JPS568544A - Method and device for detection of bubble in liquid - Google Patents
Method and device for detection of bubble in liquidInfo
- Publication number
- JPS568544A JPS568544A JP8360779A JP8360779A JPS568544A JP S568544 A JPS568544 A JP S568544A JP 8360779 A JP8360779 A JP 8360779A JP 8360779 A JP8360779 A JP 8360779A JP S568544 A JPS568544 A JP S568544A
- Authority
- JP
- Japan
- Prior art keywords
- change
- conduit
- sound field
- bubbles
- bubble
- 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
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
PURPOSE: To realize a high-accuracy detection for the bubbles in the conduit regardless of the bubbles's position, by extracting the change of the acoustic impedance caused by the bubble passing within the sound field in the form of the change of the electric impedance.
CONSTITUTION: The breathing vibration is given to the liquid flowing in conduit 1 by ultrasonic oscillator 2, and thus the sound field which becomes uniform in any direction on the cross section of conduit 1 is formed. In case some bubbles are contained into the liquid in conduit 1, the acoustic impedance changes within the sound field. Accordingly, the electric impedance of oscillator 2 itself changes, and this change component is detected. As the sound field is uniform, no fluctuation is caused to the detecting accuracy although the bubble's passing position may vary. As a result, this change is given to impedance measuring circuit 4 formed with the bridge of oscillator 2 used for one side, and the output of circuit 4 is made to pass through amplifier 5. And only the change component is extracted through detecting circuit 6 and then recorded by recorder 8 and via amplifier 7.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8360779A JPS568544A (en) | 1979-07-02 | 1979-07-02 | Method and device for detection of bubble in liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8360779A JPS568544A (en) | 1979-07-02 | 1979-07-02 | Method and device for detection of bubble in liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS568544A true JPS568544A (en) | 1981-01-28 |
Family
ID=13807163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8360779A Pending JPS568544A (en) | 1979-07-02 | 1979-07-02 | Method and device for detection of bubble in liquid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS568544A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4672639A (en) * | 1984-05-24 | 1987-06-09 | Kabushiki Kaisha Toshiba | Sampling clock pulse generator |
| JPH04186155A (en) * | 1990-11-21 | 1992-07-02 | Nippon Kotsukusu Kk | Device for sensing foreign matter in liquid |
| GB2493366B (en) * | 2011-08-02 | 2017-05-03 | Naxys As | Underwater detection apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4960596A (en) * | 1972-08-17 | 1974-06-12 |
-
1979
- 1979-07-02 JP JP8360779A patent/JPS568544A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4960596A (en) * | 1972-08-17 | 1974-06-12 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4672639A (en) * | 1984-05-24 | 1987-06-09 | Kabushiki Kaisha Toshiba | Sampling clock pulse generator |
| JPH04186155A (en) * | 1990-11-21 | 1992-07-02 | Nippon Kotsukusu Kk | Device for sensing foreign matter in liquid |
| GB2493366B (en) * | 2011-08-02 | 2017-05-03 | Naxys As | Underwater detection apparatus |
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