CN110702956A - Electronic electric energy meter for resisting electromagnetic interference - Google Patents
Electronic electric energy meter for resisting electromagnetic interference Download PDFInfo
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- CN110702956A CN110702956A CN201910789863.4A CN201910789863A CN110702956A CN 110702956 A CN110702956 A CN 110702956A CN 201910789863 A CN201910789863 A CN 201910789863A CN 110702956 A CN110702956 A CN 110702956A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/04—Housings; Supporting racks; Arrangements of terminals
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/50—Fixed connections
- H01R12/51—Fixed connections for rigid printed circuits or like structures
- H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
- H01R12/58—Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/20—Connectors or connections adapted for particular applications for testing or measuring purposes
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- General Physics & Mathematics (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses an electronic electric energy meter for resisting electromagnetic interference, which is characterized in that wiring is arranged, the upper electric conductor of a first through hole on the front surface of a circuit board is taken as a starting point, the lower electric conductor of a second through hole on the back surface of the circuit board is taken as an end point, a first sampling pin and a second sampling pin of a sampling resistance card are respectively connected with the upper electric conductor of the first through hole and the second through hole of the circuit board, the space surrounded by the front wiring and the back wiring is matched with the area of the plate surface of the sampling resistance card, so that the direction of induced electromotive force generated by the wiring of the circuit board and the direction of induced electromotive force generated by the sampling resistance card of an interference magnetic field are opposite, and the induced electromotive force of the interference magnetic field is completely counteracted, and the invention can realize automatic assembly on the basis of not increasing hardware cost, fine adjustment is not required after assembly is completed.
Description
Technical Field
The invention relates to the technical field of electronic instruments, in particular to an electronic electric energy meter for resisting electromagnetic interference.
Background
The present electronic electric energy meter is an electronic instrument device, which samples the voltage and current supplied by the user in real time, adopts a special electric energy meter integrated circuit to process and multiply the sampled voltage and current signals into pulse output in direct proportion to the electric energy, and then displays the pulse output by a meter or a digital display. The electronic electric energy meter in the prior art usually adopts high-stability materials such as manganin to manufacture a current sampling element, namely a manganin splitter, but because of the interference of an external magnetic field, self-induction current flows through the manganin splitter, so that the current reading error of the electric energy meter occurs, and the electric energy meter measures the power consumption incorrectly under the condition of no load. In order to solve the interference of the magnetic field, one scheme of the prior art is to provide a through hole in the middle of the manganin splitter, weld two signal sampling lines on the upper and lower sampling pins of the manganin splitter respectively, and let one of the signal sampling lines pass through the through hole in the middle of the manganin splitter, and then connect to the circuit board of the electronic electric energy meter together with the other signal sampling line, so as to achieve a better magnetic field interference resistance effect and achieve an effect of resisting 0.5 mT.
Disclosure of Invention
The invention aims to provide an anti-electromagnetic interference electronic electric energy meter, and aims to solve the technical problem that the anti-interference electronic electric energy meter in the prior art can meet the national grid requirement only by fine adjustment when a product is subjected to meter installation test at a client due to the structural characteristic of a signal sampling line, and the signal sampling line is too soft and cannot be automatically assembled.
In order to achieve the purpose, the electronic electric energy meter for resisting electromagnetic interference comprises a shunt, a circuit board and a magneto coil, wherein the circuit board is fixedly connected with the shunt and is positioned at the upper end of the shunt, the circuit board is provided with a plurality of through holes, the through holes are distributed on the surface of the circuit board side by side and are uniformly distributed on the left and right, and the magneto coil is fixedly connected with the shunt, is fixedly connected with the circuit board, penetrates through the through holes and is also positioned on the surface of the circuit board; the shunt comprises a first sampling pin, a second sampling pin and a sampling resistor disc, wherein the first sampling pin is fixedly connected with the circuit board, penetrates through the circuit board, is close to the via hole on the left side of the circuit board, and is also located at the end part of the via holes which are horizontally arranged; the magnetism generating coil comprises a front wiring and a back wiring, the front wiring is fixedly connected with the circuit board, two ends of the front wiring extend into the two sides of the circuit board respectively, the two ends of the front wiring are located in the through holes, the number of the front wiring is multiple, the front wiring is arranged on the upper surface of the circuit board in parallel, one end of the first sampling pin is close to the first sampling pin, the back wiring is fixedly connected with the circuit board, the two ends of the back wiring are located in the two sides of the circuit board, the two ends of the back wiring are arranged in the through holes, the number of the back wiring is multiple, the two ends of the back wiring are arranged on the lower surface of the circuit board in parallel, and.
The circuit board is provided with a first through hole and a second through hole, the first through hole is sleeved with the first sampling pin and is close to the via hole on the left side of the circuit board, and the second through hole is sleeved with the second sampling pin and is close to the via hole on the right side of the circuit board; the shunt also comprises an electric connector, the electric connector is fixedly connected with the circuit board, the number of the electric connector is two, the electric connector is respectively fixedly connected with the first sampling pin and the second sampling pin, and the electric connector is respectively positioned in the first through hole and the second through hole.
The electric connector comprises an upper electric conductor and two lower electric conductors, wherein the upper electric conductors are fixedly connected with the circuit board, are respectively fixedly connected with the first sampling pin and the second sampling pin, are connected with the front routing wire on the left side of the circuit board, are also arranged on the upper surface of the circuit board and are respectively arranged in the first through hole and the second through hole; the lower conductor is fixedly connected with the circuit board, connected with the back wiring, positioned on the lower surface of the circuit board and positioned in the second through hole.
The electronic electric energy meter for resisting electromagnetic interference further comprises a relay, wherein the relay is fixedly connected with the shunt and is positioned on one side of the shunt, which is far away from the circuit board.
The relay comprises a first leading-out end and a second leading-out end, wherein the first leading-out end is fixedly connected with the sampling resistor disc and is positioned on one side, far away from the circuit board, of the sampling resistor disc; the second leading-out end is fixedly connected with the first leading-out end, is positioned on the surface of the first leading-out end and extends towards the direction far away from the first leading-out end.
The electronic electric energy meter for resisting electromagnetic interference further comprises a shell and a cover plate, wherein the shell is fixedly connected with the circuit board, fixedly connected with the relay, arranged around the outer side of the circuit board and arranged around the outer side of the relay, and provided with an opening, and the opening is positioned on the upper surface of the shell and faces the circuit board; the cover plate is rotatably connected with the shell and covers the opening.
The cover plate is provided with heat dissipation holes, and the heat dissipation holes penetrate through the cover plate and face the circuit board.
The invention relates to an electronic electric energy meter for resisting electromagnetic interference, which is characterized in that routing takes the upper conductor of the first through hole on the front surface of a circuit board as a starting point and takes the lower conductor of the second through hole on the back surface of the circuit board as an end point, the first sampling pin and the second sampling pin of a sampling resistance chip are respectively connected with the upper conductors of the first through hole and the second through hole of the circuit board, the space surrounded by the front routing and the back routing is matched with the area of the plate surface of the sampling resistance chip, so that an interference magnetic field is opposite to the direction of the induced electromotive force generated by the interference magnetic field on the sampling resistance chip in the direction of the induced electromotive force generated by the circuit board routing and the direction of the induced electromotive force generated by the interference magnetic field on the sampling resistance chip, and the induced electromotive force of the interference magnetic field is completely counteracted, and the invention can realize automatic assembly on the basis of not, fine adjustment is not required after assembly is completed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of the internal structure of the electric energy meter of the present invention.
Fig. 2 is an exploded view of the shunt and circuit board of the present invention.
Figure 3 is a schematic diagram of the connection of the shunt and the circuit board of the present invention.
Fig. 4 is a routing diagram on a circuit board of the present invention.
Fig. 5 is a schematic view of the surface structure of the housing of the present invention.
In the figure: 1-shunt, 2-circuit board, 3-magnetic generating coil, 4-relay, 5-shell, 6-cover plate, 11-first sampling pin, 12-second sampling pin, 13-sampling resistance sheet, 14-electric connector, 21-via hole, 22-first through hole, 23-second through hole, 31-front wiring, 32-back wiring, 41-first leading-out terminal, 42-second leading-out terminal, 51-opening, 61-heat dissipation hole, 100-electronic electric energy meter for anti-electromagnetic interference, 141-upper conductor and 142-lower conductor.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Example 1:
referring to fig. 1, 2, 3 and 4, the present invention provides an electronic electric energy meter 100 for resisting electromagnetic interference, including a shunt 1, a circuit board 2 and a magnetizing coil 3, wherein the circuit board 2 is fixedly connected to the shunt 1 and is located at an upper end of the shunt 1, the circuit board 2 has a plurality of via holes 21, the via holes 21 are distributed on a surface of the circuit board 2 side by side and are evenly distributed on the left and right, and the magnetizing coil 3 is fixedly connected to the shunt 1, is fixedly connected to the circuit board 2, penetrates through the via holes 21, and is also located on the surface of the circuit board 2; the shunt 1 comprises a first sampling pin 11, a second sampling pin 12 and a sampling resistor disc 13, wherein the first sampling pin 11 is fixedly connected with the circuit board 2, penetrates through the circuit board 2, is close to the via hole 21 positioned on the left side of the circuit board 2, and is also positioned at the end part of a plurality of horizontally arranged via holes 21, the second sampling pin 12 is fixedly connected with the circuit board 2, penetrates through the circuit board 2, is close to the via hole 21 positioned on the right side of the circuit board 2, is also positioned at the end part of the plurality of horizontally arranged via holes 21, is positioned at the same side as the first sampling pin 11, and the sampling resistor disc 13 is fixedly connected with the first sampling pin 11, is fixedly connected with the second sampling pin 12, and is positioned at one end of the first sampling pin 11 far away from the circuit board 2; the magneto coil 3 includes that the line 31 is walked on the front and the line 32 is walked on the back, the line 31 is walked on the front with 2 fixed connection of circuit board to both ends stretch into respectively and are located two of the 2 left and right sides of circuit board in the via hole 21, and quantity is many, arrange in parallel each other in the upper surface of circuit board 2 still is close to the one end of first sample foot 11 with first sample foot 11 is connected, the line 32 is walked on the back with 2 fixed connection of circuit board to both ends stretch into respectively and are located two of the 2 left and right sides of circuit board in the via hole 21, and quantity is many, arrange in parallel each other in the lower surface of circuit board 2 still connects second sample foot 12.
Further, the circuit board 2 has a first through hole 22 and a second through hole 23, the first through hole 22 is sleeved with the first sampling pin 11 and is close to the via hole 21 located at the left side of the circuit board 2, and the second through hole 23 is sleeved with the second sampling pin 12 and is close to the via hole 21 located at the right side of the circuit board 2; the shunt 1 further comprises an electric connector 14, the electric connector 14 is fixedly connected with the circuit board 2, the number of the electric connector 14 is two, the electric connector 14 is fixedly connected with the first sampling pin 11 and the second sampling pin 12 respectively, and the electric connector is located inside the first through hole 22 and the second through hole 23 respectively.
Further, the electrical connector 14 includes an upper electrical conductor 141 and a lower electrical conductor 142, the upper electrical conductor 141 is fixedly connected to the circuit board 2, and the number of the upper electrical conductor 141 is two, and the two upper electrical conductors are respectively fixedly connected to the first sampling pin 11 and the second sampling pin 12, and connected to the front trace 31 located on the left side of the circuit board 2, and also located on the upper surface of the circuit board 2, and located in the first through hole 22 and the second through hole 23, respectively; the lower conductor 142 is fixedly connected to the circuit board 2, connected to the back trace 32, located on the lower surface of the circuit board 2, and located in the second through hole 23.
In this embodiment, the shunt 1 includes a section of plate-type sampling resistor 13 made of a high resistivity material, the high resistivity material in this embodiment is manganin, which may be constantan or other materials, two sides of the upper end of the sampling resistor 13 are respectively provided with the first sampling pin 11 and the second sampling pin 12 protruding upward, the first sampling pin 11 and the second sampling pin 12 are respectively connected with the circuit board 2 of the electronic electric energy meter, the upper surface of the circuit board 2 is provided with two rows of the via holes 21 arranged in parallel and respectively uniformly arranged on two sides of the sampling resistor 13, the circuit board 2 is provided with a section of routing surrounding the circuit board 2 with the front surface and the back surface communicated with each other, the front surface routing 31 and the back surface routing 32 are respectively, the front surface routing 31 starts from the first sampling pin 11 and extends into the via hole 21 close to each other, the back trace 32 is located below the circuit board 2 and extends into the opposite via hole 21 to be connected with the front trace 31, the circuit board 2 is provided with two through holes 23 for inserting the first through hole 22 of the first sampling pin 11 and the second through hole 22 for inserting the second sampling pin 12, each through hole comprises the upper conductor 141 and the lower conductor 142, the upper conductor 141 is provided on the front side of the circuit board 2, the lower conductor 142 is provided on the back side of the circuit board 2, the traces of the circuit board 2 surrounding the front side and the back side of the circuit board 2 which are communicated with each other are started from the upper conductor 141 of the first through hole 22 and ended from the lower conductor 142 of the second through hole, and a section of the circuit board 2 is arranged between the first through hole 22 and the second through hole 23 as a medium, the surrounding trace communicated with the front trace 31 and the back trace 32 is similar to a flat ring shape and forms a loop with the sampling resistor disc 13, so that the invention adopts the structure that a section of surrounding trace communicated with the circuit board 2 and taking the circuit board 2 as a medium is arranged on the front surface and the back surface of the circuit board 2 of the electronic electric energy meter, the trace takes the upper conductor 141 of the first through hole 22 on the front surface of the circuit board 2 as a starting point and takes the lower conductor 142 of the second through hole 23 on the back surface of the circuit board 2 as an end point, the first sampling pin 11 and the second sampling pin 12 of the sampling resistor disc 13 are respectively connected with the upper conductor 141 of the first through hole 22 and the second through hole 23 of the circuit board 2, and the space surrounded by the front trace 31 and the back trace 32 is matched with the area of the board surface of the sampling resistor disc 13, therefore, the direction of the induced electromotive force generated by the interference magnetic field in the wiring of the circuit board 2 is opposite to the direction of the induced electromotive force generated by the interference magnetic field in the sampling resistor disc 13, and the induced electromotive force of the interference magnetic field is completely offset.
Example 2:
referring to fig. 1, 2, 3 and 4, the present invention provides an electronic electric energy meter 100 for resisting electromagnetic interference, including a shunt 1, a circuit board 2 and a magnetizing coil 3, wherein the circuit board 2 is fixedly connected to the shunt 1 and is located at an upper end of the shunt 1, the circuit board 2 has a plurality of via holes 21, the via holes 21 are distributed on a surface of the circuit board 2 side by side and are evenly distributed on the left and right, and the magnetizing coil 3 is fixedly connected to the shunt 1, is fixedly connected to the circuit board 2, penetrates through the via holes 21, and is also located on the surface of the circuit board 2; the shunt 1 comprises a first sampling pin 11, a second sampling pin 12 and a sampling resistor disc 13, wherein the first sampling pin 11 is fixedly connected with the circuit board 2, penetrates through the circuit board 2, is close to the via hole 21 positioned on the left side of the circuit board 2, and is also positioned at the end part of a plurality of horizontally arranged via holes 21, the second sampling pin 12 is fixedly connected with the circuit board 2, penetrates through the circuit board 2, is close to the via hole 21 positioned on the right side of the circuit board 2, is also positioned at the end part of the plurality of horizontally arranged via holes 21, is positioned at the same side as the first sampling pin 11, and the sampling resistor disc 13 is fixedly connected with the first sampling pin 11, is fixedly connected with the second sampling pin 12, and is positioned at one end of the first sampling pin 11 far away from the circuit board 2; the magneto coil 3 includes that the line 31 is walked on the front and the line 32 is walked on the back, the line 31 is walked on the front with 2 fixed connection of circuit board to both ends stretch into respectively and are located two of the 2 left and right sides of circuit board in the via hole 21, and quantity is many, arrange in parallel each other in the upper surface of circuit board 2 still is close to the one end of first sample foot 11 with first sample foot 11 is connected, the line 32 is walked on the back with 2 fixed connection of circuit board to both ends stretch into respectively and are located two of the 2 left and right sides of circuit board in the via hole 21, and quantity is many, arrange in parallel each other in the lower surface of circuit board 2 still connects second sample foot 12.
Further, the electronic electric energy meter 100 for resisting electromagnetic interference further comprises a relay 4, wherein the relay 4 is fixedly connected with the shunt 1 and is located on one side, far away from the circuit board 2, of the shunt 1.
Further, the relay 4 comprises a first leading-out terminal 41 and a second leading-out terminal 42, wherein the first leading-out terminal 41 is fixedly connected with the sampling resistance sheet 13 and is positioned on one side, far away from the circuit board 2, of the sampling resistance sheet 13; the second terminal 42 is fixedly connected to the first terminal 41, is located on the surface of the first terminal 41, and extends in a direction away from the first terminal 41.
In this embodiment, the relay 4 is a magnetic latching relay 4, and includes the first terminal 41 extending out of the relay 4 in a direction away from the relay 4, and further includes the second terminal 42 connected to the first terminal 41, the second terminal 42 is parallel to the first terminal 41, the sampling resistor sheet 13 is integrally formed with the first terminal 41 and is embedded in the first terminal 41, so that the first sampling pin 11, the second sampling pin 12, the sampling resistor sheet 13, the first terminal 41 and the second terminal 42 are integrally connected, the relay 4 is operated by a pulse current, and is connected to the shunt 1, thereby achieving an effect of controlling the opening and closing of the circuit.
Example 3:
referring to fig. 1, 2, 3, 4 and 5, the present invention provides an electronic electric energy meter 100 for resisting electromagnetic interference, including a shunt 1, a circuit board 2 and a magneto coil 3, wherein the circuit board 2 is fixedly connected to the shunt 1 and located at an upper end of the shunt 1, the circuit board 2 has a plurality of via holes 21, the via holes 21 are distributed on a surface of the circuit board 2 side by side and are evenly distributed on the left and right, the magneto coil 3 is fixedly connected to the shunt 1 and is fixedly connected to the circuit board 2, penetrates through the via holes 21 and is also located on the surface of the circuit board 2; the shunt 1 comprises a first sampling pin 11, a second sampling pin 12 and a sampling resistor disc 13, wherein the first sampling pin 11 is fixedly connected with the circuit board 2, penetrates through the circuit board 2, is close to the via hole 21 positioned on the left side of the circuit board 2, and is also positioned at the end part of a plurality of horizontally arranged via holes 21, the second sampling pin 12 is fixedly connected with the circuit board 2, penetrates through the circuit board 2, is close to the via hole 21 positioned on the right side of the circuit board 2, is also positioned at the end part of the plurality of horizontally arranged via holes 21, is positioned at the same side as the first sampling pin 11, and the sampling resistor disc 13 is fixedly connected with the first sampling pin 11, is fixedly connected with the second sampling pin 12, and is positioned at one end of the first sampling pin 11 far away from the circuit board 2; the magneto coil 3 includes that the line 31 is walked on the front and the line 32 is walked on the back, the line 31 is walked on the front with 2 fixed connection of circuit board to both ends stretch into respectively and are located two of the 2 left and right sides of circuit board in the via hole 21, and quantity is many, arrange in parallel each other in the upper surface of circuit board 2 still is close to the one end of first sample foot 11 with first sample foot 11 is connected, the line 32 is walked on the back with 2 fixed connection of circuit board to both ends stretch into respectively and are located two of the 2 left and right sides of circuit board in the via hole 21, and quantity is many, arrange in parallel each other in the lower surface of circuit board 2 still connects second sample foot 12.
Further, the electronic electric energy meter 100 for resisting electromagnetic interference further includes a housing 5 and a cover plate 6, the housing 5 is fixedly connected with the circuit board 2, fixedly connected with the relay 4, and arranged to surround the outer side of the circuit board 2 and the outer side of the relay 4, the housing 5 has an opening 51, and the opening 51 is located on the upper surface of the housing 5 and faces the circuit board 2; the cover plate 6 is rotatably connected to the housing 5 and covers the opening 51.
Further, the cover plate 6 has heat dissipation holes 61, and the heat dissipation holes 61 penetrate through the cover plate 6 and face the circuit board 2.
In this embodiment, the housing 5 is a rectangular housing 5, which is hollow, and fixes the shunt 1, the relay 4 and the circuit board 2 inside the housing 5, the cover plate 6 is rotatably connected to the housing 5 via a rotating shaft, the cover plate can be clamped with the cover plate 6, the shell 5 is made of carbon fiber material and has good electromagnetic wave reflection effect, the outer surface of the shell 5 is plated with a nickel layer, the anti-electromagnetic interference of the shell 5 and the cover plate 6 can be enhanced, the cover plate 6 is transparent organic glass, the outer surface of the cover plate is provided with an indium tin oxide foil film, the thickness of the cover plate is 1000nm, the cover plate is transparent and anti-electromagnetic interference, the heat dissipation hole 61 penetrates through the cover plate 6 and faces the direction of the circuit board 2, so that heat inside the shell 5 can be volatilized outwards through the heat dissipation hole 61, and the working stability of the electric energy meter is guaranteed.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. An electronic electric energy meter for resisting electromagnetic interference, which is characterized in that,
the magnetic shunt comprises a shunt, a circuit board and a magnetic generating coil, wherein the circuit board is fixedly connected with the shunt and is positioned at the upper end of the shunt, the circuit board is provided with a plurality of through holes, the through holes are distributed on the surface of the circuit board side by side and are uniformly distributed on the left and right, and the magnetic generating coil is fixedly connected with the shunt, is fixedly connected with the circuit board, penetrates through the through holes and is also positioned on the surface of the circuit board;
the shunt comprises a first sampling pin, a second sampling pin and a sampling resistor disc, wherein the first sampling pin is fixedly connected with the circuit board, penetrates through the circuit board, is close to the via hole on the left side of the circuit board, and is also located at the end part of the via holes which are horizontally arranged;
the magnetism generating coil comprises a front wiring and a back wiring, the front wiring is fixedly connected with the circuit board, two ends of the front wiring extend into the two sides of the circuit board respectively, the two ends of the front wiring are located in the through holes, the number of the front wiring is multiple, the front wiring is arranged on the upper surface of the circuit board in parallel, one end of the first sampling pin is close to the first sampling pin, the back wiring is fixedly connected with the circuit board, the two ends of the back wiring are located in the two sides of the circuit board, the two ends of the back wiring are arranged in the through holes, the number of the back wiring is multiple, the two ends of the back wiring are arranged on the lower surface of the circuit board in parallel, and.
2. The electronic power meter for electromagnetic interference resistance according to claim 1,
the circuit board is provided with a first through hole and a second through hole, the first through hole is sleeved with the first sampling pin and is close to the via hole positioned on the left side of the circuit board, and the second through hole is sleeved with the second sampling pin and is close to the via hole positioned on the right side of the circuit board; the shunt also comprises an electric connector, the electric connector is fixedly connected with the circuit board, the number of the electric connector is two, the electric connector is respectively fixedly connected with the first sampling pin and the second sampling pin, and the electric connector is respectively positioned in the first through hole and the second through hole.
3. The electronic power meter for electromagnetic interference resistance according to claim 2,
the electric connector comprises an upper electric conductor and two lower electric conductors, the upper electric conductors are fixedly connected with the circuit board, are respectively and fixedly connected with the first sampling pin and the second sampling pin, are connected with the front routing on the left side of the circuit board, are also positioned on the upper surface of the circuit board and are respectively positioned in the first through hole and the second through hole; the lower conductor is fixedly connected with the circuit board, connected with the back wiring, positioned on the lower surface of the circuit board and positioned in the second through hole.
4. The electronic power meter for electromagnetic interference resistance according to claim 1,
the electronic electric energy meter for resisting electromagnetic interference further comprises a relay, wherein the relay is fixedly connected with the shunt and is positioned on one side of the circuit board far away from the shunt.
5. The electronic power meter for electromagnetic interference resistance according to claim 4,
the relay comprises a first leading-out end and a second leading-out end, the first leading-out end is fixedly connected with the sampling resistance chip and is positioned on one side, far away from the circuit board, of the sampling resistance chip; the second leading-out end is fixedly connected with the first leading-out end, is positioned on the surface of the first leading-out end and extends towards the direction far away from the first leading-out end.
6. The electronic power meter for electromagnetic interference resistance according to claim 5,
the electronic electric energy meter for resisting electromagnetic interference further comprises a shell and a cover plate, wherein the shell is fixedly connected with the circuit board, fixedly connected with the relay, arranged around the outer side of the circuit board and arranged around the outer side of the relay, and provided with an opening, and the opening is positioned on the upper surface of the shell and faces the circuit board; the cover plate is rotatably connected with the shell and covers the opening.
7. The electronic power meter for electromagnetic interference resistance according to claim 6,
the cover plate is provided with heat dissipation holes, and the heat dissipation holes penetrate through the cover plate and face the circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910789863.4A CN110702956A (en) | 2019-08-26 | 2019-08-26 | Electronic electric energy meter for resisting electromagnetic interference |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910789863.4A CN110702956A (en) | 2019-08-26 | 2019-08-26 | Electronic electric energy meter for resisting electromagnetic interference |
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| CN110702956A true CN110702956A (en) | 2020-01-17 |
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| CN201910789863.4A Pending CN110702956A (en) | 2019-08-26 | 2019-08-26 | Electronic electric energy meter for resisting electromagnetic interference |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111089991A (en) * | 2020-02-10 | 2020-05-01 | 华立科技股份有限公司 | Electric energy metering method and device and electric energy meter |
| CN112255436A (en) * | 2020-09-30 | 2021-01-22 | 深圳市航天泰瑞捷电子有限公司 | Wiring method of manganese-copper shunt, PCB (printed circuit board), circuit board and electric energy meter |
| WO2021169456A1 (en) * | 2020-02-28 | 2021-09-02 | 浙江永泰隆电子股份有限公司 | Shunt lead structure, electric power instrument and method for manufacturing shunt lead structure |
| WO2023125625A1 (en) * | 2021-12-30 | 2023-07-06 | 厦门宏发电力电器有限公司 | Electromagnetic relay capable of performing measurement, and electronic electricity meter comprising same |
-
2019
- 2019-08-26 CN CN201910789863.4A patent/CN110702956A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111089991A (en) * | 2020-02-10 | 2020-05-01 | 华立科技股份有限公司 | Electric energy metering method and device and electric energy meter |
| WO2021169456A1 (en) * | 2020-02-28 | 2021-09-02 | 浙江永泰隆电子股份有限公司 | Shunt lead structure, electric power instrument and method for manufacturing shunt lead structure |
| CN112255436A (en) * | 2020-09-30 | 2021-01-22 | 深圳市航天泰瑞捷电子有限公司 | Wiring method of manganese-copper shunt, PCB (printed circuit board), circuit board and electric energy meter |
| CN112255436B (en) * | 2020-09-30 | 2024-04-02 | 深圳市航天泰瑞捷电子有限公司 | Wiring method of manganese-copper shunt, PCB, circuit board and electric energy meter |
| WO2023125625A1 (en) * | 2021-12-30 | 2023-07-06 | 厦门宏发电力电器有限公司 | Electromagnetic relay capable of performing measurement, and electronic electricity meter comprising same |
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