JPS56112636A - Optical humidity sensor - Google Patents

Optical humidity sensor

Info

Publication number
JPS56112636A
JPS56112636A JP1582480A JP1582480A JPS56112636A JP S56112636 A JPS56112636 A JP S56112636A JP 1582480 A JP1582480 A JP 1582480A JP 1582480 A JP1582480 A JP 1582480A JP S56112636 A JPS56112636 A JP S56112636A
Authority
JP
Japan
Prior art keywords
light
humidity
optical fiber
inputted
wavelength
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
JP1582480A
Other languages
Japanese (ja)
Inventor
Akiya Goto
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP1582480A priority Critical patent/JPS56112636A/en
Publication of JPS56112636A publication Critical patent/JPS56112636A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
    • G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
    • G01N21/81—Indicating humidity

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plasma & Fusion (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)

Abstract

PURPOSE:To enable measurement of humidity optically without being influenced by the noise of an electromagnetic field by applying a light to a substance showing the change of color according to humidity and by detecting the humidity from the wavelength of diffuse light thereof. CONSTITUTION:A white light emitted from a light source 2 is led to the humidity sensor 1 through the intermediary of an optical fiber 4b, a directional light connector 3 and an optical fiber 4a and is applied to a reversible humidity indicating substance 15 wherein the spectral reflection property of a light wave changes in accordance with the quantity of water in air. The diffuse light thus obtained is led to a light-detecting part through the intermediary of the optical fiber 4a, the light connector 3 and an optical fiber 4c. And, when the diffuse light is inputted in a composite optical diode at the light-detecting part, a signal corresponding to the wavelength can be detected by electrodes 54, 55 and 56 provided separately in layers 51, 52 and 53, since the inputted light wave is inputted to different depth according to the wavelength thereof. By this constitution, remote measurement can be conducted free from bad influence even in a high electromagnetic field of a generator or the like.
JP1582480A 1980-02-12 1980-02-12 Optical humidity sensor Pending JPS56112636A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1582480A JPS56112636A (en) 1980-02-12 1980-02-12 Optical humidity sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1582480A JPS56112636A (en) 1980-02-12 1980-02-12 Optical humidity sensor

Publications (1)

Publication Number Publication Date
JPS56112636A true JPS56112636A (en) 1981-09-05

Family

ID=11899596

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1582480A Pending JPS56112636A (en) 1980-02-12 1980-02-12 Optical humidity sensor

Country Status (1)

Country Link
JP (1) JPS56112636A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985005401A1 (en) * 1984-05-24 1985-12-05 Johansen Joergen Skoubo A coupled window
WO1985005447A1 (en) * 1984-05-24 1985-12-05 Thalmond Anstalt Device for measuring a physical magnitude
US4641524A (en) * 1985-08-15 1987-02-10 Kms Fusion, Inc. Optical humidity sensor
JPH02189446A (en) * 1988-12-01 1990-07-25 Avl Ag Measuring apparatus for chemical and physical parameter of liquid and gaseous medium

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985005401A1 (en) * 1984-05-24 1985-12-05 Johansen Joergen Skoubo A coupled window
WO1985005447A1 (en) * 1984-05-24 1985-12-05 Thalmond Anstalt Device for measuring a physical magnitude
US4641524A (en) * 1985-08-15 1987-02-10 Kms Fusion, Inc. Optical humidity sensor
JPH02189446A (en) * 1988-12-01 1990-07-25 Avl Ag Measuring apparatus for chemical and physical parameter of liquid and gaseous medium

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