利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

37 条记录 (耗时 0.033 秒)

    Circuits and methods for generating a threshold signal used in a motion detector
    2.
    发明授权
    Circuits and methods for generating a threshold signal used in a motion detector 有权
    用于产生在运动检测器中使用的阈值信号的电路和方法

    公开(公告)号：US08598867B2

    公开(公告)日：2013-12-03

    申请号：US12793813

    申请日：2010-06-04

    申请人： Andrea Foletto ,  Andreas P. Friedrich

    发明人： Andrea Foletto ,  Andreas P. Friedrich

    IPC分类号： G01B7/30

    CPC分类号： G01B7/14 ,  G01D5/145 ,  G01D5/24476 ,  G01P3/488 ,  G01P3/489

    摘要： A circuit to detect a movement of an object provides a threshold selection module that uses one or more threshold signals identified prior to a present cycle of magnetic field signal in order to establish a threshold signal used for a present cycle of the magnetic field signal. A method associated with the circuit is also described.

    摘要翻译： 用于检测物体的移动的电路提供阈值选择模块，该阈值选择模块使用在磁场信号的当前周期之前识别的一个或多个阈值信号，以便建立用于磁场信号的当前周期的阈值信号。 还描述了与电路相关联的方法。

    Magnetic field sensor for sensing rotation of an object
    4.
    发明授权
    Magnetic field sensor for sensing rotation of an object 有权
    用于感测物体旋转的磁场传感器

    公开(公告)号：US09182456B2

    公开(公告)日：2015-11-10

    申请号：US13413037

    申请日：2012-03-06

    申请人： Eric Shoemaker ,  Michael C. Doogue ,  Andreas P. Friedrich ,  Andrea Foletto

    发明人： Eric Shoemaker ,  Michael C. Doogue ,  Andreas P. Friedrich ,  Andrea Foletto

    IPC分类号： G01P3/00 ,  G01R33/07 ,  G01D5/14 ,  G01D5/244

    CPC分类号： G01R33/077 ,  G01D5/145 ,  G01D5/24438 ,  G01R33/075

    摘要： A magnetic field sensor uses an angle sensor to measure and angle of rotation of a target object to which a magnet is attached. The angle sensor in combination with electronics can generate an angle sensor output signal related to a direction of a magnetic field of the magnet. The angle sensor output signal can be compared to thresholds to generate a magnetic field sensor output signal the same as a known true power on state (TPOS) sensor output signal. A corresponding method is also described.

    摘要翻译： 磁场传感器使用角度传感器来测量和附着磁体的目标物体的旋转角度。 与电子装置组合的角度传感器可以产生与磁体的磁场方向相关的角度传感器输出信号。 角度传感器输出信号可以与阈值进行比较，以产生与已知的真电源开启状态（TPOS）传感器输出信号相同的磁场传感器输出信号。 还描述了相应的方法。

    GEAR TOOTH SENSOR WITH PEAK AND THRESHOLD DETECTORS
    6.
    发明申请
    GEAR TOOTH SENSOR WITH PEAK AND THRESHOLD DETECTORS 有权
    齿轮传感器与峰值和阈值检测器

    公开(公告)号：US20130320970A1

    公开(公告)日：2013-12-05

    申请号：US13484501

    申请日：2012-05-31

    申请人： Andrea Foletto ,  Michael Morris ,  Mathew Drouin ,  Devon Fernandez ,  Andreas P. Friedrich ,  P. Karl Scheller

    发明人： Andrea Foletto ,  Michael Morris ,  Mathew Drouin ,  Devon Fernandez ,  Andreas P. Friedrich ,  P. Karl Scheller

    IPC分类号： G01R33/06 ,  G01R33/02

    CPC分类号： G01D5/2448 ,  G01D5/145

    摘要： Presented herein is a magnetic field sensor architecture that uses outputs of a peak detector and threshold detector operating in parallel to detect magnetic anomalies that may be associated with the target being sensed, e.g., a rotational ferromagnetic object such as a toothed gear, and use such detection to prevent sensor malfunction. The sensor includes an edge detection circuit and an error detection circuit. In one embodiment, the edge detection circuit includes circuits to detect edges (or transitions) of the threshold and peak detector output signals and the error detection circuit includes circuits, responsive to the edge detection circuit, to indicate an error when a “missed transition” occurs or a peak-to-peak value of an input signal as detected by the peak detector for a current cycle differs from an expected peak-to-peak value by a predetermined amount.

    摘要翻译： 这里呈现的是一种磁场传感器架构，其使用平行操作的峰值检测器和阈值检测器的输出来检测可能与感测到的目标相关联的磁异常，例如旋转铁磁物体，例如齿轮，并使用 检测以防止传感器故障。 传感器包括边缘检测电路和错误检测电路。 在一个实施例中，边缘检测电路包括用于检测阈值和峰值检测器输出信号的边缘（或转换）的电路，并且误差检测电路包括响应于边缘检测电路的指示当“错过转换” 或由峰值检测器为当前周期检测的输入信号的峰 - 峰值与期望的峰 - 峰值不同预定量。

    HIGH ACCURACY DIFFERENTIAL CURRENT SENSOR FOR APPLICATIONS LIKE GROUND FAULT INTERRUPTERS
    7.
    发明申请
    HIGH ACCURACY DIFFERENTIAL CURRENT SENSOR FOR APPLICATIONS LIKE GROUND FAULT INTERRUPTERS 有权
    高精度差分电流传感器应用类似接地故障中断

    公开(公告)号：US20130265041A1

    公开(公告)日：2013-10-10

    申请号：US13439094

    申请日：2012-04-04

    申请人： Andreas P. Friedrich ,  Andrea Foletto ,  P. Karl Scheller ,  William P. Taylor ,  Michael C. Doogue

    发明人： Andreas P. Friedrich ,  Andrea Foletto ,  P. Karl Scheller ,  William P. Taylor ,  Michael C. Doogue

    IPC分类号： G01R19/00

    CPC分类号： G01R15/207

    摘要： A sensor with multiple magnetic field sensing elements for use in current sensing and other applications is presented. In one configuration, the sensor can obtain differential and absolute current measurements of current in current-carrying conductors. When employed in a ground fault interrupter (GFI) application, a first magnetic field sensing element can be used to measure the absolute current flowing in the phase conductor (phase current), a second magnetic field sensing element can be used to measure the absolute current flowing in the neutral conductor (neutral current) and a difference between the phase and neutral currents can be measured by a third magnetic field sensing element or determined from measurements of the first and second magnetic field sensing elements. In another configuration, the sensor can obtain a measure of the difference between currents and/or the sum of currents in current-carrying conductors.

    摘要翻译： 提出了一种用于电流检测和其他应用的具有多个磁场感测元件的传感器。 在一种配置中，传感器可以获得载流导体中电流的差分和绝对电流测量。 当用于接地故障断续器（GFI）应用时，可以使用第一磁场感测元件来测量在相导体（相电流）中流动的绝对电流，第二磁场感测元件可用于测量绝对电流 在中性导体（中性电流）中流动，并且相电流和中性电流之间的差异可以由第三磁场感测元件测量或者由第一和第二磁场感测元件的测量确定。 在另一种配置中，传感器可以获得电流差和/或载流导体中电流之和的量度。

    DIFFERENTIAL MAGNETIC FIELD SENSOR STRUCTURE FOR ORIENTATION INDEPENDENT MEASUREMENT
    8.
    发明申请
    DIFFERENTIAL MAGNETIC FIELD SENSOR STRUCTURE FOR ORIENTATION INDEPENDENT MEASUREMENT 有权
    用于方位独立测量的差分磁场传感器结构

    公开(公告)号：US20120249133A1

    公开(公告)日：2012-10-04

    申请号：US13078200

    申请日：2011-04-01

    申请人： Andreas P. Friedrich

    发明人： Andreas P. Friedrich

    IPC分类号： G01R33/02

    CPC分类号： G01R33/0005 ,  G01R33/0029 ,  G01R33/072 ,  G01R33/091

    摘要： A differential magnetic field sensor that enables operation that is independent of sensor-to-target orientation is presented. The differential magnetic field sensor is provided with at least two differential channels. Each differential channel includes a pair of magnetic field sensing elements and has a respective sensing axis defined by those magnetic field sensing elements. The sensing axes are not aligned with respect to each other. One sensing axis is positioned relative to a reference axis of a target profile to define an orientation angle between the sensing axis and the reference axis. The differential magnetic field sensor includes circuitry to produce differential signals associated with the differential channels and use those differential signals to produce a single differential signal having an amplitude that is independent of the orientation angle.

    摘要翻译： 介绍了一种差分磁场传感器，可实现与传感器到目标方向无关的操作。 差分磁场传感器设置有至少两个差分通道。 每个差分通道包括一对磁场感测元件，并且具有由那些磁场感测元件限定的相应感测轴。 检测轴不相对于彼此对准。 一个感测轴相对于目标轮廓的参考轴定位，以限定感测轴和参考轴之间的取向角。 差分磁场传感器包括产生与差分通道相关的差分信号的电路，并使用这些差分信号产生具有独立于取向角的幅度的单个差分信号。