JPS61182853U - - Google Patents
Info
- Publication number
- JPS61182853U JPS61182853U JP6795885U JP6795885U JPS61182853U JP S61182853 U JPS61182853 U JP S61182853U JP 6795885 U JP6795885 U JP 6795885U JP 6795885 U JP6795885 U JP 6795885U JP S61182853 U JPS61182853 U JP S61182853U
- Authority
- JP
- Japan
- Prior art keywords
- water
- water bottom
- distance
- frequency
- depth
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 9
- 238000001514 detection method Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Description
第１図は本案の実施例を示すブロツク図、第２
図は第１図要部の電気的波形図である。
６……水底波選出器、８……ゲート波生成回路
、１０……深度設定器、１１……水底距離検出器
、１２……ゲート距離算出器、１５……周波数差
成分検出器、１７……潮流演算器。
Figure 1 is a block diagram showing an example of the present invention;
The figure is an electrical waveform diagram of the main part of Figure 1. 6... Bottom wave selector, 8... Gate wave generation circuit, 10... Depth setter, 11... Bottom distance detector, 12... Gate distance calculator, 15... Frequency difference component detector, 17... ...Tide flow calculator.
Claims (1)
方に対し超音波パルスを発射し、設定深度の水魂
反射波並びに水底反射波に基づいて上記設定深度
における流速を測定する装置において、上記水底
反射波に基づいて水底までの距離を検出する手段
と、水底を基準とした測定目的深度（距離）を設
定する深度設定器と、上記水底距離と上記設定深
度との差を算出するゲート距離算出手段と、その
ゲート距離算出手段の出力によりゲート発生時刻
が制御される水魂反射波用ゲート回路と、上記水
底反射波が有する周波数と上記水魂反射波が有す
る周波数の差成分を検出する周波数差成分検出手
段と、その周波数差成分に基づき流速値を表示す
る表示器とを具備することを特徴とする超音波潮
流計。 In a device for emitting ultrasonic pulses diagonally downward from an ultrasonic pulse emitting means provided on a ship's hull, and measuring the flow velocity at the set depth based on water soul reflected waves and water bottom reflected waves at a set depth, the water bottom reflected waves means for detecting the distance to the water bottom based on the water bottom, a depth setting device for setting a measurement target depth (distance) based on the water bottom, and a gate distance calculation means for calculating the difference between the water bottom distance and the set depth. , a water soul reflected wave gate circuit whose gate generation time is controlled by the output of the gate distance calculation means, and a frequency difference component that detects a difference component between a frequency of the bottom reflected wave and a frequency of the water soul reflected wave. An ultrasonic tidal current meter comprising a detection means and a display that displays a flow velocity value based on the frequency difference component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985067958U JPH039020Y2 (en) | 1985-05-08 | 1985-05-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985067958U JPH039020Y2 (en) | 1985-05-08 | 1985-05-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61182853U true JPS61182853U (en) | 1986-11-14 |
| JPH039020Y2 JPH039020Y2 (en) | 1991-03-06 |
Family
ID=30602265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985067958U Expired JPH039020Y2 (en) | 1985-05-08 | 1985-05-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH039020Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0312557A (en) * | 1989-06-12 | 1991-01-21 | Marine Instr Co Ltd | Ultrasonic tidal current measuring instrument |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6018767A (en) * | 1983-07-12 | 1985-01-30 | Tomoyoshi Takeuchi | Ultrasonic flowmeter |
-
1985
- 1985-05-08 JP JP1985067958U patent/JPH039020Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6018767A (en) * | 1983-07-12 | 1985-01-30 | Tomoyoshi Takeuchi | Ultrasonic flowmeter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0312557A (en) * | 1989-06-12 | 1991-01-21 | Marine Instr Co Ltd | Ultrasonic tidal current measuring instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH039020Y2 (en) | 1991-03-06 |
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