CN103383401B - The external disturbance compensation method of U-shaped PCB coil binding clip - Google Patents
The external disturbance compensation method of U-shaped PCB coil binding clip Download PDFInfo
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- CN103383401B CN103383401B CN201310291701.0A CN201310291701A CN103383401B CN 103383401 B CN103383401 B CN 103383401B CN 201310291701 A CN201310291701 A CN 201310291701A CN 103383401 B CN103383401 B CN 103383401B
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Abstract
The invention discloses the external disturbance compensation method of U-shaped PCB coil binding clip, it is characterized in that, it comprises the following steps: (1) arranges a U-shaped PCB coil binding clip; (2) two compensating coils are set, and its coil direction of circling is identical; (3) by step (2) described compensating coil, be fixed on two end faces of the described U-shaped PCB coil binding clip of step (1); (4) when measuring induced voltage, by the closed loop coil that U-shaped PCB coil binding clip is formed, be divided into left and right two parts coil to connect with identical direction of circling, and two compensating coils are a coil of mutually connecting; (5) when outside exists interference source, by adjusting cross-sectional area or the coil turn of compensating coil, the induced voltage U making compensating coil produce
3', add any of the closed loop coil that U-shaped PCB coil binding clip is formed, the induced voltage U of generation
1' or U
2', equal the induced voltage U of another side
2' or U
1', realize compensating.
Description
Technical field
The present invention relates to electromagnetic induction voltage fields of measurement, being specifically related to the external disturbance compensation method of the U-shaped PCB coil binding clip for measuring induced voltage.
Background technology
Traditional mutual inductor coil is all generally iron core enameled wire being wound on rigidity, and the flexible pipe of non magnetic skeleton or flexibility is formed.Increase induced voltage to improve coefficient of mutual inductance, generally when coiling can on skeleton the enameled wire of coiling multilayer repeatedly back and forth, to increase the number of turn of coil.Such method can bring following problems:
The cross-sectional area of every layer line circle and line length disunity.The coil of innermost layer is directly wound on skeleton, and therefore the cross-sectional area of innermost layer coil is exactly the cross-sectional area of skeleton.And outer field coil is wound on the basis of inner coil, the thickness of inner coil therefore must be considered when calculating its cross-sectional area.So just cause much more every around one deck coil, its cross-sectional area is the thickness increasing one deck coil just more, and outer field coil, individual layer line length also can be longer.When assessing coil mutual inductance, cross-sectional area and the line length disunity of every layer line circle will bring error.
Because outer coil is directly wound on inner coil, the spacing of two-layer coil is very near, and cause there is larger stray capacitance between layers, the number of plies is more, and stray capacitance is also larger.These stray capacitances can reduce frequency response and the bandwidth of coil, cause the voltage signal that induces and tested current signal to occur deviation.Especially in the occasion measuring the Rapid Variable Design such as thunder-strike current and surge current signal, the impact of stray capacitance is more obvious.
U-shaped PCB coil binding clip, because its opening is comparatively large, therefore antijamming capability is poor, in measuring process, often there is error, so need to compensate its induced voltage.
Summary of the invention
The object of the invention is the external disturbance compensation method that U-shaped PCB coil binding clip is provided for the deficiencies in the prior art, by two end faces at U-shaped PCB coil binding clip, compensating coil is set respectively, and the direction of circling of compensating coil, identical with the direction of circling of the closed loop coil that U-shaped PCB coil binding clip is formed, the fundamental theorem of combined magnetic field, thus realize compensating measuring error.
The technical scheme that the present invention is adopted for achieving the above object is:
The external disturbance compensation method of U-shaped PCB coil binding clip, it comprises the following steps:
(1) a U-shaped PCB coil binding clip is set;
(2) two compensating coils are set, and its coil direction of circling is identical;
(3) by step (2) described compensating coil, be fixed on two end faces of the described U-shaped PCB coil binding clip of step (1);
(4) when measuring induced voltage, by the closed loop coil that U-shaped PCB coil binding clip is formed, be divided into left and right two parts coil to connect with identical direction of circling, and the induced voltage produced is respectively U
1and U
2, and two compensating coils are a coil of mutually connecting, and the induced voltage produced is U
3, then measuring voltage is U
1, U
2and U
3sum;
(5) when outside exists interference source, by adjusting cross-sectional area or the coil turn of compensating coil, the induced voltage U making compensating coil produce
3', add any of the closed loop coil that U-shaped PCB coil binding clip is formed, the induced voltage U of generation
1' or U
2', equal the induced voltage U of another side
2' or U
1', thus the interference voltage of outside is reduced to zero, realize compensating.
When U-shaped coil is in by external disturbance state, we, with being positioned over outside jaw, are used as external interference source at the electrified wire on the coil left side.Inversely added by the induced voltage of main field theorem known now the right and left coil.But because left half of coil is nearer to the distance of electrified wire than right half of coil, the magnetic field in left half of coil is stronger, the therefore coil-induced voltage U of left one side of something
1absolute value will be greater than the coil-induced voltage U of right one side of something
2absolute value, the induced voltage of both sides coil can not be offset completely, so have:
|U|＝|U
1+U
2|＝|U
1|-|U
2|
Inducing in obvious now coil | U| does not equal zero, and this induced voltage is exactly the interference voltage that U-shaped coil is introduced by outer lead interference.When normally measuring, if when the outside of binding clip has other electrified wire to disturb, interference voltage will be added on normal measuring voltage, thus causes error.
When the U-shaped coil increasing compensating coil is in by external disturbance state.From main field theorem, the induced voltage U of U-shaped coil
2with U
3in-phase stacking, and U
1then with U
2, U
3inversely add, so have:
|U|′＝|U
1′+U
2′+U
3′|＝||U
1′|-(|U
2′|+|U
3′|)|
In order to offset interference, must now | U ' | be decreased to 0.When there is no compensating coil, the U in above formula
3be 0, due to | U
1' | be forever greater than | U
2' |, interference voltage | U ' | may be 0 never.And after having had compensating coil, by adjusting the parameters such as the cross-sectional area of compensating coil or the number of turn, make the induced voltage U of compensating coil
3' add the induced voltage U of upper right half of coil
2' just in time can offset the induced voltage U of left half of coil
1, namely | U
1' |=| U
2' |+| U
3' |, just the interference voltage from binding clip outside can be reduced to 0, thus realize the object of compensation.
The described U-shaped PCB coil binding clip of step (1) comprises the basic binding clip pair of multiple PCB coil; By basic for described PCB coil binding clip to superimposed, and fixing; By the basic binding clip pair of PCB coil after superposition, by the mutual electric connection of the terminals of PCB coil, connect.
Described PCB binding clip is to comprising two PCB coil, and described PCB coil closed loop coil detoured along clockwise direction, a closed loop coil detoured in the counterclockwise direction; By superimposed for described two PCB coil, wherein, the PCB coil detoured along clockwise direction is above the PCB coil detoured in the counterclockwise direction; Wherein, the terminals of top PCB coil are terminals A
1with terminals B
1, the terminals of below PCB coil are terminals A
2with terminals B
2; The terminals B of two PCB coil after superposition is electrically connected.
The terminals A that the basic binding clip of PCB coil is right
2, the terminals A right with being positioned at the basic binding clip of the PCB coil of the basic binding clip of this PCB coil to bottom
1be electrically connected, by basic for each PCB coil binding clip to series connection, the terminals A that the basic binding clip of PCB coil of the superiors is right
1the terminals A right with the basic binding clip of undermost PCB coil
2, be the terminals of this PCB binding clip.
Described PCB coil comprises a single-layer double-side PCB; In described PCB, be provided with multiple via hole, and the double ordered arrangement in described via hole medial and lateral; At upper surface and the lower surface of described PCB, carry out etching wiring respectively; In described via hole, be filled with conductive material, two-sided PCB is electrically conducted by the heavy copper of plating by this via hole, and (via hole, by the heavy copper conducting of plating, makes upper and lower copper wire be electrically connected; On connected up surface, be coated with matcoveredn rosin, via hole top, inside and outside both sides or end, lead to terminals A and terminals B respectively at the upper surface of pcb board.
The upper surface of described PCB, from via hole top, inside and outside both sides, outside first via hole connects inner side the second via hole, or inner side first via hole connects outside the second via hole, is then linked in sequence successively; The lower surface of PCB, from via hole top, inside and outside both sides, inner side first via hole is connected with outside first via hole, is then linked in sequence successively.
Compensating coil described in step (2) is made up of in rigid backbone enameled wire, and each compensating coil comprises the coil that at least one is coiled into by enameled wire; When comprising two or more coil, each coil is connected in series with identical direction of circling.
In step (3), described compensating coil is laterally fixed on two end faces of described U-shaped PCB coil binding clip, and the direction of circling of compensating coil, identical with the direction of circling of the closed loop coil that U-shaped PCB coil binding clip is formed.
The invention has the beneficial effects as follows: by two end faces at U-shaped PCB coil binding clip, compensating coil is set respectively, and the direction of circling of compensating coil, identical with the direction of circling of the closed loop coil that U-shaped PCB coil binding clip is formed, the fundamental theorem of combined magnetic field, thus realize compensating measuring error.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention;
Fig. 2 is Fig. 1 circuit diagram;
Fig. 3 is U-shaped PCB coil tong head schematic diagram;
Fig. 4 is U-shaped PCB coil structural representation.
In figure: 1.U type PCB coil binding clip 2. compensating coil 3.PCB coil 4. terminals A
15. terminals B
16. terminals A
27. terminals B
28. the second via hole 16. enameled wire outside the first via hole 15. inside the second via hole 14. inside the first via hole 13. outside via hole 9. copper wire 10. terminals A 11. terminals B12.
Embodiment
Embodiment: see Fig. 1 to Fig. 4, the external disturbance compensation method of the U-shaped PCB coil binding clip that the present embodiment provides, it comprises the following steps:
(1) a U-shaped PCB coil binding clip 1 is set;
(2) two compensating coils 2 are set, and its coil direction of circling is identical;
(3) by described for step (2) compensating coil 2, be fixed on two end faces of the described U-shaped PCB coil binding clip 1 of step (1);
(4) when measuring induced voltage, by the closed loop coil that U-shaped PCB coil binding clip 1 is formed, be divided into left and right two parts coil to connect with identical direction of circling, and the induced voltage produced is respectively U
1and U
2, and two compensating coils are a coil of mutually connecting, and the induced voltage produced is U
3, then measuring voltage is U
1, U
2and U
3sum;
(5) when outside exists interference source, by adjusting cross-sectional area or the coil turn of compensating coil, the induced voltage U making compensating coil produce
3', add any of the closed loop coil that U-shaped PCB coil binding clip 1 is formed, the induced voltage U of generation
1' or U
2', equal the induced voltage U of another side
2' or U
1', thus the interference voltage of outside is reduced to zero, realize compensating.
When U-shaped coil is in by external disturbance state, with being positioned over outside jaw, be used as external interference source at the electrified wire on the coil left side.Inversely added by the induced voltage of main field theorem known now the right and left coil.But because left half of coil is nearer to the distance of electrified wire than right half of coil, the magnetic field in left half of coil is stronger, the therefore coil-induced voltage U of left one side of something
1absolute value will be greater than the coil-induced voltage U of right one side of something
2absolute value, the induced voltage of both sides coil can not be offset completely, so have:
|U|＝|U
1+U
2|＝|U
1|-|U
2|
Inducing in obvious now coil | U| does not equal zero, and this induced voltage is exactly the interference voltage that U-shaped coil is introduced by outer lead interference.When normally measuring, if when the outside of binding clip has other electrified wire to disturb, interference voltage will be added on normal measuring voltage, thus causes error.
When the U-shaped coil increasing compensating coil is in by external disturbance state.From main field theorem, the induced voltage U of U-shaped coil
2with U
3in-phase stacking, and U
1then with U
2, U
3inversely add, so have:
|U|′＝|U
1′+U
2′+U
3′|＝||U
1′|-(|U
2′|+|U
3′|)|
In order to offset interference, must now | U ' | be decreased to 0.When there is no compensating coil, the U in above formula
3be 0, due to | U
1' | be forever greater than | U
2' |, interference voltage | U ' | may be 0 never.And after having had compensating coil, by adjusting the parameters such as the cross-sectional area of compensating coil or the number of turn, make the induced voltage U of compensating coil
3' add the induced voltage U of upper right half of coil
2' just in time can offset the induced voltage U of left half of coil
1, namely | U
1' |=| U
2' |+| U
3' |, just the interference voltage from binding clip outside can be reduced to 0, thus realize the object of compensation.
The described U-shaped PCB coil binding clip 1 of step (1) comprises the basic binding clip pair of multiple PCB coil; By basic for described PCB coil binding clip to superimposed, and fixing; By the basic binding clip pair of PCB coil after superposition, by the mutual electric connection of the terminals of PCB coil, connect.
The basic binding clip of described PCB coil is to comprising two PCB coil 3, and described PCB coil 3 one closed loop coil detoured along clockwise direction, a closed loop coil detoured in the counterclockwise direction; By superimposed for described two PCB coil 3, wherein, the PCB coil 3 detoured along clockwise direction is above the PCB coil 3 detoured in the counterclockwise direction; Wherein, the terminals of top PCB coil are terminals A
14 and terminals B
15, the terminals of below PCB coil 3 are terminals A
26 and terminals B
27; The terminals B of two PCB coil 1 after superposition is electrically connected.
The terminals A that the basic binding clip of PCB coil is right
26, the terminals A right with being positioned at the basic binding clip of the PCB coil of the basic binding clip of this PCB coil to bottom
14 are electrically connected, by basic for each PCB coil binding clip to series connection, and the terminals A that the basic binding clip of PCB coil of the superiors is right
1the 4 terminals As right with the basic binding clip of undermost PCB coil
26, be the terminals of this PCB binding clip.
Described PCB coil comprises a single-layer double-side PCB; In described PCB, be provided with multiple via hole 8, and the double ordered arrangement in described via hole 8 medial and lateral; At upper surface and the lower surface of described PCB, carry out etching wiring respectively; In described via hole 8, be filled with conductive material, two-sided PCB is electrically conducted by the heavy copper of plating by this via hole, and upper and lower copper wire 9 is electrically connected; On connected up surface, be coated with matcoveredn rosin, via hole 8 top, inside and outside both sides or end, lead to terminals A10 and terminals B11 respectively at the upper surface of pcb board.
The upper surface of described PCB, from via hole 8 top, inside and outside both sides, outside first via hole 12 connects inner side the second via hole 13, or inner side first via hole 14 connects outside the second via hole 15, is then linked in sequence successively; The lower surface of PCB, from via hole top, inside and outside both sides, inner side first via hole 14 is connected with outside first via hole 12, is then linked in sequence successively.
Compensating coil described in step (2) is made up of in rigid backbone enameled wire 16, and each compensating coil 2 comprises the coil that at least one is coiled into by enameled wire 16; When comprising two or more coil, each coil is connected in series with identical direction of circling.
In step (3), described compensating coil 2 is laterally fixed on two end faces of described U-shaped PCB coil binding clip 1, and the direction of circling of compensating coil 2, identical with the direction of circling of the closed loop coil that U-shaped PCB coil binding clip 1 is formed.
But the foregoing is only better possible embodiments of the present invention, and be not used to limit to the scope of the claims of the present invention, therefore the equivalent structure change that all utilizations instructions of the present invention and accompanying drawing content are done, be all included in protection scope of the present invention.
Claims (8)
- The external disturbance compensation method of 1.U type PCB coil binding clip, it is characterized in that, it comprises the following steps:(1) a U-shaped PCB coil binding clip is set;(2) two compensating coils are set, and its coil direction of circling is identical;(3) by step (2) described compensating coil, be fixed on two end faces of the described U-shaped PCB coil binding clip of step (1);(4) when measuring induced voltage, by the closed loop coil that U-shaped PCB coil binding clip is formed, be divided into left and right two parts coil to connect with identical direction of circling, and the induced voltage produced is respectively U 1and U 2, and two compensating coils are a coil of mutually connecting, and the induced voltage produced is U 3, then measuring voltage is U 1, U 2and U 3sum;(5) when outside exists interference source, by adjusting cross-sectional area or the coil turn of compensating coil, the induced voltage U making compensating coil produce 3', add any of the closed loop coil that U-shaped PCB coil binding clip is formed, the induced voltage U of generation 1' or U 2', equal the induced voltage U of another side 2' or U 1', thus the interference voltage of outside is reduced to zero, realize compensating.
- 2. the external disturbance compensation method of U-shaped PCB coil binding clip according to claim 1, is characterized in that, the described U-shaped PCB coil binding clip of step (1) comprises the basic binding clip pair of multiple PCB coil; By basic for described PCB coil binding clip to superimposed, and fixing; By the basic binding clip pair of PCB coil after superposition, by the mutual electric connection of the terminals of PCB coil, connect.
- 3. the external disturbance compensation method of U-shaped PCB coil binding clip according to claim 2, it is characterized in that, described PCB binding clip is to comprising two PCB coil, and described PCB coil closed loop coil detoured along clockwise direction, a closed loop coil detoured in the counterclockwise direction; By superimposed for described two PCB coil, wherein, the PCB coil detoured along clockwise direction is above the PCB coil detoured in the counterclockwise direction; Wherein, the terminals of top PCB coil are terminals A 1with terminals B 1, the terminals of below PCB coil are terminals A 2with terminals B 2; By the terminals B of two PCB coil after superposition 1and B 2be electrically connected.
- 4. the external disturbance compensation method of U-shaped PCB coil binding clip according to claim 3, is characterized in that, the terminals A that the basic binding clip of PCB coil is right 2, the terminals A right with being positioned at the basic binding clip of the PCB coil of the basic binding clip of this PCB coil to bottom 1be electrically connected, by basic for each PCB coil binding clip to series connection, the terminals A that the basic binding clip of PCB coil of the superiors is right 1the terminals A right with the basic binding clip of undermost PCB coil 2, be the terminals of this PCB binding clip.
- 5. the external disturbance compensation method of U-shaped PCB coil binding clip according to claim 3, is characterized in that, described PCB coil comprises a single-layer double-side PCB; In described PCB, be provided with multiple via hole, and the double ordered arrangement in described via hole medial and lateral; At upper surface and the lower surface of described PCB, carry out etching wiring respectively; In described via hole, be filled with conductive material, two-sided PCB is electrically conducted by the heavy copper of plating by this via hole, and upper and lower copper wire is electrically connected; On connected up surface, be coated with matcoveredn rosin, via hole top, inside and outside both sides or end, lead to terminals A and terminals B respectively at the upper surface of pcb board.
- 6. the external disturbance compensation method of U-shaped PCB coil binding clip according to claim 5, it is characterized in that, the upper surface of described PCB, from via hole top, inside and outside both sides, outside first via hole connects inner side the second via hole, or inner side first via hole connects outside the second via hole, is then linked in sequence successively; The lower surface of PCB, from via hole top, inside and outside both sides, inner side first via hole is connected with outside first via hole, is then linked in sequence successively.
- 7. the external disturbance compensation method of U-shaped PCB coil binding clip according to claim 1, it is characterized in that, compensating coil described in step (2) is made up of in rigid backbone enameled wire, and each compensating coil comprises the coil that at least one is coiled into by enameled wire; When comprising two or more coil, each coil is connected in series with identical direction of circling.
- 8. the external disturbance compensation method of U-shaped PCB coil binding clip according to claim 1, it is characterized in that, in step (3), described compensating coil is laterally fixed on two end faces of described U-shaped PCB coil binding clip, and the direction of circling of compensating coil, identical with the direction of circling of the closed loop coil that U-shaped PCB coil binding clip is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310291701.0A CN103383401B (en) | 2013-07-11 | 2013-07-11 | The external disturbance compensation method of U-shaped PCB coil binding clip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310291701.0A CN103383401B (en) | 2013-07-11 | 2013-07-11 | The external disturbance compensation method of U-shaped PCB coil binding clip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103383401A CN103383401A (en) | 2013-11-06 |
| CN103383401B true CN103383401B (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310291701.0A Active CN103383401B (en) | 2013-07-11 | 2013-07-11 | The external disturbance compensation method of U-shaped PCB coil binding clip |
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| CN (1) | CN103383401B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7034482B2 (en) * | 2018-06-08 | 2022-03-14 | 共立電気計器株式会社 | Clamp sensor and clamp meter |
| CN113436856B (en) * | 2021-06-11 | 2022-10-11 | 优利德科技(中国)股份有限公司 | Hollow coil sensing complementary device, pincerlike multimeter and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5049844A (en) * | 1990-05-16 | 1991-09-17 | Beta Mfg. Co. | Enclosed electromagnetic relay |
| CN2136473Y (en) * | 1992-07-30 | 1993-06-16 | 蔡冰 | Clamp-on tester |
| CN202134392U (en) * | 2011-06-10 | 2012-02-01 | 四川泰克电器有限公司 | Current transformer |
| CN202871546U (en) * | 2012-07-26 | 2013-04-10 | 北京中凯科电电力技术有限公司 | Current transformer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH692161A5 (en) * | 1997-07-04 | 2002-02-28 | Lem Liaisons Electron Mec | current sensor. |
-
2013
- 2013-07-11 CN CN201310291701.0A patent/CN103383401B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5049844A (en) * | 1990-05-16 | 1991-09-17 | Beta Mfg. Co. | Enclosed electromagnetic relay |
| CN2136473Y (en) * | 1992-07-30 | 1993-06-16 | 蔡冰 | Clamp-on tester |
| CN202134392U (en) * | 2011-06-10 | 2012-02-01 | 四川泰克电器有限公司 | Current transformer |
| CN202871546U (en) * | 2012-07-26 | 2013-04-10 | 北京中凯科电电力技术有限公司 | Current transformer |
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| Publication number | Publication date |
|---|---|
| CN103383401A (en) | 2013-11-06 |
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Address after: 523808 No. 6 industrial North Road, Songshan Lake high tech Industrial Development Zone, Dongguan, Guangdong Patentee after: Uno Technology (China) Limited by Share Ltd Address before: 523808 No. 6 industrial North Road, Songshan Lake high tech Industrial Development Zone, Dongguan, Guangdong Patentee before: Uni-Trend Technology (China) Co., Ltd. |
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