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公开(公告)号：EP2447674A1
公开(公告)日：2012-05-02
申请号：EP10792043.1
申请日：2010-06-21
发明人： KAWAHATA, Ken
CPC分类号： G01R33/09 , B82Y25/00 , G01D5/2451 , G01R33/093
摘要： An object of the invention is to provide a magnetic detection device capable of achieving a small circuit structure and high detection accuracy, as compared to the related art.
An embodiment of the invention provides a bridge circuit including magnetic detection elements whose magnetic characteristics are changed by an external magnetic field. Two output portions are provided at an intermediate point of each series circuit of the bridge circuit. A resistive unit 25 is connected between a first output portion a1 which is provided on the side of an input terminal Vdd of one series circuit and a second output portion a2 which is provided on the side of a ground terminal GND of the one series circuit and a resistive unit 26 is connected between a third output portion 3a which is provided on the side of the input terminal Vdd of the other series circuit and a fourth output portion a4 which is provided on the side of the ground terminal GND of the other series circuit. The first output portion and the fourth output portion are connected to a first comparator 30, and the second output portion and the third output portion are connected to a second comparator 31.摘要翻译： 本发明的目的是提供一种与现有技术相比能够实现小电路结构和高检测精度的磁检测装置。 本发明的实施例提供了一种桥式电路，其包括磁性检测元件，其磁特性由外部磁场改变。 在桥式电路的每个串联电路的中间点设置两个输出部分。 电阻单元25连接在设置在一个串联电路的输入端子Vdd侧的第一输出部分a1和设置在一个串联电路的接地端子GND侧的第二输出部分a2之间， 电阻单元26连接在设置在另一串联电路的输入端子Vdd侧的第三输出部分3a和设置在另一串联电路的接地端子GND侧的第四输出部分a4之间 。 第一输出部分和第四输出部分连接到第一比较器30，第二输出部分和第三输出部分连接到第二比较器31。
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公开(公告)号：EP2447674B1
公开(公告)日：2018-09-26
申请号：EP10792043.1
申请日：2010-06-21
发明人： KAWAHATA, Ken
CPC分类号： G01R33/09 , B82Y25/00 , G01D5/2451 , G01R33/093
摘要： An object of the invention is to provide a magnetic detection device capable of achieving a small circuit structure and high detection accuracy, as compared to the related art. An embodiment of the invention provides a bridge circuit including magnetic detection elements whose magnetic characteristics are changed by an external magnetic field. Two output portions are provided at an intermediate point of each series circuit of the bridge circuit. A resistive unit 25 is connected between a first output portion a1 which is provided on the side of an input terminal Vdd of one series circuit and a second output portion a2 which is provided on the side of a ground terminal GND of the one series circuit and a resistive unit 26 is connected between a third output portion 3a which is provided on the side of the input terminal Vdd of the other series circuit and a fourth output portion a4 which is provided on the side of the ground terminal GND of the other series circuit. The first output portion and the fourth output portion are connected to a first comparator 30, and the second output portion and the third output portion are connected to a second comparator 31.
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