ByTalvinder singh(04013202810)

Synopsis

RFID VOTING SYSTEM WITHAUTOMATIC AUTHENTICATION

• Many secure systems, such as contactless credit cards and secure entrance systems are built with contactless smartcard RFID technologies.

• This project includes Low Frequency RFID Reader and transmitter working

at 434 MHz frequency to fetch the information from the user to process it through microcontroller. Then microcontroller takes the decision whether to cast the vote of a particular user or not.

• The RFID tag is used to authenticate the voter for voting in the election. The voter can vote only once after that the tag will be disabled for further voting in the same election. It is a much secured way of voting in democratic countries like India.

Background of Problem

• The main aim of the project i.e. RFID VOTING SYSTEM is to provide more security in authentication of a candidate contesting in elections by providing a unique identity to every user using the RFID TECHNOLOGY

• Each and every user uses his RFID for casting his vote in the procedure of electing his choice of candidate from the list of candidates contesting in the elections. This is purely to eradicate rigging which will be helpful to elect the genuine candidates on the basis of number of votes polled to them.

Purpose of this project

• 1. Legislative Assembly Elections.• 2. Student union Elections.• 3. Labor union Elections in factories, and many

other elections

Applications

• Here is the basic block diagram of the project telling about the basic working of the system. Card is the user identity equipped with radio frequency transmitter; the transmitted sequence is then sent and received by the receiver circuit which is in the reader module.

• The reader decodes the identity and sent towards the controller, here the controller check in the database for authenticity of the user identity and if identified then allows the user to cast the vote otherwise displays an error message “illegal user”. If any user tries to cast vote again it will display “already voted” and disables the voting circuitry.

Basic idea of project

For Authentication

The working of this project can be divided into 3 parts with sequence of their work

• Transmitter Module (Voter Identity card)• Receiver module • Controller and Balloting unit

WORKING

• This radio frequency (RF) transmission system employs Amplitude Shift Keying (ASK) with transmitter/receiver (Tx/Rx) pair operating at 434 MHz The transmitter module takes serial input and transmits these signals through RF. The transmitted signals are received by the receiver module.

Transmitter module(Voter identity card)

• The receiver, upon receiving these signals, sends them to the decoder IC (HT12D) through pin2. The serial data is received at the data pin (DIN, pin14) of HT12D. The decoder then retrieves the original parallel format from the received serial data

.

Receiver Module

• When no signal is received at data pin of HT12D, it remains in standby mode and consumes very less current (less than 1μA) for a voltage of 5V. When signal is received by receiver, it is given to DIN pin (pin14) of HT12D. On reception of signal, oscillator of HT12D gets activated. IC HT12D then decodes the serial data and checks the address bits. If these bits match with the local address pins (pins 1-8) of HT12D, then it puts the data bits on its data pins (pins 10-13) and makes the VT pin high. An LED is connected to VT pin (pin17) of the decoder. This LED works as an indicator to indicate a valid transmission. The corresponding output is thus generated at the data pins of decoder IC. A signal is sent by lowering any or all the pins 10-13 of HT12E and corresponding signal is received at receiver’s end (at HT12D). Address bits are configured by using the by using the first 8 pins of both encoder and decoder ICs. To send a particular signal, address bits must be same at encoder and decoder ICs. By configuring the address bits properly, a single RF transmitter can also be used to control different RF receivers of same frequency.

• This unit consists of a microcontroller as control unit and some switches as balloting unit. The function of the control unit is to receive the decoded sequence from the receiver unit and check for authenticity of the voter by comparing with the existing database at the controller flash memory.

Controlling & Balloting Unit

• Now if the voter is authorized it enables the Balloting unit to cast the vote, and displays the name of candidates at the display device and if the user is not authorized it displays a message “Illegal user” at the screen and disables the balloting unit.

• Once the voter had casted his vote and tries to cast again with same identity it shows a message saying “Already Voted”.

• The balloting unit consists of some push-button switches to cast the vote with names/signs of the candidates.

• We accept that our next generation will develop this RFID VOTING SYSTEM with more secure, easily adaptable and less power consumption.

• The RF ID cards can be miniaturized by using NANO SMT which will not need any power source for ID cards.

• Database can be increased by using peripheral memory device, system provides flexibility.

• No of candidates can be increased by increasing I/O ports of the controller.

Future Scope

THANK YOU