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MIDAS |
| Is a PC based Multiple
Instrument Data Acquisition System (MIDAS) controlled by a rack
mounted dual processor Digital Server 3000R with 21" monitor,
and 10 gigabyte hard drive. A National Instruments 16 port seraial
expansion board allows modular integration of instrumentation,
rapid sampling rates, and the maintenance of a real-time data
display. Analog sensor signals are converted to a serial format
for output to the host PC using using R.M. Young A/D devices.
The controlling software was developed using National Instruments
LabVIEW, to allow accessibility and ease of modification. |
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(click image to view full
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| A real time graphical
display provides charting and data display to the ships two
labs as well as anywhere else on the ships network. Navigational
data is acquired from a Starlink differential GPS or a Trimble
GPS with a Micronet Receiver Station. The Micronet Receiver
Station is a land based differential system privately maintained
(provided for LUMCON's use by Doug Chocrane Technologies, Laffeyette,
Louisiana), with sub 5 Meter accuracy and available out to 300
miles in the Gulf Of Mexico. A sea water flow-through system
provides sea surface temperature, conductivity, chlorophyll
fluorescence, and transmissometry data using: a Sea-bird Electronics
SBE 21 Thermosalinograph; a Sea-Bird Electronics SBE 38 Remote
Digital Immersion Thermometer; two Turner Designs Model 10 Series
Fluorometers; and a WETLabs 5.0-centimeter path length transmissometer.
MIDAS also integrates the data from the ships meteorological
suite into the data set and display. The meteorological suite
consists of a R.M. Young 05103 Wind Monitor, a R.M.Young model
61201Barometric Pressure sensor, a R.M.Young TS05327 Temperature
and Relative Humidity sensor and photosynthetically active radiation
(PAR) is measured with a LI-COR LI-190SZ Quantum Sensor. |
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