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    • 1. 发明授权
    • Magnetic sensor and magnetic measurement method
    • 磁传感器和磁测量方法
    • US08278920B2
    • 2012-10-02
    • US12542103
    • 2009-08-17
    • Miho MochizukiToru Takeda
    • Miho MochizukiToru Takeda
    • G01R33/06
    • G01R33/07
    • For a Hall element of a magnetic sensor, a current is caused to pass along a +X-direction and a first voltage is measured in a +Y-direction, a current is caused to pass along the +Y-direction and a second voltage is measured in the +X-direction, a current is caused to pass along a −X-direction and a third voltage is measured in the +Y-direction, and a current is caused to pass along a −Y-direction and a fourth voltage is measured in the +X-direction. Then, a calculation is performed which strengthens effects of Hall voltage mutually and weakens effects of offset voltage mutually based on a value of the first voltage and a value of the second voltage, and the result is compared with a reference value. Furthermore, a calculation is performed which strengthens effects of Hall voltage mutually and weakens effects of offset voltage mutually based on a value of the third voltage and a value of the fourth voltage, and the result is compared with the reference value.
    • 对于磁传感器的霍尔元件,使电流沿+ X方向通过,并且在+ Y方向上测量第一电压,使电流沿+ Y方向通过,并且将第二电压 在+ X方向上测量,使电流沿-X方向通过,并且在+ Y方向上测量第三电压,并且使电流沿着-Y方向和第四 电压在+ X方向测量。 然后,进行相互加强霍尔电压的影响的计算,并且基于第一电压的值和第二电压的值相互抵消偏移电压的影响,并将结果与​​基准值进行比较。 此外,进行相互加强霍尔电压的影响的计算,并且基于第三电压的值和第四电压的值相互抵消偏移电压的影响,并将结果与​​基准值进行比较。
    • 2. 发明申请
    • MAGNETIC SENSOR AND MAGNETIC MEASUREMENT METHOD
    • 磁传感器和磁性测量方法
    • US20100052671A1
    • 2010-03-04
    • US12542103
    • 2009-08-17
    • Miho MochizukiToru Takeda
    • Miho MochizukiToru Takeda
    • G01R33/06
    • G01R33/07
    • For a Hall element of a magnetic sensor, a current is caused to pass along a +X-direction and a first voltage is measured in a +Y-direction, a current is caused to pass along the +Y-direction and a second voltage is measured in the +X-direction, a current is caused to pass along a −X-direction and a third voltage is measured in the +Y-direction, and a current is caused to pass along a −Y-direction and a fourth voltage is measured in the +X-direction. Then, a calculation is performed which strengthens effects of Hall voltage mutually and weakens effects of offset voltage mutually based on a value of the first voltage and a value of the second voltage, and the result is compared with a reference value. Furthermore, a calculation is performed which strengthens effects of Hall voltage mutually and weakens effects of offset voltage mutually based on a value of the third voltage and a value of the fourth voltage, and the result is compared with the reference value.
    • 对于磁传感器的霍尔元件,使电流沿+ X方向通过,并且在+ Y方向上测量第一电压,使电流沿+ Y方向通过,并且将第二电压 在+ X方向上测量,使电流沿-X方向通过,并且在+ Y方向上测量第三电压,并且使电流沿着-Y方向和第四 电压在+ X方向测量。 然后,进行相互加强霍尔电压的影响的计算,并且基于第一电压的值和第二电压的值相互抵消偏移电压的影响,并将结果与​​参考值进行比较。 此外,进行相互加强霍尔电压的影响的计算,并且基于第三电压的值和第四电压的值相互抵消偏移电压的影响,并将结果与​​基准值进行比较。