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GPS BASED WELL GROOMED SYSTEM FOR MISSING ATM CARDS

Platform : EMBEDDED

GPS BASED WELL GROOMED SYSTEM FOR MISSING ATM CARDS

                  Receivers for aircraft are either built in with other instruments or are portable. The receivers come with a large screen and programmed databases that give coordinates of airports, airspace, runways, and other pertinent information. ATM information is a preventative measure that counters the possibility of a collision with another aircraft. Implementation of such project with actual microwave links is impossible since the first reason is the citizens should not use microwave links and also the rf link used for shorter distance coverage will cause interruption with nearer rf links due to harmonics hence for a demo purpose we use an ir link between the tower and vehicle and an RF OF 27MHZ link from tower to the control station

                   In this demo model we have made a ATM, which uses RF 27MHZ communication instead of actual microwave communication this project actually tracks a ATM and gives the area info of that PERSON to the control station thus this project, can also be stated as ATM monitor in this model we provide necessary tower which resembles similar to an cell phone networking while the vehicle lies inside the coverage of particular tower the tower name is displayed in an lcd display which is actually placed in the control station that is few meters away

                    The TRANSMIITER that is placed with the person emits modulated rf rays the rf receivers placed in the tower picks the RF rays emitted while the vehicle is inside the coverage range of that particular tower and the each tower is assigned with unique DTMF CODES while ir rays are picked by the tower it in turn generates a dtmf signal which is transmitted to the control station by a low power fm transmitter the FM receiver placed at the control station picks the fm signal and demodulates and retrieves back the dtmf signal the dtmf decoder placed after the receiver section converts the dtmf tones into binary codes the binary data is fed to the microcontroller At89c51 in turn drives a lcd display which displays the area information.

 

 

 

                            Block diagram

 

Transmitter section

 

rf receiver tower1

 

                                                                            

 

       
       
 

 

 

FM TRANSMITTER

 

rf receiver tower2

 

                                       

 

           
   
     
       
 
 

 

                                                                                                                                                                                               

 

    DTMF ENCODER

 

         UM91214B

 

     

 

   
   
 
   

 

 

 

 


Control unit: -

 

 
 

Power supply

 

 

                                                                   +5v for all sections

 

 
   

 

                                                                                                                               Gnd

 

 
   

 

 

 


                                                                                                          P3    LCD control bits

 

 

                                                     Strobe

 

 

                                                                                                            P1

 

 

 

                                                  Binary

                                                  Data bits

 

           


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