JPS5479088A - Thermometer utilizing resonance absorption phenomenon - Google Patents

Thermometer utilizing resonance absorption phenomenon

Info

Publication number
JPS5479088A
JPS5479088A JP14641177A JP14641177A JPS5479088A JP S5479088 A JPS5479088 A JP S5479088A JP 14641177 A JP14641177 A JP 14641177A JP 14641177 A JP14641177 A JP 14641177A JP S5479088 A JPS5479088 A JP S5479088A
Authority
JP
Japan
Prior art keywords
signal
frequency
high precision
detecting
absorption
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
JP14641177A
Other languages
Japanese (ja)
Other versions
JPS593696B2 (en
Inventor
Akira Ote
Hideto Iwaoka
Koji Akiyama
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works 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 Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Hokushin Electric Corp
Priority to JP14641177A priority Critical patent/JPS593696B2/en
Publication of JPS5479088A publication Critical patent/JPS5479088A/en
Publication of JPS593696B2 publication Critical patent/JPS593696B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Radiation Pyrometers (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

PURPOSE: To realize output of measured temperature signal by detecting absorption frequency at high precision with high resistance to noise, by detecting double harmonic component and triple harmonic aomponent of low frequency signal of amplitude modulation signal obtained from sensor oscillator, and utilizing both components.
CONSTITUTION: Due to the signal from a control circuit 6, the oscillation frequency (ν) of a sensor oscillator 2 is subjected to high speed sweeping as in (e), and when the output signal Ef' of a detecting means 41 becomes equal to a constant value Ec as in figure (b), the sweeping stops, and the frequency is held at νc. The circuit 6, when the output signal of detecting means 42 is E25<E2 (constant value), checks the existence of absorption frequency signal νt by double frequency signal E2f due to the absorption phenomenon of the change in signal Ef', and prevents malfunction of noise disturbance. Next, the circuit 6 closes a switch S1, and controls the oscillator 2 so that the output signal Ef of the means 41 (triple harmonic component) may be zero. Thus, by making the oscillation frequency (ν) equal to the frequency vt at high precision, and making calculations, the temperature may be obtained at high precision.
COPYRIGHT: (C)1979,JPO&Japio
JP14641177A 1977-12-05 1977-12-05 Thermometer using resonance absorption phenomenon Expired JPS593696B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14641177A JPS593696B2 (en) 1977-12-05 1977-12-05 Thermometer using resonance absorption phenomenon

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14641177A JPS593696B2 (en) 1977-12-05 1977-12-05 Thermometer using resonance absorption phenomenon

Publications (2)

Publication Number Publication Date
JPS5479088A true JPS5479088A (en) 1979-06-23
JPS593696B2 JPS593696B2 (en) 1984-01-25

Family

ID=15407077

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14641177A Expired JPS593696B2 (en) 1977-12-05 1977-12-05 Thermometer using resonance absorption phenomenon

Country Status (1)

Country Link
JP (1) JPS593696B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61137498A (en) * 1984-12-07 1986-06-25 Matsushita Electric Ind Co Ltd Loudspeaker

Also Published As

Publication number Publication date
JPS593696B2 (en) 1984-01-25

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