JPS5618752A - Driving method for sensor - Google Patents

Driving method for sensor

Info

Publication number
JPS5618752A
JPS5618752A JP9364079A JP9364079A JPS5618752A JP S5618752 A JPS5618752 A JP S5618752A JP 9364079 A JP9364079 A JP 9364079A JP 9364079 A JP9364079 A JP 9364079A JP S5618752 A JPS5618752 A JP S5618752A
Authority
JP
Japan
Prior art keywords
sensor
electric heater
oscillator
intermittent pulse
time constant
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
JP9364079A
Other languages
Japanese (ja)
Other versions
JPH024856B2 (en
Inventor
Mitsuteru Kimura
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP9364079A priority Critical patent/JPS5618752A/en
Publication of JPS5618752A publication Critical patent/JPS5618752A/en
Publication of JPH024856B2 publication Critical patent/JPH024856B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

PURPOSE: To efficiently drive a sensor having an electric heater of a small thermal time constant by making the oscillator output an intermittent pulse to heat the electric heater, and detecting the sensor output within the heating time in synchronization with the intermittent pulse.
CONSTITUTION: A circuit comprises a monostable multivibrator 1, oscillator 2 to output a high frequency above 1kHz, transformer 3, sensor 4, electric heater 4a provided on the sensor 4, and detection circuit 5. The monostable multivibrator 1 generates an intermittent pulse signal A to cause the oscillator 2 to generate a high frequency intermittent pulse B of above 10mm/sec., which is supplied for the electric heater 4a through the transformer 3. Thus, setting the oscillation frequency of the oscillator 2 at above 10kHz permits the electric heater 4a having a thermal time constant of below 1mm/sec. to be heated by the frequency one or more digit higher than the thermal time constant. Therefore, no detection function is damaged.
COPYRIGHT: (C)1981,JPO&Japio
JP9364079A 1979-07-25 1979-07-25 Driving method for sensor Granted JPS5618752A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9364079A JPS5618752A (en) 1979-07-25 1979-07-25 Driving method for sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9364079A JPS5618752A (en) 1979-07-25 1979-07-25 Driving method for sensor

Publications (2)

Publication Number Publication Date
JPS5618752A true JPS5618752A (en) 1981-02-21
JPH024856B2 JPH024856B2 (en) 1990-01-30

Family

ID=14087947

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9364079A Granted JPS5618752A (en) 1979-07-25 1979-07-25 Driving method for sensor

Country Status (1)

Country Link
JP (1) JPS5618752A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59143945A (en) * 1983-02-07 1984-08-17 Richo Seiki Kk Gas detecting device
JPS59143946A (en) * 1983-02-07 1984-08-17 Richo Seiki Kk Gas detecting device
JPH01206248A (en) * 1988-02-12 1989-08-18 Figaro Eng Inc Detecting method of imperfect combustion and apparatus therefor
JPH01206252A (en) * 1988-02-12 1989-08-18 Figaro Eng Inc Method of detecting gas and apparatus therefor
JPH01316652A (en) * 1988-02-02 1989-12-21 Figaro Eng Inc Gas detector

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8293179B2 (en) * 2006-07-14 2012-10-23 Fis Inc. Gas detection apparatus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59143945A (en) * 1983-02-07 1984-08-17 Richo Seiki Kk Gas detecting device
JPS59143946A (en) * 1983-02-07 1984-08-17 Richo Seiki Kk Gas detecting device
JPH04219B2 (en) * 1983-02-07 1992-01-06 Rikoo Seiki Kk
JPH041301B2 (en) * 1983-02-07 1992-01-10 Ricoh Seiki Co Ltd
JPH01316652A (en) * 1988-02-02 1989-12-21 Figaro Eng Inc Gas detector
JPH01206248A (en) * 1988-02-12 1989-08-18 Figaro Eng Inc Detecting method of imperfect combustion and apparatus therefor
JPH01206252A (en) * 1988-02-12 1989-08-18 Figaro Eng Inc Method of detecting gas and apparatus therefor

Also Published As

Publication number Publication date
JPH024856B2 (en) 1990-01-30

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