im starting work on a system in which the un-attended railway gates would get automated... the idea is, that wen the coming train would reach a certain point before the gate, some sensor would sense it, and the gate would shut down. and wen the train passes ahead, it would b detected by another sensor which would once again open the closed gate.. now can someone help me chose a better sensor?? which kind of sensors shoud i use?? ... i thought of using IR sensors, or LASER.. but someone told me that they both won't work properly.. im very new to this "automation" thing.. i need help in chosing a better sensor...
looking forward to ur advises.
hamza
looking forward to ur advises.
hamza