JPH02131638U - - Google Patents
Info
- Publication number
- JPH02131638U JPH02131638U JP4062689U JP4062689U JPH02131638U JP H02131638 U JPH02131638 U JP H02131638U JP 4062689 U JP4062689 U JP 4062689U JP 4062689 U JP4062689 U JP 4062689U JP H02131638 U JPH02131638 U JP H02131638U
- Authority
- JP
- Japan
- Prior art keywords
- thin film
- microphone
- signal
- amplifier
- tension
- 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
- 239000010409 thin film Substances 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims 1
- 230000010355 oscillation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
Description
第１図は本考案装置の一実施例のブロツク図、
第２図は従来技術を示す図、第３図は本考案の他
の実施例である。
１……ボデー、２……薄膜、３……スピーカ、
５……発振器、１０……測定回路、１２……マイ
クロフオン。
FIG. 1 is a block diagram of an embodiment of the device of the present invention.
FIG. 2 shows the prior art, and FIG. 3 shows another embodiment of the present invention. 1...Body, 2...Thin film, 3...Speaker,
5...oscillator, 10...measuring circuit, 12...microphone.
Claims (1)
装置において、薄膜に振動音を印加するスピーカ
と、前記スピーカに接続され、振動信号を増幅す
る第１の増幅器と、前記第１の増幅器に振動信号
を出力する可変周波数発振器と、印加された振動
音によつて振動する薄膜の振動音を入力するマイ
クロフオンと、前記マイクロフオンに接続され、
前記マイクロフオンからの信号を増幅する第２の
増幅器と、前記発振器の発振周波数に応じた電圧
と、前記第２の増幅器の検出信号から前記ボデー
に取付けられた前記薄膜の固有振動数を測定し、
この固有振動数から張力を求める手段を設けたこ
とを特徴とする薄膜張力測定装置。 In an apparatus for measuring the tension of a thin film stretched evenly on a body, the device includes: a speaker that applies vibration sound to the thin film; a first amplifier connected to the speaker that amplifies a vibration signal; a variable frequency oscillator that outputs a signal; a microphone that inputs vibration sound of a thin film vibrating due to the applied vibration sound; and a microphone connected to the microphone;
A second amplifier that amplifies the signal from the microphone, a voltage according to the oscillation frequency of the oscillator, and a detection signal of the second amplifier to measure the natural frequency of the thin film attached to the body. ,
A thin film tension measuring device characterized by being provided with means for determining tension from this natural frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4062689U JPH02131638U (en) | 1989-04-05 | 1989-04-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4062689U JPH02131638U (en) | 1989-04-05 | 1989-04-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02131638U true JPH02131638U (en) | 1990-11-01 |
Family
ID=31550575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4062689U Pending JPH02131638U (en) | 1989-04-05 | 1989-04-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02131638U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006098277A (en) * | 2004-09-30 | 2006-04-13 | Audio Technica Corp | Tension measuring instrument for diaphragm |
| JP2007225533A (en) * | 2006-02-27 | 2007-09-06 | Audio Technica Corp | Tension measuring device for diaphragm |
-
1989
- 1989-04-05 JP JP4062689U patent/JPH02131638U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006098277A (en) * | 2004-09-30 | 2006-04-13 | Audio Technica Corp | Tension measuring instrument for diaphragm |
| JP2007225533A (en) * | 2006-02-27 | 2007-09-06 | Audio Technica Corp | Tension measuring device for diaphragm |