A signal control system by optical LAN and design simplification

Nishiyama, Jun; Sugahara, Hiroyuki; Okada, T.; Kunifuji, Takashi; Fukuta, Y.; Matsumoto, Masayuki

doi:10.1109/icsmc.2007.4413872

Cited by 8 publications

(1 citation statement)

References 3 publications

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“…We introduced an optical LAN and the Internet technologies to the transmission between the central control unit and the field devices [7][8] [9][10] [11]. The optical LAN drastically changes the control method of the field devices.…”

Section: B Signalcontrol System Based On Ip-networkmentioning

confidence: 99%

Safety Technologies in Autonomous Decentralized Railway Control System and its Future Studies

Ryoki

Kunifuji

Itoh

2018

IEICE Trans. Commun.

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Abstract-Along with the sophistication of society, the requirements for infrastructure systems are also becoming more sophisticated. Conventionally, infrastructure systems have been accepted if they were safe and stable, but nowadays they are required for serviceability as a matter of course. For this reason, not only the expansion of the scope of the control system but also the integration with the information service system has been frequently carried out. In this paper, we describe safety technology based on autonomous decentralized technology as one of the measures to secure safety in a control system integrating such information service functions. And we propose its future studies.

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Section: B Signalcontrol System Based On Ip-networkmentioning

confidence: 99%

Safety Technologies in Autonomous Decentralized Railway Control System and its Future Studies

Ryoki

Kunifuji

Itoh

2018

IEICE Trans. Commun.

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A Framework of the Wireless Sensor Based Railway Signal System

Kumar¹,

Chaudhary²,

Singh³

et al. 2012

IT Convergence and Security 2012

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A Novel Railway Signal Control System Based on the Internet and Assurance Technologies

Kunifuji

Kogure

Sugahara

et al. 2008

IEICE Transactions on Information and Systems

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Members SUMMARYWe have developed a novel railway signal control system that operates as a distributed system. It consists of a central control unit (called LC) and terminal devices (called FC) that are distributed at the railroad wayside and operate signal devices. The Internet technologies and optical LAN technologies have been used as communication methods between the LC and the FCs. While handling enormous amount of electric cables may cause human errors, the system is expected to reduce troubles of the current signal system at construction works thanks to the Internet technologies. The FC is a distributed terminal device that has its own processor and placed at the railroad wayside to control the field signal devices. The LC is a centralized computer device that has software arranged by the function of the field devices. An optical network system and multiple communication paths between the LC and the FCs realize durable transmissions. Moreover, the assure performance of controls and transmissions have been investigated, and the autonomous distributed signal control system is also discussed as the next steps of the system. key words: network technology train signal control, internet protocol, optical transmission, assurance technology Railway signal systems have significant roles in the safe and stable train operations.These systems are still developing to satisfy a lot of demands such as changes of transportation capacity or revisions of train schedules.Ordinary railway signal systems mainly consist of logics by relay circuits, which need specific electric wirings. Manual works of the wiring tasks built up the relay circuits that are individually designed, but the works may cause human errors which result in significant transportation disorders. Moreover, demands for high operating rate require a duplex structure of the systems, but it is difficult to complete the duplex system by the relay logics.Recently, computer technologies are much progressed.

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A signal control system by optical LAN and design simplification

Cited by 8 publications

References 3 publications

Safety Technologies in Autonomous Decentralized Railway Control System and its Future Studies

Safety Technologies in Autonomous Decentralized Railway Control System and its Future Studies

A Framework of the Wireless Sensor Based Railway Signal System

A Novel Railway Signal Control System Based on the Internet and Assurance Technologies

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