SE7512149L - Sett och anordning for metning av en signals frekvens resp. periodtid - Google Patents
Sett och anordning for metning av en signals frekvens resp. periodtidInfo
- Publication number
- SE7512149L SE7512149L SE7512149A SE7512149A SE7512149L SE 7512149 L SE7512149 L SE 7512149L SE 7512149 A SE7512149 A SE 7512149A SE 7512149 A SE7512149 A SE 7512149A SE 7512149 L SE7512149 L SE 7512149L
- Authority
- SE
- Sweden
- Prior art keywords
- saturation
- signal frequency
- period time
- resp
- frequency resp
- Prior art date
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—Detecting organic movements or changes, e.g. tumours, cysts, swellings
- A61B8/0866—Detecting organic movements or changes, e.g. tumours, cysts, swellings 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)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pathology (AREA)
- Radiology & Medical Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Veterinary Medicine (AREA)
- Surgery (AREA)
- Biophysics (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Cardiology (AREA)
- Gynecology & Obstetrics (AREA)
- Pregnancy & Childbirth (AREA)
- General Physics & Mathematics (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Measuring Frequencies, Analyzing Spectra (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12591574A JPS567592B2 (de) | 1974-10-31 | 1974-10-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
SE7512149L true SE7512149L (sv) | 1976-05-03 |
Family
ID=14922063
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7512149A SE7512149L (sv) | 1974-10-31 | 1975-10-30 | Sett och anordning for metning av en signals frekvens resp. periodtid |
Country Status (7)
Country | Link |
---|---|
US (1) | US3991365A (de) |
JP (1) | JPS567592B2 (de) |
CH (1) | CH608620A5 (de) |
DE (1) | DE2546856C3 (de) |
FR (1) | FR2289917A1 (de) |
GB (1) | GB1503169A (de) |
SE (1) | SE7512149L (de) |
Families Citing this family (44)
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 |
DE2965117D1 (en) * | 1978-10-27 | 1983-05-05 | Consumer Microcircuits | 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 |
EP0202920B1 (de) * | 1985-05-20 | 1994-03-09 | Matsushita Electric Industrial Co., Ltd. | Blutgeschwindigkeitsmesser nach dem Ultraschall-Doppler-Prinzip |
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 (de) * | 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 |
AU3218699A (en) | 1998-03-30 | 1999-10-18 | 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 |
CA2447861A1 (en) * | 2002-11-01 | 2004-05-01 | Lms Medical Systems Ltd. | 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 |
EP2600772B1 (de) | 2010-08-02 | 2016-03-16 | Koninklijke Philips N.V. | Verfahren zur verringerung der zweideutigkeit von ultraschallsignalen bei der überwachung von ungeborenen |
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 |
US9629565B2 (en) * | 2014-08-18 | 2017-04-25 | Cameron Health, Inc. | Peak selection for self correlation analysis of cardiac rate in an implantable medical devices |
US11266375B2 (en) | 2015-09-15 | 2022-03-08 | Koninklijke Philips N.V. | Device and method for determining fetal heart rate |
US10912474B2 (en) * | 2016-03-10 | 2021-02-09 | Epitronic Holdings Pte Ltd. | Microelectronic sensor for use in hypersensitive microphones |
US10918297B2 (en) * | 2016-03-10 | 2021-02-16 | Epitronic Holdings Pte Ltd. | Microelectronic sensors for non-invasive monitoring of physiological parameters |
EP3881754A1 (de) | 2020-03-16 | 2021-09-22 | Koninklijke Philips N.V. | Verarbeitungseinheit und -verfahren zur verwendung in der fötusüberwachung |
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 |
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)
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 |
-
1974
- 1974-10-31 JP JP12591574A patent/JPS567592B2/ja not_active Expired
-
1975
- 1975-10-18 DE DE2546856A patent/DE2546856C3/de not_active Expired
- 1975-10-20 CH CH1350475A patent/CH608620A5/xx not_active IP Right Cessation
- 1975-10-22 US US05/624,680 patent/US3991365A/en not_active Expired - Lifetime
- 1975-10-28 GB GB44477/75A patent/GB1503169A/en not_active Expired
- 1975-10-29 FR FR7533058A patent/FR2289917A1/fr active Granted
- 1975-10-30 SE SE7512149A patent/SE7512149L/xx unknown
Also Published As
Publication number | Publication date |
---|---|
CH608620A5 (de) | 1979-01-15 |
DE2546856A1 (de) | 1976-05-06 |
FR2289917B1 (de) | 1981-09-25 |
FR2289917A1 (fr) | 1976-05-28 |
US3991365A (en) | 1976-11-09 |
DE2546856B2 (de) | 1980-04-17 |
GB1503169A (en) | 1978-03-08 |
JPS567592B2 (de) | 1981-02-18 |
JPS5162764A (de) | 1976-05-31 |
DE2546856C3 (de) | 1981-01-15 |
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