JPS54108676A - Optical measuring apparatus - Google Patents

Optical measuring apparatus

Info

Publication number
JPS54108676A
JPS54108676A JP1539578A JP1539578A JPS54108676A JP S54108676 A JPS54108676 A JP S54108676A JP 1539578 A JP1539578 A JP 1539578A JP 1539578 A JP1539578 A JP 1539578A JP S54108676 A JPS54108676 A JP S54108676A
Authority
JP
Japan
Prior art keywords
light source
optical
prism
way
remote place
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.)
Granted
Application number
JP1539578A
Other languages
Japanese (ja)
Other versions
JPS5922888B2 (en
Inventor
Seiichi Onoda
Yoshiharu Yamada
Yasuo Minae
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP1539578A priority Critical patent/JPS5922888B2/en
Priority to FR7901903A priority patent/FR2417753A1/en
Priority to CA320,563A priority patent/CA1108430A/en
Priority to NL7901042A priority patent/NL7901042A/en
Priority to US06/012,026 priority patent/US4260883A/en
Priority to DE2905630A priority patent/DE2905630C2/en
Priority to GB7905399A priority patent/GB2016684B/en
Publication of JPS54108676A publication Critical patent/JPS54108676A/en
Publication of JPS5922888B2 publication Critical patent/JPS5922888B2/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
    • G01L9/0076—Transmitting or indicating the displacement of flexible diaphragms using photoelectric means
    • G01L9/0077—Transmitting or indicating the displacement of flexible diaphragms using photoelectric means for measuring reflected light
    • 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
    • G01D5/26—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/268—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light using optical fibres
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G01F23/292—Light, e.g. infrared or ultraviolet
    • 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
    • G01L9/0001—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means
    • G01L9/0007—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using photoelectric means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

PURPOSE:To measure physical changes at a remote place accurately and stably, by composing transmitting system and measuring part all in optical systems. CONSTITUTION:Light sources 1, 2 are alternately turned on and off by a driving circuit 3, and the optical beam 4 from the light source 1 and the optical beam 5 from the light source 2 are supplied into a lens 8 and a photo detector 9, by way of a reflecting mirror 6 and a half mirror 7, and by way of the mirror 7, respectively. The optical beam from the lens 8 is transmitted to a detecting part 12 at a remote place by way of an optical fiber for going path, and is radiated on a prism 13, so that the output beam 14 corresponding to the beam 4 from the light source 1 is supplied into a detector 20 through mirrors 15, 16, prism 13, and optical fiber 17 for returning path. On the other hand, the beam from the light source 2 is reflected by the prism 13 and is overlapped with the beam from the light source 1, thereby entering the fiber 17. The outputs from detectors 9 and 20 are signal-processed 21, so that the changes of the object being measured at a remote place may be detected.
JP1539578A 1978-02-15 1978-02-15 optical measurement device Expired JPS5922888B2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP1539578A JPS5922888B2 (en) 1978-02-15 1978-02-15 optical measurement device
FR7901903A FR2417753A1 (en) 1978-02-15 1979-01-25 REMOTE OPTICAL MEASUREMENT AND CONTROL SYSTEM OF AN OBJECT UNDERGOING A PHYSICAL TRANSFORMATION
CA320,563A CA1108430A (en) 1978-02-15 1979-01-31 Optical measurement system
NL7901042A NL7901042A (en) 1978-02-15 1979-02-09 OPTICAL MEASUREMENT SYSTEM.
US06/012,026 US4260883A (en) 1978-02-15 1979-02-14 Optical measurement system
DE2905630A DE2905630C2 (en) 1978-02-15 1979-02-14 Optical measuring device
GB7905399A GB2016684B (en) 1978-02-15 1979-02-15 Optical measurement system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1539578A JPS5922888B2 (en) 1978-02-15 1978-02-15 optical measurement device

Publications (2)

Publication Number Publication Date
JPS54108676A true JPS54108676A (en) 1979-08-25
JPS5922888B2 JPS5922888B2 (en) 1984-05-29

Family

ID=11887535

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1539578A Expired JPS5922888B2 (en) 1978-02-15 1978-02-15 optical measurement device

Country Status (1)

Country Link
JP (1) JPS5922888B2 (en)

Also Published As

Publication number Publication date
JPS5922888B2 (en) 1984-05-29

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