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Study on Formal Specification of Automatic Train Protection and Block System for Local Line

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4 Author(s)
Guo Xie ; Dept. of Electron. & Comput. Sci., Nihon Univ., Funabashi, Japan ; Asano, A. ; Takahashi, S. ; Nakamura, H.

This paper presents a formal specification of an Automatic Train Protection and Block (ATPB) model for local line railway system in Japan proposed by the author, and validates the model by internal consistency proving and systematic testing. The system consists of two parts, the on-board subsystem and ground subsystem. The former is to detect the basic state of train, such as position, speed and integrity, monitor the speed, communicate with ground equipment and record the relative events. And the latter is responsible for communicating with train, controlling the route and interlocking, and decision-making for train operation adjustment. The main purpose of this project is to improve the efficiency and guarantee that there is no collision, no derailment and no over speeding at the same. The formal language used in this project is VDM++. And the state and specification of operation are all checked and validated using VDMTools. The results confirm the correctness of this system and the model throws new light on practical system design.

Published in:

Secure Software Integration & Reliability Improvement Companion (SSIRI-C), 2011 5th International Conference on

Date of Conference:

27-29 June 2011