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  1. 1. PRESENTED BY :- PARAMA GHOSH(26) ASHISH KUMAR(27) ANANYA MANDAL(28) MOUMITA DEY(22) ECE DEPARTMENT OF GREATER KOLKATA COLLEGE OF ENGINEERING AND MANAGEMENT,KOLKATA
  2. 2. ACKNOWLEDGEMENT We wish to express our thanks to Prof. Gour Gopal Jana (ECE Dept.),Greater Kolkata College of Engineering & Management . Our greatest thanks go to our teachers especially Prof. Sunipa Kundu , (ECE Dept.) for all the suggestions made and for their encouragement and support during the preparation of this technical Presentation. Our thanks is also due to our family members and some friends for their constant encouragement and enthusiasm time to time. Date :24 NOVEMBER,2014
  3. 3. CONTENT  INTRODUCTION  BLOCK DIAGRAM  CIRCUIT DIAGRAM  WORKING PRINCIPLE  COMPONENTS  APPLICATIONS  ADVANTAGES  CONCLUSION  REFERENCES
  4. 4. INTRODUCTION  Controller based model to count number of persons visiting particular room . It receives the signals from the sensors. Signal is operated under the control of software which is stored in ROM All program is monitor by microcontroller AT 89C52
  5. 5. Block Diagram Sensors Display Microcontroller Logical Unit Power Supply 5V
  6. 6. CIRCUIT DIAGRAM
  7. 7. WORKING PRINCIPLE  This counter Sensor consist of 3 Section  Detect Object (Sensor) o Data Processing (CPU) o Display by LCD /7 SEGMENT module. o Count number of person enter and exit from room.
  8. 8. COMPONENTS  IC1 - LM324 quad op-amp  IC2 - 74LS76 J-K flip-flop  IC3 - AT89C52  T1, T2 - npn phototransistor  T3, T4 - npn transistor  IR TX1, IR TX2 - IR transmitting LED  Capacitors:  XTAL - 12MHz crystal  X1 - 230V primary to 7.5V  BR1 - 1A bridge rectifier  DIS1-DIS3 - LTS543 CC 7- segment display  Resistors (all ¼-watt, ±5% carbon):
  9. 9. MICROCONTROLLER(AT89C52)
  10. 10. INTERNAL BLOCKS OF MICROCONTROLLER 89C52
  11. 11. CAPACITOR  Store energy  Application Motor starters, Tuned circuits, Sensing, Oscillators, Signal processing, High-pass and low-pass filters  connections
  12. 12. IR TRANSMITER AND RECEIVER  Receiver connect with 5V  Signal comes then outputs is low.  LED is use for transmission.  Operate with 5V.
  13. 13. OTHER COMPONENT  Message display in LCD  Flip flop use for two stable state  Crystal is use for electrical signal
  14. 14. APPLICATIONS  Auditorium  Conference halls  Multiplex  Offices  Sports venue
  15. 15. ADVANTAGES  No need of human intervention.  Can work 24x7 without any problem.  Low cost and very easy to implement
  16. 16. CONCLUSION  We just took up this project as we were interested in electronics and wanted to learn about it. Through this project, we learnt a lot about the functioning and use of different electronic components and their applications in real life. We were able to correlate what we studied in our course to real life.  Also this is very simple and effective idea which can be used in many places like hostel and hotel rooms to save energy.  Thanks to our faculty for guiding us in this project. CONCLUSION
  17. 17. REFERENCES  www.howstuffworks.com  www.dnatechindia.com  www.answers.com  http://youthworldcom.blogspot.in/p/digital-visitor- counter.html Magazines:  Electronics for you  Electrikindia

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