×

Magnetic 3D Sensor Calibratable During Measurement Operation

  • US 20120016614A1
  • Filed: 06/27/2007
  • Published: 01/19/2012
  • Est. Priority Date: 08/09/2006
  • Status: Active Grant
First Claim
Patent Images

1. A magnetic field sensor calibratable during measurement operation for detecting first, second, and third spatial components Bz, By and Bx of a magnetic field at a reference point, wherein the magnetic field comprises first, second, and third measurement field components BMz, BMy and BMx, and/or first, second, and third calibration field components BKz, BKy and BKx, comprising:

  • a first sensor element arrangement for detecting the first magnetic field component Bz comprising a first measurement field component BMz and/or a first calibration field component BKz, with respect to a first spatial axis z at the reference point;

    a second sensor element arrangement for detecting the second magnetic field component By comprising a second measurement field component BMy and/or a second calibration field component BKy, with respect to a second spatial axis y at the reference point;

    a third sensor element arrangement for detecting the third magnetic field component Bx comprising a third measurement field component BMx and/or a third calibration field component BKx, with respect to a third spatial axis x at the reference point; and

    an excitation line arranged such with respect to the first, second, and third sensor element arrangements that when impressing a predetermined current into the excitation line, a first predetermined calibration field component BKz with respect to the first spatial axis x in the first sensor element arrangement is generated, a second predetermined calibration field component BKy with respect to the second spatial axis y in the second sensor element arrangement is generated, and a third predetermined calibration field component BKx with respect to the third spatial axis x in the third sensor element arrangement is generated, wherein the three spatial axes z, y, and x run along linearly independent position vectors.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×