公开(公告)号：US08890684B2

公开(公告)日：2014-11-18

申请号：US13162746

申请日：2011-06-17

申请人： Artem Tkachenko ,  Petya Vachranukuniet

发明人： Artem Tkachenko ,  Petya Vachranukuniet

IPC分类号： G01S13/87 ,  G06K7/10 ,  G06Q10/08 ,  G01S5/14 ,  G01S13/56 ,  G01S13/58 ,  G01S11/10 ,  G01S13/92 ,  G08B13/24

CPC分类号： G06K7/10425 ,  G01S5/14 ,  G01S11/06 ,  G01S11/10 ,  G01S13/003 ,  G01S13/56 ,  G01S13/58 ,  G01S13/876 ,  G01S13/878 ,  G01S13/92 ,  G06Q10/08 ,  G08B13/248

摘要： An RFD reader includes a transceiver configured to receive a first radio frequency signal reflected off at least one surface to provide baseline signal information and a second radio frequency signal reflected off the at least one surface and an object to provide further signal information. A comparator is configured to compare the baseline signal information and the further signal information to provide a signal comparison. A processor is configured to detect the presence of the object in accordance with the signal comparison. A determination is made whether the object is in motion in accordance with the signal comparison. The determination whether the object is in motion is made in accordance with a continuous fluctuation of the second radio frequency signal. A determination whether the object is no longer in motion is made in accordance with an ending of the continuous fluctuation of the second radio frequency signal.

摘要翻译： RFD读取器包括：收发器，被配置为接收从至少一个表面反射的第一射频信号，以提供基线信号信息;以及从该至少一个表面反射的第二射频信号和一个对象，以提供另外的信号信息。 比较器被配置为比较基线信号信息和另外的信号信息以提供信号比较。 处理器被配置为根据信号比较来检测对象的存在。 根据信号比较确定对象是否在运动中。 根据第二射频信号的连续波动来确定物体是否运动。 根据第二射频信号的连续波动的结束，确定对象是否不再运动。