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    • 3. 发明申请
    • METHOD AND SYSTEMS FOR LOCALIZING OBJECTS USING PASSIVE RFID TAGs
    • 使用无源RFID标签定位对象的方法和系统
    • WO2007131839A1
    • 2007-11-22
    • PCT/EP2007/053334
    • 2007-04-04
    • INTERNATIONAL BUSINESS MACHINES CORPORATIONCompagnie IBM FranceBAUCHOT, FredericCLEMENT, Jean-YvesMARMIGERE, GerardPICON, Joaquin
    • BAUCHOT, FredericCLEMENT, Jean-YvesMARMIGERE, GerardPICON, Joaquin
    • G06K7/00G06K7/10G06K17/00G06K7/08
    • G06K7/10346G06K7/0008G06K7/10079G06K7/10336G06K7/10861G06K17/00G06K2017/0074
    • A system for localizing an object among a set of objects, each equipped with a passive RFID tag, is disclosed. According to the invention, the RFID reader comprises a plurality of antennas that can be activated sequentially. After having selected an antenna, the RFID reader powers the selected antenna and interrogates the RFID tags localized in the reading range of the selected antenna. If the RFID tag having the searched identifier is not detected within the reading range of the selected antenna, the powering of the selected antenna is stopped, the selected antenna is deselected, a different antenna is selected, and the process is repeated with the new selected antenna. If the RFID tag having the searched identifier is detected within the reading range of the selected antenna, the powering of the selected antenna is maintained for a predetermined delay and visual means indicating the position of the RFID tag having the searched identifier are activated. In a first embodiment, the visual indication means consist of LEDs embedded within the passive RFID tag. Other visual indication means can be associated to the RFID reader's antennas.
    • 公开了一种用于在一组物体中定位物体的系统,每个物体配备有无源RFID标签。 根据本发明,RFID读取器包括可以顺序激活的多个天线。 在选择天线之后,RFID读取器为选定的天线供电并询问定位在所选天线的读取范围内的RFID标签。 如果在所选择的天线的读取范围内没有检测到具有搜索到的标识符的RFID标签,则停止所选天线的供电,取消选择的天线,选择不同的天线,并且使用新的选择重复该过程 天线。 如果在所选择的天线的读取范围内检测到具有搜索到的标识符的RFID标签,则将所选天线的供电保持预定的延迟,并且激活指示具有搜索到的标识符的RFID标签的位置的视觉装置。 在第一实施例中,视觉指示装置由嵌入无源RFID标签内的LED组成。 其他视觉指示装置可以与RFID读取器的天线相关联。