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21. 发明申请

US20140145711A1 CIRCUITS AND METHODS FOR GENERATING A THRESHOLD SIGNAL USED IN A MAGNETIC FIELD SENSOR BASED ON A PEAK SIGNAL ASSOCIATED WITH A PRIOR CYCLE OF A MAGNETIC FIELD SIGNAL 有权
标题翻译：基于与磁场信号的先前周期相关的峰值信号在磁场传感器中产生阈值信号的电路和方法
公开(公告)号：US20140145711A1
公开(公告)日：2014-05-29
申请号：US13685287
申请日：2012-11-26
申请人： Eric Burdette , James M. Bailey , Daniel S. Dwyer , Jeff Eagen , Glenn A. Forrest , Christine Graham , Eric Shoemaker , P. Karl Scheller
发明人： Eric Burdette , James M. Bailey , Daniel S. Dwyer , Jeff Eagen , Glenn A. Forrest , Christine Graham , Eric Shoemaker , P. Karl Scheller
IPC分类号： G01B7/14
CPC分类号： G01B7/14 , G01D5/2448 , G01P3/488 , G01P3/489
摘要： A circuit to detect a movement of an object includes a magnetic field sensing element for generating a magnetic field signal proportional to a magnetic field associated with the object and a motion detector to generate a motion signal indicative of the movement of the object. The motion detector includes a peak identifying circuit to provide a peak signal and a peak sample selection module that selects a sample associated with one or more prior cycles of a magnetic field signal to generate a selected peak signal. The motion detector further includes a threshold generator to generate a threshold signal as a function of the selected peak signal and a comparator to compare the threshold signal with the magnetic field signal to generate the motion signal. Peak samples from prior magnetic field signal cycles may be averaged for use to establish the threshold signal. A method associated with the circuit is also described.
摘要翻译：用于检测物体运动的电路包括用于产生与与物体相关联的磁场成比例的磁场信号的磁场感测元件和运动检测器，以产生指示物体运动的运动信号。运动检测器包括提供峰值信号的峰值识别电路和峰值采样选择模块，其选择与磁场信号的一个或多个先前循环相关联的采样以产生所选择的峰值信号。运动检测器还包括阈值产生器，用于根据所选择的峰值信号产生阈值信号;以及比较器，用于将阈值信号与磁场信号进行比较以产生运动信号。来自先前磁场信号周期的峰值采样可以被平均以用于建立阈值信号。还描述了与电路相关联的方法。

22. 发明申请

US20100181993A1 DIRECTION DETECTION SENSOR 有权
标题翻译：方向检测传感器
公开(公告)号：US20100181993A1
公开(公告)日：2010-07-22
申请号：US12355882
申请日：2009-01-19
申请人： Devon Fernandez , William P. Taylor , Michael Morris , P. Karl Scheller , Eric Shoemaker
发明人： Devon Fernandez , William P. Taylor , Michael Morris , P. Karl Scheller , Eric Shoemaker
IPC分类号： G01B7/00 , G01R33/09 , G01R33/07
CPC分类号： G01B7/30 , G01D5/145 , G01D5/2451 , G01R33/072 , G01R33/091
摘要： A sensor responsive to movement of a detection target includes a magnetic field transducer operative to provide a magnetic field signal proportional to a magnetic field associated with the detection target, a peak detector for tracking positive and negative peaks of the magnetic field signal to generate a tracking signal, and a comparator having a first input responsive to the magnetic field signal, a second input responsive to an input signal related to the tracking signal, and an output at which is provided an output signal comprising first pulses having a first pulse width when the detection target moves in a first direction and second pulses having a second pulse width when the detection target moves in a second direction.
摘要翻译：响应于检测目标的移动的传感器包括磁场传感器，该磁场传感器可操作以提供与与检测目标相关联的磁场成比例的磁场信号;峰值检测器，用于跟踪磁场信号的正峰值和负峰值以产生跟踪信号，以及具有响应于磁场信号的第一输入的比较器，响应于与跟踪信号相关的输入信号的第二输入，以及输出，在该输出处提供包括具有第一脉冲宽度的第一脉冲的输出信号，检测目标在第一方向上移动，并且当检测目标沿第二方向移动时具有第二脉冲宽度的第二脉冲。

23. 发明授权

US06242908B1 Detection of passing magnetic articles while adapting the detection threshold 有权
标题翻译：检测通过的磁性物品，同时适应检测阈值
公开(公告)号：US06242908B1
公开(公告)日：2001-06-05
申请号：US09275209
申请日：1999-03-24
申请人： P. Karl Scheller , Glenn A. Forrest
发明人： P. Karl Scheller , Glenn A. Forrest
IPC分类号： G01P348
CPC分类号： G01D5/24476 , G01D3/02 , G01D5/145 , G01D5/2448 , G01R33/02 , G01V3/081 , H03K5/082 , H03M1/303
摘要： A method for detection of passing magnetic articles which includes an initial step of sensing an ambient magnetic field and generating a voltage, Vsig, proportional to the magnetic field. A threshold voltage is generated as a percentage of the peak-to-peak voltage of Vsig. The method further includes the step of generating a detector output voltage that becomes one binary level when Vsig rises to exceed the threshold voltage and another binary level when Vsig falls to below the threshold voltage. The threshold voltage is updated to track the positive and negative peaks of the Vsig voltage and is further updated by a predetermined amount upon each transition of the Vout voltage.
摘要翻译：用于检测通过磁性制品的方法，其包括感测周围磁场并产生与磁场成比例的电压Vsig的初始步骤。产生阈值电压作为Vsig的峰 - 峰电压的百分比。该方法还包括以下步骤：当Vsig上升到超过阈值电压时，产生检测器输出电压，该电压变为一个二进制电平，当Vsig下降到阈值电压以下时，产生另一二进制电平。更新阈值电压以跟踪Vsig电压的正峰值和负峰值，并且在Vout电压的每次转换时进一步更新预定量。

24. 发明授权

US5694038A Detector of passing magnetic articles with automatic gain control 失效
标题翻译：带有自动增益控制的磁性物品检测器
公开(公告)号：US5694038A
公开(公告)日：1997-12-02
申请号：US587406
申请日：1996-01-17
申请人： Kristann L. Moody , Ravi Vig , P. Karl Scheller , Jay M. Towne , Teri L. Tu
发明人： Kristann L. Moody , Ravi Vig , P. Karl Scheller , Jay M. Towne , Teri L. Tu
IPC分类号： G01B7/00 , G01D3/02 , G01D5/14 , G01D5/244 , G01D5/245 , G01V3/08 , H03K17/95 , H03M1/30 , G01B7/30 , F02P17/02 , G01P3/489 , H03G1/00
CPC分类号： G01D5/2448 , G01D3/02 , G01D5/145 , H03M1/303
摘要： A magnetic-field-to-voltage transducer includes a Hall element and a digitally gain-controlled Hall-voltage amplifier that produces an analog voltage Vsig having excursions of one polarity corresponding to the passing of magnetic articles. Vsig is applied to the input of a signal-manipulating circuit that generates a proximity- detector binary output voltage, Vout, having transitions of one direction each time a predetermined point is reached in Vsig. A digitally gain-controlled gain amplifier is connected to the Hall element. A comparator circuit generates a binary signal Vbig (or V.sub.toobig) that changes from one to another binary level each time that Vsig exceeds a DC target voltage, V.sub.TG. The AGC circuit senses and counts gain counter excursions of one polarity in Vsig, and produces a binary count output signal at the input of the gain amplifier at each of the counted excursions in Vsig, incrementally changing the transducer gain in the direction to bring the peaks in Vsig to just below the target value T.sub.TG. This AGC feature prevents saturating the amplifier and quickly renders a Vsig of essentially constant amplitude so that either the peak excursion values or predetermined threshold levels in Vsig, at which transitions in the proximity detector output voltage Vout are caused to occur, provide greater accuracy and stability in the correlation between detection-approach and -withdrawal distances and transitions in Vout.
摘要翻译：磁场电压换能器包括霍尔元件和数字增益控制的霍尔电压放大器，其产生具有与磁性物品通过相对应的一个极性的偏移的模拟电压Vsig。 Vsig被施加到信号处理电路的输入端，该信号处理电路产生接近检测器二进制输出电压Vout，每当Vsig达到预定点时具有一个方向的转变。数字增益控制增益放大器连接到霍尔元件。比较器电路每当Vsig超过DC目标电压VTG时产生从一个到另一个二进制电平的二进制信号Vbig（或Vtoobig）。 AGC电路感测并计数Vsig中的一个极性的增益计数器偏移，并且在Vsig的每个计数偏移量的增益放大器的输入处产生二进制计数输出信号，在方向上递增地改变换能器增益以使峰值在Vsig中低于目标值TTG。该AGC功能可防止放大器饱和，并快速渲染基本上恒定幅度的Vsig，使得导致接近检测器输出电压Vout发生转换的Vsig中的峰值偏移值或预定阈值电平提供更高的精度和稳定性在Vout中的检测方法与取出距离和转换之间的相关性。

25. 发明授权

US09222990B2 Magnetic field sensors and related techniques that can communicate at least one of three or more potential categories in which one or more characteristic values of a proximity signal responsive to a proximity of a sensed object are categorized 有权
标题翻译：磁场传感器和相关技术可以通信三个或更多个潜在类别中的至少一个，其中响应于感测对象的接近度的接近信号的一个或多个特征值被分类
公开(公告)号：US09222990B2
公开(公告)日：2015-12-29
申请号：US13526099
申请日：2012-06-18
申请人： Daniel S. Dwyer , Christine M. Graham , P. Karl Scheller
发明人： Daniel S. Dwyer , Christine M. Graham , P. Karl Scheller
IPC分类号： G01B7/30 , G01R33/02 , G01R33/00 , G01R33/07
CPC分类号： G01R33/02 , G01R33/0029 , G01R33/07
摘要： A method of performing a self-test associated with a magnetic field sensor includes generating a proximity signal responsive to a proximity of a sensed object with one or more magnetic field sensing elements, and identifying one or more characteristic values associated with the proximity signal while the proximity signal is responding to the proximity signal, The method also includes categorizing the one or more characteristic values into three or more potential categories, including three or more categories, wherein the plurality of potential categories is representative of a plurality of discrete self-test states of the proximity signal that could occur while the proximity signal is responding to the proximity of the sensed object. The method also includes communicating at least one of the plurality of potential categories into which at least one of the one or more characteristic values was categorized. A magnetic field senor implements the above method.
摘要翻译：执行与磁场传感器相关联的自检的方法包括响应于感测对象与一个或多个磁场感测元件的接近度而生成接近信号，以及识别与接近信号相关联的一个或多个特征值，同时接近信号响应于接近信号。该方法还包括将一个或多个特征值分类为三个或更多个潜在类别，包括三个或更多个类别，其中多个潜在类别表示多个离散自检状态当接近信号响应感测对象的接近时可能发生的接近信号。所述方法还包括将所述一个或多个特征值中的至少一个分类到所述多个潜在类别中的至少一个进行通信。磁场传感器实现上述方法。

26. 发明授权

US08723512B1 Circuits and methods for generating a threshold signal used in a magnetic field sensor based on a peak signal associated with a prior cycle of a magnetic field signal 有权
标题翻译：基于与磁场信号的先前周期相关联的峰值信号来产生在磁场传感器中使用的阈值信号的电路和方法
公开(公告)号：US08723512B1
公开(公告)日：2014-05-13
申请号：US13685287
申请日：2012-11-26
申请人： Eric Burdette , James M. Bailey , Daniel S. Dwyer , Jeff Eagen , Glenn A. Forrest , Christine Graham , Eric Shoemaker , P. Karl Scheller
发明人： Eric Burdette , James M. Bailey , Daniel S. Dwyer , Jeff Eagen , Glenn A. Forrest , Christine Graham , Eric Shoemaker , P. Karl Scheller
IPC分类号： G01B7/30
CPC分类号： G01B7/14 , G01D5/2448 , G01P3/488 , G01P3/489
摘要： A circuit to detect a movement of an object includes a magnetic field sensing element for generating a magnetic field signal proportional to a magnetic field associated with the object and a motion detector to generate a motion signal indicative of the movement of the object. The motion detector includes a peak identifying circuit to provide a peak signal and a peak sample selection module that selects a sample associated with one or more prior cycles of a magnetic field signal to generate a selected peak signal. The motion detector further includes a threshold generator to generate a threshold signal as a function of the selected peak signal and a comparator to compare the threshold signal with the magnetic field signal to generate the motion signal. Peak samples from prior magnetic field signal cycles may be averaged for use to establish the threshold signal. A method associated with the circuit is also described.
摘要翻译：用于检测物体运动的电路包括用于产生与与物体相关联的磁场成比例的磁场信号的磁场感测元件和运动检测器，以产生指示物体运动的运动信号。运动检测器包括提供峰值信号的峰值识别电路和峰值采样选择模块，其选择与磁场信号的一个或多个先前循环相关联的采样以产生所选择的峰值信号。运动检测器还包括阈值产生器，用于根据所选择的峰值信号产生阈值信号;以及比较器，用于将阈值信号与磁场信号进行比较以产生运动信号。来自先前磁场信号周期的峰值采样可以被平均以用于建立阈值信号。还描述了与电路相关联的方法。

27. 发明申请

US20130335074A1 Magnetic Field Sensors and Related Techniques That Can Provide Self-Test Information 有权
标题翻译：磁场传感器及相关技术可提供自检信息
公开(公告)号：US20130335074A1
公开(公告)日：2013-12-19
申请号：US13526099
申请日：2012-06-18
申请人： Daniel S. Dwyer , Christine Graham , P. Karl Scheller
发明人： Daniel S. Dwyer , Christine Graham , P. Karl Scheller
IPC分类号： G01N27/72
CPC分类号： G01R33/02 , G01R33/0029 , G01R33/07
摘要： Magnetic field sensor and related techniques can identify passing conditions, failing conditions, and marginal conditions of a sensed object. The magnetic field sensor and techniques can use one or more peak values of a proximity signal representative of proximity of the object, DC offset values of the proximity signal, or threshold values related to an amplitude of a signal representative of the proximity signal to identify the conditions.
摘要翻译：磁场传感器和相关技术可以识别感测对象的通过条件，故障条件和边缘条件。磁场传感器和技术可以使用表示物体接近度的接近信号的一个或多个峰值，接近信号的DC偏移值或与表示接近信号的信号的幅度有关的阈值，以识别条件。

28. 发明申请

US20130335068A1 Magnetic Field Sensors And Related Techniques That Can Provide A Self-Test Using Signals And Related Thresholds 有权
标题翻译：可以使用信号和相关阈值提供自检的磁场传感器和相关技术
公开(公告)号：US20130335068A1
公开(公告)日：2013-12-19
申请号：US13526113
申请日：2012-06-18
申请人： Daniel S. Dwyer , Christine Graham , P. Karl Scheller
发明人： Daniel S. Dwyer , Christine Graham , P. Karl Scheller
IPC分类号： G01R35/00
CPC分类号： G01D5/147 , G01R33/072
摘要： Magnetic field sensor and related techniques can identify passing conditions, failing conditions, and marginal conditions of a sensed object. The magnetic field sensor and techniques can use one or more peak values of a proximity signal representative of proximity of the object, DC offset values of the proximity signal, or threshold values related to an amplitude of a signal representative of the proximity signal to identify the conditions.
摘要翻译：磁场传感器和相关技术可以识别感测对象的通过条件，故障条件和边缘条件。磁场传感器和技术可以使用表示物体接近度的接近信号的一个或多个峰值，接近信号的DC偏移值或与表示接近信号的信号的幅度相关的阈值，以识别条件。

29. 发明授权

US08022692B2 Direction detection sensor 有权
标题翻译：方向检测传感器
公开(公告)号：US08022692B2
公开(公告)日：2011-09-20
申请号：US12355882
申请日：2009-01-19
申请人： Devon Fernandez , William P. Taylor , Michael Morris , P. Karl Scheller , Eric Shoemaker
发明人： Devon Fernandez , William P. Taylor , Michael Morris , P. Karl Scheller , Eric Shoemaker
IPC分类号： G01B7/14
CPC分类号： G01B7/30 , G01D5/145 , G01D5/2451 , G01R33/072 , G01R33/091
摘要： A sensor responsive to movement of a detection target includes a magnetic field transducer operative to provide a magnetic field signal proportional to a magnetic field associated with the detection target, a peak detector for tracking positive and negative peaks of the magnetic field signal to generate a tracking signal, and a comparator having a first input responsive to the magnetic field signal, a second input responsive to an input signal related to the tracking signal, and an output at which is provided an output signal comprising first pulses having a first pulse width when the detection target moves in a first direction and second pulses having a second pulse width when the detection target moves in a second direction.
摘要翻译：响应于检测目标的移动的传感器包括磁场传感器，该磁场传感器可操作以提供与与检测目标相关联的磁场成比例的磁场信号;峰值检测器，用于跟踪磁场信号的正峰值和负峰值以产生跟踪信号，以及具有响应于磁场信号的第一输入的比较器，响应于与跟踪信号相关的输入信号的第二输入，以及输出，在该输出处提供包括具有第一脉冲宽度的第一脉冲的输出信号，检测目标在第一方向上移动，并且当检测目标沿第二方向移动时具有第二脉冲宽度的第二脉冲。

30. 发明授权

US06693419B2 Proximity detector 有权
标题翻译：接近检测器
公开(公告)号：US06693419B2
公开(公告)日：2004-02-17
申请号：US10156684
申请日：2002-05-28
申请人： Jason T. Stauth , P. Karl Scheller , Glenn A. Forrest , Ravi Vig , Jay M. Towne
发明人： Jason T. Stauth , P. Karl Scheller , Glenn A. Forrest , Ravi Vig , Jay M. Towne
IPC分类号： G01B714
CPC分类号： G01D5/24428 , G01V3/08
摘要： A proximity detector includes an offset circuit for bringing at least one of a magnetic field signal and a tracking signal towards the other one of the magnetic field signal and the tracking signal when the detector output signal changes state. A magnetic field-to-voltage transducer provides the magnetic field signal indicative of an ambient magnetic field and a peak detector responsive to the magnetic field signal provides the tracking signal which substantially follows the magnetic field signal. A comparator generates the detector output signal which changes state when the magnetic field signal varies from the tracking signal by a predetermined amount.
摘要翻译：接近检测器包括偏移电路，用于当检测器输出信号改变状态时，使磁场信号和跟踪信号中的至少一个朝向另一个磁场信号和跟踪信号。磁场电压换能器提供指示环境磁场的磁场信号，响应于磁场信号的峰值检测器提供基本上遵循磁场信号的跟踪信号。比较器产生检测器输出信号，该信号当磁场信号从跟踪信号变化预定量时改变状态。

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