CN103346846A

CN103346846A - Communication channel stimulation system of electricity consumption information collection system

Info

Publication number: CN103346846A
Application number: CN2013102487281A
Authority: CN
Inventors: 袁瑞铭; 易忠林; 钟侃; 田海亭; 周丽霞; 杨晓波; 席晓宇
Original assignee: State Grid Corp of China SGCC; Metering Center of State Grid Jibei Electric Power Co Ltd
Current assignee: State Grid Corp of China SGCC; North China Grid Co Ltd; Metering Center of State Grid Jibei Electric Power Co Ltd
Priority date: 2013-06-21
Filing date: 2013-06-21
Publication date: 2013-10-09
Anticipated expiration: 2033-06-21
Also published as: CN103346846B

Abstract

The invention provides a communication channel stimulation system of an electricity consumption information collection system. The communication channel stimulation system comprises a master station computer, a remote communication channel stimulation subsystem, a collection terminal, a local communication channel stimulation subsystem, an electric energy meter and a power purifying subsystem, wherein the master station computer is used for conducting signal interaction with the collection terminal and determining the communication performance of the electricity consumption information collection system according to the signal interaction result, the remote communication channel stimulation subsystem is used for conducting remote communication channel characterization processing on a signal transmitted between the master station computer and the collection terminal, the collection terminal is used for conducting signal interaction with the master station computer and conducting signal interaction with the electric energy meter, the local communication channel stimulation subsystem is used for conducting local communication channel characterization processing on signal transmitted between the collection terminal and the electric energy meter, the electric energy meter is used for conducting signal interaction with the collection terminal through the local communication channel stimulation subsystem, and the power purifying subsystem is used for providing electric energy, mating impedance and isolating interfering noise. The communication channel stimulation system can accurately and comprehensively stimulate the basic feature of the communication channel of the electricity consumption information collection system and can provide good reference information for communication channel construction.

Description

A kind of communication channel analogue system of power information acquisition system

Technical field

The present invention relates to technical field of power systems, concrete, relate to a kind of communication channel analogue system of power information acquisition system.

Background technology

The power information acquisition system is the system that the power information of power consumer is gathered, handled and monitors in real time, realizes that automatic collection, metering exception monitoring, electric energy quality monitoring, electrical energy consumption analysis and management, relevant information issue, the distributed energy of power information monitored, the functions such as information interaction of intelligent power equipment.

The power information acquisition system mainly is made of electric energy meter, acquisition terminal, communication channel and main website; Wherein, electric energy meter is the metering device with functions such as precision height, the control of intelligence expense, the storage of electricity price information about power, remaining sum warning, remote information transmission; Acquisition terminal is the equipment that the electric energy meter power information is gathered, and can be divided into types such as special change acquisition terminal, centralized automatic meter-reading terminal (comprising concentrator, collector), distributed energy monitor terminal by application places; Main website is that the data of carrying out acquisition terminal are collected task, realizes the equipment of centralized stores, management and the analysis of power information.

The communication channel of power information acquisition system can be divided into two kinds of telecommunication channel and local communication channels; Wherein, telecommunication channel is for the transfer of data communication of carrying out between main station system and the acquisition terminal, and the communication mode that telecommunication channel is commonly used has optical fiber private network communication, wireless public network communication (GPRS/CDMA), wireless private network communication etc. at present; Local communication channel is used for acquisition terminal communicates by letter with the transfer of data between the electric energy meter, and present local communication channel communication mode commonly used has RS-485 communication, low-voltage powerline carrier communication, micropower wireless communication etc.

Be illustrated in figure 1 as common a kind of power information acquisition system schematic diagram at present, comprise: the electric energy meter 102 of common electric energy meter 101, collector 200, embedded communication/acquisition function, concentrator 300, main website 400, wherein, be connected by the RS-485 line between collector 200 and the common electric energy meter 101, be connected by local communication channel between the electric energy meter 102 of collector 200 and embedded communication/acquisition function and the concentrator 300, be connected by telecommunication channel between concentrator 300 and the main website 400.

In the construction of power information acquisition system, selection is stable, reliable, real-time, the safe communication mode is the key that guarantees system safety stable operation, directly affect main website and acquisition terminal, the reliability of communicating by letter between acquisition terminal and the electric energy meter and gather success rate.How according to geographical environment and low pressure power utilization network distribution situation, the local and remote communication mode of choose reasonable is to the follow-up construction of power information acquisition system and applied decisive meaning.In order to pass judgment on the communication performance of communication channel in the power information acquisition system, there have been some analogue systems that are used for power information acquisition system communication channel to occur in the prior art, these analogue systems can only be carried out emulation (for example can only carry out the system of emulation to the low-voltage powerline carrier communication channel) to the communication channel of independent a certain type mostly, yet actual power information acquisition system relates to multiple communication channel usually simultaneously, want the communication performance of true comprehensively reaction power information acquisition system, need a kind of whole analogue system that can comprehensively cover various communication channels in the power information acquisition system of exploitation badly.

Summary of the invention

The main purpose of the embodiment of the invention is to provide a kind of communication channel analogue system of power information acquisition system, can only carry out emulation to the communication channel of independent a certain type to solve the power information acquisition system communication channel emulation technology of developing in the prior art, can not accurately comprehensively react the defective of power information acquisition system communication performance.

To achieve these goals, the embodiment of the invention provides the communication channel analogue system of power information acquisition system, comprising: master station computer, telecommunication channel simulation subsystem, local communication channel simulation subsystem, power conditioner subsystem, acquisition terminal and electric energy meter; Wherein,

Master station computer is connected with the telecommunication channel simulation subsystem; Signal is mutual for being undertaken by described telecommunication channel simulation subsystem and acquisition terminal, and determines the communication performance of described power information acquisition system according to the signal interaction results;

The telecommunication channel simulation subsystem connects master station computer and acquisition terminal respectively; Be used for the channel characteristics of simulation telecommunication channel, the signal that transmits between master station computer and the acquisition terminal is carried out the telecommunication channel characterization;

Acquisition terminal connects telecommunication channel simulation subsystem and local communication channel simulation subsystem respectively; It is mutual to be used for carrying out signal by described telecommunication channel simulation subsystem and master station computer, and it is mutual to carry out signal by described local communication channel simulation subsystem and electric energy meter;

Local communication channel simulation subsystem connects acquisition terminal and electric energy meter respectively; Be used for the channel characteristics of the local communication channel of simulation, the signal that transmits between acquisition terminal and the electric energy meter is carried out local communication channel characteristics processing;

Electric energy meter connects local communication channel simulation subsystem; Mutual for carry out signal by described local communication channel simulation subsystem and acquisition terminal;

The power conditioner subsystem is connected with electric energy meter with master station computer, telecommunication channel simulation subsystem, local communication channel simulation subsystem, acquisition terminal respectively, is used for providing electric energy and matched impedance, and isolates interference noise.

Preferably, described communication channel analogue system also comprises: the centralized control computer is connected with described telecommunication channel simulation subsystem, local communication channel simulation subsystem respectively; Be used for determining the channel characteristics of telecommunication channel, control described telecommunication channel simulation subsystem and carry out work; Determine the channel characteristics of local communication channel, control described local communication channel simulation subsystem and carry out work.

Preferably, described telecommunication channel simulation subsystem specifically comprises: wireless comprehensive test instrument, wireless public network channel simulation instrument and radio frequency attenuator; Wherein,

Wireless comprehensive test instrument connects described master station computer, wireless public network channel simulation instrument and radio frequency attenuator respectively; Be used for the signal that master station computer is sent is carried out sending to wireless public network channel simulation instrument after underlying protocol is handled, and the signal that wireless public network channel simulation instrument returns is carried out sending to radio frequency attenuator after descending wireless comprehensive test is handled; The signal that radio frequency attenuator is sent carries out sending to wireless public network channel simulation instrument after up-link wireless is combined the survey processing, and the signal that wireless public network channel simulation instrument returns is carried out sending to master station computer after underlying protocol is handled;

Wireless public network channel simulation instrument connects described wireless comprehensive test instrument; Be used for the channel characteristics of artificial antenna public network communication channel, the signal that described wireless comprehensive test instrument is sent carries out returning to wireless comprehensive test instrument after the processing of wireless public network communication channel characteristics;

Radio frequency attenuator connects described wireless comprehensive test instrument and acquisition terminal respectively; Be used for the attenuation characteristic of analog radio-frequency signal, the signal that transmits between described wireless comprehensive test instrument and the acquisition terminal is carried out attenuation processing.

Preferably, described centralized control computer connects wireless comprehensive test instrument, wireless public network channel simulation instrument and radio frequency attenuator respectively, described centralized control computer specifically is used for determining the channel characteristics of wireless public network communication channel, controls described wireless comprehensive test instrument, wireless public network channel simulation instrument and radio frequency attenuator and carries out work.

Preferably, described local communication channel simulation subsystem comprises: the secondary subsystem of short-range wireless communication channel emulation, and/or, the secondary subsystem of low-voltage powerline carrier communication channel simulator;

The secondary subsystem of short-range wireless communication channel emulation specifically comprises: circulator, signal analyzer, short-distance wireless channel simulation instrument and vector signal source, wherein,

Circulator connects described acquisition terminal, signal analyzer and electric energy meter respectively; The signal that is used for acquisition terminal is sent carries out sending to signal analyzer after the annular processes, and the signal that electric energy meter is sent carries out sending to acquisition terminal after the annular processes;

Signal analyzer connects described circulator and short-distance wireless channel simulation instrument respectively; Be used for the signal that circulator sends is carried out sending to short-distance wireless channel simulation instrument after the signal analysis integrated treatment;

Short-distance wireless channel simulation instrument connects described signal analyzer and vector signal source respectively; Be used for the channel characteristics of simulation short-range wireless communication channel, the signal that described signal analyzer is sent carries out sending to the vector signal source after the short-range wireless communication channel characterization;

The vector signal source connects described short-distance wireless channel simulation instrument and electric energy meter respectively; Be used for the signal that short-distance wireless channel simulation instrument sends is carried out sending to electric energy meter after vector signal is handled;

The secondary subsystem of low-voltage powerline carrier communication channel simulator specifically comprises: noise generator, power amplifier, coupler, programmable attenuator, high pass filter and impedance simulation network; Wherein,

Noise generator connects described power amplifier; Be used for the noise characteristic of simulation low-voltage powerline carrier communication channel with the generted noise signal, give described power amplifier with described noise signal transmission;

Power amplifier connects described noise generator and coupler respectively; Be used for receiving described noise signal, and described noise signal is carried out sending to coupler after the power amplification;

Coupler connects acquisition terminal, power amplifier and programmable attenuator respectively; Be used for signal that signal that acquisition terminal is sent and power amplifier the send back that is coupled and number send to programmable attenuator; After being coupled, the signal that the signal that programmable attenuator is sent and power amplifier send sends to acquisition terminal;

Programmable attenuator connects coupler and high pass filter respectively; The signal power decay characteristics that is used for simulation low-voltage powerline carrier communication channel is carried out power attenuation to the signal that transmits between coupler and the high pass filter and is handled;

High pass filter connects programmable attenuator and impedance simulation network respectively; Being used for that the signal that transmits between programmable attenuator and the impedance simulation network is carried out high-pass filtering handles;

Impedance simulation network connects high pass filter and electric energy meter respectively; The impedance characteristic that is used for simulation low-voltage powerline carrier communication channel carries out low voltage power line carrier channel impedance characteristic to the signal that transmits between high pass filter and the electric energy meter and handles.

Preferably, described centralized control computer connects described circulator, signal analyzer, short-distance wireless channel simulation instrument and vector signal source respectively, described centralized control computer specifically is used for determining the channel characteristics of short-range wireless communication channel, controls described circulator, signal analyzer, short-distance wireless channel simulation instrument and vector signal source and carries out work; And/or,

Described centralized control computer connects described noise generator, power amplifier, coupler, programmable attenuator, high pass filter and impedance simulation network respectively, described centralized control computer specifically is used for determining the channel characteristics of low-voltage powerline carrier communication channel, controls described noise generator, power amplifier, coupler, programmable attenuator, high pass filter and impedance simulation network and carries out work.

Preferably, described power conditioner subsystem comprises: first order power purification circuit and second level power purification circuit; Wherein,

First order power purification circuit connects external power source, master station computer, telecommunication channel simulation subsystem, local communication channel simulation subsystem, acquisition terminal and second level power purification circuit respectively; Be used to described master station computer, telecommunication channel simulation subsystem, local communication channel simulation subsystem and acquisition terminal that electric energy and matched impedance are provided, and the interference noise of isolating exterior power supply;

Second level power purification circuit connects first order power purification circuit and electric energy meter respectively; Be used to described electric energy meter that electric energy and matched impedance are provided.

Preferably, described first order power purification circuit specifically comprises: first three-phase isolation transformer, trap and first linear impedance stabilization network; Wherein,

First three-phase isolation transformer connects external power source, master station computer, telecommunication channel simulation subsystem, local communication channel simulation subsystem and trap respectively; The interference noise that is used for the isolating exterior power supply, for master station computer, telecommunication channel simulation subsystem, local communication channel simulation subsystem provide electric energy, the output electric power signal is given trap;

Trap connects first three-phase isolation transformer, first linear impedance stabilization network and second level power purification circuit respectively; Be used for isolating the clutter of master station computer, telecommunication channel simulation subsystem, local communication channel simulation subsystem and crosstalking, the output electric power signal is given first linear impedance stabilization network and second level power purification circuit;

First linear impedance stabilization network connects trap and acquisition terminal respectively; Be used to acquisition terminal that electric energy and matched impedance are provided;

Described second level power purification circuit specifically comprises: second three-phase isolation transformer, program control power source, the second linear impedance stabilization network summation current transformer; Wherein,

Second three-phase isolation transformer connects first order power purification circuit and program control power source respectively; Be used for receiving the electric power signal from first order power purification circuit, behind described electric power signal filtration high frequency clutter and noise, the output electric power signal is given program control power source;

Program control power source connects second three-phase isolation transformer, the second linear impedance stabilization network summation current transformer respectively; Be used for receiving the electric power signal from second three-phase isolation transformer, isolate the carrier signal between acquisition terminal and the electric energy meter, the output electric power signal is given the second linear impedance stabilization network summation current transformer;

Second linear impedance stabilization network connects program control power source and electric energy meter respectively; Be used for to receive the electric power signal from program control power source, for the voltage circuit of electric energy meter provides electric energy;

Current transformer connects program control power source and electric energy meter respectively; Be used for to receive the electric power signal from program control power source, for the current circuit of electric energy meter provides electric energy.

Preferably, described acquisition terminal is concentrator.

The communication channel analogue system of power information acquisition system provided by the invention, by telecommunication channel and local communication channel are carried out emulation, realized the simulation to all types communication channel characteristics in the power information acquisition system, can truly react the communication performance of whole power information acquisition system all sidedly, than prior art, the embodiment of the invention can accurately comprehensively be simulated every essential characteristic of power information acquisition system all types communication channel, and then can provide good reference information for the communication channel construction of actual power information acquisition system.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the block architecture diagram of existing power information acquisition system;

Fig. 2 A is the communication channel emulate system architecture block diagram of a kind of power information acquisition system of providing of the embodiment of the invention one;

Fig. 2 B is that the internal signal transmission of the communication channel analogue system of the power information acquisition system that provides of the embodiment of the invention one concerns schematic diagram;

Fig. 2 C is the communication channel emulate system architecture block diagram of the another kind of power information acquisition system that provides of the embodiment of the invention one;

Fig. 2 D is the concrete structure block diagram of the embodiment of the invention one medium-long range communication channel simulation subsystem;

Fig. 2 E is that the internal signal transmission of the embodiment of the invention one medium-long range communication channel simulation subsystem concerns schematic diagram;

Fig. 2 F is the concrete structure block diagram of local communication channel simulation subsystem in the embodiment of the invention one;

Fig. 2 G is that the internal signal transmission of the embodiment of the invention one short-distance and medium-distance radio communication channel simulation subsystem concerns schematic diagram;

Fig. 2 H is that the internal signal transmission of the embodiment of the invention one mesolow power line carrier communication channel simulator subsystem concerns schematic diagram;

Fig. 2 I is the structured flowchart of power conditioner subsystem in the embodiment of the invention one;

Fig. 2 J is the concrete structure block diagram of power conditioner subsystem in the embodiment of the invention one;

Fig. 3 is the communication channel analogue system configuration diagram of a kind of power information acquisition system of providing of the embodiment of the invention two.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.

In view of the power information acquisition system communication channel emulation technology of developing in the prior art can only be carried out emulation to the communication channel of independent a certain type, can not accurately comprehensively react power information acquisition system communication performance, the embodiment of the invention provides a kind of communication channel analogue system of power information acquisition system, in order to realization the channel characteristics of all types of communication channels in the power information acquisition system is simulated, thereby can accurately comprehensively react the communication performance of whole power information acquisition system, good reference information is provided for the communication channel construction in the actual power information acquisition system.The present invention is described in detail below in conjunction with accompanying drawing.

Embodiment one

Present embodiment provides a kind of communication channel analogue system of power information acquisition system, shown in Fig. 2 A, this analogue system comprises: master station computer 20, telecommunication channel simulation subsystem 21, acquisition terminal 22, local communication channel simulation subsystem 23, electric energy meter 24 and power conditioner subsystem 25; Wherein,

Master station computer 20 is connected with telecommunication channel simulation subsystem 21; Signal is mutual for being undertaken by described telecommunication channel simulation subsystem 21 and acquisition terminal 22, and determines the communication performance of described power information acquisition system according to the signal interaction results;

Telecommunication channel simulation subsystem 21 connects master station computer 20 and acquisition terminal 22 respectively; The channel characteristics that is used for the simulation telecommunication channel carries out the telecommunication channel characterization to the signal that transmits between master station computer 20 and the acquisition terminal 22;

Acquisition terminal 22 connects telecommunication channel simulation subsystem 21 and local communication channel simulation subsystem 23 respectively; It is mutual to be used for carrying out signal by described telecommunication channel simulation subsystem 21 and master station computer 20, and it is mutual to carry out signal by described local communication channel simulation subsystem 23 and electric energy meter 24;

Local communication channel simulation subsystem 23 connects acquisition terminal 22 and electric energy meter 24 respectively; The channel characteristics that is used for the local communication channel of simulation carries out local communication channel characteristics processing to the signal that transmits between acquisition terminal 22 and the electric energy meter 24;

Electric energy meter 24 connects local communication channel simulation subsystem 23; Mutual for carry out signal by described local communication channel simulation subsystem 23 and acquisition terminal 22;

Power conditioner subsystem 25 is connected with electric energy meter 24 with master station computer 20, telecommunication channel simulation subsystem 21, local communication channel simulation subsystem 23, acquisition terminal 22 respectively, is used for providing electric energy and matched impedance, and isolates interference noise.

Fig. 2 B is depicted as the analogue system internal signal transmission relation that present embodiment provides, and is specific as follows:

Master station computer 20 in down link, sends long-range initial downlink signal to telecommunication channel simulation subsystem 21; In up link, the remote response signal that receiving remote communication channel simulation subsystem 21 returns; And determine the communication performance of described power information acquisition system according to the remote response signal;

Telecommunication channel simulation subsystem 21, in down link, receive described long-range initial downlink signal, described long-range initial downlink signal is carried out obtaining long-range downstream signal after the descending telecommunication channel characterization, described long-range downstream signal is sent to acquisition terminal 22; In up link, receive the long-range initial communication signal that acquisition terminal 22 returns, described long-range initial communication signal is carried out obtaining the remote response signal after the up telecommunication channel characterization, described remote response signal is sent to described master station computer 20;

Acquisition terminal 22 in down link, receives described long-range downstream signal, generates local initial downlink signal according to described long-range downstream signal, and described local initial downlink signal is sent to local communication channel simulation subsystem 23; In up link, receive the local response signal that local communication channel simulation subsystem 23 returns, generate long-range initial communication signal according to described local response signal, described long-range initial communication signal is sent to telecommunication channel simulation subsystem 21;

Local communication channel simulation subsystem 23, in down link, receive described local initial downlink signal, described local initial downlink signal is carried out obtaining local downstream signal after the descending local communication channel characteristics processing, described local downstream signal is sent to electric energy meter 24; In up link, receive the local initial communication signal that electric energy meter 24 returns, described local initial communication signal is carried out obtaining local response signal after the up local communication channel characteristics processing, described local response signal is sent to acquisition terminal 22;

Electric energy meter 24 in down link, receives local downstream signal; Generate local initial communication signal according to described local downstream signal; In up link, described local initial communication signal is sent to local communication channel simulation subsystem 23.

The communication channel analogue system that present embodiment provides is that the power information acquisition system according to reality designs, wherein,

Master station computer 20 can adopt the computer equipment that is equipped with for test power information acquisition system master function software to realize, the function that is used for the actual power information acquisition system of simulation main website, in the communication channel analogue system that present embodiment provides, transmit signals by telecommunication channel simulation subsystem 21 between master station computer 20 and the acquisition terminal 22, transmit signals by local communication channel simulation subsystem 23 between acquisition terminal 22 and the electric energy meter 24, therefore, carry out signal when master station computer 20 by telecommunication channel simulation subsystem 21 and acquisition terminal 22 and obtain the remote response signal alternately, simultaneously, acquisition terminal 22 carries out signal when obtaining local response signal alternately by local communication channel simulation subsystem 23 and electric energy meter 24, owing to comprised the relevant information of local response signal in the remote response signal, therefore, the remote response signal itself has reflected the communication performance of telecommunication channel and the communication performance of local communication channel, master station computer 20 just can be judged the communication performance of telecommunication channel simulation subsystem 21 and local communication channel simulation subsystem 23 by the receiving remote response signal, namely judges the communication performance of whole power information acquisition system;

Acquisition terminal 22 and electric energy meter 24 can adopt power information acquisition terminal and intelligent electric energy meter commonly used in the actual power information acquisition system respectively, for example, type difference according to the user, acquisition terminal 22 can be the special change acquisition terminal that special change user power utilization information is gathered, perhaps, it is the distributed energy monitor terminal that the user's side distributed energy resource system that inserts utility network is carried out Detection ﹠ Controling, perhaps, be the centralized automatic meter-reading terminal that the low-voltage customer power information is gathered, for example concentrator; Electric energy meter 24 can be the common metering device with functions such as the storage of electricity price information about power, remaining sum warnings, also can be the electric energy meter that has the storage of electricity price information about power, remaining sum warning, communication and acquisition function simultaneously;

Telecommunication channel simulation subsystem 21 is used for the channel characteristics of the employed telecommunication channel of the actual power information acquisition system of simulation, local communication channel simulation subsystem 23 is used for the channel characteristics of the employed local communication channel of the actual power information acquisition system of simulation, for example, when the employed telecommunication channel of actual power information acquisition system is optical fiber private network communication channel/wireless public network communication channel/wireless private network communication channel, accordingly, telecommunication channel simulation subsystem 21 is used for the channel characteristics of analog optical fiber private network communication channel/wireless public network communication channel/wireless private network communication channel; When the employed local communication channel of actual power information acquisition system is RS-485 communication channel/low-voltage powerline carrier communication channel/micropower wireless communication channel, accordingly, local communication channel simulation subsystem 23 is used for the channel characteristics of simulation RS-485 communication channel/low-voltage powerline carrier communication channel/micropower wireless communication channel.

The communication channel analogue system that present embodiment provides, by telecommunication channel and local communication channel are carried out emulation, realized the simulation to all types communication channel characteristics in the power information acquisition system, can truly react the communication performance of whole power information acquisition system all sidedly, than prior art, the embodiment of the invention can accurately comprehensively be simulated every essential characteristic of power information acquisition system all types communication channel, and then can provide good reference information for the communication channel construction of actual power information acquisition system.

Shown in Fig. 2 C, the communication channel analogue system that present embodiment provides also can comprise: centralized control computer 26 is connected with described telecommunication channel simulation subsystem 21, local communication channel simulation subsystem 23 respectively; Be used for determining the channel characteristics of telecommunication channel, control described telecommunication channel simulation subsystem 21 and carry out work; Determine the channel characteristics of local communication channel, control described local communication channel simulation subsystem 23 and carry out work.

Concrete, in order accurately comprehensively to react the communication performance of actual power information acquisition system, need coordinate the channel characteristics analog operation of described communication channel analogue system medium-long range communication channel simulation subsystem 21 and local communication channel simulation subsystem 23, for this reason, present embodiment adopts the work of 26 pairs of telecommunication channel simulation subsystems 21 of centralized control computer and local communication channel simulation subsystem 23 to control, so that the two co-ordination, specific as follows: the telecommunication channel type that centralized control computer 26 adopts according to actual power information acquisition system, determine every channel characteristics of telecommunication channel, control on described telecommunication channel simulation subsystem 21 carries out, descending telecommunication channel characterization, and the local communication channel type that adopts according to actual power information acquisition system, determine every channel characteristics of local communication channel, control on described local communication channel simulation subsystem 23 carries out, descending local communication channel characteristics processing.Carry out centralized control and coordination by 26 pairs of telecommunication channel simulation subsystems 21 of centralized control computer and local communication channel simulation subsystem 23, can realize automation and the Long-distance Control of channel characteristics simulation, avoid manually-operated wrong hidden danger, reduced external interference.

Shown in Fig. 2 D, the telecommunication channel simulation subsystem 21 in the present embodiment can specifically comprise: wireless comprehensive test instrument 211, wireless public network channel simulation instrument 212 and radio frequency attenuator 213; Wherein,

Wireless comprehensive test instrument 211 connects described master station computer 20, wireless public network channel simulation instrument 212 and radio frequency attenuator 213 respectively; Be used for the signal that master station computer 20 is sent is carried out sending to wireless public network channel simulation instrument 212 after underlying protocol is handled, and the signal that wireless public network channel simulation instrument 212 returns is carried out sending to radio frequency attenuator 213 after descending wireless comprehensive test is handled; The signal that radio frequency attenuator 213 is sent carries out sending to wireless public network channel simulation instrument 212 after up-link wireless is combined the survey processing, and the signal that wireless public network channel simulation instrument 212 returns is carried out sending to master station computer 20 after underlying protocol is handled;

Wireless public network channel simulation instrument 212 connects described wireless comprehensive test instrument 211; Be used for the channel characteristics of artificial antenna public network communication channel, the signal that described wireless comprehensive test instrument 211 is sent carries out returning to wireless comprehensive test instrument 211 after the processing of wireless public network communication channel characteristics;

Radio frequency attenuator 213 connects described wireless comprehensive test instrument 211 and acquisition terminal 22 respectively; The attenuation characteristic that is used for analog radio-frequency signal is carried out attenuation processing to the signal that transmits between described wireless comprehensive test instrument 211 and the acquisition terminal 22.

Be depicted as structure annexation and the signal transmission relation of telecommunication channel simulation subsystem 21 as Fig. 2 E, specific as follows:

Wireless comprehensive test instrument 211 and master station computer 20 are connected by netting twine, and wireless comprehensive test instrument 211 and wireless public network channel simulation instrument 212 are connected by the high-speed figure bus, and wireless comprehensive test instrument 211 and radio frequency attenuator 213 are connected by radio frequency coaxial-cable; Radio frequency attenuator 213 is connected by the wireless public network interface with acquisition terminal 22;

Wireless comprehensive test instrument 211, in down link, receive the long-range initial downlink signal that master station computer 20 sends, described long-range initial downlink signal is carried out underlying protocol to be handled, be specially and carry out data link layer and physical layer protocol conversion process and obtain descending M signal 1, described descending M signal 1 is sent to wireless public network channel simulation instrument 212; Receive the descending M signal 2 that wireless public network channel simulation instrument 212 returns, described descending M signal 2 is carried out descending wireless comprehensive test to be handled, be specially and carry out digital-to-analogue conversion, coding, modulation, equilibrium, up-conversion, power amplification processing and obtain descending M signal 3, described descending M signal 3 is sent to radio frequency attenuator 213; In up link, the up M signal 1 that received RF attenuator 213 returns, described up M signal 1 is carried out up-link wireless combine the survey processing, be specially and carry out down-conversion, separate balanced, demodulation, decoding, analog-to-digital conversion process also obtains up M signal 2, described up M signal 2 is sent to wireless public network channel simulation instrument 212, receive the up M signal 3 that wireless public network channel simulation instrument 212 returns, described up M signal 3 is carried out underlying protocol to be handled, be specially and carry out data link layer and physical layer protocol conversion and obtain the remote response signal, described remote response signal is sent to main control computer;

Wireless public network channel simulation instrument 212, the channel characteristics that is used for artificial antenna public network communication channel, for example, simulation CDMA(Code Division Multiple Access, code division multiple access) or GPRS(General Packet Radio Service, general packet radio service) channel characteristics of communication channel such as, specifically, wireless public network channel simulation instrument 212 is in down link, receive the descending M signal 1 that wireless comprehensive test instrument 211 sends, described descending M signal 1 is carried out the processing of wireless public network communication channel characteristics, be specially that to carry out signal weak, the multipath stack, time-delay, Doppler phase shift is handled and is obtained descending M signal 2, and described descending M signal 2 is returned to wireless comprehensive test instrument 211; In up link, receive the up M signal 2 that wireless comprehensive test instrument 211 sends, described up M signal 2 is carried out the processing of wireless public network communication channel characteristics, be specially carry out that frequency selectivity is weak, multipath stack, time-delay, Doppler phase shift and noise processed and obtain up M signal 3, described up M signal 3 is returned to wireless comprehensive test instrument 211;

Radio frequency attenuator 213 in down link, receives the descending M signal 3 that wireless comprehensive test instrument 211 sends, and described descending M signal 3 is carried out the signal attenuation processing obtain long-range downstream signal, and described long-range downstream signal is sent to acquisition terminal 22; In up link, receive the long-range initial communication signal that acquisition terminal 22 sends, after described long-range initial communication signal is carried out signal attenuation and handles, obtain up M signal 1, and described up M signal 1 is sent to wireless comprehensive test instrument 211.

In conjunction with Fig. 2 C and Fig. 2 D, the communication channel analogue system that present embodiment provides can have following syndeton and data transmission relations: described centralized control computer 26 is connected wireless comprehensive test instrument 211, wireless public network channel simulation instrument 212 and radio frequency attenuator 213 respectively, the concrete channel characteristics that is used for determining the wireless public network communication channel is controlled described wireless comprehensive test instrument 211, wireless public network channel simulation instrument 212 and radio frequency attenuator 213 and is carried out work.

Shown in Fig. 2 F, the local communication channel simulation subsystem 23 in the present embodiment can specifically comprise: the secondary subsystem of short-range wireless communication channel emulation, and/or, the secondary subsystem of low-voltage powerline carrier communication channel simulator;

The secondary subsystem of short-range wireless communication channel emulation specifically comprises: circulator 231, signal analyzer 232, short-distance wireless channel simulation instrument 233 and vector signal source 234, wherein,

Circulator 231 connects described acquisition terminal 22, signal analyzer 232 and electric energy meter 24 respectively; Be used for the signal that acquisition terminal 22 sends is carried out sending to signal analyzer 232 after the annular processes, the signal that electric energy meter 24 is sent carries out sending to acquisition terminal 22 after the annular processes;

Signal analyzer 232 connects described circulator 231 and short-distance wireless channel simulation instrument 233 respectively; Be used for the signal that circulator 231 sends is carried out sending to short-distance wireless channel simulation instrument 233 after the signal analysis integrated treatment;

Short-distance wireless channel simulation instrument 233 connects described signal analyzer 232 and vector signal source 234 respectively; The channel characteristics that is used for the simulation short-range wireless communication channel, the signal that described signal analyzer 232 is sent carries out sending to vector signal source 234 after the short-range wireless communication channel characterization;

Vector signal source 234 connects described short-distance wireless channel simulation instrument 233 and electric energy meter 24 respectively; Be used for the signal that short-distance wireless channel simulation instrument 233 sends is carried out sending to electric energy meter 24 after vector signal is handled;

The secondary subsystem of low-voltage powerline carrier communication channel simulator specifically comprises: noise generator 235, power amplifier 236, coupler 237, programmable attenuator 238, high pass filter 239 and impedance simulation network 230; Wherein,

Noise generator 235 connects described power amplifier 236; Be used for the noise characteristic of simulation low-voltage powerline carrier communication channel with the generted noise signal, give described power amplifier 236 with described noise signal transmission;

Power amplifier 236 connects described noise generator 235 and coupler 237 respectively; Be used for receiving described noise signal, and described noise signal is carried out sending to coupler 237 after the power amplification;

Coupler 237 connects acquisition terminal 22, power amplifier 236 and programmable attenuator 238 respectively; Be used for signal that signal that acquisition terminal 22 is sent and power amplifier 236 the send back that is coupled and number send to programmable attenuator 238; After being coupled, the signal that the signal that programmable attenuator 238 is sent and power amplifier 236 send sends to acquisition terminal 22;

Programmable attenuator 238 connects coupler 237 and high pass filter 239 respectively; The signal power decay characteristics that is used for simulation low-voltage powerline carrier communication channel is carried out power attenuation to the signal that transmits between coupler 237 and the high pass filter 239 and is handled;

High pass filter 239 connects programmable attenuator 238 and impedance simulation network 230 respectively; Be used for the signal of transmission between programmable attenuator 238 and the impedance simulation network 230 is carried out the high-pass filtering processing;

Impedance simulation network 230 connects high pass filter 239 and electric energy meter 24 respectively; The impedance characteristic that is used for simulation low-voltage powerline carrier communication channel carries out low voltage power line carrier channel impedance characteristic to the signal that transmits between high pass filter 239 and the electric energy meter 24 and handles.

Be depicted as structure connected mode and the signal transmission relation of the secondary subsystem of short-range wireless communication channel emulation as Fig. 2 G, specific as follows:

Circulator 231 and acquisition terminal 22 are connected by netting twine, circulator 231 and signal analyzer 232 are connected by radio frequency coaxial-cable, signal analyzer 232 and short-distance wireless channel simulation instrument 233 are connected by the high-speed figure bus, short-distance wireless channel simulation instrument 233 is connected by the high-speed figure bus with vector signal source 234, vector signal source 234 and electric energy meter 24 are connected by coaxial cable for high frequency, and electric energy meter 24 and circulator 231 are connected by radio frequency coaxial-cable.

Circulator 231 in down link, receives the local initial downlink signal that acquisition terminal 22 sends, and described local initial downlink signal is carried out obtaining descending M signal A1 after the annular processes, and descending M signal A1 is sent to signal analyzer 232; In up link, receive the local initial communication signal A that electric energy meter 24 sends, described local initial communication signal A is carried out obtaining local response signal A after the annular processes, described local response signal A is sent to acquisition terminal 22;

Signal analyzer 232, in down link, receive the descending M signal A1 that circulator 231 sends, described descending M signal A1 is carried out the signal analysis integrated treatment, be specially descending M signal A1 is carried out down-conversion, separates the mediation analog-to-digital conversion process, and the radio-frequency performance that detects descending M signal A1, leading indicators such as center frequency point, band internal power, bandwidth, the band of noting interline signal A1 disturb outward, spuious, after above-mentioned processing, obtain descending M signal A2, described descending M signal A2 is sent to short-distance wireless channel simulation instrument 233;

Short-distance wireless channel simulation instrument 233, in down link, receive the descending M signal A2 that described signal analyzer 232 sends, described descending M signal A2 is carried out the short-range wireless communication channel characterization, be specially simulation frequency range 410～510MHz/2.4GHz, communication pattern is FSK modulating mode/PSK modulating mode/planisphere modulating mode/Zigbee modulating mode/Wifi modulating mode, and frequency selectivity is weak, the multipath stack, time-delay, Doppler phase shift, channel characteristics such as noise, obtain descending M signal A3 after descending M signal A2 handled, described descending M signal A3 is sent to vector signal source 234;

Vector signal source 234, in down link, receive the descending M signal A3 that described short-distance wireless channel simulation instrument 233 sends, described descending M signal A3 is carried out vector signal to be handled, be specially and carry out obtaining local downstream signal A after digital-to-analogue conversion, modulation, up-conversion, the power amplification processing, described local downstream signal A is sent to electric energy meter 24.

The structure connected mode and the internal signal transmission that are depicted as the secondary subsystem of low-voltage powerline carrier communication channel simulator as Fig. 2 H concern, and be specific as follows:

Acquisition terminal 22 is connected by the low-voltage power paired cable with coupler 237; Noise generator 235 and power amplifier 236 are connected by radio frequency coaxial-cable; Power amplifier 236 and coupler 237 are connected by radio frequency coaxial-cable; Coupler 237 and programmable attenuator 238 are connected by radio frequency coaxial-cable; Programmable attenuator 238 and high pass filter 239 are connected by radio frequency coaxial-cable; High pass filter 239 is connected by the low-voltage power paired cable with impedance simulation network 230; Impedance simulation network 230 is connected by the low-voltage power paired cable with electric energy meter 24;

Noise generator 235 is simulated the noise characteristic of low-voltage powerline carrier communication channel with the generted noise signal, and gives described power amplifier 236 with described noise signal transmission;

Power amplifier 236 receives described noise signal, and described noise signal is carried out forming high-power noise signal after the power amplification, and described high-power noise signal is sent to coupler 237;

Coupler 237, the high-power noise signal that received power amplifier 236 sends; In down link, receive the local initial downlink signal that acquisition terminal 22 sends, described local initial downlink signal and the coupling of high-power noise signal are obtained descending M signal B1, described descending M signal B1 is sent to programmable attenuator 238; In up link, receive the up M signal B3 that programmable attenuator 238 sends, described up M signal B3 and the coupling of high-power noise signal are obtained local response signal B, described local response signal B is sent to acquisition terminal 22;

Programmable attenuator 238 in down link, receives the descending M signal B1 that coupler 237 sends, and described descending M signal B1 is carried out obtaining descending M signal B2 after power attenuation is handled, and described descending M signal B2 is sent to high pass filter 239; In up link, receive the up M signal B2 that high pass filter 239 sends, described up M signal B2 is carried out obtaining up M signal B3 after power attenuation is handled, described up M signal B3 is sent to coupler 237;

High pass filter 239, in down link, receive the descending M signal B2 that programmable attenuator 238 sends, described descending M signal B2 is carried out the high-pass filtering processing obtain descending M signal B3, described descending M signal B3 is sent to impedance simulation network 230; In up link, receive the up M signal B1 that described impedance simulation network 230 sends, described up M signal B1 is carried out the high-pass filtering processing obtain up M signal B2, described up M signal B2 is sent to programmable attenuator 238;

Impedance simulation network 230, in down link, receive the descending M signal B3 that high pass filter 239 sends, described descending M signal B3 is carried out the processing of low voltage power line carrier channel impedance characteristic obtain local downstream signal B, described local downstream signal B is sent to electric energy meter 24; In up link, receive the local initial communication signal B that electric energy meter 24 sends, described local initial communication signal B is carried out the processing of low voltage power line carrier channel impedance characteristic obtain up M signal B1, described up M signal B1 is sent to high pass filter 239.

In conjunction with Fig. 2 C and Fig. 2 F, the communication channel analogue system that present embodiment provides can have following syndeton and data transmission relations:

Described centralized control computer 26 connects described circulator 231, signal analyzer 232, short-distance wireless channel simulation instrument 233 and vector signal source 234 respectively, the concrete channel characteristics that is used for determining short-range wireless communication channel is controlled described circulator 231, signal analyzer 232, short-distance wireless channel simulation instrument 233 and vector signal source 234 and is carried out work; And/or,

Described centralized control computer 26 connects described noise generator 235, power amplifier 236, coupler 237, programmable attenuator 238, high pass filter 239 and impedance simulation network 230 respectively, the concrete channel characteristics that is used for determining the low-voltage powerline carrier communication channel is controlled described noise generator 235, power amplifier 236, coupler 237, programmable attenuator 238, high pass filter 239 and impedance simulation network 230 and is carried out work.

Shown in Fig. 2 I, the power conditioner subsystem 25 in the present embodiment can comprise: first order power purification circuit and second level power purification circuit; Wherein,

First order power purification circuit connects external power source, master station computer 20, telecommunication channel simulation subsystem 21, local communication channel simulation subsystem 23, acquisition terminal 22 and second level power purification circuit respectively; Be used to described master station computer 20, telecommunication channel simulation subsystem 21, local communication channel simulation subsystem 23 and acquisition terminal 22 that electric energy and matched impedance are provided, and the interference noise of isolating exterior power supply;

Second level power purification circuit connects first order power purification circuit and electric energy meter 24 respectively; Be used to described electric energy meter 24 that electric energy and matched impedance are provided.

Present embodiment is by adopting two-stage power purification circuit, can realize disturbing to external world the effective isolation with noise, simultaneously for system provides matched impedance, can realize the good electrical isolation of acquisition terminal and electric energy meter.

Shown in Fig. 2 J, described first order power purification circuit can specifically comprise: first three-phase isolation transformer 251, trap 252 and first linear impedance stabilization network 253; Wherein,

First three-phase isolation transformer 251 connects external power source, master station computer 20, telecommunication channel simulation subsystem 21, local communication channel simulation subsystem 23 and trap 252 respectively; The interference noise that is used for the isolating exterior power supply, for master station computer 20, telecommunication channel simulation subsystem 21, local communication channel simulation subsystem 23 provide electric energy, the output electric power signal is given trap 252;

Trap 252 connects first three-phase isolation transformer 251, first linear impedance stabilization network 253 and second level power purification circuit respectively; Be used for isolating the clutter of master station computer 20, telecommunication channel simulation subsystem 21, local communication channel simulation subsystem 23 and crosstalking, the output electric power signal is given first linear impedance stabilization network 253 and second level power purification circuit;

First linear impedance stabilization network 253 connects trap 252 and acquisition terminal 22 respectively; Be used to acquisition terminal 22 that electric energy and matched impedance are provided;

Described second level power purification circuit can specifically comprise: second three-phase isolation transformer 254, program control power source 255, second linear impedance stabilization network, 256 summation current transformers 257; Wherein,

Second three-phase isolation transformer 254 connects first order power purification circuit and program control power source 255 respectively; Be used for receiving the electric power signal from first order power purification circuit, behind described electric power signal filtration high frequency clutter and noise, the output electric power signal is given program control power source 255;

Program control power source 255 connects second three-phase isolation transformer 254, second linear impedance stabilization network, 256 summation current transformers 257 respectively; Be used for receiving the electric power signal from second three-phase isolation transformer 254, isolate the carrier signal between acquisition terminal 22 and the electric energy meter 24, the output electric power signal is given second linear impedance stabilization network, 256 summation current transformers 257;

Second linear impedance stabilization network 256 connects program control power source 255 and electric energy meter 24 respectively; Be used for to receive the electric power signal from program control power source 255, for the voltage circuit of electric energy meter 24 provides electric energy;

Current transformer 257 connects program control power source 255 and electric energy meter 24 respectively; Be used for to receive the electric power signal from program control power source 255, for the current circuit of electric energy meter 24 provides electric energy.

Need to prove; in the communication channel analogue system of power information acquisition system provided by the invention; the telecommunication channel simulation subsystem can be simulated power information acquisition system various telecommunication channels commonly used; local communication channel simulation subsystem can be simulated power information acquisition system various local communication channel commonly used; namely; the present invention does not do concrete restriction to the communication channel that telecommunication channel simulation subsystem and local communication channel simulation subsystem are simulated; the embodiment of the invention is with telecommunication channel simulation subsystem artificial antenna public network communication channel; and be that the present invention will be described for example with local communication channel simulation subsystem simulation short-range wireless communication channel and/or low-voltage powerline carrier communication channel; those skilled in the art are understood that; the above only is specific embodiments of the invention; and be not intended to limit the scope of the invention; within the spirit and principles in the present invention all; any modification of making; be equal to replacement; improve etc., all should be included within protection scope of the present invention.

Embodiment two

Present embodiment is example with low-voltage customer power information acquisition system, a kind of communication channel analogue system of power information acquisition system is provided, as shown in Figure 3, this communication channel analogue system comprises: master station computer 301, centralized control computer 302, concentrator 303, short-distance wireless electric energy table 304, low voltage power line carrier electric energy meter 305, wireless comprehensive test instrument 306, wireless public network channel simulation instrument 307, radio frequency attenuator 308, circulator 309, signal analyzer 310, short-distance wireless channel simulation instrument 311, vector signal source 312, noise generator 313, power amplifier 314, coupler 315, programmable attenuator 316, high pass filter 317, impedance simulation network 318, first three-phase isolation transformer 319, trap 320, first linear impedance stabilization network 321, second three-phase isolation transformer 322, program control power source 323, second linear impedance stabilization network, 324 summation current transformers 325;

In the communication channel analogue system that this enforcement provides, wireless comprehensive test instrument 306, wireless public network channel simulation instrument 307 and the radio frequency attenuator 308 common telecommunication channel simulation subsystems of forming, the channel characteristics that is used for simulating GPRS wireless public network communication channel; Wherein, master station computer 301 and wireless comprehensive test instrument 306 are connected by netting twine; Wireless comprehensive test instrument 306 and radio frequency attenuator 308 are connected by wireless public network; Wireless comprehensive test instrument 306 and wireless public network channel simulation instrument 307 are connected by the high-speed figure bus; Radio frequency attenuator 308 is connected by the GPRS interface with concentrator 303;

Circulator 309, signal analyzer 310, short-distance wireless channel simulation instrument 311 and the vector signal source 312 common secondary subsystems of short-range wireless communication channel emulation of forming, the channel characteristics that is used for simulating short-range wireless communication channel; Wherein, concentrator 303 and circulator 309 are connected by netting twine; Circulator 309 and signal analyzer 310 are connected by radio frequency coaxial-cable; Signal analyzer 310 and short-distance wireless channel simulation instrument 311 are connected by the high-speed figure bus; Short-distance wireless channel simulation instrument 311 is connected by the high-speed figure bus with vector signal source 312; Vector signal source 312 is connected by coaxial cable for high frequency with short-distance wireless electric energy table 304; Short-distance wireless electric energy table 304 and circulator 309 are connected by radio frequency coaxial-cable;

Noise generator 313, power amplifier 314, coupler 315, programmable attenuator 316, high pass filter 317, the impedance simulation network 318 common secondary subsystems of low-voltage powerline carrier communication channel simulator of forming are for the channel characteristics of simulation low-voltage powerline carrier communication channel; Wherein, noise generator 313 and power amplifier 314 are connected by radio frequency coaxial-cable; Power amplifier 314 and coupler 315 are connected by radio frequency coaxial-cable; Coupler 315 is connected by radio frequency coaxial-cable with first linear impedance stabilization network 321; Coupler 315 and programmable attenuator 316 are connected by radio frequency coaxial-cable; Programmable attenuator 316 and high pass filter 317 are connected by radio frequency coaxial-cable; High pass filter 317 is connected by the low-voltage power paired cable with impedance simulation network 318; Impedance simulation network 318 is connected by the low-voltage power paired cable with low voltage power line carrier electric energy meter 305;

First three-phase isolation transformer 319, trap 320, first linear impedance stabilization network 321, second three-phase isolation transformer 322, program control power source 323, second linear impedance stabilization network, 324 summation current transformers, the 325 common power conditioner subsystems of forming; Wherein, first three-phase isolation transformer 319 is connected with trap 320; Trap 320 is connected with first linear impedance stabilization network 321; First linear impedance stabilization network 321 is connected with second three-phase isolation transformer 322; Second three-phase isolation transformer 322 is connected with program control power source 323; Program control power source 323 is connected with second linear impedance stabilization network, 324 summation current transformers 325 respectively; Second linear impedance stabilization network 324 is connected with impedance simulation network 318; Current transformer 325 is connected with low voltage power line carrier electric energy meter 305;

In addition, centralized control computer 302 connects wireless comprehensive test instrument 306, wireless public network channel simulation instrument 307, radio frequency attenuator 308, circulator 309, signal analyzer 310, short-distance wireless channel simulation instrument 311, vector signal source 312, noise generator 313, power amplifier 314, programmable attenuator 316 and impedance simulation network 318 respectively, is used for described respectively device is coordinated and controlled;

First three-phase isolation transformer 319 also is connected with other equipment except concentrator 30, low voltage power line carrier electric energy meter 305 in this communication channel analogue system, for it provides electric energy; First linear impedance stabilization network 321 also is connected with concentrator 303, for it provides electric energy; Second linear impedance stabilization network 324 is by the voltage circuit power supply of impedance simulation network 318 to low voltage power line carrier electric energy meter 305; Current transformer 325 is to the current circuit power supply of low voltage power line carrier electric energy meter 305.

The communication channel analogue system of the power information acquisition system that present embodiment provides, its course of work is as follows:

Step 1, master station computer 301 send long-range initial downlink signal to the telecommunication channel simulation subsystem of being made up of jointly wireless comprehensive test instrument 306, wireless public network channel simulation instrument 307 and radio frequency attenuator 308;

Step 2, described telecommunication channel simulation subsystem carries out the channel characteristics processing of GPRS wireless public network communication channel to long-range initial downlink signal, obtains long-range downstream signal, and is transferred to concentrator 303;

Step 3, concentrator 303 receiving remote downstream signals, and generate local initial downlink signal according to long-range downstream signal, should send to respectively by circulator 309 by this locality initial downlink signal, signal analyzer 310, short-distance wireless channel simulation instrument 311 and the vector signal source 312 common secondary subsystems of forming of short-range wireless communication channel emulation, and, by noise generator 313, power amplifier 314, coupler 315, programmable attenuator 316, high pass filter 317, the impedance simulation network 318 common secondary subsystems of forming of low-voltage powerline carrier communication channel simulator;

Step 4, after the secondary subsystem of described short-range wireless communication channel emulation carries out the short-range wireless communication channel characterization to local initial downlink signal, obtain the local downstream signal corresponding to short-range wireless communication channel, and be transferred to short-distance wireless electric energy table 304; Simultaneously, after the secondary subsystem of described low-voltage powerline carrier communication channel simulator carries out the processing of low-voltage powerline carrier communication channel characteristics to local initial downlink signal, obtain the local downstream signal corresponding to the low-voltage powerline carrier communication channel, and be transferred to low voltage power line carrier electric energy meter 305;

Step 5, short-distance wireless electric energy table 304 receives the local downstream signal corresponding to short-range wireless communication channel, and generate local initial communication signal corresponding to short-range wireless communication channel according to the reception condition of this signal, send to the secondary subsystem of described short-range wireless communication channel emulation then; Simultaneously, the local downstream signal that low voltage power line carrier electric energy meter 305 receives corresponding to the low-voltage powerline carrier communication channel, and generate local initial communication signal corresponding to the low-voltage powerline carrier communication channel according to the reception condition of this signal, and send to the secondary subsystem of described communication channel emulation;

Step 6, behind the local initial communication signal of the secondary subsystem reception of described short-range wireless communication channel emulation corresponding to short-range wireless communication channel, it is carried out the short-range wireless communication channel characterization, obtain the local response signal corresponding to short-range wireless communication channel, and be transferred to concentrator 303; Simultaneously, the secondary subsystem of described low-voltage powerline carrier communication channel simulator receives the local initial communication signal corresponding to the low-voltage powerline carrier communication channel, it is carried out the processing of low-voltage powerline carrier communication channel characteristics, obtain the local response signal corresponding to the low-voltage powerline carrier communication channel, and be transferred to concentrator 303;

Step 7, concentrator 303 receives described local response signal corresponding to short-range wireless communication channel and corresponding to the local response signal of low-voltage powerline carrier communication channel, generate the integrated local response signal according to described two kinds of local response signals, and send to described telecommunication channel simulation subsystem;

Step 8, described telecommunication channel simulation subsystem carries out the channel characteristics processing of GPRS wireless public network communication channel to the integrated local response signal, obtains the remote response signal, and the remote response signal is sent to master station computer 301;

Step 9, master station computer 301 receiving remote response signals, and according to the remote response signal communication performance of whole power information Acquisition Circuit is assessed.

In the above-mentioned course of work, the concrete processing that wireless comprehensive test instrument 306, wireless public network channel simulation instrument 307, radio frequency attenuator 308, circulator 309, signal analyzer 310, short-distance wireless channel simulation instrument 311, vector signal source 312, noise generator 313, power amplifier 314, coupler 315, programmable attenuator 316,

high pass filter

317 and 318 pairs of corresponding signals of impedance simulation network are done can not repeat them here referring to each installs the concrete processing that signal is done among the embodiment one.

In the above-mentioned course of work, concentrator 303 generates local initial downlink signal according to long-range downstream signal, relatively poor when the channel quality of telecommunication channel, make that concentrator 303 did not receive long-range downstream signal when long-range initial downlink dropout that master station computer sends or distortion were serious, perhaps, the long-range downstream signal distortion that concentrator 303 receives is serious, and is corresponding, and concentrator 303 just can not generate local initial downlink signal, perhaps, generate the higher local initial downlink signal of the error rate; Opposite, better when the channel quality of telecommunication channel, concentrator 303 will generate the low local initial downlink signal of the error rate; That is to say that local initial downlink signal itself has reflected the channel quality of telecommunication channel;

Short-distance wireless electric energy table 304 receives the local downstream signal corresponding to short-range wireless communication channel, and according to the local initial communication signal of this signal generation corresponding to short-range wireless communication channel, when the communication quality of short-range wireless communication channel is relatively poor, short-distance wireless electric energy table 304 will not receive the local downstream signal corresponding to short-range wireless communication channel, perhaps, the local downstream signal distortion corresponding to short-range wireless communication channel that short-distance wireless electric energy table 304 receives is serious, accordingly, short-distance wireless electric energy table 304 just can not generate the local initial communication signal corresponding to short-range wireless communication channel, perhaps, generate the higher local initial communication signal corresponding to short-range wireless communication channel of the error rate; Opposite, better when the channel quality of short-range wireless communication channel, short-distance wireless electric energy table 304 will generate the low local initial communication signal corresponding to short-range wireless communication channel of the error rate; That is to say, itself reflected the channel quality of short-range wireless communication channel corresponding to the local initial communication signal of short-range wireless communication channel;

Similarly, the local downstream signal that low voltage power line carrier electric energy meter 305 receives corresponding to the low-voltage powerline carrier communication channel, and according to the local initial communication signal of this signal generation corresponding to the low-voltage powerline carrier communication channel, when the communication quality of low-voltage powerline carrier communication channel is relatively poor, low voltage power line carrier electric energy meter 305 will not receive the local downstream signal corresponding to the low-voltage powerline carrier communication channel, perhaps, the local downstream signal distortion corresponding to the low-voltage powerline carrier communication channel that low voltage power line carrier electric energy meter 305 receives is serious, accordingly, low voltage power line carrier electric energy meter 305 just can not generate local initial communication signal, perhaps, generate the higher local initial communication signal of the error rate; Opposite, better when the channel quality of low-voltage powerline carrier communication channel, low voltage power line carrier electric energy meter 305 will generate the low local initial communication signal of the error rate; That is to say, itself reflected the channel quality of low-voltage powerline carrier communication channel corresponding to the local initial communication signal of low-voltage powerline carrier communication channel;

Further, concentrator 303 receives described local response signal corresponding to short-range wireless communication channel and corresponding to the local response signal of low-voltage powerline carrier communication channel, generate the integrated local response signal according to described two kinds of local response signals, therefore, integrated local response signal itself has reflected the channel quality of short-range wireless communication channel and low-voltage powerline carrier communication channel;

Finally, master station computer 301 receiving remote response signals, because remote response signal itself has just reflected the channel quality of telecommunication channel (present embodiment is GPRS wireless public network communication channel) and local communication channel (present embodiment is short-range wireless communication channel and low-voltage powerline carrier communication channel), thus, master station computer 301 just can realize purpose that the communication performance of whole power information Acquisition Circuit is assessed according to the remote response signal.

In sum, the communication channel analogue system of the power information acquisition system that provides of the embodiment of the invention comprises following beneficial effect:

(1) system can the comprehensive simulated telecommunication channel and the channel characteristics of local communication channel, thereby the communication performance that can reflect whole power information acquisition system truely and accurately is for the communication channel construction of actual power information acquisition system provides good reference information;

(2) by adopting two-stage power purification circuit, can realize disturbing to external world the effective isolation with noise, simultaneously for system provides matched impedance, can realize the good electrical isolation of acquisition terminal and electric energy meter;

(3) adopt the centralized control computer that each device in the system is carried out centralized control and coordination, can realize automation and the Long-distance Control of channel characteristics simulation, avoided manually-operated wrong hidden danger, reduced external interference;

(4) whole system all adopts common on the market instrument and equipment, is convenient to assembly and disassembly, and cost is low, is convenient to produce in batches and apply.

Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; and be not intended to limit the scope of the invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. the communication channel analogue system of a power information acquisition system is characterized in that, comprising: master station computer, telecommunication channel simulation subsystem, local communication channel simulation subsystem, power conditioner subsystem, acquisition terminal and electric energy meter; Wherein,

2. communication channel analogue system as claimed in claim 1 is characterized in that, also comprises: the centralized control computer is connected with described telecommunication channel simulation subsystem, local communication channel simulation subsystem respectively; Be used for determining the channel characteristics of telecommunication channel, control described telecommunication channel simulation subsystem and carry out work; Determine the channel characteristics of local communication channel, control described local communication channel simulation subsystem and carry out work.

3. communication channel analogue system as claimed in claim 2 is characterized in that, described telecommunication channel simulation subsystem specifically comprises: wireless comprehensive test instrument, wireless public network channel simulation instrument and radio frequency attenuator; Wherein,

4. communication channel analogue system as claimed in claim 3, it is characterized in that, described centralized control computer connects wireless comprehensive test instrument, wireless public network channel simulation instrument and radio frequency attenuator respectively, described centralized control computer specifically is used for determining the channel characteristics of wireless public network communication channel, controls described wireless comprehensive test instrument, wireless public network channel simulation instrument and radio frequency attenuator and carries out work.

5. communication channel analogue system as claimed in claim 2 is characterized in that, described local communication channel simulation subsystem comprises: the secondary subsystem of short-range wireless communication channel emulation, and/or, the secondary subsystem of low-voltage powerline carrier communication channel simulator;

Signal analyzer connects described circulator and short-distance wireless channel simulation instrument respectively; The signal that is used for circulator is sent carries out sending to short-distance wireless channel simulation instrument after the signal analysis integrated treatment;

6. communication channel analogue system as claimed in claim 5 is characterized in that,

Described centralized control computer connects described circulator, signal analyzer, short-distance wireless channel simulation instrument and vector signal source respectively, described centralized control computer specifically is used for determining the channel characteristics of short-range wireless communication channel, controls described circulator, signal analyzer, short-distance wireless channel simulation instrument and vector signal source and carries out work; And/or,

7. communication channel analogue system as claimed in claim 1 is characterized in that, described power conditioner subsystem comprises: first order power purification circuit and second level power purification circuit; Wherein,

8. communication channel analogue system as claimed in claim 7 is characterized in that,

Described first order power purification circuit specifically comprises: first three-phase isolation transformer, trap and first linear impedance stabilization network; Wherein,

9. as the arbitrary described communication channel analogue system of claim 1～8, it is characterized in that described acquisition terminal is concentrator.