JPS55135718A - Oscillation sensor - Google Patents

Oscillation sensor

Info

Publication number
JPS55135718A
JPS55135718A JP4348679A JP4348679A JPS55135718A JP S55135718 A JPS55135718 A JP S55135718A JP 4348679 A JP4348679 A JP 4348679A JP 4348679 A JP4348679 A JP 4348679A JP S55135718 A JPS55135718 A JP S55135718A
Authority
JP
Japan
Prior art keywords
piezoelectric element
sensor
oscillation
expansion coefficient
thermal expansion
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
JP4348679A
Other languages
Japanese (ja)
Inventor
Kunihiko Sugihara
Kenji Yoneda
Rikuo Onoda
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor 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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP4348679A priority Critical patent/JPS55135718A/en
Publication of JPS55135718A publication Critical patent/JPS55135718A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

PURPOSE: To increase the durability of sensor, by reducing the thermal stress on the fixed surface, through the formation of the diaphragm plate fitting thin plate shaped piezoelectric element with almost the same material in the thermal expansion coefficient as that of the piezoelectric element.
CONSTITUTION: The piezoelectric element 14 of thin plate is fitted to the diaphragm plate 15, which is oscillated with the piezoelectric element 14. The oscillation of internal-combustion engines is detected with the voltage produced by oscillation deformation of the piezoelectric element 14. In such a sensor, the diaphragm plate 15 is made with the material having almost the same thermal expansion coefficient as the piezoelectric element 14, e.g., ceramic (thermal expansion coefficient:3W7× 10-6/°C). Thus, the thermal stress exerted on the fixed surface between the diapharagm plate 15 and the piezoelectric element 14 is minimized and the durability of the oscillation sensor can remarkably be increased.
COPYRIGHT: (C)1980,JPO&Japio
JP4348679A 1979-04-10 1979-04-10 Oscillation sensor Pending JPS55135718A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4348679A JPS55135718A (en) 1979-04-10 1979-04-10 Oscillation sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4348679A JPS55135718A (en) 1979-04-10 1979-04-10 Oscillation sensor

Publications (1)

Publication Number Publication Date
JPS55135718A true JPS55135718A (en) 1980-10-22

Family

ID=12665041

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4348679A Pending JPS55135718A (en) 1979-04-10 1979-04-10 Oscillation sensor

Country Status (1)

Country Link
JP (1) JPS55135718A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0594331A1 (en) * 1992-10-19 1994-04-27 Oki Ceramic Industry Co., Ltd. Piezoelectric sensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0594331A1 (en) * 1992-10-19 1994-04-27 Oki Ceramic Industry Co., Ltd. Piezoelectric sensor
US5376860A (en) * 1992-10-19 1994-12-27 Oki Ceramic Industry Co, Ltd. Piezoelectric sensor

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