15-09-2010, 12:26 AM
hi,i am nirav patel.
i want some information about railway gate controlling & track switching.i also want ppt for this topic.i know how gate contol works.i dont know how track switching work.i dont know for available components of this topic.
i have abstract of this topic.
At present scenario, in level crossings, the railway gate is operated normally by a gate keeper after receiving the information about the train's arrival. When a train starts to leave a station, station master of the particular station delivers the information to the near by gate. The above said procedures are followed for operating the railway gates.
Semiautomatic railway gate operation is also followed in certain areas. Signals are located
in the vicinity of the railway gate along with gate master board and a marker light. Our paper
deals with automatic railway gate control (i.e.) gate operated with out gate keepers. It is
implemented in unmanned level crossings at remote areas.
SCHEMATIC DIAGRAM:
.The arrival of the train to reach the level crossing is sensed by the sensor R1/R2 placed on
either side of the gate at about 5 km from the level crossing. So the arrival is sensed by the
either side of the sensor and then the sensed signal is sent to the microcontroller.
First we are calculating the velocity of the train by using IR sensor fixed in particular
distance. Two set of IR sensors are placed before the gate. When the first set of IR sensor is
interrupted we have to start the times and second set of IR sensor is interrupted we have to stop the times.
IR SENSING CKT:
Infra red transmitter sensor gives the infra red rays, this wavelength depends upon the
input frequency of the sensor. If frequency is high, wavelength is high .IR receiver sensor
resistance depends upon the receiving IR signal. if receiver receives signal from transmitter,
the resistance of the resistor will be low .If receiver does not get signal from the transmitter,
its resistance will be high .so we get some voltage drop across the receiver depends on the
resistance of the receiver.
