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Interdigitated, full wheatstone bridge flow sensor transducer

  • US 20070204688A1
  • Filed: 03/01/2006
  • Published: 09/06/2007
  • Est. Priority Date: 03/01/2006
  • Status: Active Grant
First Claim
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1. A sensor apparatus, comprising:

  • a heating element comprising an upstream side and a downstream side;

    a first heat sensing set configured adjacent to the upstream side of the heating element and comprising a first sensing element and a second sensing element, the first and second sensing elements configured in a serpentine, interdigitated pattern; and

    a second heat sensing set configured adjacent to the downstream side of the heating element and comprising a third sensing element and a fourth sensing element, the third and fourth sensing elements configured in a serpentine, interdigitated pattern, wherein the first heat sensing element is coupled to the third sensing element to form one half of a Wheatstone bridge and wherein the second heat sensing element is coupled to the fourth sensing element to form a second half of the Wheatstone bridge.

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