automatic unmanned level crossing

raviram87

New Member
hello people...

i want to work on a ciruit that does the following:
my goal is to build a circuit that helps in automatic gate closure in unmanned railway level crossings.
How can i build it?
my idea is as follows.. an ir beam is continuously being emitted across a track. as soon as a train crosses it, the circuit triggers a motor to close the gate.

can this work? can u help me on building this?
 
I hope its just for a model, that would be a poor way of doing it in real life for numerous reasons.
 
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