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1. 发明申请

US20110260724A1 MAGNETIC DETECTION APPARATUS 有权
标题翻译：磁性检测装置
公开(公告)号：US20110260724A1
公开(公告)日：2011-10-27
申请号：US12907599
申请日：2010-10-19
申请人： Yoshinori TATENUMA , Hideki SHIMAUCHI , Masahiro YOKOTANI , Yuji KAWANO , Hiroshi KOBAYASHI , Kazuyasu NISHIKAWA , Manabu TSUKAMOTO
发明人： Yoshinori TATENUMA , Hideki SHIMAUCHI , Masahiro YOKOTANI , Yuji KAWANO , Hiroshi KOBAYASHI , Kazuyasu NISHIKAWA , Manabu TSUKAMOTO
IPC分类号： G01R33/02
CPC分类号： G01D5/2448 , G01P3/42 , G01P3/481 , G01P3/488
摘要： A magnetic detection apparatus includes a first comparison circuit that waveform-shapes the amplitude of a detection signal from magneto-electric transducers by DC coupling, a third comparison circuit that waveform-shapes the detection signal by AC coupling, an oscillation circuit having a natural frequency, a control circuit that counts the output of the first comparison circuit by using the oscillation means, and a selection circuit that selects the output of the first comparison means and the output of the second comparison means. The control circuit counts rising from the next rising or falling from the next falling of an output rectangular wave of the first comparison circuit, and provides output to the selection circuit at the time point at which the count value reaches a desired value. The selection circuit selects and outputs the output rectangular wave of the first comparison circuit or the third comparison circuit.
摘要翻译：磁检测装置包括：第一比较电路，其通过DC耦合对来自磁电换能器的检测信号的振幅进行波形整形;第三比较电路，其通过AC耦合对检测信号进行波形整形;具有固有频率的振荡电路控制电路，其通过使用振荡装置对第一比较电路的输出进行计数，以及选择电路，其选择第一比较装置的输出和第二比较装置的输出。控制电路从第一比较电路的输出矩形波的下一个下降沿开始下一个上升或下降，并且在计数值达到期望值的时间点向选择电路提供输出。选择电路选择并输出第一比较电路或第三比较电路的输出矩形波。

2. 发明申请

US20090302833A1 MAGNETIC DETECTION APPARATUS 有权
标题翻译：磁性检测装置
公开(公告)号：US20090302833A1
公开(公告)日：2009-12-10
申请号：US12277691
申请日：2008-11-25
申请人： Yuji KAWANO , Hiroshi KOBAYASHI , Yoshinori TATENUMA , Masahiro YOKOTANI
发明人： Yuji KAWANO , Hiroshi KOBAYASHI , Yoshinori TATENUMA , Masahiro YOKOTANI
IPC分类号： G01B7/14 , G01B7/30
CPC分类号： G01P13/045 , G01D11/245 , G01P3/487
摘要： In a magnetic detection apparatus, a magnetic detection sensor generates a sensor output signal whose high level and low level have different potentials in accordance with the moving direction of a magnetic moving object, and a computer unit includes three comparator circuits and detects the output signal of the magnetic detection sensor with three levels of comparison threshold values, so that the moving direction of the magnetic moving object can be detected accurately without any delay.
摘要翻译：在磁检测装置中，磁检测传感器根据磁性运动物体的移动方向产生高电平和低电平具有不同电位的传感器输出信号，并且计算机单元包括三个比较电路，并检测输出信号具有三级比较阈值的磁检测传感器，使得能够准确地检测磁性移动物体的移动方向而没有任何延迟。

3. 发明申请

US20110101965A1 MAGNETIC DETECTION DEVICE 有权
标题翻译：磁性检测装置
公开(公告)号：US20110101965A1
公开(公告)日：2011-05-05
申请号：US12774786
申请日：2010-05-06
申请人： Hideki SHIMAUCHI , Hiroshi KOBAYASHI , Yuji KAWANO , Yoshinori TATENUMA
发明人： Hideki SHIMAUCHI , Hiroshi KOBAYASHI , Yuji KAWANO , Yoshinori TATENUMA
IPC分类号： G01B7/14
CPC分类号： G01D5/145 , G01D5/24476 , G01D5/2451
摘要： A magnetic detection device includes a signal processing circuit that detects a moving position and a moving direction of a magnetic mobile object using an output of a comparing circuit configured to output a signal by comparing an output signal of a magneto-electric transducer element with a threshold. A duration during which an output of the signal processing circuit is in a high level or in a low level is fixed to a period t1 or a period t2 depending on the moving direction of the magnetic mobile object. When switching of the moving direction of the magnetic mobile object takes place within the period t1 or the period t2, the signal processing circuit outputs a position signal same as a position signal indicating a position immediately before the switching of the moving direction of the magnetic mobile object due to hysteresis of the threshold of the comparing circuit.
摘要翻译：磁检测装置包括：信号处理电路，其使用比较电路的输出来检测磁性移动体的移动位置和移动方向，该比较电路被配置为通过将磁电换能器元件的输出信号与阈值进行比较来输出信号。信号处理电路的输出处于高电平或低电平的持续时间根据磁性移动体的移动方向固定为周期t1或周期t2。当磁性移动物体的移动方向在时间段t1或周期t2内进行切换时，信号处理电路输出与表示磁性移动体的移动方向切换前的位置相同的位置信号对象由于比较电路的阈值滞后。

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