08-16-2017, 09:30 PM
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Abstract:
Almost every product in the market has a barcode printed on it. Barcodes are machine-readable parallel bars that store binary information, revealing information about the product. Thus, it acts as the product fingerprint. As we go to the supermarket to [censored] things, the checkout person runs our selection over the scanner to scan the barcode, there s an audible beep, and we are told how much money we owe. But the days of barcode are numbered. The reason is that a technology called radiofrequency identification (RFID) is catching on. RFID tags are being used by corporations to track people and products in just about every industry ,The paper gives an overview of the current state of the art in the radio frequency identification (RFID = Radio Frequency Identification) technology. Aside from a brief introduction to the principles of the technology, a survey is given on major classes of RFID tags and readers, An ADC (Automated Data Collection) technology that: uses radio-frequency waves to transfer data between a reader and a movable item to identify, categorize, track..Is fast and does not require physical sight or contact between reader/scanner and the tagged item. Performs the operation using low cost components. Commonly used frequencies and identifier systems, current and envisaged fields of application, as well as advantages, concerns and limitations of use
Whats RFID?
T ags can be attached to almost anything: Items, cases or pallets of products, high value goods vehicles, assets, livestock or personnel Passive Tags Do not require power Draws from Interrogator Field Lower storage capacities (few bits to 1 KB) Shorter read ranges (4 inches to 15 feet) Usually Write-Once-Read-Many/Read-Only tags Cost around 25 cents to few dollars Active Tags Battery powered Higher storage capacities (512 KB) Longer read range (300 feet) Typically can be re-written by RF Interrogators Cost around 50 to 250 dollars