COLLISION/CRASH AVOIDANCE SYSTEM DESIGN:
I am working on a crash avoidance system. I use multiple blocks and block occupancy sensing so that I can tell if a train is approaching another stalled or derailed engine or uncoupled cars on an adjoining block.
This system will be used where track visibility is a problem especially in tunnels, etc.
This will involve the use of a combination of interlocking relays, MTH ITADs and high current diode strings for occupied track detection.
The objective is to warn the operator of a potential collision using a visual and audible warning. I will make no attempt to automatically stop or slow an engine via the DCS system. All I need to do is detect the presence of a locomotive or car on a section of track and if an oncoming engine approaches an occupied block the system will alert the operator. I can provide a PANIC button that kills the voltage on the occupied block since ALL my blocks are controlled using indivdiual relays. This system does not rely on the DCS system although the operator can take corrective action via the DCS as an optional response.
