CN205490538U - Full -band power line carrier communication device - Google Patents
Full -band power line carrier communication device Download PDFInfo
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- CN205490538U CN205490538U CN201620206311.8U CN201620206311U CN205490538U CN 205490538 U CN205490538 U CN 205490538U CN 201620206311 U CN201620206311 U CN 201620206311U CN 205490538 U CN205490538 U CN 205490538U
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- circuit
- bplc
- power line
- narrowband
- carrier
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Abstract
The utility model discloses a full -band power line carrier communication device, including BPLC treater, BPLC transceiver circuits and BPLC interconnected circuit, BPLC is finger beam area power line carrier communication, this system still includes narrowband carrier wave transmitting circuit, narrowband carrier wave receiving circuit, narrowband signal coupled circuit and crosses the zero circuit, narrowband carrier wave transmitting circuit and narrowband carrier wave receiving circuit all set up between narrowband signal coupled circuit and BPLC treater, narrowband signal coupled circuit is connected with the power line, narrowband carrier wave transmitting circuit and narrowband carrier wave receiving circuit link to each other with the pin of BPLC treater, cross the input termination power line of zero circuit, cross the IO port of the output termination BPLC treater of zero circuit. This full -band power line carrier communication device can show the success rate that the improvement was checked meter, and it is efficient to check meter.
Description
Technical field
This utility model is particularly to a kind of Whole frequency band device for power line carrier communications, for the data transcription of gauge table.
Background technology
Domestic from the beginning of 1996, there is the part producer power line carrier communication that begins one's study to check meter for electric lines of force, by 2006
Exploitation, the company paying close attention to power line carrier communication increases rapidly, but major part is for using general single chip, inside single-chip microcomputer
Realizing the modulation and demodulation of power line carrier, the carrier communication mode that this mode is developed is referred to as narrowband carrier, because it leads to
Letter bandwidth is from 3K-50KHz, narrower bandwidth, and traffic rate is from 50bps-5.4kbps, but is because it by electrical network
Interference ratio relatively big, point-to-point success rate is the highest, particularly in electrical network peak times of power consumption, substantially cannot copy and accept data, so occupying
The ammeter copy reading at civilian family all selects beginning morning 0 in every day.
Along with the call of the strong intelligent grid of nation-building, this communication mode is low due to traffic rate, it is impossible to carry bigger number
According to transmitting-receiving, market demand one faster speed, the communication technology of more high success rate, the high pass of the world, mstar, domestic Huawei
Hai Si recommends broadband power line carrier communication chip based on international standard Homeplug in succession, and the frequency range of its communication is
2MHz-30MHz, highest communication speed can reach 1Gbps, have been widely used on the Homeplug of family online, because wide
Band carrier communication frequency is high, and signal is decayed soon on electric lines of force, and simultaneously when electric lines of force is underground line, communication distance is the shortest,
The portion within the family that is only suitable for uses.In order to this technology being applied on power line carrier checks meter, the traffic rate of bandwidth carrier is dropped
Low to 10Mbps, in extreme environments, traffic rate can be reduced to 3Mbps, has obtained one in point-to-point communication distance
Fixed lifting, but in the poor power distribution station of some environment, in the case of particularly full underground line, communication success rate is very
Low, the demand of checking meter of the whole circumstances cannot be met equally.
Therefore, it is necessary to design a kind of new for the device for power line carrier communications checked meter.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of Whole frequency band device for power line carrier communications, this Whole frequency band electric power
Wire carrier wave communication device is easy to implement, can significantly improve the success rate checked meter.
The technical solution of utility model is as follows:
A kind of Whole frequency band device for power line carrier communications, including BPLC processor, BPLC transmission circuit and BPLC coupling electricity
Road；BPLC refers to broadband power line carrier communication；The broadband transmitting-receiving port of the side of BPLC transmission circuit and BPLC processor
Being connected, the opposite side of BPLC transmission circuit is connected with electric lines of force by BPLC coupling circuit；
Also include that narrowband carrier transtation mission circuit, narrowband carrier receive circuit, narrow band signal coupling circuit and zero crossing circuitry；
Narrowband carrier transtation mission circuit and narrowband carrier receive circuit be arranged at narrow band signal coupling circuit and BPLC processor it
Between；Narrow band signal coupling circuit is connected with electric lines of force；Narrowband carrier transtation mission circuit and narrowband carrier receive circuit and BPLC process
The pin of device is connected；The pin of BPLC processor includes I/O pin and DAC pin, and the general purpose I/O that I/O pin is common is drawn
Foot, I/O pin can be as enabling signal output part, and DAC pin refers to that numeral revolving die intends signal pins, i.e. BPLC process
The outfan of the DAC that device is internally integrated, by the output of DAC pin energy analog sine；
The input termination electric lines of force of zero crossing circuitry, the I/O port of the output termination BPLC processor of zero crossing circuitry.
Produced narrow band carrier modulation signal by BPLC processor and be sent to narrowband carrier transtation mission circuit, and narrowband carrier is received electricity
The narrowband carrier signal that road receives first carries out frequency discrimination in the reception circuit (MC3361) of narrowband carrier, then is input at BPLC
Reason device is demodulated, thus realizes narrowband carrier communication.
Transtation mission circuit in BPLC transmission circuit uses general PA chip, receives circuit and uses resistance, electric capacity and inductance composition
Multi-stage filter circuit.
PA chip uses ISL1571 cake core.
The reception circuit of narrowband carrier uses MC3361 chip (being responsible for receiving the frequency discrimination of FM signal).
BPLC processor uses the QCA7000 cake core of broadband power line carrier chip high pass.
The dispatch coil of the coupling transformer in BPLC coupling circuit separates, the former limit number of turn: transmission coil turn: receiving coil
The ratio of the number of turn is 4: 1: 5.
Sine wave signal by bandwidth carrier processor two kinds of different frequencies of generation: M0 (such as 138kHz) and M1 (such as 126kHz),
Two signal frequency differences are less than 15KHz, and the time every time sending M0 or M1 is set to τ, this time refer to M0 or
M1 duration, (τ≤10 microsecond), got the zero crossing of 220V sinusoidal ac by zero crossing circuitry, at zero crossing
The inner transmitting-receiving carrying out data of surrounding time t (t≤4 millisecond), each zero crossing sends 1bit valid data, and (valid data refer to one
Individual 0 or 1).
Based on this bandwidth carrier processor, by reception and transmission data, the transtation mission circuit of the communication of general purpose I/O foot external narrowband carrier
Employing discrete component overlaps, and receives circuit and uses general FSK frequency discrimination chip, increases the signal coupling of bandwidth carrier chip simultaneously
Close circuit；
Bandwidth carrier transtation mission circuit uses external PA mode, and PA chip uses ISL1571, and reception circuit is resistance, electric capacity and electricity
The multi-stage filter circuit of sense composition.
This communication system, when data reading system, first uses bandwidth carrier mode to carry out the ammeter's reading meter of power distribution station, after one takes turns and has copied,
Add up the unsuccessful ammeter checked meter, order of checking meter issue rear certain time do not return data or return error in data be unsuccessful copying
Table, then use narrowband carrier communication mode to carry out benefit to copy, until success rate is 100%.
Compared with prior art, the utility model has the advantage of:
Whole frequency band device for power line carrier communications of the present utility model, combines that narrowband carrier communication distance is remote, signal attenuation is a little slower
The advantage of point to-point communication distance, simultaneously also in relation with advantages such as the speed of bandwidth carrier communication are fast, perfect can solve whole platform districts
Checking meter demand, significantly improve the success rate checked meter, test shows to make whole platform district success rate of checking meter half an hour to reach 100%, energy
Meet the success rate of power information acquisition system and high efficiency demand.
It addition, the implementation cost of this programme is low, on the basis of original bandwidth carrier chip, increase narrow band communication circuit, Er Qietong
Cross the modulation and demodulation of original bandwidth carrier chip simulation narrowband carrier communication, it is easy to implement, be skillfully constructed, and effect is the most prominent
Go out, be key point place of the present utility model.
The modulation and demodulation device of broadband power line carrier processor is built-in bandwidth carrier, uses ARM9 kernel, uses OFDM
Modulation system, communication frequency 2-12MHz, physical layer maximum communication rate reaches 10Mbps, outside this bandwidth carrier communication chip
The bandwidth carrier transmission circuit, the signal coupling circuit that add keep constant, it is achieved broadband power line carrier communication.
This utility model achieves the complementation that bandwidth carrier communication communicates with narrowband carrier, compares narrowband carrier, significant increase
Traffic rate, meets intelligent grid demand, compare bandwidth carrier, significant increase point-to-point communication distance, particularly underground line
Under communication distance.
The operation such as the adjustment related in this programme and demodulation is chip internal hardware and completes, and belongs to existing mature technology, does not relates to
And program and method.
Accompanying drawing explanation
Fig. 1 is the general frame figure of Whole frequency band device for power line carrier communications；
Fig. 2 is narrowband carrier signal transtation mission circuit figure；
Fig. 3 is that narrowband carrier receives circuit diagram；
Fig. 4 is that narrowband carrier couples circuit diagram；
Fig. 5 is narrowband carrier zero crossing circuitry figure；
Fig. 6 is broadband carrier signal transmitting-receiving and coupling circuit.
Detailed description of the invention
For the ease of understanding this utility model, below in conjunction with Figure of description and preferred embodiment, this paper utility model is done more
, describe meticulously comprehensively, but protection domain of the present utility model is not limited to specific embodiment.
Unless otherwise defined, with those skilled in the art, all technical term used hereinafter is generally understood that implication is identical.This
Technical term used in literary composition is intended merely to describe the purpose of specific embodiment, is not intended to limit protection of the present utility model
Scope.
Embodiment:
Such as Fig. 1, a kind of Whole frequency band device for power line carrier communications, including BPLC processor, BPLC transmission circuit and BPLC
Coupling circuit；BPLC refers to broadband power line carrier communication；The broadband of the side of BPLC transmission circuit and BPLC processor is received
Mouth of making a start is connected, and the opposite side of BPLC transmission circuit is connected with electric lines of force by BPLC coupling circuit；
Whole frequency band device for power line carrier communications also includes that narrowband carrier transtation mission circuit, narrowband carrier receive circuit, narrow band signal coupling
Close circuit and zero crossing circuitry；
Narrowband carrier transtation mission circuit and narrowband carrier receive circuit be arranged at narrow band signal coupling circuit and BPLC processor it
Between；Narrow band signal coupling circuit is connected with electric lines of force；Narrowband carrier transtation mission circuit and narrowband carrier receive circuit and BPLC process
The pin of device is connected；The pin of BPLC processor includes I/O pin and DAC pin, and the general purpose I/O that I/O pin is common is drawn
Foot, I/O pin can be as enabling signal output part, and DAC pin refers to that numeral revolving die intends signal pins, i.e. BPLC process
The outfan of the DAC that device is internally integrated, by the output of DAC pin energy analog sine；
The input termination electric lines of force of zero crossing circuitry, the I/O port of the output termination BPLC processor of zero crossing circuitry.
Produced narrow band carrier modulation signal by BPLC processor and be sent to narrowband carrier transtation mission circuit, and narrowband carrier is received electricity
The narrowband carrier signal that road receives first carries out frequency discrimination in the reception circuit (MC3361) of narrowband carrier, then is input at BPLC
Reason device is demodulated, thus realizes narrowband carrier communication.
Transtation mission circuit in BPLC transmission circuit uses general PA chip, receives circuit and uses resistance, electric capacity and inductance composition
Multi-stage filter circuit.
PA chip uses ISL1571 cake core.
The reception circuit of narrowband carrier uses MC3361 chip (being responsible for receiving the frequency discrimination of FM signal).
BPLC processor uses the QCA7000 cake core of broadband power line carrier chip high pass.
The dispatch coil of the coupling transformer in BPLC coupling circuit separates, the former limit number of turn: transmission coil turn: receiving coil
The ratio of the number of turn is 4: 1: 5.
Sine wave signal by bandwidth carrier processor two kinds of different frequencies of generation: M0 (such as 138kHz) and M1 (such as 126kHz),
Two signal frequency differences are less than 15KHz, and the time every time sending M0 or M1 is set to τ, this time refer to M0 or
M1 duration, (τ≤10 microsecond), got the zero crossing of 220V sinusoidal ac by zero crossing circuitry, at zero crossing
The inner transmitting-receiving carrying out data of surrounding time t (t≤4 millisecond), each zero crossing sends 1bit valid data, and (valid data refer to one
Individual 0 or 1).
In Fig. 2, TX_EN enables signal for sending, and DAC_OUT is carrier wave output signal, and TX_OUT is amplified
Carrier wave output signal, wherein TX_OUT, DAC_OUT is bandwidth carrier output signal of processor, and TX_OUT is output to coupling
Close the carrier signal of circuit.The narrowband carrier signal transtation mission circuit of Fig. 3 uses discrete component to build, and processor is defeated by circuit
The signal gone out is after multistage amplification and filtering, then is launched by signal by coupling transformer.
For Fig. 3, the carrier signal coupled by coupling transformer, MC3361 after carrying out frequency discrimination, to RISE3902
Chip is demodulated, and is re-fed into bandwidth carrier chip and processes.
In Fig. 4, narrowband carrier signal coupling circuit is made up of safety electric capacity, coupling transformer, and safety electric capacity is by the friendship of 50Hz
Stream electricity is isolated.The carrier signal received from electrical network passes through safety electric capacity, is coupled to secondary from the former limit of coupling transformer,
It is demodulated subsequently into MC3361.
Fig. 5 is narrowband carrier zero crossing circuitry figure, and zero crossing circuitry is made up of electronic pressure and optocoupler, utilizes the break-make generation side of optocoupler
Ripple signal, is input to bandwidth carrier chip I/O foot and detects.Wherein ZERO is the zero passage being input to bandwidth carrier processor
Signal, bandwidth carrier chip carries out the transmitting-receiving of narrowband carrier signal according to the level of this signal.
As Fig. 6, broadband carrier signal transmitting-receiving and coupling circuit are made up of safety electric capacity, coupling transformer, multi-stage filter circuit,
Safety electric capacity filters out the alternating current of 50Hz, BPLC processor the carrier signal sent out is coupled by coupling transformer
On forceful electric power circuit, the bandwidth carrier chip that electric lines of force receives is by after safety electric capacity, after coupling transformer, passes through
It is input to bandwidth carrier after multiple-stage filtering and processes chip internal demodulation.
Bandwidth carrier chip circuit, bandwidth carrier chip embedded ARM9 kernel, outside need connects program FLASH, crystal and
Reset circuit etc..
Application effect explanation:
At present in the case of platform district circuit is reasonable, success rate of checking meter the day of pure narrow layer carrier wave can reach more than 98%！Broadband carries
Wave energy is accomplished 3 hours to check meter success rate 100%, but to there is the platform district of underground line, success rate of checking meter day may be low to 40%.
By implementing this programme, carry out pilot in multiple power distribution stations, all can accomplish that half an hour checks meter success rate 100%, with
Time meet 100% remote bill control.
Claims (6)
1. a Whole frequency band device for power line carrier communications, couples circuit including BPLC processor, BPLC transmission circuit and BPLC；
BPLC refers to broadband power line carrier communication；The broadband transmitting-receiving port of the side of BPLC transmission circuit and BPLC processor
Being connected, the opposite side of BPLC transmission circuit is connected with electric lines of force by BPLC coupling circuit；
It is characterized in that, also include that narrowband carrier transtation mission circuit, narrowband carrier receive circuit, narrow band signal coupling circuit and mistake
Zero circuit；
Narrowband carrier transtation mission circuit and narrowband carrier receive circuit be arranged at narrow band signal coupling circuit and BPLC processor it
Between；Narrow band signal coupling circuit is connected with electric lines of force；Narrowband carrier transtation mission circuit and narrowband carrier receive circuit and BPLC process
The pin of device is connected；The pin of BPLC processor includes I/O pin and DAC pin；
The input termination electric lines of force of zero crossing circuitry, the I/O port of the output termination BPLC processor of zero crossing circuitry.
Whole frequency band device for power line carrier communications the most according to claim 1, it is characterised in that sending out in BPLC transmission circuit
Power transmission road uses general PA chip, receives circuit and uses resistance, electric capacity and the multi-stage filter circuit of inductance composition.
Whole frequency band device for power line carrier communications the most according to claim 1, it is characterised in that PA chip uses ISL1571
Cake core.
Whole frequency band device for power line carrier communications the most according to claim 3, it is characterised in that the reception circuit of narrowband carrier is adopted
Use MC3361 chip.
Whole frequency band device for power line carrier communications the most according to claim 1, it is characterised in that BPLC processor uses broadband
The QCA7000 cake core of electric power line carrier chip high pass.
6. according to the Whole frequency band device for power line carrier communications described in any one of claim 1-5, it is characterised in that BPLC couples circuit
In coupling transformer dispatch coil separately, the former limit number of turn: send coil turn: the ratio of the receiving coil number of turn is 4: 1: 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620206311.8U CN205490538U (en) | 2016-03-17 | 2016-03-17 | Full -band power line carrier communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620206311.8U CN205490538U (en) | 2016-03-17 | 2016-03-17 | Full -band power line carrier communication device |
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| Publication Number | Publication Date |
|---|---|
| CN205490538U true CN205490538U (en) | 2016-08-17 |
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ID=56653749
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620206311.8U Expired - Fee Related CN205490538U (en) | 2016-03-17 | 2016-03-17 | Full -band power line carrier communication device |
Country Status (1)
| Country | Link |
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| CN (1) | CN205490538U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106781410A (en) * | 2016-12-15 | 2017-05-31 | 高格（天津）信息科技发展有限公司 | Data mining system for electric meter |
-
2016
- 2016-03-17 CN CN201620206311.8U patent/CN205490538U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106781410A (en) * | 2016-12-15 | 2017-05-31 | 高格（天津）信息科技发展有限公司 | Data mining system for electric meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20190317 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |