04-04-2010, 12:21 AM
Abstract
This project is mainly based on the radio wave communication. The radio wave communication can be done either by A.M or F.M. The more desirable way of communication is F.M. because F.M is less susceptible to outside interference and noise (e.g., thunderstorms, nearby machinery) than is A.M. Such noise generally affects the amplitude of a radio wave but not its frequency, so an F.M signal remains virtually unchanged. F.M is also better able to transmit sounds in stereo than A.M. Commercial F.M broadcasting stations transmit their signals in the frequency range of 88 megahertz (MHz) The project is designed using F.M COMMUNICATION to avoid railway accidents happening at unattended railway gates, if implemented in spirit. This project utilizes two powerful IR transmitters and two receivers; one pair of transmitter and receiver is fixed at up side (from where the train comes) at a level higher than a human being in exact alignment and similarly the other pair is fixed at down side of the train direction. Sensors are fixed at 1km on both sides of the gate. We call the sensor along the train direction as Ëœforeside sensorâ„¢ and the other as Ëœaft side sensorâ„¢. When foreside receiver gets activated, the gate motor is turned on in one direction and the gate is closed and stays closed until the train crosses the gate and reaches aft side sensors. When aft side receiver gets activated motor turns in opposite direction and gate opens and motor stops. Buzzer will immediately sound at the fore side receiver activation and gate will close after 5 seconds, so giving time to drivers to clear gate area in order to avoid trapping between the gates and stop sound after the train has crossed.
Presented By:
Bonthapally Nikhil
0204-0435
CBIT, Hyd
read full report
http://nikhil.net63New%20Folder/Project%20Report.pdf
