por superlopez23 » 11 Mar 2007, 21:03
Los datos tecnicos que dispongo son los de abajo.
El tren tierra de RENFE se basa en ese standard pero lo amplia, hay mas tipos de mensajes por ejemplo, pero como comienzo nos puede servir.
He estado hablando con la gente de COAA (shipploter, etc) estan interesados, pero como al final seria un software de pago shareware , seria mejor si nosotros pudieramos por nuestra cuenta crear uno.
El compaÃ’ero que tiene el tren tierra nos seria muy util si puede hacerlo funcionar para asi capturar la equivalencia entre mensajes del tren-tierra y los paquetes de datos.
----------
UIC Radio Chapter 1- 4 + 6
Description:
This Ground-Train radio follows the technical regulations described in UIC code 751-3, 3rd edition, 01.07.84.
The UIC radio is an analogue radio, which consists of lineside and mobile (trainborne) equipment.
Radio systems following this basic subset allow for simplex and duplex voice communication and use of operating signals (tones), and for selective calls and for data transmission:
Main Characteristics:
Frequencies:
Train to ground:
457,450 MHz ..458,450 MHz.
Ground to train:
Band A: 467,400 MHz ..468,450 MHz.
Band B: 447,400 MHz ..448,450 MHz (only to be used when band A is not available).
Frequency spacing 25 kHz
Duplex frequency couples 10 MHz apart
Grouping of 4 channels, preferred 62 ... 65 for international traffic
Agreement on frequencies used bilateral or multilateral
Sensitivity
> 1 µV at > 20 dB signal to noise ratio (mobile)
> 2 µV (lineside)
Radiating power:
6 W mobile
6 W lineside
Antenna characteristics:
?/4 omnidirectional (mobile)
4 m above rail (mobile)
omnidirectional or directional (lineside)
In tunnels leaky cables or very directional aerials (lineside)
Terminating resistor 50 Ohms
Polarisation:
Vertical
In tunnels, any polarisation
Frequency deviation:
< 1,75 kHz for operating tone
< 2,25 kHz for voice
Modes of operation:
Mode 1, duplex mode
Mode 2, semiduplex mode
Switchover of channels on-board
manually by input of channel number
automatic, depending on receiver voltage
Operating tones:
Channel free: 2 280 Hz
Listening: 1 960 Hz
Pilot: 2 800 Hz
Warning: 1 520 Hz
Telegram structure:
Sync. header: 1111 1111 0010
6 decimal train number BCD coded
2 positions of information 4 bits each
7 bit redundancy code, polynomial: 1110 000 1 (H=4)
Telegram transmission:
600 bits/sec
FSK, ì0î = 1 700 Hz, ì1î = 1 300 Hz
Messages (coding given in hexadecimal representation)
Lineside to train:
Speech 08
Emergency stop 09
Test 00
Run faster 04
Run slower 02
Announcem. by loudspeaker 0C
Written order 06
Extension of telegram 03
Train to lineside:
Communic. desired 08
Acknowl. of order 0A
Advice 06
Test 00
Train staff wish to comm. 09
Telephone link desired 0C
Extension of telegram 03
Member States: Austria, Belgium, Denmark, Germany, Netherlands, Spain.