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| Contact |
| T:(86)21 3921 5467 |
| F:(86)21 3921 5469 |
| E-Mail:Sales@tsprfid.com |
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| RFID FAQ |
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| 1. |
What is RFID? |
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What is passive RFID tag? |
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What is the difference between low-, high-, and ultra-high frequencies? |
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What are the advantages of RFID? |
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| 1. |
What is RFID? |
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Radio frequency identification (RFID), is a generic term for technologies that use radio waves to automatically identify people or objects. It commonly works with a compute information system as advanced means to control or manage terminal articles or people.
RFID is composed of microchip and antenna with various encapsulations to adapt different environment in application. The antenna enables the chip to communicate with the identification information to a reader in air by contactless digital information transfer. For long lifespan and low cost thinking, most of RFID product in common use are passive RFID, it means no battery enclosed in, and it get the power from corresponding frequency wave energy of reader.
RFID is a new technique emerging to business application with 10ten year. We have great confidence from these years experience and progress with process of innovation which rapidly accumulated. Nevertheless, the advent of high-performance, facile, low-cost, RFID technology is absolutely central to the ability to conduct information warfare and information operations today. |
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| 2. |
What is passive RFID tag |
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A passive tag is an RFID tag that does not contain a battery; the power is supplied by the reader. When radio waves from the reader are encountered by a passive rfid tag, the coiled antenna within the tag forms a magnetic field. The tag draws power from it, energizing the circuits in the tag. The tag then sends the information encoded in the tag's memory. The advantages of a passive RFID tag are:
The tag functions without a battery; these tags have a useful life of twenty years or more.
The tag is typically much less expensive to manufacture
The tag is much smaller (some tags are the size of a grain of rice). These tags have almost unlimited applications in consumer goods and other areas. The major disadvantages of a passive rfid tag are: The tag can be read only at very short distances, typically a few feet at most. This greatly limits the device for certain applications. It may not be possible to include sensors that can use electricity for power. The tag remains readable for a very long time, even after the product to which the tag is attached has been sold and is no longer being tracked. |
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What is the difference between low-, high-, and ultra-high frequencies |
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Just as your radio tunes in to different frequencies to hear different channels, RFID tags and readers have to be tuned to the same frequency to communicate. RFID systems use many different frequencies, but generally the most common are low-frequency (around 125 KHz), high-frequency (13.56 MHz) and ultra-high-frequency or UHF (860-960 MHz). Microwave (2.45 GHz) is also used in some applications. Radio waves behave differently at different frequencies, so you have to choose the right frequency for the right application |
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| 4. |
What are the advantages of RFID? |
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RFID creates an automatic way to collect information about a product, place, time or transaction quickly, easily and without human error. It provides a non-contact data link, without need for line of sight, for example articles inside a cardboard box, or concerns about harsh or dirty environments that restrict other auto ID technologies such as bar codes. In addition, RFID is more than just an ID code, it can be used as a data carrier, with information being written and updated to the tag on the fly. Genesis has the programming ability to install RFID readers and tags into your material handling system and integrate them with your PC or PLC network. Implementation of RFID will allow the improvement of data quality, items management, asset visibility, and maintenance of materiel. Further, the use of RFID in the supply chain has the potential to provide real benefits in inventory management, asset visibility, and interoperability in an end-to-end integrated environment. RFID encapsulates the data accuracy advantages inherent in all types of automatic identification technology. Additionally, RFID is a totally non-intrusive methodology for data capture (requires no human intervention), is non-line of sight technology, and is a technology that may possess both read and write options within the same equipment item.
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