FR2292237A1 - METHOD AND DEVICE FOR MEASURING THE PERIOD LENGTH OR FREQUENCY OF A SIGNAL - Google Patents

METHOD AND DEVICE FOR MEASURING THE PERIOD LENGTH OR FREQUENCY OF A SIGNAL

Info

Publication number
FR2292237A1
FR2292237A1 FR7535154A FR7535154A FR2292237A1 FR 2292237 A1 FR2292237 A1 FR 2292237A1 FR 7535154 A FR7535154 A FR 7535154A FR 7535154 A FR7535154 A FR 7535154A FR 2292237 A1 FR2292237 A1 FR 2292237A1
Authority
FR
France
Prior art keywords
measuring
frequency
signal
period length
period
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.)
Granted
Application number
FR7535154A
Other languages
French (fr)
Other versions
FR2292237B3 (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 FR2292237A1 publication Critical patent/FR2292237A1/en
Application granted granted Critical
Publication of FR2292237B3 publication Critical patent/FR2292237B3/fr
Granted 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 pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/024—Detecting, measuring or recording pulse rate or heart rate
    • A61B5/02411—Detecting, measuring or recording 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
FR7535154A 1974-11-20 1975-11-18 METHOD AND DEVICE FOR MEASURING THE PERIOD LENGTH OR FREQUENCY OF A SIGNAL Granted FR2292237A1 (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
FR2292237A1 true FR2292237A1 (en) 1976-06-18
FR2292237B3 FR2292237B3 (en) 1977-12-16

Family

ID=15113556

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7535154A Granted FR2292237A1 (en) 1974-11-20 1975-11-18 METHOD AND DEVICE FOR MEASURING THE PERIOD LENGTH OR FREQUENCY OF A SIGNAL

Country Status (4)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113490313A (en) * 2021-02-09 2021-10-08 赛尔富电子有限公司 Automatic lighting system and control method

Families Citing this family (10)

* 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
DE2818768C2 (en) * 1978-04-28 1986-07-24 Hewlett-Packard GmbH, 7030 Böblingen Method and device for measuring the frequency or the period duration of the fundamental oscillation of an approximately periodic input signal
DE3120525C2 (en) * 1981-05-22 1986-11-27 Siemens AG, 1000 Berlin und 8000 München Method and circuit for the digital acquisition of the frequency of an electrical signal which fluctuates at a low frequency
US4938228A (en) * 1989-02-15 1990-07-03 Righter William H Wrist worn heart rate monitor
JP3980969B2 (en) * 2002-08-30 2007-09-26 パイオニア株式会社 Heart rate measurement system, heart rate measurement method, heart rate measurement program, and recording medium recording the program
DE102006032962A1 (en) * 2006-07-07 2008-01-10 Rhode & Schwarz Gmbh & Co. Kg Analog trigger signal`s temporal state determining method for measuring time, involves implementing analog cross correlation between trigger and clock signals, and implementing analog integration in integrator after analog mixing
JP4747341B2 (en) * 2006-09-26 2011-08-17 真美子 磯上 Homogenizer for pretreatment of solid and / or plant specimens
CN111007475B (en) * 2019-12-11 2023-06-06 西安电子科技大学 LTE external radiation source radar frequency domain fuzzy auxiliary peak suppression method
CN111141926B (en) * 2019-12-27 2022-06-03 宁波三星智能电气有限公司 Method for detecting rotating speed of fan in charging pile
CN112842312B (en) * 2021-02-01 2022-03-08 上海交通大学 Heart rate sensor and self-adaptive heartbeat lock ring system and method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113490313A (en) * 2021-02-09 2021-10-08 赛尔富电子有限公司 Automatic lighting system and control method

Also Published As

Publication number Publication date
JPS5615901B2 (en) 1981-04-13
DE2548799C3 (en) 1978-06-22
DE2548799B2 (en) 1977-09-15
FR2292237B3 (en) 1977-12-16
GB1496837A (en) 1978-01-05
JPS5159491A (en) 1976-05-24
DE2548799A1 (en) 1976-05-26

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