stops or exceeds preset limits. The diver's electrocardiogram signal is picked up by chest electrodes, amplified, filtered, and waveshaped into a trigger pulse which activates a one watt 40 kHz. sonar transmitter. (Modified author abstract)

Descriptors :   *Divers, *Acoustic tracking, Monitoring, Physiology, Heart, Transmitters, Acoustic tracking, Theses, Sonar, Electrocardiography, Diving, Telemeter systems

Subject Categories : Biomedical Instrumentation and Bioengineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE