JP2627969B2 - Underwater suspension shape measuring device - Google Patents
Underwater suspension shape measuring deviceInfo
- Publication number
- JP2627969B2 JP2627969B2 JP2160844A JP16084490A JP2627969B2 JP 2627969 B2 JP2627969 B2 JP 2627969B2 JP 2160844 A JP2160844 A JP 2160844A JP 16084490 A JP16084490 A JP 16084490A JP 2627969 B2 JP2627969 B2 JP 2627969B2
- Authority
- JP
- Japan
- Prior art keywords
- light emitting
- light
- laser beam
- photographing means
- emitting means
- 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.)
- Expired - Lifetime
Links
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Mechanical Optical Scanning Systems (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は水中、特に海中での懸濁物の形状を正確に測
定するための装置である。The present invention relates to an apparatus for accurately measuring the shape of a suspension in water, particularly in the sea.
（従来の技術） 海中懸濁物は海中建造物への付着が開始される最初の
汚染物として、また海中の光学的な調査、観察を阻害す
る要因として重要である。この懸濁物の形状を把握する
ことは、その成分推定、生成、消滅などの由来を追跡す
るため又は懸濁物をとりまく環境条件を総合的に評価す
るためなどに必要である。BACKGROUND OF THE INVENTION Underwater suspensions are important as the first contaminant to begin to attach to underwater structures and as a factor inhibiting optical investigations and observations in the sea. Understanding the shape of the suspension is necessary for estimating the components, estimating the origin of the formation, disappearance, etc., or for comprehensively evaluating the environmental conditions surrounding the suspension.
懸濁物の形状を測定するには、海中から海水とともに
取り出せばよいが、この方法では懸濁物が壊れ易いため
十分に観測をすることができない。In order to measure the shape of the suspension, it is sufficient to take it out together with seawater from the sea. However, this method does not allow sufficient observation because the suspension is easily broken.
従って、懸濁物の形状を正確に把握するためには、そ
れがあるがままの姿で測定しなければならず、そのため
にはテレビカメラなどによる映像を利用すればよい。Therefore, in order to accurately grasp the shape of the suspension, it is necessary to measure the suspension as it is, and for that purpose, an image from a television camera or the like may be used.
しかしながら、従来は単に水中ストロボを照射したり
水中投光器で照射して撮影するだけであるので、従来技
術においては、光源からの光が拡散し照射方向と撮影方
向とが鋭角となり、さらに懸濁物は多数のものが浮遊し
ていてそれらが重なって撮影されるので画材が不鮮明と
なり、またカメラと懸濁物との距離によって画像が拡
大、縮小されるので正確な形状を測定することができな
いという問題がある。However, in the prior art, simply photographing by irradiating an underwater strobe or irradiating with an underwater projector, in the related art, light from a light source is diffused, so that the irradiation direction and the photographing direction become an acute angle, and the Says that many materials are floating and they are overlapped and photographed, so that the painting material becomes unclear, and the image is enlarged or reduced depending on the distance between the camera and the suspended object, so it is not possible to measure the exact shape There's a problem.
（発明が解決しようとする課題） 本発明は、水中に存在する懸濁物をあるがままの姿で
正確に、かつリアルタイムにその形状を測定することが
できる装置を提供するものである。(Problems to be Solved by the Invention) The present invention provides an apparatus capable of accurately and in real time measuring the shape of a suspended substance existing in water as it is.
（課題を解決するための手段） 本発明は、レーザービームを発光する発光手段と、該
発光手段からのレーザービームをスキャンして１〜20mm
程度の厚さの平面状に投光するため当該レーザービーム
の光線軸に正対させかつ回転可能に設けたプリズムを有
する投光手段と、該投光手段によって投光される面から
一定の距離にその投光面を正面並びに背面から撮影する
ように配置された複数の撮影手段とを具備し、これら発
光手段と投光手段と撮影手段が枠台に取り付けられると
共に、撮影手段の少なくとも１台は投光面の背面に配置
されることを特徴とするものである。(Means for Solving the Problems) The present invention provides a light emitting unit that emits a laser beam, and scans a laser beam from the light emitting unit for 1 to 20 mm.
A light projecting means having a prism which is rotatably provided so as to face the beam axis of the laser beam in order to project light in a plane having a thickness of about a predetermined distance from a surface projected by the light projecting means; A plurality of photographing means arranged to photograph the light projecting surface from the front and rear sides, and the light emitting means, the light projecting means and the photographing means are attached to a frame base, and at least one of the photographing means is provided. Is characterized by being arranged on the back of the light emitting surface.
（作用） 本発明装置は光が届かない水中の深い箇所で使用され
る。そしてこの光源からの光は、投光手段によって厚さ
が１ないし20mm程度の薄い平面状に投光される。従っ
て、この薄い投光面の中で浮遊している懸濁物だけが照
明され他は照明されない。(Operation) The device of the present invention is used in deep places in water where light does not reach. The light from the light source is projected by the light projecting means in a thin flat shape having a thickness of about 1 to 20 mm. Therefore, only the suspended matter floating in the thin light projecting surface is illuminated, and the others are not illuminated.
本発明の撮影手段は、この投光面を撮影するようにピ
ントを合せて設置されており、当然その間の距離も分っ
ている。従って、本発明装置は上記した投光面の厚さの
中で浮遊している懸濁物を正確に撮影し、リアルタイム
でその形状その他を測定することができる。The photographing means of the present invention is installed in focus so as to photograph the light projecting surface, and the distance between them is naturally known. Therefore, the apparatus of the present invention can accurately photograph a suspended substance floating in the above-mentioned thickness of the light projecting surface, and measure its shape and the like in real time.
（実施例） 第１図、第２図が本発明の実施例の概略図であり、枠
台１にレーザー光源で構成される発光手段２と、内部に
CCDカメラ（図示せず）などを有する撮影手段3,4,5と、
プリズムを有する投光手段６とを取り付けている。前記
発光手段２は青又は緑のレーザービーム７を照射するも
のであって、前記投光手段６のプリズムはこのレーザー
ビーム７の光線軸と正対しかつ当該レーザービーム７を
１〜20mm程度の厚さの扇状に拡げてスキャンするため一
定角度の範囲で回転するようにモータ８の駆動軸に取り
付けられている。(Embodiment) FIGS. 1 and 2 are schematic views of an embodiment of the present invention.
Photographing means 3, 4, 5 having a CCD camera (not shown) and the like;
Light projection means 6 having a prism is attached. The light emitting means 2 irradiates a blue or green laser beam 7, and the prism of the light projecting means 6 faces the optical axis of the laser beam 7 and converts the laser beam 7 to a thickness of about 1 to 20 mm. It is attached to the drive shaft of the motor 8 so as to rotate within a certain angle range for scanning in a fan shape.
実施例では投光面９のスキャン角度は120゜、スキャ
ン速度は1,5,10,20（Hz）などを選択できるようにして
いる。In the embodiment, the scan angle of the light projecting surface 9 is set to 120 °, and the scan speed can be selected from 1, 5, 10, 20 (Hz) and the like.
又、実施例は撮影手段を三台設置しており、何れの撮
影手段3,4,5も投光面９までの距離を一定としている
が、その距離を変えることができるように設置すること
が望ましい。又、撮影手段のうち少なくとも１台は投光
面の背面に設置する。なお、撮影手段3,4,5には何れに
も適当なフィルタを取り付けている。Further, in the embodiment, three photographing means are installed, and all the photographing means 3, 4, 5 have a constant distance to the light emitting surface 9, but they are installed so that the distance can be changed. Is desirable. Further, at least one of the photographing means is installed on the back of the light emitting surface. Appropriate filters are attached to the photographing means 3, 4, and 5, respectively.
上記のように組み立てられた本発明装置は潜水船など
に取り付けるか、あるいは水面から吊り下げる。その
際、本装置の各部材は潜水船などの中に設けたコンピュ
ータ等の操作ならびに表示、データ処理、記録装置に電
気的に連結される。The apparatus of the present invention assembled as described above is mounted on a submarine or the like, or suspended from the water surface. At this time, each member of the apparatus is electrically connected to operation and display, data processing, and recording devices of a computer or the like provided in a submarine or the like.
なお、実施例の投光手段６は往復回転するプリズムで
レーザービーム７をスキャンするため、扇状の薄い平面
状に投光面９が形成される。この投光面９の厚さはレー
ザービーム７の太さと等しい厚さに保たれている。Since the light projecting means 6 of the embodiment scans the laser beam 7 with a reciprocatingly rotating prism, the light projecting surface 9 is formed in a fan-shaped thin planar shape. The thickness of the light emitting surface 9 is kept equal to the thickness of the laser beam 7.
水中で本装置を動作させると前記投光面９内に入った
懸濁物だけが光って撮影手段3,4,5に映し出される。When the apparatus is operated in water, only the suspended matter entering the light projecting surface 9 shines and is projected on the photographing means 3, 4, 5.
前記撮影手段3,4,5と投光面９との間のものが重って
写るというようなことがなく、かつカメラと投光面９と
の間の距離が定まっているので懸濁物の鮮明な画像を得
ることができる。従って得られた画像から正確に懸濁物
の寸法、形状などを測定できる。すなわち、これらから
懸濁物の個数、面積、長径、短径、径比、画像濃度分
布、分散状況等をリアルタイムで知ることができる。
又、撮影手段のうち少なくとも１台が投光面の背面に設
置されているため、正面からの測定と背面からの測定と
を組み合わせることによってより正確な測定が行える。Since the objects between the photographing means 3, 4, 5 and the light projecting surface 9 do not overlap, and the distance between the camera and the light projecting surface 9 is fixed, suspended matter Clear image can be obtained. Therefore, the size and shape of the suspension can be accurately measured from the obtained image. That is, the number, area, major axis, minor axis, diameter ratio, image density distribution, dispersion state, and the like of the suspension can be known in real time.
In addition, since at least one of the photographing means is installed on the back of the light emitting surface, more accurate measurement can be performed by combining the measurement from the front and the measurement from the back.
さらに撮影手段3,4,5で得られた画像から照射光（た
とえば青色光）によって励起された蛍光（たとえば赤色
光）と照射光の散乱光（青色光）を区別することによっ
て、懸濁物に含まれる蛍光物質の位置、面積割合、蛍光
強度分布もリアルタイムで出力することができる。Further, by distinguishing the fluorescence (for example, red light) excited by the irradiation light (for example, blue light) and the scattered light (for example, blue light) of the irradiation light from the images obtained by the photographing means 3, 4, and 5, The position, area ratio, and fluorescence intensity distribution of the fluorescent substance contained in the image can be output in real time.
この装置は海水中の懸濁物の測定に用いられたが、こ
れに限定されるわけではなく、汚水処理場あるいは微生
物発酵槽内に懸濁する微生物塊の性状把握などにも利用
することができる。This device was used to measure suspended matter in seawater, but it is not limited to this, and it can also be used to grasp the properties of microorganisms suspended in sewage treatment plants or microbial fermenters. it can.
（発明の効果） 本発明は、レーザービームをスキャンして薄い平面状
に投光することによって懸濁物を照射し、その投光面内
で照射されたものを撮影するようにしているので、常に
ピントがあった状態で、かつ周りのものが重ならないで
撮影できるので水中の懸濁物を鮮明に撮影することがで
き、その画像から正確に懸濁物の特性及び分布などを把
握することができることになる。(Effect of the Invention) Since the present invention irradiates a suspended object by scanning a laser beam and irradiating it in a thin planar shape, and shoots the illuminated object within the light emitting surface, To be able to take pictures of suspended matter in water clearly because it can be photographed always in focus and without surrounding objects overlapping, accurately grasping the characteristics and distribution of suspended matter from the image Can be done.
第１図は本発明装置の実施例を示す概略説明図、 第２図は投光面形成を示す説明図である。 １……枠台、２……発光手段（レーザー光源） 3,4,5……撮影手段、６……投光手段（プリズム） ７……レーザービーム、８……モータ ９……投光面 FIG. 1 is a schematic explanatory view showing an embodiment of the apparatus of the present invention, and FIG. 2 is an explanatory view showing formation of a light projecting surface. DESCRIPTION OF SYMBOLS 1 ... Frame stand, 2 ... Light emitting means (laser light source) 3, 4, 5 ... Photographing means, 6 ... Light emitting means (prism) 7 ... Laser beam, 8 ... Motor 9 ... Light emitting surface
───────────────────────────────────────────────────── フロントページの続き (72)発明者 伊澤 堅志 神奈川県横浜市鶴見区鶴見中央２丁目２ 番20号 株式会社鶴見精機内 (72)発明者 渡辺 和博 神奈川県横浜市鶴見区鶴見中央２丁目２ 番20号 株式会社鶴見精機内 (56)参考文献 特開 昭61−138161（ＪＰ，Ａ) 特開 昭61−17044（ＪＰ，Ａ) 特開 昭62−188939（ＪＰ，Ａ) ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kenshi Izawa 2-20-20 Tsurumichuo, Tsurumi-ku, Yokohama-shi, Kanagawa Inside Tsurumi Seiki Co., Ltd. (72) Inventor Kazuhiro Watanabe 2 Tsurumichuo, Tsurumi-ku, Yokohama-shi, Kanagawa No. 2-20, Tsurumi Seiki Co., Ltd. (56) References JP-A-61-138161 (JP, A) JP-A-61-17044 (JP, A) JP-A-62-188939 (JP, A)
Claims (1)
と、該発光手段（２）からのレーザービームをスキャン
して１〜20mm程度の厚さの平面状に投光するため当該レ
ーザービームの光線軸に正対させかつ回転可能に設けた
プリズムを有する投光手段（６）と、該投光手段（６）
によって投光される面から一定の距離にその投光面
（９）を正面並びに背面から撮影するように配置された
複数の撮影手段（3,4,5）とを具備し、これら発光手段
（２）と投光手段（６）と撮影手段（3,4,5）が枠台
（１）に取り付けられると共に、撮影手段の少なくとも
１台は投光面（９）の背面に配置されることを特徴とす
る水中懸濁物形状測定装置。A light emitting means for emitting a laser beam;
And a prism rotatably provided so as to face the optical axis of the laser beam so as to scan the laser beam from the light emitting means (2) and project the laser beam on a plane having a thickness of about 1 to 20 mm. Light emitting means (6), and the light emitting means (6)
A plurality of photographing means (3, 4, 5) arranged so as to photograph the light projecting surface (9) from the front and back at a fixed distance from the surface projected by the light emitting means (3, 4, 5). 2) The light emitting means (6) and the photographing means (3, 4, 5) are attached to the frame base (1), and at least one of the photographing means is arranged on the back of the light emitting surface (9). An apparatus for measuring the shape of a suspended substance in water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2160844A JP2627969B2 (en) | 1990-06-18 | 1990-06-18 | Underwater suspension shape measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2160844A JP2627969B2 (en) | 1990-06-18 | 1990-06-18 | Underwater suspension shape measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0450711A JPH0450711A (en) | 1992-02-19 |
| JP2627969B2 true JP2627969B2 (en) | 1997-07-09 |
Family
ID=15723633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2160844A Expired - Lifetime JP2627969B2 (en) | 1990-06-18 | 1990-06-18 | Underwater suspension shape measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2627969B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3977375B2 (en) * | 2002-09-10 | 2007-09-19 | サッポロビール株式会社 | Method and apparatus for measuring foam particle size of malt alcoholic beverage |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS576305A (en) * | 1980-06-13 | 1982-01-13 | Toyota Central Res & Dev Lab Inc | Method and apparatus for plane part inspection of circular member |
| JPS57165704A (en) * | 1981-04-03 | 1982-10-12 | Hitachi Ltd | Detecting system for light spot position |
| JP2585080B2 (en) * | 1988-10-21 | 1997-02-26 | 情報制御システム株式会社 | Underwater suspended matter detection device |
-
1990
- 1990-06-18 JP JP2160844A patent/JP2627969B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0450711A (en) | 1992-02-19 |
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