CN202421290U - Improved current sensor - Google Patents
Improved current sensor Download PDFInfo
- Publication number
- CN202421290U CN202421290U CN2011205745690U CN201120574569U CN202421290U CN 202421290 U CN202421290 U CN 202421290U CN 2011205745690 U CN2011205745690 U CN 2011205745690U CN 201120574569 U CN201120574569 U CN 201120574569U CN 202421290 U CN202421290 U CN 202421290U
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- China
- Prior art keywords
- current sensor
- magnetic
- semi
- semi arch
- cell winding
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Abstract
The utility model relates to the technical field of sensors, in particular to an improved current sensor. One end of a coil winding of the current sensor is connected with a serial interface, and the serial interface is connected with a circuit board electrically. The coil winding of the current sensor comprises a pair of semi-circular magnetic cores arranged correspondingly, an air gap is reserved between the two semi-circular magnetic cores, a non-magnetic conductive metal ring is looped outside the air gap, and an internal-control axis of the non-magnetic conductive metal ring is consistent with lines of magnetic force of the semi-circular magnetic cores. The semi-circular magnetic cores are wound with coils which are electrically connected with the circuit board. Magnetic circuit saturation is avoided, output precision and output range of the pulse current sensor are increased, test flexibility is improved, and measuring error is lowered. Detection signals such as current signals, or voltage signals or digital communication signals are output by the serial interface. In addition, the improved current sensor is reliable in interface connection, convenient to use and stable in transmission.
Description
Technical field
The utility model relates to sensor technical field, especially relates to a kind of improved current sensor.
Background technology
At present, existing current sensor comprises two kinds, and a kind of is on the annulus that magnetic material is processed, evenly to coil; Lead passes the magnetic annulus; This moment, lead was equivalent to the primary winding winding of transformer, and the coil on the annulus is equivalent to the secondary coil winding, when electric current passes through lead; Secondary coil winding on annulus will induce voltage, can restore tested electric current to this voltage integrating meter; Another kind is on magnetic link, to be wound with the secondary coil winding, and vertically near lead, secondary coil winding two ends can induce voltage the magnetic link that has coil, goes out tested electric current to this voltage integrating meter is also reducible.But because pulse current is irregular surge ripple, the intensity difference is big, and it is saturated magnetic circuit to occur; The above like this two kinds of effective measurements that all can't satisfy paired pulses electric current in big range ability; Cause measurement sensitivity low, measuring error is big, in addition the mounting means of the interface output line of existing sensors; Connection line is complicated, occurs the phenomenon of connection error and loose contact easily.
The utility model content
To the deficiency that above-mentioned prior art exists, the purpose of the utility model provides a kind of improved current sensor, it have can make this road do not take place saturated, measure range raising, reliable installation, characteristic of simple structure.
To achieve these goals; The technical scheme that the utility model adopted is: a kind of improved current sensor comprises housing, panel, is located at the cell winding installation portion in the housing and is installed on the wiring board in the housing that said cell winding installation portion is equipped with the cell winding group; Said cell winding group one end is connected with serial line interface; Said serial line interface is electrically connected with said wiring board, and said cell winding group comprises a pair of corresponding semi arch magnetic core that is provided with, and is air gap between two semi arch magnetic cores; Said air gap is arranged with no magnetic metallic conduction ring outward; The internal control axis of said no magnetic metallic conduction ring is consistent with the magnetic line of force of said semi arch magnetic core, is wound with coil on the said semi arch magnetic core, and said coil is electrically connected with said wiring board.
Wherein, said semi arch magnetic core is arranged in the cavity of said housing and the formation of said panel.
After adopting said structure, the utility model is compared the advantage that is had with prior art and is: comprise housing, panel, be located at the cell winding installation portion in the housing and be installed on the wiring board in the housing, said cell winding installation portion is equipped with the cell winding group; Said cell winding group one end is connected with serial line interface, and said serial line interface is electrically connected with said wiring board, and said cell winding group comprises a pair of corresponding semi arch magnetic core that is provided with; Be air gap between two semi arch magnetic cores; Said air gap is arranged with no magnetic metallic conduction ring outward, and the internal control axis of said no magnetic metallic conduction ring is consistent with the magnetic line of force of said semi arch magnetic core, is wound with coil on the said semi arch magnetic core; Said coil is electrically connected with said wiring board; This use new model has been installed two no magnetic metallic conduction rings respectively in two gaps of two semicircle camber magnetic cores symmetry, make in the gap at two semicircle camber magnetic core two ends and form air-gap field, passes two no magnetic metallic conduction rings and by two no magnetic metallic conduction rings encirclements; Will produce the radial loop electric current in two no magnetic metallic conduction rings; Two no magnetic metallic conduction rings make two air-gap magnetic field energies change heat energy into through two no magnetic metallic conduction rings through producing Joule heat behind the electric current, and therefore the saturated phenomenon in this road can not appear in two semi arch magnetic cores; The output accuracy and the output area of pulses of current sensor have been improved; Improve the sensitivity of test, reduced measuring error, in addition; Through detection signals such as serial line interface output current signal, voltage signal or digital communication signals, but the utility model interface connects reliable, easy to use and transmission is stable.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the structural representation of the utility model cell winding group.
Among the figure: 1, housing; 2, panel;
4, wiring board; 5, cell winding group;
6, serial line interface; 7, semi arch magnetic core;
8, air gap; 9, no magnetic metallic conduction ring;
10, coil.
Embodiment
The following stated is merely the preferred embodiment of the utility model, does not therefore limit the protection domain of the utility model.
As depicted in figs. 1 and 2: a kind of improved current sensor; Comprise housing 1, panel 2, be located at the cell winding installation portion in the housing 1 and be installed on the wiring board 4 in the housing 1; Said cell winding installation portion is equipped with cell winding group 5; Said cell winding group 5 one ends are connected with serial line interface 6, and said serial line interface 6 is electrically connected with said wiring board 4, and said cell winding group 5 comprises a pair of corresponding semi arch magnetic core 7 that is provided with; Be air gap 8 between two semi arch magnetic cores 7; Be arranged with no magnetic metallic conduction ring 9 outside the said air gap 8, the internal control axis of said no magnetic metallic conduction ring 9 is consistent with the magnetic line of force of said semi arch magnetic core 7, is wound with coil 10 on the said semi arch magnetic core 7; Said coil 10 is electrically connected with said wiring board 4, and said semi arch magnetic core 7 is arranged in the cavity of said housing 1 and 2 formation of said panel.
The utility model has been installed two no magnetic metallic conduction rings 9 respectively in two gaps of two semicircle camber magnetic core symmetries; Make and form air gap 8 magnetic fields in the gap at two semicircle camber magnetic core two ends; Pass two no magnetic metallic conduction rings 9 and by two no magnetic metallic conduction rings 9 encirclements, will produce the radial loop electric current in two no magnetic metallic conduction rings 9, two no magnetic metallic conduction rings 9 are through producing Joule heat behind the electric current; Make two air gap 8 magnetic field energys change heat energy into through two no magnetic metallic conduction rings 9; Therefore the saturated phenomenon in this road can not appear in two semi arch magnetic cores 7, has improved the output accuracy and the output area of pulses of current sensor, has improved the sensitivity of test; Reduced measuring error; In addition, through detection signals such as serial line interface 6 output current signals, voltage signal or digital communication signals, but the utility model interface connects reliable, easy to use and transmission is stable.
The above only is the preferred embodiments of the utility model, so all equivalences of doing according to the described structure of the utility model patent claim, characteristic and principle change or modify, includes in the utility model patent claim.
Claims (2)
1. improved current sensor; Comprise housing (1), panel (2), be located at the cell winding installation portion in the housing (1) and be installed on the wiring board (4) in the housing (1); Said cell winding installation portion is equipped with cell winding group (5), it is characterized in that: said cell winding group (5) one ends are connected with serial line interface (6), and said serial line interface (6) is electrically connected with said wiring board (4); Said cell winding group (5) comprises a pair of corresponding semi arch magnetic core (7) that is provided with; Be air gap (8) between two semi arch magnetic cores (7), said air gap (8) is outer to be arranged with no magnetic metallic conduction ring (9), and the internal control axis of said no magnetic metallic conduction ring (9) is consistent with the magnetic line of force of said semi arch magnetic core (7); Be wound with coil (10) on the said semi arch magnetic core (7), said coil (10) is electrically connected with said wiring board (4).
2. a kind of improved current sensor according to claim 1 is characterized in that: said semi arch magnetic core (7) is arranged in the cavity of said housing (1) and said panel (2) formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205745690U CN202421290U (en) | 2011-12-28 | 2011-12-28 | Improved current sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205745690U CN202421290U (en) | 2011-12-28 | 2011-12-28 | Improved current sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202421290U true CN202421290U (en) | 2012-09-05 |
Family
ID=46746043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205745690U Expired - Fee Related CN202421290U (en) | 2011-12-28 | 2011-12-28 | Improved current sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202421290U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108663559A (en) * | 2017-03-27 | 2018-10-16 | 株式会社田村制作所 | Current detector |
-
2011
- 2011-12-28 CN CN2011205745690U patent/CN202421290U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108663559A (en) * | 2017-03-27 | 2018-10-16 | 株式会社田村制作所 | Current detector |
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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 | ||
| CP01 | Change in the name or title of a patent holder |
Address after: BaoFeng road 315500 Zhejiang city of Fenghua Province East Development Zone No. 61 Patentee after: NINGBO JINCHENG ELECTRONIC TECHNOLOGY CO., LTD. Address before: BaoFeng road 315500 Zhejiang city of Fenghua Province East Development Zone No. 61 Patentee before: NINGBO JINCHENG ELECTRONIC TECHNOLOGY 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: 20120905 Termination date: 20171228 |