25-09-2014, 10:31 AM
AUTOMATIC TRAIN SPEEED CONTROL BASED ON SIGNALS
[attachment=68498]
INTRODUCTION
Now a days there is a lot of problem with neglecting railway signals by the driver
in day today life. The driver may neglect the train signals or it may not be clear due to
fog etc that reflects accidents of trains at different places. We have taken the above
problem and found a solution that results in “automatic speed control of train based on
signals” developed with microcontroller.
Here we used an Infra Red (IR) transmitter at the signal terminal that
continuously transmits the communication code to the receiver based on the signals
detected (Red, Yellow or Green). We have established the receiver part in the train that
receives communication code from the transmitter, gives an alarm in the train and
subsequently displays the signal status on the 16X2 dot matrix display. Along with this
the speed of the train is also controlled by the microcontroller. It reduces the speed of the
train when yellow signal is detected, the train stops when red signal is detected, if green
is detected the train travels with full speed.
So here we have established asynchronous protocol for transmitting and receiving
data between signal and train with the help of two microcontrollers. The assembly level
program is written in microcontroller for executing entire operation.
BLOCK DIAGRAM DESCRIPTION:
Transmitter:
In this transmitter part we have used 89C2051 micro controller for the
purpose of detecting signal status and transmit appropriate 8-bit code to the receiver via
IR modulator. Here we have used three LED‟s (Red, Green, yellow ) to the input port of
the micro controller when the signal is ON the input port comes to bit 0, if the signal OFF
the input port comes to bit 1.
The Micro controller:
The micro controller receives IR data through RXD pin. The received data
is accumulated in serial buffer of 89C52 micro controller. It compares the data with the
predefined codes 00H, 01H, 02H. If the code received from IR receiver is equal to 00H
then the motor will be stopped. If the code is equal to 01H a low voltage is applied to the
motor and it rotates with low speed. If the code is equal to 02H then the motor rotates
with full speed by getting a voltage of 3V.In the first two cases an alarm indication is
given to the driver and subsequently the relevant signal status is displayed on the 16X2
dot matrix display attached to the output port of the micro controller in all three cases.
CONCLUSION AND FUTURE SCOPE
CONCLUSION:
This project is aimed to conserve the energy/power in various sectors such
as in railways, home appliances etc and it was successfully completed and implemented.
By using this system at Vijayawada Railway station we can save around Rs.5, 00,000/-
per annum.
Therefore by implementing this technique we can save large amount of
power and money
[attachment=68498]
INTRODUCTION
Now a days there is a lot of problem with neglecting railway signals by the driver
in day today life. The driver may neglect the train signals or it may not be clear due to
fog etc that reflects accidents of trains at different places. We have taken the above
problem and found a solution that results in “automatic speed control of train based on
signals” developed with microcontroller.
Here we used an Infra Red (IR) transmitter at the signal terminal that
continuously transmits the communication code to the receiver based on the signals
detected (Red, Yellow or Green). We have established the receiver part in the train that
receives communication code from the transmitter, gives an alarm in the train and
subsequently displays the signal status on the 16X2 dot matrix display. Along with this
the speed of the train is also controlled by the microcontroller. It reduces the speed of the
train when yellow signal is detected, the train stops when red signal is detected, if green
is detected the train travels with full speed.
So here we have established asynchronous protocol for transmitting and receiving
data between signal and train with the help of two microcontrollers. The assembly level
program is written in microcontroller for executing entire operation.
BLOCK DIAGRAM DESCRIPTION:
Transmitter:
In this transmitter part we have used 89C2051 micro controller for the
purpose of detecting signal status and transmit appropriate 8-bit code to the receiver via
IR modulator. Here we have used three LED‟s (Red, Green, yellow ) to the input port of
the micro controller when the signal is ON the input port comes to bit 0, if the signal OFF
the input port comes to bit 1.
The Micro controller:
The micro controller receives IR data through RXD pin. The received data
is accumulated in serial buffer of 89C52 micro controller. It compares the data with the
predefined codes 00H, 01H, 02H. If the code received from IR receiver is equal to 00H
then the motor will be stopped. If the code is equal to 01H a low voltage is applied to the
motor and it rotates with low speed. If the code is equal to 02H then the motor rotates
with full speed by getting a voltage of 3V.In the first two cases an alarm indication is
given to the driver and subsequently the relevant signal status is displayed on the 16X2
dot matrix display attached to the output port of the micro controller in all three cases.
CONCLUSION AND FUTURE SCOPE
CONCLUSION:
This project is aimed to conserve the energy/power in various sectors such
as in railways, home appliances etc and it was successfully completed and implemented.
By using this system at Vijayawada Railway station we can save around Rs.5, 00,000/-
per annum.
Therefore by implementing this technique we can save large amount of
power and money