公开(公告)号：US20210140864A1

公开(公告)日：2021-05-13

申请号：US17092357

申请日：2020-11-09

Applicant: ABB Schweiz AG

Inventor： Gerrit HELD ,  Stefano MARANO ,  Miklos LENNER ,  Frank KASSUBEK

IPC: G01N9/24 ,  G01N9/26 ,  G01F23/296

Abstract: A measurement system for determining a density ρ or a compressibility κ of a liquid medium in a vessel includes: at least one pressure sensor for measuring a hydrostatic pressure Δp of the liquid medium as a measured hydrostatic pressure Δp; at least one ultrasound sensor for measuring a first time of flight t1 along a first propagation path comprising a point at a level surface of the liquid medium, and for measuring a second time of flight t2 along a second propagation path, which is different from the first propagation path; and a control unit for determining the density ρ or the compressibility κ of the liquid medium based on the measured hydrostatic pressure Δp, the first time of flight t1, and the second time of flight t2.

公开(公告)号：US20210078040A1

公开(公告)日：2021-03-18

申请号：US17016399

申请日：2020-09-10

Applicant: ABB Schweiz AG

Inventor： Frank KASSUBEK ,  Miklos LENNER ,  Stefano MARANO ,  Gerrit HELD

IPC: B06B1/06 ,  G01F23/296 ,  H01L41/08 ,  H01L41/18 ,  H01L41/37

Abstract: An ultrasonic Lamb wave transducer for non-invasive measurement and for emitting and/or receiving an ultrasonic Lamb wave pulse, an emission and a reception of the ultrasonic Lamb wave having an emission direction and a reception direction, respectively, the ultrasonic Lamb wave pulse being defined by at least one parameter, includes: at least one piezocomposite actuator for controlling the emission direction of the ultrasonic Lamb wave by emitting acoustic radiation at frequencies that are appropriate for generating ultrasonic Lamb waves.

公开(公告)号：US20210140927A1

公开(公告)日：2021-05-13

申请号：US17093666

申请日：2020-11-10

Applicant: ABB Schweiz AG

Inventor： Frank KASSUBEK ,  Miklos LENNER ,  Stefano MARANO ,  Gerrit HELD

IPC: G01N29/06 ,  G01N29/34

Abstract: A measurement system for measuring an inhomogeneity of a medium in a vessel includes: a first ultrasound emitter for sending a first ultrasound signal along a first path; a second ultrasound emitter for sending a second ultrasound signal along a second path different from the first path; a first ultrasound receiver for receiving the first ultrasound signal and measuring a first measurement parameter p1 of the received first ultrasound signal; a second ultrasound receiver for receiving the second ultrasound signal and measuring a second measurement parameter p2 of the received second ultrasound signal; and a control unit: receives the first measurement parameter p1 from the first ultrasound receiver, receives the second measurement parameter p2 from the second ultrasound receiver, and determines a ratio p1/p2 of the first measurement parameter p1 to the second measurement parameter p2.

公开(公告)号：US20210140923A1

公开(公告)日：2021-05-13

申请号：US17092346

申请日：2020-11-09

Applicant: ABB Schweiz AG

Inventor： Miklos LENNER ,  Frank KASSUBEK ,  Stefano MARANO ,  Gerrit HELD

IPC: G01N29/04 ,  G01N29/07 ,  G01N29/28

Abstract: A signal processing unit configured to: cause a first ultrasound emitter, when attached to a wall of a vessel, to emit a first ultrasound test signal; receive, from at least one ultrasound receiver, when attached to the wall of the vessel, the first ultrasound test signal; detect a time of flight of the received first ultrasound test signal; and determine that an acoustic coupling of the first ultrasound emitter and a first ultrasound receiver of the at least one ultrasound receiver to the wall of the vessel is intact if the detected time of flight corresponds to a length of a path in the wall of the vessel from the first ultrasound emitter to the at least one ultrasound receiver.