CN110086507A - Interface circuit and its application - Google Patents
Interface circuit and its application Download PDFInfo
- Publication number
- CN110086507A CN110086507A CN201910201532.4A CN201910201532A CN110086507A CN 110086507 A CN110086507 A CN 110086507A CN 201910201532 A CN201910201532 A CN 201910201532A CN 110086507 A CN110086507 A CN 110086507A
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- China
- Prior art keywords
- circuit
- power line
- interface
- connect
- carrier communication
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- 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.)
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/56—Circuits for coupling, blocking, or by-passing of signals
Abstract
The invention discloses a kind of interface circuit and its applications; wherein; interface circuit; it include: ontology processing module; it includes coupling circuit, and one end of coupling circuit is connect with the first power line and the second power line, and the other end of coupling circuit is connect with socket; alternating current forceful electric power of the coupling circuit for the carrier signal of power grid to be coupled to internal circuit, the carrier signal of internal circuit is coupled in power grid, removes low frequency, and protection internal circuit；Power Line Carrier Communication Module comprising plug, plug is matched with socket constitutes plug connector.The interface of ontology processing module and Power Line Carrier Communication Module of the present invention, has no forceful electric power signal, therefore, effective to reduce carrier path area, so that carrier communication is influenced to be effectively reduced by space electromagnetic noise；In addition, no setting is required forceful electric power interface, simplifies physical interface；Then, interface plug operation is safer；Finally, Power Line Carrier Communication Module needed for replacement or selection is more convenient, user experience degree is improved.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of interface circuit and its applications.
Background technique
Power line carrier communication industry is flourishing in recent years, there is various power line carrier communication platforms
Scheme also has numerous application designers, there is the gesture let a hundred schools contend greatly.One system of various schemes and application product self-contained, mutually it
Between be difficult to be compatible with.But power line carrier communication, a kind of only communication mode, is to need just have in conjunction with other application after all
With.But because power line carrier communication different platform scheme is difficult to be compatible between each other, if power line carrier communication completely with answer
Being bound together with product cannot separate, then has more preferably power line carrier communication scheme, apply this more preferably electric power
Line carrier communication scheme must then discard original entire product completely.
In order to solve the technical problem, modular power line carrier communication scheme is come into being.But it is provided with electric power
The electronic equipment internal of line carrier communication module is equipped with a variety of electromagnetic devices, the leakage field of the electromagnetic device, transition high current meeting
Larger magnetic field B is formed, at the same time, existing Power Line Carrier Communication Module includes forceful electric power interface, since forceful electric power voltage is high, institute
Enough safe distances (that is: creepage distance and space insulation distance) is needed, to form biggish sensitive surface S, Jin Ergen
According toAnd the induced potential U that space electromagnetic noise generates is the rate of change of inductive loop magnetic flux phi, can be obtained
Notify and generate biggish induced potential, so that there are the skills of anti-space electromagnetic noise jamming performance difference for the interface module of electronic equipment
Art problem.
Summary of the invention
The purpose of the present invention is to provide a kind of interface circuit and its applications, to solve existing carrier communication electronic equipment
Anti- space electromagnetic noise jamming performance difference technical problem.
To solve the above-mentioned problems, the present invention provides a kind of interface circuits comprising:
Ontology processing module comprising coupling circuit, one end of coupling circuit and the first power line and the second power line connect
Connect, the other end of coupling circuit is connect with socket, coupling circuit be used for by the carrier signal of power grid be coupled to internal circuit, will in
The alternating current forceful electric power that the carrier signal of portion's circuit is coupled to power grid, removes low frequency, and protection internal circuit；
Power Line Carrier Communication Module comprising plug, plug is matched with socket constitutes plug connector.
As a further improvement of the present invention, coupling circuit include:
Capacitor, one end are connect with the first power line；
Coupling transformer comprising primary coil and secondary coil, primary coil one end is connect with the second power line, another
End is connect with capacitor, and secondary coil is connect with socket.
As a further improvement of the present invention, plug connector includes row's needle connector, bus bar connector, coaxial cable connector
Or shielded cable connector.
To solve the above-mentioned problems, the present invention also provides a kind of application of interface circuit, interface circuit is mainly used in
The electronic equipment that ontology processing module and Power Line Carrier Communication Module are independently arranged.
As a further improvement of the present invention, electronic equipment includes electric energy meter, collector and concentrator.
Compared with prior art, firstly, coupling circuit are set in ontology processing module by the present invention, therefore, at ontology
The interface for managing module and Power Line Carrier Communication Module, has no forceful electric power signal, thus ontology processing module and power line carrier
Row's needle spacing of communication module interface can be set narrower, and then effectively reduce carrier path area, thus carrier communication by
The influence of space electromagnetic noise is effectively reduced.Secondly, the interface of ontology processing module and Power Line Carrier Communication Module, has no
Forceful electric power signal without forceful electric power interface is arranged, and then simplifies the object of ontology processing module and Power Line Carrier Communication Module
Manage interface.Again, the interface of ontology processing module and Power Line Carrier Communication Module has no forceful electric power signal, therefore, at ontology
The interface plug operation for managing module and Power Line Carrier Communication Module is safer, to improve operational safety.Finally, this case
Ontology processing module, Power Line Carrier Communication Module be independently arranged, therefore, can according to user demand replace or select needed for
Power Line Carrier Communication Module, improve user experience degree.
Detailed description of the invention
Fig. 1 is the functional block diagram of interface circuit one embodiment of the present invention；
Fig. 2 is the electrical block diagram of interface circuit one embodiment of the present invention；
Fig. 3 is the Switching Power Supply schematic diagram of single-phase electric energy meter；
The high current that the transformer secondary output that Fig. 4 illustrates switching power circuit comes out is closed at a distance from existing interface circuit
It is schematic diagram；
The high current that the transformer secondary output that Fig. 5 illustrates switching power circuit comes out is closed at a distance from the interface circuit of this case
It is schematic diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, is clearly and completely retouched to the technical solution in embodiment
It states, similar reference numerals represent similar component in attached drawing.Obviously, will be described below embodiment is only the present invention one
Divide embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
Every other embodiment obtained, shall fall within the protection scope of the present invention under the premise of creative work.
Fig. 1-Fig. 2 illustrates one embodiment of interface circuit of the present invention.In the present embodiment, as shown in Figure 1, the interface
Circuit includes ontology processing module 1 and Power Line Carrier Communication Module 2.
Wherein, ontology processing module 1 includes coupling circuit 10, one end of coupling circuit 10 and the first power line and the second electricity
Line of force connection, the other end of coupling circuit 10 are connect with socket 11, and coupling circuit are used to for the carrier signal of power grid being coupled to interior
Portion's circuit, the alternating current forceful electric power for coupling the carrier signal of internal circuit in power grid, removing low frequency, and protection internal circuit.Electric power
Line carrier communication module 2 includes plug 20, and plug 20 is matched with socket 11 constitutes plug connector.In the present embodiment, first electricity
The line of force can be zero curve, or firewire, user can be configured according to self-demand.In the present embodiment, this second
Power line can be zero curve, or firewire, user can be configured according to self-demand.
On the basis of the present embodiment, in other embodiments, plug connector includes but is not limited to arrange needle connector, winding displacement connection
Device, coaxial cable connector or shielded cable connector.
On the basis of the present embodiment, in other embodiments, referring to fig. 2, coupling circuit 10 include 100 He of coupling transformer
Capacitor 101.
Wherein, capacitor 101, one end are connect with the first power line.In the present embodiment, which can be
Zero curve, or firewire, user can be configured according to self-demand.
Coupling transformer 100 comprising primary coil and secondary coil, primary coil one end are connect with the second power line,
The other end is connect with capacitor 101, and secondary coil is connect with socket 11.In the present embodiment, which can be zero
Line, or firewire, user can be configured according to self-demand.
Effective effect of the invention are as follows: firstly, coupling circuit are set in ontology processing module by the present invention, therefore, this
The interface of body processing module and Power Line Carrier Communication Module has no forceful electric power signal, thus ontology processing module and power line
Row's needle spacing of carrier communication module interface can be set narrower, and then effectively reduce carrier path area, so that carrier wave is logical
Letter is influenced to be effectively reduced by space electromagnetic noise.Secondly, the interface of ontology processing module and Power Line Carrier Communication Module,
Forceful electric power signal is had no, without forceful electric power interface is arranged, and then simplifies ontology processing module and Power Line Carrier Communication Module
Physical interface.Again, the interface of ontology processing module and Power Line Carrier Communication Module has no forceful electric power signal, therefore, this
The plug operation of the interface of body processing module and Power Line Carrier Communication Module is safer, to improve operational safety.Finally,
The ontology processing module, Power Line Carrier Communication Module of this case are independently arranged, and therefore, can be replaced or be selected according to user demand
Required Power Line Carrier Communication Module improves user experience degree.
Due to the present embodiment interface circuit have above advantages, by its be applied to ontology processing module with
When the electronic equipment that Power Line Carrier Communication Module is independently arranged, so that the electronic equipment containing the present embodiment interface circuit also has
Standby above advantages.
Further, in this embodiment electronic equipment include but is not limited to electric energy meter, collector and concentrator.
For technical solution of the present invention detailed further, by taking electronic equipment electric energy meter as an example, Binding experiment data pair
Effect the comparing property specification of this case.
The Switching Power Supply schematic diagram of single-phase electric energy meter is illustrated referring to Fig. 3, Fig. 3.
As shown in figure 3, U1 switching power source chip is the TNY278P of PI Corp., the capacitor of BP/M foot connection is 10uF, core
Piece work is current limit extension mode (Increased Current Limit), and typical current limit is 0.65A.?
That is nearly constant DC voltage on capacitor E1, for the alternating current of 220V, the DC voltage is about when the DS of U1 conducting
For 310V, it is added on transformer T1 armature winding N12, forms the electric current of variation.The electric current of the variation produces on armature winding N12
Raw induced electromotive force is equal to the voltage on E1.And the induced electromotive force generated on the secondary winding is reversely added in diode D3
On, secondary current cannot be formed.Therefore, during the DS conducting of U1, T1 is equivalent to an inductance, and inductance is the first of T1 transformer
The self-inductance of grade winding, wherein the L12=600uH of armature winding N12=116T, T1 the secondary windings N34=14T, T1 of T1,
L34=L12*Power (N34,2)/Power (N12,2)=8.74uH.Then the electric current in armature winding is linearly increasing to
0.65A, time t usedONAre as follows:
When flowing through the electric current of transformer T1 armature winding N12, that is, the electric current of the DS of U1 is flowed through, reaches current limit
When, the DS of U1 automatically shuts down cut-off, and the current break in transformer T1 armature winding N12 is 0.Theoretically the mutation is moment hair
Raw, still there is certain time process in practice, only the time can be much smaller than tON, 10ns might as well be assumed to.
For transformer, the electric current in each winding can mutate, but the magnetic flux in the magnetic core of transformer will not be sent out
Raw mutation, so that
In above formula:
Magnetic flux in the magnetic core of Φ: U1 DS cut-off front and back moment transformer T1；
·I12MAX: the electric current before the DS of U1 ends in moment transformer T1 armature winding N12；
·I34MAX: the electric current after the DS cut-off of U1 in moment transformer T1 secondary windings N34；
μ: for the magnetic conductivity of the magnetic core of transformer T1；
S: for the core cross section product of transformer T1
L: for the magnetic core length of magnetic path of transformer T1
It can thus be concluded that:
As shown in figure 4, high current and existing interface electricity that the transformer secondary output that Fig. 4 illustrates switching power circuit comes out
The distance relation schematic diagram on road.
Where it is assumed that the distance of the row's needle of the high current that the distance transformer secondary output comes out in existing interface circuit recently
Are as follows: 50mm, arranging the spacing between needle is 7.62mm, width 2.54mm.
Had by Ampere circuit law:
H2 π x=I；
And B=μ H, d Φ=BdS, dS=0.00254dx, therefore,
Therefore, the induced potential which generates are as follows:
Therefore, the induced potential U=38.8mv that existing interface circuit processing generates.
Further, attenuation capacitor and coupling transformer are set to ontology processing module, therefore, ontology by the present embodiment
The interface of processing module and Power Line Carrier Communication Module has no forceful electric power signal, so that ontology processing module and power line carry
Row's needle spacing of wave communication module interface can be set narrower.
Participate in Fig. 5, the interface circuit of high current and this case that the transformer secondary output that Fig. 5 illustrates switching power circuit comes out
Distance relation schematic diagram.
Where it is assumed that the distance of the row's needle of the high current that the distance transformer secondary output comes out in this case interface circuit recently
Are as follows: 50mm, arranging the spacing between needle is 2.54mm, width 2.54mm.
Had by Ampere circuit law:
H2 π x=I；
And B=μ H, d Φ=BdS, dS=0.00254dx, therefore,
Therefore, the induced potential which generates are as follows:
Shown in sum up, the induced potential that existing interface circuit generates is 38.8mV, and what the interface circuit of this case generated
Induced potential is 13.5mV, therefore, the induced potential that the induced potential that the present embodiment generates only has existing interface circuit to generate
1/3, so that effectively reduce carrier communication is influenced by space electromagnetic noise.
The specific embodiment of invention is described in detail above, but it is only used as example, the present invention is not intended to limit
With specific embodiments described above.For a person skilled in the art, any equivalent modifications that the invention is carried out
Or substitute also all among scope of the invention, therefore, the made equalization in the case where not departing from the spirit and principles in the present invention range
Transformation and modification, improvement etc., all should be contained within the scope of the invention.
Claims (5)
1. a kind of interface circuit, characterized in that it comprises:
Ontology processing module comprising coupling circuit, one end of the coupling circuit and the first power line and the second power line connect
It connects, the other end of the coupling circuit is connect with socket, and the coupling circuit are used to the carrier signal of power grid being coupled to inside
Circuit, the alternating current forceful electric power for coupling the carrier signal of the internal circuit in the power grid, removing low frequency, and the protection inside
Circuit；
Power Line Carrier Communication Module comprising plug, the plug is matched with the socket constitutes plug connector.
2. interface circuit according to claim 1, which is characterized in that the coupling circuit include:
Capacitor, one end are connect with first power line；
Coupling transformer comprising primary coil and secondary coil, described primary coil one end are connect with second power line,
The other end is connect with the capacitor, and the secondary coil is connect with the socket.
3. interface circuit according to claim 1, which is characterized in that the plug connector includes row's needle connector, winding displacement company
Connect device, coaxial cable connector or shielded cable connector.
4. a kind of application of interface circuit, which is characterized in that the interface circuit is mainly used in ontology processing module and electric power
The electronic equipment that line carrier communication module is independently arranged.
5. the application of interface circuit according to claim 4, which is characterized in that the electronic equipment includes electric energy meter, adopts
Storage and concentrator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910201532.4A CN110086507A (en) | 2019-03-15 | 2019-03-15 | Interface circuit and its application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910201532.4A CN110086507A (en) | 2019-03-15 | 2019-03-15 | Interface circuit and its application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110086507A true CN110086507A (en) | 2019-08-02 |
Family
ID=67413245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910201532.4A Pending CN110086507A (en) | 2019-03-15 | 2019-03-15 | Interface circuit and its application |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070206629A1 (en) * | 2006-03-03 | 2007-09-06 | Lite-On Technology Corp. | Network Equipment Applied In Power Line Carrier Communication System |
| CN102468869A (en) * | 2010-11-18 | 2012-05-23 | 上海芯域微电子有限公司 | Power line carrier communication terminal device capable of enhancing anti-jamming capability and safety |
| CN106571853A (en) * | 2016-08-29 | 2017-04-19 | 广东万和新电气股份有限公司 | Power line carrier communication-based control terminal |
| CN107276635A (en) * | 2017-08-22 | 2017-10-20 | 北京智芯微电子科技有限公司 | A kind of carrier communication module of concentrator |
| CN108023614A (en) * | 2017-12-15 | 2018-05-11 | 国网江苏省电力有限公司电力科学研究院 | Low-voltage powerline carrier communication device and power information acquisition system and acquisition method |
| CN109039377A (en) * | 2018-08-10 | 2018-12-18 | 溧阳市华鹏电力仪表有限公司 | High speed power line carrier communication module and its working method, electric energy meter |
-
2019
- 2019-03-15 CN CN201910201532.4A patent/CN110086507A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070206629A1 (en) * | 2006-03-03 | 2007-09-06 | Lite-On Technology Corp. | Network Equipment Applied In Power Line Carrier Communication System |
| CN102468869A (en) * | 2010-11-18 | 2012-05-23 | 上海芯域微电子有限公司 | Power line carrier communication terminal device capable of enhancing anti-jamming capability and safety |
| CN106571853A (en) * | 2016-08-29 | 2017-04-19 | 广东万和新电气股份有限公司 | Power line carrier communication-based control terminal |
| CN107276635A (en) * | 2017-08-22 | 2017-10-20 | 北京智芯微电子科技有限公司 | A kind of carrier communication module of concentrator |
| CN108023614A (en) * | 2017-12-15 | 2018-05-11 | 国网江苏省电力有限公司电力科学研究院 | Low-voltage powerline carrier communication device and power information acquisition system and acquisition method |
| CN109039377A (en) * | 2018-08-10 | 2018-12-18 | 溧阳市华鹏电力仪表有限公司 | High speed power line carrier communication module and its working method, electric energy meter |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200214 Address after: 518000 floor 14, Kelu building, Baoshen Road, songpingshan community, Xili street, Nanshan District, Shenzhen City, Guangdong Province Applicant after: Kelu International Technology Co.,Ltd. Address before: 518000 A6 2A, Guangming Science Park, 3009 China Merchants Road, Guangming Road, Guangming District, Guangdong, Shenzhen Applicant before: Shenzhen Clou Electronics Co.,Ltd. |
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190802 |