JPS5912304A - Method for measuring thickness of floating material on surface of water - Google Patents

Method for measuring thickness of floating material on surface of water

Info

Publication number
JPS5912304A
JPS5912304A JP12187282A JP12187282A JPS5912304A JP S5912304 A JPS5912304 A JP S5912304A JP 12187282 A JP12187282 A JP 12187282A JP 12187282 A JP12187282 A JP 12187282A JP S5912304 A JPS5912304 A JP S5912304A
Authority
JP
Japan
Prior art keywords
water
floating
water surface
thickness
distance
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
Application number
JP12187282A
Other languages
Japanese (ja)
Inventor
Shiro Domae
同前　史朗
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Engineering and Shipbuilding Co Ltd
Mitsui Zosen KK
Original Assignee
Mitsui Engineering and Shipbuilding Co Ltd
Mitsui Zosen KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsui Engineering and Shipbuilding Co Ltd, Mitsui Zosen KK filed Critical Mitsui Engineering and Shipbuilding Co Ltd
Priority to JP12187282A priority Critical patent/JPS5912304A/en
Publication of JPS5912304A publication Critical patent/JPS5912304A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
    • G01B17/02—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

PURPOSE:To measure the thickness of a floating material on the surface of water accurately and continuously, by providing a hydraulic pressure gage and a device which transmits an ultrasonic wave to the surface of a water, receives the reflected ultrasonic wave, and detects the distance to the bottom surface of the floating material on the surface of the water. CONSTITUTION:A hydraulic gage 3 and an ultrasonic wave type distance measuring device 5 are provided at the sea bottom 2. The device 5 transmits an ultrasonic wave to the water surface 4, receives the ultrasonic wave, which is reflected by a bottom surface 1a of a floating ice 1, and detects a distance l1 to the bottom surface 1a of the floating ice. When the hydraulic value displayed by the hydraulic gage 3 is divided by the concentration of sea water, a depth l2 where the device 5 is provided is obtained. When the difference between the l2 and the l1 is obtained, the thickness d0 of the underwater part of the floating ice 1 is obtained. When the d0 is further divided by the specific gravity rho of the ice, a thickness d1 of the floating ice 1 is obtained. When the hydraulic pressure gage and the device are continuously operated, the thickness of the floating ice 1 can be continuously measured.

Description

【発明の詳細な説明】 本発明は水面浮遊物の厚さ測定方法に係り、特に流氷の
厚さを測定するに好適な水面浮遊物の厚さ測定方法に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for measuring the thickness of objects floating on the water surface, and particularly to a method for measuring the thickness of objects floating on the water surface suitable for measuring the thickness of drift ice.

従来流氷などの水面浮遊物の厚さは、測定渚が流氷など
に垂直に孔を穿け、測定器具をこの孔に差し込んで器具
の目盛を読み取るようにして求められているが、著しく
作業能率が低い。また、測定された値もスポット的なも
のであり、流氷の如き長大物の厚さを精度良く連続的に
測定することは著しく困峻であった。Conventionally, the thickness of objects floating on the water surface, such as drift ice, has been determined by drilling a hole vertically in the drift ice, inserting a measuring instrument into the hole, and reading the scale of the instrument, but this method significantly reduces work efficiency. low. Furthermore, the measured values are spot-like, and it is extremely difficult to accurately and continuously measure the thickness of long objects such as drift ice.

本発明は上記従来の問題点を解消すべくなされたもので
あって、水面浮遊物の厚さを精度良く、しかも連続的に
測定することも可能な水面浮遊物の厚さ測定方法を提供
することを特徴とする特許である。The present invention has been made to solve the above-mentioned conventional problems, and provides a method for measuring the thickness of objects floating on the water surface, which can accurately and continuously measure the thickness of objects floating on the water surface. This patent is characterized by:

本発明の方法は水圧計と、水面に向けて超音波を発する
と共に反射された超音波を受信して水面浮遊物の底面ま
での距離を検出する装置と、を水面下に設置し、該水圧
計で検知される水圧値を水の密度で徐して得られる深度
と、前記水面浮遊物の底面までの距離と、を比較して水
面浮遊物の水線下の厚さを求めるようにしたものである
。また本発明の方法は、さらに、求められた水面浮遊物
の水線下の厚さを該水面浮遊物の比重で徐して水面浮遊
物の厚さを求めるようにしたものである。The method of the present invention installs a water pressure gauge and a device that emits ultrasonic waves toward the water surface and receives the reflected ultrasonic waves to detect the distance to the bottom of objects floating on the water surface, and The depth obtained by dividing the water pressure value detected by the meter by the density of water is compared with the distance to the bottom of the object floating on the water surface to determine the thickness below the water line of the object floating on the water surface. It is something. Furthermore, in the method of the present invention, the thickness of the water surface floating object is determined by dividing the determined thickness below the water line of the water surface floating object by the specific gravity of the water surface floating object.

以下図面に示す実施例を参照しながら本発明をさらに詳
細に説明する。The present invention will be described in further detail below with reference to embodiments shown in the drawings.

第１図は本発明方法を示す概略図であって、流氷１の厚
さを測定するものに係る。海底２には、水圧計３と、水
面４に向けて超音波を発すると共に流氷１の底面１αで
反射された超音波を受信して流氷底面１αまでの距離１
．を検出する超音波式の距離測定装置５と、が設置され
ている。FIG. 1 is a schematic diagram showing the method of the present invention, which involves measuring the thickness of drift ice 1. On the seabed 2, there is a water pressure gauge 3 and a distance 1 that emits ultrasonic waves toward the water surface 4 and receives the ultrasonic waves reflected from the bottom surface 1α of the drift ice 1.
．． An ultrasonic distance measuring device 5 for detecting the distance is installed.

しかして水圧計３の示す水圧値を海水の密度で徐せば、
水圧計３と超音波式距離測定装置５とが設置されている
深度ｔ、が求まる。このｔ２と上記ｔ、との差を求めれ
ば流氷１の水面下の厚さｄｏが求められる。さらに、氷
の比重ρでｄ。を徐すことにより流氷１の厚さｄｌ　を
求めることができる。Therefore, if the water pressure value indicated by water pressure gauge 3 is divided by the density of seawater,
The depth t at which the water pressure gauge 3 and the ultrasonic distance measuring device 5 are installed is determined. By finding the difference between this t2 and the above t, the thickness do of the drift ice 1 below the water surface can be found. Furthermore, the specific gravity of ice ρ is d. The thickness dl of the drift ice 1 can be found by subtracting .

また水圧計３と装置５とを連続して作動させておけば流
氷１の厚さを連続的に測定することができる。さらに超
音波式の距離測定装置５を採用しているので、測定精度
も極めて高い。なお流氷がない場合には１２＝１．　　
となり、流氷なしを検知することができる。Furthermore, if the water pressure gauge 3 and the device 5 are operated continuously, the thickness of the drift ice 1 can be continuously measured. Furthermore, since the ultrasonic distance measuring device 5 is employed, the measurement accuracy is extremely high. In addition, if there is no drift ice, 12=1.
Therefore, it is possible to detect the absence of drift ice.

第２図は本発明の測定方法を実施する装置の構成図であ
って、超音波式距離測定装置５の出力値は増幅器６で増
幅されたのち演算器７に入力される。一方、水圧計３の
出力値は増幅器６′で増幅された後演算器７に入力され
る。この演算器７において、上記の一連の計算がなされ
流氷１の水線下厚さｄｏ及び全体厚さｄ、が算出され、
この値は演算器７の出力装置から記録計８に出方され、
連続的に記録される。なおこの装置の構成は、本発明方
法を実施する一例であり、本発明はこれに限定されるも
のではない。FIG. 2 is a block diagram of a device for carrying out the measuring method of the present invention, in which the output value of the ultrasonic distance measuring device 5 is amplified by an amplifier 6 and then input to a computing unit 7. On the other hand, the output value of the water pressure gauge 3 is input to the arithmetic unit 7 after being amplified by the amplifier 6'. In this calculator 7, the above-mentioned series of calculations are performed, and the thickness below the water line do and the overall thickness d of the drift ice 1 are calculated.
This value is output from the output device of the calculator 7 to the recorder 8,
Recorded continuously. Note that the configuration of this device is an example of implementing the method of the present invention, and the present invention is not limited to this.

上記実施例は流氷１の厚さを測定する例であるが、本発
明方法は水面に浮遊する船、材木など任意の物体につい
て適用可能である。流氷については、あらかじめその比
重ρがわかっているから、水線下厚さｄｏをρで徐して
全体の厚さｄｌ　が正確に求められるが、比重が未知の
ものについては、水線下厚さｄｏのみが求められる。こ
の場合にあっても水面に浮遊する物体であるところから
大略の比重は推定でき、従ってその全体の厚さを推定す
ることができる。Although the above embodiment is an example of measuring the thickness of drift ice 1, the method of the present invention can be applied to any object floating on the water surface, such as a ship or lumber. For drift ice, since its specific gravity ρ is known in advance, the total thickness dl can be found accurately by dividing the thickness below the waterline do by ρ. However, for ice whose specific gravity is unknown, the thickness below the waterline is Only sado is required. Even in this case, since the object is floating on the water surface, the approximate specific gravity can be estimated, and therefore the overall thickness can be estimated.

また上記実施例では水圧計３と装置５とは海底２に設置
されているが、その設置深度が一定とされる限り、他の
任意の位置に設置することができ、例えば海中の所定深
さの位置に架台その他の係留手段を設けて、これに設置
するようにしても良い。Further, in the above embodiment, the water pressure gauge 3 and the device 5 are installed on the seabed 2, but as long as the installation depth is kept constant, they can be installed at any other arbitrary position, for example, at a predetermined depth in the sea. It is also possible to provide a frame or other mooring means at the position and install it there.

また上記実施例では水圧計３と装置５とが等深度に設置
されているが、水圧計３と装置５とを別個の深度の位置
に設けるようにしても良い。この場合は、水圧計３と装
置５との設置深度差ｔ０を求めておき、上記の測定値＜
ｔｘ　　／−１）をこのｔ０値で補正するようにする。Further, in the above embodiment, the water pressure gauge 3 and the device 5 are installed at the same depth, but the water pressure gauge 3 and the device 5 may be installed at different depths. In this case, find the installation depth difference t0 between the water pressure gauge 3 and the device 5, and calculate the above measured value <
tx/-1) is corrected using this t0 value.

なお上記実施例は、海が示されているが、本発明方法は
、当然ながら河川、湖沼について参適用可能である。In addition, although the sea is shown in the above-mentioned Example, the method of the present invention can of course be applied to rivers, lakes and marshes.

以上の通り本発明によれば水面浮遊物の厚さを精度よく
、シかも連続的に測定することが可能とされる。しかし
て特に流氷厚さの測定に好適である。As described above, according to the present invention, it is possible to accurately and continuously measure the thickness of objects floating on the water surface. Therefore, it is particularly suitable for measuring the thickness of ice floes.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の実施例を示す模式図、第２図は本発明
方法を実施する装置の構成図である。 １・・・流氷、２・・・海底、３・・・水圧計、４・・
・水面、５・・・超音波式距離測定装置。 代理人　鵜　沼　　辰　之 （ほか２名）FIG. 1 is a schematic diagram showing an embodiment of the present invention, and FIG. 2 is a configuration diagram of an apparatus for implementing the method of the present invention. 1... Drift ice, 2... Seabed, 3... Water pressure gauge, 4...
・Water surface, 5...Ultrasonic distance measuring device. Agent Tatsuyuki Unuma (and 2 others)

Claims (3)

【特許請求の範囲】[Claims] （１）　　水圧針と、水面に向けて超音波を発すると共
に反射された超音波を受信して水面Ｉ遊物の底面までの
距離を検出する装置と、を水面″Ｆ　Ｋ設置し、該水圧
計で検知される水圧値を水の密度で徐して得られる深度
と、前記水面浮遊物の底面までの距離と、を比較して水
面浮遊物の水線下の厚さを求めるようにしたことを特徴
とする水面浮遊物の厚さ測定方法。(1) A water pressure needle and a device that emits ultrasonic waves towards the water surface and receives the reflected ultrasonic waves to detect the distance to the bottom of the water surface I play object are installed on the water surface "FK", and the water pressure The depth obtained by dividing the water pressure value detected by the meter by the density of water is compared with the distance to the bottom of the object floating on the water surface to determine the thickness below the water line of the object floating on the water surface. A method for measuring the thickness of objects floating on the water surface. （２）　　前記水圧計と、水面浮遊物の底面までの距離
を測定する装置と、をそれぞれ水底に設置することを特
徴とする特許請求の範囲第１項記載の水面浮遊物の厚さ
測定方法。(2) The method for measuring the thickness of a floating object on the water surface as set forth in claim 1, characterized in that the water pressure gauge and a device for measuring the distance to the bottom of the object floating on the water surface are respectively installed at the bottom of the water. . （３）　　水圧計と、水面に向けて超音波を発すると共
に反射された超音波を受信して水面浮遊物の底面までの
距離を検出する装置と、を水面下に設置し、核水圧計で
検知される水圧値を水の密度で徐して得られる深度と、
前記水面浮遊物の底面までの距離と、を比較し、て水面
浮遊物の水線下の厚さを求め、次いでこの水線下の厚さ
を該水面浮遊物の比重で徐すことによって水面浮遊物の
厚さを求めることを特徴とする水面浮遊物の厚さ測定方
法。(3) A water pressure gauge and a device that emits ultrasonic waves toward the water surface and receives reflected ultrasonic waves to detect the distance to the bottom of objects floating on the water surface are installed below the water surface, and a nuclear water pressure gauge is used to detect the distance to the bottom of objects floating on the water surface. The depth obtained by dividing the detected water pressure value by the water density,
The distance to the bottom of the object floating on the water surface is compared to find the thickness below the water line of the object floating on the water surface, and then the thickness below the water line is divided by the specific gravity of the object floating on the water surface. A method for measuring the thickness of floating objects on water surface, characterized by determining the thickness of floating objects.
JP12187282A 1982-07-13 1982-07-13 Method for measuring thickness of floating material on surface of water Pending JPS5912304A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12187282A JPS5912304A (en) 1982-07-13 1982-07-13 Method for measuring thickness of floating material on surface of water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12187282A JPS5912304A (en) 1982-07-13 1982-07-13 Method for measuring thickness of floating material on surface of water

Publications (1)

Publication Number Publication Date
JPS5912304A true JPS5912304A (en) 1984-01-23

Family

ID=14822010

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12187282A Pending JPS5912304A (en) 1982-07-13 1982-07-13 Method for measuring thickness of floating material on surface of water

Country Status (1)

Country Link
JP (1) JPS5912304A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62184410U (en) * 1986-05-14 1987-11-24
JPH0549217U (en) * 1991-11-29 1993-06-29 太陽誘電株式会社 Goods supply equipment
CN102435255A (en) * 2011-11-22 2012-05-02 三一电气有限责任公司 Real-time detection device of water level of ocean water and method thereof
CN105241401A (en) * 2015-09-26 2016-01-13 哈尔滨工程大学 Acoustic measuring method of thickness of ice layer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62184410U (en) * 1986-05-14 1987-11-24
JPH0549217U (en) * 1991-11-29 1993-06-29 太陽誘電株式会社 Goods supply equipment
CN102435255A (en) * 2011-11-22 2012-05-02 三一电气有限责任公司 Real-time detection device of water level of ocean water and method thereof
CN105241401A (en) * 2015-09-26 2016-01-13 哈尔滨工程大学 Acoustic measuring method of thickness of ice layer
CN105241401B (en) * 2015-09-26 2017-08-04 哈尔滨工程大学 A kind of acoustic measurement method of ice layer thickness

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