10-04-2017, 07:21 PM
PROJECT ON ATM CARD SECURITY SYSTEM
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Introduction
The advent of technology is increasing day by day. Man stopped carrying money purses or wallets with them wherever they go. Instead, they started carrying Credit Cards, Debit Cards and ATMs. They carry on with their shopping and pay the bill amounts using these cards. Thus, these cards have become a part of human life. But, if a human loses this card, the loss cannot even be imagined. When the technology brings out a new invent into light, the invent has its own advantages and disadvantages. As an engineer, it is our responsibility to use the technology in a right way at the best.
This project has been designed as a real time application to provide security to the ATM cards. Whenever the user inserts his ATM card into ATM machine, a message will be sent to the user mobile providing the details like time of card insertion, date, name of the user and place where the card has been inserted. This database will be maintained both in the bank and at the ATM center.
Overview of the technologies used
Embedded Systems:
An embedded system can be defined as a computing device that does a specific focused job. Appliances such as the air-conditioner, VCD player, DVD player, printer, fax machine, mobile phone etc. are examples of embedded systems. Each of these appliances will have a processor and special hardware to meet the specific requirement of the application along with the embedded software that is executed by the processor for meeting that specific requirement.
The embedded software is also called firm ware . The desktop/laptop computer is a general purpose computer. You can use it for a variety of applications such as playing games, word processing, accounting, software development and so on.
Hardware Implementation of the Project
This chapter briefly explains about the Hardware Implementation of the project. It discusses the design and working of the design with the help of block diagram and circuit diagram and explanation of circuit diagram in detail. It explains the features, timer programming, serial communication, interrupts of AT89S52 microcontroller. It also explains the various modules used in this project.
Power Supply:
The input to the circuit is applied from the regulated power supply. The a.c. input i.e., 230V from the mains supply is step down by the transformer to 12V and is fed to a rectifier. The output obtained from the rectifier is a pulsating d.c voltage. So in order to get a pure d.c voltage, the output voltage from the rectifier is fed to a filter to remove any a.c components present even after rectification. Now, this voltage is given to a voltage regulator to obtain a pure constant dc voltage.
Conclusion
The implementation of ATM card Security system using microcontroller is done successfully. The communication is properly done without any interference between different modules in the design. Design is done to meet all the specifications and requirements. Software tools like Keil Uvision Simulator, Proload to dump the source code into the microcontroller, Orcad Lite for the schematic diagram have been used to develop the software code before realizing the hardware.