Ramakrishnan, K; Dr. Balakrishnan, K G(Cochin University of Science & Technology, 1991)
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Abstract:
Remote Data acquisition and analysing systems
developed for fisheries and related environmental studies
have been reported. It consists of three units. The first
one namely multichannel remote data acquisition system is
installed at the remote place powered by a rechargeable
battery. It acquires and stores the 16 channel environmental
data on a battery backed up RAM. The second unit
called the Field data analyser is used for insitue display
and analysis of the data stored in the backed up RAM. The
third unit namely Laboratory data analyser is an IBM
compatible PC based unit for detailed analysis and interpretation
of the data after bringing the RAM unit to the
laboratory. The data collected using the system has been
analysed and presented in the form of a graph. The system
timer operated at negligibly low current, switches on the
power to the entire remote operated system at prefixed time
interval of 2 hours.Data storage at remote site on low power battery
backedupRAM and retrieval and analysis of data using PC are
the special i ty of the system. The remote operated system takes about 7 seconds including the 5 second stabilization
time to acquire and store data and is very ideal for remote
operation on rechargeable bat tery. The system can store
16 channel data scanned at 2 hour interval for 10 days on
2K backed up RAM with memory expansion facility for 8K RAM.
Description:
Department of Electronics,
Cochin University of Science and Technology