CN1556590A - Channel optimization device for power line high speed dada communication system - Google Patents
Channel optimization device for power line high speed dada communication system Download PDFInfo
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- CN1556590A CN1556590A CNA2004100013192A CN200410001319A CN1556590A CN 1556590 A CN1556590 A CN 1556590A CN A2004100013192 A CNA2004100013192 A CN A2004100013192A CN 200410001319 A CN200410001319 A CN 200410001319A CN 1556590 A CN1556590 A CN 1556590A
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Abstract
The invention relates to a channel optimization device for an electric wire high speed data communication system, which is connected between the user electric appliance and the electric wire power in series, and which includes device for filtering the phase wire and ground wire. The channel optimization device concretely includes low pass network part and filter circuit part, the low pass network part is connected with the eclectic wire power for restrain high frequency normal mode noise, the filter circuit part is connected with the user's electric appliance for restrain the common mode interference noise. Thus the invention improves the noise interference resisting ability of the electric wire high speed data communication system.
Description
Technical field
The present invention relates to the electron and electrician device, be specifically related to a kind of channel optimization means that is used for the high speed power line communication system.
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.
Yet the power distribution network power line is the design of transmission power current, and the transmission high-frequency carrier signal can run into many problems on power circuit, and wherein the noise and the interference of power circuit are a subject matter that influences the high speed power line communication performance for these.The various electrical appliances that mainly have its source in, especially some nonstandard products of inferior quality that the noise of power circuit and interference produce, this problem is especially outstanding in China.Therefore, how reducing the noise and the interference of power circuit, improve the circuit high-frequency resistance, optimize high frequency channel, is crucial to the performance that improves the high speed power line communication system.
In order to solve antinoise of high speed power line communication system and interference performance, the main communication technology that adopts the advanced person of research both at home and abroad, as modulation-demodulation technique, code correction technology and networking technology etc., but these methods cause equipment cost to increase, the grid complexity is unfavorable for practical application.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of channel optimization means that is used for the high speed power line communication system, and it can improve the antinoise and the antijamming capability of high speed power line communication system.
According to the present invention, a kind of channel optimization means that is used for the high speed power line communication system is provided, it is serially connected between consumer electronics equipment and the powerline power supply, and comprises the device that phase line and ground wire are carried out filtering simultaneously.
Preferably, described channel optimization means comprises low-pass network part and filter circuit part, and wherein said low-pass network part is connected with powerline power supply, is used to suppress the high frequency series mode noise, described filter circuit part is connected with consumer electronics equipment, is used to suppress the common mode disturbances noise.
This channel optimization means is installed between electrical appliance equipment and the powerline power supply, by some electric equipment is transformed low-resistance and the low characteristic of holding that power line presents, the high frequency characteristics impedance of itself and power line is mated substantially, thereby can reduce reflection loss and electric capacity absorption loss, improve data transmission distance and transmission reliability.And channel optimization means of the present invention is blocked in electric equipment one side by the High-frequency Interference that electric equipment is produced, make it not cause high frequency to pollute to electrical network, this has reached the raising signal to noise ratio too, reduces the error rate, has realized reliable, stable high-speed data communication.
The channel optimization means that is used for the high speed power line communication system of the present invention not only has good noise inhibiting ability, also has the optimizational function to power line high frequency carrier channel, show following some:
1. the noise inhibiting ability of broad frequency range.This contrive equipment can effectively suppress interference noise at 150KHz in the broad frequency range of 38MHz, compare with the high-voltage power line single-frequency or the double frequency arrowband trap of extensive use, it is much wide that the frequency band of this contrive equipment is wanted, and, it is high many that the rejection of this contrive equipment is wanted, as at f 〉=2MHz frequency range, noise suppressed 〉=40dB.
2. good impedance setting in the broad frequency range.This contrive equipment is designed to the Low ESR input, high impedance output.Like this, the variation of electrical appliance apparatus of load is because the impedance setting effect of this contrive equipment, and the influence of power circuit high-frequency resistance is reduced greatly.Same such impedance setting function is to realize in very wide frequency band range, wants wide many than arrowband trap and other network carrier impedance setting device frequency range.
3. high speed power line communication system channel optimization means not only stops the interference noise of power consumption equipment generation to enter electrical network, and the high-frequency resistance to the power network circuit has setting function in broad frequency range, has optimized the performance of power line high frequency carrier channel.
Description of drawings
The present invention is described in detail with practical example below in conjunction with accompanying drawing.
Accompanying drawing 1 is the isoboles of channel optimization means of the present invention;
Accompanying drawing 2 is circuit theory diagrams of channel optimization means of the present invention; And
Accompanying drawing 3 is use scheme of installations of channel optimization means of the present invention.
Embodiment
Now, specifically describe the channel optimization means that is used for the high speed power line communication system of the present invention with reference to the accompanying drawings, in the accompanying drawings, same or analogous Reference numeral is represented same or analogous parts.
Referring to accompanying drawing 1, channel optimization means of the present invention can equivalence be a six-port network, is serially connected in during use between consumer electronics equipment and the powerline power supply.As shown in Figure 1, the terminal 1 of this channel optimization means is connected with ground wire with the phase line of powerline power supply respectively with 2, terminal 1 ' be connected with ground wire with the phase line of consumer electronics equipment with 2 ' respectively, and other two terminals (G) ground connection of channel optimization means.
On the one hand, because for the noise that power consumption equipment produces, ground wire also presents high high-frequency resistance, therefore the forming circuit of channel optimization means of the present invention carries out filtering simultaneously to phase line and two input leads of ground wire, and make it not only can suppress series mode noise, and can suppress common-mode noise.
On the other hand, channel optimization means of the present invention is a kind of low pass circuit, and it does not almost influence the 50Hz power frequency component, and the High-frequency Interference noise signal is had very big decay, enters power line channel to stop noise; It presents higher resistance to high-frequency carrier signal simultaneously, has reduced reflection loss and the electric capacity absorption loss of power consumption equipment to high-frequency carrier signal, thereby has optimized the high speed power line communication channel.
As shown in Figure 2, the circuit of channel optimization means of the present invention is made up of inductance coil and electric capacity.The terminal 1 and 2 of channel optimization means respectively with power line circuit (promptly, powerline power supply) phase line is connected with ground wire, terminal 1 is connected with the end of inductance coil L1, and terminal 2 is connected with the end of inductance coil L2, and capacitor C 1 is connected between the other end of inductance coil L1 and L2, correspondingly, be serially connected in the inductance coil L1 on the power circuit, L2 and capacitor C 1 have constituted low-pass network part 3, suppressed the high frequency series mode noise effectively, simultaneously, by high-frequency signal inductive reactance xl=ω L as can be known, be serially connected in the inductance coil L1 on the power circuit, the existence of L2, can effectively improve the impedance of high-frequency carrier signal, play the effect of adjusting of high-frequency signal impedance.Capacitor C 1 is preferably in the scope of 0.01-0.1 μ F (withstand voltage 275V).Consider volume and overload current, be different from general power-supply filter, the inductance value of L1 and L2 is preferably in the scope of 10-20 μ H.
The terminal 1 of channel optimization means ' end with inductance coil L3 and capacitor C 3 is connected respectively, terminal 2 ' end with inductance coil L4 and capacitor C 2 is connected respectively, the other end ground connection of capacitor C 3 and C2, and have the common mode inductance coil L3 of magnetic core and the other end of L4 is connected with the two ends of capacitor C 1 respectively.Correspondingly, the filter circuit part 4 of common mode inductance coil L3, L4 and capacitor C 2, C3 composition can effectively suppress the common mode disturbances noise.Inductance coil L3, L4 are preferably about 1mH, and capacitor C 2, C3 are preferably and are not less than 1000pF but are not more than 4700pF (withstand voltage 275V).
In addition, in channel optimization means of the present invention, also can remove inductance coil L3 and L4, directly capacitor C 1 is connected across between the phase line and ground wire of consumer electronics equipment, but preferred channel optimization means of the present invention has inductance coil L3 and L4, and preferably this inductance coil L3 and L4 are the common mode inductance coils with magnetic core.
Accompanying drawing 3 is that channel optimization means of the present invention is used scheme of installation.During use, the channel optimization means 10 that is used for the high speed power line communication system of the present invention is serially connected between consumer electronics equipment 12 (figure is the consumer electronics supply socket) and the powerline power supply 13 (being the metope supply socket among the figure), effectively to reduce the influence of user load to the power line radio frequency carrier channel.
Although invention has been described; but foregoing description just for illustrative purposes; the invention is not restricted to above-mentioned specific descriptions in conjunction with the accompanying drawings; those of ordinary skills can not break away from the various changes of spirit of the present invention to it, and protection scope of the present invention is limited by the accompanying Claim book.
Claims (7)
1, a kind of channel optimization means that is used for the high speed power line communication system, described channel optimization means is serially connected between consumer electronics equipment and the powerline power supply, it is characterized in that this channel optimization means comprises the device (3,4) that phase line and ground wire are carried out filtering simultaneously.
2, channel optimization means as claimed in claim 1, it is characterized in that described channel optimization means comprises low-pass network part (3) and filter circuit part (4), wherein said low-pass network part is connected with powerline power supply, be used to suppress the high frequency series mode noise, described filter circuit part is connected with consumer electronics equipment, is used to suppress the common mode disturbances noise.
3, channel optimization means as claimed in claim 2, it is characterized in that, this low-pass network part is made of first and second inductance coils (L1, L2) and first electric capacity (C1), one end of described inductance coil (L1, L2) is connected with ground wire with the phase line of powerline power supply respectively, and first electric capacity (C1) is connected across between the other end of described two inductance coils (L1, L2) and is connected across between the phase line and ground wire of consumer electronics equipment; And described filter circuit part is made of the second and the 3rd electric capacity (C2, C3), and second is connected its other end ground connection respectively with an end of the 3rd electric capacity with ground wire with the phase line of consumer electronics equipment.
4, channel optimization means as claimed in claim 3, it is characterized in that described channel optimization means also comprise the phase line of the end that is connected to first electric capacity (C1) and consumer electronics equipment and be connected the other end of first electric capacity (C1) and the ground wire of consumer electronics equipment between third and fourth inductance coil (L3, L4).
5, channel optimization means as claimed in claim 4 is characterized in that third and fourth inductance coil (L3, L4) is the common mode inductance coil with magnetic core.
6. as each described channel optimization means among the claim 3-5, it is characterized in that first electric capacity is 0.01-0.1 μ F.
7. channel optimization means as claimed in claim 6, the value that it is characterized in that the second and the 3rd electric capacity is not less than 1000pF but is not more than 4700pF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100013192A CN1556590A (en) | 2004-01-06 | 2004-01-06 | Channel optimization device for power line high speed dada communication system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100013192A CN1556590A (en) | 2004-01-06 | 2004-01-06 | Channel optimization device for power line high speed dada communication system |
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| CN1556590A true CN1556590A (en) | 2004-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2004100013192A Pending CN1556590A (en) | 2004-01-06 | 2004-01-06 | Channel optimization device for power line high speed dada communication system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102474307A (en) * | 2010-04-12 | 2012-05-23 | 松下电器产业株式会社 | Impedance stabilization device |
| CN108183727A (en) * | 2017-12-08 | 2018-06-19 | 囯网河北省电力有限公司电力科学研究院 | Power information interference signal filter, power information acquisition system and method |
| CN110704354A (en) * | 2019-09-16 | 2020-01-17 | 无锡江南计算技术研究所 | Common-mode noise suppression method for I2C communication bus and bus network |
| CN113873691A (en) * | 2021-10-08 | 2021-12-31 | 深圳市力合微电子股份有限公司 | PLBUS intelligent home gateway |
-
2004
- 2004-01-06 CN CNA2004100013192A patent/CN1556590A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102474307A (en) * | 2010-04-12 | 2012-05-23 | 松下电器产业株式会社 | Impedance stabilization device |
| US8698573B2 (en) | 2010-04-12 | 2014-04-15 | Panasonic Corporation | Impedance stabilization device |
| CN102474307B (en) * | 2010-04-12 | 2014-04-16 | 松下电器产业株式会社 | Impedance stabilization device |
| CN108183727A (en) * | 2017-12-08 | 2018-06-19 | 囯网河北省电力有限公司电力科学研究院 | Power information interference signal filter, power information acquisition system and method |
| CN110704354A (en) * | 2019-09-16 | 2020-01-17 | 无锡江南计算技术研究所 | Common-mode noise suppression method for I2C communication bus and bus network |
| CN113873691A (en) * | 2021-10-08 | 2021-12-31 | 深圳市力合微电子股份有限公司 | PLBUS intelligent home gateway |
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Open date: 20041222 |