By F. Richard Yu
With speedy inhabitants explosion, bettering rail transit pace and potential is strongly fascinating around the globe. Communication-based educate keep watch over (CBTC) is an automatic teach keep watch over method utilizing excessive means bidirectional train–ground communications to make sure the secure operation of rail automobiles. This publication offers the most recent advances in CBTC examine. The contributed chapters from top specialists within the box conceal diverse elements of modelling, research, layout, checking out, administration, deployment, and optimization of CBTC systems.
Advances in Communications-Based teach regulate Systems starts off with the heritage and evolution of teach signaling/train regulate platforms. It introduces the most beneficial properties and structure of CBTC structures and describes present demanding situations and profitable implementations world wide. next contributed chapters speak about such key study parts as
- Nondestructive checking out innovations that may be hired to examine rails and fastening parts
- New instant channel modelling thoughts for underground tunnels and viaducts
- Advanced instant communique structures to enhance CBTC communique availability
- Schemes to combine teach keep an eye on and train-ground communications through modelling the keep watch over procedure of a gaggle of trains in CBTC as a networked regulate system
- Use of cognitive regulate to enhance teach keep an eye on functionality, contemplating either train–ground verbal exchange and teach control
The ebook contains many helping illustrations and tables in addition to a important set of references on the finish of every bankruptcy. With this ebook, researchers and practitioners may be well-equipped to boost the study and improvement during this very important field.
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Additional info for Advances in Communications-Based Train Control Systems
However, it is not sufficient for the CBTC supplier to tune its train model used for proper ATO. CBTC suppliers perform what is called rolling stock characterization tests. The train is controlled by a special CC software. This special software sends commands to the train propulsion and brake system, and then speed sensors on board the train collect data about 28 ◾ Advances in Communications-Based Train Control Systems the train reactions. After the tests, the data are analyzed by CBTC experts in order to determine the train model characteristics.
Access can be more frequent and reorganized at the last minute depending on 20 ◾ Advances in Communications-Based Train Control Systems previous tests and software development. There is no transportation department to interface with during testing, which is usually a very time-consuming interface. Another advantage is that the interfaced system may also be under development so interface design issues can be resolved by changing the CBTC or the other systems. New lines are often for new or recent transit systems which are more likely to embrace new technology and accept the method of testing recommended by the CBTC suppliers.
Where there is frequency diversity, access points of each frequency are installed alternatively along the tracks. A radio tool on board the test train is used to measure the electromagnetic field with the radio link. On some projects, the radio tool can also be used to send, almost continuously, data packets through the network to monitor the number of packet losses. Both ends of the trains may be connected to the tool so that the tests are performed in parallel for each end. In order to verify radio coverage, the first test is done with the access points of only one frequency.
Advances in Communications-Based Train Control Systems by F. Richard Yu