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公开(公告)号：US09459343B2
公开(公告)日：2016-10-04
申请号：US14870150
申请日：2015-09-30
申请人： INTERMEC IP CORP.
发明人： Pavel Nikitin , Kvs Rao , Rainer Brueckmann , Hunter Leland , Stephen Kelly
CPC分类号： G01S13/74 , G01S5/02 , G01S5/0257 , G01S5/0284 , G01S5/06 , G01S5/12
摘要： A system for determining a bearing or location of a radio frequency identification (RFID) tag using a handheld RFID reader is described. In one embodiment, the reader is equipped with an accelerometer. A user moves the reader while the reader receives the tag's signal and determines the tag signal's phase at multiple locations. The locations of the reader antenna can be reconstructed using the accelerometer data. By using the phase determined at multiple locations in conjunction with the location of the reader antenna, the reader can determine the bearing of the tag. For an RFID reader not equipped with an accelerometer, the sign and ratio of the rate of change in the phase of a tag's signal to the distance traveled by the reader antenna can be used to determine the location of the tag relative to the reader.
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公开(公告)号：US09176215B2
公开(公告)日：2015-11-03
申请号：US13826758
申请日：2013-03-14
申请人： Intermec IP Corp.
发明人： Pavel Nikitin , KVS Rao , Rainer Brueckmann , Hunter Leland , Stephen Kelly
CPC分类号： G01S13/74 , G01S5/02 , G01S5/0257 , G01S5/0284 , G01S5/06 , G01S5/12
摘要： A system for determining a bearing or location of a radio frequency identification (RFID) tag using a handheld RFID reader is described. In one embodiment, the reader is equipped with an accelerometer. A user moves the reader while the reader receives the tag's signal and determines the tag signal's phase at multiple locations. The locations of the reader antenna can be reconstructed using the accelerometer data. By using the phase determined at multiple locations in conjunction with the location of the reader antenna, the reader can determine the bearing of the tag. For an RFID reader not equipped with an accelerometer, the sign and ratio of the rate of change in the phase of a tag's signal to the distance traveled by the reader antenna can be used to determine the location of the tag relative to the reader.
摘要翻译： 描述了使用手持式RFID读取器确定射频识别（RFID）标签的方位或位置的系统。 在一个实施例中，读取器配备有加速度计。 用户在阅读器接收到标签的信号并在多个位置确定标签信号的相位时移动阅读器。 可以使用加速度计数据来重构读取器天线的位置。 通过结合读取器天线的位置使用在多个位置确定的相位，读取器可以确定标签的方位。 对于不配备加速度计的RFID读取器，标签信号的相位变化率与读取器天线行进的距离的符号和比率可用于确定标签相对于读取器的位置。
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公开(公告)号：US09835722B2
公开(公告)日：2017-12-05
申请号：US15246678
申请日：2016-08-25
申请人： INTERMEC IP CORP.
发明人： Pavel Nikitin , Kvs Rao , Rainer Brueckmann , Hunter Leland , Stephen Kelly
CPC分类号： G01S13/74 , G01S5/02 , G01S5/0257 , G01S5/0284 , G01S5/06 , G01S5/12
摘要： A system for determining a bearing or location of a radio frequency identification (RFID) tag using a handheld RFID reader is described. In one embodiment, the reader is equipped with an accelerometer. A user moves the reader while the reader receives the tag's signal and determines the tag signal's phase at multiple locations. The locations of the reader antenna can be reconstructed using the accelerometer data. By using the phase determined at multiple locations in conjunction with the location of the reader antenna, the reader can determine the bearing of the tag. For an RFID reader not equipped with an accelerometer, the sign and ratio of the rate of change in the phase of a tag's signal to the distance traveled by the reader antenna can be used to determine the location of the tag relative to the reader.
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公开(公告)号：US20130249736A1
公开(公告)日：2013-09-26
申请号：US13826758
申请日：2013-03-14
申请人： INTERMEC IP CORP.
发明人： Pavel Nikitin , KVS Rao , Rainer Brueckmann , Hunter Leland , Stephen Kelly
IPC分类号： G01S5/02
CPC分类号： G01S13/74 , G01S5/02 , G01S5/0257 , G01S5/0284 , G01S5/06 , G01S5/12
摘要： A system for determining a bearing or location of a radio frequency identification (RFID) tag using a handheld RFID reader is described. In one embodiment, the reader is equipped with an accelerometer. A user moves the reader while the reader receives the tag's signal and determines the tag signal's phase at multiple locations. The locations of the reader antenna can be reconstructed using the accelerometer data. By using the phase determined at multiple locations in conjunction with the location of the reader antenna, the reader can determine the bearing of the tag. For an RFID reader not equipped with an accelerometer, the sign and ratio of the rate of change in the phase of a tag's signal to the distance traveled by the reader antenna can be used to determine the location of the tag relative to the reader.
摘要翻译： 描述了使用手持式RFID读取器确定射频识别（RFID）标签的方位或位置的系统。 在一个实施例中，读取器配备有加速度计。 用户在阅读器接收到标签的信号并在多个位置确定标签信号的相位时移动阅读器。 可以使用加速度计数据来重构读取器天线的位置。 通过结合读取器天线的位置使用在多个位置确定的相位，读取器可以确定标签的方位。 对于不配备加速度计的RFID读取器，标签信号的相位变化率与读取器天线行进的距离的符号和比率可用于确定标签相对于读取器的位置。
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