CN101304266B - Digital low-voltage electric power line length subsection-setting transmission integrated information system - Google Patents

Abstract

The invention relates to a transmission integrated information system of the digital low voltage power lines segment length arrangement, consisting of a integrated information interchanging station, digital low voltage power lines, integrated digital information users, a computer website, a digital television website and a telephone interchanging station. The integrated information interchanging station is respectively connected with the integrated digital information users, the computer website, the digital television website and the telephone interchanging station through the digital low voltage power lines and a telecom compatible network; the digital low voltage power lines are divided into a plurality of line lengths from the farthest integrated digital information user; the biggest bandwidth of transmission frequency spectrums and the corresponding rates of information transmission are designed and calculated in segment so as to lead the amount of the digital information users, the bandwidth of the frequency spectrums and the highest transmission rates which are connected on the line lengths from the far to near to increase in sequence respectively, thus achieving the purpose that the bandwidths of the frequency spectrums and the transmission rates are intensively supplied for key use in different digital devices in the line segments and meeting the application requirements of the highest rates and the widest occupied frequency spectrum of high definition digital televisions of the integrated digital information users.

Description

A kind of digital low-voltage electric power line length subsection is provided with transmission integrated information system

Technical field

The present invention relates to a kind of digital carrier system of power circuit, refer in particular to a kind of digital low-voltage electric power line length subsection transmission integrated information system is set, be used to improve transmission of Information speed.

Background technology

In order to make computer data net wide-band-message insert the user, all open broadband Modem (modulator-demodulator) transmission information technology both at home and abroad at research and development Applied Digital low-voltage power line.I study power circuit for many years and transmit multichannel wide-band-message technology simultaneously, have invented multinomial patents such as multimedia information network on power line in village level.But all unresolved ultra broadband ultrahigh speed integrated information of high definition digital television that comprises of above-mentioned technology inserts user's a difficult problem through digital low-voltage electric line of force road.

Summary of the invention

The objective of the invention is: utilize the digital low-voltage electric power line length subsection design to provide a kind of and insert unique user and user's group respectively, thereby obtain multiplexing ultra broadband and superfast integrated information system.

The technical scheme that the present invention taked is: a kind of digital low-voltage electric power line length subsection is provided with transmission integrated information system, is made up of 10KV/220V transformer, low pass inductor L1 and L2, high pass capacitor C1-C3, digital low-voltage electric line offorce road 1, integratedinformation switching station 2 and 3 of integrated digital information users.Built on stilts three-phase 10KV medium voltage electricity circuit presses input to link to each other in the 10KV of low pass inductor L1 and 10KV/220V transformer, and joins through the input of high pass capacitor C1 and integrated information switching station 2.The 220V low-voltage output of 10KV/220V transformer is provided with A phase, B phase, C phase and 0 line, four phase output terminals through low pass inductor L2 respectively; Four phase output terminals link to each other with integratedinformation switching station 2 through high pass capacitor C2 respectively; Four phase output terminals are also formed A-0 phase, B-0 respectively mutually and C-0 three digital low-voltage electric line of force roads and be connected to the 220V power supply user side under this transformer mutually, and integratedinformation switching station 2 is connected with integrateddigital information user 3 through the digital low-voltage electric line offorce road 1 of arbitrary road high pass capacitor C3 and correspondence.Digital low-voltage electric line offorce road 1 from thedigital information user 3 of distal-most end to integratedinformation switching station 2 is for by the length segmentation setting, and to set gradually be the first line segment length L₁, the second line segment length L₂, the 3rd line segment length L₃, the 4th line segment length L₄, the 5th line segment length L₅And until N line segment length L_nCorresponding with each line segment length; Digital information user's sum between adjacent two line segment lengths constitutes the first line segment user scope, the second line segment user scope, the 3rd line segment user scope, the 4th line segment user scope, the 5th line segment user scope respectively and until N-1 line segment user scope, the digital information user's sum within the N line segment length constitutes N line segment user scope; To N line segment user scope, the highest frequency of the digital information number of users in each user scope, the bandwidth of used frequency spectrum and transmission data increases progressively successively by the first line segment user scope.

Integrateddigital information user 3 is made up ofsafety device 4, telecommunicationscompatible network 5,consumer electronics equipment 6 and 7 of user's integrated digital information equipments; Digital low-voltage electric line of force road links to each other through the input ofsafety device 4 with telecommunicationscompatible network 5, and the output of telecommunicationscompatible network 5 is connected with user's integrateddigital information equipment 7 withconsumer electronics equipment 6 respectively.Telecommunicationscompatible network 5 is formed by connecting low pass inductor L3 and high pass capacitor C4.

Advantage of the present invention is:

1, because integrated information switching station line length of farthest user to the digital low-voltage electric line of force road is divided into several line segment lengths; Make the user scope of this line segment of digital information user's sum formation between adjacent two line segment lengths; Segment design is calculated the high-transmission spectral bandwidth and the respective transmissions information rate of this line segment user scope; Make from the digital information number of users, spectral bandwidth and the transmission highest frequency that on the near line segment length, are connected and increase progressively successively respectively; Reach spectral bandwidth and transmission rate concentrated and supply with the purpose that different digital equipment emphasis uses in this line segment, satisfy among the integrated digital information user high definition digital television speed the highest with take the wideest instructions for use of frequency spectrum.

2, owing to be the highest frequency that different line segment user scopes provides the bandwidth and the transmission data of different digital information numbers of users, used frequency spectrum on total digital low-voltage electric line of force road length; Make from making full use of information resources such as spectral bandwidth and transmission rate as far as near user; It not only is applied to digital low-voltage electric line of force road; Also can be applicable to simulate and number, the compatible low-voltage power line of mould, be used for improving that each inserts the user takies spectral bandwidth and transmission integrated information speed and capacity.

Description of drawings

Fig. 1 designs the transmission integrated information system composition frame chart for digital low-voltage electric power line length subsection.

Fig. 2 is low-voltage power line user telecommunications compatible network, electrical equipment and integrated digital information equipment composition frame chart.

Fig. 3 is that user's integrated digital message transmission and switching network equipmentsystem form embodiment 1 block diagram.

Fig. 4 is that user's integrated digital message transmission and switching network equipmentsystem form embodiment 2 block diagrams.

Embodiment

Do to describe in further detail below in conjunction with the accompanying drawing specific embodiments of the invention.

As shown in Figure 1, a kind of digital low-voltage electric power line length subsection is provided with transmission integrated information system, is made up of 10KV/220V transformer, low pass inductor L1 and L2, high pass capacitor C1-C3, integratedinformation switching station 2 and 3 of integrated digital information users.Wherein, low pass inductor L1 and L2 are logical low frequency (for example 50HZ), resistance high frequency (for example more than the 1254KHZ) inductor; High pass capacitor C1-C3 is logical high frequency, the high pressure resistant communication capacitor of resistance low frequency.Integratedinformation switching station 2 is meant long-distance and local digital power circuit integrated information switching station and transmission equipment.Integrateddigital information user 3 is meant telecommunications compatible network, consumer electronics and integrated digital information equipment.

Low-voltage power line is meant that from the low-pressure side of 10KV/220V transformer a certain 220V circuit received the circuit of consumer electronics power supply through the low pass inductor of logical low frequency, resistance high frequency; Digital low-voltage electric line of force road then is to be connected to integrateddigital information user 3 communication lines from the integrated information switching station through the high pass capacitor that leads to high frequency, resistance low frequency.If transformer station and integrated information switching station be not when a place, above-mentioned two kinds of line lengths are also unequal.

Built on stilts three-phase 10KV medium voltage electricity circuit presses input to link to each other in the 10KV of low pass inductor L1 and 10KV/220V transformer, and joins through the input of high pass capacitor C1 and integrated information switching station 1.The 220V low-voltage output of 10KV/220V transformer is provided with A phase, B phase, C phase and 0 line, four phase output terminals through low pass inductor L2 respectively; Four phase output terminals link to each other with integratedinformation switching station 2 through high pass capacitor C2 respectively, and four phase output terminals are also formed A-0 phase, B-0 respectively mutually and C-0 three digital low-voltage electric line of force roads and be connected to the affiliated 220V power supply user side of this transformer mutually.Digital low-voltage electric line of force road among Fig. 1 is a digital low-voltage electric line of force road that is made up of mutually C-0, is omitted among the figure of other two digital low-voltage electric line of force roads (B-0, C-0).Integratedinformation switching station 2 is connected with integrateddigital information user 3 through arbitrary road high pass capacitor C3 and corresponding digital low-voltage electric line of force road.Digital low-voltage electric line offorce road 1 from thedigital information user 3 of distal-most end to integratedinformation switching station 2 is for by the length segmentation setting, and to set gradually be the first line segment length L₁, the second line segment length L₂, the 3rd line segment length L₃, the 4th line segment length L₄, the 5th line segment length L₅And N line segment length L_nCorresponding with each line segment length; Digital information user's sum between adjacent two line segment lengths constitutes the first line segment user scope, the second line segment user scope, the 3rd line segment user scope, the 4th line segment user scope, the 5th line segment user scope respectively and until N-1 line segment user scope, the digital information user's sum within the N line segment length constitutes N line segment user scope; To N line segment user scope, the highest frequency of the digital information number of users in each user scope, the bandwidth of used frequency spectrum and transmission data increases progressively successively by the first line segment user scope.

Digital low-voltage electric line of force road design usually is to calculate maximum usable frequency f according to parameters such as the farthest user line length and the power of posting a letter; It deducts starts at frequency (for example for 1254KHZ), obtains maximum usable spectrum bandwidth of transmission information (f-1254) and high-transmission information rate; Find the solution each user's on this digital power line average maximum usable spectrum bandwidth and transmission rate again.

The digital low-voltage electric power line length subsection method for designing is with method for designing is different usually; It is that integrated information switching station line length of farthest user to the digital low-voltage electric line of force road is divided into several line segment lengths, and designing and calculating its high-transmission spectral bandwidth and respective transmissions information rate are carried out in segmentation; Its spectral bandwidth and transmission rate are supplied with small number of users distribution use in the line segment.

In the integrated digital information user, high definition digital television speed is the highest, and it is the wideest that it takies frequency spectrum.For example, each integrated digital information user integrated digital information user transmission rate of monopolizing frequency band equals greater than 40Mbps.When adopting general method for designing;, a digital low-voltage electric line of force road; By its nose road distance calculation, total usable spectrum bandwidth and corresponding transmitting rate are divided equally by amounting to number of users, and each user's integrated digital rate of information throughput difficulty can be accomplished to monopolize and equaled the speed greater than 40Mbps.

For apart from integratedinformation switching station 2 one group of integrateddigital information user 3 farthest, its low-voltage power line length is pressed L₁(km) calculate, be actually index word power circuit length from greater than L₂To equaling less than L₁Scope in user group, the number of users of its distribution should be minimum, defining it is the first line segment user scope, this user scope comprises telecommunications compatible network, consumer electronics and integrated digital information equipment.For apart from 2 one group of integrateddigital information users 3 far away of integrated information switching station, its low-voltage power line length is pressed L₂Calculate, be actually index word power circuit length from greater than L₃, to equaling less than L₂User's group in the scope, the number of users of its distribution should be less, and defining it is the user scope in second line segment length.For the one group integrateddigital information user 3 nearest apart from integratedinformation switching station 2, its low-voltage power line length is pressed L_nCalculate, be actually index word power circuit length from integratedinformation switching station 2, to equaling less than L_nUser's group in the scope, the number of users of its distribution should be at most, and defining it is the user scope in the n line segment length.And the like.

Integrated digital information user in each line segment length of digital low-voltage electric line of force road is meant the user in the scope between the adjacent segments length, and a user can be arranged, and also a plurality of users can be arranged.

Illustrate digital low-voltage electric line of force road segment design practical implementation data.For example a certain 5 sections line design are divided on digital low-voltage electric line of force road.First section line length (farthest) L₁=0.5km; Second section line length L₂=0.4km; The 3rd section line length L₃=0.3km; The 4th section circuit line length L₄=0.2km; The 5th section line length L₅=0.1km.If equal number: be 10 families in first line segment length greater than 40Mbps ultrahigh speed integrated digital information user; The user is 16 families in second line segment length; Three, be respectively 22,28,32 users in the 4th, the 5th line segment length.Each user can both monopolize simultaneously and equals the speed greater than 40Mbps, is used to transmit integrated digital information.

During by the line length segment design, first line segment length distributes the interior number of users of its line segment minimum because digital power line length is the longest; 10 users are for example only arranged in first line segment length, and adding up to transmission rate is B for equaling greater than 400Mbps and corresponding spectral bandwidth_1-2(user'sspectral bandwidth 2 times); Like this than being easier to realize above-mentioned superelevation speed integrated digital message transmission.

For example, first line segment length design: its digital circuit length is L₁, the high-transmission frequency of first line segment length of only establishing 10 ultrahigh speed users is f_1-2, it equals initial frequency and adds two CU spectral bandwidth B_1-2, its numerical value is much smaller than the dozens of user's who is regardless of line segment high-transmission frequency.High-transmission frequency f according to 10 users_1-2, obtain the required maximum performance number of posting a letter, if its performance number can realize, then calculate and accomplish; Otherwise reduce the ultrahigh speed integrated digital information user number in this line segment length.

The design of second line segment length: its digital circuit length is L₂, it is less than L₁Because its line length is little, power and above-mentioned user post a letter power etc. simultaneously if it is posted a letter, and then the maximum usable frequency obtained of the second line segment length transmitting digital information should be greater than the first line segment highest frequency f_1-2, this just is that second line segment length transmission ultrahigh speed information provides the spectral bandwidth resource.If equal less than L₂, greater than the 3rd line segment length L₃In the length range, 16 integrated digital information users are arranged, each user monopolizes information rate and equals greater than 40Mbps, and aggregate information speed equals greater than 16x40Mbps, and calculating its corresponding spectral bandwidth is B_2-4Its corresponding high-transmission frequency is f_2-4, it equals f_1-2Add B_2-4According to its high-transmission frequency, ask the maximum performance number of posting a letter, if can realize, then calculate and accomplish; Otherwise, reduce number of users.

The design of the 3rd line segment length: its digital circuit length is L₃, it is less than L₂Because of its line length is little, if post a letter power and above-mentioned power etc. are simultaneously, the 3rd line segment length transmission information highest frequency should be greater than the second line segment highest frequency f_2-4It is that the 3rd line segment length transmission ultrahigh speed digital information provides condition.If equal less than L₃, greater than L₄In the line segment length scope, 22 integrated digital information users are arranged, each user monopolizes information rate and equals greater than 40Mbps, and aggregate rate equals greater than 22x40Mbps, can calculate its corresponding spectral bandwidth and high-transmission frequency thereof.The same, according to its high-transmission frequency, obtain the corresponding performance number of posting a letter, if can realize, then calculate and accomplish; Otherwise, reduce number of users.

Can use the same method to continue line segment lengths such as design the 4th, the 5th; Setting its length is L₄, L₅Deng line segment wide-ultra broadband, superfast number of users; For example, there are 28 to equal in the 4th line segment length scope greater than 40Mbps integrated digital information user; 32 ultra broadband ultrahigh speed integrated digital information users are arranged in the 5th line segment length scope, obtain its corresponding power of posting a letter of realizing.

Actual design is calculated and is shown that the access customer number word low-voltage electric power line length subsection design method of the invention has improved spectral bandwidth that each user occupies on the circuit and transmission rate significantly.It not only is used in digital low-voltage electric line of force road, also can be used in simulation and number, the compatible low-voltage power line of mould, is used for improving that each inserts the user takies spectral bandwidth and transmission integrated information speed and capacity.

As shown in Figure 2; Integrateddigital information user 3 is made up ofsafety device 4, telecommunicationscompatible network 5,consumer electronics equipment 6 and 7 of user's integrated digital information equipments; Digital low-voltage electric line of force road links to each other through the input ofsafety device 4 with telecommunicationscompatible network 5, for example is attempted by high pressure fusion splicer and ground wire between two lines of 220V; Or be serially connected in the big current fuse between two lines of 220V.The output of telecommunicationscompatible network 5 is connected with user's integrateddigital information equipment 7 withconsumer electronics equipment 6 respectively.Wherein, telecommunicationscompatible network 5 is formed by connecting low pass inductor L3 and resistance low frequency, logical high frequency and the high voltage bearing high pass capacitor C4 of logical low frequency, resistance high frequency.Noise (ripple) interference level that the telecommunications compatible network is produced its consumer electronics equipment should be in tolerance band.

User's integrated digital message transmission as shown in Figure 3 and switching network equipmentsystem form embodiment 1, and described user's integrateddigital information equipment 7 closes road andsplitter 11, frequency division system shunt andmixer 12, long-distance and local digital power circuit integratedinformation switching station 13, computerlocal area website 14,15 formations in interactive digital TV station bydigital terminal 8, signal processor 1 (9), signal processor 2 (10), frequency division system; Closing the road as digital telephone, computer and the interactive DTV ofdigital terminal 8 through signal processor 1 (9) and frequency division system links to each other withsplitter 11; Frequency division system is closed the road and is communicated by letter withmixer 12 high frequency carriers along separate routes with frequency division system through digital low-voltage electric line of force road withsplitter 11; Frequency division system links to each other with local digital power circuit integratedinformation switching station 13 with long-distance through signal processor 2 (10) withmixer 12 along separate routes, long-distancely is connected with interactivedigital TV station 15 with computerlocal area website 14 respectively with local digital power circuit integratedinformation switching station 13.

In user's integrated digital information, various digital information apparatus can be on the systematic unity design basis, and different time is built.Adopt frequency division system that the various digital informations of user are closed the road, transmitted along separate routes and on the line.Digital terminal 8 comprises digital telephone, computer and interactive DTV.Wherein, it can be PCM digital telephone or other digital telephone for a digital telephone, but one or more; Computer can be surfed the Net, can be at a high speed or low speed; Interactive DTV both can be the ordinary numbers TV, can be high definition digital television also, and adopting interactive TV is to send information on demand TV station program for the user with up channel.Signal processor 1 (9) comprises corresponding with digital telephone Modem, medium-high frequency modulator-demodulator, amplifier, transmission and receiving equipment; The broadband Modem corresponding, medium-high frequency modulator-demodulator, amplifier, transmission and receiving equipment with computer internet; With ultra broadband Modem, medium-high frequency modulator-demodulator, amplifier, transmission and the receiving equipment corresponding with interactive DTV, wherein, ultra broadband Modem can be made up of multichannel broadband Modem.One end of signal processor 1 (9) links to each other withdigital terminal 8, and the other end and frequency division system close the road andsplitter 11 joins, frequency division system close road and splitter accomplish above-mentioned three kinds of different address of information high frequency spectrum close road and along separate routes.Connect frequency division system close road andsplitter 11 and frequency division system along separate routes withmixer 12 be digital low-voltage electric line of force road, it is with two-wire system carry high frequency information, sends and receives the realization of employing frequency division system.Among the figure, the direction that the direction of arrow indication had both flowed for high-frequency information.Up integrated information stream accounts for a built on stilts two-line digital low-voltage power line together with downlink information stream, but its high frequency carrier spectrum position separates.Signal processor 1 (9) and signal processor 2 (10) are mutual corresponding equipment.Signal processor 2 (10) comprises the Modem corresponding with the digital telephone channel, medium-high frequency demodulator modulator, amplifier, reception and transmitting apparatus; The broadband Modem corresponding, high intermediate frequency demodulator modulator, amplifier, reception and transmitting apparatus with the computer internet channel; With ultra broadband Modem, medium-high frequency demodulator modulator, amplifier, reception and the transmitting apparatus corresponding with interactive digital-TV channel; Wherein, ultra broadband Modem can be made up of multichannel broadband Modem.One end of signal processor 2 (10) links to each other withmixer 12 with frequency division system along separate routes; The other end and long-distance and local digital power circuit integratedinformation switching station 13 join; Comprising digital telephone exchange website, long-distancely be connected with computerlocal area website 14 and interactivedigital TV station 15 with local digital power circuit integratedinformation switching station 13.

User's integrated digital message transmission as shown in Figure 4 and switching network equipmentsystem form embodiment 2, and user's integrateddigital information equipment 7 is bydigital terminal 16, Data Buffer Memory 1 (17), Data Buffer Memory 2 (18), signal processor 1 (19), signal processor 2 (20), the asynchronous connection multiplexing terminal program ofAMT control unit 21, PROGRAMMABLE TIMINGSVSTEM unit 22, programcontrol switching network 23,25 formations in computerlocal area website 24 and interactive digital TV in high resolution website; Digital telephone, computer and interactive digital HDTV asdigital terminal 16 link to each other with signal processor 1 (19) through Data Buffer Memory 1 (17); The asynchronous connection multiplexing terminal program ofAMT control unit 21 joins with data/address bus, the address decoding line of Data Buffer Memory 1 (17); PROGRAMMABLETIMING SVSTEM unit 22 both joined with data/address bus, address decoding line and the synchronised clock line of signal processor 1 (19); Synchronised clock line with Data Buffer Memory 1 (17) joins again; Signal processor 1 (19) and signal processor 2 (20) through the digital low-voltage electric line of force road high frequency carrier communicate by letter; Signal processor 2 (20) links to each other with programcontrol switching network 23 through Data Buffer Memory 2 (18), and programcontrol switching network 23 is connected with interactive digital TV inhigh resolution website 25 with computerlocal area website 24 respectively.

In the asynchronous connection multiplex terminal of ATMprocedure control unit 21, ATM-Asynchronous Transfer Mode is asynchronous transmission, switch mode, and it is made up of high-speed dedicated computer software and hardware and external unit thereof, and D is a data/address bus, and A is the decoder address wire.In PROGRAMMABLETIMING SVSTEM unit 22, T is the timing line of its output, and it provides the accurate clock of high stability for the asynchronous connection multiplex terminal of ATMprocedure control unit 21, Data Buffer Memory 1 (17) and signal processor 1 (19) etc.Data Buffer Memory 1 (17) is that integrated digital information A TM compiles frame and separates the frame transform Data Buffer Memory, and what it accomplished the transmission of asynchronous multi-path digital information closes road and conversion or exchange along separate routes.Signal processor 1 (19) is multichannel broadband Modem and medium-high frequency modulator-demodulator, amplifier, sends out receiver unit.Be connected by digital power line between signal processor 1 (19) and the signal processor 2 (20), carry out the transmission of high frequency carrier information bidirectional.Signal processor 2 (20) is multichannel broadband Modem and high intermediate frequency demodulator modulator, amplifier, a transceiver unit of being located at the exchange website.Data Buffer Memory 2 (18) is integrated digital information, ATM, separates the buffer storage of frame, volume frame transform data that it links to each other with programcontrol switching network 23, and is controlled by its built-in software and hardware, and is as indicated with a dotted line in Fig. 4.Programcontrol switching network 23 is long-distance and local ATM-DPL integrated digital information programme control switching network equipments.DPL among the figure is meant Digital Power Line, i.e. digital power line.This integrated digital information network comprises local and long-distance digital telephone network, computer data net and high definition digital television net.

Claims (7)

1. a digital low-voltage electric power line length subsection is provided with transmission integrated information system; Constitute by 10KV/220V transformer, low pass inductor L1 and L2, high pass capacitor C1 and C2 and C3, digital low-voltage electric line of force road (1), integrated information switching station (2) and integrated digital information user (3); Built on stilts three-phase 10KV medium voltage electricity circuit presses input to link to each other in the 10KV of low pass inductor L1 and 10KV/220V transformer, and joins through the input of high pass capacitor C1 and integrated information switching station (2); The 220V low-voltage output of 10KV/220V transformer is provided with A phase, B phase, C phase and 0 line, four phase output terminals through low pass inductor L2 respectively; Four phase output terminals link to each other with integrated information switching station (2) through high pass capacitor C2 respectively; Four phase output terminals are also formed A-0 phase, B-0 respectively mutually and C-0 three digital low-voltage electric line of force roads and be connected to the 220V power supply user side under this transformer mutually, and integrated information switching station (2) is connected with integrated digital information user (3) through the digital low-voltage electric line of force road (1) of arbitrary road high pass capacitor C3 and correspondence; It is characterized in that: the digital low-voltage electric line of force road (1) from the digital information user (3) of distal-most end to integrated information switching station (2) is for by the length segmentation setting, and to set gradually be the first line segment length L₁, the second line segment length L₂, the 3rd line segment length L₃, the 4th line segment length L₄, the 5th line segment length L₅And until N line segment length L_nCorresponding with each line segment length; Digital information user's sum between adjacent two line segment lengths constitutes the first line segment user scope, the second line segment user scope, the 3rd line segment user scope, the 4th line segment user scope, the 5th line segment user scope respectively and until N-1 line segment user scope, the digital information user's sum within the N line segment length constitutes N line segment user scope; To N line segment user scope, the highest frequency of the digital information number of users in each user scope, the bandwidth of used frequency spectrum and transmission data increases progressively successively by the first line segment user scope.

2. digital low-voltage electric power line length subsection according to claim 1 is provided with transmission integrated information system, it is characterized in that: described low pass inductor L1 and L2 are respectively logical low frequency, resistance inductor in high frequency.

3. digital low-voltage electric power line length subsection according to claim 1 is provided with transmission integrated information system, it is characterized in that: described high pass capacitor C1 and C2 and C3 are respectively logical high frequency, resistance low frequency capacitor.

4. digital low-voltage electric power line length subsection according to claim 1 is provided with transmission integrated information system, it is characterized in that: described integrated information switching station (2) is long-distance and local digital power circuit integrated information switching station and transmission equipment.

5. digital low-voltage electric power line length subsection according to claim 1 is provided with transmission integrated information system, it is characterized in that: described integrated digital information user (3) is by safety device (4), telecommunications compatible network (5), consumer electronics equipment

(6) and user's integrated digital information equipment (7) constitute; Digital low-voltage electric line of force road links to each other through the input of safety device (4) with telecommunications compatible network (5), and the output of telecommunications compatible network (5) is connected with user's integrated digital information equipment (7) with consumer electronics equipment (6) respectively; Described telecommunications compatible network (5) is formed by connecting low pass inductor L3 and high pass capacitor C4.

6. digital low-voltage electric power line length subsection according to claim 5 is provided with transmission integrated information system, it is characterized in that: described user's integrated digital information equipment (7) closes road and splitter (11), frequency division system by digital terminal (8), signal processor 1 (9), signal processor 2 (10), frequency division system and constitutes with mixer (12), long-distance and local digital power circuit integrated information switching station (13), computer local area website (14), interactive digital TV station (15) along separate routes; Closing the road as digital telephone, computer and the interactive DTV of digital terminal (8) through signal processor 1 (9) and frequency division system links to each other with splitter (11); Frequency division system is closed the road and is communicated by letter with mixer (12) high frequency carrier along separate routes with frequency division system through digital low-voltage electric line of force road with splitter (11); Frequency division system links to each other with local digital power circuit integrated information switching station (13) with long-distance through signal processor 2 (10) with mixer (12) along separate routes, long-distancely is connected with interactive digital TV station (15) with computer local area website (14) respectively with local digital power circuit integrated information switching station (13).

7. digital low-voltage electric power line length subsection according to claim 5 is provided with transmission integrated information system, it is characterized in that: described user's integrated digital information equipment (7) is made up of digital terminal (16), Data Buffer Memory 1 (17), Data Buffer Memory 2 (18), signal processor 1 (19), signal processor 2 (20), the asynchronous connection multiplexing terminal program of AMT control unit (21), PROGRAMMABLE TIMING SVSTEM unit (22), program control switching network (23), computer local area website (24) and interactive digital TV in high resolution website (25); Digital telephone, computer and interactive digital HDTV as digital terminal (16) link to each other with signal processor 1 (19) through Data Buffer Memory 1 (17); The asynchronous connection multiplexing terminal program of AMT control unit (21) joins with data/address bus, the address decoding line of Data Buffer Memory 1 (17); PROGRAMMABLE TIMING SVSTEM unit (22) both joined with data/address bus, address decoding line and the synchronised clock line of signal processor 1 (19); Synchronised clock line with Data Buffer Memory 1 (17) joins again; Signal processor 1 (19) and signal processor 2 (20) through the digital low-voltage electric line of force road high frequency carrier communicate by letter; Signal processor 2 (20) links to each other with program control switching network (23) through Data Buffer Memory 2 (18), and program control switching network (23) is connected with interactive digital TV in high resolution website (25) with computer local area website (24) respectively.

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