Abstract
In the present era the technology is growing rapidly therefore it is necessary to adopt those methods in designing a system that are simpler and effective. The main concern is to design RFID system to secure entry points in an office environment. In this paper the work mainly specifies the design of RFID reader and antenna. The noncontact device of RFID system is more convenient approach instead of conventional bar code. Every RFID card (passive) is allocated with a different binary number for identification. The modulation technique used here is Frequency shift keying. The detectable operating frequency of RFID reader is 123.2khz for bit '1' and 134.2khz for bit '0'. To achieve the required frequency TMS 3705 IC has been used and it's interfacing with an antenna of 0.18mm enamelled copper wire with 102 turns. The other part of the interface in the IC is binary bits verification with microcontroller. The microcontroller is further controlling the relay operation and also serially maintaining the record of employee's arrival through Microsoft visual studio. Presently the application in which its significance is observed and implemented is calculating payroll, storage unit of defence artillery.
Highlights
The growth in the telecom industry is changing and playing very important role in efficiency and speed of electronic circuits
The pattern of Electromagnetic waves radiating is generated through continuous oscillations of electromagnetic fields passing through a medium such as air travelling from one point to other
The Radio Frequency Identification (RFID) reader generates a carrier signal of 134.2 KHz, once it senses that the card is in the antenna range
Summary
The growth in the telecom industry is changing and playing very important role in efficiency and speed of electronic circuits. Main component of RFID reader are antenna, smart filters, modulating unit, demodulating unit, coupling device and a processing unit. Main component of RFID reader are antenna, modulating unit, demodulating unit, memory unit. The automatic reading capability of RFID tag from a distance away and no compulsion of setting and adjusting its position make it as unique and user friendly electronic device that makes human lives easier and smarter. This project is designed such as to cover a small working area for verifying (attendance) of concern persons and securing environment. To achieve precision and accuracy efforts has been made
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