FR1359334A - Differential frequency modulated transducer - Google Patents

Differential frequency modulated transducer

Info

Publication number
FR1359334A
FR1359334A FR928079A FR928079A FR1359334A FR 1359334 A FR1359334 A FR 1359334A FR 928079 A FR928079 A FR 928079A FR 928079 A FR928079 A FR 928079A FR 1359334 A FR1359334 A FR 1359334A
Authority
FR
France
Prior art keywords
frequency modulated
differential frequency
modulated transducer
transducer
differential
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.)
Expired
Application number
FR928079A
Other languages
French (fr)
Inventor
Emmanuel Allard
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.)
TELCO
Original Assignee
TELCO
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 TELCO filed Critical TELCO
Priority to FR928079A priority Critical patent/FR1359334A/en
Application granted granted Critical
Publication of FR1359334A publication Critical patent/FR1359334A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
    • G01L9/007—Transmitting or indicating the displacement of flexible diaphragms using variations in inductance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
    • G01D5/22—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils
    • G01D5/2208—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils by influencing the self-induction of the coils
    • G01D5/2216—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils by influencing the self-induction of the coils by a movable ferromagnetic element, e.g. a core
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values
    • G01L13/02—Devices or apparatus for measuring differences of two or more fluid pressure values using elastically-deformable members or pistons as sensing elements
    • G01L13/025—Devices or apparatus for measuring differences of two or more fluid pressure values using elastically-deformable members or pistons as sensing elements using diaphragms
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
    • G01L9/0072—Transmitting or indicating the displacement of flexible diaphragms using variations in capacitance

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR928079A 1963-03-15 1963-03-15 Differential frequency modulated transducer Expired FR1359334A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR928079A FR1359334A (en) 1963-03-15 1963-03-15 Differential frequency modulated transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR928079A FR1359334A (en) 1963-03-15 1963-03-15 Differential frequency modulated transducer

Publications (1)

Publication Number Publication Date
FR1359334A true FR1359334A (en) 1964-04-24

Family

ID=8799298

Family Applications (1)

Application Number Title Priority Date Filing Date
FR928079A Expired FR1359334A (en) 1963-03-15 1963-03-15 Differential frequency modulated transducer

Country Status (1)

Country Link
FR (1) FR1359334A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2205660A1 (en) * 1972-11-08 1974-05-31 Mess & Regelungst Veb K
WO1982001067A1 (en) * 1980-09-18 1982-04-01 Baum H Inductive pressure gauge
EP0057008A2 (en) * 1981-01-26 1982-08-04 Contis electronische Controlinstrumente GmbH Inductive position transducer
FR2555742A1 (en) * 1983-11-25 1985-05-31 Sereg Soc Effective-pressure inductive sensor
FR2722283A1 (en) * 1994-07-05 1996-01-12 Debreuille Pierre Jean Relative displacement measurement using coupled oscillatory circuits for monitoring walls of dams or tunnels

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2205660A1 (en) * 1972-11-08 1974-05-31 Mess & Regelungst Veb K
WO1982001067A1 (en) * 1980-09-18 1982-04-01 Baum H Inductive pressure gauge
US4536719A (en) * 1980-09-18 1985-08-20 Robert Bosch Gmbh Inductive pressure sensor using two oscillators
EP0057008A2 (en) * 1981-01-26 1982-08-04 Contis electronische Controlinstrumente GmbH Inductive position transducer
EP0057008A3 (en) * 1981-01-26 1985-01-23 Contis electronische Controlinstrumente GmbH Inductive position transducer
FR2555742A1 (en) * 1983-11-25 1985-05-31 Sereg Soc Effective-pressure inductive sensor
FR2722283A1 (en) * 1994-07-05 1996-01-12 Debreuille Pierre Jean Relative displacement measurement using coupled oscillatory circuits for monitoring walls of dams or tunnels

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