Implementation of Vending Machine usingFSM

UNDER THE GUIDANCE OF

Presented By

AMIT KUMAR GOYALQHS-47 (ASE)CSIR-CEERI

DR. ABHIJIT KARMAKARSCIENTIST

IC DESIGN GROUP [CSIR-CEERI]

Introduction

Operation of Vending Machine

Implementation of Vending Machine

Design Methodology

Schematics Diagram

Simulation Results

Conclusions

References

Acknowledgment

Contents

INTRODUCTION

Vending machine is a machine that dispenses product after a customer deposits money.

User will insert money

When money become equal to product price

machine will dispense the product.

If there is any change, machine will return it. If cancel button is pressed user will get his

inserted money back.

Operation of vending machine

Implementation of vending machineName Direction DescriptionA Input 1 RsB Input 2 RsC Input 5 RsD Input Cancel InputP Output ProductCH (X Y Z)

0 0 00 0 10 1 00 1 11 0 0

Output ChangeNo Change1 Rs Change2 Rs Change3 Rs Change4 Rs Change

Design MethodologyReset

Insert Coin2 Rs (b)

1 Rs (a)

5 Rs (c)

If total = 4 RsP=1

If total > 4 RsP=1

If total < 4 RsP=0

CH(X, Y, Z)

d=1

Schematics Diagram

Internal Schematics Diagram

Ist Part2nd Part

All FF 3rd PartAll

output

D Flip Flop

Extracted Layout

ofD Flip Flop

All Flip Flop Combine

Extracted Layout

ofAll Flip

Flop

AllOutput

Extracted Layout

ofAll output

Final Layout of vending

Simulation Results (2 Rs coin is inserted)

clk

a

b

c

d

P

Simulation Results (5 Rs coin is inserted)

clk

a

b

c

Z

P

Simulation Results (2 Rs coin is inserted)

clk

a

b

Y

d

P

Extracted Simulation Results (5 Rs coin is

inserted)

clk

a

b

c

Z

P

Conclusion

Implementation of Vending Machine using FSM has been described.

Schematic and Layout of different components used in design are

made and their output is verified.

Layout of final schematics is made and extracted layout has been

simulated, which also provides desired results.

References[1] Zhang Wen & Zhang Xin Long (2010) “Design and Implementation of automatic vending

machine Based on the short massage payment” International Conference on Information

and Communication technology in Electrical Sciences, Neijiang, Sichuan, China.pp.978-

981.

[3] Biplab Roy & Biswarup Mukherjee (2010) “Design of Coffee Vending Machine using Single

Electron Devices”Proceedings of 2010 International Symposium on Electronic System

Design.

[4] C. J Clement Singh, K Senthil Kumar, Jayanto Gope, Suman Basu & Subir Kumar Sarkar

(2007) “ Single Electron Device based Automatic Tea Vending Machine” proceedings of

International Conference on Information and Communication Technology in Electrical

Sciences (ICTES 2007) , pp 891-896.

[2] B. Caulfield & M.O Mahony (2005) “Passenger Requirements of a Public Transport

Ticketing System” Proceedings of the 8th International IEEE Conference on Intelligent

Transportation Systems Vienna, Austria, pp-32-37.

I express my gratitude and appreciation for all those with whom I worked and interacted at IC Design Group, Central Electronics Engineering Research Institute (CSIR-CEERI), Pilani (Raj) and thank all of them for their help and co-operation.

I am thankful to Dr. Chandra Shekhar, Director, CSIR-CEERI for providing me an opportunity to work in this elite institute of Indian Scientists.

I owe my sincere gratitude to Dr. Abhijit Karmakar, (Scientist ICDG) CSIR-CEERI, Pilani for their useful guidance, invaluable advices and suggestions at every stage of the

project, without which it would have been hardly possible to complete the task. It is a great privilege to have an opportunity to work and learn a lot under their guidance.

I also express my extended thankfulness to Mr. Anil Saini, Mr. Pushpendra, Mr. Yashu for their support during my experiments and also sharing their ideas for my smooth sailing of the project.

Acknowledgement

Last but not the least, I would like to thank all my friends who directly or indirectly helped me, and made my stay at pilani memorable and pleasant.

THANKS