CN107907727A - Double-iron core closed-loop current sensors - Google Patents
Double-iron core closed-loop current sensors Download PDFInfo
- Publication number
- CN107907727A CN107907727A CN201711433646.9A CN201711433646A CN107907727A CN 107907727 A CN107907727 A CN 107907727A CN 201711433646 A CN201711433646 A CN 201711433646A CN 107907727 A CN107907727 A CN 107907727A
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- China
- Prior art keywords
- iron core
- double
- core
- current sensors
- loop current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/20—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices
- G01R15/202—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices using Hall-effect devices
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The present invention provides a kind of double-iron core closed-loop current sensors, it includes circuit board, winding coil, the iron core shell wound by winding coil, further includes imperforation iron core, open core and field sensing component；The imperforation iron core and open core are respectively positioned in iron core shell, and the opening magnet is equipped with the opening through open core, and the field sensing component is placed in the opening.Double-iron core double-iron core closed-loop current sensors of the present invention, by the way that field sensing component is placed in the opening of open core, solving single iron core, there are the problems such as output current oscillations, overshoot and eccentric indeterminacy in dynamic response, it is greatly improved the dynamic indicator of double-iron core closed-loop current sensors, output current oscillations and overshoot are effectively reduced, while greatly reduces the eccentric phenomena caused by magnetic resistance inequality.
Description
Technical field
The invention belongs to the technical field of sensor, more particularly to a kind of double-iron core double-iron core closed-loop current sensors.
Background technology
Sensor is a kind of detection device, can detect the relevant information of tested equipment, be transformed into electric signal according to certain rules
Or the information output of other required forms, to meet the requirement such as the transmission of information, processing, storage, display, record and control.Pass
Sensor application range is very extensive, and a kind of necessary technical support is provided for instrumentation devices.Hall current sensor is should
A kind of current measuring element that isolation detection is carried out to primary current developed with Hall effect principle, what primary current produced
As collected by magnetism gathering rings, the Hall element being placed in magnetism gathering rings is acquired magnetic field in magnetic field, produces one and primary side magnetic field etc.
The Hall voltage of ratio, by the size for measuring the Hall voltage, so that it may realize the isolation detection to primary current.
The iron core used in closed-loop current sensors currently on the market is usually the single iron core with open, it is being surveyed directly
It can meet application during galvanic electricity stream.But, then can be due to iron core opening magnetic resistance and winding as trace pulse rushes electric current on dynamic response
The inductive impact of coil, phenomena such as causing output current that vibration, overshoot and eccentric indeterminacy occurs.To solve the problems, such as this, this
Invention devises a kind of double-iron core closed-loop current sensors.
The content of the invention
It is an object of the invention to provide a kind of double-iron core closed loop current that can be improved dynamic response and reduce eccentric phenomena
Sensor.
The present invention provides a kind of double-iron core closed-loop current sensors, it includes circuit board, winding coil, is twined by winding coil
Around iron core shell, further include imperforation iron core, open core and field sensing component；The imperforation iron core and opening iron
Core is respectively positioned in iron core shell, and the opening magnet is equipped with the opening through open core, and the field sensing component is placed on
In the opening.
Preferably, the imperforation iron core and open core are overlapping puts or is placed in up and down in the iron core shell.
Preferably, the imperforation iron core is located at the lower section of open core, the outside diameter of imperforation iron core and open core and
Internal diameter all same.
Preferably, the imperforation iron core and open core lay out in parallel or inside and outside it is placed in the iron core shell.
Preferably, the field sensing component is Hall chip, magnetoresistance device or fluxgate magnetic core.
Preferably, the open core refers to cut away the iron highly identical with open core in the cross-wise direction along iron core
Core, it is unclosed ring body also to leave part iron core.
Preferably, the double-iron core closed-loop current sensors are located in product casing, are equipped with least in the product casing
One collecting cavity and the cylinder in host cavity body, double-iron core closed-loop current sensors are located at the collecting of product casing
In cavity.
Double-iron core double-iron core closed-loop current sensors of the present invention, by the way that field sensing component is placed on opening for open core
In mouthful, single iron core is solved in dynamic response there are the problems such as output current oscillations, overshoot and eccentric indeterminacy, is greatly improved
The dynamic indicator of double-iron core closed-loop current sensors, effectively reduces output current oscillations and overshoot, while greatly reduces because of magnetic resistance
Eccentric phenomena caused by inequality.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the decomposition diagram of double-iron core closed-loop current sensors of the present invention；
Fig. 2 is the top view of double-iron core closed-loop current sensors shown in Fig. 1.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
A kind of double-iron core closed-loop current sensors of the present invention, mainly solving single iron core, there are output current in dynamic response
The problems such as vibration, overshoot and eccentric indeterminacy, the present invention can be used for measurement DC current, alternating current and pulse current.
As depicted in figs. 1 and 2, double-iron core closed-loop current sensors include circuit board 1, winding coil 2, iron core shell 3, nothing
Open core 5, open core 4 and the field sensing component 7 being placed in open core 4, this double-iron core closed loop current sensing
Device is located in product casing 6.Wherein, imperforation iron core 5 and open core 4 can overlapping (or up and down) be placed in iron core shell 3
Or side by side (or inside and outside) be placed in iron core shell 3, in the present embodiment, imperforation iron core 5 and open core 4 are overlapping pendulum
Put, i.e.,：Imperforation iron core 5 is located at the lower section of open core 4, and the outside diameter and internal diameter of imperforation iron core 5 and open core 4 are homogeneous
Together.
Open core 4 is equipped with the opening 41 through open core 4, and field sensing component 7 is placed in opening 41.Examine in magnetic field
Survey element 7 is Hall chip, magnetoresistance device, fluxgate magnetic core or other chips etc., and in present case, field sensing component 7 is
For Hall chip.
Open core 4 refers to cut away the iron core highly identical with open core in the cross-wise direction along iron core, also leaves
Part iron core is unclosed ring body.
Imperforation iron core 5 and open core 4 are put in iron core shell 3.Winding coil 2 is wound with iron core shell 3.Circuit
Plate 1 and winding coil 2 are put in product casing 6.
By the way that field sensing component 7 is placed in the opening 41 of open core 4, solves single iron core and deposited in dynamic response
Output current oscillations, overshoot and the eccentric indeterminacy the problems such as, the dynamic property of double-iron core closed-loop current sensors is greatly improved.
The assembling mode of this double-iron core closed-loop current sensors is：Imperforation iron core 5 and open core 4 are respectively positioned on outside iron core
In shell 3, winding coil 2 is wound with iron core shell 3, circuit board 1 and winding coil 2 are put in product casing 6.
Equipped with least one collecting cavity 61 and positioned at the cylinder 62 housed in cavity 61, this pair of iron in product casing 6
Core closed-loop current sensors are located in the collecting cavity 61 of product casing 6, and imperforation iron core 5 and open core 4 are set in cylinder
On 52, iron core shell 3 is set on imperforation iron core 5 and open core 4, and winding coil 2 is around being located on iron core shell 3 and bypass
Half opening iron core 4, circuit board 1 are fixed on iron core shell 3, if necessary, are consolidated double-iron core closed-loop current sensors using encapsulating
It is scheduled in product casing 6.
Double-iron core double-iron core closed-loop current sensors of the present invention, by the way that field sensing component is placed on opening for open core
In mouthful, single iron core is solved in dynamic response there are the problems such as output current oscillations, overshoot and eccentric indeterminacy, is greatly improved
The dynamic indicator of double-iron core closed-loop current sensors, effectively reduces output current oscillations and overshoot, while greatly reduces because of magnetic resistance
Eccentric phenomena caused by inequality.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
Subject to.
Claims (7)
1. a kind of double-iron core closed-loop current sensors, it includes circuit board, winding coil, outside the iron core by winding coil winding
Shell, it is characterised in that：Further include imperforation iron core, open core and field sensing component；The imperforation iron core and opening
Iron core is respectively positioned in iron core shell, and the opening magnet is equipped with the opening through open core, and the field sensing component is placed
In the opening.
2. double-iron core closed-loop current sensors according to claim 1, it is characterised in that：The imperforation iron core and opening
Iron core is overlapping to be put or is placed in up and down in the iron core shell.
3. double-iron core closed-loop current sensors according to claim 2, it is characterised in that：The imperforation iron core, which is located at, to be opened
The outside diameter and internal diameter all same of the lower section of mouth iron core, imperforation iron core and open core.
4. double-iron core closed-loop current sensors according to claim 1, it is characterised in that：The imperforation iron core and opening
Iron core lay out in parallel is inside and outside placed in the iron core shell.
5. double-iron core closed-loop current sensors according to any one of claims 1 to 4, it is characterised in that：The magnetic field detection
Element is Hall chip, magnetoresistance device or fluxgate magnetic core.
6. double-iron core closed-loop current sensors according to any one of claims 1 to 4, it is characterised in that：The open core
Refer to cut away the iron core highly identical with open core in the cross-wise direction along iron core, it is unclosed also to leave part iron core
Ring body.
7. double-iron core closed-loop current sensors according to any one of claims 1 to 4, it is characterised in that：The double-iron core closes
Circular current sensor is located in product casing, at least one collecting cavity is equipped with the product casing and positioned at host cavity
Internal cylinder, double-iron core closed-loop current sensors are located in the host cavity body of product casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711433646.9A CN107907727A (en) | 2017-12-26 | 2017-12-26 | Double-iron core closed-loop current sensors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711433646.9A CN107907727A (en) | 2017-12-26 | 2017-12-26 | Double-iron core closed-loop current sensors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107907727A true CN107907727A (en) | 2018-04-13 |
Family
ID=61871350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711433646.9A Pending CN107907727A (en) | 2017-12-26 | 2017-12-26 | Double-iron core closed-loop current sensors |
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| Country | Link |
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| CN (1) | CN107907727A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109142837A (en) * | 2018-09-30 | 2019-01-04 | 宁波中车时代传感技术有限公司 | A kind of new-energy automobile double-range current sensor |
| EP4394397A4 (en) * | 2021-11-04 | 2025-01-01 | China Electric Power Res Inst | RING-SHAPED MAGNETIC CORE ARRAY MULTIRING MAGNETOSENSITIVE CURRENT SENSOR AND CURRENT MEASUREMENT METHODS |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1547035A (en) * | 2003-12-12 | 2004-11-17 | 华中科技大学 | a current sensor |
| CN101692399A (en) * | 2009-09-30 | 2010-04-07 | 淄博元星电子有限公司 | Transient current transformer |
| CN203672938U (en) * | 2013-11-06 | 2014-06-25 | 北京柏艾斯科技有限公司 | AC-DC universal leakage-current sensor |
| CN209264811U (en) * | 2017-12-26 | 2019-08-16 | 深圳市艾华迪技术有限公司 | Double-iron core closed-loop current sensors |
-
2017
- 2017-12-26 CN CN201711433646.9A patent/CN107907727A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1547035A (en) * | 2003-12-12 | 2004-11-17 | 华中科技大学 | a current sensor |
| CN101692399A (en) * | 2009-09-30 | 2010-04-07 | 淄博元星电子有限公司 | Transient current transformer |
| CN203672938U (en) * | 2013-11-06 | 2014-06-25 | 北京柏艾斯科技有限公司 | AC-DC universal leakage-current sensor |
| CN209264811U (en) * | 2017-12-26 | 2019-08-16 | 深圳市艾华迪技术有限公司 | Double-iron core closed-loop current sensors |
Non-Patent Citations (1)
| Title |
|---|
| 程兴国;但强;孙珍军;叶波;邓超;刘胜;: "一种新型闭环式双铁芯霍尔电流传感器的建模与实现", 传感器与微系统, no. 11, pages 68 - 70 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109142837A (en) * | 2018-09-30 | 2019-01-04 | 宁波中车时代传感技术有限公司 | A kind of new-energy automobile double-range current sensor |
| CN109142837B (en) * | 2018-09-30 | 2021-08-24 | 宁波中车时代传感技术有限公司 | Double-range current sensor for new energy automobile |
| EP4394397A4 (en) * | 2021-11-04 | 2025-01-01 | China Electric Power Res Inst | RING-SHAPED MAGNETIC CORE ARRAY MULTIRING MAGNETOSENSITIVE CURRENT SENSOR AND CURRENT MEASUREMENT METHODS |
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