DE2546856C3 - Verfahren und Vorrichtung zum Messen der Frequenz bzw. Periodendauer eines Signals - Google Patents

Verfahren und Vorrichtung zum Messen der Frequenz bzw. Periodendauer eines Signals

Info

Publication number
DE2546856C3
DE2546856C3 DE2546856A DE2546856A DE2546856C3 DE 2546856 C3 DE2546856 C3 DE 2546856C3 DE 2546856 A DE2546856 A DE 2546856A DE 2546856 A DE2546856 A DE 2546856A DE 2546856 C3 DE2546856 C3 DE 2546856C3
Authority
DE
Germany
Prior art keywords
signal
period
curve
autocorrelation
correlation
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DE2546856A
Other languages
German (de)
English (en)
Other versions
DE2546856A1 (de
DE2546856B2 (de
Inventor
Yasuhito Kunitachi Tokio Takeuchi (Japan)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hewlett Packard Japan Inc
Original Assignee
Yokogawa Hewlett Packard 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 Yokogawa Hewlett Packard Ltd filed Critical Yokogawa Hewlett Packard Ltd
Publication of DE2546856A1 publication Critical patent/DE2546856A1/de
Publication of DE2546856B2 publication Critical patent/DE2546856B2/de
Application granted granted Critical
Publication of DE2546856C3 publication Critical patent/DE2546856C3/de
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/02—Measuring pulse or heart rate
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/08—Clinical applications
    • A61B8/0866—Clinical applications involving foetal diagnosis; pre-natal or peri-natal diagnosis of the baby
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Medical Informatics (AREA)
  • Surgery (AREA)
  • Biophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Molecular Biology (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Cardiology (AREA)
  • General Physics & Mathematics (AREA)
  • Gynecology & Obstetrics (AREA)
  • Pregnancy & Childbirth (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Measuring Frequencies, Analyzing Spectra (AREA)
DE2546856A 1974-10-31 1975-10-18 Verfahren und Vorrichtung zum Messen der Frequenz bzw. Periodendauer eines Signals Expired DE2546856C3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12591574A JPS567592B2 (en, 2012) 1974-10-31 1974-10-31

Publications (3)

Publication Number Publication Date
DE2546856A1 DE2546856A1 (de) 1976-05-06
DE2546856B2 DE2546856B2 (de) 1980-04-17
DE2546856C3 true DE2546856C3 (de) 1981-01-15

Family

ID=14922063

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2546856A Expired DE2546856C3 (de) 1974-10-31 1975-10-18 Verfahren und Vorrichtung zum Messen der Frequenz bzw. Periodendauer eines Signals

Country Status (7)

Country Link
US (1) US3991365A (en, 2012)
JP (1) JPS567592B2 (en, 2012)
CH (1) CH608620A5 (en, 2012)
DE (1) DE2546856C3 (en, 2012)
FR (1) FR2289917A1 (en, 2012)
GB (1) GB1503169A (en, 2012)
SE (1) SE7512149L (en, 2012)

Families Citing this family (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4143650A (en) * 1976-10-06 1979-03-13 Hoffmann-La Roche Inc. Directional doppler ultrasound systems for biosignal acquisition and method of using the same
US4174707A (en) * 1976-12-27 1979-11-20 American Optical Corporation Apparatus and process for antifact rejection through cross correlation in sphygmometry
US4135243A (en) * 1977-07-15 1979-01-16 Hewlett-Packard Company Single sampler heterodyne method for wideband frequency measurement
DE2818768C2 (de) * 1978-04-28 1986-07-24 Hewlett-Packard GmbH, 7030 Böblingen Verfahren und Vorrichtung zum Messen der Frequenz bzw. der Periodendauer der Grundschwingung eines annähernd periodischen Eingangssignales
EP0010922B1 (en) * 1978-10-27 1983-03-30 Consumer Microcircuits Limited Device for determining periodic components of an alternating signal
US4540946A (en) * 1980-06-06 1985-09-10 National Research Development Corp. Variable characteristic filters
US4463425A (en) * 1980-07-17 1984-07-31 Terumo Corporation Period measurement system
US4456959A (en) * 1980-07-17 1984-06-26 Terumo Corporation Period measurement system
US4428381A (en) 1981-03-13 1984-01-31 Medtronic, Inc. Monitoring device
US4372324A (en) * 1981-08-17 1983-02-08 Hewlett-Packard Company Analog peak voltage detector in a defibrillator
JPS596031A (ja) * 1982-07-02 1984-01-13 株式会社日立メデイコ 超音波胎児心拍数計測装置
US4573479A (en) * 1984-06-22 1986-03-04 American Home Products Corporation Systems and methods for monitoring the fetal heart
US4569356A (en) * 1984-11-05 1986-02-11 Nihon Kohden Corporation Method and apparatus for detecting fetal heart rate by autocorrelation
US4848355A (en) * 1985-05-20 1989-07-18 Matsushita Electric Industrial Co., Ltd. Ultrasonic doppler blood flowmeter
DE3518967A1 (de) * 1985-05-25 1986-11-27 Hewlett-Packard GmbH, 7030 Böblingen Schaltungsanordnung zum erfassen der herzschlagsbewegung
JPS63192421A (ja) * 1987-02-03 1988-08-09 テルモ株式会社 携帯型胎児監視装置
US4843564A (en) * 1987-04-23 1989-06-27 Tsi Incorporated Apparatus and method for measuring frequency of coherent component of a composite signal
JPH01180201U (en, 2012) * 1988-06-08 1989-12-25
US4963816A (en) * 1989-07-05 1990-10-16 The United States Of America As Represented By The Secretary Of The Air Force Instantaneous frequency measurement (IFM) receiver with only two delay lines
US5128607A (en) * 1990-11-09 1992-07-07 Hewlett-Packard Company Constant events frequency measurement and fast inverse circuit
US5170791A (en) * 1991-03-28 1992-12-15 Hewlett-Packard Company Method and apparatus for calculating the fetal heart rate
US5198748A (en) * 1991-10-28 1993-03-30 The United States Of America As Represented By The Secretary Of The Air Force Frequency measurement receiver with bandwidth improvement through synchronized phase shifted sampling
US5509421A (en) * 1995-04-25 1996-04-23 Analogic Corporation System, with sensor positioning indicator, for monitoring a biological signal
WO1999050679A2 (en) * 1998-03-30 1999-10-07 3Com Corporation Low complexity frequency estimator and interference cancellation method and device
US6442506B1 (en) * 1999-11-08 2002-08-27 TREVIñO GEORGE Spectrum analysis method and apparatus
JP4679755B2 (ja) * 2001-05-10 2011-04-27 株式会社デンソー 脈拍変動解析装置
GB0130906D0 (en) * 2001-12-22 2002-02-13 Jopejo Ltd Heart monitor
JP3729143B2 (ja) * 2002-03-14 2005-12-21 株式会社デンソー 脈波計測装置
US6942621B2 (en) * 2002-07-11 2005-09-13 Ge Medical Systems Information Technologies, Inc. Method and apparatus for detecting weak physiological signals
US20040133115A1 (en) * 2002-11-01 2004-07-08 Hamilton Emily F. Method and apparatus for identifying heart rate feature events
US7734464B2 (en) * 2005-05-20 2010-06-08 Tektronix, Inc. RF autocorrelation signal trigger generator
US8439842B2 (en) * 2009-01-29 2013-05-14 General Electric Company Method and device for controlling transmission power of an active transducer
US8491481B2 (en) * 2009-01-29 2013-07-23 General Electric Company System and method for measuring the instantaneous period of a quasi-periodic signal
CN103052356B (zh) * 2010-08-02 2015-11-25 皇家飞利浦电子股份有限公司 减少胎儿监测期间的超声信号含混性的方法
PT105423A (pt) 2010-12-10 2012-06-11 Univ Aveiro Sistema e método de medição fotónica da frequência por modulação electro-óptica complementar
RU2497445C1 (ru) * 2012-03-26 2013-11-10 Сергей Анатольевич Трифонов Способ диагностики состояния плода и матери в антенатальный период беременности и устройство для его реализации
RU2489968C1 (ru) * 2012-04-13 2013-08-20 Общество с ограниченной ответственностью "Юсонтек" Способ измерения частоты сердечных сокращений плода
US9451893B2 (en) * 2014-08-18 2016-09-27 Cameron Health, Inc. Calculation of self-correlation in an implantable cardiac device
CN108289653B (zh) 2015-09-15 2021-04-27 皇家飞利浦有限公司 用于确定胎儿心率的设备和方法
US10912474B2 (en) * 2016-03-10 2021-02-09 Epitronic Holdings Pte Ltd. Microelectronic sensor for use in hypersensitive microphones
DK3426133T3 (da) * 2016-03-10 2020-08-10 Epitronic Holdings Pte Ltd Mikroelektroniske sensorer til ikke-invasiv monitorering af fysiologiske parametre
EP3881754A1 (en) 2020-03-16 2021-09-22 Koninklijke Philips N.V. Processing unit and method for use in fetal monitoring
CN112269056B (zh) * 2020-10-10 2024-04-12 许继电气股份有限公司 一种高压变频继电保护装置的硬件测频电路
JP7482058B2 (ja) * 2021-02-16 2024-05-13 株式会社東芝 部分放電計測システムおよび部分放電計測方法
JP2024106750A (ja) * 2023-01-27 2024-08-08 株式会社日立製作所 コンピュータシステム、処理方法、及び処理プログラム

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3813654A (en) * 1971-10-05 1974-05-28 Sonicaid Ltd Diagnostic apparatus for fetal heartbeat monitoring
US3934577A (en) * 1972-12-08 1976-01-27 Hoffmann-La Roche Inc. Fetal heart rate monitoring apparatus

Also Published As

Publication number Publication date
GB1503169A (en) 1978-03-08
JPS5162764A (en, 2012) 1976-05-31
DE2546856A1 (de) 1976-05-06
FR2289917B1 (en, 2012) 1981-09-25
FR2289917A1 (fr) 1976-05-28
CH608620A5 (en, 2012) 1979-01-15
US3991365A (en) 1976-11-09
JPS567592B2 (en, 2012) 1981-02-18
SE7512149L (sv) 1976-05-03
DE2546856B2 (de) 1980-04-17

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
8339 Ceased/non-payment of the annual fee