Project id : EE/PG/2011/07
Department of Electrical and
Electronics Engineering
Vignan Institute of
Technology And Management
( Vitam ), berhampur
Presented By,
Prayas Jagdev
(1101301048)
Bikram Choudhur (1101301040)
Prabhudutta Raulo(1101301047)
S Suman Patro
(1101301052)
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Girish Ku. Behera(1101301043)
Introduction
• This Project helps to count number of
visitors in a closed surrounding.
• Its working depends on the principle of
intensity of light.
• This circuit counts the number of visitors
entered and left and the result is shown in
a 7 segment display
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Components Required
•
•
•
•
•
•
•
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Counter IC :- CD4026 (2)
Display :- LTS543 common cathode (7 Segment display)
LDR :- Medium size
Transistor :- BC547 npn transistor
LED :- 5 mm red LED
Resistor :- 1kohm, 4.7kohm, 10kohm, 100 ohm
Switch :- Push to on switch
Connector :- 2 Pin Connector
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Circuit Diagram
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LDR :• Light controlled variable
resistor, and light- and
dark-activated switching
circuits.
• A photo resistor is made
of a high resistance
semiconductor.
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LED :-
7
BC547 :•
•
•
•
•
VCBO = 50v
VCEO = 45v
VEBO = 6v
IC = 100mA (DC)
PC = 500mW
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Resistor :• Passive terminal electrical
component.
• Reduce current flow, adjust
signal level.
• Can
alter
with
time,
temperature, operating Voltage.
• symbol: Ω
• ohm is equivalent to a volt per
ampere
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Counter :• Device which stores the
number of times a
particular event or process
has occurred.
• Decade Counter.
• Family of 4oo Series
• Buffered or unbuffered i/o.
• 16 pin CMOS 7 segment
Counter.
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SSD :-
Segment display with
decimal point
Conceptual & Visual
Diagram
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Pin Diagram
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Push-Button :• Made out of hard
material, usually plastic or
metal.
• people use different terms
for the "pushing" of the
button, such as press,
depress and punch.
• Used
in
calculators,
telephones,
kitchen
appliances, and various
other mechanical and
electronic devices.
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Working Principle
Entry Only
VC1
VC2
Exit Only
VC1: Visitors Entry Counter
VC2: Visitors Exit Counter
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Working Principle
Entry Only
VC1
VC2
Exit Only
VC1: Visitors Entry Counter
VC2: Visitors Exit Counter
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Working Principle
Entry Only
VC1
Exit Only
VC2
VC1: Visitors Entry Counter
VC2: Visitors Exit Counter
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Working Principle
Entry Only
VC1
Exit Only
VC2
VC1: Visitors Entry Counter
VC2: Visitors Exit Counter
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Conclusion
• Wastage of electricity is one of the main problems which we
are facing now days. In our home, school, colleges or industry
we see that fan / lights are kept on even if there is nobody in
the room. This happens due to negligence or when we are in
hurry. To avoid all such situations we have designed this
project called “ Visitor’s Counter”. Main concept behind this
project is to measures the number of persons entering in any
room like seminar hall, conference room, classroom. This
function is implemented using a pair of Counters. 7-Segment
display placed inside the room displays the value of persons
count. This persons count will be incremented if somebody
enters inside the room.
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