Unit 15 Signal 课件-2022-2023学年中职城市轨道交通专业英语上交大版

内容九 内容八 内容七 内容六 内容五 内容四 内容三 内容二 内容一 城市轨道交通专业英语 标题八 Part 5 Control Signal Unit 15 BAS Unit 16 标题八 Unit 15 Signal Objectives To understand what a signaling system is. To know the development of urban rail signaling. To understand the functions and importance of signaling. 标题八 Unit15 Signal Class Hour 2 hours 标题八 Unit15 Signal Sentence Section A Question: What can a metro signaling system do? Metro signaling is a complicated and amazing system. UK has a longer history of metro signaling than any other country. Metro signaling has similarities with railway signaling. To prevent any train delays, accidents, even casualties, it is important that a signaling system operated by a group of well trained people. 标题八 Unit15 Signal The most critical role that signals play in the metro system is to locate the whereabouts of trains and to protect trains from collisions. The most important components in a metro signal system are its electromechanical relays. If a metro signal fails, the signaling light will go to red and the train will stop until the failures are resolved. Most of metro signals have Green on top, Yellow in the middle and Red on the bottom. 标题八 Unit15 Signal Dialogue Section B Question: What does a metro signaling system consist of? What is the relationship between signaling system and ATC? Lin: Do you know how many systems are included in a metro signaling system and what they are? Peter: It contains six systems, moving block system, train testing system, automatic train protect system, automatic train operation system and automatic train supervising system. Lin: What is the relationship between ATC and signaling system? Peter: ATC system has three subsystems—ATO, ATP, and ATS. They are part of a metro signaling system, and ATC supports signal system and signaling system controls ATC. 标题八 Unit15