Volumetric measurement device, system and method
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United States of America Patent
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Jun 21, 2016
Grant Date -
Mar 27, 2014
app pub date -
Mar 7, 2013
filing date -
Mar 7, 2012
priority date (Note) -
In Force
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Abstract
An acoustic volume sensing device is disclosed. The device includes 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.
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