JP2007298280A - 変換器用パルス幅整形回路及び渦流量計 - Google Patents
変換器用パルス幅整形回路及び渦流量計 Download PDFInfo
- Publication number
- JP2007298280A JP2007298280A JP2006123883A JP2006123883A JP2007298280A JP 2007298280 A JP2007298280 A JP 2007298280A JP 2006123883 A JP2006123883 A JP 2006123883A JP 2006123883 A JP2006123883 A JP 2006123883A JP 2007298280 A JP2007298280 A JP 2007298280A
- Authority
- JP
- Japan
- Prior art keywords
- pulse width
- pulse
- shaping circuit
- converter
- flow rate
- 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.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
- G01F1/32—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
- G01F1/3209—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters using Karman vortices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
- G01F1/32—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
- G01F1/325—Means for detecting quantities used as proxy variables for swirl
- G01F1/3287—Means for detecting quantities used as proxy variables for swirl circuits therefor
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
【解決手段】本発明の変換器用パルス幅整形回路6は、流量検出部1及び流量計数機構3間の更に波形整形装置4と誤出力防止装置5との間に設けられる。変換器用パルス幅整形回路6は、所定値以上の高周波数のパルス信号の連続入力があるとこの高周波数のパルス信号を結合して低周波数のパルス信号に変換した後、ローカット機能を有する誤出力防止装置5へ出力する。本発明では、このような変換器用パルス幅整形回路6を含む変換器2を備えて渦流量計が構成される。
【選択図】図1
Description
2 変換器
3 流量計数機構
4 波形整形装置
5 誤出力防止装置
6 パルス幅整形回路
7 フィルタ回路
8 トリガ回路
9 タイマー回路
10 カウンタ回路
11、12 ANDゲート
13 NOTゲート
Claims (3)
- 流量検出部及び流量計数機構間の更に波形整形装置と誤出力防止装置との間に設けられ、所定値以上の高周波数のパルス信号の連続入力があるとこの高周波数のパルス信号を結合して低周波数のパルス信号に変換した後、ローカット機能を有する前記誤出力防止装置へ出力する
ことを特徴とする変換器用パルス幅整形回路。 - 請求項1に記載の変換器用パルス幅整形回路において、
前記波形整形装置及び前記誤出力防止装置間で着脱自在となる装置接続部を有する
ことを特徴とする変換器用パルス幅整形回路。 - 請求項1又は請求項2に記載の変換器用パルス幅整形回路を含む変換器を備える
ことを特徴とする渦流量計。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006123883A JP4183095B2 (ja) | 2006-04-27 | 2006-04-27 | 渦流量計 |
DE602007009077T DE602007009077D1 (de) | 2006-04-27 | 2007-03-26 | Schaltung zur einstellung einer umrichter-impulsbreite und gerät zur messung exzessiver flussraten |
EP07740759A EP2009407B1 (en) | 2006-04-27 | 2007-03-26 | Converter pulse width shaping circuit and excessive flow rate meter |
CN2007800152572A CN101432598B (zh) | 2006-04-27 | 2007-03-26 | 转换器用脉冲宽度整形电路及涡式流量计 |
US12/087,368 US7946185B2 (en) | 2006-04-27 | 2007-03-26 | Converter pulse width shaping circuit and excessive vortex flow rate meter |
PCT/JP2007/057323 WO2007125725A1 (ja) | 2006-04-27 | 2007-03-26 | 変換器用パルス幅整形回路及び渦流量計 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006123883A JP4183095B2 (ja) | 2006-04-27 | 2006-04-27 | 渦流量計 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007298280A true JP2007298280A (ja) | 2007-11-15 |
JP4183095B2 JP4183095B2 (ja) | 2008-11-19 |
Family
ID=38655260
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006123883A Active JP4183095B2 (ja) | 2006-04-27 | 2006-04-27 | 渦流量計 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7946185B2 (ja) |
EP (1) | EP2009407B1 (ja) |
JP (1) | JP4183095B2 (ja) |
CN (1) | CN101432598B (ja) |
DE (1) | DE602007009077D1 (ja) |
WO (1) | WO2007125725A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102466500B (zh) * | 2010-11-19 | 2013-06-19 | 中国电子科技集团公司第五十研究所 | 脉冲式涡街流量计的输出脉冲的检测、判断装置及方法 |
FR3002846B1 (fr) | 2013-03-06 | 2016-03-25 | Vitamfero | Utilisation de souches attenuees de parasite pour la prevention et/ou le traitement de lesions oculaires associees a une infection par toxoplasma gondii |
EP3745094B1 (en) * | 2016-10-14 | 2023-06-07 | Grundfos Holding A/S | Method for evaluating a frequency spectrum |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1097031A (en) | 1976-06-22 | 1981-03-10 | Richard W. Hess | Pigmentary bright primrose yellow monoclinic bismuth vanadate and processes for the preparation thereof |
FR2384238A1 (fr) * | 1977-03-18 | 1978-10-13 | Schlumberger Compteurs | Circuit electronique pour le traitement de signaux de capteurs debitmetriques |
JPS5963520A (ja) * | 1982-10-04 | 1984-04-11 | Oval Eng Co Ltd | 超音波式渦流量計 |
WO1988000686A1 (en) * | 1986-07-17 | 1988-01-28 | Mitsubishi Denki Kabushiki Kaisha | Apparatus for measuring the amount of the air intaken by the engine |
JPS6381213A (ja) * | 1986-09-25 | 1988-04-12 | Nippon Denso Co Ltd | カルマン渦流量計の信号処理回路 |
US4934194A (en) * | 1988-03-24 | 1990-06-19 | Yokogawa Electric Corporation | Vortex flowmeter |
JPH0654245B2 (ja) * | 1988-04-19 | 1994-07-20 | 三菱電機株式会社 | 渦流量計 |
JP3144152B2 (ja) | 1993-05-14 | 2001-03-12 | 富士電機株式会社 | カルマン渦流量計 |
JPH0755518A (ja) | 1993-08-19 | 1995-03-03 | Fuji Electric Co Ltd | カルマン渦流量計 |
JP2933016B2 (ja) * | 1996-04-02 | 1999-08-09 | 横河電機株式会社 | 渦流量計 |
JP3765384B2 (ja) * | 1999-09-14 | 2006-04-12 | 横河電機株式会社 | 渦流量計 |
JP3564111B2 (ja) | 2002-03-29 | 2004-09-08 | 株式会社オーバル | 誤出力防止装置及び該装置を備えた渦流量計 |
-
2006
- 2006-04-27 JP JP2006123883A patent/JP4183095B2/ja active Active
-
2007
- 2007-03-26 DE DE602007009077T patent/DE602007009077D1/de active Active
- 2007-03-26 US US12/087,368 patent/US7946185B2/en active Active
- 2007-03-26 EP EP07740759A patent/EP2009407B1/en active Active
- 2007-03-26 WO PCT/JP2007/057323 patent/WO2007125725A1/ja active Application Filing
- 2007-03-26 CN CN2007800152572A patent/CN101432598B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
JP4183095B2 (ja) | 2008-11-19 |
EP2009407B1 (en) | 2010-09-08 |
WO2007125725A1 (ja) | 2007-11-08 |
EP2009407A1 (en) | 2008-12-31 |
EP2009407A4 (en) | 2009-04-22 |
CN101432598B (zh) | 2013-01-02 |
US20090078056A1 (en) | 2009-03-26 |
DE602007009077D1 (de) | 2010-10-21 |
US7946185B2 (en) | 2011-05-24 |
CN101432598A (zh) | 2009-05-13 |
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