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Volumetric measurement device, system and method

  • US 9,372,104 B2
  • Filed: 03/07/2013
  • Issued: 06/21/2016
  • Est. Priority Date: 03/07/2012
  • Status: Active Grant
First Claim
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1. An acoustic volume sensing device comprising:

  • a housing comprising a reference volume chamber and a variable volume chamber, the reference volume chamber and the variable volume chamber connected by a resonant port;

    a first MEMS microphone located in acoustic relation to the variable volume chamber;

    a second MEMS microphone located in acoustic relation to the reference volume chamber;

    a MEMS speaker located in acoustic relation to the reference volume chamber; and

    a circuit board in electric connection with the first and second MEMS microphones and the MEMS speaker,wherein the device configured to measure a volume of fluid using acoustic volume sensing measurements, andwherein the measurements are taken at the same pressure.

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