RU93004976A - SYSTEM OF MEASURING THE SPEED OF THE FLOW IN THE DRAINAGE PIPE - Google Patents

SYSTEM OF MEASURING THE SPEED OF THE FLOW IN THE DRAINAGE PIPE

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Publication number
RU93004976A
RU93004976A RU93004976/10A RU93004976A RU93004976A RU 93004976 A RU93004976 A RU 93004976A RU 93004976/10 A RU93004976/10 A RU 93004976/10A RU 93004976 A RU93004976 A RU 93004976A RU 93004976 A RU93004976 A RU 93004976A
Authority
RU
Russia
Prior art keywords
flow
sample
measuring
speed
drainage pipe
Prior art date
Application number
RU93004976/10A
Other languages
Russian (ru)
Inventor
М.Петрофф Алан
В.Фуллертон Лэрри
Original Assignee
Эй-Ди-Эс Энвайронментал Сервисиз, Инк.
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 Эй-Ди-Эс Энвайронментал Сервисиз, Инк. filed Critical Эй-Ди-Эс Энвайронментал Сервисиз, Инк.
Publication of RU93004976A publication Critical patent/RU93004976A/en

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Claims (1)

Звуковая система измерения потока жидкости, в которой измеряются отраженные волны или отражения пачки импульсов ультразвуковой энергии из ультразвукового излучателя, содержащие ряд частот, представляющие ряд дискретных скоростей потока в объеме жидкости, снабжена логическим элементом для приема отражений из выбранного объема жидкости на выбранном расстоянии от преобразователя. В связи с этим выборка сигнала временной области преобразуется в выборку частотной области, посредством чего определяется наличие и величина каждой частотной составляющей или составляющей скорости, причем это обычно выполняется с помощью устройства, известного как устройство быстрого преобразования Фурье, получая форму сигнала, представляющего среднюю скорость потока.A sound measurement system for fluid flow, in which reflected waves or reflections of an ultrasonic energy pulse packet from an ultrasonic emitter, containing a number of frequencies representing a series of discrete flow velocities in the fluid volume, are provided with a logic element for receiving reflections from a selected fluid volume at a selected distance from the transducer. In this regard, the sample of the time domain signal is converted into a sample of the frequency domain, whereby the presence and magnitude of each frequency component or velocity component is determined, and this is usually done using a device known as a fast Fourier transform device, obtaining a waveform representing the average flow rate .
RU93004976/10A 1991-07-26 1992-07-20 SYSTEM OF MEASURING THE SPEED OF THE FLOW IN THE DRAINAGE PIPE RU93004976A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/736466 1991-07-26

Publications (1)

Publication Number Publication Date
RU93004976A true RU93004976A (en) 1995-05-27

Family

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