JPS55141639A - Vibration sensor - Google Patents

Vibration sensor

Info

Publication number
JPS55141639A
JPS55141639A JP4876179A JP4876179A JPS55141639A JP S55141639 A JPS55141639 A JP S55141639A JP 4876179 A JP4876179 A JP 4876179A JP 4876179 A JP4876179 A JP 4876179A JP S55141639 A JPS55141639 A JP S55141639A
Authority
JP
Japan
Prior art keywords
vibration plate
engine
knocking
circular
vibration sensor
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
JP4876179A
Other languages
Japanese (ja)
Inventor
Kunihiko Sugihara
Kenji Yoneda
Shigeo Muranaka
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 JP4876179A priority Critical patent/JPS55141639A/en
Publication of JPS55141639A publication Critical patent/JPS55141639A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

PURPOSE: To detect the knocking of an engine with good sensitivity with a simple constitution by specifying the construction of a vibration sensor.
CONSTITUTION: A circular-thin-plate-form piezoelectric element 11 provided with an electrode surface 16 with a lead wire 17 is secured to the central surface of a circular vibration plate 10 made of metal. The vibration plate 10 is staked and fixed by way of a ring-form retainer 14 and case cover 15 within the housing part 13a of the case body made of metal having a circular cylindrical recess 12 of an inside diameter D which is so selected that the resonance frequencies of the vibration plate 10 become of the knocking frequency region of the engine, whereby the vibration sensor is provided. As a result of this, when the case body 13 vibrates owing to the vibrations of the engine, the vibration plate 10 makes membrane vibrations to cause the piezoelectric element 11 to deform. A voltage is then generated between the both electrode surfaces 16, 16 and the error voltage is fetched to the outside through the lead wire 17, whereby the knocking is detected with good sensitivity without using any band-pass filter.
COPYRIGHT: (C)1980,JPO&Japio
JP4876179A 1979-04-20 1979-04-20 Vibration sensor Pending JPS55141639A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4876179A JPS55141639A (en) 1979-04-20 1979-04-20 Vibration sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4876179A JPS55141639A (en) 1979-04-20 1979-04-20 Vibration sensor

Publications (1)

Publication Number Publication Date
JPS55141639A true JPS55141639A (en) 1980-11-05

Family

ID=12812257

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4876179A Pending JPS55141639A (en) 1979-04-20 1979-04-20 Vibration sensor

Country Status (1)

Country Link
JP (1) JPS55141639A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0193378U (en) * 1987-12-14 1989-06-20
JPH0193379U (en) * 1987-12-14 1989-06-20
CN109341844A (en) * 2018-12-06 2019-02-15 应达利电子股份有限公司 A kind of jar tester and its detection method
WO2019230490A1 (en) * 2018-05-28 2019-12-05 日本精機株式会社 Vibration detection sensor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0193378U (en) * 1987-12-14 1989-06-20
JPH0193379U (en) * 1987-12-14 1989-06-20
WO2019230490A1 (en) * 2018-05-28 2019-12-05 日本精機株式会社 Vibration detection sensor
CN109341844A (en) * 2018-12-06 2019-02-15 应达利电子股份有限公司 A kind of jar tester and its detection method
CN109341844B (en) * 2018-12-06 2020-12-25 深圳市深汕特别合作区应达利电子科技有限公司 Vibration detector and detection method thereof

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