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公开(公告)号：US06727689B1
公开(公告)日：2004-04-27
申请号：US10631850
申请日：2003-07-24
IPC分类号： G01P3489
CPC分类号： G01D5/2448 , G01P3/4802 , G01P3/488 , G01P3/489
摘要： An apparatus and method for detecting gear features is provided. The apparatus includes a magnetic-sensing element, a thresholding module, and an output module. The magnetic-sensing element may provide a sensor-output signal indicative of the presence of a gear feature. The thresholding module may (i) transform the sensor-output signal into a characteristic waveform, which is also indicative of the presence of the gear feature; (ii) detect a first difference between the characteristic waveform and a reference signal, and responsively provide a tracking signal that tracks this difference; and (iii) detect a second difference between the tracking and reference signals, and responsively adjust the sensor-output signal. Adjustment may be performed (i) as a function of the second difference when it falls below a given threshold and (ii) by a predetermined amount when the second difference satisfies the given threshold. The output module may produce an output signal as a function of the characteristic waveform and the reference signals.
摘要翻译： 提供一种用于检测齿轮特征的装置和方法。 该装置包括磁感元件，阈值模块和输出模块。 磁传感元件可以提供指示齿轮特征存在的传感器输出信号。阈值模块可以（i）将传感器输出信号转换成特征波形，其也指示齿轮特征的存在 ; （ii）检测特征波形和参考信号之间的第一差异，并且响应地提供跟踪该差异的跟踪信号; 并且（iii）检测跟踪信号和参考信号之间的第二差异，并且响应地调整传感器输出信号。调整可以在（i）当其低于给定阈值时作为第二差异的函数执行（ii） 当第二差异满足给定阈值时的预定量。 输出模块可以产生作为特征波形和参考信号的函数的输出信号。
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公开(公告)号：US07049914B2
公开(公告)日：2006-05-23
申请号：US10859311
申请日：2004-06-02
IPC分类号： H01H7/00
CPC分类号： E05B85/26 , E05B81/66 , E05B81/70 , E05B2047/0068 , E05B2047/0069
摘要： A door position sensing system includes a door claw having first and second magnets mounted thereon, and a Hall sensor mounted so as to sense the magnetic fields of the first and second magnets. The first magnet is mounted in a door half-latch position, and the second magnet is mounted in a door full-latch position. A processor is responsive to the Hall sensor to provide outputs indicating the half-latch and full-latch positions of a door. The processor may also be arranged to indicate a door open position when neither magnet is near the sensor.
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公开(公告)号：US07026897B2
公开(公告)日：2006-04-11
申请号：US10336477
申请日：2003-01-03
IPC分类号： H01H9/00
CPC分类号： E05B85/26 , E05B81/66 , E05B81/70 , E05B2047/0068 , E05B2047/0069
摘要： A door position sensing system includes a door claw having first and second magnets mounted thereon, and a Hall sensor mounted so as to sense the magnetic fields of the first and second magnets. The first magnet is mounted in a door half-latch position, and the second magnet is mounted in a door full-latch position. A processor is responsive to the Hall sensor to provide outputs indicating the half-latch and full-latch positions of a door. The processor may also be arranged to indicate a door open position when neither magnet is near the sensor.
摘要翻译： 门位置检测系统包括具有安装在其上的第一和第二磁体的门爪和安装成感测第一和第二磁体的磁场的霍尔传感器。 第一磁体安装在门半闩锁位置，第二磁体安装在门的全闩锁位置。 处理器响应于霍尔传感器以提供指示门的半锁定和完全闩锁位置的输出。 处理器也可以被布置为当两个磁体都不在传感器附近时指示门打开位置。
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4.发明授权Adaptive geartooth sensor with dual peak detectors and true power on capability 有权具有双峰值检测器和真正上电能力的自适应齿轮传感器公开(公告)号：US06967477B1
公开(公告)日：2005-11-22
申请号：US11003845
申请日：2004-12-02
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。
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公开(公告)号：US06297628B1
公开(公告)日：2001-10-02
申请号：US09270715
申请日：1999-03-17
IPC分类号： G01B714
CPC分类号： G01D5/145
摘要： An interleaved parallel MR bridge array is optimized for sensing fine pitch ring magnets and can be utilized to reduce ring magnet target size for wheel speed sensing applications.
摘要翻译： 交错的并行MR桥阵列被优化用于感测细间距环形磁体，并且可用于减小用于车轮速度感测应用的环形磁铁目标尺寸。
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