By F. Richard Yu
With quick inhabitants explosion, enhancing rail transit pace and capability is strongly fascinating all over the world. Communication-based educate keep watch over (CBTC) is an automatic teach regulate procedure utilizing excessive means bidirectional train–ground communications to make sure the secure operation of rail cars. This e-book offers the newest advances in CBTC study. The contributed chapters from prime specialists within the box conceal varied points of modelling, research, layout, checking out, administration, deployment, and optimization of CBTC systems.
Advances in Communications-Based educate keep an eye on Systems starts with the history and evolution of educate signaling/train keep watch over platforms. It introduces the most good points and structure of CBTC structures and describes present demanding situations and winning implementations around the globe. next contributed chapters speak about such key study components as
- Nondestructive checking out innovations that may be hired to examine rails and fastening parts
- New instant channel modelling innovations for underground tunnels and viaducts
- Advanced instant verbal exchange platforms to enhance CBTC communique availability
- Schemes to combine educate regulate and train-ground communications via modelling the regulate approach of a gaggle of trains in CBTC as a networked keep watch over system
- Use of cognitive keep an eye on to enhance teach keep watch over functionality, contemplating either train–ground verbal exchange and teach control
The ebook comprises many aiding illustrations and tables in addition to a invaluable set of references on the finish of every bankruptcy. With this e-book, researchers and practitioners could be well-equipped to boost the examine and improvement during this very important field.
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The test goal is to verify the presence of the field item in the database, and that the proper type of item has been set up in the database. The actual position of the field item in the database is only demonstrated, which is not proven by test. Position of field equipment in the database is validated, thanks to a rigorous process of verification of the surveyed data and database creation. Once all the basic functions are verified, more advanced tests can be performed. Failure scenarios of the CBTC and ATS are performed.
2 Migrating an Existing Line: Brownfield Project In large cities where the railway infrastructure was created decades ago, the cost of building a new line is very high and the time to create a new line is very long. Transit agencies prefer improving the capacity of existing lines in only a few years. Buying new trains with better performance and more passenger space is a possibility to improve the line capacity. In addition to or instead of buying new trains, the transit agency might decide to upgrade to CBTC technology to increase capacity by minimizing the headway between trains.
The art of testing CBTC is in choosing the functions to be tested along with what needs to be repeated at every location in the field. Because CBTC is such a complex system, it is not possible to verify each function in all conditions at every field location. Tests must focus on safety-related functions to build confidence in the system. Factory tests are not sufficient to provide enough confidence to the transit authority to let a system start revenue service without witnessing on-site that the system behaves in a safe manner.