In this project we will control metro train with our PC. We will send data from parallel port to microcontroller and microcontroller will control metro train.
This project is very important for PC communication with machinery. We know that today is the world of automation. There is increasing competition making it necessary to make it necessary to use reliable, low cost and accurate automatic system. With the help of this project we can control the all our metro train with our PC with out the need of any control panel there will a small control panel for control of different switches. We need to make a small program in C_++ . in this program we will control the appliances with parallel port moreover we will use wireless technology.we will use optocoupler at the end of PC parallel port.
In this project we use ic 89c51 microcontroller to control all the logic , movement of vehicle, stoppage of vehicle, and reverse action of vehicle with the help of this microcontroller and different sensor’s.
In this project we use dc gear motor to run the vehicle to and fro automatically. We use slow speed dc motor to increase the torque and slow the speed of vehicle, this DC motor is run by a 5 volt to 12 volt dc voltage. We use additional gear box if we want to slow down the speed.
In this project we use infra red sensor to stop the train and infra red sensor to reverse and again forward the train.
So we use three pair of infra red reflective sensor in this project. One at the bottom of this train, second in the front of this train and third at the reverse of this train.
By using three sensor we not only stop the train but also reverse the train.
As per logic in concern we use three inputs in this project, one from the ground sensor and two from the front and back sensor.. Three input and one motor.
Here in this project we use dc motor to run the vehicle, for the dc motor we use H bridge circuit in this project. H bridge circuit not only drive a sufficient power to dc motor but also provide a forward and reverse logic to the motor .