公开(公告)号：US20200209044A1

公开(公告)日：2020-07-02

申请号：US16616406

申请日：2018-05-22

Applicant: Stream Dx, Inc

Inventor： Brian Holt ,  Scott McClellan ,  Alvin Y. Le ,  Kent Ogden

IPC: G01F23/26 ,  A61B5/20 ,  G01F1/56 ,  G01N33/493

Abstract: A printed circuit board device includes: a first capacitive sensor configured to measure a first capacitance within a contained volume having known dimensions, wherein the first capacitance changes as a substance is received into the contained volume; a second capacitive sensor having a plurality of trigger points at a plurality of corresponding known heights within the contained volume, the second capacitive sensor configured to detect when the substance received into the contained volume has reached each of the corresponding known heights within the contained volume; and wherein at least one of a level of the substance within the contained volume, a volume of the substance within the contained volume, or a flow rate of the substance into the contained volume is determined based on data from the first capacitive sensor and the second capacitive sensor.

公开(公告)号：US11473958B2

公开(公告)日：2022-10-18

申请号：US16616406

申请日：2018-05-22

Applicant: Stream Dx, Inc

Inventor： Brian Holt ,  Scott McClellan ,  Alvin Y. Le ,  Kent Ogden

IPC: G01F23/263 ,  A61B5/20 ,  G01F1/56 ,  G01N33/493

Abstract: A printed circuit board device includes: a first capacitive sensor configured to measure a first capacitance within a contained volume having known dimensions, wherein the first capacitance changes as a substance is received into the contained volume; a second capacitive sensor having a plurality of trigger points at a plurality of corresponding known heights within the contained volume, the second capacitive sensor configured to detect when the substance received into the contained volume has reached each of the corresponding known heights within the contained volume; and wherein at least one of a level of the substance within the contained volume, a volume of the substance within the contained volume, or a flow rate of the substance into the contained volume is determined based on data from the first capacitive sensor and the second capacitive sensor.