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公开(公告)号：US10718861B2
公开(公告)日：2020-07-21
申请号：US15711591
申请日：2017-09-21
Applicant: Hach Company
Inventor： David L. Rick
IPC: G01S13/58 , G01S13/10 , H04B1/69 , G01S17/32 , G01S13/34 , G01S13/88 , G01F23/284 , G01S7/4913 , G01S7/536 , G01S7/4911 , G01S7/35 , G01S15/32 , G01S17/58 , G01S15/88 , G01S15/58 , G01S17/88 , G01F23/296
Abstract: A method for constructing a frequency profile of an emitted signal suitable for use in a non-contact ranging system with multi-scale spectral analysis includes determining N stepped frequency chirps, wherein each frequency chirp of the N stepped frequency chirps has a linear FM modulation of predetermined bandwidth and slope, and wherein a starting frequency for each of the plurality of stepped frequency chirps is chosen so that a non-linear step profile is created which extends over a predetermined total bandwidth, sorting the plurality of N stepped frequency chirps into P sub-sequences, where P is equal to the product of decimation factors to be used in the multi-scale spectral analysis, and ordering the P sub-sequences end to end in time.
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公开(公告)号：US20180003535A1
公开(公告)日：2018-01-04
申请号：US15198911
申请日：2016-06-30
Applicant: Hach Company
Inventor： David L. Rick , Ernie Ray Paoli , Philip N. King
IPC: G01F1/66
CPC classification number: G01F1/66 , G01F1/002 , G01F1/663 , G01N29/024 , G01P5/241
Abstract: An embodiment provides a method for measuring a fluid parameter of fluid flowing in a channel, including: transmitting, using a transmitter of a device, directed energy carrying a signal toward a surface of a fluid in a fluid channel, so as to produce one or more reflections from the fluid surface; detecting, by at least one receiver of the device, one or more received signals associated with the one or more reflections so produced; and determining, based upon a measurement beam comprising characteristics of the transmitted and received signals, a fluid parameter to be measured using a processor of the device; wherein, a measurement beam characteristic is adjusted based on a distance from the device to the fluid surface. Other embodiments are described and claimed.
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公开(公告)号：US10571315B2
公开(公告)日：2020-02-25
申请号：US15711483
申请日：2017-09-21
Applicant: Hach Company
Inventor： David L. Rick
Abstract: An embodiment provides a method for measuring velocity and depth of fluid flow in a channel, including: transmitting, using a transmitter, directed energy comprising a single energy beam slant-wise toward a surface of a fluid in a fluid channel producing a plurality of reflections, wherein the transmitting comprises modulating a frequency associated with the single energy beam; detecting, at a receiver, received signals from the plurality of reflections; and determining, based upon differences between parameters of the transmitted single energy beam and parameters of the received signals, the velocity of the fluid and the depth of the fluid. Other embodiments are described and claimed.
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公开(公告)号：US20190086247A1
公开(公告)日：2019-03-21
申请号：US15711483
申请日：2017-09-21
Applicant: Hach Company
Inventor： David L. Rick
Abstract: An embodiment provides a method for measuring velocity and depth of fluid flow in a channel, including: transmitting, using a transmitter, directed energy comprising a single energy beam slant-wise toward a surface of a fluid in a fluid channel producing a plurality of reflections, wherein the transmitting comprises modulating a frequency associated with the single energy beam; detecting, at a receiver, received signals from the plurality of reflections; and determining, based upon differences between parameters of the transmitted single energy beam and parameters of the received signals, the velocity of the fluid and the depth of the fluid. Other embodiments are described and claimed.
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Patent Agency Ranking
公开(公告)号：US20180003533A1
公开(公告)日：2018-01-04
申请号：US15199249
申请日：2016-06-30
Applicant: Hach Company
Inventor： David L. Rick , Lawrence J. Scally , Dean Joseph Pizio , Ernie Ray Paoli , Philip N. King
Abstract: An embodiment provides a method for measuring velocity of fluid flow in a channel, including: transmitting, using a transmitter, directed energy carrying a signal toward a surface of a fluid in a fluid channel so as to produce a plurality reflections from locations substantially spanning the entire width of the fluid channel; detecting, using a plurality of measurement beams, received signals from the plurality of reflections so produced; determining, based upon differences between transmitted and received signals, a plurality of localized velocities; and computing, from the plurality of localized velocities, a cross-sectional average velocity of fluid in the channel. Other embodiments are described and claimed.
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公开(公告)号：US11169112B2
公开(公告)日：2021-11-09
申请号：US16428727
申请日：2019-05-31
Applicant: Hach Company
Inventor： Vishnu Rajasekharan , David L. Rick
IPC: G01N27/416 , G01N27/30
Abstract: An embodiment provides a method for measuring pH in an aqueous sample with a frit-less electrode, including: introducing an aqueous sample into a measurement device comprising at least three electrodes, wherein at least one electrode of the at least three electrodes comprises a ground rod electrode, wherein at least one electrode of the at least three electrodes comprises a first measurement electrode, and wherein at least one electrode of the at least three electrodes comprises a second measurement electrode; measuring a first electrical potential between the first measurement electrode and the ground rod electrode in the aqueous sample; measuring a second electrical potential between the second measurement electrode and the ground rod electrode in the aqueous sample; and identifying a pH of the aqueous sample based upon a difference between the first electrical potential and the second electrical potential. Other aspects are described and claimed.
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公开(公告)号：US10408648B2
公开(公告)日：2019-09-10
申请号：US15198911
申请日：2016-06-30
Applicant: Hach Company
Inventor： David L. Rick , Ernie Ray Paoli , Philip N. King
IPC: G01F1/66 , G01F1/00 , G01P5/24 , G01N29/024
Abstract: An embodiment provides a method for measuring a fluid parameter of fluid flowing in a channel, including: transmitting, using a transmitter of a device, directed energy carrying a signal toward a surface of a fluid in a fluid channel, so as to produce one or more reflections from the fluid surface; detecting, by at least one receiver of the device, one or more received signals associated with the one or more reflections so produced; and determining, based upon a measurement beam comprising characteristics of the transmitted and received signals, a fluid parameter to be measured using a processor of the device; wherein, a measurement beam characteristic is adjusted based on a distance from the device to the fluid surface. Other embodiments are described and claimed.
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公开(公告)号：US10295385B2
公开(公告)日：2019-05-21
申请号：US15199249
申请日：2016-06-30
Applicant: Hach Company
Inventor： David L. Rick , Lawrence J. Scally , Dean Joseph Pizio , Ernie Ray Paoli , Philip N. King
Abstract: An embodiment provides a method for measuring velocity of fluid flow in a channel, including: transmitting, using a transmitter, directed energy carrying a signal toward a surface of a fluid in a fluid channel so as to produce a plurality reflections from locations substantially spanning the entire width of the fluid channel; detecting, using a plurality of measurement beams, received signals from the plurality of reflections so produced; determining, based upon differences between transmitted and received signals, a plurality of localized velocities; and computing, from the plurality of localized velocities, a cross-sectional average velocity of fluid in the channel. Other embodiments are described and claimed.
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公开(公告)号：US20190086531A1
公开(公告)日：2019-03-21
申请号：US15711591
申请日：2017-09-21
Applicant: Hach Company
Inventor： David L. Rick
CPC classification number: G01S13/582 , G01F23/284 , G01F23/2962 , G01S7/354 , G01S7/4911 , G01S7/4913 , G01S7/536 , G01S13/10 , G01S13/34 , G01S13/583 , G01S13/88 , G01S15/32 , G01S15/586 , G01S15/88 , G01S17/32 , G01S17/58 , G01S17/88 , G01S2007/356 , H04B1/69 , H04B2001/6912
Abstract: A method for constructing a frequency profile of an emitted signal suitable for use in a non-contact ranging system with multi-scale spectral analysis includes determining N stepped frequency chirps, wherein each frequency chirp of the N stepped frequency chirps has a linear FM modulation of predetermined bandwidth and slope, and wherein a starting frequency for each of the plurality of stepped frequency chirps is chosen so that a non-linear step profile is created which extends over a predetermined total bandwidth, sorting the plurality of N stepped frequency chirps into P sub-sequences, where P is equal to the product of decimation factors to be used in the multi-scale spectral analysis, and ordering the P sub-sequences end to end in time.
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