COMPUTER BASED INTERLOCKING

[Audio] COMPUTER BASED INTERLOCKING Computer-based interlocking (CBI) is a technology used in railway signaling systems to control train movements and ensure the safe operation of trains on a network. Traditionally, interlocking systems were implemented using mechanical or relay-based systems, but with the advancements in computer technology, computer-based interlocking systems have become more prevalent. In a railway system, interlocking is the process of coordinating the movements of trains to prevent conflicting routes or collisions. It involves controlling signals, points (switches), and other railway elements to ensure that trains can move safely through the network. Computerbased interlocking systems utilize computer hardware and software to perform these functions. Here's how computer-based interlocking typically works: 1. Sensors and Inputs: Various sensors placed along the tracks provide information about the position of trains, the status of signals, and the position of points. These sensors send input signals to the interlocking system. 2. Interlocking Logic: The interlocking system consists of computer hardware and software that processes the input signals and applies the interlocking logic. The logic determines which routes are allowed for each train based on the current state of the system, including the positions of other trains and the state of signals and switches. 3. Safety Checks: The interlocking system performs safety checks to ensure that conflicting routes are not set and that trains can move safely. It verifies that signals are set correctly, switches are in the proper position, and there are no conflicts with other trains or movements. 4. Control Outputs: Based on the interlocking logic and safety checks, the interlocking system generates control outputs to operate signals and switches. These outputs control the positioning of signals and the alignment of switches to set the desired routes for trains. 5. Train Movement: Train control systems receive the output signals from the interlocking system and use them to govern the movement of trains. The system can automatically set routes, adjust signals, and control train speeds to ensure safe and efficient operation. Computer-based interlocking offers several advantages over traditional relay-based interlocking systems. It provides more flexibility, easier maintenance, and improved diagnostic capabilities. Additionally, computer-based systems can integrate with other railway control systems, such as train control, signaling, and centralized traffic control, to create a more efficient and automated railway network. Interlocking: Arrangement of of signals, points and other appliances, so interconnected by mechanical or electrical locking that their operation takes place in a predetermined sequence to ensure that conflicting movement of signals and points do not take place and train runs safely increase in the number of points and signals.