SU1460619A1 - Method of measuring distribution of sound velocity in liquid medium - Google Patents

Method of measuring distribution of sound velocity in liquid medium Download PDF

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Publication number
SU1460619A1
SU1460619A1 SU874258439A SU4258439A SU1460619A1 SU 1460619 A1 SU1460619 A1 SU 1460619A1 SU 874258439 A SU874258439 A SU 874258439A SU 4258439 A SU4258439 A SU 4258439A SU 1460619 A1 SU1460619 A1 SU 1460619A1
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SU
USSR - Soviet Union
Prior art keywords
sound
reflectors
liquid medium
distribution
medium
Prior art date
Application number
SU874258439A
Other languages
Russian (ru)
Inventor
Георгий Николаевич Серавин
Антонина Петровна Пономаренко
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Войсковая часть 69104
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Priority to SU874258439A priority Critical patent/SU1460619A1/en
Application granted granted Critical
Publication of SU1460619A1 publication Critical patent/SU1460619A1/en

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Abstract

Изобретение относитс  к акустическим измерени м и быть использовано дл  измерени  вертикального распределени  скорости звука в естественных водоемах. Цель изобретени  - повышение точности измерени  за счет устранени  зависимости измер емой величины от неконтролируемых изменений рассто ний между отра- жател ми звука. В исследуемую среду при помощи акустического преобразовател  2 излучают акустические колебани , которые, распростран  сь в среде, отражаютс  от отражателей 3, 3,...,3,...,3„ и попадают на прй емники 4 звука. С помощью измерителей 6 временных интервалов определ ют времена распространени  акустических колебаний от акустического преобразовател  2 до отражателей 3i и до приемников 4 звука, по котор№1 ЗВМ 7 рассчитывает распределение скорости распространени  звука в жидкой среде. 1 ил. (ЛThe invention relates to acoustic measurements and to be used to measure the vertical distribution of the speed of sound in natural water bodies. The purpose of the invention is to improve the accuracy of measurement by eliminating the dependence of the measured value on uncontrolled changes in the distance between the sound reflectors. Using the acoustic transducer 2, the studied medium emits acoustic oscillations, which, propagating in the medium, are reflected from reflectors 3, 3, ..., 3, ..., 3 'and get on the sound 4. Using the 6 time interval meters, the propagation times of the acoustic oscillations from the acoustic transducer 2 to the reflectors 3i and to the sound receivers 4 are determined, using which No.1 ЗВМ 7 calculates the distribution of the velocity of sound propagation in the liquid medium. 1 il. (L

Description

Со cos oi;Cos cos oi;

uu

L ОL o

Г Do G do

L С  L c

о(; srcsin(0,5 t,; /(t;- t,; )), f .tjI.o (; srcsin (0,5 t ,; / (t; - t ,;)), f .tjI.

9  9

®, ®,

2 Di + D42 Di + D4

, z; D. ., z; D..

Claims (1)

Формула изобретения Способ измерения распределения скорости звука в жидкой среде, заключающийся в том, что в исследуемой среде размещают излучатель, установленные на фиксированных расстояниях D· друг от друга отражатели и совмещенный с излучателем приемник звука, излучают в исследуемую среду звуковые .колебания, принимают их после отражения от отражателей, измеряют времена t4;nx распространения до отражателей и обратно и с учетом измеренных времен и расстояний D; определяют распределение скорости звука в жидкой среде, отличающийс я тем, что, с целью повышения точности измерений, дополнительно устанавливают на расстояниях D4 и Ог соответственно от излучателя на одной прямой второй и третий приемники звука, измеряют времена Ц;SUMMARY OF THE INVENTION A method for measuring the distribution of sound velocity in a liquid medium, which consists in placing an emitter installed in the test medium, reflectors installed at fixed distances D · from each other, and a sound receiver combined with the radiator, emit sound vibrations into the test medium, receive them after reflections from reflectors, measure t 4 times; nx propagation to and from reflectors, and taking into account the measured times and distances D; determining the distribution of the speed of sound in a liquid medium, characterized in that, in order to increase the accuracy of the measurements, an additional second and third sound receivers are installed at distances D 4 and O g, respectively, from the radiator on one straight line, and the times C are measured; распространения звуковых колебаний от излучателя до отражателей и до соответственно второго и третьего где ci; - приведенные углы прихода принятых сигналов, приемников звука, а распределение скорости звука в жидкой среде опреде· ляют по формулеpropagation of sound vibrations from the emitter to the reflectors and to, respectively, the second and third where ci; - reduced angles of arrival of received signals, sound receivers, and the distribution of the speed of sound in a liquid medium is determined by the formula C; (ζ;) = Co C; (ζ;) = C o Со cos οί;C o cos οί; ___ „ а___ " a * ~аТ cos ck.;* ~ aT cos ck .; (-sinjR.',__ ϊ+sinot; Г srcsin(o,5 t/(t; - t,; )), — >(-sinjR. ', __ ϊ + sinot; Г srcsin (o, 5 t / (t; - t ,;)), - > D<_+ Di , z; « ϋά tgo/;.D <_ + Di, z; "Ϋ ά tgo / ;.
SU874258439A 1987-06-08 1987-06-08 Method of measuring distribution of sound velocity in liquid medium SU1460619A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU874258439A SU1460619A1 (en) 1987-06-08 1987-06-08 Method of measuring distribution of sound velocity in liquid medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU874258439A SU1460619A1 (en) 1987-06-08 1987-06-08 Method of measuring distribution of sound velocity in liquid medium

Publications (1)

Publication Number Publication Date
SU1460619A1 true SU1460619A1 (en) 1989-02-23

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SU874258439A SU1460619A1 (en) 1987-06-08 1987-06-08 Method of measuring distribution of sound velocity in liquid medium

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2515125C1 (en) * 2012-11-30 2014-05-10 Открытое акционерное общество "Концерн "Океанприбор" Method of determining sound speed

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Авторское свидетельство СССР 958868, кл. G 01 Н 5/00, 1981. *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2515125C1 (en) * 2012-11-30 2014-05-10 Открытое акционерное общество "Концерн "Океанприбор" Method of determining sound speed

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