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 PDFInfo
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- 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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/544—Setting up communications; Call and signalling arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/04—Network management architectures or arrangements
- H04L41/044—Network management architectures or arrangements comprising hierarchical management structures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/12—Discovery or management of network topologies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/06—Testing, supervising or monitoring using simulated traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/22—Communication 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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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
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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