Logical Gates
Posted: 07 Aug 2010 13:11
Hi all,
I want try to a different approach on signaling the junctions. Therefore I'm in need of a pre-signal, that shows GREEN when the block behind is occupied, negating the signal (NOT). A normal pre-signal works as OR-gate, showing green when at least one track is free. An AND gate can be designed by connecting all the tracks after the exit-signal. For complex signaling, such as XOR, NAND and NOR i need the one that inverts the signal.
Imagine: I have a multiple track Mainline (4 for each direction). On my junctions from the sideline to the mainline I want to just connect the most outer line, which makes construction much easier. To give trains on the sideline the possibilty to join the mainline quite effective, it is necessary, that the outer most track is used as less as possible.
I want to force everey train on this track to switch if possible, so that the outer track is free most of the time. This approach isn't that new at all, but very hard to realize at the moment. With such a new signal, it could be versy easy to force trains to switch the track.
Greetings
I want try to a different approach on signaling the junctions. Therefore I'm in need of a pre-signal, that shows GREEN when the block behind is occupied, negating the signal (NOT). A normal pre-signal works as OR-gate, showing green when at least one track is free. An AND gate can be designed by connecting all the tracks after the exit-signal. For complex signaling, such as XOR, NAND and NOR i need the one that inverts the signal.
Imagine: I have a multiple track Mainline (4 for each direction). On my junctions from the sideline to the mainline I want to just connect the most outer line, which makes construction much easier. To give trains on the sideline the possibilty to join the mainline quite effective, it is necessary, that the outer most track is used as less as possible.
I want to force everey train on this track to switch if possible, so that the outer track is free most of the time. This approach isn't that new at all, but very hard to realize at the moment. With such a new signal, it could be versy easy to force trains to switch the track.
Greetings