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ARRANGEMENT COMPRISING AN INDUCTIVE PROXIMITY SENSOR, AND METHOD IMPLEMENTING SUCH A SENSOR

  • US 20120303305A1
  • Filed: 06/13/2012
  • Published: 11/29/2012
  • Est. Priority Date: 12/15/2009
  • Status: Active Grant
First Claim
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1. Method implementing an inductive type proximity sensor for detecting a transition in a target in front of said sensor, including the following steps:

  • generating by means of an excitation coil a magnetic signal directed towards said target;

    obtaining a first differential inductive signal with a first pair of detection coils and of a second differential inductive signal with a second pair of detection coils that are phase-shifted relative to said first pair, wherein said differential inductive signals depend on the voltages induced in said detection coils, wherein said induced voltages depend on the position of said target;

    detecting one said transition at the instant when the difference between said first differential inductive signal and said second differential inductive signal reaches a predetermined threshold value.

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