CN110493063A - The power line carrier multilevel network test macro injected and be wirelessly connected based on distributed noise - Google Patents

The power line carrier multilevel network test macro injected and be wirelessly connected based on distributed noise Download PDF

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Publication number
CN110493063A
CN110493063A CN201910817156.1A CN201910817156A CN110493063A CN 110493063 A CN110493063 A CN 110493063A CN 201910817156 A CN201910817156 A CN 201910817156A CN 110493063 A CN110493063 A CN 110493063A
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China
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carrier
network
test
module
communication
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CN201910817156.1A
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CN110493063B (en
Inventor
郝伟琦
王贤辉
赵东艳
王于波
肖德勇
李铮
秦亮亮
陈奎熹
王辰皓
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State Grid Corp of China SGCC
Beijing Smartchip Microelectronics Technology Co Ltd
National Network Information and Communication Industry Group Co Ltd
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State Grid Corp of China SGCC
Beijing Smartchip Microelectronics Technology Co Ltd
National Network Information and Communication Industry Group Co Ltd
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Priority to CN201910817156.1A priority Critical patent/CN110493063B/en
Publication of CN110493063A publication Critical patent/CN110493063A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B3/00Line transmission systems
    • H04B3/54Systems for transmission via power distribution lines
    • H04B3/544Setting up communications; Call and signalling arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/04Network management architectures or arrangements
    • H04L41/044Network management architectures or arrangements comprising hierarchical management structures
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08Configuration management of networks or network elements
    • H04L41/0803Configuration setting
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/12Discovery or management of network topologies
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/02Arrangements for optimising operational condition
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/06Testing, supervising or monitoring using simulated traffic
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W40/00Communication routing or communication path finding
    • H04W40/02Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/22Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The power line carrier multilevel network test macro that the invention discloses a kind of to be injected and be wirelessly connected based on distributed noise, it include: central control unit, multiple local side test cells, multiple table ends test cell and multiple route flap damping device networks, central control unit is communicated with each test cell and multiple route flap damping device networks;Local side test cell is tested carrier equipment for testing local side, and local side is tested central node of the carrier equipment as network in carrier communication network;Table end test cell is tested carrier equipment, relay node or terminal node as network for testing table end;Route flap damping device network is routed as the carrier communication of local side test cell and table end test cell, and each route flap damping device network can connect multiple test cells;Wherein, multiple local side test cells, each test cell in the test cell of multiple table ends are built-in with noise injection module, and noise injection module is coupled to the carrier interface of the tested carrier equipment of the test cell.

Description

The power line carrier multilevel network test injected and be wirelessly connected based on distributed noise System
Technical field
The present invention relates to field of communication technology, based on distributed noise injects and be wirelessly connected especially with regard to a kind of Power line carrier multilevel network test macro.
Background technique
Low-voltage power line bandwidth carrier (LVPLC) communication be using low-voltage power distribution wire (380/220V user's line) as Information transmitting medium carries out a kind of specific communication mode of voice or data transmission.The technology is the high-frequency signal carrying information Electric current is loaded on, the power line transmission of various grades is then utilized, receives the modem of information again high-frequency signal from electricity It is separated in stream, and is transmitted to broadband over power line user terminal (computer, TV or telephone set and intelligent electric meter, switch, change Platform).The technology on the basis of not needing re-wiring, realizes that data, voice and video etc. are multiple services on existing electric wire Carrying.The working frequency of general high speed power line carrier wave supports multistage ad hoc network using OFDM modulation system in 0.7M~12M, Traffic rate is more than 1Mbps.
In actual carrier communication network, due to power line carrier environment influence and carrier communication equipment send power with The limit value of receiving sensitivity, two carrier communication nodes may not be able to realize direct-connected communication, need according to subchannel communication protocol into Network, is divided into different relaying ranks, safeguards entire carrier communication network by central coordinator by row classification ad hoc network, logical across grade Letter is realized by the forwarding that relay node carries out carrier communication message.Such as central node can directly with the first hierarchical network section The direct-connected communication of point, the second level network node is communicated with central node to need to carry out signal by the agent node in the first level Relaying, and so on, realize multistage network topology, each node in pilot network can mutual data transmission.In order to The communication of carrier wave multilevel network is tested, the reliability and networking stability of organization algorithm is verified, needs to simulate actual electric power wire loop Power line carrier multilevel network test macro is built in border, to verify communication and the ad hoc capability of tested carrier equipment.It is multistage The main task of networking test macro is to form the star-like of physics, line style, tree network topology according to testing requirement, makes to be tested Power line carrier equipment can be classified according to physical topology, and adjacent level carrier communication can be direct-connected, and nonadjacent level carrier wave is logical Letter is according to relayed communications between subchannel communication protocol progress grade.By being classified networking, forms power line similar with site environment and carry Wave communication network.
Ideally, carrier signal can only be conducted along carrier line, but carrier signal is as a kind of electromagnetic signal, Characteristic meets the description of maxwell equation group (Maxwell's equations), and the electric field of oscillation can generate the magnetic of oscillation , energy can be conducted by space, and the space radiation of carrier signal can be observed between the closer equipment of space length Conduction, even if two carrier equipments do not have physical connection, can also be in communication with each other.
Traditional power line carrier multilevel network test macro is mainly by shielded box and the test circuit board of inside, centralization The composition such as switch matrix, programmable attenuator, interconnection cable.Due to each test cell space length of multilevel network test macro Relative close, it is necessary to which the otherwise carrier signal conducted using shielded box shielding space will lead to network topology confusion, therefore shielded box It is that traditional power line carrier networking test macro must form.Meanwhile tested carrier equipment is located in each carrier mask case, A test cell is formed, centralized switch matrix connects each test cell using signal cable, passes through centralized switch square Battle array changes carrier network physical topology with programmable attenuator.The equipment such as each programmable attenuator and switch matrix by Ethernet or The wired connections such as 485 buses are controlled.Traditional power line carrier multilevel network test macro typical case composition as shown in Figure 1, PC machine passes through switch matrix and programmable attenuator by Ethernet control switch matrix, programmable attenuator and each test cell Change carrier network physical topology.Each test cell is respectively positioned in shielded box, coupling crosstalk between the level of masking.It should be noted that Fig. 1 is only schematic diagram, and is not drawn into whole shielded boxes.
However, there are following two disadvantages for traditional power line carrier multilevel network test macro: first is that point that can be constructed The topological pattern of grade is limited, second is that wired connection mode be easy to cause carrier signal crosstalk, to cause classification chaotic.Traditional electricity Line of force carrier wave multilevel network test macro composed structure causes the increased costs of test environmental structure and required space to increase, by Space and shielding box number limitation, measurement scope are typically limited to only within 300, and this method is suitable for professional testing agency's test System building is not suitable for testing environmental structure in the area the Duo Tai large scale experiment room of development phase.
The information disclosed in the background technology section is intended only to increase the understanding to general background of the invention, without answering When being considered as recognizing or imply that the information constitutes the prior art already known to those of ordinary skill in the art in any form.
Summary of the invention
The power line carrier that the purpose of the present invention is to provide a kind of to be injected and be wirelessly connected based on distributed noise is multistage Networking test macro, not needing traditional shielded box shielding space coupled signal can be realized carrier network classification.
To achieve the above object, the power line load that the present invention provides a kind of to be injected and be wirelessly connected based on distributed noise Wave multilevel network test macro, comprising: central control unit, multiple local side test cells, multiple table ends test cell and more A route flap damping device network, wherein central control unit and each of multiple local side test cells, multiple table ends test cell Test cell and multiple route flap damping device networks are communicated, to control the fortune of power line carrier multilevel network test macro Row;Local side test cell is tested carrier equipment for testing local side, and local side is tested carrier equipment conduct in carrier communication network The central node of network, to safeguard that carrier network communicates;Table end test cell is tested carrier equipment for testing table end, in carrier wave Table end is tested relay node or terminal node of the carrier equipment as network in communication network, to be responsible for relayed communications and number of terminals According to transmission;Route flap damping device network is routed as the carrier communication of local side test cell and table end test cell, each routing Attenuator network can connect multiple test cells, and allow hand over the communication dough softening closed between Carrier Node;And its In, each test cell in multiple local side test cells, multiple table ends test cell is built-in with noise injection module, noise note Enter the carrier interface that module is coupled to the tested carrier equipment of the test cell, for testing the antinoise energy of carrier communication Power.
In a preferred embodiment, noise injection module can issue white noise, narrow-band noise, impulsive noise or from The noise waveform that scene is recorded, noise injection module includes communication interface, control module, FPGA, FLASH memory, DAC digital-to-analogue Conversion module and PA power amplifier.
In a preferred embodiment, central control unit include PC machine, the wireless communication module being connected with PC machine, High-pass filter and communication antenna, wherein PC machine is used for the control software of operation power line carrier wave multilevel network test macro, in The correspondence with foreign country of control unit is entreated to carry out by Anneta module, the wireless communication module of central control unit is as wireless control The central node of network, to coordinate the group-net communication of all wireless communication modules in power line carrier multilevel network test macro.
In a preferred embodiment, each local side test cell includes main control module, wireless communication module, noise note Enter module, battery power supply module, interface module and filter, and local side test cell draws communication antenna interface and test Equipment carrier interface, wherein main control module is communicated with central control unit by wireless communication, single to control local side test Equipment under test communication interface and noise injection module inside member, communication antenna interface are used for connection communication antenna, communication antenna As the data transmit-receive channel of wireless control network, the carrier wave that test equipment carrier interface is used to for local side being tested carrier equipment is believed Number local side test cell is drawn, communication antenna interface is connected to high-pass filter, is connected to low pass filtered at test equipment carrier interface Wave device.
In a preferred embodiment, noise injection module is controlled by main control module, logical inside noise injection module Letter interface is connected to the main control module of local side test cell, to receive the control instruction that main control module issues, control instruction transmission Control module to noise injection module, control module parse control instruction, according to the setting of main control module, control noise FPGA inside injection module generates corresponding digital noise pumping signal, and DAC D/A converter module, which motivates digital noise, to be believed Number analogue noise signal is converted to, and analogue noise signal is sent to PA power amplifier, PA power amplifier makes an uproar simulation Acoustical signal is injected into the carrier interface that local side is tested carrier equipment after being amplified to specified power.
In a preferred embodiment, it is concentrator carrier communication module that local side, which is tested carrier equipment, and equipment under test is logical Letter interface is matched with the communication interface that local side is tested carrier equipment, the load of equipment under test carrier interface and the tested carrier equipment of local side Wave Interface Matching.
In a preferred embodiment, it is list/three-phase electric energy meter carrier communication module, table end that table end, which is tested carrier equipment, The test interface of test cell matches with tested table end communication module, and table end test cell has virtual electric energy meter function Can, to support to copy and accept multiple electric energy meter data item, and list event can be produced electricl energy and report signal.
In a preferred embodiment, each route flap damping device network includes main control module, wireless communication module, power Distribution module, multiple digital attenuation modules and external interface, external interface include communication antenna interface and multichannel carrier interface, Communication antenna interface is connected with high-pass filter, and carrier interface is connected with low-pass filter, and route flap damping device network is built-in with electricity Pond power supply module.
In a preferred embodiment, module connection is central by wireless communication for the main control module of route flap damping device network Control unit, and controlled by central control unit, to switch different pad value and connection type, and can be by power distribution Module cuts off the signal on a few roads or a few road carrier interfaces of connection, to control the conducting path and intensity of carrier signal.
In a preferred embodiment, the network topology different by route flap damping device network amendment, works as route flap damping When device network uses Star Network, whole channels of route flap damping device network are opened, and carrier channel decays to 0, all tests Unit is in the same network level;When route flap damping device network uses line style network, adjustment route flap damping device network So that each test cell is an independent network level, neighboring test cell carrier communication can go directly carrier channel, Non-adjacent test cell carrier communication needs to relay;When route flap damping device network uses tree network, route flap damping device is adjusted So that multiple test cells are a network level, the carrier communication of adjacent networks level can go directly the carrier channel of network, Non-adjacent network level carrier communication needs to relay.
Compared with prior art, the power line carrier according to the present invention injected and be wirelessly connected based on distributed noise is more Grade networking test macro, which has the advantages that, is provided with noise injection module inside (1) each test cell, can pass through injection The method of noise is tested the signal-to-noise ratio that carrier equipment receives carrier wave to reduce this unit, can prevent from carrying without shielded box The Space Coupling of wave signal realizes the classification of carrier network topology;(2) central control unit is controlled respectively using the mode of wireless communication A test cell and route flap damping device network have cut off the carrier signal conducting path that control route is formed, have prevented carrier signal By controlling across the grade conduction of route;(3) carrier signal between each test cell is connected to the network by route flap damping device, can be led to The physical topology that routing attenuator network changes carrier network is crossed, different network environments is simulated, it is flexible and changeable.
Detailed description of the invention
Fig. 1 is traditional power line carrier multilevel network test macro typical case's composition block diagram;
Fig. 2 is the structural block diagram of power line carrier multilevel network test macro according to an embodiment of the present invention;
Fig. 3 is the performance plot of the carrier signal of ideal situation;
Fig. 4 is the performance plot of the carrier signal in existing actual environment;
Fig. 5 is the performance plot of the carrier signal injected by noise according to an embodiment of the present invention;
Fig. 6 is the structural block diagram of noise injection module according to an embodiment of the present invention;
Fig. 7 is white Gaussian noise signal spectrum;
Fig. 8 is actual power line noise spectrum;
Fig. 9 is the structural block diagram of central control unit according to an embodiment of the present invention;
Figure 10 is the structural block diagram of local side test cell according to an embodiment of the present invention;
Figure 11 is the structural block diagram of table end test cell according to an embodiment of the present invention;
Figure 12 is the structural block diagram of route flap damping device network according to an embodiment of the present invention;
Figure 13 a is power line carrier multilevel network test macro according to an embodiment of the present invention using Star Network side The schematic diagram of formula connection;
Figure 13 b is power line carrier multilevel network test macro according to an embodiment of the present invention using line style network side The schematic diagram of formula connection;
Figure 13 c is power line carrier multilevel network test macro according to an embodiment of the present invention using tree network side The schematic diagram of formula connection.
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention will be described in detail, it is to be understood that guarantor of the invention Shield range is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members Part or other component parts.
As shown in Fig. 2, the electric power according to the preferred embodiment of the present invention for injecting and being wirelessly connected based on distributed noise Line carrier wave multilevel network test macro, comprising: central control unit 101, multiple local side test cells 102, the test of multiple table ends Unit 103 and multiple route flap damping device networks 104, wherein the carrier test access between each component passes through RF connection It is attached, carries out group-net communication for being tested carrier equipment, control access is by the way of wireless communication.
Each survey in above scheme, in central control unit and multiple local side test cells, multiple table ends test cell Examination unit and multiple route flap damping device networks are communicated, to control the operation of power line carrier multilevel network test macro, Change the attenuation relation between each test cell by control route flap damping device network is to change physical network topology The most important control unit of whole system.Local side test cell is tested carrier equipment for testing local side, in carrier communication network Middle local side is tested central node of the carrier equipment as network, to safeguard that carrier network communicates.Table end test cell is for testing Table end is tested carrier equipment, and table end is tested relay node or terminal section of the carrier equipment as network in carrier communication network Point, to be responsible for the transmission of relayed communications and terminal data.Route flap damping device network is single as local side test cell and the test of table end The carrier communication routing of member, each route flap damping device network can connect multiple test cells, and allow hand over and close on carrier wave section The communication dough softening between point, and can be realized the power distribution of multichannel carrier, it realizes carrier communication Route Selection, changes carrier wave Transmission network physical topology.
And wherein, multiple local side test cells, each test cell in the test cell of multiple table ends are built-in with noise Injection module, noise injection module is coupled to the carrier interface of the tested carrier equipment of the test cell, for testing carrier wave The noise resisting ability of communication offsets the crosstalk of space radiation in the way of noise injection, thus in the environment for being not necessarily to shielded box Lower realization spacing wave isolation.
The schematic diagram of entire carrier networking test macro is as shown in Fig. 2, local side test cell and table end test cell are distinguished For testing local side carrier equipment and table end carrier equipment, carrier communication road of the route flap damping device network as each test cell By each route flap damping device network can connect multiple test cells, and can adjust the carrier communication between these test cells Decaying and mutual physical couplings.It should be noted that Fig. 2 only depicts a part of test cell, it is only used as whole system Connection signal, actual system realize in the number of test cell and route flap damping device network can be increased according to testing requirement Amount is built enough test cells and is tested for network classification.
This programme is described below in detail, the method for realizing carrier network classification is injected by noise:
As shown in figure 3, under ideal environment, the situation of the space attenuation infinity of electromagnetic wave, the characteristic of carrier signal As shown, respectively representing the signal condition inside three test cells, abscissa is frequency, and ordinate is power.Assuming that every The background noise power spectral density of a test cell is -110dBm/Hz, and carrier wave sends power spectral density for -40dBm/Hz, between grade Attenuator pad value is 40dB, and the receiving sensitivity of multicarrier receiver is 3dB.Carrier test unit 1 issues carrier signal, is surveying The Signal-to-Noise that examination unit 2 receives is 30dB, is -10dB in the Signal-to-Noise that test cell 3 receives, signal is made an uproar Sound floods, and has been more than the ability of multicarrier receiver.I.e. test cell 2 can be communicated directly with test cell 1, and test cell 3 needs Relaying is carried out by test cell 2 to be communicated with test cell 1, to realize carrier network classification.
But in actual environment, the space attenuation of electromagnetic wave is not infinity.Assuming that the background noise of each test cell Power spectral density is -110dBm/Hz, and it is -40dBm/Hz that carrier wave, which sends power spectral density, and attenuator pad value is 40dB between grade, Spacing wave isolation is 60dB, and the minimum received signal to noise ratio of multicarrier receiver requires to be 3dB.
As shown in figure 4, carrier test unit 1 issues carrier signal, pass through Space Coupling to test cell 2 and test cell 3 signal power is -100dBm/Hz, and after the Signal averaging of signal attenuator, in the signal that test cell 2 receives Signal-to-noise ratio is 30dB, and test cell 3 is 10dB by the Signal-to-Noise that Space Coupling receives.The reception of test cell 3 is believed It makes an uproar than the receiving sensitivity for being greater than itself, i.e. test cell 3 can also be communicated directly with test cell 1, cannot achieve carrier network Network classification.Traditional method is to improve space isolation using shielded box, reduces Space Coupling signal to received influence, makes to connect The collection of letters number is similar to ideal situation, to realize classification.
As shown in figure 5, the present invention is injected by noise, to improve the background noise of each receiving unit.For example, upper In the case where stating hypothesis, the Background Noise Power spectrum density of each test cell is promoted to -90dBm/Hz.In test cell 1 In the case where sending -40dBm/Hz power spectral density signal, the Signal-to-Noise that test cell 2 receives is 10dB, and test is single The Signal-to-Noise that member 3 receives is -10dB.Test cell 3 directly cannot carry out direct carrier wave and lead to test cell 1 Letter, does not need the classification that physical shielding case is achieved that carrier network topology, i.e. test cell 3 needs to pass through test cell in this way 2 relaying could be communicated with test cell 1.
The various components structure composition of power line carrier multilevel network test macro of the invention is as follows:
As shown in fig. 6, noise injection module of the invention can issue white noise, to improve the carrier communication in this unit Background noise reduces carrier signal signal-to-noise ratio, is conducive to the classification of carrier network topology;Also capable of emitting a plurality of types of signals, example Such as narrow-band noise, impulsive noise, or the noise waveform recorded from scene, noise injection module include communication interface, control mould Block, FPGA (Field-Programmable Gate Array, field programmable gate array), FLASH memory, DAC digital-to-analogue Conversion module and PA power amplifier.Wherein, the non-volatile FLASH memory of the external power down of the FPGA of noise injection module is used The excited data source needed for storage generates noise signal can store the power line noise data actually recorded or using soft The white Gaussian noise signal data that part generates, different noise signals is exported according to different testing requirements.
For example, white Gaussian noise signal spectrum is as shown in fig. 7, its power spectral density obedience is uniformly distributed, amplitude distribution is taken From Gaussian Profile, all carrier communication frequency ranges are covered.Actual power line noise spectrum as shown in figure 8, uneven with interior frequency spectrum, with The power load of live power line installation is related, and has time-varying characteristics, can follow without apparent rule, need collection in worksite It records.
As shown in figure 9, central control unit 101 includes PC machine, the wireless communication module being connected with PC machine, high-pass filtering Device and communication antenna, wherein PC machine is used for the control software of operation power line carrier wave multilevel network test macro, and center control is single The correspondence with foreign country of member is carried out by Anneta module, center of the wireless communication module of central control unit as wireless control network Node, to coordinate the group-net communication of all wireless communication modules in power line carrier multilevel network test macro.
As shown in Figure 10, each local side test cell 102 include main control module, wireless communication module, noise injection module, Battery power supply module, interface module and filter, and local side test cell draws communication antenna interface and test equipment carries Wave interface, wherein main control module is communicated with central control unit by wireless communication, to control inside local side test cell Equipment under test communication interface and noise injection module, communication antenna interface be used for connection communication antenna, communication antenna is as nothing The data transmit-receive channel of line traffic control network, the carrier signal that test equipment carrier interface is used to for local side being tested carrier equipment are drawn Local side test cell, communication antenna interface are connected to high-pass filter, prevent carrier signal from antennal interface to external radiation, test It is connected to low-pass filter at equipment carrier interface, prevents wireless signal from impacting to carrier communication.Typical local side is tested to be carried Wave device is concentrator carrier communication module, and main control module is communicated with central control unit by wireless communication, control office Hold the communication interface and noise injection module inside test cell.Equipment under test communication interface and local side are tested the logical of carrier equipment Believe Interface Matching, equipment under test carrier interface is matched with the carrier interface that local side is tested carrier equipment.Main control module can pass through by The working condition of measurement equipment communication interface control equipment under test.
Wherein, noise injection module is controlled by the main control module of this test cell, and the communication inside noise injection module connects Mouth is connected to the main control module of local side test cell, and to receive the control instruction that main control module issues, control instruction, which is transmitted to, makes an uproar Control module inside sound injection module, control module parse control instruction, according to the setting of main control module, control noise injection The FPGA of inside modules generates corresponding digital noise pumping signal, and DAC D/A converter module turns digital noise pumping signal It is changed to analogue noise signal, and analogue noise signal is sent to PA power amplifier, PA power amplifier believes analogue noise The carrier interface that local side is tested carrier equipment is injected into after number being amplified to specified power.
Figure 11 is the structural block diagram of table end test cell, and table end test cell 103 to be tested is table end carrier equipment allusion quotation It is that list/three-phase electric energy meter carrier communication module, inside composition and function and local side test are single that the table end of type, which is tested carrier equipment, Member is similar, connect by wireless communication with central control unit.It is that equipment under test communicates with the difference of local side test cell Interface and equipment under test carrier interface, test interface and the tested table end communication module of table end test cell match, and table End test cell has the function of virtual electric energy meter, to support to copy and accept multiple electric energy meter data item, and can produce electricl energy list event Report signal.
As shown in figure 12, each route flap damping device network 104 includes main control module, wireless communication module, power distribution mould Block, multiple digital attenuation modules and external interface, external interface include communication antenna interface and multichannel carrier interface, communicate day Line interface is connected with high-pass filter, and carrier interface is connected with low-pass filter, can prevent the phase of wireless signal with carrier communication Mutually interference, route flap damping device network are built-in with battery power supply module, can be detached from power grid autonomous working, prevent carrier signal from passing through electricity The mutual crosstalk of source line.
Module connects central control unit to the main control module of route flap damping device network by wireless communication, and is controlled by center Unit is controlled, and to switch different pad value and connection type, main control module can be by adjusting route flap damping device network Internal different digital attenuation module, changes the pad value between each carrier interface of route flap damping device network, and can be by power Distribution module cuts off that certain is several or connect the signal of certain several carrier interface, controls the conducting path and intensity of carrier signal, real Existing different physical carrier network topology.
As shown in Figure 13 a-13c, here is by the example of route flap damping device network amendment heterogeneous networks topology (institute in figure It is shown with local side test cell 102, table end test cell 103, route flap damping device network 104):
Whole channels of Star Network, route flap damping device network are opened, and carrier channel decays to 0, all test cells It is in the same network level.
Line style network adjusts the carrier channel of route flap damping device network so that each test cell is an independent net Network layers grade, neighboring test cell carrier communication can go directly, and non-adjacent test cell carrier communication needs to relay.
Tree network adjusts the carrier channel of route flap damping device network so that multiple test cells are a network layer Grade, the carrier communication of adjacent networks level can go directly, and non-adjacent network level carrier communication needs to relay.
It should be noted that above-mentioned star-like, line style, tree network are typical test network topology.In actual network Carrier wave topology is ever-changing, and the power line carrier that can be proposed by the different configurations of route flap damping device network in this motion is multistage It is simulated in networking test macro.
Each test cell and route flap damping device network of the invention has been provided with independent battery power supply module, can make Whole system is detached from network operation, can cut off the carrier signal conducting path of power supply line's formation, prevent carrier signal from passing through Across the grade conduction of power supply line.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more, The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates, Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one The step of function of being specified in a box or multiple boxes.
The aforementioned description to specific exemplary embodiment of the invention is in order to illustrate and illustration purpose.These descriptions It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can much be changed And variation.The purpose of selecting and describing the exemplary embodiment is that explaining specific principle of the invention and its actually answering With so that those skilled in the art can be realized and utilize a variety of different exemplary implementation schemes of the invention and Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.

Claims (10)

1. a kind of power line carrier multilevel network test macro injected and be wirelessly connected based on distributed noise, feature exist In the power line carrier multilevel network test macro includes: central control unit, multiple local side test cells, multiple table ends Test cell and multiple route flap damping device networks;
Wherein, each test in the central control unit and the multiple local side test cell, multiple table ends test cell Unit and multiple route flap damping device networks carry out wireless communication, to control the power line carrier multilevel network test macro Operation;
The local side test cell is tested carrier equipment for testing local side, and the local side described in carrier communication network is tested carrier wave Central node of the equipment as network, to safeguard that carrier network communicates;
Table end test cell is tested carrier equipment for testing table end, and the table end described in the carrier communication network is tested Relay node or terminal node of the carrier equipment as network, to be responsible for the transmission of relayed communications and terminal data;
The route flap damping device network is routed as the carrier communication of the local side test cell and table end test cell, often A route flap damping device network can connect multiple test cells, and allow hand over the communication decaying closed between Carrier Node Degree;
And wherein, the multiple local side test cell, each test cell in the test cell of multiple table ends are built-in with noise Injection module, the noise injection module is coupled to the carrier interface of the tested carrier equipment of the test cell, for testing The noise resisting ability of carrier communication.
2. power line carrier multilevel network test macro as described in claim 1, which is characterized in that the noise injection module White noise, narrow-band noise, impulsive noise or the noise waveform recorded from scene can be issued, the noise injection module includes logical Believe interface, control module, FPGA, FLASH memory, DAC D/A converter module and PA power amplifier.
3. power line carrier multilevel network test macro as claimed in claim 2, which is characterized in that the central control unit Including PC machine, the wireless communication module being connected with the PC machine, high-pass filter and communication antenna, wherein the PC machine is used In the control software for running the power line carrier multilevel network test macro, the correspondence with foreign country of the central control unit passes through The Anneta module carries out, central node of the wireless communication module of the central control unit as wireless control network, with Coordinate the group-net communication of all wireless communication modules in the power line carrier multilevel network test macro.
4. power line carrier multilevel network test macro as claimed in claim 3, which is characterized in that each local side test Unit includes main control module, wireless communication module, noise injection module, battery power supply module, interface module and filter, and And the local side test cell draws communication antenna interface and test equipment carrier interface, wherein the main control module passes through nothing Line communication is communicated with the central control unit, to control the equipment under test communication interface inside the local side test cell And noise injection module, the communication antenna interface are used for connection communication antenna, the communication antenna is as wireless control network Data transmit-receive channel, the test equipment carrier interface be used for by the local side be tested carrier equipment carrier signal draw institute Local side test cell is stated, the communication antenna interface is connected to high-pass filter, is connected at the test equipment carrier interface low Bandpass filter.
5. power line carrier multilevel network test macro as claimed in claim 4, which is characterized in that the noise injection module It is controlled by the main control module, the communication interface inside the noise injection module is connected to the master control of the local side test cell Module, to receive the control instruction that the main control module issues, the control instruction is transmitted to inside the noise injection module Control module, the control module parses the control instruction, according to the setting of the main control module, controls the noise note The FPGA for entering inside modules generates corresponding digital noise pumping signal, and the DAC D/A converter module is by the digital noise Pumping signal is converted to analogue noise signal, and the analogue noise signal is sent to the PA power amplifier, the PA The analogue noise signal is amplified to and is injected into the carrier wave that the local side is tested carrier equipment after specified power by power amplifier Interface.
6. power line carrier multilevel network test macro as claimed in claim 5, which is characterized in that the local side is tested carrier wave Equipment is concentrator carrier communication module, and the equipment under test communication interface and local side are tested the communication interface of carrier equipment Match, equipment under test carrier interface is matched with the carrier interface that the local side is tested carrier equipment.
7. power line carrier multilevel network test macro as claimed in claim 6, which is characterized in that the table end is tested carrier wave Equipment is list/three-phase electric energy meter carrier communication module, the test interface and tested table end communication module of table end test cell Match, and table end test cell has the function of virtual electric energy meter, to support to copy and accept multiple electric energy meter data item, and energy It enough produces electricl energy list event and reports signal.
8. power line carrier multilevel network test macro as described in claim 1, which is characterized in that each route flap damping Device network includes main control module, wireless communication module, power distribution module, multiple digital attenuation modules and external interface, institute Stating external interface includes communication antenna interface and multichannel carrier interface, and the communication antenna interface is connected with high-pass filter, institute It states carrier interface and is connected with low-pass filter, the route flap damping device network is built-in with battery power supply module.
9. power line carrier multilevel network test macro as claimed in claim 8, which is characterized in that the route flap damping device net The main control module of network connects the central control unit by the wireless communication module, and by the central control unit It is controlled, to switch different pad value and connection type, and a few roads or connection can be cut off by the power distribution module The signal of a few road carrier interfaces, to control the conducting path and intensity of carrier signal.
10. power line carrier multilevel network test macro as claimed in claim 9, which is characterized in that declined by the routing Subtract the different network topology of device network amendment, when the route flap damping device network uses Star Network, the route flap damping device Whole channels of network are opened, and carrier channel decays to 0, and all test cells are in the same network level;When described When route flap damping device network uses line style network, the carrier channel of the route flap damping device network is adjusted so that each test is single Member is an independent network level, and neighboring test cell carrier communication can go directly, and non-adjacent test cell carrier communication needs It relays;When the route flap damping device network use tree network when, adjust the carrier channel of the route flap damping device network with So that multiple test cells are a network level, the carrier communication of adjacent networks level can go directly, and non-adjacent network level carries Wave communication needs to relay.
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