JPH02107052U - - Google Patents
Info
- Publication number
- JPH02107052U JPH02107052U JP1602689U JP1602689U JPH02107052U JP H02107052 U JPH02107052 U JP H02107052U JP 1602689 U JP1602689 U JP 1602689U JP 1602689 U JP1602689 U JP 1602689U JP H02107052 U JPH02107052 U JP H02107052U
- Authority
- JP
- Japan
- Prior art keywords
- outputs
- output
- pressure
- diaphragm
- amplifying
- 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
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Measuring Fluid Pressure (AREA)
Description
第１図は本考案の一実施例による圧力センサの
回路図、第２図ａ、第２図ｂはその出力状態を示
す図、第３図ａ、第３図ｂは従来の正圧用及び負
圧用の圧力センサの出力形態を示す図、第４図ａ
、第４図ｂは従来の正負圧共用型圧力センサの出
力特性を示す図である。
１……定電圧回路、２……定電流回路、３……
ダイヤフラム型圧力センサチツプ、４，５……演
算増幅器、６……スイツチ回路、７……比較器。
Figure 1 is a circuit diagram of a pressure sensor according to an embodiment of the present invention, Figures 2a and 2b are diagrams showing its output state, and Figures 3a and 3b are conventional pressure sensor for positive pressure and negative pressure sensors. A diagram showing the output form of a pressure sensor, Fig. 4a
, FIG. 4b is a diagram showing the output characteristics of a conventional pressure sensor for both positive and negative pressures. 1... constant voltage circuit, 2... constant current circuit, 3...
Diaphragm type pressure sensor chip, 4, 5... operational amplifier, 6... switch circuit, 7... comparator.
Claims (1)
ンサチツプと、 前記ブリツジ接続されたセンサチツプの両端の
出力差を増幅することにより正圧側の圧力変化分
を出力する第１の増幅器と、 前記ダイヤフラムのブリツジ回路の出力を反転
増幅することにより負圧側の圧力変化を出力する
第２の増幅器と、 前記第１、第２の増幅器の出力を切換えるスイ
ツチ回路と、 前記スイツチ回路の出力と所定の設定値とを比
較する比較器と、を有することを特徴とする圧力
センサ。[Claims for Utility Model Registration] A first amplifier that outputs a pressure change on the positive pressure side by amplifying the output difference between the two ends of a diaphragm-type pressure sensor chip that communicates with a pressure measuring section and the bridge-connected sensor chip. a second amplifier that outputs a pressure change on the negative pressure side by inverting and amplifying the output of the bridge circuit of the diaphragm; a switch circuit that switches the outputs of the first and second amplifiers; and an output of the switch circuit. and a comparator for comparing the value and a predetermined setting value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1602689U JPH0718988Y2 (en) | 1989-02-13 | 1989-02-13 | Pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1602689U JPH0718988Y2 (en) | 1989-02-13 | 1989-02-13 | Pressure sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02107052U true JPH02107052U (en) | 1990-08-24 |
| JPH0718988Y2 JPH0718988Y2 (en) | 1995-05-01 |
Family
ID=31228595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1602689U Expired - Lifetime JPH0718988Y2 (en) | 1989-02-13 | 1989-02-13 | Pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0718988Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03229124A (en) * | 1990-02-02 | 1991-10-11 | Yokogawa Electric Corp | Pressure transmitter |
-
1989
- 1989-02-13 JP JP1602689U patent/JPH0718988Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03229124A (en) * | 1990-02-02 | 1991-10-11 | Yokogawa Electric Corp | Pressure transmitter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0718988Y2 (en) | 1995-05-01 |
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