CN102707115A - Anti-alternating magnetic field interference current divider - Google Patents
Anti-alternating magnetic field interference current divider Download PDFInfo
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- CN102707115A CN102707115A CN2012101821302A CN201210182130A CN102707115A CN 102707115 A CN102707115 A CN 102707115A CN 2012101821302 A CN2012101821302 A CN 2012101821302A CN 201210182130 A CN201210182130 A CN 201210182130A CN 102707115 A CN102707115 A CN 102707115A
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- sampling
- magnetic field
- shunt
- alternating magnetic
- sample line
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Abstract
The invention discloses an anti-alternating magnetic field interference current divider, which comprises current divider connection parts connected with a wire, the current divider connection parts are connected with a sampling resistor; the lower parts of two sampling wires are fixed in a sample wire fixing bracket; the upper parts of the two sampling wires penetrate the sampling wire fixing bracket, and are hinged with each other to extend in a spiral manner; and the lower parts of the two sampling wires are respectively connected with the two sampling ends of the sampling resistor. The current divider has the advantages of reasonable structure, simplicity in manufacturing process and principle, high anti-magnetic field interference capacity, and artful application.
Description
Technical field
The present invention relates to a kind of electrical measurement element, especially a kind of anti-alternating magnetic field disturbs shunt.
Background technology
Shunt is widely used in enlarging the instrument measurement range of current, and the sampling that can be used for communication system, complete electronic set, measurement instrument, robotization control etc. are used detects.The key property of shunt is a low resistance device, and it is provided with sampling end.The principle of shunt is through sample line the voltage of the electric current generation of the shunt resistance of flowing through to be sampled; Traditional shunt does not have specific (special) requirements to the winding of sample line and the position of sampling end points; Can accurately sample to voltage, electric current under this shunt ground normal condition; But under the situation of the interference that receives extraneous alternating magnetic field, the precision of its sampling receives bigger influence, can't operate as normal.
Shunt is the high precision components that is widely used in voltage, current sample in the various instrument and meters; Especially the shunt that relates to the sampling element that is used for electronic electric energy meter metering electric energy; The power voltage supply that electric current produces through the pressure drop of shunt resistive element can be shown the metering sampling, and its electric current variation range is bigger, in order to reduce the power consumption of heating and reduction itself; The resistive element resistance of shunt is less; The voltage that is produced is generally millivolt level, disturbed by transformer, the mutual inductor alternating magnetic field of self usefulness in the electric energy meter, more can receive outside alternating magnetic field and disturb and cause sampled signal can not accurately measure electric energy.From the operational effect of reality, such interference phenomenon can cause the consequence of two kinds of especially severes, is a kind ofly disturbed the electric energy meter operate as normal by some lawless persons with alternating magnetic field, thereby reaches the purpose of stealing; Another kind is that metering is incorrect, even under the non-electric situation of user, electric energy meter also can measure, and causes economic dispute.
Summary of the invention
The object of the present invention is to provide a kind of rational in infrastructurely, the anti-alternating magnetic field that the interference performance of anti-alternating magnetic field is strong disturbs shunt.
Technical solution of the present invention is:
A kind of anti-alternating magnetic field disturbs shunt; It is characterized in that: comprise the shunt coupling part that is connected with lead; The shunt coupling part is connected with the sampling resistor body; The bottom of two sample line is fixed in the sample line fixed support, and the top of two sample line passes sampling fixed support, the stranded extension of spiral, and the lower end of two sample line is connected with two sampling end points of sampling resistor body respectively.
Sample line is the electric conductor that in alternating magnetic field, produces induced voltage and electromotive force; This electric conductor is corresponding with the sampling section of shunt resistive element in size, shape, position; Produce one with the sampling resistor body on the induced voltage and the electromotive force that produce on the induced voltage that produces and electromotive force induced voltage in the opposite direction and electromotive force and the sampling resistor body balance each other.
Fixed support is fixed on the working of plastics on the sampling resistor body for fitting.The bottom of two sample line is fixed in the sample line fixed support, takes the shape of the letter U.
The present invention is rational in infrastructure, and production technology is simple, and diamagnetic interference performance is strong, and principle is simple, uses ingenious.According to Faraday's electromagnetic induction law, when alternating magnetic field passed conductor, conductor can produce induced voltage and electromotive force; When externally alternating magnetic field disturbed, shunt because certainly exist certain area, also certainly led to induced voltage and electromotive force as electric conductor, and this is the reason that traditional shunt is disturbed by alternating magnetic field easily; The present invention utilizes sample line to make a meeting produces induced voltage and electromotive force in alternating magnetic field electric conductor in addition dexterously; This electric conductor is corresponding with the sampling section of shunt resistive element on size, shape, position; Produce an induced voltage in the opposite direction and electromotive force; Can balance each other with the induced voltage and the electromotive force that produce on traditional shunt, can prevent that alternating magnetic field from disturbing the sampling of shunt.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Fig. 1 is the structural representation of one embodiment of the invention.
Embodiment
A kind of anti-alternating magnetic field disturbs shunt; Comprise the shunt coupling part 1,7 that is connected with lead 4; The shunt coupling part is connected with sampling resistor body 2; The bottom of two sample line 5,6 is fixed in the sample line fixed support 3, and the top of two sample line 5,6 passes sampling fixed support, the stranded extension of spiral, and the lower end of two sample line is connected with two sampling end points 9,8 of sampling resistor body respectively.
Sample line is the electric conductor that in alternating magnetic field, produces induced voltage and electromotive force; This electric conductor is corresponding with the sampling section of shunt resistive element in size, shape, position; Produce one with the sampling resistor body on the induced voltage and the electromotive force that produce on the induced voltage that produces and electromotive force induced voltage in the opposite direction and electromotive force and the sampling resistor body balance each other.
Fixed support is fixed on the working of plastics on the sampling resistor body for fitting.The bottom of two sample line is fixed in the sample line fixed support, takes the shape of the letter U, and makes serviceability better.
Claims (4)
1. an anti-alternating magnetic field disturbs shunt; It is characterized in that: comprise the shunt coupling part that is connected with lead; The shunt coupling part is connected with the sampling resistor body; The bottom of two sample line is fixed in the sample line fixed support, and the top of two sample line passes sampling fixed support, the stranded extension of spiral, and the lower end of two sample line is connected with two sampling end points of sampling resistor body respectively.
2. anti-alternating magnetic field according to claim 1 disturbs shunt; It is characterized in that: sample line is for producing the electric conductor of induced voltage and electromotive force in alternating magnetic field; This electric conductor is corresponding with the sampling section of shunt resistive element in size, shape, position; Produce one with the sampling resistor body on the induced voltage and the electromotive force that produce on the induced voltage that produces and electromotive force induced voltage in the opposite direction and electromotive force and the sampling resistor body balance each other.
3. anti-alternating magnetic field according to claim 1 and 2 disturbs shunt, it is characterized in that: fixed support is fixed on the working of plastics on the sampling resistor body for fitting.
4. anti-alternating magnetic field according to claim 1 and 2 disturbs shunt, and it is characterized in that: the bottom of two sample line is fixed in the sample line fixed support, takes the shape of the letter U.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101821302A CN102707115A (en) | 2012-06-05 | 2012-06-05 | Anti-alternating magnetic field interference current divider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101821302A CN102707115A (en) | 2012-06-05 | 2012-06-05 | Anti-alternating magnetic field interference current divider |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102707115A true CN102707115A (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101821302A Pending CN102707115A (en) | 2012-06-05 | 2012-06-05 | Anti-alternating magnetic field interference current divider |
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| CN (1) | CN102707115A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076475A (en) * | 2013-01-10 | 2013-05-01 | 浙江力辉电器有限公司 | Anti-interference manganese-copper current divider |
| EP2924448A4 (en) * | 2012-11-26 | 2016-07-20 | Xiamen Hongfa Electric Power Controls Co Ltd | Electronic electric meter resistant to alternating magnetic field interferences |
| CN103257260B (en) * | 2012-10-24 | 2017-02-08 | 惠州市惠之声实业有限公司 | Method for resisting alternating magnetic field interference and sample resistor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200976020Y (en) * | 2006-10-20 | 2007-11-14 | 深圳长城开发科技股份有限公司 | Current divider |
| CN102323459A (en) * | 2011-08-12 | 2012-01-18 | 桐乡市伟达电子有限公司 | Alternating magnetic field-resistant manganin current divider |
| CN202172047U (en) * | 2011-07-25 | 2012-03-21 | 江苏林洋电子股份有限公司 | Strong magnetic resisting relay |
| CN202661520U (en) * | 2012-06-05 | 2013-01-09 | 江苏林洋电子股份有限公司 | Anti-alternating magnetic field interference shunt |
-
2012
- 2012-06-05 CN CN2012101821302A patent/CN102707115A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200976020Y (en) * | 2006-10-20 | 2007-11-14 | 深圳长城开发科技股份有限公司 | Current divider |
| CN202172047U (en) * | 2011-07-25 | 2012-03-21 | 江苏林洋电子股份有限公司 | Strong magnetic resisting relay |
| CN102323459A (en) * | 2011-08-12 | 2012-01-18 | 桐乡市伟达电子有限公司 | Alternating magnetic field-resistant manganin current divider |
| CN202661520U (en) * | 2012-06-05 | 2013-01-09 | 江苏林洋电子股份有限公司 | Anti-alternating magnetic field interference shunt |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103257260B (en) * | 2012-10-24 | 2017-02-08 | 惠州市惠之声实业有限公司 | Method for resisting alternating magnetic field interference and sample resistor |
| EP2924448A4 (en) * | 2012-11-26 | 2016-07-20 | Xiamen Hongfa Electric Power Controls Co Ltd | Electronic electric meter resistant to alternating magnetic field interferences |
| CN103076475A (en) * | 2013-01-10 | 2013-05-01 | 浙江力辉电器有限公司 | Anti-interference manganese-copper current divider |
| CN103076475B (en) * | 2013-01-10 | 2015-01-07 | 浙江力辉电器有限公司 | Anti-interference manganese-copper current divider |
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Application publication date: 20121003 |