14 Signalling and Control Systems (Railway Engineering Lectures هندسة السكك الحديدية & Dr. Walied A. Elsaigh)
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The document discusses railway signaling and control systems, emphasizing the importance of safe and efficient train operation. It classifies signals based on operating, functional, locational, and special characteristics, detailing various types such as semaphore and visual signals. Additionally, it explores control systems, including time interval and space interval methods for managing train movements.
14 Signalling and Control Systems (Railway Engineering Lectures هندسة السكك الحديدية & Dr. Walied A. Elsaigh)
- 1. Dr. Walied A. Elsaigh welsaigh@ksu.edu.sa Asst. Prof. of Civil Engineering Rajab - 1435H CE 435 Railway Engineering Signalling & Control Systems Adapted from : http://www.roscalen.com/signals/
- 3. Introduction Signalling consists of the systems, devices and means by which trains are operated efficiently and rail tracks are used to maximum extend, maintaining the safety of passengers, the staff and rolling stock
- 4. Classification & Types of Signals Signals can be classified to: Operating Characteristics (How signal is operated?) Functional Characteristics (What is signal function?) Locational Characteristics (Where signal is located?) Special Characteristics (Not popular)
- 5. Classification & Types of Signals Operating Characteristics (How signal is operated?) Detonating signals (Fog or audible) Visual indication signals Hand signals Fixed signals
- 6. Classification & Types of Signals Functional Characteristics (What is signal function?) Semaphore signals Warner signals Coloured- light signals Shunting signals Post-mounted disc Ground http://www.railsigns.co.uk/overseas/india1/india1.html
- 7. Classification & Types of Signals Locational Characteristics (Where signal is located?) Reception signals Outer signal Home signal Departure signals Starter signal Advance starter signal
- 8. Classification & Types of Signals Special Characteristics (Not popular) Repeater (co-acting) signal Routing signal Calling on signal Point indicator signal Miscellaneous
- 9. Semaphore Signalling Rectangular –like arm fixed to a vertical post. The arm is allowed to rotate in various angles. Each position conveys certain information to the loco driver Adapted from: http://en.wikipedia.org/wiki/File:Signal_Home_%26_Distant_Semaphore_RYG.svg
- 10. Control Systems Time Interval Method Time Interval Space Interval How Train Movement is Controlled?
- 11. Control Systems Space Interval Method Length of the track is divided into sections (BLOCKS). The entry of a train into the block is allowed only when the block is free. {Leave a space between two consecutive trains} Visual signals Audible signals