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| PASSIVE TAGS INFORMATION | ||||
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RFID
does not depend on orientation or line-of-sight and may be read through
cartons. In addition, RFID can identify multiple articles simultaneously.
The RFID tag may be read-only or read/write. Read-only tags are historically less expensive than read/write tags. The RFID tag read/write distances vary depending on tag and antenna size, design and operating frequency. Depending on the tag construction, an RFID system can operate in harsh industrial or commercial environments with operating temperatures in the range of –25C to +85 C. Passive tags have no internal power source. The minute electrical current induced in the antenna by the radio frequency signal generated when a Reader/Writer is in close proximity provides just enough power for the CMOS integrated circuit in the tag to power up and transmit a response. The tags chip can contain nonvolatile EEPROM for storing data. Passive tags typically operate at 13.56 MHz although Vickerman Associates Asset Management markets the Omron V700 tag at 125 MHZ also. This tag is specifically designed for application on metal objects |
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Vickerman Associates Asset Management |
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