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!