JPS61176452U - - Google Patents
Info
- Publication number
- JPS61176452U JPS61176452U JP6117385U JP6117385U JPS61176452U JP S61176452 U JPS61176452 U JP S61176452U JP 6117385 U JP6117385 U JP 6117385U JP 6117385 U JP6117385 U JP 6117385U JP S61176452 U JPS61176452 U JP S61176452U
- Authority
- JP
- Japan
- Prior art keywords
- ultrasonic
- wave
- depth
- detector
- gate
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Description
第１図は本考案の実施例を示すブロツク図、第
２図は本案の原理説明のための正面図である。
１……船体、６……海底波検出器、８……ゲー
ト波生成回路、１０……深度設定器、１１……船
体傾斜角検出器、１２……俯角検出器、１３……
ゲート距離算出器、１７……潮流演算器。
FIG. 1 is a block diagram showing an embodiment of the invention, and FIG. 2 is a front view for explaining the principle of the invention. 1... Hull, 6... Bottom wave detector, 8... Gate wave generation circuit, 10... Depth setter, 11... Hull inclination angle detector, 12... Depression angle detector, 13...
Gate distance calculator, 17... tidal flow calculator.
Claims (1)
方に対し俯角θで超音波パルスを発射し、垂直下
方成分に換算して深度Ｄにおける潮流速度を測定
する装置において、深度Ｄの深度設定器と、船体
の上記超音波パルス発射方向における傾斜角を検
出する船体傾斜角検出器と、該傾斜角検出器の出
力に基づいて上記俯角θを算出する俯角検出器と
、上記深度設定器と俯角検出器の両出力に基づき
（Ｄ／ｃｏｓθ）を算出するゲート距離算出器と
、上記超音波パルスの発射時刻から上記ゲート距
離を超音波が往復する時間経過後に所定時間持続
するゲート波生成回路と、上記超音波パルスに対
する海底波選出器と、上記ゲート波の存在期間中
に到来する対水反射波の検出器と、上記海底波選
出器及び対水反射波検出器の両検出器出力に基づ
いて、深度Ｄにおける潮流を演算する潮流演算器
を有してなる舶用精密超音波流速計。 A device for emitting ultrasonic pulses vertically downward at an angle of depression θ from an ultrasonic pulse emitting means provided on the hull, and measuring the tidal current speed at a depth D by converting the ultrasonic pulse into a vertically downward component, comprising: a depth setting device for the depth D; A hull inclination angle detector that detects the inclination angle of the hull in the ultrasonic pulse emission direction, a depression angle detector that calculates the depression angle θ based on the output of the inclination angle detector, the depth setting device and the depression angle detector. a gate distance calculator that calculates (D/cos θ) based on both outputs; a gate wave generation circuit that continues for a predetermined period of time after the ultrasonic wave travels back and forth over the gate distance from the emission time of the ultrasonic pulse; Based on the outputs of a submarine wave selector for ultrasonic pulses, a detector for water reflected waves arriving during the existence period of the gate wave, and the outputs of both the submarine wave selector and water reflected wave detector, A marine precision ultrasonic current meter comprising a tidal flow calculator that calculates tidal currents at a depth D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6117385U JPS61176452U (en) | 1985-04-24 | 1985-04-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6117385U JPS61176452U (en) | 1985-04-24 | 1985-04-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61176452U true JPS61176452U (en) | 1986-11-04 |
Family
ID=30589202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6117385U Pending JPS61176452U (en) | 1985-04-24 | 1985-04-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61176452U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59230165A (en) * | 1983-06-13 | 1984-12-24 | Marine Instr Co Ltd | Measuring method of current speed and current direction by ultrasonic current and direction meter |
-
1985
- 1985-04-24 JP JP6117385U patent/JPS61176452U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59230165A (en) * | 1983-06-13 | 1984-12-24 | Marine Instr Co Ltd | Measuring method of current speed and current direction by ultrasonic current and direction meter |
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