GB1496837A - Method and apparatus for measuring the frequency and/or period of a signal - Google Patents

Method and apparatus for measuring the frequency and/or period of a signal

Info

Publication number
GB1496837A
GB1496837A GB47695/75A GB4769575A GB1496837A GB 1496837 A GB1496837 A GB 1496837A GB 47695/75 A GB47695/75 A GB 47695/75A GB 4769575 A GB4769575 A GB 4769575A GB 1496837 A GB1496837 A GB 1496837A
Authority
GB
United Kingdom
Prior art keywords
signal
reference signal
peak
sensed
sensed signal
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
GB47695/75A
Other languages
English (en)
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 GB1496837A publication Critical patent/GB1496837A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/43—Detecting, measuring or recording for evaluating the reproductive systems
    • A61B5/4306—Detecting, measuring or recording for evaluating the reproductive systems for evaluating the female reproductive systems, e.g. gynaecological evaluations
    • A61B5/4343—Pregnancy and labour monitoring, e.g. for labour onset detection
    • A61B5/4362—Assessing foetal parameters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
    • A61B5/024—Measuring pulse rate or heart rate
    • A61B5/02411—Measuring pulse rate or heart rate of foetuses
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R17/00—Measuring arrangements involving comparison with a reference value, e.g. bridge
    • G01R17/02—Arrangements in which the value to be measured is automatically compared with a reference value
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • 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
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F10/00—Apparatus for measuring unknown time intervals by electric means

Landscapes

  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Medical Informatics (AREA)
  • Animal Behavior & Ethology (AREA)
  • Gynecology & Obstetrics (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Pregnancy & Childbirth (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Cardiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Pediatric Medicine (AREA)
  • Reproductive Health (AREA)
  • Physiology (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
GB47695/75A 1974-11-20 1975-11-19 Method and apparatus for measuring the frequency and/or period of a signal Expired GB1496837A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13381074A JPS5615901B2 (enrdf_load_stackoverflow) 1974-11-20 1974-11-20

Publications (1)

Publication Number Publication Date
GB1496837A true GB1496837A (en) 1978-01-05

Family

ID=15113556

Family Applications (1)

Application Number Title Priority Date Filing Date
GB47695/75A Expired GB1496837A (en) 1974-11-20 1975-11-19 Method and apparatus for measuring the frequency and/or period of a signal

Country Status (4)

Country Link
JP (1) JPS5615901B2 (enrdf_load_stackoverflow)
DE (1) DE2548799C3 (enrdf_load_stackoverflow)
FR (1) FR2292237A1 (enrdf_load_stackoverflow)
GB (1) GB1496837A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2424540A1 (fr) * 1978-04-28 1979-11-23 Hewlett Packard Gmbh Procede et appareil de mesure de la frequence ou de la duree de periode d'un signal
GB2228331A (en) * 1989-02-15 1990-08-22 Precor Inc Heart rate monitor
EP1393673A1 (en) * 2002-08-30 2004-03-03 Pioneer Corporation System, method, program, and medium for measuring heart rate
US8527574B2 (en) 2006-07-07 2013-09-03 Rohde & Schwarz Gmbh & Co. Kg Device and method for high resolution time measurements
CN111141926A (zh) * 2019-12-27 2020-05-12 宁波三星智能电气有限公司 一种充电桩内的风机转速检测方法
CN112842312A (zh) * 2021-02-01 2021-05-28 上海交通大学 心率传感器及其自适应心跳锁环系统和方法
CN119810873A (zh) * 2025-03-12 2025-04-11 合肥中科知奇信息科技有限公司 信息输出方法、装置、设备、介质和程序产品

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4064488A (en) * 1976-06-10 1977-12-20 Motorola, Inc. Sampled signal detector
DE3120525C2 (de) * 1981-05-22 1986-11-27 Siemens AG, 1000 Berlin und 8000 München Verfahren und Schaltung zur digitalen Erfassung der Frequenz eines niderfrequent schwankenden elektrischen Signals
JP4747341B2 (ja) * 2006-09-26 2011-08-17 真美子 磯上 固体及び／又は植物検体の前処理の為のホモジナイザー
CN111007475B (zh) * 2019-12-11 2023-06-06 西安电子科技大学 一种lte外辐射源雷达频域模糊副峰抑制方法
CN113490313A (zh) * 2021-02-09 2021-10-08 赛尔富电子有限公司 一种自动照明系统以及控制方法
CN115356906B (zh) * 2022-07-13 2024-04-30 北京大学 一种线性光学采样的双阈值拟合方法及时间偏差估计方法

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2424540A1 (fr) * 1978-04-28 1979-11-23 Hewlett Packard Gmbh Procede et appareil de mesure de la frequence ou de la duree de periode d'un signal
GB2228331A (en) * 1989-02-15 1990-08-22 Precor Inc Heart rate monitor
GB2228331B (en) * 1989-02-15 1993-08-25 Precor Inc Wrist worn heart rate monitor
EP1393673A1 (en) * 2002-08-30 2004-03-03 Pioneer Corporation System, method, program, and medium for measuring heart rate
US7245960B2 (en) 2002-08-30 2007-07-17 Pioneer Corporation System, method, program, and medium for measuring heart rate
US8527574B2 (en) 2006-07-07 2013-09-03 Rohde & Schwarz Gmbh & Co. Kg Device and method for high resolution time measurements
CN111141926A (zh) * 2019-12-27 2020-05-12 宁波三星智能电气有限公司 一种充电桩内的风机转速检测方法
CN111141926B (zh) * 2019-12-27 2022-06-03 宁波三星智能电气有限公司 一种充电桩内的风机转速检测方法
CN112842312A (zh) * 2021-02-01 2021-05-28 上海交通大学 心率传感器及其自适应心跳锁环系统和方法
CN112842312B (zh) * 2021-02-01 2022-03-08 上海交通大学 心率传感器及其自适应心跳锁环系统和方法
CN119810873A (zh) * 2025-03-12 2025-04-11 合肥中科知奇信息科技有限公司 信息输出方法、装置、设备、介质和程序产品

Also Published As

Publication number Publication date
DE2548799A1 (de) 1976-05-26
JPS5159491A (enrdf_load_stackoverflow) 1976-05-24
JPS5615901B2 (enrdf_load_stackoverflow) 1981-04-13
FR2292237B3 (enrdf_load_stackoverflow) 1977-12-16
DE2548799B2 (de) 1977-09-15
FR2292237A1 (fr) 1976-06-18
DE2548799C3 (de) 1978-06-22

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19931119