CN202854203U - Circuit employing double manganese bronze design external magnetic field interference resistance - Google Patents
Circuit employing double manganese bronze design external magnetic field interference resistance Download PDFInfo
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- CN202854203U CN202854203U CN 201220498266 CN201220498266U CN202854203U CN 202854203 U CN202854203 U CN 202854203U CN 201220498266 CN201220498266 CN 201220498266 CN 201220498266 U CN201220498266 U CN 201220498266U CN 202854203 U CN202854203 U CN 202854203U
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- copper
- manganese
- manganese bronze
- magnetic field
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Abstract
A circuit employing double manganese bronze design external magnetic field interference resistance is disclosed. A double manganese bronze interference resistance circuit comprises two manganese bronze pieces with same shape and structure and same impedance and an insulated isolation piece. The two manganese bronze pieces are divided into a first manganese bronze piece and a second manganese bronze piece. The first manganese bronze piece is laminated at a lower side of the second manganese bronze piece. The insulated isolation piece is clamped by the first manganese bronze piece and the second manganese bronze piece. One side of the first manganese bronze piece is provided with a first sampling line and a second sampling line. One side of the second manganese bronze piece is provided with a third sampling line and a fourth sampling line. The first sampling line is connected with the fourth sampling line, and the second sampling line is connected with the third sampling line. The circuit has the advantages that a reverse signal generated by a space magnetic field on an extra second manganese bronze piece is used to counteract an interference signal generated the space magnetic field on the first manganese bronze piece, and the counteraction of magnetic field interference is realized.
Description
Technical field
The utility model relates to the circuit that adopts two copper-manganeses to design anti-external magnetic field interference, and the two copper-manganeses of employing that relate in particular to a kind of electronic electric energy meter field design the circuit that anti-external magnetic field disturbs.
Background technology
The current electronic electric energy meter particularly general element that adopts of current sample parts of single-phase electronic energy meter is single copper-manganese.Because it has good stability, the characteristics that temperature variation is little can adapt in the instrument of electric energy meter and the relevant large current sample of needs, are a small voltage signal with the impedance transformation of large current signal by copper-manganese itself, thus the sampling of realization electric current.This device has had the history of decades as the sampling device of the current sample device, particularly single-phase electric energy meter of electronic electric energy meter, until in still using as a kind of necessary sampling device today.
Present most single-phase electric energy meter all uses the monolithic copper-manganese as the sampling of live wire electric current, realizes the function of metering.Current this copper-manganese and outlet method are owing to its intrinsic eddy current, electromagnetic induction characteristic, causing externally, high-intensity magnetic field disturbs, particularly in the situation with frequency homophase magnetic interference, can produce one with the superimposed undesired signal of actual samples electric current, cause the inaccurate of sampling, the result of impact sampling.Because that disturbs is uncertain, this interference is difficult to carry out filtering with software approach.At present general way be reduce loop area, increase magnetic field shielding, away from magnetic interference etc., head it off fundamentally.
Because a large amount of single-phase electric energy meters that use in the electrical network, there is in a large number similar interference source in the installation environment of electric energy meter, cause electric energy meter not have improper metering (anti-dive lost efficacy) in the electricity consumption situation and the error change in the normal electricity consumption situation the user, brought a lot of puzzlements for users.
The utility model content
In order to solve above-mentioned the deficiencies in the prior art and shortcoming, the utility model provides a kind of signal superposition principle of utilizing, for undesired signal in contrast of undesired signal stack, thereby so that superposeing mutually, two signals of a positive and a negative offset the circuit that the two copper-manganeses of the employing of disturbing design anti-external magnetic field interference.
Adopt two copper-manganeses design circuit that anti-external magnetic field disturbs comprise the identical and impedance phase of shape and structure with two copper-manganese sheets and insulation spacer, described two copper-manganese sheets are divided into the first copper-manganese sheet and the second copper-manganese sheet, the first copper-manganese sheet is superimposed on the second copper-manganese sheet downside, accompany insulation spacer between the first copper-manganese sheet and the second copper-manganese sheet, the first copper-manganese sheet one side is provided with the first sample line and the second sample line, the second copper-manganese sheet one side is provided with the 3rd sample line and the 4th sample line, the first sample line connects with the 4th sample line, and the second sample line connects with the 3rd sample line.
Preferably, described the first copper-manganese sheet one end is connected with the live wire loop.
The beneficial effects of the utility model are: adopt two copper-manganese sheets as the live wire current sample of single-phase electric energy meter, wherein one is access live wire loop, sampling is used as normal signal, a slice is superimposed upon on this normal copper-manganese in addition, pass through physical isolation between the two, two copper-manganese sheet bodies connect without physics, the extra copper-manganese sheet sampling circuit reversal connection that increases is at the terminals of normal sampling copper-manganese, the first copper-manganese sheet one side is provided with the first sample line and the second sample line, the second copper-manganese sheet one side is provided with the 3rd sample line and the 4th sample line, the first sample line connects with the 4th sample line, the second sample line connects with the 3rd sample line, adopt same impedance, two copper-manganese sheets of identical encirclement area, utilize space magnetic field to offset the undesired signal that space magnetic field produces at the first copper-manganese sheet at the reverse signal that the second extra copper-manganese sheet produces, thereby realize the counteracting of magnetic interference.
Description of drawings
Fig. 1 is one-piece construction schematic diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with embodiment and accompanying drawing, but protection domain of the present utility model is not limited to this.
Embodiment 1
As shown in Figure 1, adopt two copper-manganeses design circuit that anti-external magnetic field disturbs comprise the identical and impedance phase of shape and structure with two copper-manganese sheets and insulation spacer 2, described two copper-manganese sheets are divided into the first copper-manganese sheet 3 and the second copper-manganese sheet 1, the first copper-manganese sheet 3 is superimposed on the second copper-manganese sheet 1 downside, accompany insulation spacer 2 between the first copper-manganese sheet 3 and the second copper-manganese sheet 1, the first copper-manganese sheet 3 one sides are provided with the first sample line 6 and the second sample line 7, the second copper-manganese sheet 1 one sides are provided with the 3rd sample line 4 and the 4th sample line 5, the first sample line 6 connects with the 4th sample line 5, the second sample line 7 connects with the 3rd sample line 4, and the first copper-manganese sheet 3 one ends are connected with the live wire loop.
Contain two copper-manganese sheets of protecting to some extent feature; wherein a slice is by rigidity or soft being connected on the large-signal loop; or by on the relay with on-off function; when having electric current to pass through; two copper-manganeses are finished the conversion of large-signal electric current to small signal; and utilize wire that the small signal at sampled point two ends is transferred in the measurement loop, and make metering circuit obtain sampled signal, thus the collection of settling signal.
At last, should be pointed out that above embodiment only is the more representational example of the utility model.Obviously, the utility model is not limited to above-described embodiment, and many distortion can also be arranged.Every foundation technical spirit of the present utility model all should be thought to belong to protection domain of the present utility model to any simple modification, equivalent variations and modification that above embodiment does.
Claims (1)
1. adopt two copper-manganeses to design the circuit that anti-external magnetic field disturbs, it is characterized in that: the described pair of copper-manganese anti-jamming circuit comprise the identical and impedance phase of shape and structure with two copper-manganese sheets and insulation spacer, described two copper-manganese sheets are divided into the first copper-manganese sheet and the second copper-manganese sheet, the first copper-manganese sheet is superimposed on the second copper-manganese sheet downside, accompany insulation spacer between the first copper-manganese sheet and the second copper-manganese sheet, the first copper-manganese sheet one side is provided with the first sample line and the second sample line, the second copper-manganese sheet one side is provided with the 3rd sample line and the 4th sample line, the first sample line connects with the 4th sample line, and the second sample line connects with the 3rd sample line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220498266 CN202854203U (en) | 2012-09-27 | 2012-09-27 | Circuit employing double manganese bronze design external magnetic field interference resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220498266 CN202854203U (en) | 2012-09-27 | 2012-09-27 | Circuit employing double manganese bronze design external magnetic field interference resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202854203U true CN202854203U (en) | 2013-04-03 |
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ID=47985386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220498266 Expired - Lifetime CN202854203U (en) | 2012-09-27 | 2012-09-27 | Circuit employing double manganese bronze design external magnetic field interference resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202854203U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854356A (en) * | 2012-09-27 | 2013-01-02 | 杭州炬华科技股份有限公司 | Circuit for resisting external magnetic field interferences by adopting dual-manganese-copper design |
-
2012
- 2012-09-27 CN CN 201220498266 patent/CN202854203U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854356A (en) * | 2012-09-27 | 2013-01-02 | 杭州炬华科技股份有限公司 | Circuit for resisting external magnetic field interferences by adopting dual-manganese-copper design |
| CN102854356B (en) * | 2012-09-27 | 2015-08-05 | 杭州炬华科技股份有限公司 | Two copper-manganese is adopted to design the circuit of anti-external magnetic field interference |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130403 |