CN202815037U - Electronic electric energy meter capable of reducing interference on current divider caused by alternating magnetic filed - Google Patents
Electronic electric energy meter capable of reducing interference on current divider caused by alternating magnetic filed Download PDFInfo
- Publication number
- CN202815037U CN202815037U CN 201220505891 CN201220505891U CN202815037U CN 202815037 U CN202815037 U CN 202815037U CN 201220505891 CN201220505891 CN 201220505891 CN 201220505891 U CN201220505891 U CN 201220505891U CN 202815037 U CN202815037 U CN 202815037U
- Authority
- CN
- China
- Prior art keywords
- magnetic field
- conducting strip
- electric energy
- energy meter
- shunt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model discloses an electronic electric energy meter capable of reducing interference on a current divider caused by an alternating magnetic field. The electronic electric energy meter capable of reducing the interference on the current divider caused by the alternating magnetic field comprises the current divider, a relay, and a circuit board of the electronic electric energy meter. The current divider is of a sheet structure. The current divider comprises a first conductive sheet, a second conductive sheet, and a sampling sheet resistor prepared from a high-resistivity material. Two ends of the sampling sheet resistor are respectively connected with the first conductive sheet and the second conductive sheet. The current divider is connected to one side of the relay through the first conductive sheet. The installation position of the current divider is provided with the interference magnetic field with a certain magnetic field direction. The sampling sheet resistor is of a planar structure. The plane of the sampling sheet resistor is set to be parallel with the magnetic field direction of the interference magnetic field, and the first and second conductive sheets are respectively arranged at two sides of the sampling sheet resistor along the magnetic field direction of the interference magnetic field. With the structure, the electronic electric energy meter capable of reducing the interference on the current divider caused by the alternating magnetic field can reduce the interference on the current divider as a current sampling element caused by the alternating magnetic field, and reduces the influence on current sampling signals caused by the magnetic field, thereby effectively guaranteeing the metering accuracy of the electronic electric energy meter.
Description
Technical field
The utility model relates to the electronic instrument technical field, particularly relates to the electronic electric energy meter that a kind of shunt that can reduce as the current sample element is disturbed by alternating magnetic field.
Background technology
Electronic electric energy meter is a kind of electronic instrument equipment, it passes through customer power supply voltage and current real-time sampling, adopt special-purpose electric energy meter integrated circuit, sampled voltage and current signal processed and multiply each other converting the pulse output that is directly proportional with electric energy to, show by register or digital indicator again.A kind of electronic electric energy meter of prior art is to adopt the contour stability material of copper-manganese to make the current sample element, namely as sampling resistor, Fig. 1 is the organigram of the electronic electric energy meter of prior art, Fig. 2 is the structural representation of current sampling circuit of the electronic electric energy meter of prior art, Fig. 3 is the structural representation of manganese copper diverter of the electronic electric energy meter of prior art, Fig. 4 is the scheme of installation of manganese copper diverter of the electronic electric energy meter of prior art, referring to shown in Figure 1, manganese copper diverter 100 and relay 104 are installed in the housing 200 of electronic electric energy meter, because the cause of electronic electric energy meter stube cable, can produce magnetic direction alternating electromagnetism as shown by arrows in FIG. disturbs, this magnetic direction determines, is connected with manganese copper diverter 100 at a side of relay 104.Extremely shown in Figure 4 referring to Fig. 2, this manganese copper diverter 100 comprises the first fine copper sheet part 101, copper-manganese sheet part 102 and the second fine copper sheet part 103, wherein, the two ends of copper-manganese sheet part 102 are connected with the second fine copper sheet part 103 one with the first fine copper sheet part 101 respectively, and the first fine copper sheet part 101, copper-manganese sheet part 102 and the second fine copper sheet part 103 all are plane-shaped structures and are to be in the same plane, manganese copper diverter 100 is connected in an exit of relay 104 usually, the the first fine copper sheet part 101 that is manganese copper diverter 100 is connected on the exit of relay 104, be provided with the first link 1011 of close copper-manganese sheet part 102 in the first fine copper sheet part 101, be provided with the second link 1031 of close copper-manganese sheet part 102 in the second fine copper sheet part 103, on the first link 1011 and the second link 1031, respectively be welded with a signal line 105, the end of two signal line 105 is connected on the circuit board 106 of electronic electric energy meter, like this, the electric current of crossing copper-manganese sheet part 102 by acquisition stream just can be used for obtaining customer power supply electric current real-time sampling.The electronic electric energy meter of this structure, when external interference was arranged, the table meter may be mistakened as interference several pulses and count electric energy.Under the effect of alternating electromagnetic field, the closed-loop path that the circuit board 106 of manganese copper diverter 100, signal wire 105, electronic electric energy meter consists of can generate induction electromotive force, produces induction current, hinders the variation of circuital current.According to the law of electromagnetic induction as can be known:
Wherein φ is the magnetic flux that passes the closed-loop path, and t is the time, and B is magnetic induction density, and S is the area perpendicular to magnetic direction; And then the measuring accuracy of ammeter impacted, the measuring accuracy impact of particularly little current signal is very large.On the other hand, when deenergization, owing to be subjected to the effect in magnetic field, the self inductance current that the closed-loop path that the circuit board of manganese copper diverter, signal wire, electronic electric energy meter consists of produces can make electric energy meter current indication occur; Cause without electric energy meter under any loading condition and measure mistakenly power consumption.The electronic electric energy meter of this structure, manganese copper diverter 100 is connected to a side of relay 104 usually, be subject to the disturbing magnetic field impact of cable, has the magnetic interference signal of directions at this side of relay 104, shown in the arrow among Fig. 4, like this, the copper-manganese sheet part 102 that is connected to relay 104 1 sides just is perpendicular to the magnetic direction of disturbing magnetic field, then the whole face of copper-manganese sheet part 102 is all passed by lines of magnetic induction, and therefore, circuit can be subject to larger magnetic interference.
The utility model content
The purpose of this utility model is to overcome the deficiency of prior art, provide a kind of and can reduce the electronic electric energy meter that shunt is disturbed by alternating magnetic field, improve by structure and mounting means to shunt, the shunt that can reduce as the current sample element is disturbed by alternating magnetic field, reduce magnetic field to the impact of current sampling signal, thereby effectively guarantee the electronic electric energy meter measurement accuracy.
The technical scheme that its technical matters that solves the utility model adopts is: a kind ofly can reduce the electronic electric energy meter that shunt is disturbed by alternating magnetic field, comprise the circuit board of shunt, relay and electronic electric energy meter; Shunt is the sheet body structure, this shunt comprises sampling resistor sheet and the second conducting strip that the first conducting strip, high resistivity material are made, the two ends of sampling resistor sheet are connected with the second conducting strip with the first conducting strip respectively, this shunt is connected on the exit of a side of relay by the first conducting strip, has the disturbing magnetic field that magnetic direction is determined in the installation place of shunt; Described sampling resistor sheet is plane-shaped structure, and the plane layout of this sampling resistor sheet becomes to be parallel to the magnetic direction of described disturbing magnetic field, and the first conducting strip, the second conducting strip are located at respectively the both sides along the magnetic direction of described disturbing magnetic field of sampling resistor sheet.
Described the first conducting strip and the second conducting strip are plane-shaped structure, and the first conducting strip is perpendicular to described sampling resistor sheet, and the second conducting strip and sampling resistor sheet are in same plane and so that described shunt is the L-type shape.
Described the first conducting strip and the second conducting strip are plane-shaped structure, and the first conducting strip is perpendicular to described sampling resistor sheet, and the second conducting strip also perpendicular to described sampling resistor sheet so that the Z-shaped shape of described shunt.
The exit of one side of described relay also is provided with lead-out tablet, and described lead-out tablet is perpendicular to the magnetic direction of described disturbing magnetic field; The first conducting strip also stretches out and is provided with the first stator, and the first stator and the first conducting strip are vertical connection, and the lead-out tablet of described the first stator and relay reclines and fixes.
The two ends of described sampling resistor sheet also are provided with the first link and the second link, respectively connect a signal line with being connected on the link at the first link, and the end of two signal line is connected respectively on the circuit board of electronic electric energy meter.
Described the first link and the second link are located at respectively on the sampling resistor sheet.
Described the first link is located at the position of the close sampling resistor sheet of the first conducting strip, and described the second link is located at the position of the close sampling resistor sheet of the second conducting strip.
The two ends of described sampling resistor sheet are connected with the second conducting strip one with the first conducting strip respectively.
Of the present utility modelly a kind ofly can reduce the electronic electric energy meter that shunt is disturbed by alternating magnetic field, with the side of shunt transverse weld at relay, by diverter designs being become L-type or Z-type, make the sampling resistor sheet of shunt be parallel to the magnetic direction of definite disturbing magnetic field, will become less perpendicular to the projected area of the magnetic direction of disturbing magnetic field with respect to the projected area of original structure, the induction electromotive force that namely generates is less, can reduce high shunt and disturbed by alternating magnetic field, be subjected to the interference in magnetic field thereby reduced current sampling circuit.
The beneficial effects of the utility model are, because the sampling resistor sheet that has adopted the high resistivity material with shunt to be made is designed to be parallel to the magnetic direction of definite disturbing magnetic field, becoming less perpendicular to the projected area of the magnetic direction of disturbing magnetic field with respect to the projected area of original structure, according to law of electromagnetic induction formula, the induction electromotive force that the disturbing magnetic field that is produced by cable generates also can be less, reduce current sampling circuit and be subjected to the interference in magnetic field, thereby effectively guaranteed the electronic electric energy meter measurement accuracy.
Be compared to prior art, can bring following beneficial effect:
1, can reduce the interference that shunt is disturbed magnetic field;
2, easily processing, in batches industrialization;
3, low cost.
Below in conjunction with drawings and Examples the utility model is described in further detail; But a kind of shunt that can reduce of the present utility model is subjected to the electronic electric energy meter of alternating magnetic field interference to be not limited to embodiment.
Description of drawings
Fig. 1 is the organigram of the electronic electric energy meter of prior art;
Fig. 2 is the structural representation of current sampling circuit of the electronic electric energy meter of prior art;
Fig. 3 is the structural representation of manganese copper diverter of the electronic electric energy meter of prior art;
Fig. 4 is the scheme of installation of manganese copper diverter of the electronic electric energy meter of prior art;
Fig. 5 is the structural representation of the shunt of electronic electric energy meter of the present utility model;
Fig. 6 is the side view of the shunt of electronic electric energy meter of the present utility model;
Fig. 7 is the structural representation that the shunt of electronic electric energy meter of the present utility model connects signal wire;
Fig. 8 is the scheme of installation of the shunt of electronic electric energy meter of the present utility model.
Embodiment
Embodiment, extremely shown in Figure 8 referring to Fig. 5, of the present utility modelly a kind ofly can reduce the electronic electric energy meter that shunt is disturbed by alternating magnetic field, comprise shunt 1, the circuit board (not shown) of relay 2 and electronic electric energy meter, shunt 1 is the sheet body structure, shunt 1 comprises the first conducting strip 11, the sampling resistor sheet 12 that high resistivity material is made and the second conducting strip 13, the high resistivity material of present embodiment is to select copper-manganese, be that shunt 1 is manganese copper diverter 1, certainly, high resistivity material can also be other material, such as constantan etc., the material selection fine copper of the first conducting strip 11 and the second conducting strip 13 can certainly be that other conductive material is made; The two ends of sampling resistor sheet 12 are connected with the second conducting strip 13 one with the first conducting strip 11 respectively, manganese copper diverter 1 is connected on the exit of a side 21 of relay 2 by the first conducting strip 11, the disturbing magnetic field that has definite magnetic direction in the installation place of manganese copper diverter, the arrow indication among magnetic direction such as Fig. 7, Fig. 8; Described sampling resistor sheet 12 is plane-shaped structure, the plane layout of this sampling resistor sheet 12 becomes to be parallel to the magnetic direction of described disturbing magnetic field, and the first conducting strip 11, the second conducting strip 13 are located at respectively the both sides along the magnetic direction of described disturbing magnetic field of sampling resistor sheet 12, that is to say that the first conducting strip 11, sampling resistor sheet 12 and the second conducting strip 13 sequentially are not connected along magnetic direction.
Described the first conducting strip 11 and the second conducting strip 13 are plane-shaped structure, and the first conducting strip 11 is perpendicular to described sampling resistor sheet 12, and the second conducting strip 13 is in same plane with sampling resistor sheet 12 and so that manganese copper diverter is the L-type shape.
Certainly, also can be another kind of structure, described the first conducting strip and the second conducting strip are plane-shaped structure, the first conducting strip is perpendicular to described sampling resistor sheet, and the second conducting strip also perpendicular to described sampling resistor sheet so that the Z-shaped shape of manganese copper diverter.
The exit of one side 21 of described relay 2 also is provided with lead-out tablet 22, and described lead-out tablet 22 is perpendicular to the magnetic direction of described disturbing magnetic field; The first conducting strip 11 also stretches out and is provided with the first stator 14, the first stators 14 and the first conducting strip 11 is vertical connection, and the lead-out tablet 22 of described the first stator 14 and relay reclines and fixes.The first stator 14 of manganese copper diverter 1 is to fix with relay 2, also is provided with the second stator 15 and is used for fixing with the ammeter housing on manganese copper diverter 1.
The two ends of described sampling resistor sheet also are provided with the first link 111 and the second link 131, the first link 111 be connected the end that connects respectively a signal line 3, two signal line 3 on the link 131 and be connected respectively on the circuit board of electronic electric energy meter.
Described the first link 111 and the second link 131 are located on the sampling resistor sheet.Certainly, also can be another kind of scheme, that is, the first link is located at the position of the close sampling resistor sheet of the first conducting strip, and the second link is located at the position of the close sampling resistor sheet of the second conducting strip.
Of the present utility modelly a kind ofly can reduce the electronic electric energy meter that shunt is disturbed by alternating magnetic field, with the side of shunt transverse weld at relay, by diverter designs being become L-type or Z-type, the sampling resistor sheet that the high resistivity material of shunt is made is parallel to the magnetic direction of described disturbing magnetic field, becoming less perpendicular to the projected area of the magnetic direction of disturbing magnetic field with respect to the projected area of original structure, the induction electromotive force that namely generates is less, can enough eliminate the reduction shunt and disturbed by alternating magnetic field, be subjected to the interference in magnetic field thereby reduced current sampling circuit.
Above-described embodiment only is used for further specifying and of the present utility modelly a kind ofly can reduces the electronic electric energy meter that shunt is disturbed by alternating magnetic field; but the utility model is not limited to embodiment; every foundation technical spirit of the present utility model all falls in the protection domain of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment does.
Claims (8)
1. one kind can be reduced the electronic electric energy meter that shunt is disturbed by alternating magnetic field, comprises the circuit board of shunt, relay and electronic electric energy meter; Shunt is the sheet body structure, this shunt comprises sampling resistor sheet and the second conducting strip that the first conducting strip, high resistivity material are made, the two ends of sampling resistor sheet are connected with the second conducting strip with the first conducting strip respectively, this shunt is connected on the exit of a side of relay by the first conducting strip, has the disturbing magnetic field that magnetic direction is determined in the installation place of shunt; It is characterized in that: described sampling resistor sheet is plane-shaped structure, the plane layout of this sampling resistor sheet becomes to be parallel to the magnetic direction of described disturbing magnetic field, and the first conducting strip, the second conducting strip are located at respectively the both sides along the magnetic direction of described disturbing magnetic field of sampling resistor sheet.
2. according to claim 1ly can reduce the electronic electric energy meter that shunt is disturbed by alternating magnetic field, it is characterized in that: described the first conducting strip and the second conducting strip are plane-shaped structure, the first conducting strip is perpendicular to described sampling resistor sheet, and the second conducting strip and sampling resistor sheet are in same plane and so that described shunt is the L-type shape.
3. according to claim 1ly can reduce the electronic electric energy meter that shunt is disturbed by alternating magnetic field, it is characterized in that: described the first conducting strip and the second conducting strip are plane-shaped structure, the first conducting strip is perpendicular to described sampling resistor sheet, and the second conducting strip also perpendicular to described sampling resistor sheet so that the Z-shaped shape of described shunt.
4. according to claim 1 and 2 or 3 describedly can reduce the electronic electric energy meter that shunt is disturbed by alternating magnetic field, it is characterized in that: the exit of a side of described relay also is provided with lead-out tablet, and described lead-out tablet is perpendicular to the magnetic direction of described disturbing magnetic field; The first conducting strip also stretches out and is provided with the first stator, and the first stator and the first conducting strip are vertical connection, and the lead-out tablet of described the first stator and relay reclines and fixes.
5. according to claim 1ly can reduce the electronic electric energy meter that shunt is disturbed by alternating magnetic field, it is characterized in that: the two ends of described sampling resistor sheet also are provided with the first link and the second link, respectively connect a signal line with being connected on the link at the first link, the end of two signal line is connected respectively on the circuit board of electronic electric energy meter.
6. according to claim 5ly can reduce the electronic electric energy meter that shunt is disturbed by alternating magnetic field, it is characterized in that: described the first link and the second link are located at respectively on the sampling resistor sheet.
7. according to claim 5ly can reduce the electronic electric energy meter that shunt is disturbed by alternating magnetic field, it is characterized in that: described the first link is located at the position of the close sampling resistor sheet of the first conducting strip, and described the second link is located at the position of the close sampling resistor sheet of the second conducting strip.
8. according to claim 1 and 2 or 3 describedly can reduce the electronic electric energy meter that shunt is disturbed by alternating magnetic field, it is characterized in that: the two ends of described sampling resistor sheet are connected with the second conducting strip one with the first conducting strip respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220505891 CN202815037U (en) | 2012-09-28 | 2012-09-28 | Electronic electric energy meter capable of reducing interference on current divider caused by alternating magnetic filed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220505891 CN202815037U (en) | 2012-09-28 | 2012-09-28 | Electronic electric energy meter capable of reducing interference on current divider caused by alternating magnetic filed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202815037U true CN202815037U (en) | 2013-03-20 |
Family
ID=47873895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220505891 Expired - Lifetime CN202815037U (en) | 2012-09-28 | 2012-09-28 | Electronic electric energy meter capable of reducing interference on current divider caused by alternating magnetic filed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202815037U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105353184A (en) * | 2015-10-09 | 2016-02-24 | 厦门宏发电力电器有限公司 | Shunt piece, relay, and electronic-type electric energy meter |
| CN107345977A (en) * | 2017-07-03 | 2017-11-14 | 杭州海兴电力科技股份有限公司 | The Wiring structure of the pin configuration of manganese copper diverter, pcb board and pcb board |
| CN111693769A (en) * | 2019-03-15 | 2020-09-22 | 宁波三星智能电气有限公司 | Electric energy meter |
-
2012
- 2012-09-28 CN CN 201220505891 patent/CN202815037U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105353184A (en) * | 2015-10-09 | 2016-02-24 | 厦门宏发电力电器有限公司 | Shunt piece, relay, and electronic-type electric energy meter |
| CN107345977A (en) * | 2017-07-03 | 2017-11-14 | 杭州海兴电力科技股份有限公司 | The Wiring structure of the pin configuration of manganese copper diverter, pcb board and pcb board |
| CN107345977B (en) * | 2017-07-03 | 2020-01-17 | 杭州海兴电力科技股份有限公司 | Lead structure of manganin shunt, PCB and wiring structure of PCB |
| CN111693769A (en) * | 2019-03-15 | 2020-09-22 | 宁波三星智能电气有限公司 | Electric energy meter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202903841U (en) | Electronic watt-hour meter capable of resisting alternating magnetic field interference | |
| CN102323459B (en) | Alternating magnetic field-resistant manganin current divider | |
| CN203191419U (en) | Intelligent electricity meter with diamagnetic structured electromagnetic current transformers | |
| WO2021169456A1 (en) | Shunt lead structure, electric power instrument and method for manufacturing shunt lead structure | |
| CN202870138U (en) | Manganin shunt and electronic Watt-hour meter | |
| CN2884212Y (en) | Electric power meter by using copper-manganese current-diverter for current sampling | |
| CN102590587A (en) | Device and method for identifying short-circuit current of medium-voltage high-current direct current circuit breaker | |
| CN202815037U (en) | Electronic electric energy meter capable of reducing interference on current divider caused by alternating magnetic filed | |
| CN203587681U (en) | Electronic electric energy meter resistant to magnetic-field interference | |
| CN106353561A (en) | Current detection chip and current detection method | |
| CN202177647U (en) | Alternating magnetic field resistant manganin diverter | |
| CN202939197U (en) | Shunt of electronic watt-hour meter capable of resisting alternating magnetic field interference | |
| JP2013205120A (en) | Power measuring device | |
| CN202815087U (en) | Electronic electric energy meter capable of reducing alternating electromagnetic interference | |
| CN215219138U (en) | Anti-interference device of electric energy meter | |
| CN211856700U (en) | Shunt lead structure, wiring terminal button box thereof and electric instrument thereof | |
| CN2779411Y (en) | An air-core coil current sensor for measuring power frequency heavy current | |
| CN202837357U (en) | Electronic watt-hour meter capable of decreasing interference on diverter by alternating magnetic field | |
| CN110320404A (en) | A kind of analog-to-digital conversion sensor | |
| CN110836987B (en) | Manganese-copper shunt of three-phase intelligent electric energy meter and application thereof | |
| CN201122169Y (en) | Electronic high voltage current mutual inductor | |
| CN201689775U (en) | Manganin mutual inductor preventing alternating magnetic field | |
| CN213633577U (en) | High dynamic range alternating current/direct current isolation measuring circuit for measuring instrument | |
| KR200446847Y1 (en) | Current measuring instrumnet using hall effect | |
| CN103713267A (en) | Continuous iron-loss measurement wire frame for electrical steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |
|
| CX01 | Expiry of patent term |