JPH0220172U - - Google Patents
Info
- Publication number
- JPH0220172U JPH0220172U JP6900489U JP6900489U JPH0220172U JP H0220172 U JPH0220172 U JP H0220172U JP 6900489 U JP6900489 U JP 6900489U JP 6900489 U JP6900489 U JP 6900489U JP H0220172 U JPH0220172 U JP H0220172U
- Authority
- JP
- Japan
- Prior art keywords
- output
- guide pipe
- fluid guide
- oscillator
- fluid
- 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
- 239000012530 fluid Substances 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Landscapes
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Description
第１図は本考案の一実施例に係る流体通流検知
システムを水道水通流検知に適用した例を模式的
に示す図、第２図は同実施例における音響センサ
の横断面図、第３図は同音響センサの等価回路図
、第４図は同実施例における判断装置の構成説明
図、第５図は同実施例における各部波形を示す図
である。
１……配管、１１……音響センサ、３１……判
断装置、３９……表示装置。
FIG. 1 is a diagram schematically showing an example in which a fluid flow detection system according to an embodiment of the present invention is applied to tap water flow detection, and FIG. 2 is a cross-sectional view of an acoustic sensor in the same embodiment. FIG. 3 is an equivalent circuit diagram of the same acoustic sensor, FIG. 4 is an explanatory diagram of the configuration of the determination device in the same embodiment, and FIG. 5 is a diagram showing waveforms of various parts in the same embodiment. 1... Piping, 11... Acoustic sensor, 31... Judgment device, 39... Display device.
Claims (1)
体が通流したとき上記流体案内用配管内に音響が
発生する部分近傍で、かつ上記流体案内用配管の
外面に装着された圧電素子内蔵の音響センサと、
一定周期の出力パルスを送出する発信器と、この
発信器の出力パルス送出時点を基準にし、上記出
力パルスの時間間隔に対して前記音響センサから
出力される出力信号のうち振幅レベルが一定以上
の出力信号部分の期間の割合が所定値以上になつ
た時点で出力を送出する手段と、この手段から出
力が送出された時点より前記発信器の周期以上の
期間、報知動作を行なう手段とを具備してなるこ
とを特徴とする流体通流検知システム。 A fluid guide pipe and a piezoelectric element built-in which is mounted on the outer surface of the fluid guide pipe near the part where sound is generated in the fluid guide pipe when fluid flows through the fluid guide pipe. an acoustic sensor;
An oscillator that sends out output pulses of a constant period, and an output signal that has an amplitude level above a certain level among the output signals output from the acoustic sensor for the time interval of the output pulses, based on the time point at which the output pulses of this oscillator are sent out. The transmitter includes means for transmitting an output when the ratio of the period of the output signal portion reaches a predetermined value or more, and means for performing a notification operation for a period equal to or longer than the cycle of the oscillator from the time when the output is transmitted from the means. A fluid flow detection system characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6900489U JPH0311740Y2 (en) | 1989-06-15 | 1989-06-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6900489U JPH0311740Y2 (en) | 1989-06-15 | 1989-06-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0220172U true JPH0220172U (en) | 1990-02-09 |
| JPH0311740Y2 JPH0311740Y2 (en) | 1991-03-20 |
Family
ID=31294298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6900489U Expired JPH0311740Y2 (en) | 1989-06-15 | 1989-06-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0311740Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6457289B2 (en) * | 2015-02-09 | 2019-01-23 | 株式会社リニア・サーキット | Use detection sensor for water supply |
-
1989
- 1989-06-15 JP JP6900489U patent/JPH0311740Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0311740Y2 (en) | 1991-03-20 |
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