CN207894995U - 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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- CN207894995U CN207894995U CN201721857343.5U CN201721857343U CN207894995U CN 207894995 U CN207894995 U CN 207894995U CN 201721857343 U CN201721857343 U CN 201721857343U CN 207894995 U CN207894995 U CN 207894995U
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- 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 26
- 238000013461 design Methods 0.000 description 8
- 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 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 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
- 230000007547 defect Effects 0.000 description 1
- 230000005292 diamagnetic effect 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
- 230000035945 sensitivity Effects 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
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- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The utility model 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, sampling twisted-pair feeder draws from the link position of the positive and negative of I-shaped manganese copper diverter and keeps the both threads of sampling twisted-pair feeder parallel, symmetrical respectively, and the tie point of pcb board and the input terminal of computation chip connect；Ensure that the magnetic field generated between manganese copper diverter and sampling twisted-pair feeder is cancelled out each other, is 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 0.5m T power frequency magnetic field.
Description
Technical field
The utility model is related to the metering module field of electric energy meter, especially a kind of single-phase measurement mould of anti-magnetic interference
Block.
Background technology
Power frequency electromagnetic field (EMF)：Be some be centered around around any type 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 will produce power frequency electromagnetic field (EMF), such as television set, hair dryer, refrigerator, computer.
What State Grid Corporation of China promulgated《Q/GDW1364-2013 single-phase intelligent electric energy meter technical specifications》Middle 4.5.11 influences
" 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 power frequencies for amount
In 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
It is applied to electric energy meter most sensitive place affected by magnetic fields, within 20 times of theoretical starting time, electric energy meter should not generate more than one
Pulse exports.”
Existing electric energy meter avoids the design scheme that 0.5mT power frequency magnetic field influences, with reference in Chinese patent literature
CN203025249 discloses a kind of single-phase measurement module for single-phase electric energy meter, including pcb board, point that is arranged on pcb board
The track not being connected with copper-manganese relay input terminal and its output end, the track B1 to connect with the relay input terminal B1
Be placed 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,
The track A1A2 to connect with the relay input terminal A1 and its output terminals A 2 the and track B1B2 is layered at via
Intersection.The metering module greatly reduces influence of the pcb board wiring to relay, effectively improves electric energy meter to alternating magnetic field
Anti-interference ability.But there are still defects below in the program：The design has only done equivalent process on PCB, reduces friendship
The interference that varying 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,
There are still the interference that alternating magnetic field generates.
Utility model content
In order to solve the above-mentioned technical problem, the purpose of this utility model is to provide a kind of single-phase measurement mould of anti-magnetic interference
Block ensures single-phase measurement module not by magnetic interference.
Technical solution used by the utility model is：A kind of single-phase measurement module of anti-magnetic interference, including pcb board and
Computation chip, the computation chip are arranged on pcb board, and the single-phase measurement module further includes I-shaped manganese copper diverter, institute
It states I-shaped manganese copper diverter and is connected by sampling the tie point of twisted-pair feeder and pcb board, the sampling twisted-pair feeder is respectively from I-shaped
The link position of the positive and negative of type manganese copper diverter draws and keeps the both threads of sampling twisted-pair feeder parallel, symmetrical, the PCB
The tie point of plate and the input terminal of computation chip connect.
Further, the single-phase measurement module further includes the locking dress being arranged in the root of sampling twisted-pair feeder and tail portion
It sets, 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 the way that an input terminal of the track in the reverse side of the pcb board and current signal modulation circuit is arranged
Connect, another tie point of the sampling twisted-pair feeder and pcb board by be arranged the positive track in the pcb board with it is described
It is connect with an input terminal of current signal modulation circuit by via after the track layering intersection of reverse side, the current signal
Two output ends of modulation circuit are connect with two input terminals of computation chip respectively, and two track layerings intersect at a friendship
It puts to form the first magnetic field ring and the second magnetic field magnetic fields Huan Liangge 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, first limit
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 end of current signal modulation circuit.
The utility model has the beneficial effects that：
A kind of single-phase measurement module of anti-magnetic interference of the utility model, including pcb board and computation chip, computation chip are set
It sets on pcb board, single-phase measurement module further includes I-shaped manganese copper diverter, and I-shaped manganese copper diverter is by sampling twisted-pair feeder
It is connect with the tie point of pcb board, sampling twisted-pair feeder is drawn simultaneously from the link position of the positive and negative of I-shaped manganese copper diverter respectively
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；Ensure in manganese
The magnetic field generated between copper current divider and sampling twisted-pair feeder is cancelled out each other, and is further ensured that single-phase measurement module is not dry by magnetic field
It disturbs, solves the problems, such as that single-phase electronic energy meter is influenced by 0.5mT power frequency magnetic field.
Description of the drawings
Specific embodiment of the present utility model 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 utility model；
Fig. 2 is that a kind of I-shaped manganese copper diverter of the single-phase measurement module of anti-magnetic interference of the utility model and sampling are double
One specific embodiment stereoscopic schematic diagram of twisted wire；
Fig. 3 is that a kind of I-shaped manganese copper diverter of the single-phase measurement module of anti-magnetic interference of the utility model and sampling are double
One specific embodiment stereoscopic schematic diagram of twisted wire.
Specific implementation mode
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.
A kind of single-phase measurement module of anti-magnetic interference is that a kind of diamagnetic field of the utility model is dry with reference to figure 1 and Fig. 2, Fig. 1
One specific embodiment schematic diagram of the single-phase measurement module disturbed；Fig. 2 is a kind of single-phase measurement of anti-magnetic interference of the utility model
One specific embodiment stereoscopic schematic diagram of the I-shaped manganese copper diverter and sampling twisted-pair feeder of module；Including pcb board and metering core
Piece, computation chip are arranged on pcb board, and single-phase measurement module further includes I-shaped manganese copper diverter 1, I-shaped manganese copper diverter
1 is connect by sampling twisted-pair feeder 2 (i.e. signal wire I+1, signal wire I-1) with the tie point of pcb board, sample twisted-pair feeder 2 respectively from
The link position of the positive and negative of I-shaped manganese copper diverter 1 draws and keeps the both threads of sampling twisted-pair feeder 2 parallel, symmetrical,
The tie point of pcb board and the input terminal of computation chip connect.Specifically, the respective line nose 3 of both threads and work of twisted-pair feeder 2 are sampled
The center weld of the positive and negative of font manganese copper diverter 1, due to the symmetric design of solder joint, (i.e. sampling is double for current sampling signal line
Twisted wire 2) symmetrical outlet method, ensure that current sampling signal line is parallel, symmetrical to the maximum extent；Then external generation magnetic field can phase
It mutually offsets and (cancels out each other in the magnetic field generated between manganese copper diverter and sampling twisted-pair feeder), can be further ensured that single-phase measurement mould
Block solves the problems, such as that single-phase electronic energy meter is influenced by 0.5mT power frequency magnetic field not by magnetic interference.
As being further improved for technical solution, referring to figs. 2 and 3, single-phase measurement module further includes that setting is double in sampling
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, to which the entire signal for sampling twisted-pair feeder 2 be effectively ensured from I-shaped manganese
It is not influenced by magnetic interference before copper current divider 1 to pcb board.
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, ensures that the magnetic fields of different directions can cancel out each other when sampling twisted-pair feeder, 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 the track in the reverse side of pcb board and current signal modulation circuit is arranged
Enter end connection, samples another tie point of twisted-pair feeder and pcb board by the way that positive track and reverse side in pcb board is arranged
It is connect with an input terminal of current signal modulation circuit by via after track layering intersection, current signal modulation circuit
Two output ends are connect with two input terminals of computation chip respectively, and two track layerings intersect at an intersection point at two
The first magnetic field ring and the second magnetic field magnetic fields Huan Liangge 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 input terminal of current signal modulation circuit, the other end of the other end of the first current-limiting resistance R1 and the second current-limiting resistance R2
For the output end of 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
The bottom of current-limiting resistance R2, signal wire I+1 in pcb board), dotted line indicates that the bottom in pcb board, solid line indicate 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 utility model passes through current sample in symmetrical, the parallel outlet design and pcb board to I-shaped manganese copper diverter
The layout of signal wire eliminates influence of the 0.5mT power frequency magnetic field to metering module, ensure signal wire six faces of pcb board not
It is influenced by magnetic interference；I-shaped manganese copper diverter design and the design of electric energy meter current sampled signal pcb board configuration exist
Physical layer is independent, is combined together indeed through current sampling signal, realizes the work(of respective anti-magnetic interference
Energy.The mode that component optimization and PCB layout optimization are carried out during electric energy meter finished article design, realizes small change, cost
Low, the influence of 0.5mT power frequency magnetic field can be solved in bulk article by fully meeting electric energy meter, improve the anti-magnetic interference of electric energy meter field
Ability ensures that electronic electric energy meter precisely measures.To realize electronic electric energy meter " 0.5mT power frequency magnetic field is non-loaded, electric energy
Table voltage circuit passes to 115%Un, and it is affected by magnetic fields most to be applied to electric energy meter by current loop no current for 0.5mT power frequency magnetic field
At sensitivity, within 20 times of theoretical starting time, electric energy meter should not generate the pulse output of more than one." fully meet state's household electrical appliances
What net company promulgated《Q/GDW1364-2013 single-phase intelligent electric energy meter technical specifications》The requirement of middle 4.5.11 influence amounts.
It is to be illustrated to the preferable implementation of the utility model, but the invention is not limited to the reality above
Example is applied, those skilled in the art can also make various equivalent variations without departing from the spirit of the present invention
Or replace, 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 in 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 is logical
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 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 of the sampling twisted-pair feeder and pcb board is existed by setting
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 the way that the positive track in the pcb board is arranged
It is connect with an input terminal of current signal modulation circuit by via, two output ends 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 magnetic fields Huan Liangge 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 end of signal modulation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721857343.5U CN207894995U (en) | 2017-12-27 | 2017-12-27 | A kind of single-phase measurement module of anti-magnetic interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721857343.5U CN207894995U (en) | 2017-12-27 | 2017-12-27 | A kind of single-phase measurement module of anti-magnetic interference |
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| Publication Number | Publication Date |
|---|---|
| CN207894995U true CN207894995U (en) | 2018-09-21 |
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| CN201721857343.5U Active CN207894995U (en) | 2017-12-27 | 2017-12-27 | A kind of single-phase measurement module of anti-magnetic interference |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108226631A (en) * | 2017-12-27 | 2018-06-29 | 南昌市科陆智能电网科技有限公司 | A kind of single-phase measurement module of anti-magnetic interference |
| CN109521255A (en) * | 2018-12-27 | 2019-03-26 | 苏州汇川技术有限公司 | Circuit board and power electronic equipment |
| CN110836986A (en) * | 2019-11-25 | 2020-02-25 | 新沂市鑫洋电子有限公司 | Manganese-copper current divider for electronic electric energy meter and application thereof |
-
2017
- 2017-12-27 CN CN201721857343.5U patent/CN207894995U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108226631A (en) * | 2017-12-27 | 2018-06-29 | 南昌市科陆智能电网科技有限公司 | A kind of single-phase measurement module of anti-magnetic interference |
| CN108226631B (en) * | 2017-12-27 | 2024-02-23 | 深圳市科陆电子科技股份有限公司 | Single-phase metering module for resisting magnetic field interference |
| 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 |
| CN110836986A (en) * | 2019-11-25 | 2020-02-25 | 新沂市鑫洋电子有限公司 | Manganese-copper current divider for electronic electric energy meter and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210823 Address after: 518000 A6 2A, Guangming science and Technology Park, 3009 merchants Road, Guangming New District, Shenzhen, Guangdong Patentee after: Shenzhen Clou Electronics Co.,Ltd. Patentee after: NANCHANG KELU SMART GRID TECHNOLOGY Co.,Ltd. Address before: 330000 east of Chuangxin 2nd Road, south of aixihu 4th Road and west of Chuangxin 3rd road in Nanchang hi tech Industrial Development Zone, Jiangxi Province Patentee before: NANCHANG KELU SMART GRID TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |