CN107317603A - A kind of method of power line communication, system and power line communications terminal - Google Patents
A kind of method of power line communication, system and power line communications terminal Download PDFInfo
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- CN107317603A CN107317603A CN201710533141.3A CN201710533141A CN107317603A CN 107317603 A CN107317603 A CN 107317603A CN 201710533141 A CN201710533141 A CN 201710533141A CN 107317603 A CN107317603 A CN 107317603A
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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
- H04B3/542—Systems for transmission via power distribution lines the information being in digital form
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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
- H04B3/546—Combination of signalling, telemetering, protection
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Abstract
This application discloses a kind of method of power line communication, including：According to the exchange of the key parameter needed for the power network channel detection of communication modulation mode set in advance and communication protocol progress communicating pair, and carry out power network channel detection according to agreed upon channel detection wave sequence after completion of the exchange；According to power network channel detection result, the corresponding parameter of reliable communication is exchanged according to communication modulation mode and communication protocol；According to parameter reconstruction signal process circuit；Communicated by the signal processing circuit after reconstruct；This method is by reconstruction signal process circuit, to use the signaling plan and modulation-demodulation technique for being best suitable for current power line channel situation, it is ensured that the reliable communication of communicating pair；Disclosed herein as well is a kind of system of power line communication and power line communications terminal, with above-mentioned beneficial effect.
Description
Technical field
The application is related to power-line carrier communication field, more particularly to a kind of method of power line communication, system and
Power line communications terminal.
Background technology
Power-line carrier communication passes through the research of decades, is applied to solve power main and power distribution station earliest
Deng the scheduling between power network important node and the communication requirement needed for monitoring.With the development of intelligent power grid technology, power line carrier
The communication technology is also applied to automatic data logging field.Usual power line carrier communication is divided into ultra-narrow band (0.3-3kHz), arrowband (3-
500kHz) with three, broadband (1.8-250MHz) band limits, it can be achieved from 100bps, 500Kbps to hundreds of MBPSs
Traffic rate, and transmission range is respectively 150Km, several kilometers and tens meters.Related international organization such as IEEE and ITU etc.
Tissue has all formulated corresponding standard, such as IEEE P1901, ITU G.hn and Home Plug etc. with regard to power line carrier communication, I
State's power industry has also formulated corresponding professional standard, but the technology used belongs to fairly simple technology, and effect is poor.It is related
Although international standard product operational excellence on high-quality power network abroad, once apply to the domestic power network of China, effect
It is barely satisfactory.Reason is that the complexity of domestic power network is significantly larger than foreign countries, and the intrinsic random, time-varying of power network channel and
The acute variation of load, the presence of various bursty interferences, moreover, its communication quality highly depends on the position of receiving-transmitting sides.
Some fixed communication Design of Signal and modulation system are difficult to meet the reliable communication needs on complicated communication system of power grids channel,
New adaptive solution must be proposed.After new feasible technical scheme is proposed, it is necessary to which equipment can be supported can
Reconstruct and low cost updates embedded code.But because the power line carrier communication product of domestic market uses special collection
Into the solution of circuit chip, neither possess flexibility, can not also pass through the software that reconstructs and upgrade with the upgrading of technology
Code, so as to protect the input of huge existing circuit arrangement.The technology and method of the present invention seeks to solve the above problems.
The content of the invention
The purpose of the application is to provide a kind of method of power line communication, system and power line communications terminal, passes through reconstruct
Signal processing circuit, to use the signaling plan and modulation-demodulation technique for being best suitable for current power line channel situation, it is ensured that logical
Believe the reliable communication of both sides.
In order to solve the above technical problems, the application provides a kind of method of power line communication, methods described includes：
Needed for power network channel detection according to communication modulation mode set in advance and communication protocol progress communicating pair
The exchange of key parameter, and carry out power network channel detection according to agreed upon channel detection wave sequence after completion of the exchange；
According to power network channel detection result, reliable communication pair is exchanged according to the communication modulation mode and the communication protocol
The parameter answered；
According to the parameter reconstruction signal process circuit；
Communicated by the signal processing circuit after reconstruct.
Optionally, after being communicated by the signal processing circuit after reconstruct, in addition to：
Communication quality is monitored according to predetermined period；
When the communication quality is less than given threshold, then perform described according to communication modulation mode set in advance and communication
The step of exchange of key parameter needed for the power network channel detection of agreement progress communicating pair.
Optionally, it is described to monitor communication quality according to predetermined period, including：
Supervised according to predetermined period, communication quality is surveyed using error control coding.
Optionally, the power network channel that communicating pair is carried out according to communication modulation mode set in advance and communication protocol
The exchange of key parameter needed for detection, including：
The ultralow frequency range of communication initiator's equipment utilization, is led to according to communication modulation mode set in advance and communication protocol
The exchange of key parameter needed for the power network channel detection of letter both sides.
Optionally, it is described to carry out power network channel detection according to agreed upon channel detection wave sequence after completion of the exchange, including：
Low-frequency range or high band are utilized after completion of the exchange, and power network channel spy is carried out according to agreed upon channel detection wave sequence
Survey.
The application also provides a kind of system of power line communication, including：
Detecting module, the power network for carrying out communicating pair according to communication modulation mode set in advance and communication protocol is believed
The exchange of key parameter needed for road detection, and carry out power network channel according to agreed upon channel detection wave sequence after completion of the exchange
Detection；According to power network channel detection result, reliable communication correspondence is exchanged according to the communication modulation mode and the communication protocol
Parameter；
Reconstructed module, for according to the parameter reconstruction signal process circuit；
Communication module, for being communicated by the signal processing circuit after reconstruct.
Optionally, the program also includes：
Monitoring modular, for monitoring communication quality according to predetermined period；.
Optionally, the monitoring modular is specially and supervised according to predetermined period, and communication quality is surveyed using error control coding；When
The communication quality is less than given threshold, then performs the module of the detecting module.
The application also provides a kind of power line communications terminal, including：
Memory, for store code；
Reconfigurable processor, for the code in the memory, according to communication modulation mode set in advance and logical
The exchange of key parameter needed for the power network channel detection of letter agreement progress communicating pair, and believe after completion of the exchange according to agreement
Road detection wave sequence carries out power network channel detection；According to power network channel detection result, according to the communication modulation mode and institute
State communication protocol and exchange the corresponding parameter of reliable communication；According to the parameter reconstruction signal process circuit；Pass through the letter after reconstruct
Number process circuit is communicated.
Optionally, the program also includes：
Wireless Telecom Equipment, for being communicated with the external world.
The method of power line communication provided herein, including：According to communication modulation mode set in advance and communication
The exchange of key parameter needed for the power network channel detection of agreement progress communicating pair, and after completion of the exchange according to agreed upon channel
Detect wave sequence and carry out power network channel detection；According to power network channel detection result, according to communication modulation mode and communication protocol
Exchange the corresponding parameter of reliable communication；According to parameter reconstruction signal process circuit；Carried out by the signal processing circuit after reconstruct
Communication.
It can be seen that, this method determines the corresponding parameter of reliable communication by power network channel detection, so that reconstruction signal processing electricity
Road, to use the signaling plan and modulation-demodulation technique for being best suitable for current power line channel situation, it is ensured that communicating pair can
By communication；Present invention also provides a kind of system of power line communication and power line communications terminal, with above-mentioned beneficial effect,
This is repeated no more.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of application, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
The flow chart of the method for the power line communication that Fig. 1 is provided by the embodiment of the present application；
A kind of schematic flow sheet of the method for specific power line communication that Fig. 2 is provided by the embodiment of the present application；
The structured flowchart of the system for the power line communication that Fig. 3 is provided by the embodiment of the present application；
The structured flowchart for the power line communications terminal that Fig. 4 is provided by the embodiment of the present application；
The structured flowchart for another power line communications terminal that Fig. 5 is provided by the embodiment of the present application.
Embodiment
The core of the application is to provide a kind of method of power line communication, system and power line communications terminal, passes through reconstruct
Signal processing circuit, to use the signaling plan and modulation-demodulation technique for being best suitable for current power line channel situation, it is ensured that logical
Believe the reliable communication of both sides.
To make the purpose, technical scheme and advantage of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
In accompanying drawing, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described embodiment is
Some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of the application protection.
It refer to Fig. 1, the flow chart of the method for the power line communication that Fig. 1 is provided by the embodiment of the present application；This method can
With including：
S100, the power network channel detection institute for carrying out according to communication modulation mode set in advance and communication protocol communicating pair
The exchange of the key parameter needed, and carry out power network channel detection according to agreed upon channel detection wave sequence after completion of the exchange.
Specifically, the present embodiment not to specific communication modulation mode and communication protocol (to determine the frame knot of communication
The contents such as length, coding and the implication of structure and each field) it is defined.User can select according to actual conditions.For example
Communication modulation mode can be FSK (Frequency-shiftkeying, frequency shift (FS) modulation).The present embodiment is not also to key
The particular content of parameter is defined, for example, can include the order that modulation system is converted, and waveform sequence number etc. carries out power network channel
The rule and the agreement content of mode of detection.
Complete the channel sounding waveform sequence that communicating pair can be appointed by both sides after key parameter is exchanged and carry out channel
Detection.Specifically, the communications field can typically use pilot tone when carrying out channel detection.Due to current electricity can not be known in the present embodiment
The situation of network channel, the channel sounding waveform that can support system is tested one time；Specific channel sounding waveform sequence is set
Fixed this can be determined in initial exchange information.I.e. the present embodiment is not defined to specific channel sounding waveform sequence.
The present embodiment can be carried out when carrying out the exchange of key parameter using ultralow frequency range, i.e. communication initiator's equipment profit
Ultralow frequency range is used, needed for the power network channel detection according to communication modulation mode set in advance and communication protocol progress communicating pair
Key parameter exchange.It can be carried out when carrying out power network channel detection using low-frequency range or high band, that is, exchange completion
Low-frequency range or high band are utilized afterwards, and power network channel detection is carried out according to agreed upon channel detection wave sequence.
For example, the step first by communication initiator first with ultralow frequency range (i.e. 0.3-3KHz frequency ranges) with predetermined
Communication modulation mode (such as FSK) and communication protocol carry out the key parameter needed for the power network channel detection between communicating pair
Exchange (such as：First use low-frequency range (3-500kHz) or high band (1.8-250MHz), the order of modulation system conversion, ripple
Shape sequence number etc.).Complete the channel sounding waveform that both sides can be appointed with low-frequency range or high band by both sides after key parameter is exchanged
Sequence carries out the detection of channel.
S110, according to power network channel detection result, exchange reliable communication correspondence according to communication modulation mode and communication protocol
Parameter.
Specifically, the step can determine the corresponding parameter of reliable communication according to power network channel detection result.Pass through the ginseng
Number can determine required signal processing circuit.The step can utilize ultralow frequency range in the corresponding parameter of exchange reliable communication
Carry out, i.e., both sides complete to exchange with predetermined communication modulation mode and communication protocol by ultralow frequency range again after channel detection
The parameter of energy reliable communication between communicating pair.So that it is determined that being best suitable for signaling plan and the modulation of current power line channel situation
Demodulation techniques.Correspondence is chosen corresponding signal processing circuit and is reconstructed, so that communicating pair is able to using most suitable current
The signaling plan of power circuit channel conditions is communicated, it is ensured that the reliable communication of communicating pair.
S120, according to parameter reconstruction signal process circuit.
Specifically, the step is the parameter obtained according to power network channel detection, reconstruction signal process circuit, with using most suitable
The signaling plan and modulation-demodulation technique of power circuit channel conditions before being fated, it is ensured that the reliable communication of communicating pair.I.e. because
Modulation system known to both sides and its information sent out, such as receiving terminal do not receive correct Given information, certainly can be according to having received
To signal judge the situation of channel.Because both sides have completed the exchange of channel detection object information, therefore can be according to exchange
Result using both sides determine frequency range and modulation system communicated.The present embodiment is not defined to the mode of reconstruct,
It for example can be the code for the corresponding signal processing circuit for obtaining storage, be write with a brush dipped in Chinese ink to field programmable gate array (FGPA) i.e.
The code of signal processing circuit to reconstructing the need for using acquisition is configured to field programmable gate array.It can also be profit
It is that circuit or the dynamic restructuring of function can be achieved with the corresponding code of dsp operation.It can be matched somebody with somebody using FGPA some movable state
Put completion；The FPGA configuration code of being reloaded under controller control that can also be outside completes the reconstruct of internal circuit.
For example, according to the result of detection, reconstructing the signal chains process circuit of on-site programmable gate array internal, make it to optimise mesh
Power network channel between preceding communicating pair carries out high speed communication.
S130, communicated by the signal processing circuit after reconstruct.
Specifically, the step is to carry out high speed communication using the signal processing circuit after reconstruct.In high speed communication rank
Section, the aspect that communicating pair is finally determined by the signal processing circuit of reconstruct with both sides carries out middling speed or high-speed communication.
So that it is guaranteed that the reliable communication of communicating pair.
The method of the power line communication provided based on above-mentioned technical proposal, the embodiment of the present application, this method is believed by power network
Road detection determines the corresponding parameter of reliable communication, so that reconstruction signal process circuit, to be believed using most suitable current power circuit
The signaling plan and modulation-demodulation technique of road situation, it is ensured that the reliable communication of communicating pair.
Based on above-described embodiment, in order to ensure that communicating pair can reliable communication, this implementation in whole communication process
Example can also include after the signal processing circuit after by reconstruct is communicated：
Communication quality is monitored according to predetermined period；
When communication quality is less than given threshold, then perform according to communication modulation mode set in advance and communication protocol progress
The step of exchange of key parameter needed for the power network channel detection of communicating pair.
Specifically, the step, which works as communication quality in communication process, drops to predetermined degree, communication initiator is once more
Start channel detection process and reconstruct the signal processing circuit of correlation, be so repeated up to sign off.I.e. in communication matter
When amount drops to predetermined degree, the process of above-described embodiment is performed again, it is known that communicating pair sign off.
The method that the present embodiment does not limit specific monitoring communication quality.As long as the monitoring to communication quality can be realized
.The method of such as monitoring can utilize error control coding, realize the error detection to information, the higher explanation letter of such as error rate
Road degradation.Specific threshold value can determine that for example user is determined by specifically testing by user.Channel can also be monitored
In signal and noise ratio in judgement channel communication quality.Optionally, communication quality is monitored according to predetermined period, including：
According to predetermined period, communication quality is surveyed using error control coding.Further, the present embodiment does not limit specific predetermined week
Phase, can be that real-time monitoring or 20 seconds are monitored once.
Fig. 2 is turned next to, a kind of specific implementation of this method is given.The signaling plan arranged in Fig. 2 (can be with
It is interpreted as communication modulation mode set in advance and communication protocol), parameter exchanges (i.e. the exchange of key parameter).Judge channel matter
Amount is whether communication quality is less than thresholding (i.e. given threshold)；If so, then re-execute the program, if otherwise continue to communicate until
This sign off.
I.e. above-described embodiment can be included between three below stage, i.e. first stage, detection phase, progress communicating pair
Channel detection；Second stage, in the circuit reconfiguration stage, related signal processing circuit is reconstructed according to result of detection；Phase III, lead to
Letter stage, the signal processing circuit after reconstruct is communicated with the aspect finally determined and monitors communication quality in real time, when
Communication quality, which is reduced to after predetermined value, returns the first stage.
The method of the power line communication provided based on above-mentioned technical proposal, the embodiment of the present application, this method is believed by power network
Road detection determines the corresponding parameter of reliable communication, so that reconstruction signal process circuit, to be believed using most suitable current power circuit
The signaling plan and modulation-demodulation technique of road situation, it is ensured that the reliable communication of communicating pair, also monitor communication quality, play in real time
Feedback effect, it is ensured that communicating pair is communicated in Reliability Channel in real time, so as to improve the reliability of communicating pair communication.
The system and power line communications terminal of the power line communication provided below the embodiment of the present application are introduced, hereafter
The system and power line communications terminal of the power line communication of description can be mutually corresponding with the method for above-described power line communication
Reference.
It refer to Fig. 3, the structured flowchart of the system for the power line communication that Fig. 3 is provided by the embodiment of the present application；The system
It can include：
Detecting module 110, the electricity for carrying out communicating pair according to communication modulation mode set in advance and communication protocol
The exchange of key parameter needed for network channel detection, and carry out power network according to agreed upon channel detection wave sequence after completion of the exchange
Channel detection；According to power network channel detection result, the corresponding ginseng of reliable communication is exchanged according to communication modulation mode and communication protocol
Number；
Reconstructed module 120, for according to parameter reconstruction signal process circuit；
Communication module 130, for being communicated by the signal processing circuit after reconstruct.
Based on above-described embodiment, the system can also include：
Monitoring modular, for monitoring communication quality according to predetermined period；.
Based on above-described embodiment, monitoring modular is specially to be supervised according to predetermined period, and communication matter is surveyed using error control coding
Amount；When communication quality is less than given threshold, then the module of detecting module is performed.
It refer to Fig. 4, the structured flowchart for the power line communications terminal that Fig. 4 is provided by the embodiment of the present application；The power line
Communication terminal can include：
Memory 200, for store code；
Reconfigurable processor 100, for the code in memory, according to communication modulation mode set in advance and communication
The exchange of key parameter needed for the power network channel detection of agreement progress communicating pair, and after completion of the exchange according to agreed upon channel
Detect wave sequence and carry out power network channel detection；According to power network channel detection result, according to communication modulation mode and communication protocol
Exchange the corresponding parameter of reliable communication；According to parameter reconstruction signal process circuit；Carried out by the signal processing circuit after reconstruct
Communication.
Specifically, memory 200 can store corresponding code according to user's actual need,
It refer to Fig. 5, the structured flowchart for another power line communications terminal that Fig. 5 is provided by the embodiment of the present application；The electricity
Line of force communication terminal can include：
Wireless Telecom Equipment 300, for being communicated with the external world.
Grid interface circuit 400, the signal for being coupled to receive signal from power network and will send is coupled to power network.
, can be with any specific specifically, the present embodiment does not limit the concrete form of specific grid interface circuit 400
Realize power network signal coupling circuit realiration.
Signal conditioning circuit 500 is connected with grid interface circuit 400, for being amplified conditioning to being coupled into the signal come
Processing, and shaping enhanced processing is carried out to the signal for being output to power network.
Specifically, the present embodiment does not limit the concrete form of specific signal conditioning circuit 500, such as signal condition electricity
Road 500 is specially program-controlled signal amplifying and conditioning circuit.I.e. by the frequency bands supported program-controlled signal amplifying and conditioning circuit of system
Constitute, mainly according to the instruction of reconfigurable processor 100 grid interface circuit 400 is coupled into come reception signal be amplified
Deng processing, allow useful signal to amplify and suppress noise, output signal is met the requirement of A/D converter in digital analog converter 600；
On the other hand work is nursed one's health to want the signal that D/A converter in digital analog converter 600 is output to power network to carry out shaping amplification etc., allowed
The signal of output adapts to the requirement of current electric grid channel.
Digital analog converter 600 is connected with signal conditioning circuit 500, for converting analog signals into data signal and by number
Word signal is converted into analog signal.
Specifically, digital analog converter 600 specifically includes A/D converter and D/A converter, it is responsible for converting analog signals into
Data signal simultaneously converts digital signals into analog signal.The present embodiment does not limit the specific of specific digital analog converter 600
Form.
Further, digital analog converter 600 and signal conditioning circuit 500 can be integrated in a circuit board (single-chip integration
Circuit) on analog signal front end, for example can be the AC31 or AC32 of TI companies.It is main to complete to coupling connect from power network
The reconfigurable processor being attached thereto is digitized and is sent to after the conditioning work such as filtering, amplification, shaping of the collection of letters number to enter to advance
The processing of one step；On the other hand, to reconfigurable processor completion handle after data signal carry out digital to analogy signal conversion with
And conditioning work.The partial circuit is connected with reconfigurable processor.Carried in addition, grid interface circuit 400 is also responsible for whole terminal
Converted for required supply voltage.Grid interface circuit 400 is connected with analog signal front end, meanwhile, its terminal provided institute
Remaining each several part circuit of supply voltage and terminal is needed to be connected.
Memory 200, for storing the signal processing circuit storehouse for reconstructing, signal detection signal library, signal of communication storehouse.
Specifically, the present embodiment is not defined to memory 200, user can be with the memory capacity of itself, storage speed
The demand such as degree and carrying cost is selected.It is mainly responsible for reconfigurable processor 100 and provides signal transacting for reconstruct
Circuit code (stores) storage and runtime data store function i.e. in signal processing circuit storehouse.Optionally, memory 200 has
Body is nonvolatile memory and DRAM memory.For example local FLASH of such as nonvolatile memory.It can store in advance
(i.e. signal of communication storehouse, the signal processing circuit storehouse of reconstruct also include modulatedemodulate in the signal waveform storehouse of the suitable power network channel of design
Adjust scheme base), the signal library (i.e. signal detection signal library) for power network channel detection.
There can be reliable communication channel in whole communication process further for guarantee communicating pair, can also be right
The communication quality of communicating pair is monitored, it is therefore desirable to which the code of the related monitoring communication quality of storage, such as forward error is compiled
Code decoding storehouse.
These predefined circuit configuration codes or digital signal processor software code are stored in what memory was specified
Region, when needing reconfigurable circuit or digital signal processor software code, reconfigurable processor 100 obtains generation from the region of formulation
Code is configured or allowed the corresponding code of dsp operation that circuit or the dynamic weight of function can be achieved to field programmable gate array
Structure.
Reconfigurable processor 100, for being connected respectively with memory 200 and digital analog converter 600, according to the signal of reconstruct
Process circuit storehouse, signal detection signal library and signal of communication storehouse are carried out at the reconstruct of system signal scheme, configuration reconstruction signal
Circuit is managed, and controls communication process.
Specifically, the present embodiment is not defined to reconfigurable processor 100, as long as reconfigurable processor 100 realizes communication
The channel detection function of both sides, is reconstructed function to the signal processing circuit for needing to reconstruct and controls the communication of communicating pair
Function.Optionally, reconfigurable processor 100 be digital signal processor (TMS32PLC84 for example with TI companies or
TMS32F69 chips, the chip completes the signal required by standard agreement and the processing work of information according to relevant criterion.) or it is existing
Field programmable gate array (FGPA) can also be microprocessor etc..It is i.e. main to be responsible for control A/D samplings, D/A conversions, channel detection
Scheme implementation, the reconstruct according to detecting structure progress system signal scheme, wireless communication information exchange, signal waveform production, tune
Make the system management efforts such as demodulation, signal adaptive filtering, program-controlled amplifier and signal condition control, code upgrade.When weight
Structure processor 100 can be connected with memory with the connected mode of memory 200, control connected not support sector's transfer
The field programmable gate array of state restructural or the circuit of digital signal processor or code restructural；Another is that memory is straight
Connect and be connected with the field programmable gate array of support section dynamic reconfigurable.
Do not select reconfigurable processor in the prior art, but select dedicated IC chip scheme, application specific integrated circuit
The circuit of chip internal is not support reconstruct, it is impossible to the change of power network channel is adapted to by the reconstruct of signal processing circuit,
So as to improve traffic rate.Because the signal transacting scheme of prior art is by application specific integrated circuit is come complete by circuit form
Into, flexibility is excessively poor, once standard upgrade, can only be replaced with the chip for supporting new standard.Use the present embodiment not only can be with
The change of power network channel is adapted to by internal circuit reconstruct, the support to new standard can also be realized by code upgrade,
The investment of user will be greatlyd save.
Communication interface 700, is connected with reconfigurable processor 100.
Specifically, the present embodiment does not limit the specific form of communication interface 700, optionally, communication interface 700 is specially
USB interface and asynchronous serial port circuit.It is mainly responsible for system and provides interface with outside data communication；In addition, these interfaces
Or upgrade-system code provides communication port.
Display 800, for being connected with reconfigurable processor 100.
Specifically, display 800, the main display for completing required relevant information, can be that LCD or OLED are shown
Device.
Wireless Telecom Equipment 300, for being connected with reconfigurable processor 100.
Specifically, the present embodiment does not limit the specific form of Wireless Telecom Equipment 300, it can alternately aid in letter
Road detects the passage for the exchange for providing timely information and related keyword parameter for power line channel；Can also be system code
Aerial upgrade provides communication and supported.Optionally, Wireless Telecom Equipment 300 is specially pluggable Wireless Telecom Equipment.To save eventually
End spaces, makes terminal structure more flexible.The present embodiment does not limit the concrete form of specific pluggable Wireless Telecom Equipment yet.
Optionally, pluggable Wireless Telecom Equipment is specially NB-IoT equipment.It is just real using carrier communication i.e. when carrier communication success
The information exchange of existing communicating pair, if carrier communication is unsuccessful in pre-determined number, can be entered using Wireless Telecom Equipment
The communication of row communicating pair.
The present embodiment, which is mainly, solves can upgrading by software code so as to supporting new for power line carrier communication terminal
The problem of technical standard.New power line carrier, PLC standard is supported by upgrading its software code, so as to greatest extent
Protect the existing investment of user.In addition, the present embodiment also supports arrowband Internet of Things (NB-IOT：Narrow Band Internet
Of Thing) communication.
Refer to Fig. 5, reconfigurable processor to complete the modulation of the signal of various supported power line carrier, PLC standards with
Work is demodulated, the management work of whole terminal is completed.Complete the pipe to Wireless Telecom Equipment (such as pluggable Wireless Telecom Equipment)
Reason and the communication work of the wireless communication link in addition to power line carrier, PLC link, complete the management work to memory, complete
Communication and management work to communication interface, complete the display control work of display.Reconfigurable processor can be that scene can be compiled
Journey gate array (FPGA), digital signal processor (DSP) or the microcontroller containing digital signal processing function.Wireless Telecom Equipment
It can be that pluggable Wireless Telecom Equipment mainly provides the wireless communication link in addition to power line carrier, PLC for terminal, it is ensured that letter
Number transmitting.On the other hand the module can also realize that reliable aerial upgrade is provided for terminal system code by wireless channel
Communication is supported.Pluggable Wireless Telecom Equipment can be various wireless communication modules, such as LoRa, WiFi or NB-IoT module.It is excellent
The use NB-IoT modules of choosing, the carrier class communication link provided using telecom operators.When initiating communication, terminal is first
Communicated by power line carrier, PLC channel, such as power line carrier, PLC channel communication is unsuccessful, then passes through radio communication channel
Communicated, untill communicating successfully.Memory is mainly made up of FLASH and DRAM memory, is that reconfigurable processor is carried
Required memory space during for program circuit and operation.If reconfigurable processor is built-in with FLASH code memory, mould is stored
Block is mainly DRAM memory.Memory is connected with reconfigurable processor.Communication interface is mainly made up of asynchronous serial port, USB port,
Mainly realize in asynchronous serial communication locally closely or high-speed USB communication, can both complete the local exchange of information, also may be used
Worked by the local upgrade of above-mentioned communication interface completion code.Communication interface is connected with reconfigurable processor.Display is mainly
The information being locally displayed needed for completing and the display work of electricity etc., are connected with reconfigurable processor, can be that LCD or OLED are shown
Device.
The embodiment of each in specification is described by the way of progressive, and what each embodiment was stressed is and other realities
Apply the difference of example, between each embodiment identical similar portion mutually referring to.For device disclosed in embodiment
Speech, because it is corresponded to the method disclosed in Example, so description is fairly simple, related part is referring to method part illustration
.
Professional further appreciates that, with reference to the unit of each example of the embodiments described herein description
And algorithm steps, can be realized with electronic hardware, computer software or the combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software, generally describes the composition and step of each example according to function in the above description.These
Function is performed with hardware or software mode actually, depending on the application-specific and design constraint of technical scheme.Specialty
Technical staff can realize described function to each specific application using distinct methods, but this realization should not
Think to exceed scope of the present application.
Directly it can be held with reference to the step of the method or algorithm that the embodiments described herein is described with hardware, processor
Capable software module, or the two combination are implemented.Software module can be placed in random access memory (RAM), internal memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
Method, system and the power line communications terminal of a kind of power line communication provided herein have been carried out in detail above
It is thin to introduce.Specific case used herein is set forth to the principle and embodiment of the application, and above example is said
It is bright to be only intended to help and understand the present processes and its core concept.It should be pointed out that for the ordinary skill of the art
For personnel, on the premise of the application principle is not departed from, some improvement and modification can also be carried out to the application, these improvement
Also fallen into modification in the application scope of the claims.
Claims (10)
1. a kind of method of power line communication, it is characterised in that methods described includes：
The key needed for the power network channel detection of communicating pair is carried out according to communication modulation mode set in advance and communication protocol
The exchange of parameter, and carry out power network channel detection according to agreed upon channel detection wave sequence after completion of the exchange；
According to power network channel detection result, reliable communication is exchanged according to the communication modulation mode and the communication protocol corresponding
Parameter；
According to the parameter reconstruction signal process circuit；
Communicated by the signal processing circuit after reconstruct.
2. according to the method described in claim 1, it is characterised in that communication is carried out by the signal processing circuit after reconstruct
Afterwards, in addition to：
Communication quality is monitored according to predetermined period；
When the communication quality is less than given threshold, then perform described according to communication modulation mode set in advance and communication protocol
The step of exchange of key parameter needed for the power network channel detection of progress communicating pair.
3. method according to claim 2, it is characterised in that described to monitor communication quality according to predetermined period, including：
Supervised according to predetermined period, communication quality is surveyed using error control coding.
4. method according to claim 3, it is characterised in that described according to communication modulation mode set in advance and communication
The exchange of key parameter needed for the power network channel detection of agreement progress communicating pair, including：
The ultralow frequency range of communication initiator's equipment utilization, carries out communication double according to communication modulation mode set in advance and communication protocol
The exchange of key parameter needed for the power network channel detection of side.
5. method according to claim 4, it is characterised in that described to detect waveform according to agreed upon channel after completion of the exchange
Sequence carries out power network channel detection, including：
Low-frequency range or high band are utilized after completion of the exchange, and power network channel detection is carried out according to agreed upon channel detection wave sequence.
6. a kind of system of power line communication, it is characterised in that including：
Detecting module, the power network channel for carrying out communicating pair according to communication modulation mode set in advance and communication protocol is visited
The exchange of key parameter needed for surveying, and carry out power network channel spy according to agreed upon channel detection wave sequence after completion of the exchange
Survey；According to power network channel detection result, reliable communication is exchanged according to the communication modulation mode and the communication protocol corresponding
Parameter；
Reconstructed module, for according to the parameter reconstruction signal process circuit；
Communication module, for being communicated by the signal processing circuit after reconstruct.
7. system according to claim 6, it is characterised in that also include：
Monitoring modular, for monitoring communication quality according to predetermined period.
8. system according to claim 7, it is characterised in that the monitoring modular is specially to be supervised according to predetermined period, profit
Communication quality is surveyed with error control coding；When the communication quality is less than given threshold, then the module of the detecting module is performed.
9. a kind of power line communications terminal, it is characterised in that including：
Memory, for store code；
Reconfigurable processor, for the code in the memory, according to communication modulation mode set in advance and communication protocols
The exchange of key parameter needed for the power network channel detection of view progress communicating pair, and visited after completion of the exchange according to agreed upon channel
Survey wave sequence and carry out power network channel detection；According to power network channel detection result, according to the communication modulation mode and described logical
Believe that agreement exchanges the corresponding parameter of reliable communication；According to the parameter reconstruction signal process circuit；At the signal after reconstruct
Reason circuit is communicated.
10. power line communications terminal according to claim 9, it is characterised in that also include：
Wireless Telecom Equipment, for being communicated with the external world.
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| CN201710533141.3A CN107317603B (en) | 2017-07-03 | 2017-07-03 | Power line communication method and system and power line communication terminal |
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| CN107317603B (en) | 2020-12-18 |
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