JP2007030789A - Structure of buoy for measuring wave height - Google Patents

Structure of buoy for measuring wave height Download PDF

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JP2007030789A
JP2007030789A JP2005220071A JP2005220071A JP2007030789A JP 2007030789 A JP2007030789 A JP 2007030789A JP 2005220071 A JP2005220071 A JP 2005220071A JP 2005220071 A JP2005220071 A JP 2005220071A JP 2007030789 A JP2007030789 A JP 2007030789A
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buoy
flange
peak value
measuring
trunk
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Yasuyoshi Miyazaki
泰義 宮崎
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Kenwood KK
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Kenwood KK
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a buoy for measuring the wave height which is compact, low in the manufacturing cost, and capable of correctly measuring the wave height. <P>SOLUTION: The distance to a leading tip from a vertical axis of a flange 2 extending on a plane orthogonal to the vertical axis from the circumference of a barrel part 1 is set to be 1.3 times or larger in comparison with the radius of the maximum circumscribed circle of the barrel part 1. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

この発明は海面に浮かべて漂流させるブイに係わり、特に、その波高値測定用ブイの構造に関する。   The present invention relates to a buoy that floats and drifts on the sea surface, and more particularly to the structure of a buoy for measuring the peak value.

従来から海面に漂流状態に浮かべ海上の気圧、水温等の各種データを測定し、また、自位置をＧＰＳ受信機で求めそれらのデータを送信するブイが使用されている。そのようなブイの例を図４に示す。このデータ測定用ブイ４０は胴部が球形胴部１となっており、風の影響や潮流の影響を受けにくいように胴部の半径ｒに対して１．１ｒ程度の半径の小径のフランジ７が胴部の喫水線から延びている。また、フランジが設けられていないものもあった。そして、このようなデータ測定用ブイ４０は海上の気圧・水温、位置等を測定するもので、波の高さを測定するものは少なかった。   Conventionally, a buoy is used which measures various data such as atmospheric pressure and water temperature floating on the sea surface while drifting, and obtains its position with a GPS receiver and transmits the data. An example of such a buoy is shown in FIG. The data measuring buoy 40 has a barrel portion 1 that is a spherical barrel portion 1, and has a small diameter flange 7 having a radius of about 1.1 r with respect to the radius r of the barrel portion so as not to be affected by wind and tidal currents. Extends from the waterline of the trunk. In some cases, no flange was provided. Such data measurement buoys 40 measure the atmospheric pressure, water temperature, position, etc. at sea, and few measure the wave height.

特開平６１−２１２７２９号公報に提案されたブイもリング状物体（フランジ）の半径は小さいものであった。   The buoy proposed in Japanese Patent Application Laid-Open No. 61-212729 also has a small radius of the ring-shaped object (flange).

波高値を測定する目的のブイは図７（ａ）に示すように、波高値測定用ブイ５０を構成する円筒形胴部８の中にジャイロ付Ｇセンサ１１（加速度計）がオイルを満たした容器中に封入されている。円筒形胴部８の上部にはフランジ９が設けられている。円筒形胴部８の頂部中央には送信用のアンテナ１０が設けられている。他のブイにもアンテナが胴部の頂部中央に設けられているが図示を省略している。   As shown in FIG. 7A, the buoy for measuring the peak value is filled with oil by the G sensor 11 (accelerometer) with gyroscope in the cylindrical body portion 8 constituting the peak value measuring buoy 50. Enclosed in a container. A flange 9 is provided on the upper portion of the cylindrical body 8. A transmitting antenna 10 is provided at the center of the top of the cylindrical body 8. Other buoys are also provided with an antenna at the center of the top of the trunk, but are not shown.

この波高値測定用ブイ５０は円筒形胴部８が静止した状態の垂直軸から傾斜するように揺れてもジャイロ付Ｇセンサ（加速度計）１１自体は揺れない状態に保たれる。図７（ｂ）に円筒形胴部８が揺れたときの加速度を矢印Ｇ１の長さで示し、そのときのジャイロ付Ｇセンサ１１の加速度を矢印Ｇの長さで示している。   Even if the crest 50 for measuring the crest value is swung so as to be inclined from the vertical axis in a state where the cylindrical body portion 8 is stationary, the G sensor (accelerometer) 11 with gyroscope itself is kept in a state where it does not swing. FIG. 7B shows the acceleration when the cylindrical body 8 is shaken by the length of the arrow G1, and the acceleration of the G sensor 11 with the gyro at that time is shown by the length of the arrow G.

上記した図４に示すデータ測定用ブイ４０は、波高値を測定する場合、波面が沈みこむときは、波面が谷になる途中でブイが下動し下方向の慣性力を生じる。そのため波面が最下面となったときに慣性力により波面よりさらに沈みこむ。この状態が図５に示されている。図５に一点鎖線で波面３の谷に一致したフランジ７の位置を示し、実線で慣性力で波面３が沈みこんだ最下位置のフランジ７の位置を示している。   The above-described data measuring buoy 40 shown in FIG. 4 is used to measure the crest value, and when the wavefront sinks, the buoy moves down in the middle of the wavefront to generate a downward inertial force. Therefore, when the wave front becomes the lowermost surface, it sinks further than the wave front due to inertial force. This state is shown in FIG. FIG. 5 shows the position of the flange 7 that coincides with the valley of the wavefront 3 with a one-dot chain line, and shows the position of the flange 7 at the lowest position where the wavefront 3 sinks due to inertial force with a solid line.

すなわち、慣性力によりデータ測定用ブイ４０は実際の波面３の谷の位置を示す位置より図示Ｄの距離だけ低い位置となる。同様にデータ測定用ブイ４０は実際の波面の山の位置を示す位置より慣性力で高い位置となる。   In other words, due to the inertial force, the data measurement buoy 40 is at a position lower than the position indicating the actual valley position of the wavefront 3 by a distance D. Similarly, the data measurement buoy 40 has a higher inertial force than the position indicating the actual peak position of the wavefront.

また、周期の長い波ではデータ測定用ブイ４０の揺れは小さいが、周期の短い波ではデータ測定用ブイ４０が振り子のように横揺れする。図６（ａ）にデータ測定用ブイ４０が波面３に従って動き横揺れしていない状態を示し、図６（ｂ）にデータ測定用ブイ４０が波面３に対して横揺れした状態を示している。   The data measurement buoy 40 oscillates with a long period wave, but the data measurement buoy 40 oscillates like a pendulum with a short period wave. FIG. 6A shows a state in which the data measurement buoy 40 does not move and roll according to the wavefront 3, and FIG. 6B shows a state in which the data measurement buoy 40 rolls with respect to the wavefront 3. .

図６（ａ）にはデータ測定用ブイ４０が横揺れしないときの加速度の値を矢印Ｇの長さで示し、図６（ｂ）にはデータ測定用ブイ４０が横揺れしたときの加速度の値を矢印Ｇ１の長さで示している。加速度の値を２回時間で積分すると波の高さが得られるが図４で示す従来のデータ測定用ブイは上記したように慣性の力や揺れの影響を受けて実際の波高値が得にくいため波高値測定用として用いられることは少なかった。   FIG. 6A shows the acceleration value when the data measurement buoy 40 does not roll by the length of the arrow G, and FIG. 6B shows the acceleration value when the data measurement buoy 40 rolls. The value is indicated by the length of the arrow G1. When the acceleration value is integrated twice in time, the wave height can be obtained. However, as described above, the conventional data measurement buoy shown in FIG. 4 is difficult to obtain the actual wave height value due to the influence of inertia force and shaking. Therefore, it was rarely used for measuring the peak value.

図７（ａ）に示す従来の波高値測定用のブイは図７（ｂ）に示すように波面３が傾斜してブイが揺れたときもジャイロ付Ｇセンサ１１が姿勢を変えないため、揺れの影響を受けない波高値のデータを送信できる。しかしながらこのジャイロ付Ｇセンサ１１のジャイロは部品点数が多く組み立て精度を必要とするため、熟練した組み立て作業員が必要であり、製造コストが高くなる上に、ジャイロの重量も大きくなるため、ブイが大型化してしまうという問題があった。
特開平６１−２１２７２９号公報、明細書第２頁、左下欄、第２図 7A, since the G sensor 11 with the gyro does not change the posture even when the wave front 3 is inclined and the buoy is shaken as shown in FIG. Can transmit peak value data that is not affected by. However, since the gyro of the G sensor 11 with the gyro has a large number of parts and requires assembly accuracy, a skilled assembly worker is required, and the manufacturing cost is increased and the weight of the gyro is increased. There was a problem of increasing the size.
JP-A-61-212729, specification, page 2, lower left column, FIG.

この発明は上記した点に鑑みてなされたものであって、その目的とするところは、小形で製造コストが安く、しかも波高値を正確に測定できる波高値測定用ブイを提供することにある。   The present invention has been made in view of the above points, and an object of the present invention is to provide a peak value measuring buoy capable of measuring a peak value accurately with a small size and low manufacturing cost.

この発明の波高値測定用ブイは胴部の周囲から垂直軸に直交する面上に延びるフランジの垂直軸から先端迄の距離を胴部の最大外接円半径の１．３倍以上としたものである
また、前記波高値測定用ブイにおいて、前記胴部が角柱形または円筒形であり、前記フランジが前記胴部の喫水線から延びるように形成されたものである。 The crest measuring buoy according to the present invention is such that the distance from the vertical axis to the tip of the flange extending on the surface perpendicular to the vertical axis from the periphery of the trunk is 1.3 times or more of the maximum circumscribed circle radius of the trunk. In addition, in the peak value measurement buoy, the trunk portion is formed in a prismatic shape or a cylindrical shape, and the flange is formed so as to extend from a water line of the trunk portion.

また、同波高値測定用ブイにおいて、前記胴部が球形であり、前記フランジが前記胴部の喫水線から延びる胴部と同軸のドーナツ形円板状に形成されたものである。   Further, in the same peak height measurement buoy, the trunk portion is spherical, and the flange is formed in a donut-shaped disk shape coaxial with the trunk portion extending from the draft line of the trunk portion.

また、前記各波高値測定用ブイにおいて、前記喫水線から延びるフランジに加えて水中部分にも胴部の周囲から垂直軸に直交する面上に延びるフランジが設けられているものである。   Further, in each of the crest measuring buoys, in addition to the flange extending from the water line, a flange extending on the surface perpendicular to the vertical axis from the periphery of the trunk is also provided in the underwater portion.

この発明の波高値測定用ブイによれば、小形で製造コストが安く、しかも波高値を正確に測定できる。   According to the buoy for measuring a crest value of the present invention, the crest value can be accurately measured with a small size and a low manufacturing cost.

以下この発明を実施するための最良の形態を実施例に即して説明する。   The best mode for carrying out the present invention will be described below with reference to examples.

図１はこの発明の実施例１である波高値測定用ブイ２０を示す正面図である。図に示す１は球形胴部であり、その喫水線から延びるようにドーナツ形円板状のフランジ２が設けられている。このフランジの半径は図１に示すように球形胴部１の半径ｒの略１．４倍となっている。なお、従来のフランジ付のブイのフランジの半径は前述したように球形胴部の半径ｒの１．１倍程度であった。   FIG. 1 is a front view showing a peak value measuring buoy 20 according to Embodiment 1 of the present invention. 1 shown in the figure is a spherical body, and a donut-shaped disc-shaped flange 2 is provided so as to extend from the water line. The radius of this flange is about 1.4 times the radius r of the spherical body 1 as shown in FIG. In addition, the radius of the flange of the conventional buoy with a flange was about 1.1 times the radius r of the spherical trunk | drum, as mentioned above.

このように大きいフランジが付いているために、フランジ２に対する海水の抵抗により慣性による沈み込み量が小さくなり、図２（ａ）に示すように波面３の底の位置とフランジ２の位置が略一致する。また、フランジ２の動きに対して海水がダンパーとして作用するため、図２（ｂ）に示すようにフランジ２が波面３と略一致して横揺れが小さくなり、図示の矢印で示すように略正確に加速度の測定値Ｇが得られる。   Because of such a large flange, the amount of subsidence due to inertia is reduced due to the resistance of seawater to the flange 2, and the bottom position of the wavefront 3 and the position of the flange 2 are substantially as shown in FIG. Match. Further, since seawater acts as a damper with respect to the movement of the flange 2, the flange 2 substantially coincides with the wavefront 3 as shown in FIG. An acceleration measurement value G can be obtained accurately.

このように実施例１の波高値測定用ブイはジャイロを用いていないため、小形で製造コストが安くなり、しかも正確な波高さが得られる。   As described above, the peak value measuring buoy of the first embodiment does not use a gyro, so that the buoy is small and the manufacturing cost is low, and an accurate wave height can be obtained.

図３（ａ）はこの発明の実施例２である波高値測定用ブイ３０を示す平面図、図３（ｂ）は同波高値測定用ブイ３０を示す正面図、図３（ｃ）は同波高値測定用ブイ３０を示す底面図である。この例では図３（ｂ）に示すように円筒形胴部４の喫水線（波面３上）から円周方向等間隔に４個の喫水線フランジ５、５…が延びている。   3A is a plan view showing a peak value measuring buoy 30 according to Embodiment 2 of the present invention, FIG. 3B is a front view showing the peak value measuring buoy 30, and FIG. It is a bottom view showing a peak value measurement buoy 30. In this example, as shown in FIG. 3B, four waterline flanges 5, 5... Extend from the waterline (on the wavefront 3) of the cylindrical body 4 at equal intervals in the circumferential direction.

喫水線フランジ５の先端と円筒形胴部４の垂直軸迄の距離は円筒形胴部の半径の略１．７倍となっている。この例では海中の部分に延びる小形の海中フランジ６、６…が設けられている。このように海中に設けられた海中フランジ６、６…も揺れや上下動に対するダンパー作用があり、さらに、重心を低くすることにより、揺れを小さくする効果も奏する。   The distance between the tip of the waterline flange 5 and the vertical axis of the cylindrical body 4 is approximately 1.7 times the radius of the cylindrical body. In this example, small underwater flanges 6, 6... Extending in the underwater portion are provided. In this way, the underwater flanges 6, 6... Provided in the sea also have a damper action against shaking and vertical movement, and further, by lowering the center of gravity, there is an effect of reducing the shaking.

実施例は以上のように構成されているが発明はこれに限られず、例えば、フランジの形状は四角、三角、楕円等の形状であってもよく、全周が繋がっていても切り欠かれていてもよい。また、ブイの胴部の形状は球形、円筒形以外の円錐形状、回転楕円形状、直方体等の形状であってもこの発明の効果が得られる。   The embodiment is configured as described above, but the invention is not limited to this. For example, the shape of the flange may be a square, a triangle, an ellipse, or the like, and the whole circumference is notched. May be. Further, the effect of the present invention can be obtained even when the shape of the body of the buoy is a spherical shape, a conical shape other than a cylindrical shape, a spheroidal shape, a rectangular parallelepiped shape or the like.

この発明の実施例１である波高値測定用ブイを示す正面図である。1 is a front view showing a peak value measurement buoy that is Embodiment 1 of the present invention. FIG. 図２（ａ）は同波高値測定用ブイの使用状態の例を示す正面図、図２（ｂ）は同波高値測定用ブイの使用状態の他の例を示す正面図である。FIG. 2A is a front view showing an example of the usage state of the same peak value measurement buoy, and FIG. 2B is a front view showing another example of the usage state of the same peak value measurement buoy. 図３（ａ）はこの発明の実施例２である波高値測定用ブイを示す平面図、図３（ｂ）は同波高値測定用ブイを示す正面図、図３（ｃ）は同波高値測定用ブイを示す底面図である。3 (a) is a plan view showing a peak value measuring buoy according to Embodiment 2 of the present invention, FIG. 3 (b) is a front view showing the same peak value measuring buoy, and FIG. 3 (c) is the same peak value. It is a bottom view showing a measurement buoy. 従来のデータ測定用ブイの例を示す正面図である。It is a front view which shows the example of the conventional data measurement buoy. 同データ測定用ブイの使用状態の例を示す正面図である。It is a front view which shows the example of the use condition of the buoy for data measurement. 同データ測定用ブイの使用状態の他の例を示す正面図である。It is a front view which shows the other example of the use condition of the same data measurement buoy. 図７（ａ）は従来の波高値測定用ブイの例を示す正面図である。図７（ｂ）は同波高値測定用ブイの使用状態の例を示す正面図である。FIG. 7A is a front view showing an example of a conventional peak value measurement buoy. FIG.7 (b) is a front view which shows the example of the use condition of the buoy for the same peak value measurement.

符号の説明Explanation of symbols

１ 球形胴部
２ フランジ
３ 波面
４ 円筒形胴部
５ 喫水線フランジ
６ 海中フランジ
７ フランジ
８ 円筒形胴部
９ フランジ
１０ アンテナ
１１ ジャイロ付Ｇセンサ
２０ 波高値測定用ブイ
３０ 波高値測定用ブイ
４０ データ測定用ブイ
５０ 波高値測定用ブイ DESCRIPTION OF SYMBOLS 1 Spherical torso 2 Flange 3 Wave front 4 Cylindrical torso 5 Water line flange 6 Underwater flange 7 Flange 8 Cylindrical torso 9 Flange 10 Antenna 11 G sensor with gyro 20 Wave height measurement buoy 30 Wave height measurement buoy 40 Data measurement 50 buoy for peak value measurement

Claims (4)

胴部の周囲から垂直軸に直交する面上に延びるフランジの垂直軸から先端迄の距離が胴部の最大外接円半径の１．３倍以上であることを特徴とする波高値測定用ブイの構造。 A wave height measuring buoy characterized in that the distance from the vertical axis to the tip of the flange extending on the plane perpendicular to the vertical axis from the periphery of the trunk is 1.3 times or more of the maximum circumscribed circle radius of the trunk. Construction. 前記胴部が角柱形または円筒形であり、前記フランジが前記胴部の喫水線から延びるように形成された請求項１の波高値測定用ブイの構造。 2. The structure of a peak value measurement buoy according to claim 1, wherein the trunk portion is prismatic or cylindrical, and the flange is formed so as to extend from a water line of the trunk portion. 前記胴部が球形であり、前記フランジが前記胴部の喫水線から延びる胴部と同軸のドーナツ形円板状に形成された請求項１の波高値測定用ブイの構造。 2. The structure of a peak value measuring buoy according to claim 1, wherein the body is spherical and the flange is formed in a donut-shaped disk coaxial with a body extending from the water line of the body. 前記喫水線から延びるフランジに加えて水中部分にも胴部の周囲から垂直軸に直交する面上に延びるフランジが設けられている請求項１から３のいずれかに記載された波高値測定用ブイの構造。 4. The peak value measuring buoy according to claim 1, wherein in addition to the flange extending from the water line, the underwater portion is provided with a flange extending on a surface perpendicular to the vertical axis from the periphery of the trunk portion. Construction.
JP2005220071A 2005-07-29 2005-07-29 Structure of buoy for measuring wave height Pending JP2007030789A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8730741B2 (en) 2011-02-14 2014-05-20 Kabushiki Kaisha Toshiba Semiconductor memory system capable of suppressing consumption current

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5657591A (en) * 1980-09-04 1981-05-20 Zeniraito V:Kk Buoy
JPH038990U (en) * 1988-05-12 1991-01-28
JPH0375097U (en) * 1989-11-27 1991-07-29
JPH08278130A (en) * 1995-04-06 1996-10-22 Zeniraito V:Kk Wave height measuring buoy
JP2002145177A (en) * 2000-08-09 2002-05-22 Tsurumi Seiki:Kk Float device for measuring ocean data

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5657591A (en) * 1980-09-04 1981-05-20 Zeniraito V:Kk Buoy
JPH038990U (en) * 1988-05-12 1991-01-28
JPH0375097U (en) * 1989-11-27 1991-07-29
JPH08278130A (en) * 1995-04-06 1996-10-22 Zeniraito V:Kk Wave height measuring buoy
JP2002145177A (en) * 2000-08-09 2002-05-22 Tsurumi Seiki:Kk Float device for measuring ocean data

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8730741B2 (en) 2011-02-14 2014-05-20 Kabushiki Kaisha Toshiba Semiconductor memory system capable of suppressing consumption current

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