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    • 1. 发明授权
    • Reader system for waste bin pickup vehicles
    • 垃圾捡拾车读卡器系统
    • US5565846A
    • 1996-10-15
    • US312199
    • 1994-09-26
    • Theodore D. GeiszlerNoel H. EberhardtRussel E. WalkerHerbert P. Radding
    • Theodore D. GeiszlerNoel H. EberhardtRussel E. WalkerHerbert P. Radding
    • B65F1/14B65F3/02G06K7/08G08G13/14
    • G06K7/10178B65F1/1484G06K7/10336B65F2003/023B65F2210/124
    • A reader for radio frequency identification tags having at least one magnetic field transmitting and receiving coil which is oriented in a given plane and which is responsive to a received magnetic exciter field of a first frequency to produce and radiate an identifying magnetic field comprised of a carrier at a second different frequency modulated by an identifying code. The reader comprises a first circuit for producing a radio frequency signal of the first frequency; a first magnetic field coupling arrangement connected to the output of said first circuit for producing a corresponding exciter field at the first frequency to be magnetically coupled to the receiving coil of the tag, with the first magnetic field coupling arrangement including a solenoidal exciter coil having at least one wound exciter winding and a longitudinal axis disposed substantially perpendicular to the plane of the tag coil; a second magnetic field coupling arrangement for receiving a magnetic field of the second frequency produced by the tag and providing a corresponding electrical signal, with the second magnetic field coupling arrangement including at least one receiver coil disposed adjacent one end of the solenoidal coil; and circuitry connected to the receiver coil for decoding the received electrical signal. Preferably the tag is disposed on the lid of a trash or waste bin with the tag coil being substantially horizontal and the axis of the exciter coil is disposed substantially vertically.
    • 一种用于射频识别标签的读取器,其具有至少一个磁场发射和接收线圈,该磁场发射和接收线圈定向在给定平面中,并且响应于接收到的第一频率的磁激励器场来产生和辐射包括载体的识别磁场 在由识别码调制的第二不同频率处。 读取器包括用于产生第一频率的射频信号的第一电路; 第一磁场耦合装置,其连接到所述第一电路的输出端,用于产生第一频率的相应的激励器场,以磁性耦合到标签的接收线圈,第一磁场耦合装置包括一个螺线管励磁线圈, 至少一个绕线激励器绕组和基本上垂直于所述标签线圈的平面设置的纵向轴线; 第二磁场耦合装置,用于接收由标签产生的第二频率的磁场并提供对应的电信号,第二磁场耦合装置包括邻近螺线管线圈的一端设置的至少一个接收器线圈; 以及连接到接收器线圈的电路,用于对所接收的电信号进行解码。 优选地,标签设置在垃圾箱或垃圾箱的盖上,标签线圈基本上是水平的,并且激励器线圈的轴线基本垂直地设置。