Xây dựng cây sự kiện phân tích an toàn hệ thống tín hiệu tự động đầu máy bằng phương pháp bảng quyết

Cong trinh Khoa hpc

XAY DIJlSG CAY SU KIEN PHAN TICH AN TOAN HE THONG

TiN HIEU TU DQNG DAU MAY

BANG PHUONG PHAP BANG QUYET DINH

TS. NGUYEN DUY V[$T

B() mdn Tin hi$u Giao thdng

Khoa Difn - Di^n tu

Trudng Dpi hpc Giao thdng V^n lai

Tdm tdt: Su dung phirang phdp bdng quyet dinh d4 xdy dung cay su ki^n phdn tich an

todn thay idu bdng cdch xdc Ipp mdi quan hi' qua Igi giira cdc trang thdi nguy hiem cua

chuyen ddng dodn tdu vd cdc hi4n luong xdy ra a h4 thdng hinh thanh lenh hdm trong he thong

tin hieu ddu may vd tu dpng dirng Idu

Summary: Using decision table methods to build event tree for analysis of train operation

safety by establishing relationships between the dangerous states of train movements and

phenomena occurring in the braking system in the cabin signal system and automatic tram stop.

I. DAT VAN DE

Khi xdy dyng he thdng kj thugt mdi, cdng viec nghien ciru cay cac trd nggi nguy hiem

(mpt dgng ciia cay sy kien) cdn dugc thyc hi6n ngay d nhiing budc ddu tien cua cdng tdc thilt

ke. He thdng tin hieu dau may va ty ddng dirng tau tuy da cd mat trong cdc he thdng dieu khien

chgy tau d mpt sd nude nhung ddi vdi nude ta se la mdi khi dua hp thdng nay vao sir dung. De

ddm bao an toan chay tau can xay dyng dugc cay cac trd nggi nguy hiem ciia hp thdng nay.

II. NOI DUNG

Trong he thdng ty ddng hinh thanh lenh ndi mgch he thdng ham cua doan tdu (hinh I) gdm

cac thilt bj ciia he thong tin hipu ty ddng dau mdy TTD, thiet bj do tdc dg thyc tl ciia doan tdu

Va.

->^ -

DT va thiet bi hinh thanh lenh HL khdi dpng he 'CI' I 1 'no . ' 1 •• 1 •

——A TTD —-- > thdng ham cua dodn tau. Khi phan tich, thiet bi

TTD, thilt bj DT, thilt bj HL dugc xem nhu la

cdc phan tii ciia he thdng.

Thilt bj HL can hinh thdnh dugc lenh khdi

f , • ^ ^= , . - ;- il.u- 1. done he thong ham cua dodn tdu khi tdc dp

Hinh 1. So do chtrc nang hmh thanh v & . t. ^ _ •

linh tu dpng khdi dpng he thong ham dodn tdu thyc te V.pi- ciia doan tdu dgt den van tdc cho

Tap chi KHOA HOC GIAO THONG VAN TAI S6 37 - 03/2012 59