SU879484A1 - Device for measuring current - Google Patents
Device for measuring current Download PDFInfo
- Publication number
- SU879484A1 SU879484A1 SU802881645A SU2881645A SU879484A1 SU 879484 A1 SU879484 A1 SU 879484A1 SU 802881645 A SU802881645 A SU 802881645A SU 2881645 A SU2881645 A SU 2881645A SU 879484 A1 SU879484 A1 SU 879484A1
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- SU
- USSR - Soviet Union
- Prior art keywords
- current
- measuring current
- measuring
- measured
- measurement
- Prior art date
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Description
(54) УСТРОЙСТВО ДЛЯ ИЗМЕРЕНИЯ ТОКА(54) DEVICE FOR MEASURING CURRENT
II
Изобретение о-йноситс к измерительной технике и может быть использовано в метрологии в качестве образцового метрологического средства дл аттестации измерителей тока.The invention relates to measurement technology and can be used in metrology as an exemplary metrological tool for certifying current meters.
Известно устройство дл измерени напр жени и тока, содержащее пьезокристалл с электродами, к которым подключено измер емое напр жение, щ еобразователь деформации в измер емую величину и указатель l.A device for measuring voltage and current is known, comprising a piezocrystal with electrodes to which the measured voltage is connected, a strainer forming a measured value, and a pointer l.
Недостатком указанного устройства вл етс невысока точность измерени , обусловленна малой чувствительностью за счет внешнего воздействи напр жений на пьезоэлемент и значительной температурной погрешностью.The disadvantage of this device is the low measurement accuracy, due to low sensitivity due to external stress on the piezoelectric element and significant temperature error.
Известно также устройство дл измерени тока, содержащее пьезопреобразователь .измер емого параметра в частоту электрического сигнала, регистратор частоты и электронный возбудитель , причем пьезопреобразователь выполнен в виде рамки, на боковыхIt is also known a device for measuring the current, comprising a piezotransducer of the parameter being measured to the frequency of an electrical signal, a frequency recorder and an electronic exciter, the piezotransducer being designed as a frame, on the side
поверхност х которой нанесены электроfjfji , электрически не св занные между собой, одни из которых подключены к входу устройства, а другие - к входу электронного возбудит.ел 2.The surfaces of which are electrofjfji, electrically not connected to each other, some of which are connected to the input of the device, and others - to the input of the electronic exciter. 2.
Недостатком известного устройства вл етс сравнительно невысока точность измерени , обусловленна малым коэффициентом преобразовани , поскольку измер емый параметр воздействует A disadvantage of the known device is the relatively low measurement accuracy due to the low conversion coefficient, since the measured parameter affects
10 на наружные электроды.10 on the outer electrodes.
Целью изобретени вл етс повышение точности измерени тока.The aim of the invention is to improve the accuracy of current measurement.
Поставленна цель достигаетс тем, что в устройстве дп ; измерени тока, The goal is achieved by the fact that in the device dp; current measurement
15 содержащем преобразователь тока в частоту, выполненный ввиде плоского пьезокристалла с нанесенными на обе стороны электродами, электронный воз будитель и регистратор частоты, 15 containing a current-to-frequency converter made as a flat piezocrystal with electrodes deposited on both sides, an electronic driver and a frequency recorder,
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU802881645A SU879484A1 (en) | 1980-02-15 | 1980-02-15 | Device for measuring current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU802881645A SU879484A1 (en) | 1980-02-15 | 1980-02-15 | Device for measuring current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU879484A1 true SU879484A1 (en) | 1981-11-07 |
Family
ID=20877359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU802881645A SU879484A1 (en) | 1980-02-15 | 1980-02-15 | Device for measuring current |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU879484A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0107059A1 (en) * | 1982-10-01 | 1984-05-02 | General Electric Company | Current sensor |
| WO2012109949A1 (en) * | 2011-02-15 | 2012-08-23 | Tan Chengzhong | Piezoelectric current sensor |
-
1980
- 1980-02-15 SU SU802881645A patent/SU879484A1/en active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0107059A1 (en) * | 1982-10-01 | 1984-05-02 | General Electric Company | Current sensor |
| WO2012109949A1 (en) * | 2011-02-15 | 2012-08-23 | Tan Chengzhong | Piezoelectric current sensor |
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