FR2356217A1 - CODED WHEEL FOR MEASURING DEVICE - Google Patents
CODED WHEEL FOR MEASURING DEVICEInfo
- 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- Withdrawn
Links
- 238000005553 drilling Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
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)
- Dc Digital Transmission (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Measuring Fluid Pressure (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.
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)
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)
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 |
-
1977
- 1977-02-16 FR FR7704413A patent/FR2356217A1/en not_active Withdrawn
- 1977-03-30 GB GB13440/77A patent/GB1570758A/en not_active Expired
- 1977-04-18 JP JP52043649A patent/JPS5944678B2/en not_active Expired
- 1977-05-31 MX MX77100413U patent/MX3524E/en unknown
- 1977-06-21 NL NL7706867A patent/NL7706867A/en not_active Application Discontinuation
Cited By (1)
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 |
---|---|
NL7706867A (en) | 1977-12-28 |
MX3524E (en) | 1981-01-20 |
GB1570758A (en) | 1980-07-09 |
JPS531549A (en) | 1978-01-09 |
JPS5944678B2 (en) | 1984-10-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |