JPS57139652A - Humidity sensor - Google Patents

Humidity sensor

Info

Publication number
JPS57139652A
JPS57139652A JP2576881A JP2576881A JPS57139652A JP S57139652 A JPS57139652 A JP S57139652A JP 2576881 A JP2576881 A JP 2576881A JP 2576881 A JP2576881 A JP 2576881A JP S57139652 A JPS57139652 A JP S57139652A
Authority
JP
Japan
Prior art keywords
carbon fibers
detecting part
electrodes
extended
humidity
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
JP2576881A
Other languages
Japanese (ja)
Inventor
Hidetaka Shintaku
Nobutoshi Gako
Yasukuni Yamane
Chuji Suzuki
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Priority to JP2576881A priority Critical patent/JPS57139652A/en
Publication of JPS57139652A publication Critical patent/JPS57139652A/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
    • 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, by embedding a bundled body carbon fibers arranged in staggered manner in a humidity sensitive resin layer, and detecting the variation in electric resistance of said bundled body. CONSTITUTION:A detecting part 1, wherein the carbon fibers are finely arranged in staggered pattern in a film of humidity sensitive resin (e.g. nylon), is closely contacted with a substrate 2 (a glass plate, an 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 conducting paste. Lead wires 4 are extended from the electrodes 3. The electrodes 3 are coated by a bonding agent 15 such as epoxy series resin. In said sensor, when the resin in the detecting part 1 is extended by absorbing 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 of said carbon fiber bundled body, the humidity in the surrounding environment can be obtained.
JP2576881A 1981-02-23 1981-02-23 Humidity sensor Pending JPS57139652A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2576881A JPS57139652A (en) 1981-02-23 1981-02-23 Humidity sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2576881A JPS57139652A (en) 1981-02-23 1981-02-23 Humidity sensor

Publications (1)

Publication Number Publication Date
JPS57139652A true JPS57139652A (en) 1982-08-28

Family

ID=12175013

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2576881A Pending JPS57139652A (en) 1981-02-23 1981-02-23 Humidity sensor

Country Status (1)

Country Link
JP (1) JPS57139652A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4489603A (en) * 1981-09-09 1984-12-25 Nippon Soken, Inc. Moisture sensitive element
WO2002010704A3 (en) * 2000-08-01 2003-01-03 Calgon Carbon Corp Apparatus for detecting changes in concentrations of components of fluid mixtures
DE102015211450A1 (en) * 2015-06-22 2017-01-05 Volkswagen Aktiengesellschaft Device for measuring moisture in a battery system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4489603A (en) * 1981-09-09 1984-12-25 Nippon Soken, Inc. Moisture sensitive element
WO2002010704A3 (en) * 2000-08-01 2003-01-03 Calgon Carbon Corp Apparatus for detecting changes in concentrations of components of fluid mixtures
DE102015211450A1 (en) * 2015-06-22 2017-01-05 Volkswagen Aktiengesellschaft Device for measuring moisture in a battery system

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