This document proposes a petrol bunk automation system using prepaid cards and GSM communication. The system uses RFID to read prepaid cards at the entrance gate and allows entry only for valid cards. It displays the card balance and prompts the user to select an amount of fuel to dispense by litres or rupees. If the selection does not exceed the balance, a motor is actuated to dispense the fuel. The remaining balance is then sent via text message to the user's mobile phone using GSM technology. Hardware requirements include a microcontroller, sensors, power supply, and actuators. The system aims to automate transactions and provide real-time updates to improve the customer experience at petrol bunks.

1. EMBEDDED SYSTEM MOBILE COMMUNICATION
PETROL BUNK AUTOMATION WITH PREPAID CARDS AND GSM
COMMUNICATION
ABSTRACT:
Automated have added to the new look of the petrol bunks. A drastic change which
has taken the city by storm is the petrol machines that have invoked a new look with
Automated systems invading this area also. Now one can get updated details on the mobile
using the cutting edge GSM TEchnology. This makes the customers know the exact quantity
of petrol that has to be filled in, getting over the perennial problem of forgoing small change
which most of the times the attendants at the bunks pocket for themselves. The traditional
archaic pumps have now been replaced by more advanced EMP Petrol Pumps for proper
filling of fuel. This not only ensures accuracy, but also saves a lot of time for customers and
avoids misconceptions and arguments. To demonstrate this as a project we have developed a
PIC Micro controller based Petrol bunk automation system.
EXISTING SYSTEM:
Previously, In Petrol Bunk we gave amount manually as per the quantity of fuel filled in
automobiles. Smoking at Petrol Bunk may leads to a Major accident. There is no sensor
availability for found out the smoking status.Infra red light reader facility is a must one but it
is not followed in existing method. Because of this reader we can easily found out the vehicle
which drop over at petrol bunk in night time.
PROPOSED SYSTEM:
Each vehicle is fitted with a prepaid card. When a car has arrived at the gate, the
RFID reader reads the card and opens the gate, only when the card is a valid card. Once
entered the user will be shown the balance amount available on the card and he must select a
option to dispense the fuel based on litres or rupees. The system should check whether the
user has entered a valid data i.e., the amount should not exceed the balance available in the

2. EMBEDDED SYSTEM MOBILE COMMUNICATION
card. After ensuring that, a motor is actuated to dispense the fuel. Once this is done, the
information such as available balance is sent to the user’s mobile phone using GSM
technology.
BLOK DIAGRAM:
TRANSMITTER SECTION:
Micro
Controller
Smoke
Sensor
Motor 1Relay
Power Supply Unit
Step down
Transformer
(230 to 12v AC)
Bridge
Rectifier
Filter
Circuit
Voltage
Regulator (IC
7805)
A
D
C
Infrared
Level Sensor
sensor
Relay Motor 2
Engine Switch
Keypad
LCD
display
TAG

3. EMBEDDED SYSTEM MOBILE COMMUNICATION
HARDWARE REQUIREMENTS
 Micro controller
 Infrared sensor
 Smoke sensor
 ADC
 Power supply
 Keypad
 Engine Switch
 Relay
 Motor
SOFTWARE REQUIREMENTS
 Embedded C
 mplab complier