JPS5612516A - Oscillation sensor - Google Patents
Oscillation sensorInfo
- Publication number
- JPS5612516A JPS5612516A JP8894279A JP8894279A JPS5612516A JP S5612516 A JPS5612516 A JP S5612516A JP 8894279 A JP8894279 A JP 8894279A JP 8894279 A JP8894279 A JP 8894279A JP S5612516 A JPS5612516 A JP S5612516A
- Authority
- JP
- Japan
- Prior art keywords
- outside
- piezoelectric element
- electromotive force
- electrode
- oscillation
- 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
Links
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
PURPOSE: To raise detection sensitivity by a method wherein a piezoelectric element polarization direction is inversed so that the same polarity electromotive force may generate against a different directional strain, which generates with the point of inflection accompanying with film oscillation as a border.
CONSTITUTION: The surface of a piezoelectric element 20 are prepared with electrodes 21, 22 on its inside and outside with the point of inflection at the oscillation time as a border, while the whole back surface is provided with an electrode 23. And the polarization directions of the piezoelectric element 20 of the part of the inside electrode 21 and of the part of the outside electrode 22 are each other inversely constituted, for example, it is so made that in an outside region the positive electromotive force generates against the negative strain, while in an inside region the positive electromotive force generates against the positive strain, and the inside and outside electrodes 21 and 22 short each other through a conductor 24. Thereby the output performance improves to be able to detect the engine knocking oscillation with good sensitivity.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8894279A JPS5612516A (en) | 1979-07-13 | 1979-07-13 | Oscillation sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8894279A JPS5612516A (en) | 1979-07-13 | 1979-07-13 | Oscillation sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5612516A true JPS5612516A (en) | 1981-02-06 |
Family
ID=13956927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8894279A Pending JPS5612516A (en) | 1979-07-13 | 1979-07-13 | Oscillation sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5612516A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63132766U (en) * | 1987-02-23 | 1988-08-30 | ||
| WO2007032259A1 (en) * | 2005-09-14 | 2007-03-22 | National Institute Of Advanced Industrial Science And Technology | Piezoelectric sensor |
| JP2012032280A (en) * | 2010-07-30 | 2012-02-16 | Nec Tokin Corp | Piezoelectric acceleration sensor |
-
1979
- 1979-07-13 JP JP8894279A patent/JPS5612516A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63132766U (en) * | 1987-02-23 | 1988-08-30 | ||
| WO2007032259A1 (en) * | 2005-09-14 | 2007-03-22 | National Institute Of Advanced Industrial Science And Technology | Piezoelectric sensor |
| JP2007108161A (en) * | 2005-09-14 | 2007-04-26 | National Institute Of Advanced Industrial & Technology | Piezoelectric sensor |
| JP2012032280A (en) * | 2010-07-30 | 2012-02-16 | Nec Tokin Corp | Piezoelectric acceleration sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5667731A (en) | Knocking sensor | |
| JPS55156858A (en) | Lamination-type film structure oxygen sensor | |
| JPS5612516A (en) | Oscillation sensor | |
| JPS5310491A (en) | Oxygen concentration detector | |
| JPS5438131A (en) | Toner concentration detecting method of dry type two component developer | |
| JPS5520442A (en) | Acoustic detector | |
| JPS55143531A (en) | Acousto-optic element | |
| JPS54111873A (en) | Knocking detector for internal combustion engines | |
| JPS55126838A (en) | Tightening control method | |
| JPS5452958A (en) | Elastic surface wave device | |
| JPS5564415A (en) | Crystal vibrator | |
| JPS5694790A (en) | Magnetoelectric conversion element | |
| JPS55154460A (en) | Acoustic emission measuring method | |
| JPS5347858A (en) | Active sensor | |
| JPS57139664A (en) | Piezoelectric type acceleration detecting pickup | |
| JPS534596A (en) | Exhaust gas sensor | |
| JPS57191526A (en) | Pressure sensor | |
| JPS55160820A (en) | Vibration sensor | |
| JPS5398895A (en) | Exhaust gas sensor | |
| JPS5560804A (en) | Measuring method for film thickness | |
| JPS5416183A (en) | Probe card | |
| JPS53147594A (en) | Ion density analyzer | |
| JPS5296073A (en) | Magnetic field detecting element | |
| JPS5322476A (en) | Measuring jig | |
| JPS5552965A (en) | Surface potentiometer |