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In-Depth Information
Reliability of the IP Network-based Signal
Control System and the Integrated Logical
Controller
Takashi Kunifuji
1
, Yoshinori Saiki
1
, Satoru Masutani
2
, and Masayuki
Matsumoto
2
1
Research Development Center of JR East Group, East Japan Railway Company,
2-479 Nissin-cho, Kita-ku, Saitama, 331-8513 Japan
{y-saiki, kunifuji}@jreast.co.jp
2
Electrical & Signal Network Department, East Japan Railway Company,
2-2-2, Yoyogi, Shibuya-ku, Tokyo, Japan
{s-masutani, m-matsumoto}@jreast.co.jp
Abstract. EastJapanRailwayCompanydevelopedtheIPNetwork-
based Signal Control System, which was introduced into service in
February 2007, with an innovative change of the control techniques
forwaysidesignalingdevicesfrompowercontrolthroughconventional
metallic cables to digital information control through an optical net-
work. This system is intended to improve the quality of construction
of signaling devices by reducing the wiring work that is required for
a large number of metallic cables and simplifying the operation tests.
In this system, reliability is improved by using the duplex transmis-
sion lines, including the optical network. In this paper, we describe
reliability of the IP Network-based Signal Control System and dis-
cuss application to the Integrated Logical Controller that is currently
under development.
Keywords: PON, Internet Protocol, Railway Signal, Equipment Integra-
tion
1
Introduction
In a conventional railway signaling system, railway signals and motors are
controlled by interlockings through metallic cables. Because there are many
metallic cables, the wiring work and the operation test become problems.
Therefore, East Japan Railway Company has developed the IP Network-
based Signal Control System to innovate a change in the control techniques
for wayside signaling devices from power control through conventional metal-
lic cables to digital information control through an optical network, and intro-
duced it into service in February 2007. The goal of this system is to improve
the quality of construction of signaling devices by reducing the wiring work
that is required for a large number of metallic cables, and by simplifying the
