HTB data collection

Mesoscale Atmospheric Network Workshop

University of Helsinki, 12 February 2007

Heikki Turtiainen

©Vaisala | date | Ref. code | Page 2

Developments in observation network communications

sensor 1

data logger communications unit

sensor n

sensor 1

sensor n

TCP/IP communications unit (with data buffer)

sensor bus

conventional data collection system

data transmission to

database

two-way data connection to

database /

network management

system - always on

GPRS, ADSL, WLAN, WiMax...

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Helsinki Testbed data collection

CO2

GSM/GPRS IP (VPN)

Soundings Wind Profiler

Ceilometers

Surface observations

ADSL

LAN

ADSL

GPS

Mobile observation platforms

FMI APN

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Data collection + interface to CDW

CDW

SO

A in

terfac

e

IP

TestbedMetMan

IP

IP

FMML- XML schema

http

Existing FMI data streams

Surface obs, soundings, WP

CL31

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Testbed data collection: application platforms

Surface observation stations• Aplicom 12 GSM engine with Java (J2Me) environment• Network control interface adapter for various observation equipment• TCP/IP based communications middleware for transporting data over

GSM/GPRS network to / from MetMan and other network management systems

• Same software (with some platform dependent libraries) can be run for example in MetMan PC to provide similar interface for directly connected devices, ex. ceilometers with DXE 421 com server.

Soundings, Wind Profiler• Microsoft Windows based measurement and data processing applications

with native IP connectivity• Utilize the same communications middleware than J2Me application

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Data collection: application platforms contd.

Vaisala MetMan• Vaisala Solutions product for observation data management• Microsoft Windows operating environment• Collecting the data from observation stations• Data conversion to FMML and html posting to central data warehouse

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HTB data flow - original architecture

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HTB data flow - current architecture (temporary)