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Object CounterEE Project ME-05 B Group 8
Muhammad Hassan Tariq Muhammad Umair Qazi Ali Faizan Wattoo
Contents • Introduction
• Components used
• Challenges faced
• Schematic diagram
• Working of the circuit
• Applications
• Learning oucomes
• Conclusion
Our Motivation• Some daily life problems..
• Counting manually is boring and monotonous!
• Existing devices are expensive
Labour Division• Project Selection ALL
• Analysis on Proteus Umair
• Project Proposal Ali & Hassan
• Logistics Ali & Umair
• Testing & Setup ALL
• Research Support Hassan
• Final Project Report ALL
About our circuit…• Employs an LDR to ‘see’ the object moving
past it
• The change in light intensity triggers a signal through the OP-AMP to the IC
• The IC causes an increment to be shown on the display
Components Used• CD 4026 7-segment dual power decode counter
• LDR
• 4 resistors, 1M-ohm each
• 7 segment display (common cathode)
• UA 741 op-amp
• DC power supply (5V)
Challenges encountered
• Logistics
• Faulty components
• Non-availability of Digital Training System
• Lack of sound knowledge about practically using ICs and op-amps.
Circuit Diagram
Working of Circuit• Basic Principle: Whenever there
is a light blockage, resistance of LDR increases which causes the display to increment by 1.
• The circuit requires an LDR, op-amp, decode counter and a display mainly.
• Display shows digit ‘0’ when power supply is turned on.
• If the light reaching LDR becomes less intense, a signal is generated by op-amp.
Working of Circuit continued…• The decode counter decodes the signal and then feeds it into the 7-
segment display.
• The digit on display is incremented by one accordingly.
Video
Applications:
• It can be used as a counter outside of the parking facilities
• it can be used in seminar halls etc. to keep a count of attendants and prevent overcrowding
• High-production industries can make use of this counter to keep record of the amount of products to calculate production rate etc.
• With a slight modification, it can be used in banks and offices in money counter machines
• & a lot more…….. !!
Learning Outcomes:• Learnt the function and working of different electrical
components e.g resistors, ICs , LDRs, Op-Amps etc.
• We learnt the use of “Digital Analogue Training System”
• We learnt to use “proteus” & analyze a circuit on it.
• Working of a seven segment display.
• Electrical components should be handled carefully within there voltage ranges. (As we happened to end up with a burnt IC & a 7 segment display)
• How to work in teams & co-ordinate with each other to come up with the best solution saving time & money
• & try try again !!!
Conclusion:
• Our “LDR counter” can count 0-9 whenever there is light blockage, however this range can be increased as per requirement
• It is a simple, efficient & cost-effective solution when it comes to counting.
• It has many useful applications as discussed
• relax & enjoy a cup of tea while It makes the “tiresome” counting process for you!
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