JPS6220305U - - Google Patents
Info
- Publication number
- JPS6220305U JPS6220305U JP11116885U JP11116885U JPS6220305U JP S6220305 U JPS6220305 U JP S6220305U JP 11116885 U JP11116885 U JP 11116885U JP 11116885 U JP11116885 U JP 11116885U JP S6220305 U JPS6220305 U JP S6220305U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- holding
- pressure sensor
- pressure
- holding command
- 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
Links
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Measurement Of Force In General (AREA)
- Measuring Fluid Pressure (AREA)
Description
第１図はこの考案の圧力検出装置の１実施例の
結線図、第２図は通常の圧力センサの等価回路図
、第３図および第４図はそれぞれ従来の圧力検出
装置の結線図である。
１……圧力センサ、１ａ〜１ｄ……ピエゾ抵抗
素子、９……定電流回路、３６……差動増幅回路
、４６……保持出力手段。
Figure 1 is a wiring diagram of one embodiment of the pressure detection device of this invention, Figure 2 is an equivalent circuit diagram of a normal pressure sensor, and Figures 3 and 4 are wiring diagrams of conventional pressure detection devices, respectively. . DESCRIPTION OF SYMBOLS 1... Pressure sensor, 1a-1d... Piezo resistance element, 9... Constant current circuit, 36... Differential amplifier circuit, 46... Holding output means.
Claims (1)
数個のピエゾ抵抗素子からなる圧力センサと、前
記圧力センサの出力端子に接続されて前記圧力セ
ンサの出力信号を増幅する増幅手段と、圧力測定
の開始直前に保持指令信号を出力する保持指令手
段と、前記保持指令信号により前記増幅手段から
の出力信号にもとづく基準信号を保持し前記圧力
センサへの圧力印加による前記増幅手段からの出
力信号と前記基準信号との差信号を出力する保持
出力手段とを備えた圧力検出装置。 a pressure sensor made up of a plurality of piezoresistive elements connected to a drive power source and forming a bridge circuit; an amplification means connected to an output terminal of the pressure sensor to amplify the output signal of the pressure sensor; and immediately before the start of pressure measurement. a holding command means for outputting a holding command signal to a holding command signal; and a holding command means for holding a reference signal based on an output signal from the amplifying means by the holding command signal, and an output signal from the amplifying means and the reference signal by applying pressure to the pressure sensor. and a holding output means for outputting a difference signal between the pressure detection device and the pressure detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985111168U JPH0431535Y2 (en) | 1985-07-20 | 1985-07-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985111168U JPH0431535Y2 (en) | 1985-07-20 | 1985-07-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6220305U true JPS6220305U (en) | 1987-02-06 |
| JPH0431535Y2 JPH0431535Y2 (en) | 1992-07-29 |
Family
ID=30990839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985111168U Expired JPH0431535Y2 (en) | 1985-07-20 | 1985-07-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0431535Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019219332A (en) * | 2018-06-21 | 2019-12-26 | 株式会社マコメ研究所 | Induction coil sensor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58140604A (en) * | 1982-02-17 | 1983-08-20 | Hitachi Ltd | Temperature compensating circuit for semiconductor strain gage |
| JPS59122923A (en) * | 1982-12-28 | 1984-07-16 | Toshiba Corp | Pressure transmitting device |
-
1985
- 1985-07-20 JP JP1985111168U patent/JPH0431535Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58140604A (en) * | 1982-02-17 | 1983-08-20 | Hitachi Ltd | Temperature compensating circuit for semiconductor strain gage |
| JPS59122923A (en) * | 1982-12-28 | 1984-07-16 | Toshiba Corp | Pressure transmitting device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019219332A (en) * | 2018-06-21 | 2019-12-26 | 株式会社マコメ研究所 | Induction coil sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0431535Y2 (en) | 1992-07-29 |
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