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Three axis sensor package on flexible substrate

  • US 6,169,254 B1
  • Filed: 07/20/1994
  • Issued: 01/02/2001
  • Est. Priority Date: 07/20/1994
  • Status: Expired due to Term
First Claim
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1. Apparatus having electrical connections to a plurality of sensor devices for sensing magnetic field components in a plurality of directions, with each said sensing device having a length, a width, a diagonal, and a sensing direction lying in a plane of each said sensing device, comprising:

  • an elongated flexible tape having a first surface, a second surface parallel to said first surface and conductors;

    a substrate having a shape and stiffness greater than the stiffness of said flexible tape, a portion of said first surface secured to said substrate and conforming to at least a portion of said shape with a first portion of said second surface lying in a first plane which includes a desired first sensing direction;

    a first sensor device mounted to said first portion;

    a second portion of said second surface lying in a second plane which includes a desired second sensing direction, said second plane perpendicular to said first plane;

    a second sensor device mounted to said second portion; and

    means for making said electrical connections between said sensor devices and said conductors, wherein the apparatus is configured to be inserted into an elongated passageway having a diameter smaller than an inch, wherein the diagonal of the sensor device is larger than the diameter of the passageway, and wherein the apparatus is formed in a device which is adapted to be movable in an induced magnetic field, thereby enabling the plurality of sensor devices to sense the magnetic field components.

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