JPS5624567A - Humidity measuring system - Google Patents

Humidity measuring system

Info

Publication number
JPS5624567A
JPS5624567A JP9913279A JP9913279A JPS5624567A JP S5624567 A JPS5624567 A JP S5624567A JP 9913279 A JP9913279 A JP 9913279A JP 9913279 A JP9913279 A JP 9913279A JP S5624567 A JPS5624567 A JP S5624567A
Authority
JP
Japan
Prior art keywords
humidity
capacitor
humidity sensor
varies
resistance value
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
JP9913279A
Other languages
Japanese (ja)
Inventor
Akihiro Yamataka
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP9913279A priority Critical patent/JPS5624567A/en
Publication of JPS5624567A publication Critical patent/JPS5624567A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To take out changes in the resistance value of a humidity sensor as a time data by means of a time constant circuit comprising a semiconductor humidity sensor and a capacitor.
CONSTITUTION: A time constant circuit consists of a humidity sensing element K of a semiconductor humidity sensor HS and a capacitor C1. First, the transistor TR2 is energized to discharge the capacitor C1. Then, when the humidity measuring signal is given to the element K from the terminal 02, the capacitor C1 is charged through the element K. The time until the charged voltage, namely, the output I1 reaches a given threshold level is determined by the resistance value of the element K which varies with the humidity. Thereby, the supply of the output to the detection circuit having a given threshold level enables the taking out of the time data which varies with the humidity.
COPYRIGHT: (C)1981,JPO&Japio
JP9913279A 1979-08-04 1979-08-04 Humidity measuring system Pending JPS5624567A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9913279A JPS5624567A (en) 1979-08-04 1979-08-04 Humidity measuring system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9913279A JPS5624567A (en) 1979-08-04 1979-08-04 Humidity measuring system

Publications (1)

Publication Number Publication Date
JPS5624567A true JPS5624567A (en) 1981-03-09

Family

ID=14239206

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9913279A Pending JPS5624567A (en) 1979-08-04 1979-08-04 Humidity measuring system

Country Status (1)

Country Link
JP (1) JPS5624567A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59168518A (en) * 1983-03-15 1984-09-22 Toshiba Corp Humidifier
JPS6167553U (en) * 1984-10-05 1986-05-09
JPS6167551U (en) * 1984-10-05 1986-05-09
JPS6167552U (en) * 1984-10-05 1986-05-09
JPS6170760U (en) * 1984-10-17 1986-05-14

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59168518A (en) * 1983-03-15 1984-09-22 Toshiba Corp Humidifier
JPS6167553U (en) * 1984-10-05 1986-05-09
JPS6167551U (en) * 1984-10-05 1986-05-09
JPS6167552U (en) * 1984-10-05 1986-05-09
JPS6170760U (en) * 1984-10-17 1986-05-14

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