Справочник Пользователя для Bombardier Transportation JGA29001-6
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Filename: JGA29001-6UserMan.docx
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1DOC-1001388
1.3 Definition of terms
Abbreviation
Description
ATP
ATP is the abbreviation for Automatic Train Protection system, which
is a speed supervision system.
is a speed supervision system.
Transponder
Device that transmits information to a passing ATP-equipped vehicle.
FCC
Federal Communications Commission
PCB
Printed Circuit Board
Crosstie
Sleeper
2 Transponder
2.1 General
The transponder is the device acting as a transponder, which transfer the wayside
data up to a passing vehicle via a high frequency radiation signal.
data up to a passing vehicle via a high frequency radiation signal.
The transponder is placed in the track, between the two rails.
The default telegram will be individually programmed for each transponder.
The transponder is passive, and powers up via a 27 MHz signal from the vehicle
antenna. Then the default telegram of the transponder is transmitted to the
vehicle antenna.
antenna. Then the default telegram of the transponder is transmitted to the
vehicle antenna.
The transponder-to-vehicle carrier frequency is 4.5 MHz.
2.2 Mechanical design
The transponder mainly consists of:
•
A plate containing antenna loops
•
A receive and transmit PCB
•
A PCB protection hood, including a wall mounted mail connector
•
An input plug connector protection hood.
The weight of the transponder is 6 kg.
Operating temperature range is between –40° and +70° C.
The figure below gives the main dimensions of the transponder.
The 536 × 400 mm plate is made of glass fibre reinforced polyester, with the
antenna loops cast inside. It has 8 holes for different mounting situations:
antenna loops cast inside. It has 8 holes for different mounting situations:
•
Directly on top of a wooden or concrete crosstie
•
On to a specific mounting bracket mounted on the crosstie.