JPS60165812U - Automatic noise removal circuit for vortex flowmeter - Google Patents
Automatic noise removal circuit for vortex flowmeterInfo
- Publication number
- JPS60165812U JPS60165812U JP5397784U JP5397784U JPS60165812U JP S60165812 U JPS60165812 U JP S60165812U JP 5397784 U JP5397784 U JP 5397784U JP 5397784 U JP5397784 U JP 5397784U JP S60165812 U JPS60165812 U JP S60165812U
- Authority
- JP
- Japan
- Prior art keywords
- summing amplifier
- output
- noise removal
- removal circuit
- automatic noise
- 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
- Arrangements For Transmission Of Measured Signals (AREA)
- Measuring Volume Flow (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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はデュアルセンサ形のセンサ本体の断面を示す。
第２図は従来公知のデュアルセンサ形センサを使用せる
渦流量計のノイズ防止回路の接続図を示す。第３図は本
考案実施例の接続図を示゛す。
第３図において、Ｄｌ・・・第１圧電形センサ、Ｄ２・
・・第２圧電形センサ、ＡＱＩ・・・第１電荷変換器、
ＡＱ２・・・第２電荷変換器、紛−＠＊加算増幅器、Ｒ
３・・・可変抵抗、ＦＥＴ・・・電気的信号で制御可能
の可変抵抗素子、ＮＦ・・・ノイズ周波数成分選択回路
、ＦＬ−・・ノイズ周波数成分選択濾波器、ＤＴ・・・
整流回路、ＣＭ・・・比較回路。
□□FIG. 1 shows a cross section of a dual sensor type sensor body. FIG. 2 shows a connection diagram of a noise prevention circuit for a vortex flowmeter using a conventionally known dual sensor type sensor. FIG. 3 shows a connection diagram of an embodiment of the present invention. In FIG. 3, Dl...first piezoelectric sensor, D2...
...Second piezoelectric sensor, AQI...first charge converter,
AQ2...Second charge converter, summing amplifier, R
3... Variable resistor, FET... Variable resistance element that can be controlled by electrical signals, NF... Noise frequency component selection circuit, FL-... Noise frequency component selection filter, DT...
Rectifier circuit, CM...comparison circuit. □□
Claims (1)
和に対応する出力を生ずる加算増幅器を具備し、前記第
１、第２の検出信号をそれぞれ前記加算増幅器の加算点
に接続する入力抵抗の一方一 の入力抵抗は電気的信号
によって抵抗値が制御される可変抵抗素子を含み、また
前記加算増幅器の出力に接続されているノイズ周波数成
分選択回路を具備し、該選択回路の電気的出力信号によ
り前記可変抵抗素子の抵抗値を制御し前記加算増幅器・
の出力゛に含まれるノイズ成分を自動的に低減す
る渦流量計の自動ノイズ除去回路。a summing amplifier that produces an output corresponding to a weighted sum of first and second detection signals of the dual-sensor type detector, and an input that connects the first and second detection signals to a summing point of the summing amplifier, respectively; One input resistor of the resistors includes a variable resistance element whose resistance value is controlled by an electrical signal, and also includes a noise frequency component selection circuit connected to the output of the summing amplifier. The resistance value of the variable resistance element is controlled by the output signal, and the summing amplifier/
An automatic noise removal circuit for vortex flowmeters that automatically reduces noise components included in the output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5397784U JPS60165812U (en) | 1984-04-12 | 1984-04-12 | Automatic noise removal circuit for vortex flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5397784U JPS60165812U (en) | 1984-04-12 | 1984-04-12 | Automatic noise removal circuit for vortex flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60165812U true JPS60165812U (en) | 1985-11-02 |
Family
ID=30575326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5397784U Pending JPS60165812U (en) | 1984-04-12 | 1984-04-12 | Automatic noise removal circuit for vortex flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60165812U (en) |
-
1984
- 1984-04-12 JP JP5397784U patent/JPS60165812U/en active Pending
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