公开(公告)号：US10386180B2

公开(公告)日：2019-08-20

申请号：US15361639

申请日：2016-11-28

Applicant: Honeywell International Inc.

Inventor： Sebastien Tixier ,  Johan Backstrom ,  Iouri Markevitch ,  Ian Baron

IPC: G01B21/08 ,  G01F22/00 ,  G01F23/284 ,  G01S13/88 ,  G01S7/292 ,  G01S7/41 ,  G06Q10/08

Abstract: An apparatus includes a transmitter configured to transmit a signal including an electromagnetic pulse towards material in a tank. The apparatus also includes a receiver configured to receive a signal including multiple reflections of the pulse. The apparatus further includes at least one processing device configured to process the received signal and determine a measurement associated with the material in the tank. To process the received signal, the at least one processing device is configured to fit multiple models onto the received signal, select one of the models, identify at least one of the multiple reflections in the received signal using the selected model, and determine the measurement using the at least one identified reflection in the received signal. Each model is constructed from a superposition of multiple types of pulse reflections.

公开(公告)号：US10180342B2

公开(公告)日：2019-01-15

申请号：US14859694

申请日：2015-09-21

Applicant: Honeywell International Inc.

Inventor： Johan Backstrom ,  Sarabjit Singh ,  Iouri Markevitch ,  Stephane Savard ,  Michael Kon Yew Hughes ,  Frank Martin Haran

IPC: G01F23/284 ,  G01F23/296 ,  G01S7/292 ,  G01S7/527 ,  G01S13/88 ,  G01S15/88 ,  G01S7/486

Abstract: A method of level finding includes providing characteristics of a shape of a transmitted pulse in time domain launched onto a waveguide into a tank having at least one material therein, physical properties of the waveguide and real and imaginary dielectric characteristics of the material at a frequency of the pulse. A level finding algorithm having a coarse search and a fine search is implemented, where the coarse search minimizes a prediction error between an echo signal (echo curve y(k)) and a sampled pulse model echo p(k) to obtain an objective function J(k) in a vicinity of a minimum prediction error (k*). The fine search calculates at least one minimum or maximum using J(k) in the vicinity of k*. The minimum or the maximum corresponds to a level of the material or an interface involving the material.

公开(公告)号：US10145939B2

公开(公告)日：2018-12-04

申请号：US15053648

申请日：2016-02-25

Applicant: Honeywell International Inc.

Inventor： Johan Backstrom

IPC: G01S13/88 ,  G01S7/40 ,  G01F23/284

Abstract: A method of simulating a pulsed radar gauge (PRG) on a tank. Provided are (i) a parametrized model of an echo reflection responsive to a transmitted radar pulse defined by an initial spatial model function, a first signal model modeling the pulse traveling through the media, and a second signal model modeling reflection and transmission of the pulse striking boundaries involving the media, and an (ii) echo curve calculation (ECC) program. The ECC program divides the signal path into path components for the pulse using the first and second signal model together as a recursive program with stop conditions to indicate an end result for the path components when taken together for reflected signals reaching the transceiver include locations of reflections and respective amplitudes. A shape of the initial model is placed at reflection locations using their respective amplitudes applied to size their amplitude to generate a simulated echo curve.

公开(公告)号：US20180149474A1

公开(公告)日：2018-05-31

申请号：US15361639

申请日：2016-11-28

Applicant: Honeywell International Inc.

Inventor： Sebastien Tixier ,  Johan Backstrom ,  Iouri Markevitch ,  Ian Baron

IPC: G01B21/08 ,  G06Q10/08

CPC classification number: G01B21/08 ,  G01F22/00 ,  G01F23/284 ,  G01S7/2921 ,  G01S7/412 ,  G01S13/88 ,  G06Q10/087

Abstract: An apparatus includes a transmitter configured to transmit a signal including an electromagnetic pulse towards material in a tank. The apparatus also includes a receiver configured to receive a signal including multiple reflections of the pulse. The apparatus further includes at least one processing device configured to process the received signal and determine a measurement associated with the material in the tank. To process the received signal, the at least one processing device is configured to fit multiple models onto the received signal, select one of the models, identify at least one of the multiple reflections in the received signal using the selected model, and determine the measurement using the at least one identified reflection in the received signal. Each model is constructed from a superposition of multiple types of pulse reflections.