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Abstract:
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This thesis reports on the details of the works done
to develop a complete system for acquisition of the important
marine environmental parameters namely, current, current
direction, salinity, temperature and depth. It encompaéps
transducers,signalconditioners display arrangements and remote
controlled multiplexer which constitue the system. The various
associate instruentation and environmental requisites
and problems have been discussed and solved to considerable
extend. The design and development features of this composite
system includes an integrated approach in order to make
the final equipment to be simple, inexpensive and easy for
operation from small and large boats. This could be achieved
with the successful development of all required components
with features matching between them, such as sensors,
signals conditioners remote operated multiplexers, comon
display methods, quick performance check and calibration
methods. The major success rests on the development of
sensors with excellent performance characteristics suitable
for marine environment. out of the 5 sensors. that of current
salinity and depth are quite noval types with specific advantages.
The environmental effects have been eliminated to the
required extend. The common signal conditioner for salinity,
temperature and depth has noval design features for achieving
simplicity, reliability and accomodating the three sensors of
different functional requirements. |