| 摘要 |
Disclosed are embodiments of methods, systems, and apparatus for singulating wireless tags. In one embodiment, a power ramping method is provided for tag singulation. This embodiment involves activating a control of an RFID reader for engaging power to begin reading RFID tags. The first reading is taken at a relatively low transmitting power level. If an RFID tag is not detected at the first power level, the power from the RFID reader is increased to a second higher power level. Increasing the transmitting power may be repeated until there is a final read volume where a single RFID tag, or a select number of such tags, is detected. Certain embodiments may provide for ramping the power down as well as up, so that if multiple tags are detected and only the closest tag is desired to be detected, tags can be excluded systematically from the read volume until only a single tag remains.
|
