National Institute of Oceanography, Goa has developed state of art weather station for meteorological measurements on land and at sea. Our systems have been successfully used for environmental impact assessment along the Indian coast and on board scientific research vessels operating at sea.
Land based systems are designed to work in remote and hostile environment for extended period of time. We have options to support communication links such as ARGOS PTT, UHF/VHF and dial up access through phone and cellular network etc.
Ship based systems have integrated compass and GPS receiver and supports interfaces to various ship board equipment such as Log/Gyro, echosounders etc. Shipboard system uses personal computer for data acquisition and display. The system is implemented to work in Microsoft Windows environment with a user friendly menu driven graphical front end interface and provides networking support for multiple displays.
NIO AWS is designed with high quality imported sensors with proven performances in field. These sensors have been widely accepted for oceanographic and climatic studies in international programs. The data acquisition unit is designed using a low power, 32 bit embedded microcontroller and is programmed in 'C'. The system uses field programmable FLASH memories, so that software updates, modifications and enhancements etc. can be downloaded easily through serial port.
Specifications of metorological sensors used with NIO AWS
sensor specifications
wind speed range 0-60 m/s
gust survival 100 m/sec
pitch 30 cm air passage per revolution
distance constant 2.7 metre for 63% recovery
output frequency 3 cycles/rotation, 0.098 m/s per Hz
sensor type propeller from RM YOUNG USA
wind direction range 360 degrees mechanical, 355 degrees electrical (5 degrees open)
delay distance 1.3m for 50% recovery
Threshold sensitivity 1.0 m/sec
Damping ratio 0.25
type precession conductive plastic potentiometer from RM YOUNG USA
air temperature range 0-50 degrees C
accuracy +- 0.15 degrees C
type thermistor, YSI 44202
barometric pressure range 1300 mbar
resolution 0.01 mbar
sampling rate 10 Hz
output RS232, TTL serial, parallel
power 8-16 volt dc, 6ma(oper), 10 microamp(stdby)
type Intellisensor AIR DB from A.I.R. USA
solar radiation range 0-200mw/m sq.
accuracy 5%
type silicon pohotodide, LI-200 SA from Lycor Inc. USA
humidity range 0-100 % RH
accuracy 1%
type capacitive polymer, from Rotronic USA
Specifications of AWS Data logger
Communication Links
Ship Based AWS