Very good informative slide show

1. MICRO-CONTROLLER
BASED DI
GIT
AL
VI
S
I
T
OR COUNTER
G uided by: Jisha AgnesJose
Lecture
Dept. Of Electronics Engineering
C a rmelpolytechnic,punna pa ra
Abhijith B
Reg. No :20040733
Roll no 1

2. CONTENT
▶ INTRODUCTION
▶ BLOCKDIAGRAM
▶ WORKING PRINCIPLE
▶ COMPONENTS
▶ APPLICATIONS
▶ ADVANTAGES
▶ CONCLUSION
▶ REFERENCES

3. ▶Controller based model to count number of persons visiting particular
room
▶Itreceives the signals from the sensors.
▶Signal is operated under the control of softwarewhich is stored in
ROM
▶All program is monitor by microcontroller AT 89C52
I
NTRODUCTI
ON

5. ▶This counter Sensor consist of 3 Section
▶Detect Object (Sensor)
▶Data Processing (CPU)
▶Display by LCD /7 SEGMENTmodule.
▶Count number of person enter and exit from room.
WORKING PRINCIPLE

6. MICROCONTROLLER(AT89c52)

7. C O M PO NENTS
• IC1-LM324 quad op-amp
• IC2-74LS76 J-K flip-flop
• IC3-AT89C52
• T
1, T
2- npn phototransistor
• T
3, T
4 -npn transistor
• IRT
X1, IRT
X2 - IRtransmitting LED
• Capacitors:
• XTAL-12MHz crystal
• X1-230V primary to 7.5V
• BR1-1A bridge rectifierDIS1-
DIS3-LT
S543CC 7- segment
display
• Resistors(all-watt,
±
5%carbon):

8. CAPACITOR
▶ Store energy
▶ Application
Motor starters, Tuned circuits, Sensing, Oscillators, Signal
processing, High-pass and low-pass filters

9. IR TRANSMITER AND RECEIVER
▶Receiver connectwith 5V
▶Signal comes then outputs is low.
▶LED is use for transmission
▶Operate with 5V.

10. OTHER COMPONENT
▶Message display in LCD
▶ Flip flop use fortwo stable state
▶ Crystal is use for electrical signal

11. APPLICATION
▶Auditorium
▶Conference halls
▶Multiplex
▶Offices
▶Sportsvenue

12. ADVANTAGES
▶ No need of human intervention.
▶ Can work 24x7 withoutany problem.
▶ Low cost and very easy to implement

13. CONCLUSION
▶We justtook up thisproject 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.

14. REFERENCES
▶www.howstuffworks.com
▶ www.dnatechindia.com
▶www.answers.com
▶ http://youthworldcom.blog spot.in/p/dig ita l-visitor-counter
.html
Magazines:
▶Electronicsfor you
▶Electrikindia

15. THANKYOU