JPS54131980A - Pressure measuring apparatus - Google Patents

Pressure measuring apparatus

Info

Publication number
JPS54131980A
JPS54131980A JP3989378A JP3989378A JPS54131980A JP S54131980 A JPS54131980 A JP S54131980A JP 3989378 A JP3989378 A JP 3989378A JP 3989378 A JP3989378 A JP 3989378A JP S54131980 A JPS54131980 A JP S54131980A
Authority
JP
Japan
Prior art keywords
pressure
optical fiber
measuring apparatus
optical
photo detector
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
JP3989378A
Other languages
Japanese (ja)
Inventor
Katsutoshi Muto
Yoshiharu Komine
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP3989378A priority Critical patent/JPS54131980A/en
Publication of JPS54131980A publication Critical patent/JPS54131980A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
    • G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
    • G01L1/243—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre using means for applying force perpendicular to the fibre axis

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

PURPOSE: To provide a pressure measuring apparatus of high accuracy with reduced effect of errors by electromagnetic induction noise by photoelectrically detecting the change of pressure by the use of optical guides such as optical fibers.
CONSTITUTION: When the pressure F to be measured is transmitted via receiving member 15a to a movable optical fiber 13, the optical fiber 13 is displaced in correspondence to said pressure by a spring body 15b constituting movable device 15. When the optical coupling loss between a stationary optical fiber 12 and movable optical fiber 13 displaces according to the displacement quantity of the optical fiber 13, the quantity of light arriving at a photo detector 11 attenuates according to the coupling loss. As a result, it turns out that the quantity of light of the photo detector 11 changes in correspondence to the displacement quantity of the movable optical fiber 13. Hence, photoelectric conversion of the quantity of light propagated through the optical fibers 12 and 13 with the photo detector 11 causes the converted electric signal to correspond to the pressure F and therefore, the pressure measuring apparatus of high accuracy by which the magnitude of the pressure is known from this electric signal may be obtained.
COPYRIGHT: (C)1979,JPO&Japio
JP3989378A 1978-04-04 1978-04-04 Pressure measuring apparatus Pending JPS54131980A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3989378A JPS54131980A (en) 1978-04-04 1978-04-04 Pressure measuring apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3989378A JPS54131980A (en) 1978-04-04 1978-04-04 Pressure measuring apparatus

Publications (1)

Publication Number Publication Date
JPS54131980A true JPS54131980A (en) 1979-10-13

Family

ID=12565636

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3989378A Pending JPS54131980A (en) 1978-04-04 1978-04-04 Pressure measuring apparatus

Country Status (1)

Country Link
JP (1) JPS54131980A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5620282U (en) * 1979-07-25 1981-02-23
US4891512A (en) * 1988-02-20 1990-01-02 Stc Plc Thermo-optic differential expansion fiber sensor
CN105222946A (en) * 2015-10-13 2016-01-06 彭景吉 A kind of based on infrared pressure-detecting device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5620282U (en) * 1979-07-25 1981-02-23
US4891512A (en) * 1988-02-20 1990-01-02 Stc Plc Thermo-optic differential expansion fiber sensor
CN105222946A (en) * 2015-10-13 2016-01-06 彭景吉 A kind of based on infrared pressure-detecting device

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