JPS56112636A - Optical humidity sensor - Google Patents
Optical humidity sensorInfo
- 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
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.
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)
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 |
-
1980
- 1980-02-12 JP JP1582480A patent/JPS56112636A/en active Pending
Cited By (4)
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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