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Flux-gate magnetometer with drive signal for reducing effects of electromagnetic interference

  • US 6,268,725 B1
  • Filed: 04/29/1998
  • Issued: 07/31/2001
  • Est. Priority Date: 04/29/1998
  • Status: Expired due to Fees
First Claim
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1. A flux-gate magnetometer device for use in measuring an external magnetic field for providing measurement output, the device comprising:

  • at least one flux-gate sensor, a drive signal generator including means for dividing the frequency of the drive signal by two, resulting in a frequency divided drive signal and a non-frequency divided drive signal;

    means for applying the frequency divided drive signal to at least one flux-gate signal;

    translation means including means for controlling the inversion of the at least one sensor output signal based on the non-frequency divided drive signal resulting in a translated signal; and

    means for filtering the translated signal to provide the measurement output.

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