CN2742682Y - Electric inductive coupling device for power high speed data communication system - Google Patents
Electric inductive coupling device for power high speed data communication system Download PDFInfo
- Publication number
- CN2742682Y CN2742682Y CN 200420001818 CN200420001818U CN2742682Y CN 2742682 Y CN2742682 Y CN 2742682Y CN 200420001818 CN200420001818 CN 200420001818 CN 200420001818 U CN200420001818 U CN 200420001818U CN 2742682 Y CN2742682 Y CN 2742682Y
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- coupling device
- power line
- magnetic core
- line
- inductance coupling
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Abstract
The utility model discloses an electric inductive coupling device for power line high speed data communication system. Wherein, the coupling device contains a signal transmission transformer(T1), and a power line conductor(1) serves as primary coil, and a high-frequency carrier signal line(2) serves as auxiliary coil, and the magnetic core with high permeability serves as coupling magnetic core. The utility model realizes the effective electromagnetic induction coupling of the high-frequency carrier signal and the power line path, and meanwhile, realizes the security isolation of the communication circuit(power line high rate data communication equipment) and the strong electric power line, and has the advantage of simple and convenient field use.
Description
Technical field
The utility model relates to the electron and electrician device, is specifically related to realize at the electricity distribution power net power line channel coupling device of high-speed data communication.
Background technology
The transmission that utilizes power line to carry out voice-and-data has the history of decades, but all is the low speed voice communications versus data communications in the medium and low frequency scope.Along with the development of information technology and the arrival of information age, people to the demand of high-speed data service also in continuous growth.In numerous alternative data access, utilize existing electricity distribution power circuit as the carrier transmitting high speed data, have remarkable advantages undoubtedly.
In the last few years, the research in high speed power line communication technology and application facet both at home and abroad made significant progress, and existing several high speed power line communication systems and end product thereof are at home and abroad tried out.
The power line coupling device is a very important link in power line high speed carrier communication system, and safety, efficient, an easy high-frequency carrier signal coupling device are the keys that realizes the power line high-speed communication.The power line coupling device is accompanied by the application of power line carrier communication and the history that development has decades, but, in traditional mesohigh PLC communication system, mainly be based on point-to-point low speed transmissions, carrier frequency is in 500KHz, the carrier channel impedance is basicly stable, and its design and application technology are ripe and perfect.Yet, the carrier frequency that the power line carrier communication of transmitting high speed data uses on the power distribution network power circuit is up to 38MHz, data rate has also arrived 200Mbps, be mainly used in the access of transmission, last kilometer of the Internet of distribution network automated data and intelligent domestic system network etc., this is different from traditional PLC communication system fully.
On the other hand, realize high-speed wideband communication, must adopt complicated communication modulating technology and coding techniques, same, to having higher requirement as the coupling device of carrier signal input and output.As: the linearity of transmission characteristic in broad frequency range, low time delay and phase-shift characterisitc are to adapt to from the high speed data transfer of hundreds of Kbps to tens Mbps; Low transmission attenuation and on the low-impedance load circuit high coupling efficiency, be vital to the raising of communication performance; Equally, because coupling device directly is connected with high-voltage power line, fail safe also is the aspect that will consider.Like this, effectively the development of power line high-speed communication coupled modes and Design of device thereof is an important content realizing high speed power line communication.
The utility model content
The technical problems to be solved in the utility model provides the coupling device of a kind of non-direct contact type high-frequency carrier signal and power line, this coupling device is installed on the power line (insulated conductor), as the magnetic core of electromagnetic induction, realized the effective electromagnetic induction coupling of high-frequency carrier signal and power line passage; Also realized simultaneously the safety isolation of telecommunication circuit (high speed power line communication equipment) with the forceful electric power power line; Have on-the-spot advantage easy to use, certain uniqueness is arranged.
According to the utility model, a kind of inductance coupling device that is used for the high speed power line communication system is provided, and wherein this coupling device comprises: the signal transmission transformer, with power line conductor as primary coil, the high-frequency carrier signal line is as secondary coil, and the magnetic core of high permeability is as the coupling magnetic core.
Inductance coupling device of the present utility model is different from general power line carrier capacitive coupling device, it is a kind of indirect coupling device, can satisfy the broadband coupling of high-frequency signal in 2～40MHz scope, have lower pass band damping and suitable resistance property, its characteristics mainly show following some:
1. the signal of broad frequency range coupling.Through special magnetic core material and the processing technology of selecting for use, proved conclusively the good magnetic parameter of toroidal core, can satisfy effective coupling of high-frequency carrier signal in the broad frequency range from 2MHz to 40MHz.
2. lower pass band damping.The insertion of high-frequency carrier signal decay-4 ± 2dB in the passband scope from 2MHz to 40MHz, and low-frequency interference signal is had very high insertion decay, stop it to enter telecommunication circuit.
3. good impedance setting in the broad frequency range.This utility model device is designed to 20～50 Ω impedances input, and is by increasing or reducing the setting function that the secondary coil number of turn realizes impedance, simple.Same such impedance setting function is to realize in very wide frequency band range, wants wide a lot of than arrowband coupler and other network carrier impedance setting device frequency range.
4. in addition, this utility model device filter network favorable linearity is a frequency characteristic and a low delay character mutually, has satisfied the requirement of high-speed wideband communication to coupling device frequency plot characteristic substantially.
5. install reliable security performance.Inductance coupling device wants simple many than capacitive coupling device from the principle to the circuit design, on the other hand, based on transformer-coupled principle, itself has had buffer action; Inductance coupling high belongs to a kind of contactless coupling, and the low-voltage signal line directly is not connected with power line, good insulating, and safety has been guaranteed the fail safe and the reliability of installing.
Description of drawings
Below in conjunction with accompanying drawing and practical example the utility model is elaborated.
Fig. 1 is the transformer equivalent schematic diagram of inductance coupling device;
Fig. 2 is the schematic diagram of installing and using of inductance coupling device;
Fig. 3 is the top view of split type magnetic core;
Fig. 4 is the end view of split type magnetic core; And
Fig. 5 is the cutaway view of split type magnetic core.
Embodiment
Now, specifically describe the inductance coupling device that is used for high speed power line communication of the present utility model with reference to the accompanying drawings, in the accompanying drawings, same or analogous Reference numeral is represented same or analogous parts.
With reference to the accompanying drawings 1, inductance coupling device of the present utility model is a kind of contactless electromagnetic induction coupling device, it is based on transformer-coupled principle, with the phase line (coil) of power line conductor 1 as primary coil, and with high-frequency carrier signal line 2 as secondary coil, the magnetic core by a high permeability has constituted a signal transmission transformer T1.
In accompanying drawing 1, be current source 3 in the secondary with the modulation equipment signal source equivalence of high-frequency signal line 2, the variation of this current source signal can be gone to the power circuit of former limit by electromagnetic induction (electromagnetic coupled); Otherwise the variation of the high-frequency signal on the power circuit of former limit also can be sensed on the high-frequency signal line of secondary, and is received by modulation equipment.
The degree and the selected magnetic core relation of above-mentioned former limit and the coupling of secondary loop signal are very big.Can adopt split type ferrite bead for this reason, be made into the ferrite bead of two semicircle cartridge types, during use by plastic casing fastening and with power line and high-frequency signal wire clamp in the centre, thereby constitute a complete inductance coupling device.
Accompanying drawing 2 is the schematic diagram of installing and using of the utility model inductance coupling device.This device is applied in distribution ammeter chamber usually as the signal coupling of data terminal equipment (modulation equipment) with power line.In the figure, the phase line 12 of power line conductor is arranged on annular coupling magnetic core 10 centres with high-frequency signal line 2 respectively with zero line 13, and at an end relative with the high-frequency signal port of modem device two high-frequency signal lines are connected to constitute complete loops with connector lugs 11, constitute inductance coupling device thus.
Fig. 3, Fig. 4 and Fig. 5 show top view end view and the profile that adopts split type annular coupling magnetic core respectively, magnetic core wherein comprises that ferrite constitutes the ferrite bead of two semicircle cartridge types, i.e. first magnet ring 25 and second magnet ring 26, one side of first and second magnet rings links to each other by link 23, its opposite side gets final product simple and convenient and safety with first and second magnet rings 25 and 26 fix in position so that the high-frequency signal line is clipped in two magnet rings with power line (phase line and zero line are respectively) by clip 24 when using thus.Plastic casing 21 surrounds around the magnetic core, in the example of magnetic core shown in the accompanying drawing, and A=30mm, B=32mm, C=30mm.Although adopt split type annular coupling magnetic core in this example, the utility model is not limit therewith, and those of ordinary skills it is contemplated that the magnetic core of other concrete form fully, just can as long as power line and high-frequency signal line be arranged in the magnetic core.
In addition, inductance coupling device of the present utility model also can be implemented with other form, for example, many phase lines of power line conductor 1 can be clipped in corresponding a plurality of annular coupling magnetic cores 10 centres with high-frequency signal line 2 respectively, and corresponding high-frequency signal line is connected in series to constitute complete loops, perhaps also can be only phase line of power line conductor 1 and high-frequency signal line 2 be clipped in the middle of the annular coupling magnetic core 10, and need not be also zero line or other phase line and high-frequency signal line 2 be clipped in the middle of the annular coupling magnetic core 10, as long as constitute complete loops.For fear of being repeated in this description, save detailed description at this.
Although the utility model is described; but foregoing description just for illustrative purposes; the utility model is not limited to above-mentioned specific descriptions in conjunction with the accompanying drawings; those of ordinary skills can not break away from the various changes of the utility model spirit to it, and protection range of the present utility model is limited by the accompanying Claim book.
Claims (7)
1, a kind of inductance coupling device that is used for the high speed power line communication system is characterized in that this coupling device comprises:
Signal transmission transformer (T1), as primary coil, high-frequency carrier signal line (2) is as secondary coil with the phase line (12) of power line conductor (1), and the magnetic core of high permeability is as the coupling magnetic core.
2. inductance coupling device as claimed in claim 1 is characterized in that
The phase line (12) of power line conductor (1) and zero line (13) respectively and corresponding high-frequency signal line (2) be arranged in the middle of the coupling magnetic core (10), corresponding high-frequency signal line is connected in series.
3. inductance coupling device as claimed in claim 1 is characterized in that
Every phase line in many phase lines of power line conductor (1) respectively and corresponding high-frequency signal line (2) be arranged in the middle of corresponding a plurality of annular coupling magnetic cores (10), corresponding high-frequency signal line is connected in series.
4. as each described inductance coupling device among the claim 1-3, it is characterized in that described coupling magnetic core is split type ferrite bead.
5. inductance coupling device as claimed in claim 4, it is characterized in that described ferrite bead is the ferrite bead of two semicircle cartridge types, the one side connects by link (23), and opposite side constitutes inductance coupling device with power line and high-frequency signal wire clamp in the centre by clip (24) during use.
6. as each described inductance coupling device among the claim 1-3, it is characterized in that the impedance of described inductance coupling device is input as 20～50 Ω.
7. as each described inductance coupling device among the claim 1-3, it is characterized in that realizing adjusting of impedance by increasing or reduce the secondary coil number of turn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420001818 CN2742682Y (en) | 2004-01-06 | 2004-01-06 | Electric inductive coupling device for power high speed data communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420001818 CN2742682Y (en) | 2004-01-06 | 2004-01-06 | Electric inductive coupling device for power high speed data communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2742682Y true CN2742682Y (en) | 2005-11-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420001818 Expired - Lifetime CN2742682Y (en) | 2004-01-06 | 2004-01-06 | Electric inductive coupling device for power high speed data communication system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2742682Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101971334B (en) * | 2008-02-25 | 2012-12-26 | Tivo有限公司 | Stackable communications system |
| CN106506048A (en) * | 2016-11-11 | 2017-03-15 | 上海欣影电力科技股份有限公司 | A kind of carrier communication termination power based on inductive |
-
2004
- 2004-01-06 CN CN 200420001818 patent/CN2742682Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101971334B (en) * | 2008-02-25 | 2012-12-26 | Tivo有限公司 | Stackable communications system |
| CN106506048A (en) * | 2016-11-11 | 2017-03-15 | 上海欣影电力科技股份有限公司 | A kind of carrier communication termination power based on inductive |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140106 Granted publication date: 20051123 |