turkey awos training 1.0 / alanya 2005 - baixardoc

TURKEY AWOS TRAINING 1.0 / ALANYA 2005


TRAINING COURSE ON

AUTOMATED WEATHER OBSERVING SYSTEMS

( AWOS )

MODULE C.2: COMMUNICATION

SONER KARATAŞELECTRONIC OBSERVING SYTEMS DIVISIONTURKISH STATE METEOROLOGICAL SERVICE


INTRODUCTION

Communication between DCU and local station

Communication between local station and remote centre

Communication between DCU and remote centre

Real Time

Cabled Communication

Wireless Communication

Off-Line

Memory Card






Communication between DCU and

local station

Communication between DCU and local

station can be separeted as

• Real Time Communication

• Off-line communication.


Real Time Communication

• A station providing data to users ofmeteorological observations in real time,typically at programmed times, but also inemergency conditions or upon externalrequest.

• Typical real-time uses would be theprovision of data for synoptic use and themonitoring of critical warning states suchas storms, river, or tide levels.



• RS232

• RS485

• Short Haul Modem


RS232

• The RS-232C standard is an

asynchronous serial communication method for distances up to 15ft.

• Serial means that the information is sent

1-bit at a time.

• Asynchronous means that the information isn't sent at predefined time slots (like with

a fixed clock, for instance).


RS232


RS485

• RS485 standard is an asynchronous serial communication method for distances up to 4000ft.

• An RS-485 network can be connected in a 2 or 4 wire mode.

• Maximum cable length can be as much as 4000 feet because of the differential voltage transmission system used.

• The RS232 may be converted to RS485 with a simple interface converter.


RS485 CONNECTION


Short Haul Modem

• Short haul modems are cheap solutions to systems of short ranges (up to 15 km), which use private lines and are not part of a public system.

turkey awos training 1.0 / alanya 2005 - baixardoc

Documents

Transcript of turkey awos training 1.0 / alanya 2005 - baixardoc