Railway Signalling and Interlocking with Enhance Safety System using PLC and SCADA

The paper illustrates a design of railway signalling and interlocking with enhanced safety system using PLC and SCADA. The Indian railway is considered as the largest railway network in Asia, but there are few drawbacks which can be rectified by using railway signalling and interlocking system. In Indian railways, signalling and interlocking process is not completely au tomated, but being still managed by railway employees. During train crossing, there are ample works which are required by human interference, which causes problems in railway interlocking system like delay, collision, chain pulling, and passenger security etc. Hence, these problems can be solved by applying PLC and SCADA. The main task of interlocking is to provide a route request at suitable managing points and signals, which will not cause any collision. The proposed work are dependent on PLC, which are capable of performing signalling and interlocking process automatically which can even be changed, corrected and observed by using SCADA system, resulting in reduction of human involvement.