公开(公告)号：US10539443B2

公开(公告)日：2020-01-21

申请号：US15759957

申请日：2016-07-05

Applicant: The Trustees of Princeton University ,  Marcus Hultmark ,  Clay Byers ,  Matthew Fu ,  Yuyang Fan

Inventor： Marcus Hultmark ,  Clay Byers ,  Matthew Fu ,  Yuyang Fan

IPC: G01F1/28 ,  G01F1/20 ,  G01F1/684 ,  G01F1/698 ,  G01P5/02 ,  A61B5/0285

Abstract: Disclosed is an apparatus for measuring velocity of a fluid stream via deflection of a wire filament. Also disclosed is a process for measuring velocity of a fluid stream, requiring deflecting two or more wire filaments in a fluid stream, measuring two or more resistances, and equating the velocity of the fluid stream to the result of a function of the two or more resistances. In both the apparatus and method, one wire filament must have a length dimension longer than at least one of a dimension of the wire filament in the primary sensing or transverse direction, as well as a dimension of the wire filament in the primary sensing and/or transverse direction less than 50 ⁢ μ U ⁢ ⁢ ρ throughout a predetermined operating range.

公开(公告)号：US11054290B2

公开(公告)日：2021-07-06

申请号：US16737442

申请日：2020-01-08

Applicant: The Trustees of Princeton University

Inventor： Marcus Hultmark ,  Clay Byers ,  Matthew Fu ,  Yuyang Fan

IPC: G01F1/28 ,  G01F1/698 ,  G01F1/20 ,  G01F1/684 ,  G01P5/02 ,  A61B5/0285

Abstract: Disclosed is an apparatus for measuring velocity of a fluid stream via deflection of a wire filament. Also disclosed is a process for measuring velocity of a fluid stream, requiring deflecting two or more wire filaments in a fluid stream, measuring two or more resistances, and equating the velocity of the fluid stream to the result of a function of the two or more resistances. In both the apparatus and method, one wire filament must have a length dimension longer than at least one of a dimension of the wire filament in the primary sensing or transverse direction, as well as a dimension of the wire filament in the primary sensing and/or transverse direction less than 50 ⁢ ⁢ μ U ⁢ ⁢ ρ throughout a predetermined operating range.

公开(公告)号：US11351313B2

公开(公告)日：2022-06-07

申请号：US16487949

申请日：2018-02-22

Applicant: The Trustees of Princeton University

Inventor： Marcus Hultmark ,  Yuyang Fan ,  Clay Byers ,  Matthew Fu

IPC: A61M5/48 ,  G01F1/34 ,  G01F22/02 ,  G01F25/10

Abstract: A system and method for monitoring the pressure of an injection site, utilizing a fluid operating in the laminar regime flowing through a calibrated tube, and measuring a pressure at one end of the calibrated tube with a pressure sensor, as well as a fluid velocity with a flow sensor, such as an elastic filament velocimeter, that comprises a nano-scale sensing element. Additional elements may be utilized, including the use of data acquisition units, processors, user interfaces, pumps, syringes, and control loops.

公开(公告)号：US11187715B2

公开(公告)日：2021-11-30

申请号：US16485986

申请日：2018-02-14

Applicant: The Trustees of Princeton University

Inventor： Yuyang Fan ,  Marcus Hultmark ,  Matt Fu ,  Clay Byers

IPC: G01P5/12 ,  G01P1/00

Abstract: A system and method for measuring multiple velocity components with a single wire, by alternating current through the wire at a sufficiently high frequency, where the first current allows measurement of a first velocity component, and the second current allows measurement of a second velocity component. The resolution of the measurements can be adjusted by altering the frequency at which the current is alternated.