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    • 8. 发明申请
    • MAGNETIC SENSOR DEVICE WITH REFERENCE UNIT
    • 具有参考单元的磁传感器装置
    • WO2007088502A2
    • 2007-08-09
    • PCT/IB2007/050254
    • 2007-01-25
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.DURIC, Haris
    • DURIC, Haris
    • G01N27/745G01N35/0098G01R33/12
    • The invention relates to a magnetic sensor device comprising excitation wires (11, 13) for generating a magnetic field (B) in a sample chamber (1) and a magnetic sensor element (12), for example a GMR element, for sensing magnetic fields generated by magnetic particles (2) in the sample chamber. The device further comprises a reference field generator consisting of a linear conductor (14) and a planar conductor (15) between which the magnetic sensor element (12) is disposed. The magnetic reference field (B ref ) generated by said conductors (14, 15) does not penetrate into the sample chamber (1) but reaches only the magnetic sensor element (12). Components of the sensor signal which are due to the magnetic reference field (B ref ) can therefore be separated and used to calculate the sensor gain. This value can for example be used for an auto-calibration of the device during a measurement.
    • 本发明涉及一种磁传感器装置,其包括用于在样品室(1)中产生磁场(B)的激励线(11,13)和用于感测磁场的磁传感器元件(12),例如GMR元件 由样品室中的磁性颗粒(2)产生。 该装置还包括由直线导体(14)和平面导体(15)组成的参考场发生器,在该平面导体之间布置有磁性传感器元件(12)。 由所述导体(14,15)产生的磁参考场(B SUB)不会渗透到样品室(1)中,而仅仅到达磁传感器元件(12)。 因此,由于磁参考场(B< ref<<<>)导致的传感器信号的部件因此可以被分离并用于计算传感器增益。 该值可以例如用于测量期间设备的自动校准。