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Rfid ( Radio Frequency Identification )

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INTRODUCTION

RFID (radio frequency identification) is a technology that was originally developed for use in transponders in aircrafts during the Second World War. RFID is an information and sensor technology that can be attached or inserted into objects to collect data through reader devices and tags. It uses wireless radio waves to transmit and uses devices such as RFID readers, RFID tags, and middleware. The RFID system consists of three components
1. The transponder, which is a small electronic data carrying tag that is attached to the product to be identified.
2. A reader that uses radio frequency signals to communicate with the tag
3. A data processing system that stores information about the tagged products.

RFID tags are …show more content…

RFID has also gained significant foothold in supply chain and manufacturing.

RFID IN WAREHOUSE MANAGEMENT

In the last decade RFID has gained popularity in the logistics and supply chain management fields. Many warehouses are taking into consideration the adoption of RFID to reduce the operating cost against the requirement to build an automatic warehouse and labour intensive manual checking. For warehousing the parameters include communication range, amount of transmittable data, communication time and speed of tag communication. The communication range is the distance within which the reader can transmit or receive data to the tag. Beyond this range the items become undetectable. The amount of data that is transmitted between the tag and reader affects the performance in terms of transmission time and accuracy. The communication time also impacts the performance of the RFID system. There is a choke point which is the fixed reader and the RFID is constrained to a maximum travel velocity when passing the fixed reader location. When travelling beyond this speed the accuracy to read is very close to zero. So when greater volume of data is passing the tag will have to essentially pass the reader more slowly for an accurate read, especially in warehouses.

In a warehouse four activities generally occur. In the first activity the receiving dock receives the shipments that arrive at from the factory. With the

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