CN105591826B - A kind of low-voltage power line bandwidth carrier communication network failure diagnostic device and method - Google Patents
A kind of low-voltage power line bandwidth carrier communication network failure diagnostic device and method Download PDFInfo
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- H—ELECTRICITY
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Abstract
The present invention relates to a kind of low-voltage power line bandwidth carrier communication network failure diagnostic devices used on site, also relate to corresponding method, belong to carrier communication field.The device includes carrier transmitting-receiving circuit, telecommunication circuit, storage circuit, human-computer interaction circuit, microprocessor；Microprocessor contains acquisition unit, judging unit, data frame unit, monitoring unit, resolution unit, topology unit, positioning unit, calls together and survey module, detection module, spectrum block, discrimination module, tentative module, output module.The present invention passes through the acquisition and spectrum analysis to noise signal on power line, it not only can intuitively show various noises --- ambient noise, periodic noise, the sudden noise for influencing carrier communication, and there are various fault messages of the field width with carrier communication network in quick diagnosis, and intuitively reflect, to take respective handling measure in time, it is very suitable for the operational management based on power line carrier communication network network.
Description
Technical field
The present invention relates to a kind of carrier communication network trouble-shooter, especially a kind of low-voltage power line on site
Bandwidth carrier communication network failure diagnostic device, also relates to corresponding method, belongs to carrier communication field.
Background technique
Application of the low-voltage power line bandwidth carrier communication technology in power user power consumption information acquisition system just pushes away rapidly
Extensively.But traditional low-voltage power line bandwidth carrier communication network field failure diagnostic method needs engineers and technicians to carry signal
The instrument and equipments such as sampler, frequency spectrograph, isolated power supply measure analysis to scene.These instrument and equipments are expensive, carry
It is inconvenient.And the sampled data of many instruments, needs the personnel of profession that could analyze, the analysis means of lack of wisdom.Therefore,
So far, practical engineering application field engineering technical staff is directed to the fault diagnosis of live bandwidth carrier communication network, lacks
Practical, facilitation analyzing and diagnosing tool.
Retrieval discovery, discloses a kind of communication network failure application No. is 201210183026.5 Chinese patent application and examines
Disconnected method and apparatus.This method includes that base station collects and records electromagnetic interference signal；The base station obtains institute in fault time section
The electromagnetic interference signal of record, and judge whether communication failure reason is nature electromagnetism according to the electromagnetic interference signal got
Interference.It is introduced that electromagnetic interference signal event when communication failure occurs for this method records, analyzes and diagnose and be out of order
Whether reason is nature electromagnetic interference, optimizes the diagnostic process of communication failure between base station and mobile terminal, reduces original
There are the time for solving the problems, such as process and resources costs, and nature electromagnetic interference can be diagnosed, improves fault diagnosis
Timeliness and accuracy.However the diagnostic result of above-mentioned patent is only capable of providing whether communication network is nature or other signals
Source interference and base station system failure and other reasons, not to fault message carry out profound analysis (such as: the collected electricity in base station
Magnetic disturbance signal does not carry out time-frequency conversion, can not graphic software platform noise and signal frequency domain waveform).Secondly, the patent for
The topology information of communication network and routing iinformation etc. are not acquired, due to lacking between each node to entire communication network
Protocol layer message acquisition and parsing, so can not positioning and communicating network protocol interaction failure, therefore, above-mentioned existing method is simultaneously
Be not suitable for the fault diagnosis based on power line carrier communication network network.
Summary of the invention
It is an object of the invention to: it is directed to above-mentioned disadvantage of the existing technology, proposes that one kind can be with quick diagnosis and complete
The low-voltage power line bandwidth carrier communication network failure of the fault messages such as the intuitive faults node locating in face, reason, position is examined
Disconnected device and method.
In order to reach the goals above, low-voltage power line bandwidth carrier communication network failure diagnostic device of the invention includes:
Carrier transmitting-receiving circuit --- to realize microprocessor and power line carrier communication network by PLC signal coupling circuit
Network is of coupled connections, and sends the power amplification of signal and receive the filtering and shaping amplification of signal；
The power line carrier communication network network is using low-voltage power line as telecommunication media, by being in same supply transformer electric power
Bandwidth carrier concentrator, bandwidth carrier collector and power meter group on line is to realize low-voltage electricity user telecommunications
Breath convergence, transmission, interactive network communication；
Each collector is respectively as routing node or from node；
The concentrator is as host node, to complete networking control and network operation management；
Telecommunication circuit --- to realize microprocessor and the communication connection and microprocessor that manage computer and broadband
The communication connection of carrier wave concentrator, bandwidth carrier collector and electric energy meter；
Storage circuit --- to realize node parameter and micro process including each node mounting locations archive information
Device receives and the storage of processing data；
Human-computer interaction circuit --- to realize the interaction of operator and microprocessor；
Microprocessor --- as core devices, the microprocessor contains
Acquisition unit, to acquire power line noise；
Judging unit extracts useful signal to judge whether, then enables data frame unit in this way, such as otherwise opens and adopts again
Collect unit；
Data frame unit, useful signal is generated data frame by predetermined format and decodes generation message；
Monitoring unit, to monitor and open message；
Resolution unit, to according to specification (such as according to VLAN tag and service cell type) classification analytic message, and
Message (messages such as heartbeat detection, offline instruction, communication successful rate statistics) after being parsed by classification storage；
Topology unit forms corresponding network topology to find list message；
Positioning unit, to positioning failure node, the positioning unit contains:
It calls survey module together, surveys each node historical information kept in host node record to call together, obtain historical path library；
Detection module respectively enlivens number from node to trigger host node cycle detection, obtains including offline from section
Data including point information and uplink and downlink communication success rate, and the path by determining malfunctioning node from nodal information offline；
Spectrum block forms each node physical logic connection and closes to the node mounting locations archive information according to storage
System, and each node signal quality information is obtained using spectrum analysis；
Discrimination module, to judge malfunctioning node with the presence or absence of noise jamming and the class of noise according to result of spectrum analysis
Type obtains the reason of malfunctioning node enters off-line state；
Tentative module penetrates meter reading and immediate meter reading life successively to send electric energy meter to malfunctioning node by telecommunication circuit
It enables, and according to return situation judging trouble location；
Output module, to show malfunctioning node positioning and failure cause, location information output.
The corresponding low-voltage power line bandwidth carrier communication network failure diagnostic method of the present invention is based on: carrier transmitting-receiving electricity
Road --- realizing being of coupled connections for microprocessor and power line carrier communication network network by PLC signal coupling circuit, and
It sends the power amplification of signal and receives the filtering and shaping amplification of signal；
The power line carrier communication network network is using low-voltage power line as telecommunication media, by being in same supply transformer electric power
Bandwidth carrier concentrator, bandwidth carrier collector and power meter group on line is to realize low-voltage electricity user telecommunications
Breath convergence, transmission, interactive network communication；
Each collector is respectively as routing node or from node；
The concentrator is as host node, to complete networking control and network operation management；
Telecommunication circuit --- to realize microprocessor and the communication connection and microprocessor that manage computer and broadband
The communication connection of carrier wave concentrator, bandwidth carrier collector and electric energy meter；
Storage circuit --- to realize node parameter and micro process including each node mounting locations archive information
Device receives and the storage of processing data；
Human-computer interaction circuit --- to realize the interaction of operator and microprocessor；
Microprocessor --- as core devices, the microprocessor operating procedure is
Acquisition step acquires power line noise；
Judgment step judges whether to extract useful signal, then enables data frame step in this way, such as otherwise returns to acquisition step
Suddenly；
Useful signal is generated data frame by predetermined format and decodes generation message by data frame step；
Monitoring step monitors and opens message；
Analyzing step, according to specification classification analytic message, and by the message after classification storage parsing；
Topology step finds list message, forms corresponding network topology；
Positioning step, positioning failure node, the positioning step contain:
It calls survey substep together, calls each node historical information record surveyed and kept in host node together, obtain historical path library；
Detection substep, triggering host node cycle detection respectively enliven number from node, obtain including believing from node offline
Data including breath and uplink and downlink communication success rate, and the path by determining malfunctioning node from nodal information offline；
Frequency spectrum substep, according to the node mounting locations archive information of storage, forms each node physical logic connection relationship, and
Each node signal quality information is obtained using spectrum analysis；
Differentiate substep, judge that malfunctioning node whether there is the type of noise jamming and noise according to result of spectrum analysis,
Obtain the reason of malfunctioning node enters off-line state；
Test substep, successively sends electric energy meter to malfunctioning node by telecommunication circuit and penetrates meter reading and immediate meter reading order,
And according to return situation judging trouble location；
Output substep, by malfunctioning node positioning and failure cause, location information output display.
Compared with prior art, the present invention is by the acquisition and spectrum analysis to noise signal on power line, not only can be with
Intuitively show various noises --- ambient noise, periodic noise, the sudden noise for influencing carrier communication, and can be right
Each layer message of bandwidth carrier communication network carries out specification automatic identification and parsing, by network host node, routing node and from section
Monitoring messages and record and combination heartbeat message, node signal quality, uplink and downlink communication success rate etc. between point test and analyze,
Can quick diagnosis there are various fault messages of the field width with carrier communication network, and intuitively reflect, it is corresponding to take in time
Treatment measures are very suitable for the operational management based on power line carrier communication network network.
It is summed up, the present invention has the following obvious advantages:
1) integrated level height of the present invention, compact, software intelligent analysis, compared to traditional power wire broadband carrier communication
Network engineering operation and maintenance tools and method are more easily carried, are easy to operate, is intelligent；Human cost can be greatly reduced, is improved
Power engineering personnel labor productivity and working efficiency.
2) signal extraction in 100KHz~100MHz frequency range on power line is gone out by PLC signal coupling circuit
Come, carry out spectrum analysis, can be visually observed that very much the ambient noise for influencing bandwidth carrier communication, periodic noise, burst
Property noise, fault diagnosis is carried out using low-voltage power line bandwidth carrier traffic model, to effectively improve live electric power
Maintainability of the line width with carrier communication network.
3) specification automatic identification and parsing can be carried out to each layer message of bandwidth carrier communication network, and is quickly formed and is shown
Show the topological relation figure of bandwidth carrier host node, routing node, carrier wave from node, traditional power information acquisition system engineering fortune
Dimension tool cannot achieve.
4) operating condition of live low-voltage power line bandwidth carrier communication network can be grasped in time, and it is different quickly to analyze network
Often, positioning failure node prevents the power supply safety hidden danger of acquisition system, improves the O&M service quality of electric power enterprise.
Detailed description of the invention
The present invention will be further described below with reference to the drawings.
Fig. 1 is the hardware structure diagram of one embodiment of the invention.
Fig. 2 is that Fig. 1 embodiment is applied to low-voltage power line bandwidth carrier communication network block diagram.
Fig. 3 is the network topological diagram of Fig. 2.
Fig. 4 is the quick diagnosis operational flow diagram of Fig. 1 embodiment.
Fig. 5 is the data frame structure schematic diagram in Fig. 1 embodiment.
Fig. 6 is the network protocol stack hierarchical structure schematic diagram of Fig. 1 embodiment.
Fig. 7 is that the physical layer data of Fig. 1 embodiment receives decoding process schematic diagram.
Fig. 8 is the physical-layer data frame coding transmission process schematic diagram of Fig. 1 embodiment.
Specific embodiment
Embodiment one
The low-voltage power line bandwidth carrier communication network failure diagnostic device of the present embodiment is constituted substantially as shown in Figure 1, micro-
Processor passes through the coupling of PLC signal coupling circuit carrier transmitting-receiving circuit and power line carrier communication network network as core devices
Connection, PLC signal coupling circuit carrier transmitting-receiving circuit have the power amplification for sending signal and receive the filtering and shaping of signal
Enlarging function.
Power line carrier communication network network is as shown in Fig. 2, using low-voltage power line as telecommunication media, by being in same power supply transformation
Bandwidth carrier concentrator, bandwidth carrier collector and power meter group on device power line is to realize low-voltage electricity user
Power information convergence, transmission, interactive network communication.As shown in figure 3, each collector is respectively as routing node or from node；
Concentrator is as host node, to complete networking control and network operation management.
The communication interface of microprocessor is realized by the telecommunication circuit containing RS232, RS485, USB, WIFI and exterior tube
Manage the communication connection of computer and the communication connection with bandwidth carrier concentrator, bandwidth carrier collector and electric energy meter.
The memory interface of microprocessor connects the storage circuit containing DDR, FLASH, TF card, may be implemented to include each node peace
Node parameter and microprocessor including holding position archive information receive and the storage of processing data.
The man-machine interactive interface of microprocessor and the human-computer interaction electricity including LCD touch screen, keyboard, audio output etc.
Road connection, realizes the interaction of operator and microprocessor in which can be convenient.
Microprocessor operational process referring to fig. 4, basic step are as follows:
The power line that acquisition step --- acquisition power line noise, specially reception PLC signal coupling circuit extract
The signal converted in upper scheduled frequency range, through A/D.
Judgment step --- judge whether to extract useful signal, then enable data frame step in this way, such as otherwise returns and adopt
Collect step.
Data frame step --- by the useful signal detected from power line, predetermined format generates data frame simultaneously as shown in Figure 5
Decoding generates message；The carrier wave analog signal on power line is specially reduced to data, physical layer progress data frame is sent to and connects
Receipts processing leads to the signal received generation by the bandwidth carrier that preamble field, frame control field and payload data field form
Believe predetermined structure data frame, the preamble field is a periodic sequence, and the frame control field is to be used to after preamble field
Some important control information are transmitted, such as: load data length, transmission rate, service information, the payload data field are
It is actually subjected to the load data of transmission, in order to keep data transmission more reliable, initial data is packaged in batches transmission.Data frame decoding ginseng
See Fig. 7, optimal FFT window is selected by clock and frame synchronization, so that subcarrier is kept orthogonal, find out frame in OFDM symbol stream
Starting position carries out diversity merging to frame control field, by the identical letter of the carrying received after Fourier transformation FFT
Multiple independent subcarrier in frequency domain of breath concentrate folding to improve and receive signal, to reduce the shadow of channel fading using signal
Loud and channel deinterleaves.It is first deinterleaved in receiving end, continuous mistake will be broken up, therefore be conducive to channel decoding module
Error correction is carried out, reliability is improved.Payload data field is deinterleaved and is gone to disturb, carries out Tubo decoding respectively, forms reduction
For the bandwidth carrier communication-network-message of initial data, data link layer (referring to Fig. 6) is transported to by physical layer.
Monitoring step --- it monitors and opens message.
Analyzing step --- according to specification classification analytic message, and by the message after classification storage parsing；Specially data
Link layer will be reduced to the bandwidth carrier communication-network-message of initial data.In bandwidth carrier communication network, each networking
All there is neighbor node in node (including host node, routing node, from node), the neighbor node of some node is and the section
Point is able to carry out the node of carrier communication.During networking, each node can find beacon based on the received, perceive oneself
Neighbor node, and record, form a discovery list.After the completion of networking, during network is from maintenance, Mei Gejie
Point finds list message by interception node, so that it may shape by the periodic broadcast distribution of discovery list message of this node
At bandwidth carrier host node, routing node, carrier wave from the dynamic network topology relationship of node.Data link layer is divided into network management
Sublayer and medium access control sublayer, network management sublayer mainly realize the networking of bandwidth carrier communication network, network operation, road
By management and the convergence and distribution of application layer message.When receiving message, the message that medium access control sublayer is received, forwarding
To application layer；When sending message, network management sublayer mainly completes the classification of message, then matchmaker is transferred in the determination of routing policy
Body access control sublayer is sent.Generally speaking, data link layer provides two services for application layer: data transmit sum number
According to management.Wherein data transport service is mainly used to complete carrier wave host node and the transmission from the application layer data between node,
Data management service is mainly used to that the data information of host node local is inquired or be arranged for application layer.Network management sublayer can
According to the VLAN tag of message and service data unit type, classify to message, distribute corresponding ID, and is arranged corresponding
Message validity period.
Topology step --- discovery list message forms corresponding network topology.
Positioning step --- positioning failure node, positioning step can be subdivided into following substep: calling survey substep together, call together and survey main section
Temporary each node historical information record, obtains historical path library in point；Detection substep, triggering host node cycle detection respectively from
Node enlivens number, obtains the data including offline from nodal information and uplink and downlink communication success rate, and by offline
The path of malfunctioning node is determined from nodal information；Frequency spectrum substep is formed each according to the node mounting locations archive information of storage
Node physical logic connection relationship, and each node signal quality information is obtained using spectrum analysis；Substep is differentiated, according to frequency spectrum point
Analysis result judges that malfunctioning node with the presence or absence of noise jamming and the type of noise, show that malfunctioning node enters the original of off-line state
Cause；Test substep is successively sent to malfunctioning node electric energy meter by telecommunication circuit and penetrates meter reading and immediate meter reading order, and according to
Return to situation judging trouble location；Output substep, by malfunctioning node positioning and failure cause, location information output display.
The diagnosis positioning of above-mentioned failure really receives the parsing of data by power line, by the network pipe of data link layer
Sublayer is managed according to VLAN tag and service data unit type, heartbeat detection message is formed, indicates message, communication success rate offline
Report the networks such as message from information is safeguarded, in bandwidth carrier communication network, each node periodically sends discovery list
Message judges that whether active node is online for routing node.Routing node is living by the node in the discovery list of local maintenance
The information that jumps is sent to host node by the heartbeat detection message of fixed cycle, and host node summarizes the node online information of the whole network.When
In bandwidth carrier communication network, when some node communication abnormality, the application diagnostic device can be passed through and trigger host node cycle
Detection enlivens number from node, if host node finds the enlivening from node in a complete heartbeat cycle time
Number is 0, then may determine that this from node off-line.If host node is received from the slave node for being judged to not networking
Message, actively instruction should can create offline instruction message, and will be filled into message from the information of node offline from node off-line
In, broadcast transmission is carried out, notifies that all websites in network should be from node off-line.It each can be by parsing from node from node
Discovery list message, know the uplink and downlink communication success rate for itself, form communication success rate and report message, pass through this Shen
Please device open host node communication success rate reporting functions, and combine network topological information, can Primary Location communicate successfully
The low associated nodes of rate.Reference mode physical logic connection relationship avoids abnormal nodes, i.e., by node specified circuit by communicating
The range of nodes for influencing communication failure can be gradually reduced, recycles spectrum analysis to obtain node signal quality, can finally be formed
Diagnostic result.
When there is data frame to need to send (referring to Fig. 8), physical layer receives the media access control from data link layer
The input of sublayer handles frame control, load data using two sseparated links respectively.Frame control field and load in data
After data field difference Turbo convolutional encoding, channel interleaving, diversity copy and Turbo convolutional encoding, scrambling code, intertexture, together
Payload data field is deinterleaved into constellation point (the present embodiment uses the OFDM physical-layer techniques based on FFT,
OFDM modulation technique is transmitted by the way that channel is divided into several parallel orthogonal subchannels, improve signal anti-fading ability,
The availability of frequency spectrum is improved, mating protection interval can eliminate intersymbol interference), it is transformed to time-domain signal using IFFT, and add and follow
Ring prefix and leading and progress windowing process.In order to make the attenuation outside a channel of ofdm signal faster, using to single OFDM symbol
The method of adding window.The amplitude of signal can be made in smoother excessive to 0 of character boundary by window function, generate ofdm signal
(Orthogonal Frequency Division Multiplexing orthogonal frequency division multiplexing).
Ofdm signal is sent on power line by signal coupling circuit AFE(analog front end), concentrator host node active meter reading,
The application layers message such as business is to be compiled by data link layer by the 6th step data frame when routing active meter reading, concurrent meter reading, school
Ofdm signal is formed after code to be coupled on power line, by sending application layer order, code can be returned according to collector (from node),
Judge whether normal from nodal clock, the port RS485.Application layer message can be broadcast address or specify from node when sending
Location；It is received if it is broadcast address is then all from node, if it is specified from node address, then only address is identical from section
Point can just receive.
The device of the present embodiment can show the time-domain and frequency-domain signal of power line noise by LCD, by right
The acquisition and spectrum analysis of noise signal on power line can be intuitive to see the ambient noise for influencing carrier communication, period very much
Property noise, sudden noise can show the biggish extraordinary noise of amplitude in different colors on LCD, and operator is facilitated to look into
It sees.In addition, device internal digital bandpass filter through this embodiment, can extract the electricity in 2MHz~12MHz frequency range
Power line bandwidth carrier signal can be used for the measurement of concentrator, collector power wire broadband carrier signal transmission power spectrum density.
And the scheme of the present embodiment can carry out the reconciliation of specification automatic identification to each layer message of bandwidth carrier communication network
Analysis, business, collector Active Registration, journalism in event when to concentrator active meter reading, routing active meter reading, concurrent meter reading, school
The application layers messages such as business are classified display on LCD.Pass through the detailed record of the message interaction process between concentrator and collector
And intellectual analysis, it can easily carry out the diagnosis of live bandwidth carrier communication network failure.Method of the invention is by adopting
With technologies such as advanced high-speed sampling, spectrum analysis, network protocol analysis, human-computer interactions, live power line can be quickly analyzed
Interchannel noise frequency spectrum, broadband carrier signal frequency spectrum, bandwidth carrier communication network topology, and being capable of intelligent diagnostics scene bandwidth carrier
The fault message of node.
The diagnostic device of the present embodiment in engineering site in use, first by insulate coupling clip be connected to concentrator,
On the power line of collector and the same supply transformer of electric energy meter, power line carrier communication is accessed by PLC signal coupling circuit
Network.Microprocessor is deposited the power line message classification recognized parsing by opening the monitoring of carrier link message in the present apparatus
Storage, and by reading the currently managed routing node of host node and from nodal information, form network topological diagram.Assuming that by Fig. 3
Following 2 failures occur for the power wire broadband carrier communication network of composition: 1) node D cannot be communicated；2) node C and electric energy meter it
Between RS485 communication line open circuit, carrying out fault location using the diagnostic device of the present embodiment will have following process to complete:
(1) it calls the historical information record for surveying each node kept in host node together by the application diagnostic device, is gone through
History path library.
(2) detection of the application diagnostic device triggering host node cycle enlivens number from node, obtains offline from section
Point information and uplink and downlink communication success rate etc., by the way that from nodal information, it is offline to determine node D offline.
(3) according to historical path library, knowing node D once is the routing node of node F, G.
(4) according to the node mounting locations archive information stored in device, device is interior to form each node physical logic connection
Relationship, it is assumed that the distance between node B, C and node D are more than the point-to-point maximum communication distance of carrier wave, and between node D, E
Mounting distance is closer, then device selection specified circuit is communicated by A- > E- > F- > D and A- > E- > G- > D, and whether detection abnormal nodes D can
Enough communicated by other paths with host node.If still cannot be communicated with node D according to specified circuit by host node A, distinguish
The carrier signal for monitoring host node A and node D, E, F, G obtains node signal quality using spectrum analysis.
(5) it may determine that node D whether there is noise jamming and noise type by spectrum analysis, it is final to obtain egress
D enters the reason of off-line state.
(6) electric energy meter is sent to node C by the RS232 interface of the application diagnostic device and penetrates meter reading order, because before
Assuming that failure (the RS485 line open circuit between node C and electric energy meter), so node C, which can be returned, penetrates meter reading failure；Pass through again
RS485 interface directly sends meter reading order to electric energy meter, if electric energy meter returns to meter reading success, illustrate node C and electric energy meter it
Between RS485 communication line it is abnormal；If electric energy meter returns to meter reading failure, illustrating electric energy meter, there are failures.It can by this step
It is whether working properly with the port for verifying collection in worksite and measuring equipment.
Above-mentioned (1)~(6) diagnosis process judges automatically execution in portion in the device, by above-mentioned automatic diagnostic process, finally
Positioning failure node, while failure cause is exported on LCD.
It was verified that being designed after using the present embodiment by building low-voltage power line bandwidth carrier communication network model
Trouble-shooter, to effectively improve the maintainability of live low-voltage power line bandwidth carrier communication network, Ke Yijin
One step guarantees the advance to perfect order of smart grid construction, realizes that power user power consumption information acquisition system builds " all standing, Quan Cai
Collection, full pre-payment ".
Claims (4)
1. a kind of low-voltage power line bandwidth carrier communication network failure diagnostic method, it is characterised in that be based on:
Carrier transmitting-receiving circuit --- to realize microprocessor and power line carrier communication network network by PLC signal coupling circuit
It is of coupled connections, and sends the power amplification of signal and receive the filtering and shaping amplification of signal；
The power line carrier communication network network is using low-voltage power line as telecommunication media, by same supply transformer power line
Bandwidth carrier concentrator, bandwidth carrier collector and power meter group at, to realize low-voltage electricity user power information converge
Poly-, transmission, interactive network communication；
Each bandwidth carrier collector is respectively as routing node or from node；
The bandwidth carrier concentrator is as host node, to complete networking control and network operation management；
Telecommunication circuit --- to realize microprocessor and the communication connection and microprocessor that manage computer and bandwidth carrier
The communication connection of concentrator, bandwidth carrier collector and electric energy meter；
Storage circuit --- to realize that node parameter including each node mounting locations archive information and microprocessor connect
Receive and handle the storage of data；
Human-computer interaction circuit --- to realize the interaction of operator and microprocessor；
Microprocessor --- as core devices, the microprocessor operating procedure is
Acquisition step acquires power line noise；
Judgment step judges whether to extract useful signal, then enables data frame step in this way, such as otherwise returns to acquisition step；
Useful signal is generated data frame by predetermined format and decodes generation message by data frame step；
Monitoring step monitors and opens message；
Analyzing step, according to specification classification analytic message, and by the message after classification storage parsing；
Topology step finds list message, forms corresponding network topology；
Positioning step, positioning failure node, the positioning step contain:
It calls survey substep together, calls each node historical information record surveyed and kept in host node together, obtain historical path library；
Detection substep, triggering host node cycle detection respectively enlivens number from node, obtain include offline from nodal information with
Uplink and downlink communicate the data including success rate, and the path by determining malfunctioning node from nodal information offline；
Frequency spectrum substep, according to the node mounting locations archive information of storage, forms each node physical logic connection relationship, and utilize
Spectrum analysis obtains each node signal quality information；
Differentiate substep, judges that malfunctioning node with the presence or absence of noise jamming and the type of noise, obtains according to result of spectrum analysis
Malfunctioning node enters the reason of off-line state；
Test substep, successively sends electric energy meter to malfunctioning node by telecommunication circuit and penetrates meter reading and immediate meter reading order, and root
According to return situation judging trouble location；
Output substep, by malfunctioning node positioning and failure cause, location information output display；
In analyzing step, data link layer will be reduced to the bandwidth carrier communication-network-message of initial data；During networking,
Each node finds beacon based on the received, perceives the neighbor node of oneself, and records, and forms a discovery list；Group
After the completion of net, in network from during maintenance, the discovery list message of this node is periodically broadcasted hair by each node
Cloth finds list message by interception node, forms bandwidth carrier host node, routing node, carrier wave from the dynamic network of node
Topological relation；Data link layer is divided into network management sublayer and medium access control sublayer, and network management sublayer realizes that broadband carries
The networking of wave communication network, the convergence and distribution of network operation, routing management and application layer message；When receiving message, by matchmaker
The message that body access control sublayer receives, is transmitted to application layer；When sending message, network management sublayer completes the classification of message,
The determination of routing policy, then transfers to medium access control sublayer to be sent.
2. low-voltage power line bandwidth carrier communication network failure diagnostic method according to claim 1, it is characterised in that: institute
It states in data frame step, the carrier wave analog signal on power line is reduced to data, be sent to physical layer and carry out at data frame receipt
Reason generates the signal received and is communicated in advance by the bandwidth carrier that preamble field, frame control field and payload data field form
Determine structured data frame；The preamble field is a periodic sequence, and the frame control field is to be used to transmit after preamble field
The field of information is controlled, the payload data field is the load data to be transmitted.
3. low-voltage power line bandwidth carrier communication network failure diagnostic method according to claim 2, it is characterised in that: institute
It states in data frame step, data frame decoding selects optimal FFT window by clock and frame synchronization, and so that subcarrier is kept orthogonal,
The starting position that frame is found out in OFDM symbol stream carries out diversity merging to frame control field after Fourier transformation FFT.
4. low-voltage power line bandwidth carrier communication network failure diagnostic method according to claim 3, it is characterised in that: institute
It states in data frame step, payload data field is deinterleaved and is gone to disturb, carry out Tubo decoding respectively, formation is reduced to original
The bandwidth carrier communication-network-message of data, is transported to data link layer by physical layer.
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| CN115102876A (en) * | 2022-05-17 | 2022-09-23 | 深圳市联强邦盛实业有限公司 | Method, apparatus, device and medium for diagnosing electric fault |
| CN116599547A (en) * | 2023-04-06 | 2023-08-15 | 山东电工电气集团数字科技有限公司 | Device and method for on-site rapid fault diagnosis of power line carrier communication |
| CN117792436B (en) * | 2024-02-26 | 2024-06-07 | 国网山西省电力公司临汾供电公司 | Detection device of broadband carrier module |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710521A (en) * | 2012-06-08 | 2012-10-03 | 科大智能科技股份有限公司 | Power line carrier communication system, master carrier and slave carrier for intermediate-voltage distribution network |
| CN103513134A (en) * | 2013-09-25 | 2014-01-15 | 国家电网公司 | Comprehensive diagnosis device and method for power on-site terminal faults |
| CN103760874A (en) * | 2014-01-28 | 2014-04-30 | 国家电网公司 | Method for locating meter reading fault source of low-voltage area |
-
2016
- 2016-03-18 CN CN201610158618.XA patent/CN105591826B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710521A (en) * | 2012-06-08 | 2012-10-03 | 科大智能科技股份有限公司 | Power line carrier communication system, master carrier and slave carrier for intermediate-voltage distribution network |
| CN103513134A (en) * | 2013-09-25 | 2014-01-15 | 国家电网公司 | Comprehensive diagnosis device and method for power on-site terminal faults |
| CN103760874A (en) * | 2014-01-28 | 2014-04-30 | 国家电网公司 | Method for locating meter reading fault source of low-voltage area |
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