An IP Network-based Signal Control System
For Automatic Block Signal And Its
Functional Enhancement
Author(s)
K. Hayakawa, T. Miura, R. Ishima, H. Soutome, H. Tanuma
& Y. Yoshida
Abstract
Conventional signalling systems for automatic block signals have several
problems, such as the complicated wiring work for relays and unreliable simplex
devices. We developed an IP Network-based Signal Control System for
Automatic Block Signal. A Logic Controller (LC), placed in a signal house,
integrates several control logics of signalling field devices. A Field Controller
(FC), placed near each automatic block signal, electrically controls the signalling
field devices. The LC and FCs exchange the control data through an IP network,
the connection of which is simpler than conventional relay circuits. In order to
enhance maintainability and transport stability in introducing this system into
service, the following new functions have been developed. A diagnostic function
enables the FCs to recognize where a malfunction of field devices or cables has
happened, by means of current sensors added in the FCs. It is also possible to
maintain train operations, even in the case of a malfunction of track circuits, by
tracing train movements around the track circuits concerned. These new
functions are expected to contribute to quick restoration at the breakdown in the
signalling devices and the stable transport. We have carried out field tests to
confirm their functionalities and characteristics in the wayside environment. This
paper describes the above-mentioned functional enhancement and its field test
results as well as an outline of an IP Network-based Signal Control System for
Automatic Block Signal.
Keywords
IP-network, PON, automatic block signal, track circuit, current sensor, maintainability
Related Book
Other papers in this volume
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