CN201749142U - Double-coil current sensor - Google Patents
Double-coil current sensor Download PDFInfo
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- CN201749142U CN201749142U CN2010202337178U CN201020233717U CN201749142U CN 201749142 U CN201749142 U CN 201749142U CN 2010202337178 U CN2010202337178 U CN 2010202337178U CN 201020233717 U CN201020233717 U CN 201020233717U CN 201749142 U CN201749142 U CN 201749142U
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Abstract
The utility model relates to a double-coil current sensor, which comprises two identical coils and a measuring lead, wherein the two identical coils are arranged on the same plane, and the measuring lead is arranged on the symmetric line of the two coils. Since the coils are hollow, the mechanism has small volume, a measured current lead is placed between the two coils, so as to realize electric isolation, the magnetic lines of force that the two coils penetrate are opposite, output ends are in phase, and the output voltage equals to the sum of the induction voltage of the two coils. A reference grounding end is arranged at the connecting end of the two coils, when the two coils encounter the external interference, the magnetic lines of force that the two coils penetrate are in phase, the voltage of the output end adopts common mode voltage, and the output voltage is the difference between the induction voltages of the two coil, so as to minimize the interference.
Description
Technical field
The utility model relates to the dual coil current sensor of the measurement electric current of a kind of device of current measurement, particularly a kind of isolation.
Background technology
At present, current measurement device mainly contains: one, resistor-type shunt, and cost is low, can measure various waveforms, but the problem that existence is not isolated, thermal value is big.Two, the current transformer of ribbon core or magnetic core can carry out electrical isolation, but volume is big, cost is high, and non-sinusoidal wave is measured incorrect.Three, Hall element can carry out electrical isolation, also can measure various waveforms, but the precision of measuring is not high, temperature variation is big.
The utility model content
The purpose of this utility model is to provide a kind of volume little for the deficiency that solves above-mentioned technology, and cost is low, isolation, can survey the current measurement device of various waveforms.
In order to achieve the above object, the dual coil current sensor that the utility model is designed, it mainly comprises coil and measures lead, is provided with two identical coils, and two identical coils are arranged in the same plane, and described measurement lead is arranged on the line of symmetry of two coils.Described two coils adopt homophase output, and promptly anode is exported respectively, the mode that negative terminal links to each other; Perhaps negative terminal is exported respectively, the mode that anode links to each other.The link place of two coils is provided with and connects with reference to the ground end.Described coil is an air core coil, or is provided with iron core or magnetic core in the coil.
The resulting dual coil current sensor of the utility model, because coil is an air core coil, this mechanism's volume is little, the current lead of measuring is placed in the middle of two coils, can realize electrical isolation, and two magnetic lines of force that coil passed are opposite, and output terminal is homophase output, and making output voltage is two coil-induced voltage sums.But also the link place of two coils is provided with end with connecing reference, and when there was interference in the external world, the magnetic line of force that passes two coils was a homophase, and the voltage of output terminal is common mode voltage, and output voltage is the poor of two coil-induced voltages, makes to disturb to be reduced to a minimum.
Description of drawings
Fig. 1 is the utility model structure front elevation;
Fig. 2 is the utility model structure left view;
Fig. 3 is the output connection figure of the utility model embodiment 1 dual coil current sensor;
Fig. 4 is the output connection figure of the utility model embodiment 2 dual coil current sensor.
1 coil, 2 measure lead.
Embodiment
The utility model will be further described in conjunction with the accompanying drawings below by embodiment.
Embodiment 1:
As Fig. 1, Fig. 2, Fig. 3, the dual coil current sensor that present embodiment is described, it mainly comprises coil 1 and measures lead 2, be provided with two identical coils 1, and two identical coils 1 are arranged in the same plane, and described measurement lead 2 is arranged on the line of symmetry of two coils 1.The anode of coil 1 connects the anode of output, and the anode of another coil 1 connects the negative terminal of output, and the negative terminal of two coils 1 is connected, and is connected with connecing with reference to the ground end again.
Embodiment 2:
As shown in Figure 4, the dual coil current sensor that present embodiment is described, the negative terminal of a described coil 1 connects the anode of output, and the negative terminal of another coil 1 connects the negative terminal of output, and the anode of two coils 1 is connected, and is connected with the ground connection reference edge again.
When flowing through measurement lead 2, electric current produces magnetic field, the magnetic line of force passes two coils 1, induce voltage, and owing to measure the centre that lead 2 is placed on two coils 1, the magnetic line of force that two coils 1 are passed is opposite, the voltage of output terminal is differential mode voltage, and output voltage is the induced voltage sum of two coils 1.When there is interference in the external world, pass the magnetic force of two coils 1 and think it is homophase, the voltage of output terminal is common mode voltage, output voltage is induced voltage poor of two coils 1, so just makes to disturb to be reduced to a minimum.
Claims (4)
1. dual coil current sensor, it mainly comprises coil and measures lead, it is characterized in that being provided with two identical coils, and two identical coils are arranged in the same plane, described measurement lead is arranged on the line of symmetry of two coils.
2. dual coil current sensor according to claim 1 is characterized in that described two coils adopt homophase output, and promptly anode is exported respectively, the mode that negative terminal links to each other; Perhaps negative terminal is exported respectively, the mode that anode links to each other.
3. dual coil current sensor according to claim 2 is characterized in that the link place of described two coils is provided with end with connecing reference.
4. according to claim 1 or 2 or 3 described dual coil current sensor, it is characterized in that described coil is an air core coil, or be provided with iron core or magnetic core in the described coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202337178U CN201749142U (en) | 2010-06-23 | 2010-06-23 | Double-coil current sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202337178U CN201749142U (en) | 2010-06-23 | 2010-06-23 | Double-coil current sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201749142U true CN201749142U (en) | 2011-02-16 |
Family
ID=43583818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202337178U Expired - Lifetime CN201749142U (en) | 2010-06-23 | 2010-06-23 | Double-coil current sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201749142U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105518471A (en) * | 2013-06-12 | 2016-04-20 | 菲尼克斯电气公司 | Current sensor arrangement |
| CN107478935A (en) * | 2017-08-25 | 2017-12-15 | 苏州博众精工科技有限公司 | A kind of wireless seat fills IPT method of testings and device |
| CN107589290A (en) * | 2017-08-29 | 2018-01-16 | 中国科学院合肥物质科学研究院 | A kind of recombination line ring type structure for direct current long pulse current measurement |
| CN111157775A (en) * | 2019-11-20 | 2020-05-15 | 江苏轶一电力科技有限公司 | Double-coil current sensor |
-
2010
- 2010-06-23 CN CN2010202337178U patent/CN201749142U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105518471A (en) * | 2013-06-12 | 2016-04-20 | 菲尼克斯电气公司 | Current sensor arrangement |
| CN107478935A (en) * | 2017-08-25 | 2017-12-15 | 苏州博众精工科技有限公司 | A kind of wireless seat fills IPT method of testings and device |
| CN107589290A (en) * | 2017-08-29 | 2018-01-16 | 中国科学院合肥物质科学研究院 | A kind of recombination line ring type structure for direct current long pulse current measurement |
| CN111157775A (en) * | 2019-11-20 | 2020-05-15 | 江苏轶一电力科技有限公司 | Double-coil current sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG YONGTAILONG ELECTRONIC CO., LTD. Free format text: FORMER NAME: ZHEJIANG YONGTAILONG ELECTRONICS CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 314500, No. 8, Kangding Road, Tongxiang Economic Development Zone, Indus street, Tongxiang, Zhejiang, Jiaxing Patentee after: Zhejiang Yongtailong Electronic Co., Ltd. Address before: 314500 No. 8, Kangding Road, Tongxiang Economic Development Zone, Jiaxing, Zhejiang Patentee before: Zhejiang Yongtailong Electronics Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110216 |
|
| CX01 | Expiry of patent term |