16-01-2010, 11:28 PM
PREPAID CARD FOR PETROL BUNK SYSTEM
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Objective:
The objective of this project is to provide easy access and save time in the petrol bunk.
Scope:
This project is made the automated petrol bunk. The customer need not wait in the petrol bunk. It reduces the time as well as man power.
Brief Methodology:
This project is designed with
¢ Microcontroller
¢ Prepaid card
¢ Relay with driver circuit
¢ Keypad
¢ LCD display
In this project the customer having the prepaid card. The card is nothing magnetic member is embedded in the card. The reader circuit generates majestic signal to read the majestic number. When customer inserting this card on the reader, the reader reads that majestic number and given the corresponding signal to microcontroller. In microcontroller we have already programmed. So it checks the number wheather it is related to Hindus than Petroleum, Bharat Petroleum or Reliance Petroleum card corresponding information is displayed on the LCD display. The keypad is used to enter the quantity of petrol. In microcontroller we already set time for liters. When you entered the desired quantity on the keypad. Microcontroller activates the relay driver for that particular time period.
The driver circuit is used to turn ON, turn OFF the relays. Relay output is directly connected to petrol pump. So it pumps the petrol as per our desired quantity entered in the keypad. The petrol quantity and their corresponding cost are displayed on the LCD display. Hence this project made the automated petrol bunk in coder to save time and manpower.
BLOCK DIAGRAM DESCRIPTION
SMART CARD
A smart card, chip card, or integrated circuit(s) card (ICC), is defined as any pocket-sized card with embedded integrated circuits. Although there is a diverse range of applications, there are two broad categories of ICCs. Memory cards contain only non-volatile memory storage components, and perhaps some specific security logic. Microprocessor cards contain memory and microprocessor components.
The standard perception of a "smart card" is a microprocessor card of credit card dimensions (or smaller, e.g. the mini GSM SIM card) with various tamper-resistant properties (e.g. a secure crypto-processor, secure file system, human-readable features) and is capable of providing security services (e.g. confidentiality of information in the memory). Not all chip cards contain a microprocessor (eg. the memory cards), therefore not all chip cards are necessarily also smart cards. However, the public usage of the terminology is often inconsistent.
A
MICROCONTROLLER
INTRODUCTION TO MICROCONTROLLER
Microcontrollers are destined to play an increasingly important role in revolutionizing various industries and influencing our day to day life more strongly than one can imagine. Since its emergence in the early 1980's the microcontroller has been recognized as a general purpose building block for intelligent digital systems. It is finding using diverse area, starting from simple children's toys to highly complex spacecraft. Because of its versatility and many advantages, the application domain has spread in all conceivable directions, making it ubiquitous. As a consequence, it has generate a great deal of interest and enthusiasm among students, teachers and practicing engineers, creating an acute education need for imparting the knowledge of microcontroller based system design and development. It identifies the vital features responsible for their tremendous impact, the acute educational need created by them and provides a glimpse of the major application area.
MICROCONTROLLER
A microcontroller is a complete microprocessor system built on a single IC. Microcontrollers were developed to meet a need for microprocessors to be put into low cost products. Building a complete microprocessor system on a single chip substantially reduces the cost of building simple products, which use the microprocessor's power to implement their function, because the microprocessor is a natural way to implement many products. This means the idea of using a microprocessor for low cost products comes up often. But the typical 8-bit microprocessor based system, such as one using a Z80 and 8085 is expensive. Both 8085 and Z80 system need some additional circuits to make a microprocessor system. Each part carries costs of money. Even though a product design may requires only very simple system, the parts needed to make this system as a low cost product.
To solve this problem microprocessor system is implemented with a single chip microcontroller. This could be called microcomputer, as all the major parts are in the IC. Most frequently they are called microcontroller because they are used they are used to perform control functions.
The microcontroller contains full implementation of a standard MICROPROCESSOR, ROM, RAM, I/0, CLOCK, TIMERS, and also SERIAL PORTS. Microcontroller also called "system on a chip" or "single chip microprocessor system" or "computer on a chip".
A microcontroller is a Computer-On-A-Chip, or, if you prefer, a single-chip computer. Micro suggests that the device is small, and controller tells you that the device' might be used to control objects, processes, or events. Another term to describe a microcontroller is embedded controller, because the microcontroller and its support circuits are often built into, or embedded in, the devices they control.
Today microcontrollers are very commonly used in wide variety of intelligent products. For example most personal computers keyboards and implemented with a microcontroller. It replaces Scanning, Debounce, Matrix
