JPS6080327U - pressure gauge - Google Patents
pressure gaugeInfo
- Publication number
- JPS6080327U JPS6080327U JP13796484U JP13796484U JPS6080327U JP S6080327 U JPS6080327 U JP S6080327U JP 13796484 U JP13796484 U JP 13796484U JP 13796484 U JP13796484 U JP 13796484U JP S6080327 U JPS6080327 U JP S6080327U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- receiving element
- pressure gauge
- pressure receiving
- circuit
- 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
- Measuring Fluid Pressure (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図ａ、 ｂは従来のジルコン酸鉛による圧力測定回
路図とその動作特性線図を示す。第２図は本考案による
圧力検出器の簡略側断面図、第３図は第２図における受
圧素子４の側面図、第４図は受圧素子の振動特性線図、
第５図、第６図は本考案による検出器を用いた実施例の
測定回路図、第７図はＣ−ＭＯＳインバータ集積回路を
用いたときの発振および圧力検出回路を示す回路図であ
る。
１は入力ポート、２はダイヤフラム、３は軸、４は受圧
素子、８は整流回路、９は差動増巾回路、１６は発振回
路、１１は圧力指示器、１２は帰還抵抗、１３は出力抵
抗、１４．１５は位相反転コンデンサ、１６は反転増巾
器。Figures 1a and 1b show a conventional pressure measurement circuit diagram using lead zirconate and its operating characteristic diagram. FIG. 2 is a simplified side sectional view of the pressure detector according to the present invention, FIG. 3 is a side view of the pressure receiving element 4 in FIG. 2, and FIG. 4 is a vibration characteristic diagram of the pressure receiving element.
5 and 6 are measurement circuit diagrams of an embodiment using a detector according to the present invention, and FIG. 7 is a circuit diagram showing an oscillation and pressure detection circuit when a C-MOS inverter integrated circuit is used. 1 is an input port, 2 is a diaphragm, 3 is a shaft, 4 is a pressure receiving element, 8 is a rectifier circuit, 9 is a differential amplifier circuit, 16 is an oscillation circuit, 11 is a pressure indicator, 12 is a feedback resistor, 13 is an output resistor, 14.15 is a phase inversion capacitor, and 16 is an inversion amplifier.
Claims (6)
おき、上記受圧素子にダイヤフラムやベローズのような
伝達素子からの圧力を加えることにより上記受圧素子の
発振周波数が変化するとともに電圧や電流が変化するの
を取出してアナログ信号として処理して圧力表示を行い
圧電素子に対し素子と取付は部品全体の振動系の共振点
近傍の周波数を与えることにより電流が増加した分イン
ピーダンスは低くなることを利用するものであり、ダイ
ヤフラムやベローズヲ伝達素子として用いる場合夫々の
バネ常数は受圧素子のバネ常数よりも非常に小でヒステ
リシスや再現性の向上をはかるようにしたことを特徴と
する圧力計。(1) The pressure receiving element is electrically oscillated to give elastic vibration, and by applying pressure from a transmission element such as a diaphragm or bellows to the pressure receiving element, the oscillation frequency of the pressure receiving element changes and the voltage and The change in current is extracted and processed as an analog signal to display the pressure.The element and mounting give the piezoelectric element a frequency close to the resonance point of the vibration system of the entire component, which lowers the impedance as the current increases. This pressure gauge is characterized in that when a diaphragm or a bellows is used as a transmission element, the spring constant of each is much smaller than that of the pressure receiving element to improve hysteresis and reproducibility. .
を用いて発振回路の一部を構成するようにしたことを特
徴とする実用新案登録請求の範囲第１項記載の圧力計。(2) The pressure gauge according to claim 1, which is a registered utility model, characterized in that a crystal oscillator or lead zirconate is used as the pressure receiving element to constitute a part of the oscillation circuit.
らの発振電圧を加えるようにしたことを特徴とする実用
新案登録請求の範囲第１項記載の圧力計。(3) The pressure gauge according to claim 1, which is a registered utility model, characterized in that lead zirconate is used as the pressure receiving element to apply an oscillation voltage from an oscillation circuit.
振周波数を調整するようにしたことを特徴とする実用新
案登録請求の範囲第１項ないし第４項のいずれかに記載
の圧力計。(4) The pressure gauge according to any one of claims 1 to 4 of the claims for registration as a utility model, characterized in that the oscillation frequency of the pressure receiving element is adjusted by adjusting the capacitance included in the oscillation circuit. .
、発振回路出力側に直列に抵抗と受圧素子を接続して振
動を与えるようにしたことを特徴とすぬる実用新案登録
請求の範囲第３項記載の圧力計。(5) When lead zirconate is used as a pressure-receiving element, a resistor and a pressure-receiving element are connected in series on the output side of an oscillation circuit to apply vibrations. Claim 3 Pressure gauge listed.
、差動増巾回路の一方の入力として与え、他方の入力側
には可変抵抗を接続して測定基準を調整するようにした
ことを特徴とする実用新案登録請求の範囲第１項記載の
圧力計。(6) The output of the oscillator circuit is converted to a DC voltage using a rectifier circuit, which is fed to one input of the differential amplification circuit, and a variable resistor is connected to the other input side to adjust the measurement standard. A pressure gauge according to claim 1 of the utility model registration claim characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13796484U JPS6080327U (en) | 1984-09-13 | 1984-09-13 | pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13796484U JPS6080327U (en) | 1984-09-13 | 1984-09-13 | pressure gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6080327U true JPS6080327U (en) | 1985-06-04 |
Family
ID=30309714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13796484U Pending JPS6080327U (en) | 1984-09-13 | 1984-09-13 | pressure gauge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6080327U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4578622B2 (en) * | 2000-05-26 | 2010-11-10 | 富士重工業株式会社 | Pressure measuring device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5031879A (en) * | 1973-07-19 | 1975-03-28 | ||
| JPS5278483A (en) * | 1975-12-25 | 1977-07-01 | Toray Industries | Method of measuring force |
-
1984
- 1984-09-13 JP JP13796484U patent/JPS6080327U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5031879A (en) * | 1973-07-19 | 1975-03-28 | ||
| JPS5278483A (en) * | 1975-12-25 | 1977-07-01 | Toray Industries | Method of measuring force |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4578622B2 (en) * | 2000-05-26 | 2010-11-10 | 富士重工業株式会社 | Pressure measuring device |
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