FR2420765A1 - Procede et appareil de detection a sensibilite de phase - Google Patents

Procede et appareil de detection a sensibilite de phase

Info

Publication number
FR2420765A1
FR2420765A1 FR7907580A FR7907580A FR2420765A1 FR 2420765 A1 FR2420765 A1 FR 2420765A1 FR 7907580 A FR7907580 A FR 7907580A FR 7907580 A FR7907580 A FR 7907580A FR 2420765 A1 FR2420765 A1 FR 2420765A1
Authority
FR
France
Prior art keywords
detection method
phase
sensitivity detection
phase sensitivity
relates
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
FR7907580A
Other languages
English (en)
Other versions
FR2420765B1 (fr
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.)
Genrad Inc
Original Assignee
Genrad Inc
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 Genrad Inc filed Critical Genrad Inc
Publication of FR2420765A1 publication Critical patent/FR2420765A1/fr
Application granted granted Critical
Publication of FR2420765B1 publication Critical patent/FR2420765B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
    • G01R25/08—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents by counting of standard pulses
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/124—Sampling or signal conditioning arrangements specially adapted for A/D converters
    • H03M1/1245—Details of sampling arrangements or methods
    • H03M1/1255—Synchronisation of the sampling frequency or phase to the input frequency or phase
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/0614—Continuously compensating for, or preventing, undesired influence of physical parameters of harmonic distortion
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/50—Analogue/digital converters with intermediate conversion to time interval
    • H03M1/52—Input signal integrated with linear return to datum

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Phase Differences (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

L'invention concerne les appareils de détection à sensibilité de phase. Elle se rapporte à la réalisation d'approximations d'échantillonnage sinusoïdal par mesure successive et conversion numérique, dans des circuits de détection à sensibilité de phase, si bien que les dispositifs de commutation sont très simplifiés, et la composante fondamentale obtenue finalement ne comprend pas les harmoniques impairs d'ordre faible au moins. Application aux ponts de mesures d'impédances.
FR7907580A 1978-03-24 1979-03-26 Procede et appareil de detection a sensibilite de phase Granted FR2420765A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/889,654 US4181949A (en) 1978-03-24 1978-03-24 Method of and apparatus for phase-sensitive detection

Publications (2)

Publication Number Publication Date
FR2420765A1 true FR2420765A1 (fr) 1979-10-19
FR2420765B1 FR2420765B1 (fr) 1985-03-08

Family

ID=25395524

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7907580A Granted FR2420765A1 (fr) 1978-03-24 1979-03-26 Procede et appareil de detection a sensibilite de phase

Country Status (7)

Country Link
US (1) US4181949A (fr)
CA (1) CA1125435A (fr)
DE (1) DE2912264A1 (fr)
DK (1) DK121879A (fr)
FR (1) FR2420765A1 (fr)
GB (2) GB2102226B (fr)
IT (1) IT7948473A0 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4546441A (en) * 1982-07-22 1985-10-08 John Burch Method and apparatus for time based measurement of impedance
JPS62204166A (ja) * 1986-03-04 1987-09-08 Yokogawa Hewlett Packard Ltd ベクトル電圧比測定装置
GB2215062B (en) * 1988-02-19 1991-12-04 Yazaki Corp Sensor signal integrating method
US20100046690A1 (en) * 2008-08-22 2010-02-25 Nucsafe, Inc. Apparatus and Method for Detection of Fissile Material Using Active Interrogation
US9791487B2 (en) * 2012-03-29 2017-10-17 Egalax_Empia Technology Inc. Method and device for measuring signals

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3517298A (en) * 1968-07-09 1970-06-23 Peter L Richman Harmonic-insensitive gated a.c.-to-d.c. converter

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3445763A (en) * 1965-10-06 1969-05-20 Gen Electric Digital reading impedance measuring arrangement
JPS5648835B2 (fr) * 1972-11-15 1981-11-18
US3879724A (en) * 1973-11-19 1975-04-22 Vidar Corp Integrating analog to digital converter
US3876933A (en) * 1973-12-28 1975-04-08 Itt Resistance measuring instrument with linearized digital readout
US4081800A (en) * 1974-10-24 1978-03-28 Tokyo Shibaura Electric Co., Ltd. Analog-to-digital converter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3517298A (en) * 1968-07-09 1970-06-23 Peter L Richman Harmonic-insensitive gated a.c.-to-d.c. converter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
INSTRUMENTS AND EXPERIMENTAL TECHNIQUES, vol. 19, no. 4, juillet/août 1976, New York (US) *

Also Published As

Publication number Publication date
IT7948473A0 (it) 1979-03-26
CA1125435A (fr) 1982-06-08
GB2102226A (en) 1983-01-26
DE2912264A1 (de) 1979-10-25
FR2420765B1 (fr) 1985-03-08
GB2017438B (en) 1983-03-16
DK121879A (da) 1979-09-25
US4181949A (en) 1980-01-01
GB2102226B (en) 1983-06-29
GB2017438A (en) 1979-10-03

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Legal Events

Date Code Title Description
ST Notification of lapse