This was a pretty indepth project I undertook as part of my embedded system design course. The whole course basically
revolved around this model train set in one of the computer engineering labs. Our individual projects had to somehow
integrate with that train set. Mine was to locate the trains. I did this with ultra sonics which turned out to be a very
educational project.
The principal is simple. Like playing Marco Polo, this design can locate a vehicle in the same way only instead of actually
crying "Polo", a transmitter sounds an ultra sonic pulse that only a fine tuned receiver can detect. By placing receivers
in strategic locations, a processor can determine the source of the pulse by using simple geometry and physics based on
the time it takes for each receiver to acknowledge it's confirmed detection.
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