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RU96103368A - METHOD OF NON-CONTACT DYNAMIC MEASUREMENT OF A DIELECTRIC CONSTANT USING A CAPACITIVE SENSOR - Google Patents

METHOD OF NON-CONTACT DYNAMIC MEASUREMENT OF A DIELECTRIC CONSTANT USING A CAPACITIVE SENSOR

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Publication number
RU96103368A
RU96103368A RU96103368/28A RU96103368A RU96103368A RU 96103368 A RU96103368 A RU 96103368A RU 96103368/28 A RU96103368/28 A RU 96103368/28A RU 96103368 A RU96103368 A RU 96103368A RU 96103368 A RU96103368 A RU 96103368A
Authority
RU
Russia
Prior art keywords
capacitive sensor
dielectric constant
conductive element
dielectric
measured
Prior art date
Application number
RU96103368/28A
Other languages
Russian (ru)
Other versions
RU2115935C1 (en
Inventor
Мариус Клутье
Сильвен Савар
Жан-Марк Буржуа
Франсуа Лалонд
Original Assignee
Гидро-Квебек
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
Priority claimed from CA002041231A external-priority patent/CA2041231C/en
Application filed by Гидро-Квебек filed Critical Гидро-Квебек
Publication of RU96103368A publication Critical patent/RU96103368A/en
Application granted granted Critical
Publication of RU2115935C1 publication Critical patent/RU2115935C1/en

Links

Claims (6)

1. Способ бесконтактного динамического измерения диэлектрической постоянной диэлектрического вещества, заключающийся в том, что вещество располагают между заземленным проводящим элементом (55) и емкостным датчиком (3), образованным двумя параллельными перекрывающимися пластинами, электрически изолированными одна от другой, на которые подают высокочастотный сигнал заданного напряжения, и измеряют величину тока, индуцируемого высокочастотным сигналом в емкостном датчике, отличающийся тем, что емкостный датчик (3) размещают вблизи и на фиксированном расстоянии по перпендикуляру от проводящего элемента (55) и емкостным датчиком (3), а величину диэлектрической постоянной диэлектрического вещества (47) определяют по величине измеренного тока, прямо пропорциональной указанной диэлектрической постоянной.1. The method of non-contact dynamic measurement of the dielectric constant of a dielectric substance, which consists in the fact that the substance is placed between a grounded conductive element (55) and a capacitive sensor (3) formed by two parallel overlapping plates, electrically isolated from one another, to which a high-frequency signal of a given voltage, and measure the magnitude of the current induced by a high-frequency signal in a capacitive sensor, characterized in that the capacitive sensor (3) is placed near and on the perpendicular distance from the conductive element (55) and the capacitive sensor (3), and the dielectric constant of the dielectric substance (47) is determined by the measured current, which is directly proportional to the specified dielectric constant. 2. Способ по п.1, отличающийся тем, что измерение тока осуществляют раздельным измерением высокочастотного сигнала терминальными устройствами с низким полным сопротивлением (69), включенными последовательно между средством возбуждения (65) для формирования высокочастотного сигнала и ближайшей к проводящему элементу (55) пластиной (7) датчика (3), и вычитанием из измеряемого сигнала другого сигнала, пропорционального измеренному току. 2. The method according to claim 1, characterized in that the current measurement is carried out by separately measuring the high-frequency signal by terminal devices with low impedance (69), connected in series between the excitation means (65) to form the high-frequency signal and the plate closest to the conductive element (55) (7) sensor (3), and subtracting from the measured signal another signal proportional to the measured current. 3. Способ по п. 1, отличающийся тем, что определение диэлектрической постоянной диэлектрического вещества (47), расположенного между проводящим элементом (55) и емкостным датчиком (3), в зависимости от величины измеряемого тока осуществляют с учетом реальных различных физических параметров емкостного датчика (3) и/или с учетом паразитных эффектов, свойственных емкостному датчику (3), которые могут исказить определяемую величину. 3. The method according to p. 1, characterized in that the determination of the dielectric constant of the dielectric substance (47) located between the conductive element (55) and the capacitive sensor (3), depending on the magnitude of the measured current is carried out taking into account the real different physical parameters of the capacitive sensor (3) and / or taking into account the parasitic effects inherent in the capacitive sensor (3), which can distort the detected value. 4. Способ по п.1, отличающийся тем, что емкостный датчик (3) выполнен в виде N датчиков, установленных последовательно с небольшим интервалом так, что диэлектрическая постоянная диэлектрического вещества (47) может быть определена в нескольких местах. 4. The method according to claim 1, characterized in that the capacitive sensor (3) is made in the form of N sensors installed in series with a small interval so that the dielectric constant of the dielectric substance (47) can be determined in several places. 5. Способ по п.1, отличающийся тем, что в качестве измеряемой величины диэлектрической постоянной используют изменение в резервуаре (49) уровня (45) диэлектрического вещества (47), расположенного между проводящим элементом (55) и емкостным датчиком (3). 5. The method according to claim 1, characterized in that as the measured value of the dielectric constant, a change in the reservoir (49) of the level (45) of the dielectric substance (47) located between the conductive element (55) and the capacitive sensor (3) is used. 6. Способ по п.1, отличающийся тем, что в качестве измеряемой величины используют диэлектрическое вещество (57) с переменными или постоянными параметрами, перемещающееся внутри трубопровода (59). 6. The method according to claim 1, characterized in that the dielectric substance (57) with variable or constant parameters moving inside the pipeline (59) is used as the measured quantity.
RU96103368A 1991-04-25 1992-04-16 Method of contact-free measurement of dielectric constant of dielectric matter RU2115935C1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CA002041231A CA2041231C (en) 1991-04-25 1991-04-25 Dynamic monitoring without mobile or permittivity contact, using a capacitive sensor
CA2041231 1991-04-25
CA2,041,231 1991-04-25

Publications (2)

Publication Number Publication Date
RU96103368A true RU96103368A (en) 1998-04-20
RU2115935C1 RU2115935C1 (en) 1998-07-20

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RU93057194A RU2104478C1 (en) 1991-04-25 1992-04-16 Method of contactless dynamic measurement of displacement of grounded conductive body
RU96103368A RU2115935C1 (en) 1991-04-25 1992-04-16 Method of contact-free measurement of dielectric constant of dielectric matter

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RU93057194A RU2104478C1 (en) 1991-04-25 1992-04-16 Method of contactless dynamic measurement of displacement of grounded conductive body

Country Status (13)

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US (2) US6075464A (en)
EP (1) EP0608230B1 (en)
JP (1) JPH06508682A (en)
KR (1) KR0166981B1 (en)
CN (1) CN1030795C (en)
AT (1) ATE125620T1 (en)
AU (1) AU1567292A (en)
BR (1) BR9205947A (en)
CA (1) CA2041231C (en)
DE (1) DE69203727T2 (en)
MX (1) MX9201923A (en)
RU (2) RU2104478C1 (en)
WO (1) WO1992019939A1 (en)

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