公开(公告)号：US06597553B2

公开(公告)日：2003-07-22

申请号：US10026752

申请日：2001-12-18

申请人： Jason M. Chilcote ,  Peter G. Hancock

发明人： Jason M. Chilcote ,  Peter G. Hancock

IPC分类号： H02H320

CPC分类号： H03K17/0826

摘要： A voltage driver having a pass transistor using a sensing diode and disabling transistor to sense and disable the driver during a short circuit condition. No current sense resistors or other devices in series with the pass transistor are used. During a short circuit condition, the collector-emitter (or drain-source) voltage of the pass transistor prevents the sensing diode from conducting which causes the disabling transistor to remove the control signal to the pass transistor. This latches the driver output off, protecting the driver from the short circuit condition. Recycling the control signal unlatches the protection, allowing another attempt to turn on the driver.

摘要翻译： 具有传感晶体管的电压驱动器，其使用感测二极管，并且在短路状态下禁用晶体管来感测和禁用驱动器。 不使用与传输晶体管串联的电流检测电阻器或其他器件。 在短路状态期间，传输晶体管的集电极 - 发射极（或漏极 - 源极）电压防止感测二极管导通，这导致禁用晶体管去除传输晶体管的控制信号。 这会锁定驱动器输出，保护驱动器免受短路情况的影响。 回收控制信号解除保护，允许另一次尝试打开驱动程序。

公开(公告)号：US5262615A

公开(公告)日：1993-11-16

申请号：US787858

申请日：1991-11-05

申请人： Peter G. Hancock

发明人： Peter G. Hancock

IPC分类号： H01C17/242 ,  B23K26/00

CPC分类号： H01C17/242

摘要： A trimmable resistor is provided which can be trimmed with a single movement of a laser beam without requiring intermitted deenergizations of the beam accompanied by measurements of the resistance to determine additional material removal steps. The procedure of the present invention begins the material removal at a location within the body of the resistor and displaced from all edges of the resistor body by a predetermined amount. The energization of the laser immediately begins to remove material at its initial location and, as the laser is moved to a second location, a single cut is made to calibrate the resistor wherein the entire cut is located within the body of the resistor and no part of the cut intersects any edge of the resistor body. The length of the cut is calculated prior to initiation of the trimming procedure and the technique of the present invention permits the movement of the laser beam to be precisely made without positioning error being induced by the normal initiation point which is located outside of the body of the resistor in trimming techniques known to those skilled in the art.

摘要翻译： 提供了可调节的电阻器，其可以用激光束的单次移动来修整，而不需要伴随着电阻的测量的中断的光束的断电以确定附加的材料去除步骤。 本发明的方法开始在电阻体内的位置处的材料去除，并从电阻体的所有边缘移位预定量。 激光器的激励立即开始在其初始位置处去除材料，并且当激光器移动到第二位置时，进行单个切割以校准电阻器，其中整个切口位于电阻器的主体内，并且没有部分 的切口与电阻体的任何边缘相交。 在修剪过程开始之前计算切割长度，并且本发明的技术允许准确地进行激光束的移动，而不会由位于主体外部的正常起始点引起定位误差 本领域技术人员已知的修整技术中的电阻器。

公开(公告)号：US5293148A

公开(公告)日：1994-03-08

申请号：US912936

申请日：1992-07-13

申请人： Peter G. Hancock

发明人： Peter G. Hancock

IPC分类号： H01C1/16 ,  H01C7/22

CPC分类号： H01C1/16

摘要： A resistor network is provided which significantly reduces the total number of resistors required to achieve a given resolution. It comprises a cell of resistors that consists of a nonbinary number of resistors that is not evenly divisible by an integer power of two and is specifically selected to permit the group of resistors to be sequentially reduced to subgroups, or combinations, of resistors which yield a plurality of subgroup resistances that differ from preceding or subsequent subgroup resistances by a generally equivalent differential. The cell of resistors is combined with a plurality of resistor cells that consist of binary numbers of resistors in a conventional resistor ladder format. When combined with the binary resistor cells, the cell consisting of a nonbinary number of resistors provides a substantially similar resolution with a significant reduction in the number of resistors required. One embodiment of the present invention permits the resolution of a sixty-two resistor ladder to be simulated by a ladder that comprises only twenty-three resistors.

摘要翻译： 提供了一个电阻网络，显着减少了达到给定分辨率所需的电阻总数。 它包括一个电阻单元，由一个非二进制数的电阻组成，不能被两个整数倍的整数分解，并且被特别地选择为允许电阻组被顺序地还原成电阻的子组或组合，产生一个 多个亚组电阻与先前或之后的亚组电阻不同，通常为等效差。 电阻器的单元与由传统电阻梯形式的二进制数的电阻组成的多个电阻单元组合。 当与二进制电阻器单元组合时，由非二进制数量的电阻器组成的单元提供了基本相似的分辨率，显着减少了所需的电阻器数量。 本发明的一个实施例允许通过仅包括二十三个电阻器的梯形图来模拟六十二个电阻梯的分辨率。

公开(公告)号：US07493823B2

公开(公告)日：2009-02-24

申请号：US11455040

申请日：2006-06-16

申请人： Carl E. Stewart ,  Peter G. Hancock

发明人： Carl E. Stewart ,  Peter G. Hancock

IPC分类号： G01L9/00

CPC分类号： G01L19/148 ,  G01L9/0052 ,  G01L9/06

摘要： A semiconductor-based pressure sensor adapted for enhanced operation with controls electronics includes a pressure transducer having an output formed on a silicon die and an amplifier having an input and an output and fabricated on the silicon die next to the pressure transducer. The pressure transducer's output is provided to the amplifier's input via electrical connection. Output from the amplifier is connectable to a controller such as an ASIC.

摘要翻译： 适用于通过控制电子装置增强操作的基于半导体的压力传感器包括具有形成在硅管芯上的输出的压力传感器和具有输入和输出的放大器，并且在压缩换能器旁边的硅管芯上制造。 压力传感器的输出通过电气连接提供给放大器的输入。 放大器的输出可连接到诸如ASIC的控制器。

公开(公告)号：US06967477B1

公开(公告)日：2005-11-22

申请号：US11003845

申请日：2004-12-02

申请人： Joseph K. Murdock ,  Greg R. Furlong ,  Peter G. Hancock ,  Fred W. Hintz

发明人： Joseph K. Murdock ,  Greg R. Furlong ,  Peter G. Hancock ,  Fred W. Hintz

IPC分类号： G01B7/30 ,  G01D5/14 ,  G01D5/244

CPC分类号： G01D5/145 ,  G01D5/147 ,  G01D5/24452 ,  G01D5/2448 ,  G01D5/2449

摘要： Methods and systems for detecting a rotating target are disclosed herein, wherein a biasing magnet is associated with a rotating target in association with a dual peak detector. The rotating target generally comprises a plurality of teeth and at least one slot formed between at least one tooth of the rotating target. In general, the biasing magnet and the rotating target generate a magnetic signal having positive and negative peaks thereof. The dual peak detector includes a tooth detector and a slot detector, such that the dual peak detector detects a minimum and maximum peak of the magnetic signal generated by the biasing magnet and the rotating target. Additionally, a clamping circuit can be associated with the dual peak detector, wherein the clamping circuit can provide a true power on (TPO) functionality.

摘要翻译： 本文公开了用于检测旋转靶的方法和系统，其中与双峰检测器相关联的偏置磁体与旋转靶相关联。 旋转靶通常包括多个齿和形成在旋转靶的至少一个齿之间的至少一个槽。 通常，偏置磁体和转动目标产生具有正和负峰的磁信号。 双峰检测器包括齿检测器和缝隙检测器，使得双峰检测器检测由偏置磁体和旋转靶产生的磁信号的最小和最大峰值。 此外，钳位电路可以与双峰值检测器相关联，其中钳位电路可以提供真正的上电（TPO）功能。

公开(公告)号：US5867021A

公开(公告)日：1999-02-02

申请号：US798975

申请日：1997-02-11

申请人： Peter G. Hancock

发明人： Peter G. Hancock

IPC分类号： G01B7/30 ,  G01B7/14

CPC分类号： G01B7/30

摘要： A magnetic sensor is operated by a method which provides a magnetic field extending through a preselected detection zone. A permanent magnet can be used to provide the magnetic field. The method disposes a magnetically sensitive component within the magnetic field and the magnetically sensitive component, such as a Hall effect element, provides a first signal that is responsive to a portion of the magnetic field imposed on the magnetically sensitive component. The sensor also determines a base value and measures a maximum magnitude of the first signal during a preselected period of time, such as the time required for a gear to rotate so that all of its ferromagnetic teeth pass through the detection zone. The sensor also determines a reference value as a function of the base value and the maximum magnitude. The sensor compares the first signal to the reference value and provides a second signal that is a function of the relative magnitudes of the first signal and the reference value, whereby the second signal is representative of the position of the ferromagnetic object relative to the detection zone.

摘要翻译： 磁传感器通过提供延伸通过预选检测区域的磁场的方法来操作。 可以使用永久磁铁来提供磁场。 该方法将磁敏元件配置在磁场内，并且诸如霍尔效应元件的磁敏元件提供响应于施加在磁敏元件上的磁场的一部分的第一信号。 传感器还确定基值并且在预选的时间段期间测量第一信号的最大幅度，例如齿轮旋转所需的时间，使得其所有铁磁齿通过检测区。 传感器还将基准值确定为基值和最大幅度的函数。 传感器将第一信号与参考值进行比较，并提供作为第一信号和参考值的相对幅度的函数的第二信号，由此第二信号代表铁磁体相对于检测区的位置 。

公开(公告)号：US20070289389A1

公开(公告)日：2007-12-20

申请号：US11455040

申请日：2006-06-16

申请人： Carl E. Stewart ,  Peter G. Hancock

发明人： Carl E. Stewart ,  Peter G. Hancock

IPC分类号： G01L9/00

CPC分类号： G01L19/148 ,  G01L9/0052 ,  G01L9/06

摘要： A semiconductor-based pressure sensor adapted for enhanced operation with controls electronics includes a pressure transducer having an output formed on a silicon die and an amplifier having an input and an output and fabricated on the silicon die next to the pressure transducer. The pressure transducer's output is provided to the amplifier's input via electrical connection. Output from the amplifier is connectable to a controller such as an ASIC.

摘要翻译： 适用于通过控制电子装置增强操作的基于半导体的压力传感器包括具有形成在硅管芯上的输出的压力传感器和具有输入和输出的放大器，并且在压缩换能器旁边的硅管芯上制造。 压力传感器的输出通过电气连接提供给放大器的输入。 放大器的输出可连接到诸如ASIC的控制器。

公开(公告)号：US06191576B1

公开(公告)日：2001-02-20

申请号：US09107798

申请日：1998-06-30

申请人： Lamar F. Ricks ,  Wayne A. Lamb ,  Peter G. Hancock

发明人： Lamar F. Ricks ,  Wayne A. Lamb ,  Peter G. Hancock

IPC分类号： G01B730

CPC分类号： G01D5/24476 ,  G01D3/02 ,  G01D5/2448

摘要： A geartooth sensor utilizes an algorithm for establishing an adaptive threshold for the switch point of the sensor to minimize drift in the point at which the sensor output changes in relation to the target features it is tracking. The algorithm utilizes measured waveform peak and average outputs and applies a separate empirically derived constant to each value to quickly obtain the major portion of the adaptive threshold value from the product of the first constant and the peak output, and to refine the threshold value further with the product of the second constant and the average output.

摘要翻译： 齿轮传感器利用算法为传感器的切换点建立自适应阈值，以使传感器输出相对于其正在跟踪的目标特征发生变化的点的漂移最小化。 该算法利用测量波形峰值和平均输出，并对每个值应用单独的经验导出常数，以从第一个常数和峰值输出的乘积快速获得自适应阈值的主要部分，并进一步细化阈值 第二个常数和平均输出的乘积。

公开(公告)号：US5497082A

公开(公告)日：1996-03-05

申请号：US377871

申请日：1995-01-25

申请人： Peter G. Hancock

发明人： Peter G. Hancock

IPC分类号： G01D5/14 ,  G01D5/16 ,  G01P3/487 ,  G01P13/04 ,  G01R33/07 ,  G01R33/09 ,  G01B7/14 ,  G01P3/42 ,  G01R33/02 ,  G01R33/12

CPC分类号： G01R33/09 ,  G01D5/145 ,  G01P13/045 ,  G01P3/487 ,  G01R33/07

摘要： A position sensor is provided with the capability of detecting a quadrature signal by the provision of first and second magnetically sensitive devices. The first magnetically sensitive device comprises a Hall effect element or some other device which is capable of sensing strength of a component of a magnetic field which is perpendicular to a preselected plane. A second magnetically sensitive device is provided which is capable of sensing the component of a magnetic field lying in the same plane. In a preferred embodiment, the first magnetically sensitive device is a Hall effect element and the second magnetically sensitive device comprises at least one magnetoresistor. The first and second magnetically sensitive devices are disposed on a common substrate and arranged to have a common geometric center. When the device is associated with a moving target that comprises a plurality of magnetized regions, accurate determination is possible with respect to both the rate of movement and the direction of movement of the target.

摘要翻译： 位置传感器具有通过提供第一和第二磁敏装置来检测正交信号的能力。 第一磁敏装置包括霍尔效应元件或能够感测与预选平面垂直的磁场的分量的强度的一些其它装置。 提供了能够感测位于同一平面中的磁场的分量的第二磁敏装置。 在优选实施例中，第一磁感应装置是霍尔效应元件，第二磁敏装置包括至少一个磁阻。 第一和第二磁敏装置设置在共同的基板上并被布置成具有共同的几何中心。 当设备与包括多个磁化区域的移动目标相关联时，可以针对目标的移动速度和移动方向进行准确的确定。

公开(公告)号：US5488296A

公开(公告)日：1996-01-30

申请号：US378294

申请日：1995-01-25

申请人： Peter G. Hancock

发明人： Peter G. Hancock

IPC分类号： G01D3/036 ,  G01R33/07 ,  H01L43/06 ,  H03K17/90

CPC分类号： G01D3/0365 ,  G01R33/07

摘要： A magnetic detection circuit is provided which creates a reference signal that varies with temperature in a manner that is generally identical to the temperature induced variation of a Hall element. By providing a temperature sensitive reference signal, the Hall output signal can be compared to the reference signal without errors being induced by temperature change. One embodiment of the present invention provides a first resistor connected in parallel with the diode which, in turn, is connected between a Hall cell and a point of ground potential. Another embodiment of the present invention comprises a second resistor that is connected in series with the first resistor and in parallel with the Hall cell. Another embodiment of the present invention also incorporates a temperature sensitive resistor that is made of the same material as the Hall cell and used in conjunction with a trimmable resistor to provide inputs to an operational amplifier.

摘要翻译： 提供了一种磁检测电路，其产生以与霍尔元件的温度引起的变化大致相同的方式随温度变化的参考信号。 通过提供温度敏感的参考信号，霍尔输出信号可以与参考信号进行比较，温度变化不会引起误差。 本发明的一个实施例提供了一个与二极管并联连接的第一电阻器，二极管又连接在霍尔单元和地电位点之间。 本发明的另一实施例包括与第一电阻器串联连接并与霍尔单元并联连接的第二电阻器。 本发明的另一个实施例还包括由与霍尔单元相同的材料制成的温度敏感电阻器，并与可调节电阻器结合使用以向运算放大器提供输入。