FR2356217A1 - CODED WHEEL FOR MEASURING DEVICE - Google Patents

CODED WHEEL FOR MEASURING DEVICE

Info

Publication number
FR2356217A1
FR2356217A1 FR7704413A FR7704413A FR2356217A1 FR 2356217 A1 FR2356217 A1 FR 2356217A1 FR 7704413 A FR7704413 A FR 7704413A FR 7704413 A FR7704413 A FR 7704413A FR 2356217 A1 FR2356217 A1 FR 2356217A1
Authority
FR
France
Prior art keywords
representative
wheel
measuring device
relates
code
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.)
Withdrawn
Application number
FR7704413A
Other languages
French (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.)
Lynes Inc
Original Assignee
Lynes 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
Priority claimed from US05/699,953 external-priority patent/US4078232A/en
Application filed by Lynes Inc filed Critical Lynes Inc
Publication of FR2356217A1 publication Critical patent/FR2356217A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/16—Electric signal transmission systems in which transmission is by pulses
    • G08C19/28—Electric signal transmission systems in which transmission is by pulses using pulse code
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/06—Measuring temperature or pressure
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
    • E21B47/13—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. radio frequency
    • E21B47/135—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. radio frequency using light waves, e.g. infrared or ultraviolet waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/02—Means for indicating or recording specially adapted for thermometers
    • G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/08—Means for indicating or recording, e.g. for remote indication
    • G01L19/083—Means for indicating or recording, e.g. for remote indication electrical
    • 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
    • H03M1/22—Analogue/digital converters pattern-reading type
    • H03M1/24—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip
    • H03M1/26—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip with weighted coding, i.e. the weight given to a digit depends on the position of the digit within the block or code word, e.g. there is a given radix and the weights are powers of this radix

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geophysics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Measuring Fluid Pressure (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Dc Digital Transmission (AREA)

Abstract

L'invention concerne un appareil de mesure simultanée de deux paramètres. Elle se rapporte à un appareil qui comprend une roue 22 de codage ayant des zones transparentes et opaques suivant des bandes concentriques, représentant un code qui est détecté par des émetteurs 38 et des capteurs 40 alignés sur des orifices d'une plaque intermédiaire. Les signaux de la roue de codage sont modifiés par un oscillateur dont la fréquence est réglée par un autre paramètre afin que le signal transmis soit sous forme d'un mot numérique dont la fréquence est représentative d'un paramètre et dont la largeur d'impulsion est représentative d'un autre paramètre. Application à la détermination de la pression et de la temperature régnant au fond d'un puits de forage de pétrole.The invention relates to an apparatus for simultaneous measurement of two parameters. It relates to an apparatus which comprises a code wheel 22 having transparent and opaque areas in concentric bands, representing a code which is detected by emitters 38 and sensors 40 aligned with holes of an intermediate plate. The signals of the coding wheel are modified by an oscillator whose frequency is set by another parameter so that the transmitted signal is in the form of a digital word whose frequency is representative of a parameter and whose pulse width is representative of another parameter. Application to the determination of the pressure and the temperature prevailing at the bottom of an oil drilling well.

FR7704413A 1976-06-25 1977-02-16 CODED WHEEL FOR MEASURING DEVICE Withdrawn FR2356217A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/699,953 US4078232A (en) 1974-03-13 1976-06-25 Optical analog to digital converter

Publications (1)

Publication Number Publication Date
FR2356217A1 true FR2356217A1 (en) 1978-01-20

Family

ID=24811620

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7704413A Withdrawn FR2356217A1 (en) 1976-06-25 1977-02-16 CODED WHEEL FOR MEASURING DEVICE

Country Status (5)

Country Link
JP (1) JPS5944678B2 (en)
FR (1) FR2356217A1 (en)
GB (1) GB1570758A (en)
MX (1) MX3524E (en)
NL (1) NL7706867A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0008210A1 (en) * 1978-08-04 1980-02-20 Eaton Corporation Crane operating aid

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56130169U (en) * 1980-03-05 1981-10-02
GB8329518D0 (en) * 1983-11-04 1983-12-07 Spembly Ltd Pressure transducer/optical encoder
US4712006A (en) * 1985-08-27 1987-12-08 Shell Oil Company Steam quality measurement apparatus and method
KR920004757Y1 (en) * 1989-07-24 1992-07-18 삼성전자 주식회사 Programming switch of vcr

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0008210A1 (en) * 1978-08-04 1980-02-20 Eaton Corporation Crane operating aid

Also Published As

Publication number Publication date
JPS531549A (en) 1978-01-09
NL7706867A (en) 1977-12-28
JPS5944678B2 (en) 1984-10-31
MX3524E (en) 1981-01-20
GB1570758A (en) 1980-07-09

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Legal Events

Date Code Title Description
ST Notification of lapse