JPH01107909U - - Google Patents
Info
- Publication number
- JPH01107909U JPH01107909U JP349388U JP349388U JPH01107909U JP H01107909 U JPH01107909 U JP H01107909U JP 349388 U JP349388 U JP 349388U JP 349388 U JP349388 U JP 349388U JP H01107909 U JPH01107909 U JP H01107909U
- Authority
- JP
- Japan
- Prior art keywords
- ultrasonic
- probe
- measured
- propagation medium
- change
- 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
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
Description
第１図は本考案の一実施例の構成を示す図、第
２図は従来の超音波式変位測定装置の構成を示す
図、第３図Ａは第２図の超音波パルス部を詳述す
る図。第３図Ｂは同図Ａの超音波パルスの伝播現
象を時間軸に比して示す図である。
１…距離測定用プローブ、２，２２…超音波パ
ルス、３…ノズルボツクス、４…被測定物、５…
水、６…水柱、９，２９…給水管、１０，３０…
流量調整バルブ、１２，３２…測定器、１３…演
算処理器、１５…温度計本体、２１…音速補正用
プローブ、２７…基準ギヤツプ器、２８…基準ギ
ヤツプ測定面、３１…排水管。
Fig. 1 is a diagram showing the configuration of an embodiment of the present invention, Fig. 2 is a diagram showing the configuration of a conventional ultrasonic displacement measuring device, and Fig. 3A is a detailed explanation of the ultrasonic pulse section of Fig. 2. Figure to do. FIG. 3B is a diagram showing the propagation phenomenon of the ultrasonic pulse shown in FIG. 3A in comparison with the time axis. DESCRIPTION OF SYMBOLS 1... Distance measurement probe, 2, 22... Ultrasonic pulse, 3... Nozzle box, 4... Measured object, 5...
Water, 6...Water column, 9,29...Water pipe, 10,30...
Flow rate adjustment valve, 12, 32...Measuring device, 13...Arithmetic processor, 15...Thermometer body, 21...Sound speed correction probe, 27...Reference gap device, 28...Reference gap measurement surface, 31...Drain pipe.
補正 昭６３．２．２４
実用新案登録請求の範囲を次のように補正する
。Amendment February 24, 1986 The scope of claims for utility model registration is amended as follows.
【実用新案登録請求の範囲】
液体を超音波の伝播媒体として超音波発生検出
を行なう距離測定用プローブと被測定物との間の
距離を測定する超音波式変位測定装置において、
上記距離測定用プローブとは別に設けられ、線
膨脹係数の極めて小さい素材で構成されて基準ギ
ヤツプを測定する音速補正用プローブと、
この音速補正用プローブの基準ギヤツプ中に前
記伝播媒体と同一の供給源から伝播媒体を供給し
て得た上記音速補正用プローブでの測定値から前
記伝播媒体の温度変化に起因する超音波伝播速度
の変化量を求める変化量測定手段と、
この変化量測定手段で得た変化量により上記距
離測定用プローブでの測定値を補正し、伝播媒体
中の音速変化の要因を除去した変位測定値を得る
補正手段と
を具備したことを特徴とする超音波式変位測定
装置。[Scope of Claim for Utility Model Registration] In an ultrasonic displacement measuring device that measures the distance between a distance measuring probe and an object to be measured, which performs ultrasonic generation and detection using a liquid as an ultrasonic propagation medium, A sound velocity correction probe is provided separately from the probe and is made of a material with an extremely small coefficient of linear expansion and measures a reference gap; a change amount measuring means for determining the amount of change in the ultrasonic propagation velocity caused by a temperature change in the propagation medium from a measurement value obtained by the sound speed correction probe obtained by supplying a propagation medium from a supply source; and this change amount measuring means and a correction means for correcting the measured value with the distance measuring probe using the amount of change obtained in step 1, and obtaining a measured displacement value that removes the factor of sound velocity change in the propagation medium. measuring device.
Claims (1)
を行なう距離測定用プローブと被測定物との間の
距離を測定する超音波式変位測定装置において、 上記距離測定用プローブとは別に設けられ、線
膨張係数の極めて小さい素材で構成されて基準ギ
ヤツプを測定する音速補正用プローブと、 この音速補正用プローブの基準ギヤツプ中に前
記伝播媒体と同一の供給源から伝播媒体を供給し
て得た測定値から前記伝播媒体の温度変化に起因
超音波伝播速度の変化量を求める変化量測定手段
と、 この変化量測定手段で得た変化量により上記距
離測定用プローブでの測定値を補正し、伝播媒体
中の音速変化の要因を除去した変位測定値を得る
補正手段と を具備したことを特徴とする超音波式変位測定
装置。[Scope of Claim for Utility Model Registration] In an ultrasonic displacement measuring device that measures the distance between a distance measuring probe and an object to be measured, which performs ultrasonic generation and detection using a liquid as an ultrasonic propagation medium, A sound velocity correction probe is provided separately from the probe and is made of a material with an extremely small coefficient of linear expansion and measures a reference gap; a change amount measuring means for determining the amount of change in the ultrasonic propagation velocity due to a temperature change of the propagation medium from the measured value obtained by supplying the same; An ultrasonic displacement measuring device comprising: a correction means for correcting a measured value and obtaining a measured displacement value in which factors of sound velocity changes in a propagation medium are removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP349388U JPH01107909U (en) | 1988-01-14 | 1988-01-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP349388U JPH01107909U (en) | 1988-01-14 | 1988-01-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01107909U true JPH01107909U (en) | 1989-07-20 |
Family
ID=31205174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP349388U Pending JPH01107909U (en) | 1988-01-14 | 1988-01-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01107909U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0669717U (en) * | 1993-03-12 | 1994-09-30 | 日本電信電話株式会社 | Sensor device |
| JP2006016238A (en) * | 2004-06-30 | 2006-01-19 | Toshiba Corp | Hydrogen production equipment |
-
1988
- 1988-01-14 JP JP349388U patent/JPH01107909U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0669717U (en) * | 1993-03-12 | 1994-09-30 | 日本電信電話株式会社 | Sensor device |
| JP2006016238A (en) * | 2004-06-30 | 2006-01-19 | Toshiba Corp | Hydrogen production equipment |
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