JPS5255676A - Method of and apparatus for automatically determining resonant frequency of earthquake detection element - Google Patents

Method of and apparatus for automatically determining resonant frequency of earthquake detection element

Info

Publication number
JPS5255676A
JPS5255676A JP51117104A JP11710476A JPS5255676A JP S5255676 A JPS5255676 A JP S5255676A JP 51117104 A JP51117104 A JP 51117104A JP 11710476 A JP11710476 A JP 11710476A JP S5255676 A JPS5255676 A JP S5255676A
Authority
JP
Japan
Prior art keywords
resonant frequency
detection element
automatically determining
earthquake detection
determining resonant
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.)
Pending
Application number
JP51117104A
Other languages
English (en)
Inventor
Ei Furederikuson Ooku
Eru Tomasu Erumaa
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.)
Chevron USA Inc
Original Assignee
Chevron Research and Technology Co
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 Chevron Research and Technology Co filed Critical Chevron Research and Technology Co
Publication of JPS5255676A publication Critical patent/JPS5255676A/ja
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V13/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices covered by groups G01V1/00 – G01V11/00
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H13/00—Measuring resonant frequency

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
JP51117104A 1975-10-01 1976-09-29 Method of and apparatus for automatically determining resonant frequency of earthquake detection element Pending JPS5255676A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/618,606 US4015202A (en) 1975-10-01 1975-10-01 Automatic measurement and display of resonance frequencies of seismic detection elements

Publications (1)

Publication Number Publication Date
JPS5255676A true JPS5255676A (en) 1977-05-07

Family

ID=24478379

Family Applications (2)

Application Number Title Priority Date Filing Date
JP51117104A Pending JPS5255676A (en) 1975-10-01 1976-09-29 Method of and apparatus for automatically determining resonant frequency of earthquake detection element
JP1982068691U Pending JPS57203337U (ja) 1975-10-01 1982-05-11

Family Applications After (1)

Application Number Title Priority Date Filing Date
JP1982068691U Pending JPS57203337U (ja) 1975-10-01 1982-05-11

Country Status (6)

Country Link
US (1) US4015202A (ja)
JP (2) JPS5255676A (ja)
CA (1) CA1054679A (ja)
DE (1) DE2644887C2 (ja)
FR (1) FR2326712A1 (ja)
GB (1) GB1557699A (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4233677A (en) * 1978-02-21 1980-11-11 Chevron Research Company Automatic system and method for testing marine streamers of seismic exploration systems
US4298969A (en) * 1979-09-26 1981-11-03 Exxon Production Research Company Method and apparatus for testing the impedances of geophone channels
US4448057A (en) * 1982-05-21 1984-05-15 Geosource Inc. Apparatus and method for testing a geophone during assembly
US5121362A (en) * 1987-10-15 1992-06-09 Shell Oil Company Geophone checker
US5095464A (en) * 1987-10-15 1992-03-10 Shell Oil Company Hydrophone checker
US6308554B1 (en) 1994-03-12 2001-10-30 Robert Bosch Gmbh Electronic device having an acceleration-sensitive sensor
ITMI20112421A1 (it) 2011-12-29 2013-06-30 St Microelectronics Srl Metodo e circuito per determinare frequenze di risonanza di un dispositivo risonante

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3501695A (en) * 1965-04-08 1970-03-17 Ericsson Telefon Ab L M Resonance measuring apparatus utilizing the sideband signals of an fm-test signal for feedback control

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2031951A (en) * 1932-02-25 1936-02-25 Bell Telephone Labor Inc Burglar alarm system
US2288310A (en) * 1938-04-23 1942-06-30 Lundberg Exploration S A Apparatus for geoelectric and seismic investigations
US2318248A (en) * 1940-02-21 1943-05-04 Socony Vacuum Oil Co Inc Phase meter
US2648979A (en) * 1946-08-09 1953-08-18 Seismograph Service Corp Transducer testing apparatus
US2986696A (en) * 1954-11-23 1961-05-30 Reeves Instrument Corp Method and apparatus for analyzing phase shifting networks
US3522529A (en) * 1967-12-14 1970-08-04 Phillips Petroleum Co Impedance measuring alternating current bridge having an automatically adjustable frequency oscillator
US3717810A (en) * 1971-07-15 1973-02-20 Gulf Research Development Co Abnormal impedance test for a string of geophones
FR2184442B1 (ja) * 1972-05-17 1974-12-20 Snecma
US3840804A (en) * 1973-05-21 1974-10-08 F Sauerland Crystal frequency monitor
US3984771A (en) * 1975-10-20 1976-10-05 Rca Corporation Accurate digital phase/frequency extractor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3501695A (en) * 1965-04-08 1970-03-17 Ericsson Telefon Ab L M Resonance measuring apparatus utilizing the sideband signals of an fm-test signal for feedback control

Also Published As

Publication number Publication date
DE2644887C2 (de) 1986-09-18
CA1054679A (en) 1979-05-15
FR2326712B1 (ja) 1983-03-04
DE2644887A1 (de) 1977-04-14
GB1557699A (en) 1979-12-12
JPS57203337U (ja) 1982-12-24
FR2326712A1 (fr) 1977-04-29
US4015202A (en) 1977-03-29

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