JPS57139651A - Humidity sensor - Google Patents
Humidity sensorInfo
- Publication number
- JPS57139651A JPS57139651A JP2576781A JP2576781A JPS57139651A JP S57139651 A JPS57139651 A JP S57139651A JP 2576781 A JP2576781 A JP 2576781A JP 2576781 A JP2576781 A JP 2576781A JP S57139651 A JPS57139651 A JP S57139651A
- Authority
- JP
- Japan
- Prior art keywords
- carbon fibers
- detecting part
- humidity
- electrodes
- humidity sensor
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
- G01N27/121—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid for determining moisture content, e.g. humidity, of the fluid
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (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 Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
PURPOSE:To form the compact, light, highly reliable humidity sensor having less temperature dependence at low cost, by embedding a plurality of carbon fibers in a humidity sensitive resin layer, and detecting the variation in electric resistance between said fibers. CONSTITUTION:A detecting part 1, wherein the two carbon fibers are embedded in the humidity sensitive resin (e.g. nylon) so that they are crossed at a right angle, is closely contacted with a substrate 2 (a glass plate, alumina plate, and the like). Then electrodes 3 are formed at the ends of the carbon fibers extended from the detecting part 1 by using conductive paste. Lead wires 4 are further extended from the electrodes 3. The electrodes 3 are coated by a bonding agent 5 such as epoxy series resin. Thus the humidity sensor is obtained. In said sensor, when the resin in the detecting part 1 is expanded in the width direction by absorbing the moisture in the surrounding environment, the interval between the carbon fibers in the detecting part 1 is increased, and the contact resistance is increased. By measuring the value of the electric resistance between the carbon fibers, the humidity of the surrounding environment can be obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2576781A JPS57139651A (en) | 1981-02-23 | 1981-02-23 | Humidity sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2576781A JPS57139651A (en) | 1981-02-23 | 1981-02-23 | Humidity sensor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57139651A true JPS57139651A (en) | 1982-08-28 |
JPH0117103B2 JPH0117103B2 (en) | 1989-03-29 |
Family
ID=12174983
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2576781A Granted JPS57139651A (en) | 1981-02-23 | 1981-02-23 | Humidity sensor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57139651A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4489603A (en) * | 1981-09-09 | 1984-12-25 | Nippon Soken, Inc. | Moisture sensitive element |
JPS60200152A (en) * | 1984-03-24 | 1985-10-09 | Nisshinbo Ind Inc | Humidity-sensitive element |
GB2322452A (en) * | 1997-02-25 | 1998-08-26 | Toshikazu Suda | Electrical resistance type humidity sensor with temperature compensation |
JP2012023224A (en) * | 2010-07-15 | 2012-02-02 | National Institute Of Advanced Industrial & Technology | Electrochemical device using porous electrode |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4967685A (en) * | 1972-09-20 | 1974-07-01 | ||
JPS5433084A (en) * | 1977-08-18 | 1979-03-10 | Matsushita Electric Ind Co Ltd | Humidity sensor |
-
1981
- 1981-02-23 JP JP2576781A patent/JPS57139651A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4967685A (en) * | 1972-09-20 | 1974-07-01 | ||
JPS5433084A (en) * | 1977-08-18 | 1979-03-10 | Matsushita Electric Ind Co Ltd | Humidity sensor |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4489603A (en) * | 1981-09-09 | 1984-12-25 | Nippon Soken, Inc. | Moisture sensitive element |
JPS60200152A (en) * | 1984-03-24 | 1985-10-09 | Nisshinbo Ind Inc | Humidity-sensitive element |
GB2322452A (en) * | 1997-02-25 | 1998-08-26 | Toshikazu Suda | Electrical resistance type humidity sensor with temperature compensation |
GB2322452B (en) * | 1997-02-25 | 1999-03-17 | Toshikazu Suda | Electrical resistance type humidity sensor |
JP2012023224A (en) * | 2010-07-15 | 2012-02-02 | National Institute Of Advanced Industrial & Technology | Electrochemical device using porous electrode |
Also Published As
Publication number | Publication date |
---|---|
JPH0117103B2 (en) | 1989-03-29 |
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