Applications of Rfid

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Radio Frequency Identification (RFID) is the next generation wireless communication technology applicable to a wide range of application areas. There are increasing number of applications in various fields such as medical, manufacturing and automotive industry. In this paper, we are going to explore the RFID usage in the aforementioned areas, as well as their implementations, challenges and opportunities.

Introduction

Radio Frequency Identification (RFID) is a form of automatic identification technology (auto ID). Auto ID is characterized by data forms that are machine readable. Other types of Auto ID include bar codes, magnetic stripes, optical character recognition, electronic article surveillance (EAS) security tags, optical character group (OCG) and others [1].

RFID uses radio waves to store and retrieve data from an identification chip. A RFID system consists of three key components as shown in Fig. 1: RFID tag or transponder, reader/writer, and the application computer or processor. An RFID tag consists of a microchip and an antenna [2]. Each tag has a unique E-coding which identifies target object. The RFID reader/writer requests or alters information contained in a tag by sending an RF signal to it. The application computer or processor performs information processing, data storage and interaction with.

Fig.1 : Main components of RFID

Many types of RFID exist, but at the highest level, we can divide RFID devices into two classes: active and passive. Active tags require a power source—they’re either connected to a powered infrastructure or use energy stored in an integrated battery. In the latter case, a tag’s lifetime is limited by the stored energy, balanced against the number of read operations the device must undergo.

RFID technology has a lot of advantages, such as simultaneous collection of large quantities of data with high accuracy, contactless, etc. RFID technology has an increasing influence to our lives and gradually...