公开(公告)号：US07205761B2

公开(公告)日：2007-04-17

申请号：US11076874

申请日：2005-03-11

申请人： Manabu Tsukamoto ,  Takaaki Murakami ,  Yuji Ariyoshi ,  Takahiro Ohnakado ,  Yasuhiro Kosasayama

发明人： Manabu Tsukamoto ,  Takaaki Murakami ,  Yuji Ariyoshi ,  Takahiro Ohnakado ,  Yasuhiro Kosasayama

IPC分类号： G01P3/44 ,  G01B7/30 ,  G08B21/00

CPC分类号： G01D5/145 ,  G01D5/2451

摘要： A rotation state detecting device capable of detecting the direction of rotation of a rotating body includes first and second bridge circuits made up of magneto-resistance effect elements, a first comparator for detecting the increasing/decreasing direction of the center point voltage of the first bridge circuit, a second comparator for detecting the increasing/decreasing direction of the center point voltage of the second bridge circuit, a third comparator for detecting the difference between the center point voltage of the first bridge circuit and the center point voltage of the second bridge circuit, and logic value information deriving means for outputting “1” when the logic values of the outputs of the first comparator and the second comparator are both “1”, outputting “0” when they are both “0”, and continuing to output the previous value at other times, the direction of rotation of the rotating body being determined on the basis of a combination of the outputs of the first, second and third comparators and the logic value information deriving means.

摘要翻译： 能够检测旋转体的旋转方向的旋转状态检测装置包括由磁阻效应元件构成的第一和第二桥接电路，用于检测第一桥的中心点电压的增减方向的第一比较器 电路，用于检测第二桥接电路的中心点电压的增加/减少方向的第二比较器，用于检测第一桥接电路的中心点电压与第二桥接电路的中心点电压之间的差的第三比较器 以及当第一比较器和第二比较器的输出的逻辑值都为“1”时输出“1”的逻辑值信息导出装置，当它们均为“0”时输出“0”，并且继续输出 在其他时刻的先前值，旋转体的旋转方向基于第一，第二的输出的组合来确定 nd和第三比较器以及逻辑值信息导出装置。

公开(公告)号：US20050206371A1

公开(公告)日：2005-09-22

申请号：US11076874

申请日：2005-03-11

申请人： Manabu Tsukamoto ,  Takaaki Murakami ,  Yuji Ariyoshi ,  Takahiro Ohnakado ,  Yasuhiro Kosasayama

发明人： Manabu Tsukamoto ,  Takaaki Murakami ,  Yuji Ariyoshi ,  Takahiro Ohnakado ,  Yasuhiro Kosasayama

IPC分类号： G01P3/488 ,  G01B7/14 ,  G01B7/30 ,  G01D5/12 ,  G01D5/14 ,  G01D5/16 ,  G01D5/244 ,  G01D5/245 ,  G01P13/04 ,  G01R33/06

CPC分类号： G01D5/145 ,  G01D5/2451

摘要： A rotation state detecting device capable of detecting the direction of rotation of a rotating body includes first and second bridge circuits made up of magneto-resistance effect elements, a first comparator for detecting the increasing/decreasing direction of the center point voltage of the first bridge circuit, a second comparator for detecting the increasing/decreasing direction of the center point voltage of the second bridge circuit, a third comparator for detecting the difference between the center point voltage of the first bridge circuit and the center point voltage of the second bridge circuit, and logic value information deriving means for outputting “1” when the logic values of the outputs of the first comparator and the second comparator are both “1”, outputting “0” when they are both “0”, and continuing to output the previous value at other times, the direction of rotation of the rotating body being determined on the basis of a combination of the outputs of the first, second and third comparators and the logic value information deriving means.

摘要翻译： 能够检测旋转体的旋转方向的旋转状态检测装置包括由磁阻效应元件构成的第一和第二桥接电路，用于检测第一桥的中心点电压的增减方向的第一比较器 电路，用于检测第二桥接电路的中心点电压的增加/减少方向的第二比较器，用于检测第一桥接电路的中心点电压与第二桥接电路的中心点电压之间的差的第三比较器 以及当第一比较器和第二比较器的输出的逻辑值都为“1”时输出“1”的逻辑值信息导出装置，当它们均为“0”时输出“0”，并且继续输出 在其他时刻的先前值，旋转体的旋转方向基于第一，第二的输出的组合来确定 nd和第三比较器以及逻辑值信息导出装置。