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GSM and Microcontroller based automatic railway gate control system with feedback provision


Now-a-days many accidents are taken place at train crossing gate. This is because of railway gate man carelessness or it may be the problem of station master, who fails to pass information to the gate man about the train arrivals. Consider, there are three train crossing gate points between two stations. The station master should pass the information about the train arrival to all train crossing gate points one after another. If he fails to send information to gate man leads to train accidents at train crossing points.


To avoid such accidents, this project provides better solution for railway gate control. In this project, at each train crossing point a SMS based gate control system is implemented. In which, a GSM modem is used to receive user command as SMS. The station master himself monitors all the train crossing gates points between two stations in the control panel. If the station master finds the arrival of train to the stations, then he will send command to close the gate as SMS to the first crossing point. Whenever the gate is closed at the receiver end, a sensor detects it and sends an acknowledgement to station master as a feedback about the gate close. After acknowledgement is received, the station master provides the green signal to the train. If the train crosses the first crossing point, then the station master sends next message to another crossing point and this process continues until the train reaches the next station. If acknowledgement is not received by the station master, the message is sent again to particular crossing point. Until a valid Acknowledgement is received, the station master will not give green signal to the train. Each resending messages are identified with sequence of numbers, by using those numbers the station master is waiting for corresponding acknowledgement.


A GSM modem is used to receive commands as SMS from stationmaster. The microcontroller based circuit process the SMS validation and drives the DC motor to close or open the gate. The DC motor is controlled by using PWM technique. An IR or magnetic sensor is used to detect the gate close or not and sends the status to the microcontroller circuit. Then the controller circuit formats the acknowledgement as SMS and sends it to station master.

Block Diagram for GSM and Microcontroller based automatic railway gate control system with feedback provision
GSM and Microcontroller based automatic railway gate control system with feedback provision



Tags: GSM modem, automatic railway gate control, IR transmitter, IR receiver, magnetic sensor, DC motor, DC motor driver, PWM control DC motor, pulse width modulation, station master control board, 8051 microcontroller, SMS, train crossing gate point.

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