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    Non-contact system for sensing and signalling by externally induced intra-body currents
    1.
    发明授权
    Non-contact system for sensing and signalling by externally induced intra-body currents 失效
    用于通过外部诱发的体内电流感测和信令的非接触式系统

    公开(公告)号：US5914701A

    公开(公告)日：1999-06-22

    申请号：US907062

    申请日：1997-08-06

    Applicant: Neil Gersheneld ,  Thomas Zimmerman ,  David Allport

    Inventor： Neil Gersheneld ,  Thomas Zimmerman ,  David Allport

    IPC: G06F3/01 ,  G06F3/033 ,  G06F3/044 ,  G06K7/08 ,  G06K19/04 ,  G06K19/077 ,  H04B5/00 ,  H04B13/00 ,  G09G5/00

    CPC classification number: G06F3/017 ,  G06F3/0346 ,  G06F3/044 ,  G06K19/041 ,  G06K19/07749 ,  G06K19/07758 ,  G06K19/07788 ,  G06K7/10326 ,  H04B13/005 ,  H04B5/0012 ,  H04B5/02 ,  H04B5/04 ,  G06F3/046

    Abstract: A wireless system includes one or more transmitters and one or more remote receivers that are respectively coupled through one or more users and room ground. The transmitters each produce low-frequency, low power signals that, through capacitive coupling, pass as displacement currents into and from the body of the user, which acts as a conductive node. A receiver that couples capacitively to the user responds to the displacement currents and reproduces the signals. The transmitter includes a signal generator and a pair of electrodes. The signal generator produces modulated signals that vary the voltage between the electrodes, a first one of which is closely coupled capacitively to the user's body such that the "quasi-electrostatic" field resulting from the electrode potential causes a displacement current to pass to the user's body. The second electrode is oriented so that its coupling to the room ground is stronger than that of the first electrode, such that room ground acts as a return path for the current from the receiver. The signal generator may modulate the information to be transmitted using, for example, a pseudorandom code, to produce spread spectrum signals. This increases noise immunity and allows multiple transmitters, each using a different modulation code, to operate at the same time. The receivers each include a detector/demodulator that acquires and tracks the signals from the one or more transmitters.

    Abstract translation: 无线系统包括分别通过一个或多个用户和房间地面耦合的一个或多个发射机和一个或多个远程接收机。 发射机每个产生低频，低功率信号，通过电容耦合，作为位移电流通过用户的身体传导，用作导电节点。 将电容耦合到用户的接收器响应于位移电流并再现信号。 发射机包括信号发生器和一对电极。 信号发生器产生调制信号，其调节电极之间的电压，其中的第一个电极与用户的身体电容密切耦合，使得由电极电位产生的“准静电”场导致位移电流传递到用户的 身体。 第二电极被定向成使得其与室内接地的耦合比第一电极的耦合更强，使得房间地面用作来自接收器的电流的返回路径。 信号发生器可以使用例如伪随机码来调制要发送的信息，以产生扩频信号。 这增加了噪声抗扰度，并且允许多个发射机，每个使用不同调制码的发射机同时操作。 接收机各自包括检测器/解调器，其获取并跟踪来自一个或多个发射机的信号。

    Diagnostic system
    2.
    发明授权
    Diagnostic system 失效
    诊断系统

    公开(公告)号：US5808919A

    公开(公告)日：1998-09-15

    申请号：US551054

    申请日：1995-10-31

    Applicant: Christopher William Preist ,  David Allport

    Inventor： Christopher William Preist ,  David Allport

    IPC: G01R31/00 ,  G01R31/319 ,  G05B19/048

    CPC classification number: G01R31/00 ,  G06F11/2205 ,  G01R31/31912

    Abstract: A diagnostic system (10) for diagnosing the cause of failures of functional tests made on a system under test wherein the system under test comprises a plurality of interacting components and wherein the diagnostic system (10) comprises means (20) for interpreting test results based on the set of operations which are involved in carrying out the tests and which components are exercised by operations.

    Abstract translation: 一种用于诊断在被测系统上进行的功能测试的故障原因的诊断系统（10），其中所述被测试系统包括多个相互作用组件，并且其中所述诊断系统（10）包括用于解释基于测试结果的装置（20） 关于进行试验的一系列作业，哪些部分由作业行使。

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