An Interlocking System Against Human Errors With A Scalable, Low Cost, Space Saving Architecture
Free (open access)
K Kamijou, Y Tomita, K Ishii, H Watabe & D Watanabe
Safety has the highest priority in railway track maintenance work. A new electronic interlocking system has been developed to strengthen maintenance work safety. It prevents human errors in interlocking logic definitions and the safety check sequence at the work place. Furthermore, the amount of the hardware of the developed system can be flexibly fit to any scale of stations with a low life-cycle cost and small installation space. A distributed architecture with one CPU device, several interface unit devices, and fibre-optic LAN provides the flexible scaling of the system. A new control data definition dodge eliminates the aged field interlocking structure of wired logic circuits of electromagnetic relays to lower cost and space requirements.