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    Method and apparatus for providing information from a speed and direction sensor
    17.
    发明授权
    Method and apparatus for providing information from a speed and direction sensor 有权
    用于从速度和方向传感器提供信息的方法和装置

    公开(公告)号：US07026808B2

    公开(公告)日：2006-04-11

    申请号：US10948808

    申请日：2004-09-23

    申请人： Ravi Vig ,  Jay M. Towne ,  Glenn Forrest

    发明人： Ravi Vig ,  Jay M. Towne ,  Glenn Forrest

    IPC分类号： G01P3/66 ,  G01B7/14

    CPC分类号： G01D5/24457 ,  G01D5/145 ,  G01P3/488 ,  H03K5/082

    摘要： A method and apparatus for providing information from a speed and direction sensor is disclosed. The method and apparatus detect the presence of a ferromagnetic object as it moves past a sensor. The sensor determines speed and direction information regarding the ferromagnetic object, and further provides information relating to the environment surrounding the sensor or object, such as the status of an air gap between the sensor and the moving object, and the temperature of the environment in which the sensor or object is disposed.

    摘要翻译： 公开了一种从速度和方向传感器提供信息的方法和装置。 该方法和装置在铁磁物体移动经过传感器时检测其存在。 传感器确定关于铁磁物体的速度和方向信息，并且还提供与传感器或物体周围的环境有关的信息，例如传感器和移动物体之间的气隙的状态，以及环境的温度，其中 设置传感器或物体。

    Detection of passing magnetic articles with a peak referenced threshold detector
    18.
    发明授权
    Detection of passing magnetic articles with a peak referenced threshold detector 有权
    用峰值参考阈值检测器检测通过磁性物品

    公开(公告)号：US6091239A

    公开(公告)日：2000-07-18

    申请号：US387683

    申请日：1999-08-31

    申请人： Ravi Vig ,  Jay M. Towne ,  Kristann L. Moody ,  Teri L. Tu

    发明人： Ravi Vig ,  Jay M. Towne ,  Kristann L. Moody ,  Teri L. Tu

    IPC分类号： F02P17/02 ,  G01B7/14 ,  G01B7/30 ,  G01P3/48 ,  G01P3/489 ,  H03G1/00

    CPC分类号： H03K5/082 ,  G01R33/0041 ,  H03G3/001 ,  H03K17/9517 ,  H03K5/153

    摘要： A detector for detecting passing magnetic articles including a magnetic-field-to-voltage transducer having an output at which an analog voltage Vsig is generated, with the Vsig voltage being commensurate to the strength of the ambient magnetic field and having at least one peak. An analog-to-digital converter coupled to the output of the transducer is operative to convert to a corresponding digital signal at least a portion of the Vsig voltage, which portion includes the peak and a circuit coupled to the analog-to-digital converter is operative to generate an output signal indicative of the occurrence of the times t.sub.xpk when the difference between Vsig and said peak of Vsig has exceeded a predetermined amount.

    摘要翻译： 一种用于检测通过的磁性制品的检测器，包括具有产生模拟电压Vsig的输出的磁场 - 电压换能器，其中Vsig电压与环境磁场的强度相当并具有至少一个峰值。 耦合到换能器的输出的模数转换器可操作以将Vsig电压的至少一部分转换成对应的数字信号，该部分包括峰值，并且耦合到模数转换器的电路是 用于当Vsig与所述Vsig的峰值之间的差超过预定量时，产生指示时刻txpk的出现的输出信号。

    Tracking and holding in a DAC the peaks in the field-proportional voltage in a slope activated magnetic field sensor
    19.
    发明授权
    Tracking and holding in a DAC the peaks in the field-proportional voltage in a slope activated magnetic field sensor 失效
    在DAC中跟踪并保持斜率激励的磁场传感器中的场成比例电压中的峰值

    公开(公告)号：US5729130A

    公开(公告)日：1998-03-17

    申请号：US587405

    申请日：1996-01-17

    申请人： Kristann L. Moody ,  Ravi Vig ,  Jay M. Towne ,  Teri L. Tu

    发明人： Kristann L. Moody ,  Ravi Vig ,  Jay M. Towne ,  Teri L. Tu

    IPC分类号： G01B7/00 ,  G01D5/14 ,  G01D5/244 ,  G01D5/245 ,  G01V3/08 ,  H03K17/95 ,  G01B7/14 ,  G01N27/72 ,  G01R33/00

    CPC分类号： H03K17/9517 ,  G01D5/145

    摘要： In a proximity-detector, a Hall transducer produces a signal Vsig. Two counters, P-counter and N-counter count pulses from a clock and produce count signals respectively to two DACs, PDAC and NDAC. The DACs output signals track and hold, respectively, the positive pulses and negative pulses in Vsig. These output signals are compared with Vsig to produce a proximity-detector binary output voltage Vout that becomes high when a tracking voltage V.sub.DAC-P produced by PDAC rises to each peak positive voltage V.sub.pk in Vsig, and that becomes low when a tracking voltage V.sub.DAC-P falls to each peak negative voltage in Vsig. The peak V.sub.DAC-P is held until Vsig drops by a fixed amount below V.sub.pk to produce an output pulse that resets the counter connected to PDAC at a time shortly following the actual peak in Vsig. Similarly, the peak V.sub.DAC-N is held until Vsig rises a fixed amount above V.sub.DAC-N to produce an output pulse that resets the counter connected to NDAC. The N-counter is reset at t.sub.npk by the negative-peak indicating signal V.sub.Ncomp and is enabled at t.sub.ppk by the positive-peak indicating signal V.sub.Pcomp, while the P-counter reset by the positive peak indicating signal V.sub.Pcomp and enabled by V.sub.Ncomp. This proximity detector detects articles passing at rates down to zero.

    摘要翻译： 在接近检测器中，霍尔传感器产生信号Vsig。 两个计数器，来自时钟的P计数器和N计数器计数脉冲，并分别产生计数信号到两个DAC，PDAC和NDAC。 DACs输出信号分别跟踪和保持Vsig中的正脉冲和负脉冲。 将这些输出信号与Vsig进行比较，以产生当由PDAC产生的跟踪电压VDAC-P上升到Vsig中的每个峰值正电压Vpk时变为高的接近检测器二进制输出电压Vout，并且当跟踪电压VDAC- P降至Vsig中的每个峰值负电压。 峰值VDAC-P保持直到Vsig下降到低于Vpk的固定量，以产生输出脉冲，该脉冲在与Vsig实际峰值之后不久的时间重置连接到PDAC的计数器。 类似地，保持峰值VDAC-N直到Vsig上升到高于VDAC-N的固定量以产生输出脉冲，其复位与NDAC连接的计数器。 N计数器在tnpk处由负峰指示信号VNcomp复位，并在tppk由正峰指示信号VPcomp使能，而P计数器由正峰值指示信号VPcomp复位并由VNcomp使能。 该接近检测器检测以低至零的速率通过的物品。

    Contactless magnet-activated proportional controller
    20.
    发明授权
    Contactless magnet-activated proportional controller 失效
    非接触式磁铁比例控制器

    公开(公告)号：US5264783A

    公开(公告)日：1993-11-23

    申请号：US823094

    申请日：1992-01-21

    申请人： Ravi Vig ,  Mark C. Hopkins ,  Jay M. Towne

    发明人： Ravi Vig ,  Mark C. Hopkins ,  Jay M. Towne

    IPC分类号： G05F1/635 ,  H03K17/90

    CPC分类号： G05F1/635

    摘要： An electrical power controller includes an integrated circuit having a Hall element, a Hall voltage amplifier, a ramp signal generator, and a voltage comparator. The output of the ramp generator is connected to one input of the voltage comparator and the output of the Hall voltage amplifier is connected to the outer comparator input. During intervals when the amplified Hall voltage exceeds the ramp voltage, the output of the comparator changes from one binary state to the other such that a stream of pulses is generated at the output of the comparator. Thus as a magnetic field at the Hall element increases, the Hall voltage increases and the width of each pulse in the stream of pulses grows proportionally. Mechanical means is provided for manually moving and guiding the pole of a magnet along a path toward the integrated circuit. Constructions of such controllers adapted for use as lamp dimmers and DC motor speed controllers are described.

    摘要翻译： 电力控制器包括具有霍尔元件，霍尔电压放大器，斜坡信号发生器和电压比较器的集成电路。 斜坡发生器的输出连接到电压比较器的一个输入端，霍尔电压放大器的输出端连接到外部比较器输入。 在放大的霍尔电压超过斜坡电压的间隔期间，比较器的输出从一个二进制状态变为另一个，使得在比较器的输出端产生脉冲流。 因此，当霍尔元件的磁场增加时，霍尔电压增加，并且脉冲流中的每个脉冲的宽度成比例地增长。 提供了用于沿着朝向集成电路的路径手动地移动和引导磁体的磁极的机械装置。 描述适用于灯调光器和直流电动机速度控制器的这种控制器的结构。