CN103346846B - Communication channel stimulation system of electricity consumption information collection system - Google Patents
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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
Technical field
The present invention relates to technical field of power systems, concrete, relate to a kind of communication channel stimulation system of power information acquisition system.
Background technology
Power information acquisition system is the system gathering the power information of power consumer, process and monitor in real time, realizes the functions such as the automatic collection of power information, metering exception monitoring, electric energy quality monitoring, electrical energy consumption analysis and management, relevant information are issued, distributed energy is monitored, the information interaction of intelligent power equipment.
Power information acquisition system is formed primarily of electric energy meter, acquisition terminal, communication channel and main website; Wherein, electric energy meter is the metering device with functions such as precision is high, intelligence expense control, the storage of electricity price information about power, remaining sum warning, remote information transmission; Acquisition terminal is the equipment to electric energy meter information gathering, can be divided into by application places types such as specially becoming acquisition terminal, centralized automatic meter-reading terminal (comprising concentrator, collector), distributed energy monitor terminal; Main website performs the Data Collection task of acquisition terminal, realizes the equipment of the concentrated storage of power information, management and analysis.
The communication channel of power information acquisition system can be divided into telecommunication channel and local communi-cation channel two kinds; Wherein, telecommunication channel is for carrying out the data transfer communications between main station system and acquisition terminal, and the communication mode that current telecommunication channel is conventional has optical fiber private network communication, wireless public network communication (GPRS/CDMA), wireless private network communication etc.; Local communi-cation channel is used for the data transfer communications between acquisition terminal and electric energy meter, and the communication mode that current local communi-cation channel is conventional has RS-485 communication, low-voltage powerline carrier communication, micropower wireless communication etc.
Be illustrated in figure 1 a kind of power information acquisition system schematic diagram common at present, comprise: common electric energy meter 101, collector 200, the electric energy meter 102 of embedded communication/acquisition function, concentrator 300, main website 400, wherein, be connected by RS-485 line between collector 200 with common electric energy meter 101, the electric energy meter 102 of collector 200 and embedded communication/acquisition function is connected by local communi-cation channel with between concentrator 300, is connected between concentrator 300 with main website 400 by telecommunication channel.
In the construction of power information acquisition system, stable, reliable, real-time, safe communication mode is selected to be the key ensureing system safety stable operation, directly affect main website and acquisition terminal, the reliability communicated between acquisition terminal with electric energy meter and collection 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 the communication performance of communication channel in power information acquisition system can be passed judgment on, some analogue systems for communication channel in power information acquisition system have been had to occur in prior art, these analogue systems can only emulate (system that such as can only emulate low-voltage powerline carrier communication channel) the communication channel of independent a certain type mostly, but the power information acquisition system of reality relates to multiple communication channel usually simultaneously, want the communication performance of true comprehensively reaction power information acquisition system, need a kind of overall analogue system that comprehensively can cover various communication channel in power information acquisition system of exploitation badly.
Summary of the invention
The main purpose of the embodiment of the present invention is the communication channel stimulation system providing a kind of power information acquisition system, can only emulate the communication channel of independent a certain type to solve the power information acquisition system communication channel emulation technology developed in prior art, accurately comprehensively can not react the defect of power information acquisition system communication performance.
To achieve these goals, the embodiment of the present invention provides the communication channel stimulation system of power information acquisition system, comprising: master station computer, telecommunication channel simulation subsystem, local communi-cation channel simulation subsystem, power conditioner subsystem, acquisition terminal and electric energy meter; Wherein,
Master station computer, is connected with telecommunication channel simulation subsystem; Mutual for being carried out signal by described telecommunication channel simulation subsystem and acquisition terminal, and the communication performance of described power information acquisition system is determined according to signal interaction results;
Telecommunication channel simulation subsystem, connects master station computer and acquisition terminal respectively; For simulating the channel characteristics of telecommunication channel, telecommunication channel characterization is carried out to the signal transmitted between master station computer and acquisition terminal;
Acquisition terminal, connects telecommunication channel simulation subsystem and local communi-cation channel simulation subsystem respectively; Mutual for being carried out signal by described telecommunication channel simulation subsystem and master station computer, carry out signal by described local communi-cation channel simulation subsystem and electric energy meter mutual;
Local communi-cation channel simulation subsystem, connects acquisition terminal and electric energy meter respectively; For simulating the channel characteristics of local communi-cation channel, local communi-cation channel characterization is carried out to the signal transmitted between acquisition terminal and electric energy meter;
Electric energy meter, connects local communi-cation channel simulation subsystem; Mutual for being carried out signal by described local communi-cation channel simulation subsystem and acquisition terminal;
Power conditioner subsystem, is connected with master station computer, telecommunication channel simulation subsystem, local communi-cation channel simulation subsystem, acquisition terminal and electric energy meter respectively, for providing electric energy and matched impedance, and isolates interference noise.
Preferably, described communication channel stimulation system, also comprises: centralized control computer, is connected respectively with described telecommunication channel simulation subsystem, local communi-cation channel simulation subsystem; For determining the channel characteristics of telecommunication channel, controlling described telecommunication channel simulation subsystem and carrying out work; Determine the channel characteristics of local communi-cation channel, control described local communi-cation 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; Send to wireless public network channel simulation instrument after signal for master station computer being sent carries out underlying protocol process, and send to radio frequency attenuator after the signal that wireless public network channel simulation instrument returns is carried out descending wireless comprehensive test process; The signal sent by radio frequency attenuator carries out sending to wireless public network channel simulation instrument after up-link wireless combines survey process, and sends to master station computer after the signal that wireless public network channel simulation instrument returns is carried out underlying protocol process;
Wireless public network channel simulation instrument, connects described wireless comprehensive test instrument; For the channel characteristics of artificial antenna public network communication channel, the signal sent by described wireless comprehensive test instrument returns to wireless comprehensive test instrument after carrying out the process of wireless public network communication channel characteristics;
Radio frequency attenuator, connects described wireless comprehensive test instrument and acquisition terminal respectively; For the attenuation characteristic of analog radio-frequency signal, attenuation processing is carried out to the signal transmitted between described wireless comprehensive test instrument and acquisition terminal.
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 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 communi-cation channel simulation subsystem comprises: short-range wireless communication channel emulates secondary subsystem, and/or, the secondary subsystem of low-voltage powerline carrier communication channel simulator;
Short-range wireless communication channel emulates secondary subsystem and specifically comprises: circulator, signal analyzer, short range wireless channel analog meter and vector signal source, wherein,
Circulator, connects described acquisition terminal, signal analyzer and electric energy meter respectively; Send to signal analyzer after signal for being sent by acquisition terminal carries out annular processes, the signal sent by electric energy meter sends to acquisition terminal after carrying out annular processes;
Signal analyzer, connects described circulator and short range wireless channel analog meter respectively; Short range wireless channel analog meter is sent to after signal for being sent by circulator carries out signal analysis integrated treatment;
Short range wireless channel analog meter, connects described signal analyzer and vector signal source respectively; For simulating the channel characteristics of short-range wireless communication channel, after the signal sent by described signal analyzer carries out short-range wireless communication channel characterization, send to vector signal source;
Vector signal source, connects described short range wireless channel analog meter and electric energy meter respectively; Electric energy meter is sent to after signal for being sent by short range wireless channel analog meter carries out vector sensor signal processing;
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; For simulating the noise characteristic of low-voltage powerline carrier communication channel with generted noise signal, give described power amplifier by described noise signal transmission;
Power amplifier, connects described noise generator and coupler respectively; For receiving described noise signal, and send to coupler after described noise signal is carried out power amplification;
Coupler, connects acquisition terminal, power amplifier and programmable attenuator respectively; Number programmable attenuator is sent to after the signal sent for the signal that sent by acquisition terminal and power amplifier carries out coupling; Acquisition terminal is sent to after the signal that the signal sent by programmable attenuator and power amplifier send is coupled;
Programmable attenuator, respectively butt coupling device and high pass filter; For simulating the signal power decay characteristics of low-voltage powerline carrier communication channel, power attenuation process is carried out to the signal transmitted between coupler and high pass filter;
High pass filter, connects programmable attenuator and impedance simulation network respectively; For carrying out high-pass filtering process to the signal transmitted between programmable attenuator and impedance simulation network;
Impedance simulation network, connects high pass filter and electric energy meter respectively; For simulating the impedance characteristic of low-voltage powerline carrier communication channel, the process of LV-PLC channel impedance operator is carried out to the signal transmitted between high pass filter and electric energy meter.
Preferably, described centralized control computer connects described circulator, signal analyzer, short range wireless channel analog meter and vector signal source respectively, described centralized control computer, specifically for determining the channel characteristics of short-range wireless communication channel, controls described circulator, signal analyzer, short range wireless channel analog meter 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 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 communi-cation channel simulation subsystem, acquisition terminal and second level power purification circuit respectively; For providing electric energy and matched impedance for described master station computer, telecommunication channel simulation subsystem, local communi-cation channel simulation subsystem and acquisition terminal, 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; For providing electric energy and matched impedance for described electric energy meter.
Preferably, described first order power purification circuit specifically comprises: the first three-phase isolation transformer, trap and the first linear impedance stabilization network; Wherein,
First three-phase isolation transformer, connects external power source, master station computer, telecommunication channel simulation subsystem, local communi-cation channel simulation subsystem and trap respectively; For the interference noise of isolating exterior power supply, for master station computer, telecommunication channel simulation subsystem, local communi-cation channel simulation subsystem provide electric energy, export electric power signal to trap;
Trap, connects the first three-phase isolation transformer, the first linear impedance stabilization network and second level power purification circuit respectively; For isolating master station computer, telecommunication channel simulation subsystem, the clutter of local communi-cation channel simulation subsystem and crosstalk, export electric power signal to the first linear impedance stabilization network and second level power purification circuit;
First linear impedance stabilization network, connects trap and acquisition terminal respectively; For providing electric energy and matched impedance for acquisition terminal;
Described second level power purification circuit specifically comprises: the second three-phase isolation transformer, program controled 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 controled power source respectively; For receiving the electric power signal from first order power purification circuit, after described electric power signal filter high-frequency clutter and noise, export electric power signal to program controled power source;
Program controled power source, connects the second three-phase isolation transformer, the second linear impedance stabilization network summation current transformer respectively; For receiving the electric power signal from the second three-phase isolation transformer, the carrier signal between isolation acquisition terminal and electric energy meter, exports electric power signal to the second linear impedance stabilization network summation current transformer;
Second linear impedance stabilization network, connects program controled power source and electric energy meter respectively; For receiving the electric power signal from program controled power source, for the voltage circuit of electric energy meter provides electric energy;
Current transformer, connects program controled power source and electric energy meter respectively; For receiving the electric power signal from program controled power source, for the current circuit of electric energy meter provides electric energy.
Preferably, described acquisition terminal is concentrator.
The communication channel stimulation system of power information acquisition system provided by the invention, by emulating telecommunication channel and local communi-cation channel, achieve the simulation to all types communication channel characteristics in power information acquisition system, truly can react the communication performance of whole power information acquisition system all sidedly, compared to prior art, the embodiment of the present invention accurately comprehensively can simulate every essential characteristic of power information acquisition system all types communication channel, and then good reference information can be provided for the communication channel construction of actual power information acquisition system.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained 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 stimulation system structured flowchart of a kind of power information acquisition system that the embodiment of the present invention one provides;
Fig. 2 B is the internal signal transmission relation schematic diagram of the communication channel stimulation system of the power information acquisition system that the embodiment of the present invention one provides;
Fig. 2 C is the communication channel stimulation system structured flowchart of the another kind of power information acquisition system that the embodiment of the present invention one provides;
Fig. 2 D is the concrete structure block diagram of the embodiment of the present invention one medium-long range communication channel simulation subsystem;
Fig. 2 E is the internal signal transmission relation schematic diagram of the embodiment of the present invention one medium-long range communication channel simulation subsystem;
Fig. 2 F is the concrete structure block diagram of local communi-cation channel simulation subsystem in the embodiment of the present invention one;
Fig. 2 G is the internal signal transmission relation schematic diagram of the embodiment of the present invention one short-distance and medium-distance radio communication channel simulation subsystem;
Fig. 2 H is the internal signal transmission relation schematic diagram of the embodiment of the present invention one mesolow power line carrier communication channel simulator subsystem;
Fig. 2 I is the structured flowchart of power conditioner subsystem in the embodiment of the present invention one;
Fig. 2 J is the concrete structure block diagram of power conditioner subsystem in the embodiment of the present invention one;
Fig. 3 is the communication channel stimulation system configuration diagram of a kind of power information acquisition system that the embodiment of the present invention two provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In view of the power information acquisition system communication channel emulation technology developed in prior art can only emulate the communication channel of independent a certain type, accurately can not comprehensively react power information acquisition system communication performance, embodiments provide a kind of communication channel stimulation system of power information acquisition system, in order to realize simulating the channel characteristics of communication channel all types of in power information acquisition system, thus accurately comprehensively can react the communication performance of whole power information acquisition system, good reference information is provided to the communication channel construction in actual power information acquisition system.Below in conjunction with accompanying drawing, the present invention is described in detail.
Embodiment one
The present embodiment provides a kind of communication channel stimulation system of power information acquisition system, as shown in Figure 2 A, this analogue system comprises: master station computer 20, telecommunication channel simulation subsystem 21, acquisition terminal 22, local communi-cation 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; Mutual for being carried out signal by described telecommunication channel simulation subsystem 21 and acquisition terminal 22, and the communication performance of described power information acquisition system is determined according to signal interaction results;
Telecommunication channel simulation subsystem 21, connects master station computer 20 and acquisition terminal 22 respectively; For simulating the channel characteristics of telecommunication channel, telecommunication channel characterization is carried out to the signal of transmission between master station computer 20 and acquisition terminal 22;
Acquisition terminal 22, connects telecommunication channel simulation subsystem 21 and local communi-cation channel simulation subsystem 23 respectively; Mutual for being carried out signal by described telecommunication channel simulation subsystem 21 and master station computer 20, carry out signal by described local communi-cation channel simulation subsystem 23 and electric energy meter 24 mutual;
Local communi-cation channel simulation subsystem 23, connects acquisition terminal 22 and electric energy meter 24 respectively; For simulating the channel characteristics of local communi-cation channel, local communi-cation channel characterization is carried out to the signal of transmission between acquisition terminal 22 and electric energy meter 24;
Electric energy meter 24, connects local communi-cation channel simulation subsystem 23; Mutual for being carried out signal by described local communi-cation channel simulation subsystem 23 and acquisition terminal 22;
Power conditioner subsystem 25, is connected with master station computer 20, telecommunication channel simulation subsystem 21, local communi-cation channel simulation subsystem 23, acquisition terminal 22 and electric energy meter 24 respectively, 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 the present embodiment provides, specific as follows:
Master station computer 20, in the downlink, sends long-range initial downlink signal to telecommunication channel simulation subsystem 21; In the uplink, the remote response signal that telecommunication channel simulation subsystem 21 returns is received; And the communication performance of described power information acquisition system is determined according to remote response signal;
Telecommunication channel simulation subsystem 21, in the downlink, receive described long-range initial downlink signal, obtain long-range downstream signal after descending telecommunication channel characterization is carried out to described long-range initial downlink signal, described long-range downstream signal is sent to acquisition terminal 22; In the uplink, receive the long-range initial communication signal that acquisition terminal 22 returns, obtain remote response signal after up telecommunication channel characterization is carried out to described long-range initial communication signal, described remote response signal is sent to described master station computer 20;
Acquisition terminal 22, in the downlink, 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 communi-cation channel simulation subsystem 23; In the uplink, receive the local response signal that local communi-cation 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 communi-cation channel simulation subsystem 23, in the downlink, receive described local initial downlink signal, obtain local downstream signal after descending local communi-cation channel characterization is carried out to described local initial downlink signal, described local downstream signal is sent to electric energy meter 24; In the uplink, receive the local initial communication signal that electric energy meter 24 returns, obtain local response signal after up local communi-cation channel characterization is carried out to described local initial communication signal, described local response signal is sent to acquisition terminal 22;
Electric energy meter 24, in the downlink, receives local downstream signal; Local initial communication signal is generated according to described local downstream signal; In the uplink, described local initial communication signal is sent to local communi-cation channel simulation subsystem 23.
The communication channel stimulation system that the present embodiment provides carries out designing according to the power information acquisition system of reality, wherein,
Master station computer 20 can adopt the computer equipment be provided with for testing power information acquisition system master function software to realize, for simulating the function of main website in actual power information acquisition system, in the communication channel stimulation system that the present embodiment provides, by telecommunication channel simulation subsystem 21 signal transmission between master station computer 20 and acquisition terminal 22, by local communi-cation channel simulation subsystem 23 signal transmission between acquisition terminal 22 and 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 remote response signal alternately, simultaneously, acquisition terminal 22 by local communi-cation channel simulation subsystem 23 and electric energy meter 24 carry out signal obtain local response signal alternately time, owing to containing the relevant information of local response signal in remote response signal, therefore, remote response signal itself reflects the communication performance of telecommunication channel and the communication performance of local communi-cation channel, master station computer 20 just judges the communication performance of telecommunication channel simulation subsystem 21 and local communi-cation channel simulation subsystem 23 by receiving remote response signal, namely the communication performance of whole power information acquisition system is judged,
Acquisition terminal 22 and electric energy meter 24 can adopt power information acquisition terminal conventional in actual power information acquisition system and intelligent electric energy meter respectively, such as, different according to the type of user, acquisition terminal 22 can be the special change acquisition terminal to specially becoming user power utilization information, or, it is the distributed energy monitor terminal user side distributed energy resource system of access utility network being carried out to Detection & Controling, or, the centralized automatic meter-reading terminal that low-voltage customer power information is gathered, such as 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 have that electricity price information about power stores, remaining sum is reported to the police simultaneously, communication and the electric energy meter of acquisition function;
The channel characteristics of telecommunication channel of telecommunication channel simulation subsystem 21 for simulating actual power information acquisition system and using, the channel characteristics of local communi-cation channel of local communi-cation channel simulation subsystem 23 for simulating actual power information acquisition system and using, such as, when the telecommunication channel that actual power information acquisition system uses is for optical fiber private network communication channel/wireless public network communication channel/wireless private network communication channel, accordingly, telecommunication channel simulation subsystem 21 is for the channel characteristics of analog optical fiber private network communication channel/wireless public network communication channel/wireless private network communication channel, when the local communi-cation channel that actual power information acquisition system uses is for RS-485 communication channel/low-voltage powerline carrier communication channel/micropower wireless communication channel, accordingly, local communi-cation channel simulation subsystem 23 is for simulating the channel characteristics of RS-485 communication channel/low-voltage powerline carrier communication channel/micropower wireless communication channel.
The communication channel stimulation system that the present embodiment provides, by emulating telecommunication channel and local communi-cation channel, achieve the simulation to all types communication channel characteristics in power information acquisition system, truly can react the communication performance of whole power information acquisition system all sidedly, compared to prior art, the embodiment of the present invention accurately comprehensively can simulate 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.
As shown in Figure 2 C, the communication channel stimulation system that the present embodiment provides also can comprise: centralized control computer 26, is connected respectively with described telecommunication channel simulation subsystem 21, local communi-cation channel simulation subsystem 23; For determining the channel characteristics of telecommunication channel, controlling described telecommunication channel simulation subsystem 21 and carrying out work; Determine the channel characteristics of local communi-cation channel, control described local communi-cation channel simulation subsystem 23 and carry out work.
Concrete, in order to the communication performance of actual power information acquisition system accurately comprehensively can be reacted, need the channel characteristics analog operation coordinating described communication channel stimulation system medium-long range communication channel simulation subsystem 21 and local communi-cation channel simulation subsystem 23, for this reason, the present embodiment adopts the work of centralized control computer 26 pairs of telecommunication channel simulation subsystems 21 and local communi-cation channel simulation subsystem 23 to control, to make 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 according to the local communi-cation channel type that actual power information acquisition system adopts, determine every channel characteristics of local communi-cation channel, control on described local communi-cation channel simulation subsystem 23 carries out, descending local communi-cation channel characterization.Centralized control and coordination is carried out by centralized control computer 26 pairs of telecommunication channel simulation subsystems 21 and local communi-cation channel simulation subsystem 23, automation and the Long-distance Control of channel characteristics simulation can be realized, avoid manually-operated wrong hidden danger, reduce external interference.
As shown in Figure 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; Send to wireless public network channel simulation instrument 212 after signal for master station computer 20 being sent carries out underlying protocol process, and send to radio frequency attenuator 213 after the signal that wireless public network channel simulation instrument 212 returns is carried out descending wireless comprehensive test process; The signal sent by radio frequency attenuator 213 carries out sending to wireless public network channel simulation instrument 212 after up-link wireless combines survey process, and sends to master station computer 20 after the signal that wireless public network channel simulation instrument 212 returns is carried out underlying protocol process;
Wireless public network channel simulation instrument 212, connects described wireless comprehensive test instrument 211; For the channel characteristics of artificial antenna public network communication channel, after the signal that described wireless comprehensive test instrument 211 sends is carried out the process of wireless public network communication channel characteristics, return to wireless comprehensive test instrument 211;
Radio frequency attenuator 213, connects described wireless comprehensive test instrument 211 and acquisition terminal 22 respectively; For the attenuation characteristic of analog radio-frequency signal, attenuation processing is carried out to the signal transmitted between described wireless comprehensive test instrument 211 and acquisition terminal 22.
Be anatomical connectivity relation and the Signal transmissions relation of telecommunication channel simulation subsystem 21 as shown in Figure 2 E, specific as follows:
Wireless comprehensive test instrument 211 is connected by netting twine with master station computer 20, and wireless comprehensive test instrument 211 is connected by high-speed figure bus with wireless public network channel simulation instrument 212, and wireless comprehensive test instrument 211 is connected by radio frequency coaxial-cable with radio frequency attenuator 213; Radio frequency attenuator 213 is connected by wireless public network interface with acquisition terminal 22;
Wireless comprehensive test instrument 211, in the downlink, receive the long-range initial downlink signal that master station computer 20 sends, underlying protocol process is carried out to described long-range initial downlink signal, 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, descending wireless comprehensive test process is carried out to described descending M signal 2, be specially and carry out digital-to-analogue conversion, coding, modulation, equilibrium, up-conversion, power amplification process obtain descending M signal 3, described descending M signal 3 is sent to radio frequency attenuator 213, in the uplink, the up M signal 1 that received RF attenuator 213 returns, up-link wireless is carried out to described up M signal 1 and combines survey process, 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, underlying protocol process is carried out to described up M signal 3, be specially and carry out data link layer and physical layer protocol is changed and obtains remote response signal, described remote response signal is sent to main control computer,
Wireless public network channel simulation instrument 212, for the channel characteristics of artificial antenna public network communication channel, such as, simulation CDMA(Code Division Multiple Access, code division multiple access) or GPRS(General Packet Radio Service, general packet radio service) etc. the channel characteristics of communication channel, specifically, wireless public network channel simulation instrument 212 in the downlink, receive the descending M signal 1 that wireless comprehensive test instrument 211 sends, the process of wireless public network communication channel characteristics is carried out to described descending M signal 1, be specially that to carry out signal weak, multipath superposes, time delay, Doppler phase shift process also obtains descending M signal 2, described descending M signal 2 is returned to wireless comprehensive test instrument 211, in the uplink, receive the up M signal 2 that wireless comprehensive test instrument 211 sends, the process of wireless public network communication channel characteristics is carried out to described up M signal 2, be specially carry out that frequency selectivity is weak, multipath superposition, time delay, Doppler phase shift and noise processed obtain up M signal 3, described up M signal 3 is returned to wireless comprehensive test instrument 211,
Radio frequency attenuator 213, in the downlink, receives the descending M signal 3 that wireless comprehensive test instrument 211 sends, carries out signal attenuation process and obtain long-range downstream signal, described long-range downstream signal is sent to acquisition terminal 22 to described descending M signal 3; In the uplink, receive the long-range initial communication signal that acquisition terminal 22 sends, after signal attenuation process is carried out to described long-range initial communication signal, obtain up M signal 1, and described up M signal 1 is sent to wireless comprehensive test instrument 211.
Composition graphs 2C and Fig. 2 D, the communication channel stimulation system that the 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, specifically for determining the channel characteristics of wireless public network communication channel, controlling described wireless comprehensive test instrument 211, wireless public network channel simulation instrument 212 and radio frequency attenuator 213 and carrying out work.
As shown in Figure 2 F, the local communi-cation channel simulation subsystem 23 in the present embodiment can specifically comprise: short-range wireless communication channel emulates secondary subsystem, and/or, the secondary subsystem of low-voltage powerline carrier communication channel simulator;
Short-range wireless communication channel emulates secondary subsystem and specifically comprises: circulator 231, signal analyzer 232, short range wireless channel analog meter 233 and vector signal source 234, wherein,
Circulator 231, connects described acquisition terminal 22, signal analyzer 232 and electric energy meter 24 respectively; Sending to signal analyzer 232 after signal for being sent by acquisition terminal 22 carries out annular processes, after the signal sent by electric energy meter 24 carries out annular processes, sending to acquisition terminal 22;
Signal analyzer 232, connects described circulator 231 and short range wireless channel analog meter 233 respectively; Short range wireless channel analog meter 233 is sent to after signal for being sent by circulator 231 carries out signal analysis integrated treatment;
Short range wireless channel analog meter 233, connects described signal analyzer 232 and vector signal source 234 respectively; For simulating the channel characteristics of short-range wireless communication channel, after the signal that described signal analyzer 232 sends is carried out short-range wireless communication channel characterization, send to vector signal source 234;
Vector signal source 234, connects described short range wireless channel analog meter 233 and electric energy meter 24 respectively; Electric energy meter 24 is sent to after signal for being sent by short range wireless channel analog meter 233 carries out vector sensor signal processing;
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; For simulating the noise characteristic of low-voltage powerline carrier communication channel with generted noise signal, give described power amplifier 236 by described noise signal transmission;
Power amplifier 236, connects described noise generator 235 and coupler 237 respectively; For receiving described noise signal, and send to coupler 237 after described noise signal is carried out power amplification;
Coupler 237, connects acquisition terminal 22, power amplifier 236 and programmable attenuator 238 respectively; Number programmable attenuator 238 is sent to after the signal sent for the signal that sent by acquisition terminal 22 and power amplifier 236 carries out coupling; Acquisition terminal 22 is sent to after the signal that the signal sent by programmable attenuator 238 and power amplifier 236 send is coupled;
Programmable attenuator 238, respectively butt coupling device 237 and high pass filter 239; For simulating the signal power decay characteristics of low-voltage powerline carrier communication channel, power attenuation process is carried out to the signal of transmission between coupler 237 and high pass filter 239;
High pass filter 239, connects programmable attenuator 238 and impedance simulation network 230 respectively; For carrying out high-pass filtering process to the signal of transmission between programmable attenuator 238 and impedance simulation network 230;
Impedance simulation network 230, connects high pass filter 239 and electric energy meter 24 respectively; For simulating the impedance characteristic of low-voltage powerline carrier communication channel, the process of LV-PLC channel impedance operator is carried out to the signal of transmission between high pass filter 239 and electric energy meter 24.
As shown in Figure 2 G for short-range wireless communication channel emulates structural union and the Signal transmissions relation of secondary subsystem, specific as follows:
Circulator 231 is connected by netting twine with acquisition terminal 22, circulator 231 is connected by radio frequency coaxial-cable with signal analyzer 232, signal analyzer 232 is connected by high-speed figure bus with short range wireless channel analog meter 233, short range wireless channel analog meter 233 is connected by high-speed figure bus with vector signal source 234, vector signal source 234 is connected by coaxial cable for high frequency with electric energy meter 24, and electric energy meter 24 is connected by radio frequency coaxial-cable with circulator 231.
Circulator 231, in the downlink, receives the local initial downlink signal that acquisition terminal 22 sends, obtains descending M signal A1, descending M signal A1 is sent to signal analyzer 232 to described local initial downlink signal after carrying out annular processes; In the uplink, receive the local initial communication signal A that electric energy meter 24 sends, obtain local response signal A after annular processes is carried out to described local initial communication signal A, described local response signal A is sent to acquisition terminal 22;
Signal analyzer 232, in the downlink, receive the descending M signal A1 that circulator 231 sends, signal analysis integrated treatment is carried out to described descending M signal A1, be specially and down-conversion, solution mediation analog-to-digital conversion process are carried out to descending M signal A1, and detect the radio-frequency performance of descending M signal A1, leading indicators such as recording the center frequency point of interline signal A1, be with internal power, bandwidth, band to disturb outward, be spuious, after above-mentioned process, obtain descending M signal A2, described descending M signal A2 is sent to short range wireless channel analog meter 233;
Short range wireless channel analog meter 233, in the downlink, receive the descending M signal A2 that described signal analyzer 232 sends, short-range wireless communication channel characterization is carried out to described descending M signal A2, 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, multipath superposes, time delay, Doppler phase shift, the channel characteristics such as noise, descending M signal A3 is obtained to after descending M signal A2 process, described descending M signal A3 is sent to vector signal source 234,
Vector signal source 234, in the downlink, receive the descending M signal A3 that described short range wireless channel analog meter 233 sends, vector sensor signal processing is carried out to described descending M signal A3, be specially after carrying out digital-to-analogue conversion, modulation, up-conversion, power amplification process and obtain local downstream signal A, described local downstream signal A is sent to electric energy meter 24.
Be structural union and the internal signal transmission relation of the secondary subsystem of low-voltage powerline carrier communication channel simulator as illustrated in figure 2h, specific as follows:
Acquisition terminal 22 is connected by low-voltage power paired cable with coupler 237; Noise generator 235 is connected by radio frequency coaxial-cable with power amplifier 236; Power amplifier 236 is connected by radio frequency coaxial-cable with coupler 237; Coupler 237 is connected by radio frequency coaxial-cable with programmable attenuator 238; Programmable attenuator 238 is connected by radio frequency coaxial-cable with high pass filter 239; High pass filter 239 is connected by low-voltage power paired cable with impedance simulation network 230; Impedance simulation network 230 is connected by low-voltage power paired cable with electric energy meter 24;
Noise generator 235, described noise signal transmission with generted noise signal, and is given described power amplifier 236 by the noise characteristic of simulation low-voltage powerline carrier communication channel;
Power amplifier 236, receives described noise signal, forms high-power noise signal after carrying out power amplification to described noise signal, 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 the downlink, 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 the uplink, 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 the downlink, receives the descending M signal B1 that coupler 237 sends, obtains descending M signal B2, described descending M signal B2 is sent to high pass filter 239 to described descending M signal B1 after carrying out power attenuation process; In the uplink, receive the up M signal B2 that high pass filter 239 sends, obtain up M signal B3 after power attenuation process is carried out to described up M signal B2, described up M signal B3 is sent to coupler 237;
High pass filter 239, in the downlink, receive the descending M signal B2 that programmable attenuator 238 sends, high-pass filtering process is carried out to described descending M signal B2 and obtains descending M signal B3, described descending M signal B3 is sent to impedance simulation network 230; In the uplink, receive the up M signal B1 that described impedance simulation network 230 sends, high-pass filtering process is carried out to described up M signal B1 and obtains up M signal B2, described up M signal B2 is sent to programmable attenuator 238;
Impedance simulation network 230, in the downlink, receive the descending M signal B3 that high pass filter 239 sends, the process of LV-PLC channel impedance operator is carried out to described descending M signal B3 and obtains local downstream signal B, described local downstream signal B is sent to electric energy meter 24; In the uplink, receive the local initial communication signal B that electric energy meter 24 sends, the process of LV-PLC channel impedance operator is carried out to described local initial communication signal B and obtains up M signal B1, described up M signal B1 is sent to high pass filter 239.
Composition graphs 2C and Fig. 2 F, the communication channel stimulation system that the present embodiment provides can have following syndeton and data transmission relations:
Described centralized control computer 26 connects described circulator 231, signal analyzer 232, short range wireless channel analog meter 233 and vector signal source 234 respectively, specifically for determining the channel characteristics of short-range wireless communication channel, controlling described circulator 231, signal analyzer 232, short range wireless channel analog meter 233 and vector signal source 234 and carrying 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, specifically for determining the channel characteristics of low-voltage powerline carrier communication channel, controlling described noise generator 235, power amplifier 236, coupler 237, programmable attenuator 238, high pass filter 239 and impedance simulation network 230 and carrying out work.
As shown in figure 2i, 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 communi-cation channel simulation subsystem 23, acquisition terminal 22 and second level power purification circuit respectively; For providing electric energy and matched impedance for described master station computer 20, telecommunication channel simulation subsystem 21, local communi-cation channel simulation subsystem 23 and acquisition terminal 22, 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; For providing electric energy and matched impedance for described electric energy meter 24.
The present embodiment is by adopting two-stage power purification circuit, and can realize disturbing the effective isolation with noise to external world, simultaneously for system provides matched impedance, the good electrical that can realize acquisition terminal and electric energy meter is isolated.
As shown in fig. 2j, described first order power purification circuit can specifically comprise: the first three-phase isolation transformer 251, trap 252 and the 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 communi-cation channel simulation subsystem 23 and trap 252 respectively; For the interference noise of isolating exterior power supply, for master station computer 20, telecommunication channel simulation subsystem 21, local communi-cation channel simulation subsystem 23 provide electric energy, export electric power signal to trap 252;
Trap 252, connects the first three-phase isolation transformer 251, first linear impedance stabilization network 253 and second level power purification circuit respectively; For isolating master station computer 20, telecommunication channel simulation subsystem 21, the clutter of local communi-cation channel simulation subsystem 23 and crosstalk, export electric power signal to the 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; For providing electric energy and matched impedance for acquisition terminal 22;
Described second level power purification circuit can specifically comprise: the second three-phase isolation transformer 254, program controled power source 255, second linear impedance stabilization network 256 summation current transformer 257; Wherein,
Second three-phase isolation transformer 254, connects first order power purification circuit and program controled power source 255 respectively; For receiving the electric power signal from first order power purification circuit, after described electric power signal filter high-frequency clutter and noise, export electric power signal to program controled power source 255;
Program controled power source 255, connects the second three-phase isolation transformer 254, second linear impedance stabilization network 256 summation current transformer 257 respectively; For receiving the electric power signal from the second three-phase isolation transformer 254, the carrier signal between isolation acquisition terminal 22 and electric energy meter 24, exports electric power signal to the second linear impedance stabilization network 256 summation current transformer 257;
Second linear impedance stabilization network 256, connects program controled power source 255 and electric energy meter 24 respectively; For receiving the electric power signal from program controled power source 255, for the voltage circuit of electric energy meter 24 provides electric energy;
Current transformer 257, connects program controled power source 255 and electric energy meter 24 respectively; For receiving the electric power signal from program controled power source 255, for the current circuit of electric energy meter 24 provides electric energy.
It should be noted that, in the communication channel stimulation system of power information acquisition system provided by the invention, telecommunication channel simulation subsystem can simulate the conventional various telecommunication channels of power information acquisition system, local communi-cation channel simulation subsystem can simulate the conventional various local communi-cation channel of power information acquisition system, namely, the present invention does not do concrete restriction to the communication channel that telecommunication channel simulation subsystem and local communi-cation channel simulation subsystem are simulated, the embodiment of the present invention is with telecommunication channel simulation subsystem artificial antenna public network communication channel, and for local communi-cation channel simulation subsystem simulation short-range wireless communication channel and/or low-voltage powerline carrier communication channel the present invention will be described, those skilled in the art are understood that, the foregoing is only specific embodiments of the invention, the protection range be not intended to limit the present invention, within the spirit and principles in the present invention all, any amendment of making, equivalent replacement, improve, all should be included within protection scope of the present invention.
Embodiment two
The present embodiment is for low-voltage customer power information acquisition system, a kind of communication channel stimulation system of power information acquisition system is provided, as shown in Figure 3, this communication channel stimulation 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 range wireless channel analog meter 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 controled power source 323, second linear impedance stabilization network 324 summation current transformer 325,
In the communication channel stimulation system that this enforcement provides, wireless comprehensive test instrument 306, wireless public network channel simulation instrument 307 and radio frequency attenuator 308 be composition telecommunication channel simulation subsystem jointly, for simulating the channel characteristics of GPRS wireless public network communication channel; Wherein, master station computer 301 is connected by netting twine with wireless comprehensive test instrument 306; Wireless comprehensive test instrument 306 is connected by wireless public network with radio frequency attenuator 308; Wireless comprehensive test instrument 306 is connected by high-speed figure bus with wireless public network channel simulation instrument 307; Radio frequency attenuator 308 is connected by GPRS interface with concentrator 303;
Circulator 309, signal analyzer 310, short range wireless channel analog meter 311 and vector signal source 312 jointly composition short-range wireless communication channel emulate secondary subsystem, for simulating the channel characteristics of short-range wireless communication channel; Wherein, concentrator 303 is connected by netting twine with circulator 309; Circulator 309 is connected by radio frequency coaxial-cable with signal analyzer 310; Signal analyzer 310 is connected by high-speed figure bus with short range wireless channel analog meter 311; Short range wireless channel analog meter 311 is connected by 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 is connected by radio frequency coaxial-cable with circulator 309;
Noise generator 313, power amplifier 314, coupler 315, programmable attenuator 316, high pass filter 317, impedance simulation network 318 be the secondary subsystem of composition low-voltage powerline carrier communication channel simulator jointly, for simulating the channel characteristics of low-voltage powerline carrier communication channel; Wherein, noise generator 313 is connected by radio frequency coaxial-cable with power amplifier 314; Power amplifier 314 is connected by radio frequency coaxial-cable with coupler 315; Coupler 315 is connected by radio frequency coaxial-cable with the first linear impedance stabilization network 321; Coupler 315 is connected by radio frequency coaxial-cable with programmable attenuator 316; Programmable attenuator 316 is connected by radio frequency coaxial-cable with high pass filter 317; High pass filter 317 is connected by low-voltage power paired cable with impedance simulation network 318; Impedance simulation network 318 is connected by 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 controled power source 323, second linear impedance stabilization network 324 summation current transformer 325 be composition power conditioner subsystem jointly; Wherein, the first three-phase isolation transformer 319 is connected with trap 320; Trap 320 is connected with the first linear impedance stabilization network 321; First linear impedance stabilization network 321 is connected with the second three-phase isolation transformer 322; Second three-phase isolation transformer 322 is connected with program controled power source 323; Program controled power source 323 is connected with the second linear impedance stabilization network 324 summation current transformer 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 range wireless channel analog meter 311, vector signal source 312, noise generator 313, power amplifier 314, programmable attenuator 316 and impedance simulation network 318 respectively, for coordinating described each device and control;
First three-phase isolation transformer 319 also with other equipment connections except concentrator 30, low voltage power line carrier electric energy meter 305 in this communication channel stimulation system, for it provides electric energy; First linear impedance stabilization network 321 is also connected with concentrator 303, for it provides electric energy; Second linear impedance stabilization network 324 is powered by the voltage circuit of impedance simulation network 318 to low voltage power line carrier electric energy meter 305; Current transformer 325 is powered to the current circuit of low voltage power line carrier electric energy meter 305.
The communication channel stimulation system of the power information acquisition system that the present embodiment provides, its course of work is as follows:
Step 1, master station computer 301 sends long-range initial downlink signal to the telecommunication channel simulation subsystem be jointly made up of 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 characterization process 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 receives long-range downstream signal, and generate local initial downlink signal according to long-range downstream signal, this local initial downlink signal is sent to by circulator 309 respectively, signal analyzer 310, the short-range wireless communication channel that short range wireless channel analog meter 311 and vector signal source 312 form jointly emulates secondary subsystem, and, by noise generator 313, power amplifier 314, coupler 315, programmable attenuator 316, high pass filter 317, the secondary subsystem of low-voltage powerline carrier communication channel simulator that impedance simulation network 318 forms jointly,
Step 4, described short-range wireless communication channel emulates after secondary subsystem carries out 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 process of low-voltage powerline carrier communication channel characterization to local initial downlink signal, obtain the local downstream signal corresponding to 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 according to the reception condition of this signal the local initial communication signal corresponding to short-range wireless communication channel, then send to described short-range wireless communication channel to emulate secondary subsystem; Simultaneously, low voltage power line carrier electric energy meter 305 receives the local downstream signal corresponding to low-voltage powerline carrier communication channel, and generate according to the reception condition of this signal the local initial communication signal corresponding to low-voltage powerline carrier communication channel, and described communication channel is sent to emulate secondary subsystem;
Step 6, described short-range wireless communication channel emulates the reception of secondary subsystem corresponding to after the local initial communication signal of short-range wireless communication channel, short-range wireless communication channel characterization is carried out to it, 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 low-voltage powerline carrier communication channel, the process of low-voltage powerline carrier communication channel characterization is carried out to it, obtain the local response signal corresponding to low-voltage powerline carrier communication channel, and be transferred to concentrator 303;
Step 7, concentrator 303 receives the described local response signal corresponding to short-range wireless communication channel and corresponds to the local response signal of low-voltage powerline carrier communication channel, generate comprehensive 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 characterization process of GPRS wireless public network communication channel to comprehensive local response signal, obtains remote response signal, and remote response signal is sent to master station computer 301;
Step 9, master station computer 301 receives remote response signal, and assesses according to the communication performance of remote response signal to whole power information Acquisition Circuit.
In the above-mentioned course of work, the concrete process that the concrete process that wireless comprehensive test instrument 306, wireless public network channel simulation instrument 307, radio frequency attenuator 308, circulator 309, signal analyzer 310, short range wireless channel analog meter 311, vector signal source 312, noise generator 313, power amplifier 314, coupler 315, programmable attenuator 316, high pass filter 317 and impedance simulation network 318 pairs of corresponding signals are done can be done signal see device each in embodiment one, does not repeat them here.
In the above-mentioned course of work, concentrator 303 generates local initial downlink signal according to long-range downstream signal, when the channel quality of telecommunication channel is poor, the long-range initial downlink dropout that master station computer is sent or distortion serious time, concentrator 303 does not receive long-range downstream signal, or, the long-range downstream signal distortion that concentrator 303 receives is serious, and accordingly, concentrator 303 would not generate local initial downlink signal, or, generate the local initial downlink signal that the error rate is higher; Contrary, when the channel quality of telecommunication channel is better, concentrator 303 will generate the low local initial downlink signal of the error rate; That is, local initial downlink signal itself reflects 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 the local initial communication signal corresponding to short-range wireless communication channel is generated according to this signal, when the communication quality of short-range wireless communication channel is poor, short-distance wireless electric energy table 304 will not receive the local downstream signal corresponding to short-range wireless communication channel, or, 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 would not generate the local initial communication signal corresponding to short-range wireless communication channel, or, generate the local initial communication signal corresponding to short-range wireless communication channel that the error rate is higher, contrary, when the channel quality of short-range wireless communication channel is better, 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, the channel quality of short-range wireless communication channel itself is reflected corresponding to the local initial communication signal of short-range wireless communication channel,
Similar, low voltage power line carrier electric energy meter 305 receives the local downstream signal corresponding to low-voltage powerline carrier communication channel, and the local initial communication signal corresponding to low-voltage powerline carrier communication channel is generated according to this signal, when the communication quality of low-voltage powerline carrier communication channel is poor, low voltage power line carrier electric energy meter 305 will not receive the local downstream signal corresponding to low-voltage powerline carrier communication channel, or, the local downstream signal distortion corresponding to 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 would not generate local initial communication signal, or, generate the local initial communication signal that the error rate is higher, contrary, when the channel quality of low-voltage powerline carrier communication channel is better, low voltage power line carrier electric energy meter 305 will generate the low local initial communication signal of the error rate, that is, the channel quality of low-voltage powerline carrier communication channel itself is reflected corresponding to the local initial communication signal of low-voltage powerline carrier communication channel,
Further, concentrator 303 receives the described local response signal corresponding to short-range wireless communication channel and corresponds to the local response signal of low-voltage powerline carrier communication channel, comprehensive local response signal is generated according to described two kinds of local response signals, therefore, comprehensive local response signal itself reflects the channel quality of short-range wireless communication channel and low-voltage powerline carrier communication channel;
Finally, master station computer 301 receives remote response signal, because remote response signal inherently reflects the channel quality of telecommunication channel (the present embodiment is GPRS wireless public network communication channel) and local communi-cation channel (the present embodiment is short-range wireless communication channel and low-voltage powerline carrier communication channel), thus, master station computer 301 just can realize according to remote response signal the object assessed the communication performance of whole power information Acquisition Circuit.
In sum, the communication channel stimulation system of power information acquisition system that the embodiment of the present invention provides comprises following beneficial effect:
(1) system can the channel characteristics of comprehensive simulated telecommunication channel and local communi-cation channel, thus the communication performance of whole power information acquisition system can be reflected truely and accurately, 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 the effective isolation with noise to external world, simultaneously for system provides matched impedance, the good electrical that can realize acquisition terminal and electric energy meter is isolated;
(3) adopt centralized control computer to carry out centralized control and coordination to each device in system, automation and the Long-distance Control of channel characteristics simulation can be realized, avoid manually-operated wrong hidden danger, reduce external interference;
(4) whole system all adopts instrument and equipment common on the market, is convenient to assembly and disassembly, and cost is low, is convenient to batch production and applies.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; the protection range be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. the communication channel stimulation system of a power information acquisition system, it is characterized in that, comprising: centralized control computer, master station computer, telecommunication channel simulation subsystem, local communi-cation channel simulation subsystem, power conditioner subsystem, acquisition terminal and electric energy meter; Wherein,
Master station computer, is connected with telecommunication channel simulation subsystem; Mutual for being carried out signal by described telecommunication channel simulation subsystem and acquisition terminal, and the communication performance of described power information acquisition system is determined according to signal interaction results;
Telecommunication channel simulation subsystem, connects master station computer and acquisition terminal respectively; For simulating the channel characteristics of telecommunication channel, telecommunication channel characterization is carried out to the signal transmitted between master station computer and acquisition terminal;
Acquisition terminal, connects telecommunication channel simulation subsystem and local communi-cation channel simulation subsystem respectively; Mutual for being carried out signal by described telecommunication channel simulation subsystem and master station computer, carry out signal by described local communi-cation channel simulation subsystem and electric energy meter mutual;
Local communi-cation channel simulation subsystem, connects acquisition terminal and electric energy meter respectively; For simulating the channel characteristics of local communi-cation channel, local communi-cation channel characterization is carried out to the signal transmitted between acquisition terminal and electric energy meter;
Electric energy meter, connects local communi-cation channel simulation subsystem; Mutual for being carried out signal by described local communi-cation channel simulation subsystem and acquisition terminal;
Power conditioner subsystem, is connected with master station computer, telecommunication channel simulation subsystem, local communi-cation channel simulation subsystem, acquisition terminal and electric energy meter respectively, for providing electric energy and matched impedance, and isolates interference noise;
Centralized control computer, is connected with described telecommunication channel simulation subsystem, local communi-cation channel simulation subsystem respectively; For determining the channel characteristics of telecommunication channel, controlling described telecommunication channel simulation subsystem and carrying out work; Determine the channel characteristics of local communi-cation channel, control described local communi-cation channel simulation subsystem and carry out work;
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; Send to wireless public network channel simulation instrument after signal for master station computer being sent carries out underlying protocol process, and send to radio frequency attenuator after the signal that wireless public network channel simulation instrument returns is carried out descending wireless comprehensive test process; The signal sent by radio frequency attenuator carries out sending to wireless public network channel simulation instrument after up-link wireless combines survey process, and sends to master station computer after the signal that wireless public network channel simulation instrument returns is carried out underlying protocol process;
Wireless public network channel simulation instrument, connects described wireless comprehensive test instrument; For the channel characteristics of artificial antenna public network communication channel, the signal sent by described wireless comprehensive test instrument returns to wireless comprehensive test instrument after carrying out the process of wireless public network communication channel characteristics;
Radio frequency attenuator, connects described wireless comprehensive test instrument and acquisition terminal respectively; For the attenuation characteristic of analog radio-frequency signal, attenuation processing is carried out to the signal transmitted between described wireless comprehensive test instrument and acquisition terminal.
2. communication channel stimulation system as claimed in claim 1, 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 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.
3. communication channel stimulation system as claimed in claim 1, it is characterized in that, described local communi-cation channel simulation subsystem comprises: short-range wireless communication channel emulates secondary subsystem;
Short-range wireless communication channel emulates secondary subsystem and specifically comprises: circulator, signal analyzer, short range wireless channel analog meter and vector signal source, wherein,
Circulator, connects described acquisition terminal, signal analyzer and electric energy meter respectively; Send to signal analyzer after signal for being sent by acquisition terminal carries out annular processes, the signal sent by electric energy meter sends to acquisition terminal after carrying out annular processes;
Signal analyzer, connects described circulator and short range wireless channel analog meter respectively; Short range wireless channel analog meter is sent to after signal for being sent by circulator carries out signal analysis integrated treatment;
Short range wireless channel analog meter, connects described signal analyzer and vector signal source respectively; For simulating the channel characteristics of short-range wireless communication channel, after the signal sent by described signal analyzer carries out short-range wireless communication channel characterization, send to vector signal source;
Vector signal source, connects described short range wireless channel analog meter and electric energy meter respectively; Electric energy meter is sent to after signal for being sent by short range wireless channel analog meter carries out vector sensor signal processing.
4. communication channel stimulation system as claimed in claim 3, it is characterized in that, described centralized control computer connects described circulator, signal analyzer, short range wireless channel analog meter and vector signal source respectively, described centralized control computer, specifically for determining the channel characteristics of short-range wireless communication channel, controls described circulator, signal analyzer, short range wireless channel analog meter and vector signal source and carries out work.
5. communication channel stimulation system as claimed in claim 1, it is characterized in that, described local communi-cation channel simulation subsystem comprises: the secondary subsystem of low-voltage powerline carrier communication channel simulator;
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; For simulating the noise characteristic of low-voltage powerline carrier communication channel with generted noise signal, give described power amplifier by described noise signal transmission;
Power amplifier, connects described noise generator and coupler respectively; For receiving described noise signal, and send to coupler after described noise signal is carried out power amplification;
Coupler, connects acquisition terminal, power amplifier and programmable attenuator respectively; Number programmable attenuator is sent to after the signal sent for the signal that sent by acquisition terminal and power amplifier carries out coupling; Acquisition terminal is sent to after the signal that the signal sent by programmable attenuator and power amplifier send is coupled;
Programmable attenuator, respectively butt coupling device and high pass filter; For simulating the signal power decay characteristics of low-voltage powerline carrier communication channel, power attenuation process is carried out to the signal transmitted between coupler and high pass filter;
High pass filter, connects programmable attenuator and impedance simulation network respectively; For carrying out high-pass filtering process to the signal transmitted between programmable attenuator and impedance simulation network;
Impedance simulation network, connects high pass filter and electric energy meter respectively; For simulating the impedance characteristic of low-voltage powerline carrier communication channel, the process of LV-PLC channel impedance operator is carried out to the signal transmitted between high pass filter and electric energy meter.
6. communication channel stimulation system as claimed in claim 5, it is characterized in that, 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 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.
7. communication channel stimulation system as claimed in claim 1, it is characterized in that, described local communi-cation channel simulation subsystem comprises: short-range wireless communication channel emulates secondary subsystem, and, the secondary subsystem of low-voltage powerline carrier communication channel simulator;
Short-range wireless communication channel emulates secondary subsystem and specifically comprises: circulator, signal analyzer, short range wireless channel analog meter and vector signal source, wherein,
Circulator, connects described acquisition terminal, signal analyzer and electric energy meter respectively; Send to signal analyzer after signal for being sent by acquisition terminal carries out annular processes, the signal sent by electric energy meter sends to acquisition terminal after carrying out annular processes;
Signal analyzer, connects described circulator and short range wireless channel analog meter respectively; Short range wireless channel analog meter is sent to after signal for being sent by circulator carries out signal analysis integrated treatment;
Short range wireless channel analog meter, connects described signal analyzer and vector signal source respectively; For simulating the channel characteristics of short-range wireless communication channel, after the signal sent by described signal analyzer carries out short-range wireless communication channel characterization, send to vector signal source;
Vector signal source, connects described short range wireless channel analog meter and electric energy meter respectively; Electric energy meter is sent to after signal for being sent by short range wireless channel analog meter carries out vector sensor signal processing;
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; For simulating the noise characteristic of low-voltage powerline carrier communication channel with generted noise signal, give described power amplifier by described noise signal transmission;
Power amplifier, connects described noise generator and coupler respectively; For receiving described noise signal, and send to coupler after described noise signal is carried out power amplification;
Coupler, connects acquisition terminal, power amplifier and programmable attenuator respectively; Number programmable attenuator is sent to after the signal sent for the signal that sent by acquisition terminal and power amplifier carries out coupling; Acquisition terminal is sent to after the signal that the signal sent by programmable attenuator and power amplifier send is coupled;
Programmable attenuator, respectively butt coupling device and high pass filter; For simulating the signal power decay characteristics of low-voltage powerline carrier communication channel, power attenuation process is carried out to the signal transmitted between coupler and high pass filter;
High pass filter, connects programmable attenuator and impedance simulation network respectively; For carrying out high-pass filtering process to the signal transmitted between programmable attenuator and impedance simulation network;
Impedance simulation network, connects high pass filter and electric energy meter respectively; For simulating the impedance characteristic of low-voltage powerline carrier communication channel, the process of LV-PLC channel impedance operator is carried out to the signal transmitted between high pass filter and electric energy meter.
8. communication channel stimulation system as claimed in claim 7, is characterized in that,
Described centralized control computer connects described circulator, signal analyzer, short range wireless channel analog meter and vector signal source respectively, described centralized control computer, specifically for determining the channel characteristics of short-range wireless communication channel, controls described circulator, signal analyzer, short range wireless channel analog meter and vector signal source and carries out work;
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 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.
9. communication channel stimulation system as claimed in claim 1, it is characterized in that, 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 communi-cation channel simulation subsystem, acquisition terminal and second level power purification circuit respectively; For providing electric energy and matched impedance for described master station computer, telecommunication channel simulation subsystem, local communi-cation channel simulation subsystem and acquisition terminal, 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; For providing electric energy and matched impedance for described electric energy meter.
10. communication channel stimulation system as claimed in claim 9, is characterized in that,
Described first order power purification circuit specifically comprises: the first three-phase isolation transformer, trap and the first linear impedance stabilization network; Wherein,
First three-phase isolation transformer, connects external power source, master station computer, telecommunication channel simulation subsystem, local communi-cation channel simulation subsystem and trap respectively; For the interference noise of isolating exterior power supply, for master station computer, telecommunication channel simulation subsystem, local communi-cation channel simulation subsystem provide electric energy, export electric power signal to trap;
Trap, connects the first three-phase isolation transformer, the first linear impedance stabilization network and second level power purification circuit respectively; For isolating master station computer, telecommunication channel simulation subsystem, the clutter of local communi-cation channel simulation subsystem and crosstalk, export electric power signal to the first linear impedance stabilization network and second level power purification circuit;
First linear impedance stabilization network, connects trap and acquisition terminal respectively; For providing electric energy and matched impedance for acquisition terminal;
Described second level power purification circuit specifically comprises: the second three-phase isolation transformer, program controled 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 controled power source respectively; For receiving the electric power signal from first order power purification circuit, after described electric power signal filter high-frequency clutter and noise, export electric power signal to program controled power source;
Program controled power source, connects the second three-phase isolation transformer, the second linear impedance stabilization network summation current transformer respectively; For receiving the electric power signal from the second three-phase isolation transformer, the carrier signal between isolation acquisition terminal and electric energy meter, exports electric power signal to the second linear impedance stabilization network summation current transformer;
Second linear impedance stabilization network, connects program controled power source and electric energy meter respectively; For receiving the electric power signal from program controled power source, for the voltage circuit of electric energy meter provides electric energy;
Current transformer, connects program controled power source and electric energy meter respectively; For receiving the electric power signal from program controled power source, for the current circuit of electric energy meter provides electric energy.
11. as arbitrary in claim 1 ~ 10 as described in communication channel stimulation system, it is characterized in that, described acquisition terminal is concentrator.
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