CN204631118U - A kind of novel air magnetic conduction current sensor - Google Patents
A kind of novel air magnetic conduction current sensor Download PDFInfo
- Publication number
- CN204631118U CN204631118U CN201520310692.XU CN201520310692U CN204631118U CN 204631118 U CN204631118 U CN 204631118U CN 201520310692 U CN201520310692 U CN 201520310692U CN 204631118 U CN204631118 U CN 204631118U
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- inductive coil
- electric current
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- current inductive
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Abstract
The utility model discloses a kind of novel air magnetic conduction current sensor, belong to current sensing techniques field.The utility model comprises two by six layers of PCB vertical arranged PCB electric current inductive coil of fitting successively from left to right, be coated on inductive coil internal shield and the external shielding layer of PCB electric current inductive coil periphery, external shielding layer comprises two PCB electric current inductive coil holding tanks symmetrical mutually, two PCB electric current inductive coil holding tanks are mutually through, two the PCB electric current inductive coils coated by inductive coil internal shield are placed in PCB electric current inductive coil holding tank respectively, two PCB electric current inductive coil holding tanks after accommodating PCB electric current inductive coil have the chamber portion of the air that contacts with each other.The utility model has that dynamic range is large, measuring accuracy is high, frequency response range is wide, do not have iron core, saturated and ferroresonance problem can not occur, protection that secondary current can not distort, can meet transient is to the requirement of the height such as the linearity and dynamic perfromance.
Description
Technical field
The utility model belongs to current sensing techniques field, especially relevant with a kind of novel air magnetic conduction current sensor.
Background technology
Current sensor mainly Hall element exports Hall voltage signal the magnetic flux of the proportional relation with primary current detected in gathering magnetic circuit after, instrument display is transported to or computer acquisition intuitively reflects the size of electric current (secondary current) after amplifying circuit amplifies, publication number discloses a kind of current sensor for (CN 203616377 U), have pcb board, conductive pole and magnetic core, fixed head, described fixed head is provided with the buckle holding described conductive pole.But this existing current sensor is due to the relation of conductive pole or iron core, ferroresonance and the magnetically saturated problem of iron can be there is, thus secondary current may be caused to distort, for above-mentioned defect, applicant has researched and developed a kind of novel air magnetic conduction current sensor, is intended to overcome ferroresonance and the magnetically saturated problem of iron that above-mentioned current sensor exists due to the relation of conductive pole or iron core thus causes secondary current that the problem of distortion occurs.
Utility model content
The purpose of this utility model is intended to overcome ferroresonance and the magnetically saturated problem of iron that existing current sensor exists due to the relation of conductive pole or iron core thus causes secondary current that the problem of distortion occurs, and provides a kind of novel air magnetic conduction current sensor.
For this reason, the utility model is by the following technical solutions: a kind of novel air magnetic conduction current sensor, described air magnetic conduction current sensor comprises two by six layers of PCB vertical arranged PCB electric current inductive coil of fitting successively from left to right, be coated on inductive coil internal shield and the external shielding layer of described PCB electric current inductive coil periphery, external shielding layer comprises two PCB electric current inductive coil holding tanks symmetrical mutually, two PCB electric current inductive coil holding tanks are mutually through, described two the PCB electric current inductive coils coated by inductive coil internal shield are placed in PCB electric current inductive coil holding tank respectively, two PCB electric current inductive coil holding tanks after accommodating PCB electric current inductive coil have the chamber portion of the air that contacts with each other.
As to technique scheme supplement and perfect, the utility model also comprises with described lower technical characteristic.
Described PCB electric current inductive coil holding tank is ellipticity.
Through by passage between two described PCB electric current inductive coil holding tanks, thus make two holding tanks mutually through.
Described passage is positioned at left side or the right side of described PCB electric current inductive coil.
With described PCB electric current inductive coil, there is space bottom the PCB electric current inductive coil holding tank being positioned at described passage opposition side.
Described PCB electric current inductive coil output terminal is connected with computation chip ADE7759.
Described PCB electric current inductive coil and integrating circuit, amplification and A/D change-over circuit are linked in sequence the modulate circuit plate that forms as digital output interface.
Described inductive coil internal shield and external shielding layer are metallic shielding structure.
Use the utility model can reach following beneficial effect: without the need to iron core in whole inductor of the present utility model, therefore to there is not ferroresonance and the magnetically saturated problem of iron, thus circuit measuring precision can be improved greatly.Air magnetic conduction current sensor structure is the six-layer printed circuit board PCB inductive coil through electric power multicore bus, has two-layer spaced apart metallic shielding structure outside inductive coil, and the differential signal di/dt of electric current secondary singal is exported by inductive coil two ends.This Project Product signal exports with photoelectric figure form; have that dynamic range is large, measuring accuracy is high, frequency response range is wide, there is no iron core, saturated and ferroresonance problem can not occur, protection that secondary current can not distort, can meet transient is to the requirement of the height such as the linearity and dynamic perfromance; this will be conducive to the operation of the relay protection devices such as differential protection, distance protection, overcurrent protection; adapt to the requirement of measurement of power laser, digitizing and networking, technology reaches domestically leading level.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
Embodiment: as shown in Figure 1, the utility model comprises two by six layers of PCB vertical arranged PCB electric current inductive coil 2 of fitting successively from left to right, be coated on inductive coil internal shield 3 and the external shielding layer 1 of PCB electric current inductive coil 2 periphery, external shielding layer 1 comprises two PCB electric current inductive coil holding tanks symmetrical mutually, two PCB electric current inductive coil holding tanks are mutually through, two the PCB electric current inductive coils 2 coated by inductive coil internal shield 3 are placed in PCB electric current inductive coil holding tank respectively, two PCB electric current inductive coil holding tanks after accommodating PCB electric current inductive coil 2 have the chamber portion of the air that contacts with each other.
Preferably, PCB electric current inductive coil holding tank is ellipticity, through by passage between two PCB electric current inductive coil holding tanks, thus makes two holding tanks mutually through.
Further, passage is positioned at left side or the right side of PCB electric current inductive coil 2, has space bottom the PCB electric current inductive coil holding tank being positioned at passage opposition side with PCB electric current inductive coil 2.
Further, PCB electric current inductive coil 2 output terminal is connected with computation chip ADE7759; Or PCB electric current inductive coil 2 and integrating circuit, amplification and A/D change-over circuit are linked in sequence the modulate circuit plate that forms as digital output interface.
Preferably, inductive coil internal shield 3 and external shielding layer 1 are metallic shielding structure.
Without the need to iron core in whole inductor of the present utility model, therefore there is not ferroresonance and the magnetically saturated problem of iron, thus circuit measuring precision can be improved greatly.Air magnetic conduction current sensor structure is the six-layer printed circuit board PCB inductive coil through electric power multicore bus, has two-layer spaced apart metallic shielding structure outside inductive coil, and the differential signal di/dt of electric current secondary singal is exported by inductive coil two ends.This Project Product signal exports with photoelectric figure form; have that dynamic range is large, measuring accuracy is high, frequency response range is wide, there is no iron core, saturated and ferroresonance problem can not occur, protection that secondary current can not distort, can meet transient is to the requirement of the height such as the linearity and dynamic perfromance; this will be conducive to the operation of the relay protection devices such as differential protection, distance protection, overcurrent protection; adapt to the requirement of measurement of power laser, digitizing and networking, technology reaches domestically leading level.
More than show and describe ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (8)
1. a novel air magnetic conduction current sensor, it is characterized in that: described air magnetic conduction current sensor comprises two by six layers of PCB vertical arranged PCB electric current inductive coil (2) of fitting successively from left to right, be coated on the peripheral inductive coil internal shield (3) of described PCB electric current inductive coil (2) and external shielding layer (1), external shielding layer (1) comprises two PCB electric current inductive coil holding tanks symmetrical mutually, two PCB electric current inductive coil holding tanks are mutually through, described two the PCB electric current inductive coils (2) coated by inductive coil internal shield (3) are placed in PCB electric current inductive coil holding tank respectively, two PCB electric current inductive coil holding tanks after accommodating PCB electric current inductive coil (2) have the chamber portion of the air that contacts with each other.
2. a kind of novel air magnetic conduction current sensor according to claim 1, is characterized in that: described PCB electric current inductive coil holding tank is ellipticity.
3. a kind of novel air magnetic conduction current sensor according to claim 2, is characterized in that: through by passage between two described PCB electric current inductive coil holding tanks.
4. a kind of novel air magnetic conduction current sensor according to claim 3, is characterized in that: described passage is positioned at left side or the right side of described PCB electric current inductive coil (2).
5. a kind of novel air magnetic conduction current sensor according to claim 4, is characterized in that: have space with described PCB electric current inductive coil (2) bottom the PCB electric current inductive coil holding tank being positioned at described passage opposition side.
6. a kind of novel air magnetic conduction current sensor according to claim 5, is characterized in that: described PCB electric current inductive coil (2) output terminal is connected with computation chip ADE7759.
7. a kind of novel air magnetic conduction current sensor according to claim 5, is characterized in that: described PCB electric current inductive coil (2) and integrating circuit, amplification and A/D change-over circuit are linked in sequence the modulate circuit plate that forms as digital output interface.
8. a kind of novel air magnetic conduction current sensor according to claim 1,6 or 7, is characterized in that: described inductive coil internal shield (3) and external shielding layer (1) are metallic shielding structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520310692.XU CN204631118U (en) | 2015-05-14 | 2015-05-14 | A kind of novel air magnetic conduction current sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520310692.XU CN204631118U (en) | 2015-05-14 | 2015-05-14 | A kind of novel air magnetic conduction current sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204631118U true CN204631118U (en) | 2015-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520310692.XU Expired - Fee Related CN204631118U (en) | 2015-05-14 | 2015-05-14 | A kind of novel air magnetic conduction current sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204631118U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110178040A (en) * | 2017-01-12 | 2019-08-27 | 日立汽车系统株式会社 | Current detection means |
| CN114034929A (en) * | 2021-11-12 | 2022-02-11 | 国家海洋技术中心 | Non-external field inductive conductivity sensor |
-
2015
- 2015-05-14 CN CN201520310692.XU patent/CN204631118U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110178040A (en) * | 2017-01-12 | 2019-08-27 | 日立汽车系统株式会社 | Current detection means |
| CN110178040B (en) * | 2017-01-12 | 2021-07-30 | 日立汽车系统株式会社 | Current detection device |
| CN114034929A (en) * | 2021-11-12 | 2022-02-11 | 国家海洋技术中心 | Non-external field inductive conductivity sensor |
| CN114034929B (en) * | 2021-11-12 | 2024-04-19 | 国家海洋技术中心 | Non-external field induction type conductivity sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210127 Address after: Room 1101, building 4, Lugu Mingzhu home, 398 Fenglin Third Road, Changsha high tech Development Zone, Changsha City, Hunan Province, 410000 Patentee after: Changsha Meineng new energy Co.,Ltd. Address before: No. 701, superstar entrepreneurial base, No. 8 Lujing Road, Changsha high tech Development Zone, Changsha City, Hunan Province, 410000 Patentee before: CHANGSHA MEINENG ELECTRIC EQUIPMENT Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 |