JPS57189027A - Oscillation detector - Google Patents

Oscillation detector

Info

Publication number
JPS57189027A
JPS57189027A JP7523781A JP7523781A JPS57189027A JP S57189027 A JPS57189027 A JP S57189027A JP 7523781 A JP7523781 A JP 7523781A JP 7523781 A JP7523781 A JP 7523781A JP S57189027 A JPS57189027 A JP S57189027A
Authority
JP
Japan
Prior art keywords
metallic
oscillation
base
oscillator
stuck
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
JP7523781A
Other languages
Japanese (ja)
Other versions
JPH0138250B2 (en
Inventor
Naoteru Tsuda
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP7523781A priority Critical patent/JPS57189027A/en
Publication of JPS57189027A publication Critical patent/JPS57189027A/en
Publication of JPH0138250B2 publication Critical patent/JPH0138250B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0603—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a piezoelectric bender, e.g. bimorph

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To obtain a high S/N ratio, less erroneous detection, and high precision by using metal which decreases in Q value as amplitude increases for a metallic oscillation piece stuck to the piezoelectric magnetic plate of an oscillator. CONSTITUTION:On a metallic base 1, a metallic supporting base 2 is stuck and on the supporting base 2, one end of an oscillator 5 constituted by sticking a piezoelectric magnetic plate 4 on a metallic oscillating piece 3 made of oscillation damping metal which decreases in mechanical Q value as the amplitude of oscillation by external force increases is stuck. The surface electrode of the plate 4 is connected to a terminal 8 implanted in the metallic base 1 through an insulator 7 by a lead line 6, and the reverse surface electrode of the plate 4 is connected electrically to a terminal 9 implanted in the metallic base 1 through a metallic oscillating piece 3, the supporting base 2, and the metallic base 1. The length of the metallic oscillating piece 3 is so set that the resonance frequency of the oscillator 5 is equal to that of the oscillation to be detected.
JP7523781A 1981-05-18 1981-05-18 Oscillation detector Granted JPS57189027A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7523781A JPS57189027A (en) 1981-05-18 1981-05-18 Oscillation detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7523781A JPS57189027A (en) 1981-05-18 1981-05-18 Oscillation detector

Publications (2)

Publication Number Publication Date
JPS57189027A true JPS57189027A (en) 1982-11-20
JPH0138250B2 JPH0138250B2 (en) 1989-08-11

Family

ID=13570405

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7523781A Granted JPS57189027A (en) 1981-05-18 1981-05-18 Oscillation detector

Country Status (1)

Country Link
JP (1) JPS57189027A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61218916A (en) * 1985-03-25 1986-09-29 Matsushita Electric Ind Co Ltd Knock sensor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6281576B2 (en) 2016-01-12 2018-02-21 マツダ株式会社 Engine oil deterioration diagnosis device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61218916A (en) * 1985-03-25 1986-09-29 Matsushita Electric Ind Co Ltd Knock sensor

Also Published As

Publication number Publication date
JPH0138250B2 (en) 1989-08-11

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