ATE552496T1 - Methode und gerät zur hochpräzisionsmessung eines laufzeitabhängigen parameters - Google Patents

Methode und gerät zur hochpräzisionsmessung eines laufzeitabhängigen parameters

Info

Publication number
ATE552496T1
ATE552496T1 AT00919126T AT00919126T ATE552496T1 AT E552496 T1 ATE552496 T1 AT E552496T1 AT 00919126 T AT00919126 T AT 00919126T AT 00919126 T AT00919126 T AT 00919126T AT E552496 T1 ATE552496 T1 AT E552496T1
Authority
AT
Austria
Prior art keywords
location
energy wave
cyclically
received
medium
Prior art date
Application number
AT00919126T
Other languages
English (en)
Inventor
Arie Ariav
Original Assignee
Nexense Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nexense Ltd filed Critical Nexense Ltd
Application granted granted Critical
Publication of ATE552496T1 publication Critical patent/ATE552496T1/de

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/05Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
    • A61B5/0507Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves using microwaves or terahertz waves
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/02Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/667Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/22Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of acoustic effects
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/22Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of acoustic effects
    • G01K11/26Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of acoustic effects of resonant frequencies
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/02Analysing fluids
    • G01N29/024Analysing fluids by measuring propagation velocity or propagation time of acoustic waves
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/34Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor
    • G01N29/348Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor with frequency characteristics, e.g. single frequency signals, chirp signals
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00Indexing codes associated with group G01N29/00
    • G01N2291/02Indexing codes associated with the analysed material
    • G01N2291/028Material parameters
    • G01N2291/02836Flow rate, liquid level
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00Indexing codes associated with group G01N29/00
    • G01N2291/02Indexing codes associated with the analysed material
    • G01N2291/028Material parameters
    • G01N2291/02881Temperature
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00Indexing codes associated with group G01N29/00
    • G01N2291/10Number of transducers
    • G01N2291/102Number of transducers one emitter, one receiver

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Acoustics & Sound (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Immunology (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Veterinary Medicine (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Fluid Mechanics (AREA)
  • Public Health (AREA)
  • Radiology & Medical Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Biophysics (AREA)
  • Electromagnetism (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
AT00919126T 1999-04-28 2000-04-27 Methode und gerät zur hochpräzisionsmessung eines laufzeitabhängigen parameters ATE552496T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL12965199A IL129651A (en) 1999-04-28 1999-04-28 High-precision measuring method and apparatus
PCT/IL2000/000241 WO2000067013A1 (en) 1999-04-28 2000-04-27 High-precision measuring method and apparatus

Publications (1)

Publication Number Publication Date
ATE552496T1 true ATE552496T1 (de) 2012-04-15

Family

ID=11072739

Family Applications (1)

Application Number Title Priority Date Filing Date
AT00919126T ATE552496T1 (de) 1999-04-28 2000-04-27 Methode und gerät zur hochpräzisionsmessung eines laufzeitabhängigen parameters

Country Status (8)

Country Link
US (2) US6621278B2 (de)
EP (1) EP1194773B1 (de)
JP (1) JP2002543423A (de)
AT (1) ATE552496T1 (de)
AU (1) AU3986900A (de)
CA (1) CA2370164C (de)
IL (1) IL129651A (de)
WO (1) WO2000067013A1 (de)

Families Citing this family (85)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7080554B2 (en) 1999-04-28 2006-07-25 Nexense Ltd. High-precision measuring method and apparatus
AU2002363045A1 (en) * 2001-10-24 2003-05-06 Nexense Ltd. High-precision measuring method and apparatus
AU2003239377A1 (en) * 2002-05-07 2003-11-11 Enikia Llc Power theft prevention based on signature monitoring on power lines
DE10392902T5 (de) * 2002-07-08 2005-07-07 Saab Rosemount Tank Radar Ab Füllstandsmesssystem
US7250054B2 (en) * 2002-08-28 2007-07-31 Smith & Nephew, Inc. Systems, methods, and apparatuses for clamping and reclamping an orthopedic surgical cable
JP4146734B2 (ja) * 2003-01-17 2008-09-10 株式会社きんでん 超音波振動感知センサを用いた人の状態判別装置。
US7533571B2 (en) * 2003-02-13 2009-05-19 Nexense Ltd. Apparatus for making high-sensitivity measurements of various parameters, and sensors particularly useful in such apparatus
TWI353558B (en) * 2003-08-27 2011-12-01 Hon Hai Prec Ind Co Ltd An automatic measurement distribution system and m
IL159651A0 (en) * 2003-12-30 2004-06-01 Nexense Ltd Method and apparatus for measuring torque
IL160364A0 (en) * 2003-12-30 2009-02-11 Nexense Ltd Method and apparatus for measuring torque and other forces
US8942779B2 (en) 2004-02-05 2015-01-27 Early Sense Ltd. Monitoring a condition of a subject
US8491492B2 (en) 2004-02-05 2013-07-23 Earlysense Ltd. Monitoring a condition of a subject
US7314451B2 (en) * 2005-04-25 2008-01-01 Earlysense Ltd. Techniques for prediction and monitoring of clinical episodes
US8403865B2 (en) 2004-02-05 2013-03-26 Earlysense Ltd. Prediction and monitoring of clinical episodes
JP4809779B2 (ja) * 2004-02-05 2011-11-09 アーリーセンス・リミテッド 呼吸に現れる臨床的発症の予測及びモニタリング技術
US20070118054A1 (en) 2005-11-01 2007-05-24 Earlysense Ltd. Methods and systems for monitoring patients for clinical episodes
IL160365A0 (en) * 2004-02-12 2005-11-20 Nexense Ltd Method and apparatus for detecting panel conditions
IL166760A0 (en) * 2004-05-13 2006-01-15 Nexense Ltd Method and apparatus for non-invasively monitoringconcentrations of glucose or other target substan ces
IL164991A0 (en) * 2004-06-10 2005-12-18 Nexense Ltd High-sensitivity sensors, sensor assemblies, and sensor apparatus for sensing various parameters
IL162940A0 (en) * 2004-07-08 2005-11-20 Yechiel Cohen Clamping device and dental handpiece including same
US20060079872A1 (en) * 2004-10-08 2006-04-13 Eggleston Jeffrey L Devices for detecting heating under a patient return electrode
TWI267761B (en) * 2004-12-03 2006-12-01 Hon Hai Prec Ind Co Ltd A simulative measurement demo system and method
US7490817B2 (en) * 2005-01-04 2009-02-17 Bfs Diversified Products Llc Distance indicating system and method
US20080307885A1 (en) * 2005-02-22 2008-12-18 Nexense Ltd. Method and Apparatus for Precisely Measuring Wire Tension and Other Conditions, and High-Sensitivity Vibration Sensor Constructed in Accordance Therewith
US20060206014A1 (en) * 2005-03-13 2006-09-14 Nexense Ltd. Ear probe particularly for measuring various physiological conditions particularly blood pressure, temperature and/or respiration
US11457813B2 (en) 2005-03-29 2022-10-04 Martin W. Roche Method for detecting body parameters
EP1868498B1 (de) * 2005-03-29 2013-05-15 Martin Roche Sensor zur erkennung von körperparametern und verfahren zur erkennung von körperparametern
US20110213221A1 (en) 2005-03-29 2011-09-01 Roche Martin W Method for Detecting Body Parameters
WO2006116667A2 (en) * 2005-04-27 2006-11-02 Roho, Inc. Proximity sensor
US7364144B2 (en) * 2005-04-27 2008-04-29 Bfs Diversified Products, Llc Sensing and communication system and method
US7420462B2 (en) * 2006-01-23 2008-09-02 Bfs Diversified Products, Llc Air spring distance indicating system and method
US7328131B2 (en) * 2006-02-01 2008-02-05 Medtronic, Inc. Implantable pedometer
US7993269B2 (en) * 2006-02-17 2011-08-09 Medtronic, Inc. Sensor and method for spinal monitoring
US8016859B2 (en) 2006-02-17 2011-09-13 Medtronic, Inc. Dynamic treatment system and method of use
AU2006339993A1 (en) * 2006-03-14 2007-09-20 Mako Surgical Corp. Prosthetic device and system and method for implanting prosthetic device
US7389682B2 (en) * 2006-03-17 2008-06-24 Gm Global Technology Operations, Inc. Method and apparatus for engine torque sensing
US7733239B2 (en) * 2006-05-08 2010-06-08 Bfs Diversified Products, Llc Distance determining system and method
IL176025A0 (en) * 2006-05-30 2007-08-19 Nexense Ltd Force or displacement sensor
US20080275349A1 (en) * 2007-05-02 2008-11-06 Earlysense Ltd. Monitoring, predicting and treating clinical episodes
US8585607B2 (en) 2007-05-02 2013-11-19 Earlysense Ltd. Monitoring, predicting and treating clinical episodes
US8229057B2 (en) 2007-10-12 2012-07-24 Intel-Ge Care Innovations Llc Apparatus and method for non-contact sensing using temporal measures
US8882684B2 (en) 2008-05-12 2014-11-11 Earlysense Ltd. Monitoring, predicting and treating clinical episodes
US9883809B2 (en) 2008-05-01 2018-02-06 Earlysense Ltd. Monitoring, predicting and treating clinical episodes
EP2701131A2 (de) 2008-05-12 2014-02-26 Earlysense Ltd. Überwachung, Prognose und Behandlung von klinischen Episoden
US8078440B2 (en) 2008-09-19 2011-12-13 Smith & Nephew, Inc. Operatively tuning implants for increased performance
EP2349423B1 (de) 2008-10-24 2014-02-26 Hospitech Respiration Ltd. Beatmungssystem
US8126736B2 (en) 2009-01-23 2012-02-28 Warsaw Orthopedic, Inc. Methods and systems for diagnosing, treating, or tracking spinal disorders
US8685093B2 (en) 2009-01-23 2014-04-01 Warsaw Orthopedic, Inc. Methods and systems for diagnosing, treating, or tracking spinal disorders
US20100249534A1 (en) * 2009-03-26 2010-09-30 Jay Pierce System and method for an orthopedic dynamic data repository and registry for efficacy
FR2946753B1 (fr) * 2009-06-11 2011-07-22 Centre Nat Rech Scient Procede et dispositif ultrasonores pour caracteriser un milieu
US8720270B2 (en) 2010-06-29 2014-05-13 Ortho Sensor Inc. Prosthetic component for monitoring joint health
US9839390B2 (en) 2009-06-30 2017-12-12 Orthosensor Inc. Prosthetic component having a compliant surface
US8714009B2 (en) 2010-06-29 2014-05-06 Orthosensor Inc. Shielded capacitor sensor system for medical applications and method
US8707782B2 (en) 2009-06-30 2014-04-29 Orthosensor Inc Prosthetic component for monitoring synovial fluid and method
US8421479B2 (en) * 2009-06-30 2013-04-16 Navisense Pulsed echo propagation device and method for measuring a parameter
US8427176B2 (en) * 2009-06-30 2013-04-23 Orthosensor Inc Pulsed waveguide sensing device and method for measuring a parameter
US8679186B2 (en) 2010-06-29 2014-03-25 Ortho Sensor Inc. Hermetically sealed prosthetic component and method therefor
US9259179B2 (en) 2012-02-27 2016-02-16 Orthosensor Inc. Prosthetic knee joint measurement system including energy harvesting and method therefor
US8826733B2 (en) 2009-06-30 2014-09-09 Orthosensor Inc Sensored prosthetic component and method
US20110160616A1 (en) * 2009-06-30 2011-06-30 Orthosensor System and method for orthopedic load and location sensing
US8701484B2 (en) 2010-06-29 2014-04-22 Orthosensor Inc. Small form factor medical sensor structure and method therefor
US20100331679A1 (en) * 2009-06-30 2010-12-30 Orthosensor Pulsed echo sensing device and method for an orthopedic joint
US9462964B2 (en) 2011-09-23 2016-10-11 Orthosensor Inc Small form factor muscular-skeletal parameter measurement system
US20100331738A1 (en) * 2009-06-30 2010-12-30 Orthosensor Integrated sensor and interconnect for measuring a parameter of the muscular-skeletal system
US10010253B2 (en) 2010-03-17 2018-07-03 Hypnocore Ltd. Sleep analysis based on inter beat interval
US20130079675A1 (en) 2011-09-23 2013-03-28 Orthosensor Insert measuring system having an internal sensor assembly
US9332943B2 (en) 2011-09-23 2016-05-10 Orthosensor Inc Flexible surface parameter measurement system for the muscular-skeletal system
US8979758B2 (en) 2010-06-29 2015-03-17 Orthosensor Inc Sensing module for orthopedic load sensing insert device
US8939030B2 (en) * 2010-06-29 2015-01-27 Orthosensor Inc Edge-detect receiver for orthopedic parameter sensing
EP2588180B1 (de) 2010-06-29 2016-12-07 Hospitech Respiration Ltd. Vorrichtung und verfahren zur benetzung/entleerung einer körperhöhle
US10292625B2 (en) 2010-12-07 2019-05-21 Earlysense Ltd. Monitoring a sleeping subject
US9414940B2 (en) 2011-09-23 2016-08-16 Orthosensor Inc. Sensored head for a measurement tool for the muscular-skeletal system
US8911448B2 (en) 2011-09-23 2014-12-16 Orthosensor, Inc Device and method for enabling an orthopedic tool for parameter measurement
US9839374B2 (en) 2011-09-23 2017-12-12 Orthosensor Inc. System and method for vertebral load and location sensing
EP3216478A1 (de) 2012-01-03 2017-09-13 Hospitech Respiration Ltd. System und verfahren zur erfassung des bruchs der manschette in einem endotrachealtubus mit manschette
US9844335B2 (en) 2012-02-27 2017-12-19 Orthosensor Inc Measurement device for the muscular-skeletal system having load distribution plates
US9271675B2 (en) 2012-02-27 2016-03-01 Orthosensor Inc. Muscular-skeletal joint stability detection and method therefor
US9622701B2 (en) 2012-02-27 2017-04-18 Orthosensor Inc Muscular-skeletal joint stability detection and method therefor
US9237885B2 (en) 2012-11-09 2016-01-19 Orthosensor Inc. Muscular-skeletal tracking system and method
US9265447B2 (en) 2013-03-18 2016-02-23 Orthosensor Inc. System for surgical information and feedback display
US11793424B2 (en) 2013-03-18 2023-10-24 Orthosensor, Inc. Kinetic assessment and alignment of the muscular-skeletal system and method therefor
CA3043325A1 (en) 2016-11-10 2018-05-17 The Research Foundation For The State University Of New York System, method and biomarkers for airway obstruction
US10842432B2 (en) 2017-09-14 2020-11-24 Orthosensor Inc. Medial-lateral insert sensing system with common module and method therefor
US20200236545A1 (en) * 2018-09-14 2020-07-23 The Research Foundation For The State University Of New York Method and system for non-contact motion-based user authentication
US11812978B2 (en) 2019-10-15 2023-11-14 Orthosensor Inc. Knee balancing system using patient specific instruments

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1934960C3 (de) * 1969-07-10 1979-01-25 Prakla-Seismos Gmbh, 3000 Hannover Verfahren und Anordnung zum genauen Orten von Punkten
CH614051A5 (de) * 1977-04-07 1979-10-31 Siemens Ag Albis
US4186397A (en) * 1977-09-06 1980-01-29 Board Of Regents For Education Of The State Of Rhode Island Short range precision navigation and tracking system and method therefor
US4328567A (en) * 1979-11-15 1982-05-04 Halliburton Company Methods and apparatus for acoustic logging in earth formations
JPS5872009A (ja) * 1981-10-27 1983-04-28 Honda Motor Co Ltd 超音波流量計
US4480485A (en) * 1982-10-01 1984-11-06 Panametrics, Inc. Acoustic flowmeter with envelope midpoint tracking
US4664124A (en) * 1984-12-20 1987-05-12 The Kendall Company Biological fluid specific gravity monitor with ultrasonic sensor circuit
DE58905910D1 (de) * 1988-07-08 1993-11-18 Flowtec Ag Verfahren und anordnung zur durchflussmessung mittels ultraschallwellen.
JPH06118068A (ja) * 1991-06-28 1994-04-28 Mitsubishi Heavy Ind Ltd 材料の非破壊検査装置及び方法
JPH05281341A (ja) * 1992-03-30 1993-10-29 Isao Iida 距離測定方法及びその装置
JPH06288993A (ja) * 1993-03-31 1994-10-18 Japan Tobacco Inc 超音波式多成分濃度計
WO1997042498A1 (en) * 1996-05-03 1997-11-13 Ultrafast, Inc. A technique for eliminating ambiguity when making pulse-echo timing measurements
CA2310417C (en) * 2000-05-30 2010-02-23 Esi Environmental Sensors Inc. Fluid sensor

Also Published As

Publication number Publication date
US6621278B2 (en) 2003-09-16
EP1194773A4 (de) 2008-01-30
CA2370164C (en) 2008-11-25
IL129651A0 (en) 2000-02-29
IL129651A (en) 2004-08-31
EP1194773B1 (de) 2012-04-04
WO2000067013A1 (en) 2000-11-09
JP2002543423A (ja) 2002-12-17
AU3986900A (en) 2000-11-17
EP1194773A1 (de) 2002-04-10
US20020105340A1 (en) 2002-08-08
US20040104733A1 (en) 2004-06-03
US6856141B2 (en) 2005-02-15
CA2370164A1 (en) 2000-11-09

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