JPS56158928A - Temperature detector - Google Patents

Temperature detector

Info

Publication number
JPS56158928A
JPS56158928A JP6310280A JP6310280A JPS56158928A JP S56158928 A JPS56158928 A JP S56158928A JP 6310280 A JP6310280 A JP 6310280A JP 6310280 A JP6310280 A JP 6310280A JP S56158928 A JPS56158928 A JP S56158928A
Authority
JP
Japan
Prior art keywords
exciting
temp
vibration mode
temperature detector
vibrator
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
JP6310280A
Other languages
Japanese (ja)
Inventor
Hideo Hoshi
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments 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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP6310280A priority Critical patent/JPS56158928A/en
Publication of JPS56158928A publication Critical patent/JPS56158928A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/32—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using change of resonant frequency of a crystal

Abstract

PURPOSE:To perform temp. detection with high accuracy and improve mass-productivity by exciting a piezoelectric vibrator in two modes. CONSTITUTION:Two oscillation circuits are formed by connecting feedback circuits 7a, 7b respectively to a vibrator 6 having exciting electrodes 6a, 6b, for f1 vibration mode and exciting electrodes 6c, 6d for f2 vibration mode. The frequency differences fT of the respective oscillation outputs are calculated 8 and counted 9. Temp. is operated 10 from the count value and is displayed 11.
JP6310280A 1980-05-13 1980-05-13 Temperature detector Pending JPS56158928A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6310280A JPS56158928A (en) 1980-05-13 1980-05-13 Temperature detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6310280A JPS56158928A (en) 1980-05-13 1980-05-13 Temperature detector

Publications (1)

Publication Number Publication Date
JPS56158928A true JPS56158928A (en) 1981-12-08

Family

ID=13219585

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6310280A Pending JPS56158928A (en) 1980-05-13 1980-05-13 Temperature detector

Country Status (1)

Country Link
JP (1) JPS56158928A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60131434A (en) * 1983-12-20 1985-07-13 Yokogawa Hokushin Electric Corp Temperature sensor
JPS60131433A (en) * 1983-12-20 1985-07-13 Yokogawa Hokushin Electric Corp Temperature sensor
JPH02181619A (en) * 1989-01-06 1990-07-16 Nippon Dempa Kogyo Co Ltd Piezoelectric sensor and temperature measuring instrument
JPH02183128A (en) * 1989-01-09 1990-07-17 Nippon Dempa Kogyo Co Ltd Piezo-electric vibrator for temperature detection, and detection of temperature

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60131434A (en) * 1983-12-20 1985-07-13 Yokogawa Hokushin Electric Corp Temperature sensor
JPS60131433A (en) * 1983-12-20 1985-07-13 Yokogawa Hokushin Electric Corp Temperature sensor
JPH0544612B2 (en) * 1983-12-20 1993-07-06 Yokogawa Electric Corp
JPH02181619A (en) * 1989-01-06 1990-07-16 Nippon Dempa Kogyo Co Ltd Piezoelectric sensor and temperature measuring instrument
JPH02183128A (en) * 1989-01-09 1990-07-17 Nippon Dempa Kogyo Co Ltd Piezo-electric vibrator for temperature detection, and detection of temperature

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