CN108226631A - A kind of single-phase measurement module of anti-magnetic interference - Google Patents
A kind of single-phase measurement module of anti-magnetic interference Download PDFInfo
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- CN108226631A CN108226631A CN201711467210.1A CN201711467210A CN108226631A CN 108226631 A CN108226631 A CN 108226631A CN 201711467210 A CN201711467210 A CN 201711467210A CN 108226631 A CN108226631 A CN 108226631A
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- twisted
- sampling
- pair feeder
- measurement module
- phase measurement
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- 238000005259 measurement Methods 0.000 title claims abstract description 35
- 230000005291 magnetic effect Effects 0.000 claims abstract description 63
- 238000005070 sampling Methods 0.000 claims abstract description 43
- HPDFFVBPXCTEDN-UHFFFAOYSA-N copper manganese Chemical compound [Mn].[Cu] HPDFFVBPXCTEDN-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000013461 design Methods 0.000 description 7
- 230000005672 electromagnetic field Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005292 diamagnetic effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- CEOCDNVZRAIOQZ-UHFFFAOYSA-N pentachlorobenzene Chemical compound ClC1=CC(Cl)=C(Cl)C(Cl)=C1Cl CEOCDNVZRAIOQZ-UHFFFAOYSA-N 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The invention discloses a kind of single-phase measurement modules of anti-magnetic interference, including pcb board and computation chip, computation chip is arranged on pcb board, single-phase measurement module further includes I-shaped manganese copper diverter, I-shaped manganese copper diverter is connected by sampling the tie point of twisted-pair feeder and pcb board, it samples link position of the twisted-pair feeder respectively from the positive and negative of I-shaped manganese copper diverter to draw and keep the both threads of sampling twisted-pair feeder parallel, symmetrical, the tie point of pcb board and the input terminal of computation chip connect；The magnetic field for ensureing to generate between manganese copper diverter and sampling twisted-pair feeder is cancelled out each other, and is further ensured that single-phase measurement module by magnetic interference, does not solve the problems, such as that single-phase electronic energy meter is influenced by 0.5mT power frequency magnetic field.
Description
Technical field
The present invention relates to the metering module field of electric energy meter, especially a kind of single-phase measurement module of anti-magnetic interference.
Background technology
Power frequency electromagnetic field (EMF)：Be some be centered around around any electrical equipment people naked eyes institute it cannot be seen that
" power " line, power transmission line, electric wire and electrical equipment can all generate power frequency electromagnetic field (EMF).It is also a lot of other at one's side in people
Electric appliance can generate power frequency electromagnetic field (EMF), such as television set, hair dryer, refrigerator, computer.
What State Grid Corporation of China promulgated《Q/GDW 1364-2013 single-phase intelligent electric energy meter technical specifications》Middle 4.5.11 shadows
Ringing amount, " 0.5mT power frequency magnetic field is non-loaded, and electric energy meter is in running order, and current circuit no current places it in 0.5mT works
In frequency magnetic interference, the test output of electric energy meter should not generate more than one pulse." test method：5.1.11 influence amount is tested
" 0.5mT power frequency magnetic field is non-loaded, and electric energy meter voltage circuit passes to 115%Un, current loop no current, by 0.5mT power frequency magnetic field
Electric energy meter most sensitive place affected by magnetic fields is applied to, within 20 times of theoretical starting time, electric energy meter should not generate more than one
Pulse exports.”
Existing electric energy meter avoids the designing scheme that 0.5mT power frequency magnetic field influences, with reference in Chinese patent literature CN
203025249 disclose a kind of single-phase measurement module for single-phase electric energy meter, including pcb board, the difference being arranged on pcb board
The track being connected with copper-manganese relay input terminal and its output terminal is put with the relay input terminal B1 track B1 to connect
In on another layer of pcb board, the track by via with and the track B2 that connect of the relay output end B2 be connected, with
The track A1A2 that the relay input terminal A1 and its output terminals A 2 the connect and track B1B2 is layered phase at via
It hands over.The metering module greatly reduces influence of the pcb board wiring to relay, effectively improves electric energy meter and alternating magnetic field is resisted
Interference performance.But in the program there are still it is following the defects of：The design has only done equivalent process on PCB, reduces alternation
The interference that magnetic field generates, but the connecting line of copper-manganese and PCB, copper-manganese cross-section parts do not do the processing of anti-alternating magnetic field, still
So there are the interference that alternating magnetic field generates.
Invention content
In order to solve the above-mentioned technical problem, the object of the present invention is to provide a kind of single-phase measurement module of anti-magnetic interference,
Ensure single-phase measurement module not by magnetic interference.
The technical solution adopted in the present invention is：A kind of single-phase measurement module of anti-magnetic interference, including pcb board and metering
Chip, the computation chip are arranged on pcb board, and the single-phase measurement module further includes I-shaped manganese copper diverter, the work
Font manganese copper diverter is connected by sampling the tie point of twisted-pair feeder and pcb board, and the sampling twisted-pair feeder is respectively from I-shaped manganese
The link position of the positive and negative of copper current divider draws and keeps the both threads of sampling twisted-pair feeder parallel, symmetrical, the pcb board
The input terminal of tie point and computation chip connects.
Further, the single-phase measurement module further includes the locking dress of the root for being arranged on sampling twisted-pair feeder and tail portion
It puts, the locking device is used for fixed sample twisted-pair feeder so that sampling twisted-pair feeder closing lay.
Further, the locking device is heat-shrinkable T bush.
Further, the sampling multiple twin cabling number of turns is even number.
Further, the single-phase measurement module further includes current signal modulation circuit, the sampling twisted-pair feeder and pcb board
A tie point connected by being arranged on an input terminal of track and the current signal modulation circuit of the reverse side of the pcb board
Connect, another tie point of the sampling twisted-pair feeder and pcb board by be arranged on the positive track of the pcb board with it is described
The track layering of reverse side is connect after intersecting by via with an input terminal of current signal modulation circuit, the current signal
Two output terminals of modulation circuit are connect respectively with two input terminals of computation chip, and two track layerings intersect at a friendship
It puts to form the first magnetic field ring and the second magnetic field Huan Liangge magnetic fields ring between two tie points and the input terminal of computation chip, and
The electromotive force direction generated in adjacent described two magnetic field rings under alternating magnetic field environment is opposite.
Further, the effective area of first magnetic field ring and the second magnetic field ring is equal.
Further, the current signal modulation circuit is the first current-limiting resistance and the second current-limiting resistance, and described first limits
One end of leakage resistance and the input terminal that one end of the second current-limiting resistance is current signal modulation circuit, first current-limiting resistance
The other end of the other end and the second current-limiting resistance is the output terminal of current signal modulation circuit.
The beneficial effects of the invention are as follows：
A kind of single-phase measurement module of anti-magnetic interference of the present invention, including pcb board and computation chip, computation chip is arranged on
On pcb board, single-phase measurement module further includes I-shaped manganese copper diverter, I-shaped manganese copper diverter by sample twisted-pair feeder with
The tie point connection of pcb board, link position of the sampling twisted-pair feeder respectively from the positive and negative of I-shaped manganese copper diverter are drawn and are protected
The both threads for holding sampling twisted-pair feeder are parallel, symmetrical, and the tie point of pcb board and the input terminal of computation chip connect；Ensure in copper-manganese
The magnetic field that generates is cancelled out each other between current divider and sampling twisted-pair feeder, is further ensured that single-phase measurement module not by magnetic interference,
Solve the problems, such as that single-phase electronic energy meter is influenced by 0.5mT power frequency magnetic field.
Description of the drawings
The specific embodiment of the present invention is described further below in conjunction with the accompanying drawings：
Fig. 1 is an a kind of specific embodiment schematic diagram of the single-phase measurement module of anti-magnetic interference of the present invention；
Fig. 2 is a kind of I-shaped manganese copper diverter of the single-phase measurement module of anti-magnetic interference of the present invention and sampling twisted-pair feeder
A specific embodiment stereoscopic schematic diagram；
Fig. 3 is a kind of I-shaped manganese copper diverter of the single-phase measurement module of anti-magnetic interference of the present invention and sampling twisted-pair feeder
A specific embodiment stereoscopic schematic diagram.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the application can phase
Mutually combination.
A kind of single-phase measurement module of anti-magnetic interference is a kind of anti-magnetic interference of the present invention with reference to figure 1 and Fig. 2, Fig. 1
One specific embodiment schematic diagram of single-phase measurement module；Fig. 2 is a kind of work of the single-phase measurement module of anti-magnetic interference of the present invention
One specific embodiment stereoscopic schematic diagram of font manganese copper diverter and sampling twisted-pair feeder；Including pcb board and computation chip, metering core
Piece is arranged on pcb board, and single-phase measurement module further includes I-shaped manganese copper diverter 1, and I-shaped manganese copper diverter 1 passes through sampling
Twisted-pair feeder 2 (i.e. signal wire I+1, signal wire I-1) is connect with the tie point of pcb board, and sampling twisted-pair feeder 2 is respectively from I-shaped manganese
The link position of the positive and negative of copper current divider 1 draws and keeps the both threads of sampling twisted-pair feeder 2 parallel, symmetrical, the company of pcb board
The input terminal of contact and computation chip connects.Specifically, the respective line nose 3 of both threads of sampling twisted-pair feeder 2 and I-shaped copper-manganese
The center weld of the positive and negative of current divider 1, due to the symmetric design of solder joint, current sampling signal line (sampling twisted-pair feeder 2) is right
The outlet method of title ensures that current sampling signal line is parallel, symmetrical to the maximum extent；Then the external magnetic field that generates can cancel out each other
(i.e. the magnetic field that generates is cancelled out each other between manganese copper diverter and sampling twisted-pair feeder), can be further ensured that single-phase measurement module not by
Magnetic interference solves the problems, such as that single-phase electronic energy meter is influenced by 0.5mT power frequency magnetic field.
As being further improved for technical solution, referring to figs. 2 and 3, single-phase measurement module, which further includes, is arranged on sampling pair
The root of twisted wire and the locking device of tail portion, locking device is used for fixed sample twisted-pair feeder so that sampling twisted-pair feeder closing lay.
In the present embodiment, locking device is heat-shrinkable T bush 4, and it is fixed to be fixed in the root of sampling twisted-pair feeder 2 and tail portion heat-shrinkable T bush 4
Type ensures 2 closing lay of sampling twisted-pair feeder together, samples tight between two lines of twisted-pair feeder 2, then external to generate
Motional electromotive force can not generate abnormal current superposition phenomenon, so as to which the entire signal for sampling twisted-pair feeder 2 be effectively ensured from I-shaped manganese
It is not influenced before copper current divider 1 to pcb board by magnetic interference.
As being further improved for technical solution, the sampling multiple twin cabling number of turns is even number.Sample the even number of twisted-pair feeder
Twisted number of turns design, ensureing the magnetic fields of different directions can cancel out each other when twisted-pair feeder is sampled, and magnetic field is avoided to generate.
As being further improved for technical solution, single-phase measurement module further includes current signal modulation circuit, samples multiple twin
One tie point of line and pcb board is defeated by one that is arranged on track and the current signal modulation circuit of the reverse side of pcb board
Enter end connection, sample another tie point of twisted-pair feeder and pcb board by being arranged on the positive track and reverse side of pcb board
It is connect after track layering is intersecting by via with an input terminal of current signal modulation circuit, current signal modulation circuit
Two output terminals are connect respectively with two input terminals of computation chip, and two track layerings intersect at an intersection point at two
The first magnetic field ring and the second magnetic field Huan Liangge magnetic fields ring are formed between tie point and the input terminal of computation chip, and in alternating magnetic field
The electromotive force direction generated in two adjacent magnetic field rings under environment is opposite.The effective area of first magnetic field ring and the second magnetic field ring
Equal, then the electromotive force that two magnetic field rings generate can cancel out each other, ensure tie point in PCB between computation chip without magnetic
Field generates, and in the useful signal input computation chip of current sample, prevents shunt running.Further, with reference to figure 1, current signal tune
Circuit processed is the first current-limiting resistance R1 and the second current-limiting resistance R2, one end of the first current-limiting resistance R1 and the second current-limiting resistance R2's
One end is the other end of the input terminal of current signal modulation circuit, the other end of the first current-limiting resistance R1 and the second current-limiting resistance R2
Output terminal for current signal modulation circuit.After sampling twisted-pair feeder 2 is welded on pcb board, signal wire I+1, signal wire I-1 two
Line is perforated on pcb board carries out cross wiring after cabling, two tracks layerings intersect at an intersection point by tie point in terms of
The first magnetic field ring S1 and the second magnetic field ring S2 (computation chip, the first current-limiting resistance R1, second are formed between the input terminal of amount chip
Current-limiting resistance R2, signal wire I+1 are in the bottom of pcb board), dotted line represents the bottom in pcb board, and solid line is represented on the top of pcb board
Layer, specifically, after sampling twisted-pair feeder 2 is welded on pcb board, I-1 signal wires are punched after the top layer cabling of pcb board to arrive bottom,
Using the first current-limiting resistance R1 parallel wirings access computation chip, I+1 signal wires PCB bottom wiring when with I-1 signals
Line intersects an area S1, then in bottom and top layer I-1 signal wires cross wire to computation chip pin, and I+1 signal wires exist
Intersect an area S2 at I-1 signal wire vias between computation chip.The first adjacent magnetic field under alternating magnetic field environment
Ring S1 and the interior electromotive force direction generated of second two magnetic field rings of magnetic field ring S2 are on the contrary, the first magnetic field ring S1 and the second magnetic field ring S2
Effective area it is equal, magnetic field is offset being reversed mutual body on the contrary, ensure electric energy meter on pcb board current signal not by shadow
It rings, then electric energy meter also can be measured precisely in magnetic interference environment.
The present invention passes through current sampling signal in symmetrical, the parallel outlet design and pcb board to I-shaped manganese copper diverter
The layout of line eliminates influence of the 0.5mT power frequency magnetic field to metering module, ensures the signal wire in six faces of pcb board not by magnetic
The influence of field interference；I-shaped manganese copper diverter design and the design of electric energy meter current sampled signal pcb board configuration are in physics
Level is independent, is combined together indeed through current sampling signal, realizes the function of respective anti-magnetic interference.
The mode of component optimization and PCB layout optimization is carried out during electric energy meter finished article design, realizes small change, at low cost, it is complete
Full up foot electric energy meter can solve 0.5mT power frequency magnetic field in bulk article to be influenced, and improves the diamagnetic field interference performance of electric energy meter field,
Ensure that electronic electric energy meter precisely measures.So as to fulfill electronic electric energy meter " 0.5mT power frequency magnetic field is non-loaded, electrical energy meter electricity
Crimping road passes to 115%Un, and it is affected by magnetic fields most sensitive to be applied to electric energy meter by current loop no current for 0.5mT power frequency magnetic field
Place, within 20 times of theoretical starting time, electric energy meter should not generate the pulse output of more than one." fully meet national grid public affairs
What department promulgated《Q/GDW 1364-2013 single-phase intelligent electric energy meter technical specifications》The requirement of middle 4.5.11 influence amounts.
It is that the preferable of the present invention is implemented to be illustrated, but the invention is not limited to the implementation above
Example, those skilled in the art can also make various equivalent variations under the premise of without prejudice to spirit of the invention or replace
It changes, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (7)
1. a kind of single-phase measurement module of anti-magnetic interference, including pcb board and computation chip, the computation chip is arranged on PCB
On plate, which is characterized in that the single-phase measurement module further includes I-shaped manganese copper diverter, and the I-shaped manganese copper diverter leads to
The tie point of over-sampling twisted-pair feeder and pcb board connects, and the sampling twisted-pair feeder is respectively from the positive and negative of I-shaped manganese copper diverter
Link position draw and keep the both threads of sampling twisted-pair feeder parallel, symmetrical, the tie point of the pcb board and computation chip
Input terminal connects.
2. the single-phase measurement module of anti-magnetic interference according to claim 1, which is characterized in that the single-phase measurement module
Further include be arranged on sampling twisted-pair feeder root and tail portion locking device, the locking device for fixed sample twisted-pair feeder with
Make sampling twisted-pair feeder closing lay.
3. the single-phase measurement module of anti-magnetic interference according to claim 2, which is characterized in that the locking device is heat
Heat-Shrinkable Tubings.
4. the single-phase measurement module of anti-magnetic interference according to claim 1, which is characterized in that the sampling twisted-pair feeder
The twisted number of turns is even number.
5. the single-phase measurement module of anti-magnetic interference according to any one of claims 1 to 4, which is characterized in that the list
Phase metering module further includes current signal modulation circuit, and a tie point for sampling twisted-pair feeder and pcb board is by being arranged on
The track of the reverse side of the pcb board is connect with an input terminal of current signal modulation circuit, the sampling twisted-pair feeder and PCB
After another tie point of plate is intersected with the layering of the track of the reverse side by being arranged on the positive track of the pcb board
It is connect by via with an input terminal of current signal modulation circuit, two output terminals point of the current signal modulation circuit
It is not connect with two input terminals of computation chip, two track layerings intersect at an intersection point in two tie points and metering
The first magnetic field ring and the second magnetic field Huan Liangge magnetic fields ring are formed between the input terminal of chip, and adjacent under alternating magnetic field environment
The electromotive force direction generated in described two magnetic field rings is opposite.
6. the single-phase measurement module of anti-magnetic interference according to claim 5, which is characterized in that first magnetic field ring and
The effective area of second magnetic field ring is equal.
7. the single-phase measurement module of anti-magnetic interference according to claim 5, which is characterized in that the current signal modulation
Circuit is the first current-limiting resistance and the second current-limiting resistance, and one end of first current-limiting resistance and one end of the second current-limiting resistance are
The input terminal of current signal modulation circuit, the other end of first current-limiting resistance and the other end of the second current-limiting resistance are electric current
The output terminal of signal modulation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711467210.1A CN108226631B (en) | 2017-12-27 | 2017-12-27 | Single-phase metering module for resisting magnetic field interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711467210.1A CN108226631B (en) | 2017-12-27 | 2017-12-27 | Single-phase metering module for resisting magnetic field interference |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108226631A true CN108226631A (en) | 2018-06-29 |
| CN108226631B CN108226631B (en) | 2024-02-23 |
Family
ID=62646033
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711467210.1A Active CN108226631B (en) | 2017-12-27 | 2017-12-27 | Single-phase metering module for resisting magnetic field interference |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109324307A (en) * | 2018-09-02 | 2019-02-12 | 青岛鼎信通讯科技有限公司 | A kind of electric energy meter Hz noise counteracting method based on PCB |
| CN109521255A (en) * | 2018-12-27 | 2019-03-26 | 苏州汇川技术有限公司 | Circuit board and power electronic equipment |
| CN110320404A (en) * | 2019-08-01 | 2019-10-11 | 桐乡市伟达电子有限公司 | A kind of analog-to-digital conversion sensor |
| CN110836988A (en) * | 2019-11-25 | 2020-02-25 | 新沂市鑫洋电子有限公司 | Manganese-copper current divider capable of resisting work magnetic interference and application thereof |
| CN111190036A (en) * | 2020-02-28 | 2020-05-22 | 桐乡市伟达电子有限公司 | Shunt lead structure, electric power meter with shunt lead structure and manufacturing method of shunt lead structure |
| CN113740579A (en) * | 2021-09-29 | 2021-12-03 | 德力西集团仪器仪表有限公司 | Electric energy meter, circuit board wiring structure and wiring method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109324307A (en) * | 2018-09-02 | 2019-02-12 | 青岛鼎信通讯科技有限公司 | A kind of electric energy meter Hz noise counteracting method based on PCB |
| CN109324307B (en) * | 2018-09-02 | 2022-02-08 | 青岛鼎信通讯科技有限公司 | Electric energy meter power frequency interference cancellation method based on PCB |
| CN109521255A (en) * | 2018-12-27 | 2019-03-26 | 苏州汇川技术有限公司 | Circuit board and power electronic equipment |
| CN109521255B (en) * | 2018-12-27 | 2024-04-30 | 苏州汇川技术有限公司 | Circuit board and power electronic equipment |
| CN110320404A (en) * | 2019-08-01 | 2019-10-11 | 桐乡市伟达电子有限公司 | A kind of analog-to-digital conversion sensor |
| CN110836988A (en) * | 2019-11-25 | 2020-02-25 | 新沂市鑫洋电子有限公司 | Manganese-copper current divider capable of resisting work magnetic interference and application thereof |
| CN111190036A (en) * | 2020-02-28 | 2020-05-22 | 桐乡市伟达电子有限公司 | Shunt lead structure, electric power meter with shunt lead structure and manufacturing method of shunt lead structure |
| CN113740579A (en) * | 2021-09-29 | 2021-12-03 | 德力西集团仪器仪表有限公司 | Electric energy meter, circuit board wiring structure and wiring method |
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