JPS5565147A - Humidity detector - Google Patents

Humidity detector

Info

Publication number
JPS5565147A
JPS5565147A JP13903078A JP13903078A JPS5565147A JP S5565147 A JPS5565147 A JP S5565147A JP 13903078 A JP13903078 A JP 13903078A JP 13903078 A JP13903078 A JP 13903078A JP S5565147 A JPS5565147 A JP S5565147A
Authority
JP
Japan
Prior art keywords
humidity
detection section
rectifier
temperature
resistor
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
JP13903078A
Other languages
Japanese (ja)
Other versions
JPS6051059B2 (en
Inventor
Osamu Kawasaki
Yukihiko Ise
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP53139030A priority Critical patent/JPS6051059B2/en
Publication of JPS5565147A publication Critical patent/JPS5565147A/en
Publication of JPS6051059B2 publication Critical patent/JPS6051059B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

PURPOSE: To enable to detect the humidity change with a simple constitution, by using the humidity detection element changed according to the change of humidity for the electric resistance between electrodes.
CONSTITUTION: The oscillation circuit 1 supplies the AC voltage having constant frequency and amplitude to the temperature detection section consisting of the resistor R2 and thermister RT and to the humidity detection section consisting of the resistor R1 and humidity detection element RH. The rectifier D1, capacitor C1, rectifier D2, and capacitor C2 pick up the envelope waveform of the voltage waveform at the junction between the humidity detection section and the temperature detection section. The envelope waveform picked up includes the information of humidity and temperature and the information only for the humidity can be picked up by comparing the both.
COPYRIGHT: (C)1980,JPO&Japio
JP53139030A 1978-11-10 1978-11-10 humidity detection device Expired JPS6051059B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53139030A JPS6051059B2 (en) 1978-11-10 1978-11-10 humidity detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53139030A JPS6051059B2 (en) 1978-11-10 1978-11-10 humidity detection device

Publications (2)

Publication Number Publication Date
JPS5565147A true JPS5565147A (en) 1980-05-16
JPS6051059B2 JPS6051059B2 (en) 1985-11-12

Family

ID=15235818

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53139030A Expired JPS6051059B2 (en) 1978-11-10 1978-11-10 humidity detection device

Country Status (1)

Country Link
JP (1) JPS6051059B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0897570A2 (en) * 1996-05-07 1999-02-24 Knox Security Engineering Corporation Moisture detecting devices such as for diapers and diapers having such devices

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5335596A (en) * 1976-09-14 1978-04-03 Kaneko Agricult Machinery Automatic temperature calibration system in electric resistance type moisture content meter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5335596A (en) * 1976-09-14 1978-04-03 Kaneko Agricult Machinery Automatic temperature calibration system in electric resistance type moisture content meter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0897570A2 (en) * 1996-05-07 1999-02-24 Knox Security Engineering Corporation Moisture detecting devices such as for diapers and diapers having such devices
EP0897570A4 (en) * 1996-05-07 2000-12-27 Knox Security Engineering Corp Moisture detecting devices such as for diapers and diapers having such devices

Also Published As

Publication number Publication date
JPS6051059B2 (en) 1985-11-12

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