ABSTRACT:

With the title itself, one can understand that this project is exclusively used to give the information of the forthcoming station to the passengers in the train. Most of the passengers do not bother about the stations arriving until their destination station arrives. There may also be chances like they miss their destination and has to get down at some other station and go back to reach their destination. To get rid of this kind of problems, we have designed a project “Automatic Station Indication System”.

This project uses wireless communication, RF. RF has the advantages of fast communication for longer distances and reliability. The RF modules used here are STT-433 MHz Transmitter along with an RF encoder HT12E, STR-433 MHz Receiver along with an RF decoder HT12D.

Every station will be having the RF transmitter, an IR transmitter and receiver pair which will be interfaced to the controller. The RF transmitter will be interfaced to the controller through an RF encoder to encode the data receives by the controller and to transmit the data. The RF receiver which interfaces the controller through an RF decoder will be fixed in every compartment in the train. Here the RF decoder is used to decode the signal received by the transmitter. As the train moves and approaches, it will be sensed by the IR receiver so that the corresponding signal will be passed to the controller. The microcontroller will be programmed in such a way that it will pass the corresponding information to the RF encoder, if it recognizes the signal change from RF receiver. So that the RF transmitter will transmit the corresponding encoded data. The RF receiver present in the train will receive this information and will pass the decoded data to the controller so that the controller performs the predefined task of displaying the corresponding data on the LCD. Thus the passengers can know the forthcoming station and act accordingly. Here in our project APR9600 voice module will also be provided for the audio indication of station arrival.It gives the audio output of the prerecorded voice whenever required, as per the program.

This project uses regulated 5V, 500mA power supply. Unregulated 12V DC is used for relay. 7805 three terminal voltage regulator is used for voltage regulation. Full wave bridge rectifier is used to rectify the ac output of secondary of 230/12V step down transformer.

TECHNICAL SPECIFICATIONS:

HARDWARE:

Micro controller         :           AT89S52

Crystal                        :           11.0592 MHz

LCD                            :           HD44780

RF transmitter             :           STT-433MHZ

RF receiver                 :           STT-433MHZ

RF encoder                 :           HT12E

RF decoder                 :           HT12D

IR transmitter

IR receiver

Voice module             :           APR9600

Power supply

Transformer                :           12V step down 

Filter                           :           1000uf/25V

Voltage Regulator      :           7805

SOFTWARE :

Keil microvision

proteus

UC flash

APPLICATIONS:

• Industrial
• applications