CN207269225U - A kind of power line communications terminal - Google Patents
A kind of power line communications terminal Download PDFInfo
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- CN207269225U CN207269225U CN201720798479.7U CN201720798479U CN207269225U CN 207269225 U CN207269225 U CN 207269225U CN 201720798479 U CN201720798479 U CN 201720798479U CN 207269225 U CN207269225 U CN 207269225U
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Abstract
This application discloses power line communications terminal to include：The signal that grid interface circuit is coupled to receive signal from power grid and will send is coupled to power grid；Signal conditioning circuit is connected with grid interface circuit, and to being coupled into, the signal come is amplified conditioning processing and the signal to being output to power grid carries out shaping enhanced processing；Digital analog converter is connected with signal conditioning circuit, converts analog signals into digital signal and converts digital signals into analog signal；The signal processing circuit storehouse of memory storage reconstruct, signal detection signal library, signal of communication storehouse；Reconfigurable processor is connected with memory and digital analog converter respectively, and the reconstruct of system signal scheme is carried out according to the signal processing circuit storehouse of reconstruct, signal detection signal library and signal of communication storehouse, configures reconstruction signal process circuit and controls communication process；By reconstruction signal process circuit, to use the signaling plan and modulation-demodulation technique for being most suitable for current power line channel situation, it is ensured that the reliable communication of communicating pair.
Description
Technical field
This application involves power-line carrier communication field, more particularly to a kind of power line communications terminal.
Background technology
Power-line carrier communication has already passed through the research of decades, is applied to solve power main and power distribution station earliest
Deng the scheduling between power grid 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) and three, broadband (1.8-250MHz) band limits is, it can be achieved that from 100bps, 500Kbps to hundreds of megabits per second
Traffic rate, and transmission range is respectively 150Km, several kilometers and tens meters.Relevant international organization such as IEEE and ITU etc.
Tissue has all formulated corresponding standard with regard to power line carrier communication, such as IEEE P1901, ITU G.hn and Home Plug etc., 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 the power grid of high quality abroad, once apply to the country of China power grid, effect
It is barely satisfactory.Reason is that the complexity of domestic power grid is significantly larger than foreign countries, and the intrinsic random, time-varying of power grid 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,
It must propose new adaptive solution.After new feasible technical solution is proposed, it is necessary to which equipment can be supported can
Reconstruct and low cost updates embedded code.But since the power line carrier communication product of domestic market uses special collection
Into the solution of circuit chip, neither possess flexibility, also can not be with the upgrading of technology and by reconstructing and upgrading software
Code, so as to protect the input of huge existing circuit arrangement.The technology and method of the utility model seek to solve above-mentioned ask
Topic.
Utility model content
The purpose of the application is to provide a kind of power line communications terminal, most suitable with use by reconstruction signal process circuit
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.
In order to solve the above technical problems, the application provides a kind of power line communications terminal, including：
The signal that is coupled to receive signal from power grid and will send is coupled to the grid interface circuit of power grid；
It is connected with the grid interface circuit, conditioning processing is amplified to being coupled into the signal come, and to being output to electricity
The signal of net carries out the signal conditioning circuit of shaping enhanced processing；
It is connected with the signal conditioning circuit, converts analog signals into digital signal and convert digital signals into simulation
The digital analog converter of signal；
Storage is for the signal processing circuit storehouse reconstructed, signal detection signal library, the memory in signal of communication storehouse；
Be connected respectively with the memory and the digital analog converter, according to the signal processing circuit storehouse of the reconstruct,
The signal detection signal library and the signal of communication storehouse carry out the reconstruct of system signal scheme, configuration reconstruction signal processing electricity
Road, and control the reconfigurable processor of communication process.
Optionally, the reconfigurable processor is digital signal processor or field programmable gate array.
Optionally, the signal conditioning circuit is specially program-controlled signal amplifying and conditioning circuit.
Optionally, the program further includes：
The communication interface being connected with the reconfigurable processor.
Optionally, the communication interface is specially USB interface and asynchronous serial port circuit.
Optionally, the memory is specially nonvolatile memory and DRAM memory.
Optionally, the program further includes：
The display being connected with the reconfigurable processor.
Optionally, the program further includes：The wireless telecom equipment being connected with the reconfigurable processor.
Optionally, the wireless telecom equipment is specially pluggable wireless telecom equipment.
Optionally, the pluggable wireless telecom equipment is specially NB-IoT equipment.
A kind of power line communications terminal provided herein includes：Grid interface circuit is coupled to receive signal simultaneously from power grid
The signal that will be sent is coupled to power grid；Signal conditioning circuit is connected with grid interface circuit, is carried out to being coupled into the signal come
Amplification conditioning processing and the signal progress shaping enhanced processing to being output to power grid；Digital analog converter and signal conditioning circuit phase
Even, convert analog signals into digital signal and convert digital signals into analog signal；At the signal of memory storage reconstruct
Manage circuit library, signal detection signal library, signal of communication storehouse；Reconfigurable processor is connected with memory and digital analog converter respectively,
The reconstruct of system signal scheme is carried out according to the signal processing circuit storehouse of reconstruct, signal detection signal library and signal of communication storehouse,
Configuration reconstruction signal process circuit simultaneously controls communication process；Believe as it can be seen that the power line communications terminal is reconstructed by reconfigurable processor
Number process circuit, to use the signaling plan and modulation-demodulation technique for being most suitable for current power line channel situation, it is ensured that communication
The reliable communication of both sides.
Brief description of the drawings
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to embodiment or existing
There is attached drawing needed 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, without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
The structure diagram for the power line communications terminal that Fig. 1 is provided by the embodiment of the present application.
Embodiment
The core of the application is to provide a kind of power line communications terminal, most suitable with use by reconstruction signal process circuit
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.
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 attached drawing, the technical solution 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, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art
All other embodiments obtained without making creative work, shall fall in the protection scope of this application.
Please refer to Fig.1, the structure diagram for the power line communications terminal that Fig. 1 is provided by the embodiment of the present application；The power line
Communication terminal (can be referred to as terminal) can include：
Grid interface circuit 400, the signal for being coupled to receive signal from power grid and will send are coupled to power grid.
, 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 realize.
Signal conditioning circuit 500 is connected with grid interface circuit 400, for being amplified conditioning to being coupled into the signal come
Processing, and the signal to being output to power grid carries out shaping enhanced processing.
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
Form, mainly grid interface circuit 400 is coupled into according to the instruction of reconfigurable processor 100 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 the signal for want D/A converter in digital analog converter 600 to be output to power grid is carried out by shaping amplification etc. nurses one's health work, allow
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 digital 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
Digital 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, such as can be the AC31 or AC32 of TI companies.It is main to complete to coupling connect from power grid
The reconfigurable processor that is attached thereto is digitized and is sent to after the filtering collected mail number, amplification, the conditioning work such as shaping into traveling
The processing of one step；On the other hand, to reconfigurable processor completion handle after digital 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 memory 200, user can be with the memory capacity of itself, storage speed
The demand such as degree and carrying cost makes choice.It is mainly responsible for the signal processing provided for reconfigurable processor 100 for reconstructing
Circuit code (being stored in signal processing circuit storehouse) stores and runtime data store function.Optionally, memory 200 has
Body is nonvolatile memory and DRAM memory.Such as nonvolatile memory such as local FLASH.It can store in advance
(i.e. signal of communication storehouse, the signal processing circuit storehouse of reconstruct further include modulatedemodulate in the signal waveform storehouse of the suitable power grid channel of design
Adjust scheme base), the signal library (i.e. signal detection signal library) for power grid 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 are 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 configures field programmable gate array or is allowed the corresponding code of dsp operation that circuit or the dynamic weight of function can be achieved
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 carry out the reconstruct of system signal scheme, configure at reconstruction signal
Circuit is managed, and controls communication process.
Specifically, the present embodiment is not defined reconfigurable processor 100, as long as reconfigurable processor 100 realizes communication
The channel detection function of both sides, the signal processing circuit reconstructed to needs are reconstructed function and control the communication of communicating pair
Function.Optionally, reconfigurable processor 100 for digital signal processor (TMS32PLC84 for example with TI companies or
TMS32F69 chips, the chip is according to the signal required by relevant criterion completion standard agreement and the processing work of information.) or it is existing
Field programmable gate array (FGPA) can also be microprocessor etc..It is mainly responsible for control A/D samplings, D/A conversions, channel detection
Scheme is implemented, according to the reconstruct of 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 connection mode of memory 200, control connected not support sector's transfer
The circuit or code of the restructural field programmable gate array of state or digital signal processor are restructural；Another kind 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, and the change of power grid channel can not be adapted to by the reconstruct of signal processing circuit,
So as to improve traffic rate.Since the signal processing scheme of the prior art is come complete by circuit form by application-specific integrated circuit
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 grid 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.
Based on above-mentioned technical proposal, power line communications terminal provided by the embodiments of the present application, is reconstructed by reconfigurable processor
Signal processing circuit, to use the signaling plan and modulation-demodulation technique for being most suitable for current power line channel situation, it is ensured that logical
Believe the reliable communication of both sides, can also realize monitoring communication quality in real time, play feedback effect, it is ensured that communicating pair is real-time
Communicate in Reliability Channel, so as to improve the reliability of communicating pair communication.
Based on above-described embodiment, please refer to Fig.1；The power line communications terminal can also include：
Communication interface 700, is connected with reconfigurable processor 100.
Specifically, the present embodiment does not limit specific 700 form of communication interface, optionally, communication interface 700 is specially
USB interface and asynchronous serial port circuit.It is mainly responsible for provides interface for system and exterior data communication；In addition, these interfaces
Or upgrade-system code provides communication port.
Based on above-mentioned any embodiment, please refer to Fig.1；The power line communications terminal can also include：
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.
Based on above-mentioned any embodiment, please refer to Fig.1；The power line communications terminal can also include：
Wireless telecom equipment 300, for being connected with reconfigurable processor 100.
Specifically, the present embodiment does not limit specific 300 form of wireless telecom equipment, it can alternately aid in believing
Road provides the passage of the exchange of timely information and related keyword parameter for power line channel detection；It can also be system code
Aerial upgrade provides communication and supports.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 utilize wireless telecom equipment into
The communication of row communicating pair.
The present embodiment is mainly that being upgraded by software code for solution power line carrier communication terminal is new so as to support
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.
Please refer to Fig.1, reconfigurable processor to complete the modulation of the signal of various supported power line carrier, PLC standards with
Work is demodulated, completes the management work of whole terminal.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 compile
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 provides 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
Choosing uses NB-IoT modules, the carrier class communication link provided using telecom operators.When initiating to communicate, terminal is first
Communicated by power line carrier, PLC channel, as power line carrier, PLC channel communication is unsuccessful, then pass through radio communication channel
Communicate, untill communicating successfully.Memory is mainly made of FLASH and DRAM memory, is carried for reconfigurable processor
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 of asynchronous serial port, USB port,
Mainly realize in local asynchronous serial communication or high-speed USB communication closely, 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 completion and the display work of electricity etc., are connected with reconfigurable processor, can be that LCD or OLED are shown
Device.
Wherein, code of the reconfigurable processor in memory, according to communication modulation mode set in advance and communication protocols
View carries out the exchange of the key parameter needed for the power grid channel detection of communicating pair, and is visited after completion of the exchange according to agreed upon channel
Survey wave sequence and carry out power grid channel detection；According to power grid channel detection as a result, being handed over according to communication modulation mode and communication protocol
Change the corresponding parameter of reliable communication；According to parameter reconstruction signal process circuit；Led to by the signal processing circuit after reconstruct
Letter.
The power line communications terminal provided based on above-mentioned technical proposal, the application, passes through memory code Local or Remote
Upgrade to realize the support to new standard, the investment of user will be greatlyd save.In addition, the terminal also supports arrowband Internet of Things
Communicate (NB-IoT), carrier class is provided for power operation enterprise using carrier class carrier network that is highly reliable and extensively covering
Telecommunication is supported, it is ensured that reliably gathers power grid real-time running data.
Power line communications terminal provided herein is described in detail above.Specific case used herein
The principle and embodiment of the application are set forth, the explanation of above example is only intended to the side that help understands the application
Method and its core concept.It should be pointed out that for those skilled in the art, the application principle is not being departed from
Under the premise of, some improvement and modification can also be carried out to the application, these are improved and modification also falls into the application claim
In protection domain.
Claims (10)
- A kind of 1. power line communications terminal, it is characterised in that including：The signal that is coupled to receive signal from power grid and will send is coupled to the grid interface circuit of power grid；It is connected with the grid interface circuit, conditioning processing is amplified to being coupled into the signal come, and to being output to power grid Signal carries out the signal conditioning circuit of shaping enhanced processing；It is connected with the signal conditioning circuit, converts analog signals into digital signal and convert digital signals into analog signal Digital analog converter；Storage is for the signal processing circuit storehouse reconstructed, signal detection signal library, the memory in signal of communication storehouse；It is connected respectively with the memory and the digital analog converter, according to the signal processing circuit storehouse of the reconstruct, described Signal detection signal library and the signal of communication storehouse carry out the reconstruct of system signal scheme, configure reconstruction signal process circuit, And control the reconfigurable processor of communication process.
- 2. power line communications terminal according to claim 1, it is characterised in that the reconfigurable processor is at digital signal Manage device or field programmable gate array.
- 3. power line communications terminal according to claim 2, it is characterised in that the signal conditioning circuit is specially can journey Control signal amplifying and conditioning circuit.
- 4. power line communications terminal according to claim 3, it is characterised in that further include：The communication interface being connected with the reconfigurable processor.
- 5. power line communications terminal according to claim 4, it is characterised in that the communication interface is specially USB interface With asynchronous serial port circuit.
- 6. power line communications terminal according to claim 5, it is characterised in that the memory is specially non-volatile deposits Reservoir and DRAM memory.
- 7. power line communications terminal according to claim 5, it is characterised in that further include：The display being connected with the reconfigurable processor.
- 8. according to claim 1-7 any one of them power line communications terminals, it is characterised in that further include：With the reconstruct The wireless telecom equipment that processor is connected.
- 9. power line communications terminal according to claim 8, it is characterised in that the wireless telecom equipment is specially to insert Pull out wireless telecom equipment.
- 10. power line communications terminal according to claim 9, it is characterised in that the pluggable wireless telecom equipment tool Body is NB-IoT equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720798479.7U CN207269225U (en) | 2017-07-03 | 2017-07-03 | A kind of power line communications terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720798479.7U CN207269225U (en) | 2017-07-03 | 2017-07-03 | A kind of power line communications terminal |
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| Publication Number | Publication Date |
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| CN207269225U true CN207269225U (en) | 2018-04-24 |
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| CN201720798479.7U Expired - Fee Related CN207269225U (en) | 2017-07-03 | 2017-07-03 | A kind of power line communications terminal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111580450A (en) * | 2019-02-15 | 2020-08-25 | 广东石油化工学院 | PLC signal reconstruction method and system |
-
2017
- 2017-07-03 CN CN201720798479.7U patent/CN207269225U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111580450A (en) * | 2019-02-15 | 2020-08-25 | 广东石油化工学院 | PLC signal reconstruction method and system |
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