JPH036537U - - Google Patents
Info
- Publication number
- JPH036537U JPH036537U JP6709489U JP6709489U JPH036537U JP H036537 U JPH036537 U JP H036537U JP 6709489 U JP6709489 U JP 6709489U JP 6709489 U JP6709489 U JP 6709489U JP H036537 U JPH036537 U JP H036537U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- oscillation circuit
- pressure sensor
- diaphragm
- displaces
- 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
- 230000010355 oscillation Effects 0.000 claims 4
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
Description
第１図は、この考案の一実施例を示す圧力検出
器の回路接続図、第２図は、圧力検出器に使用さ
れる静電容量式圧力センサの断面図、第３図、第
４図は、静電容量式圧力センサを使用する従来の
圧力検出器を示す回路接続図である。
２：固定電極、４：ダイヤフラム、５：可動電
極、１１：シユミツトトリガゲート回路、ＰＳ：
可変コンデンサ（圧力センサ）。
Fig. 1 is a circuit connection diagram of a pressure detector showing an embodiment of this invention, Fig. 2 is a sectional view of a capacitive pressure sensor used in the pressure detector, Figs. 3 and 4. 1 is a circuit connection diagram showing a conventional pressure detector using a capacitive pressure sensor. 2: Fixed electrode, 4: Diaphragm, 5: Movable electrode, 11: Schmitt trigger gate circuit, PS:
Variable capacitor (pressure sensor).
Claims (1)
イヤフラムに固着し圧力に応じて変位する可動電
極と、固定電極とからなる静電容量式圧力センサ
を備え、この静電容量式圧力センサの静電容量を
発振回路に含み、圧力に応じて発振回路の周波数
を変化させる圧力検出器において、 前記発振回路としてシユミツトトリガゲート回
路を含むＣＲ発振回路を使用したことを特徴とす
る圧力検出器。[Claims for Utility Model Registration] A capacitive pressure sensor consisting of a diaphragm that displaces in response to pressure, a movable electrode that is fixed to the diaphragm and displaces in response to pressure, and a fixed electrode. A pressure sensor that includes a capacitance of a type pressure sensor in an oscillation circuit and changes the frequency of the oscillation circuit according to pressure, characterized in that a CR oscillation circuit including a Schmitt trigger gate circuit is used as the oscillation circuit. Pressure detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6709489U JPH036537U (en) | 1989-06-08 | 1989-06-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6709489U JPH036537U (en) | 1989-06-08 | 1989-06-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH036537U true JPH036537U (en) | 1991-01-22 |
Family
ID=31600367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6709489U Pending JPH036537U (en) | 1989-06-08 | 1989-06-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH036537U (en) |
-
1989
- 1989-06-08 JP JP6709489U patent/JPH036537U/ja active Pending
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