CN105049084B - Power line carrier communication network-building method, device and system - Google Patents
Power line carrier communication network-building method, device and system Download PDFInfo
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- CN105049084B CN105049084B CN201510478351.8A CN201510478351A CN105049084B CN 105049084 B CN105049084 B CN 105049084B CN 201510478351 A CN201510478351 A CN 201510478351A CN 105049084 B CN105049084 B CN 105049084B
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/46—Monitoring; Testing
Abstract
The invention discloses a kind of power line carrier communication network-building method, device and system, wherein methods described includes：Communication network with central control node and multiple ordinary nodes is divided into 1 boss's net and N number of subnet；Each ordinary node in boss's net is set to send test signal to each subnet respectively with narrow band frequency；The response message for the ordinary node feedback that the test signal can be received in each subnet is received respectively, to test the ordinary node of reachable subnet of narrowband carrier in boss's net；At least one is chosen from the ordinary node of boss's net of reachable subnet of narrowband carrier, and the communication mode of selected ordinary node is set to bandwidth carrier and narrowband carrier multiplexer mode.Due to sending test signal using narrow band frequency, and the communication modes of corresponding ordinary node are set to bandwidth carrier and narrowband carrier multiplexer mode during boss is netted, and improve bandwidth carrier data transfer passes on distance.
Description
Technical field
The present invention relates to power line carrier communication network network field, and in particular to a kind of power line carrier communication network-building method,
Device and system.
Background technology
Electric power carrier communication technology from a proposal to develop to this day, has there is the history of many decades.Past, power carrier leads to
Letter technology (Power Line Communication, PLC) is mainly used in the transmission of the low speed control information of each in power network, such as certainly
Dynamic meter reading etc..And it is present, broadband power line carrier has become current development trend, and broadband PLC technology is provided to users
One technological approaches, for the various communications applications species based on power system provides a unified communication path platform,
Such as electricity meter-reading is applied in various scales, especially urgent to this demand in terms of low-voltage electrical apparatus control, distribution.
Compared with traditional narrow-band power line carrier technology, broadband power line carrier technology have high speed, noise resistance, automatically
Route, many advantages, such as coverage rate is high, but be due to China's power grid environment exist some areas aging circuit it is outmoded, wiring is not
The problems such as specification, cause the communication efficiency of some areas undesirable.From system perspective, due to the working range of broadband signal
The main working range 50-500Khz in the relative arrowband PLC signals of 2-30Mhz, with distance on power network, electric wire connecting junction etc. is decayed more
Greatly.
Therefore, the broadband power carrier-wave transmission effect on old power network how is improved, the problem of solving connective, is current
Promote broadband power line carrier urgent problem to be solved.
The content of the invention
For solve to pass on caused by broadband power line carrier communication point-to-point transmittability difference apart from it is small the problem of,
Application provides a kind of power line carrier communication network-building method, device and system, to improve power line carrier transmission ability.
According in a first aspect, provide a kind of power line carrier communication network-building method in a kind of embodiment, including：
Communication network with central control node and multiple ordinary nodes is divided into 1 boss's net and N number of subnet,
N is the integer more than or equal to 1；Boss's net includes central control node and at least one ordinary node, boss's net and each second son
Bandwidth carrier is unreachable between net, and bandwidth carrier is reachable between belonging to each node of same subnet；By each common of each subnet
Node switches to narrowband carrier pattern；Each ordinary node in boss's net is set to send test letter to each subnet respectively with narrow band frequency
Number；The response message for the ordinary node feedback that the test signal can be received in each subnet is received respectively, to test boss
The ordinary node of reachable subnet of narrowband carrier in net；At least one is chosen from boss's net of reachable subnet of narrowband carrier
Ordinary node, and the communication mode of selected ordinary node is set to bandwidth carrier and narrowband carrier multiplexer mode.
According to second aspect, a kind of power line carrier, PLC network device is provided in a kind of embodiment, including：
Sub-network division module, for the communication network with central control node and multiple ordinary nodes to be divided into 1
Boss's net and N number of subnet, N are the integer more than or equal to 1；Boss's net includes central control node and at least one common section
Point, bandwidth carrier is unreachable between boss's net and each subnet, and bandwidth carrier is reachable between belonging to each node of same subnet；Carry
Wave mode handover module, for each ordinary node of each subnet to be switched into narrowband carrier pattern；Test signal sending module,
For making each ordinary node during boss nets send test signal to each subnet respectively with narrow band frequency；Mould is tested in carrier communication
Block, the response message of the ordinary node feedback of the test signal can be received for receiving respectively, to test in each subnet
The ordinary node of reachable subnet of narrowband carrier in boss's net；Boss's net multiplexer node determining module, for choosing at least one
The ordinary node of individual boss's net from reachable subnet of narrowband carrier, and the communication mode of selected ordinary node is set
For bandwidth carrier and narrowband carrier multiplexer mode.
According to the third aspect, a kind of power line carrier, PLC group network system is provided in a kind of embodiment, including：
Coupler, transceiver channel and digital baseband processor, wherein：Coupler, for transceiver channel to be coupled into electric power
Line；Transceiver channel, the analog signal for coupler to be exported is converted to data signal and is transferred to digital baseband processor, also
Data signal for digital baseband processor to be exported is converted to analog signal and is transferred to coupler；Wherein, digital baseband
Processor is used to perform above-mentioned power line carrier communication network-building method.
According to the power line carrier, PLC network-building method and device of above-described embodiment, due to when carrier communication is tested, utilizing
Narrow band frequency sends test signal, it can be deduced that the reachable node of narrowband carrier signal, and corresponding common section during boss is netted
The communication modes of point are set to bandwidth carrier and narrowband carrier multiplexer mode, so as to can be put between boss's net and each subnet pair
Point communication, so as to improve the data transmission capabilities when transmitting data using bandwidth carrier, improves bandwidth carrier data biography
Defeated passes on distance.
Brief description of the drawings
Fig. 1 is the application scenarios of the power line carrier communication network-building method according to the embodiment of the present invention；
Fig. 2 is the flow chart of the power line carrier, PLC network-building method according to the embodiment of the present invention；
Fig. 3 is the structural representation of the power line carrier, PLC network device according to the embodiment of the present invention；
Fig. 4 is the schematic diagram of the power line carrier, PLC group network system according to the embodiment of the present invention.
Embodiment
The present invention is described in further detail below by embodiment combination accompanying drawing.
Fig. 1 shows the application scenarios of power line carrier communication network-building method according to embodiments of the present invention.Such as Fig. 1 institutes
Show, communication network includes having central control node CCO and ordinary node in A1 to A4 four subnets, wherein subnet A1
STA0, STA1, STA2, STA3, referred to as boss's net, and only there is ordinary node in subnet A2, A3 and A4, it is referred to as time subnet, it is main
Broadband connections can not be carried out between subnet and secondary subnet, and can only be communicated using narrow band transmission mode.
Embodiment 1：
Communicated in order that being realized between boss's net and secondary subnet, present embodiment discloses a kind of power line carrier, PLC networking side
Method, refer to Fig. 2, and this method comprises the following steps：
Step 100, the communication network with central control node and multiple ordinary nodes is divided into 1 boss's net and N
Individual subnet, N is the integer more than or equal to 1.Boss's net includes central control node CCO and at least one ordinary node
(station, STA), bandwidth carrier is unreachable between boss's net and each subnet, belongs to broadband between each node of same subnet
Carrier wave is reachable., it is necessary to build networking to complete the foundation of communication mechanism for broadband.It refer to Fig. 1, each network node quilt
It is assigned as central control node CCO and ordinary node.Central control node CCO is responsible for the foundation of network, the maintenance of network and
Function in terms of communication；STA1~STA9 as shown in Figure 1 is ordinary node STA, and certainly, those skilled in the art should manage
Solution, in the specific implementation, ordinary node STA number is not intended to limit.
In the specific implementation, each network node (including central control node CCO and each ordinary node STA) and meanwhile it is upper electricity or
Person is electric in priority within certain short time, and networking is carried out using existing standard networking algorithm (such as HPGP).In this process
In, because bandwidth carrier is apart from inaccessibility, accordingly, it is possible to occur what multiple isolated bandwidth carriers can not be found mutually
Subnet is comprising central control node CCO subnet is main subnet, such as central control node CCO shown in Fig. 1 and general
Logical node STA0, ordinary node STA1, ordinary node STA2 and ordinary node STA3；It is other to be free of central control node CCO's
Subnet is time subnet, such as ordinary node STA4 and ordinary node STA5 shown in Fig. 1, or ordinary node STA8 and common section
Point STA9.It should be noted that the ordinary node STA, ordinary node STA therein of varying number may be included in each subnet
Other ordinary node STA bandwidth carrier data in subnet where it can be sent and received.It should be noted that same
Network node inside subnet has identical ability to communicate, certainly, alleged identical to allow with the presence of certain error.
Step 200, each ordinary node of each subnet is switched into narrowband carrier pattern.Constituted in step 100 subnet
Cheng Hou, narrowband carrier pattern is switched to by each ordinary node of each subnet.In a particular embodiment, can be by presetting networking
The mode of time slot completes to characterize sub-network division, specifically, after networking time slot set in advance, in each subnet
Ordinary node STA switches to the reception pattern of narrowband carrier.In a particular embodiment, networking time slot can rule of thumb or knot
Conjunction is actually needed to set.
Step 300, each ordinary node in boss's net is made to send test signal (for example to each subnet respectively with narrow band frequency
Beacon signals), and the response message for the ordinary node feedback that test signal can be received in each subnet is received respectively, to survey
Try the ordinary node of reachable subnet of narrowband carrier in boss's net.In specific implementation, each ordinary node is with the in boss's net
One prefixed time interval twait0 switches to narrowband carrier pattern successively, completes carrier communication test；First prefixed time interval
An ordinary node is from test signal is sent to the maximum duration received needed for response message during twait0 is netted not less than boss.
Specifically, ordinary node (such as STA0) under central control node CCO control, is switched to narrowband carrier mould in boss's net
Formula, sends beacon signals, and wait the first prefixed time interval twait0 to wait other possible arrival with narrow band frequency
The response message of secondary subnet ordinary node；Then, another ordinary node (such as STA1) is in central control node CCO during boss nets
Control under, be switched to narrowband carrier pattern, perform the above-mentioned performed operations of ordinary node STA0, treat ordinary node STA1 etc.
Above-mentioned operation is performed after after the first prefixed time interval twait0, then switching to next ordinary node in boss's net, so as to travel through
The carrier communication test of each ordinary node in boss's net.Assuming that comprising M ordinary node STA in boss's net, then completing carrier wave and leading to
Time required for believing test is twait0 × M.
Step 400, at least one is chosen from the ordinary node of boss's net of reachable subnet of narrowband carrier, and will be selected
The communication mode of the ordinary node taken is set to bandwidth carrier and narrowband carrier multiplexer mode so that boss's net and each subnet it
Between can communicate.After each ordinary node STA carries out carrier communication test in being netted to boss, it can be deduced that in boss's net
Some ordinary node STA can be realized to communicate with the ordinary node STA narrowband carriers in time subnet, then, during can boss be netted
These ordinary nodes STA communication mode be set to bandwidth carrier and narrowband carrier multiplexer mode.In boss's net intercommunication
When, bandwidth carrier pattern can be used, so as to improve transmission rate；, can be general by these when being communicated between boss's net and secondary subnet
Logical node STA communication mode is set to narrowband carrier pattern, then, realizes the communication between boss's net and secondary subnet, carries
High carrier wave passes on distance, that is, improves ability to communicate.It should be noted that belong to the ordinary node of same subnet, by
There is bandwidth carrier accessibility in it, therefore, bandwidth carrier pattern can also be used by belonging between the ordinary node of same subnet
Communicated.
In a preferred embodiment, when performing step 300 carrier communication test, ordinary node receives each second son in boss's net
The response message of net ordinary node feedback includes：Narrowband signal strength and narrow band communication routing information.Wherein, narrowband signal strength
For characterizing boss's net ordinary node and this subnet ordinary node communication signal strength；Narrow band communication routing information is used for table
Levy the communication path that boss's net ordinary node test signal reaches this subnet ordinary node.Then, step 400 is being performed
When, optional narrowband signal strength most strong ordinary node, will be narrow with secondary subnet ordinary node as the node of multiplexer mode
Band signal intensity most strong boss's net ordinary node is set to bandwidth carrier and narrowband carrier multiplexer mode.It is common in boss net
Node passes through the narrow bandpass between two nodes with switching to narrowband carrier pattern when ordinary node communicates in this subnet
Letter path is communicated.
For example, it refer to Fig. 1, between boss's net A1 and secondary subnet A3, ordinary node STA0 in boss's net A1,
STA2 can realize that narrowband carrier communicates with the ordinary node STA6 in secondary subnet A3.Step 300 is being performed to ordinary node
When STA0 carrier communications are tested, the response message of ordinary node STA6 feedbacks includes：Ordinary node STA6 and ordinary node STA0
Between narrowband signal strength, ordinary node STA0 test signals reach ordinary node STA6 path such as STA0-STA6；Together
Sample, when execution step 300 is tested ordinary node STA2 carrier communications, the response message bag of ordinary node STA6 feedbacks
Include：Narrowband signal strength between ordinary node STA6 and ordinary node STA2, ordinary node STA2 test signals reach common
Node STA6 path such as STA2-STA6.Assuming that the narrowband signal strength between ordinary node STA6 and ordinary node STA2
It is better than the narrowband signal strength between ordinary node STA6 and ordinary node STA0, then can selects to determine commonly to save in boss's net
Point STA2 is the node of multiplexer mode, when being communicated between boss's net A1 and secondary subnet A3, ordinary node STA2 is switched to narrow
Band carrier mode, and communicated by the narrow band communication path STA2-STA6 between two nodes (STA2 and STA6).
It should be noted that the response message fed back according to each subnet ordinary node, can interpolate that out in boss's net A1
Each ordinary node (STA0~STA3) jumps (i.e. the narrowband carrier transmission of its each ordinary node) by one can connect second son
The quantity of net, and can be communicated with ordinary node STA in how many times subnet.
Certainly, each ordinary node (STA0~STA3) may not be up to all secondary subnets by a jump in boss's net A1.Example
Such as, when each ordinary node (STA0~STA3) one is jumped：Ordinary node STA0 can enter with the ordinary node STA4 in secondary subnet A2
The point-to-point narrowband carrier communication of row；Ordinary node STA2 can carry out point-to-point narrow with the ordinary node STA6 in secondary subnet A3
Band carrier communication；There is no ordinary node STA to realize in boss's net A1 narrow with any ordinary node STA progress in time subnet A4
Band carrier communication.Boss's net A1 can be jumped realization by its each ordinary node STA mono- and carry out arrowband with time subnet A2, secondary subnet A3
Carrier communication, but can not still be communicated with secondary subnet A4.
In order to realize boss net A1 communicated with secondary subnet A4 and each subnet between communication, in preferred embodiment
In, in addition to：
Step 500, the communication mode of some ordinary nodes in secondary subnet is set to bandwidth carrier and narrowband carrier is answered
Use pattern.Specifically include：By boss's net ordinary node and this subnet ordinary node narrowband signal strength most strong communication lines
The communication modes of some ordinary nodes in the secondary subnet that footpath is passed through are set to bandwidth carrier and narrowband carrier multiplexer mode, with
Boss's net ordinary node with ordinary node communicates in this subnet when by described subnet some ordinary nodes switch
For narrowband carrier pattern.Fig. 4 is refer to, when performing step 300 carrier communication test, ordinary node STA0 is sent out with narrow band frequency
The beacon signals sent reach general in time subnet A4 via the ordinary node STA4 in secondary subnet A2, ordinary node STA5 successively
Logical node STA8, then, ordinary node STA8 response message feeds back to boss via ordinary node STA5, ordinary node STA4
A1 ordinary node STA0 is netted, certainly, the response message of feedback can also include narrowband signal strength and narrow band communication path (example
Such as STA0-STA4-STA5-STA8).Then, can also will be general in secondary subnet A2 when performing step 400 multiplexer node and determining
Logical node STA4 and STA5 communication mode are set to bandwidth carrier and narrowband carrier multiplexer mode, in boss net A1 and time subnet
When A4 communicates, by the way that ordinary node STA4 and STA5 are switched into narrowband carrier pattern, so that boss's net A1 can pass through
Ordinary node STA0, STA4, STA5, STA8 of narrowband carrier pattern are realized and secondary with STA0-STA4-STA5-STA8 path
Subnet A4 is communicated.
It should be noted that in other embodiments, boss, which nets A1 and time path of subnet A4 narrow band communications, also a variety of,
Accordingly it is also possible to select narrow band communication path according to narrowband signal strength, it is typically chosen narrowband signal strength most strong path and makees
For the narrow band communication path between main subnet A1 and secondary subnet A4.
It should be noted that the communication in above-described embodiment between boss's net A1 and secondary subnet A4 is only retouched as example
State, it is impossible to regard as the whole of the present embodiment.Those skilled in the art describe covered thought according to above-mentioned example, can push away
Going out when there is the subnet of more stages, how to select suitable path, and how to select suitable ordinary node as multiplexing
The node of pattern.
It should be noted that in one embodiment, step 500 can be performed after step 400 is performed；In another reality
Apply in example, step 500 and step 400 can also be carried out simultaneously, i.e., test out the reachable ordinary node of narrowband carrier signal and
Behind path, the ordinary node and the ordinary node in time subnet of boss's net can be selected simultaneously, and is communicated mode sets
For bandwidth carrier and narrowband carrier multiplexer mode, so as to can be communicated between boss's net and each subnet.
In one embodiment, networking and the process built can be terminated with default networking total time；Another
In embodiment, it can also be defined by the default ordinary node STA that can realize communication quantity, according to each node feeding back
During response message, the quantity for the ordinary node STA that can set up communication is can interpolate that out, when the quantity reaches default quantity,
Networking and building process can also be terminated.
After networking structure is finished, the mould using bandwidth carrier inside proper communication flow, i.e. subnet just can be transferred to
Formula is communicated, and is communicated between subnet by the ordinary node of multiplexer mode using the pattern of narrowband carrier.
According to power line carrier, PLC group network system disclosed in above-described embodiment, by low frequency coupler and high-frequency coupler simultaneously
Electric force carrier transmission terminal is integrated into, hardware supported is provided for the transmission of bandwidth carrier and narrowband carrier, and shared same
One transmission channel and digital baseband processor, can be cost-effective, can farthest reduce system cost and power consumption, improves
Integrated level.
In power line carrier, PLC network-building method disclosed in above-described embodiment, data biography can be carried out based on bandwidth carrier
It is defeated, when bandwidth carrier is unreachable, corresponding network node is set to narrowband carrier pattern, carried out with narrow band frequency point-to-point
Data transfer, so as to improve power line carrier, PLC ability.On the one hand, the excellent of bandwidth carrier data transmission can be utilized
Point；On the other hand, the inaccessible deficiency present in bandwidth carrier is compensate for using narrowband carrier.In addition, the power carrier
Constructing communication network method can realize that autonomous discovery network node realizes that networking is built, so as to simplify network design and maintenance.
Embodiment 2
With embodiment 1 accordingly, present embodiments provide a kind of power line carrier, PLC network device, refer to Fig. 3, should
Power line carrier, PLC network device includes：Sub-network division module 10, carrier mode handover module 20, test signal sending module
60th, carrier communication test module 30 and boss's net multiplexer node determining module 40, wherein,
Sub-network division module 10 is used for having central control node CCO and multiple ordinary nodes to be divided into 1 boss's net
With N number of subnet, N is the integer more than or equal to 1；Boss's net includes central control node CCO and at least one ordinary node,
Bandwidth carrier is unreachable between boss's net and each subnet, and bandwidth carrier is reachable between belonging to each node of same subnet.
Carrier mode handover module 20 is used to each ordinary node of each subnet switching to narrowband carrier pattern.
Test signal sending module 60 is used to make each ordinary node in boss's net to be sent out respectively with narrow band frequency to each subnet
Send test signal.
Carrier communication test module 30 is used to receive respectively that the common section of the test signal can be received in each subnet
The response message of point feedback, to test the ordinary node of reachable subnet of narrowband carrier in boss's net.In a particular embodiment,
Ordinary node receives the response message of each subnet ordinary node feedback and included in boss's net：Narrowband signal strength and narrow band communication
Routing information, wherein, narrowband signal strength is used to characterize boss's net ordinary node and this subnet ordinary node signal of communication
Intensity；Narrow band communication routing information, which is used to characterizing boss's net ordinary node test signal, reaches the logical of this subnet ordinary node
Believe path.
Boss's net multiplexer node determining module 40 is used to choose at least one from the boss of reachable subnet of narrowband carrier
The ordinary node of net, and the communication mode of selected ordinary node is set to bandwidth carrier and narrowband carrier multiplexer mode,
So as to can be communicated between boss's net and each subnet.In a preferred embodiment, the institute of boss's net multiplexer node determining module 40
The ordinary node of selection is and secondary subnet ordinary node narrowband signal strength most strong boss's net ordinary node, the i.e. multiplexing of boss's net
Node determining module 40 is used to that width will to be set to secondary subnet ordinary node narrowband signal strength most strong boss's net ordinary node
Band carrier wave and narrowband carrier multiplexer mode, boss's net ordinary node with ordinary node communicates in this subnet when switch to it is narrow
Band carrier mode, and communicated by the narrow band communication path between two nodes.
In another embodiment, power line carrier, PLC network device also includes：Secondary subnet multiplexer node determining module 50,
For the communication mode of some ordinary nodes in secondary subnet to be set into bandwidth carrier and narrowband carrier multiplexer mode, including：
For selected boss's net ordinary node and this subnet ordinary node narrowband signal strength most strong communication path to be passed through
The communication modes of some ordinary nodes in the secondary subnet crossed are set to bandwidth carrier and narrowband carrier multiplexer mode, with the master
Subnet ordinary node by some ordinary nodes in secondary subnet when ordinary node communicates in this subnet with switching to narrowband carrier
Communication pattern.
Embodiment 3：
Fig. 4 is refer to, another embodiment of the present invention also discloses a kind of power line carrier, PLC group network system, including：Coupling
Device 1, transceiver channel 2 and digital baseband processor 3.Wherein,
Coupler 1 is used to transceiver channel being coupled to power line.In the present embodiment, coupler 1 includes low frequency coupler
11 and high-frequency coupler 12, low frequency coupler 11 and high-frequency coupler 12 are used to be coupled respectively to power line, thus build
The mixing broad-band communication path platform of power system narrowband carrier and bandwidth carrier.
The analog signal that transceiver channel 2 is used to export coupler is converted to data signal and is transferred to digital base band processor
Device 3, is additionally operable to the data signal that digital baseband processor 3 is exported being converted to analog signal and is transferred to coupler 1.Due to low
The signal that frequency coupler 11 and high-frequency coupler 12 are exported to digital baseband processor 3 is data signal, and low frequency coupler
11 and the drive signal of high-frequency coupler 12 be analog signal, therefore, in the embodiment of mixing broadband connections, low frequency coupling
Device 11 and high-frequency coupler 12 can be with common transmit-receive passages 2.Specifically, the analog signal output and high frequency of low frequency coupler 11
The analog signal receiving terminal 21 that the analog signal output of coupler 12 is all coupled to transceiver channel 2 (for example can be VGA electricity
Road), data signal is then converted to by analog-digital converter 22, and transmit to digital baseband processor 3；Low frequency coupler 11
Driving signal input and the driving signal input of high-frequency coupler 12 are all coupled to the drive signal output end of transceiver channel 2
23, after digital analog converter 24 of the data signal through transceiver channel 2 that digital baseband processor 3 is exported is converted to analog signal, lead to
Signal output part 23 of overdriving is transferred to low frequency coupler 11 and high-frequency coupler 12 respectively, to drive low frequency coupler 11 respectively
With high-frequency coupler 12.
Certainly, because power line transmission is forceful electric power, therefore, in a preferred embodiment, it is necessary to corresponding protection circuit.
Specifically, low frequency filtering protection circuit 41 and High frequency filter protection circuit 42 can be included, wherein, low frequency filtering protection circuit 41
Connect between tremendously low frequency coupler 11 and transceiver channel 2, High frequency filter protection circuit 42 is connected to high-frequency coupler 12 and transmitting-receiving
Between passage 2, low frequency carrier signal passage and high-frequency carrier signal passage are filtered and protected so as to realize respectively.
Digital baseband processor 3 is used to completing the modulation /demodulation of signal, the complex operations such as coding/decoding, it is final realize with
The transmitting-receiving of data message between coupler.Bandwidth carrier and narrowband carrier can be based on a set of same modulation demodulation system (examples
Such as OFDM), and based on a kind of same coding/decoding algorithm (such as turbo codes).For bandwidth carrier and narrowband carrier area
It is not different sub-carrier frequencies and number of subcarriers, and different data sampling rates and different message transmission rates.
Therefore, low frequency coupler 11 and high-frequency coupler 12 can be with common transmit-receive passages 2.In the present embodiment, digital baseband processor 3
The method in embodiment 1 is performed, to realize power line carrier communication networking and communication.
Use above specific case is illustrated to the present invention, is only intended to help and is understood the present invention, not to limit
The system present invention.For those skilled in the art, according to the thought of the present invention, it can also make some simple
Deduce, deform or replace.
Claims (12)
1. a kind of power line carrier communication network-building method, it is characterised in that including：
Communication network with central control node and multiple ordinary nodes is divided into 1 boss's net and N number of subnet, N is
Integer more than or equal to 1；Boss's net includes central control node and at least one ordinary node, boss's net and each subnet it
Between bandwidth carrier it is unreachable, bandwidth carrier is reachable between belonging to each node of same subnet；
Each ordinary node of each subnet is switched into narrowband carrier pattern；
Each ordinary node in boss's net is set to send test signal to each subnet respectively with narrow band frequency；
The response message for the ordinary node feedback that the test signal can be received in each subnet is received respectively, to test boss
The ordinary node of reachable subnet of narrowband carrier in net；
At least one is chosen from ordinary node of boss's net of reachable subnet of narrowband carrier, and by selected ordinary node
Communication mode be set to bandwidth carrier and narrowband carrier multiplexer mode.
2. power line carrier communication network-building method as claimed in claim 1, it is characterised in that
Each ordinary node sends test signal with narrow band frequency to each subnet successively with the first prefixed time interval in boss's net,
Complete carrier communication test；First prefixed time interval not less than boss net in an ordinary node from send test signal
To the maximum duration received needed for response message.
3. power line carrier communication network-building method as claimed in claim 1, it is characterised in that the response message includes：It is narrow
Band signal intensity and narrow band communication routing information；
The narrowband signal strength is used to characterize boss's net ordinary node and this subnet ordinary node communication signal strength；
The narrow band communication routing information reaches this subnet ordinary node for characterizing boss's net ordinary node test signal
Communication path.
4. power line carrier communication network-building method as claimed in claim 3, it is characterised in that selected ordinary node be with
Secondary subnet ordinary node narrowband signal strength most strong boss's net ordinary node.
5. the power line carrier communication network-building method as any one of claim 1-4, it is characterised in that also include：
The communication mode of some ordinary nodes in secondary subnet is set to bandwidth carrier and narrowband carrier multiplexer mode；Will be selected
The secondary subnet that boss's net ordinary node for taking and this subnet ordinary node narrowband signal strength most strong communication path are passed through
In the communication modes of some ordinary nodes be set to bandwidth carrier and narrowband carrier multiplexer mode, with the common section of boss net
Point by some ordinary nodes in described subnet when ordinary node communicates in this subnet with switching to narrowband carrier communication mould
Formula.
6. a kind of power line carrier communication network device, it is characterised in that including：
Sub-network division module, for the communication network with central control node and multiple ordinary nodes to be divided into 1 boss
Net and N number of subnet, N are the integer more than or equal to 1；Boss's net includes central control node and at least one ordinary node,
Bandwidth carrier is unreachable between boss's net and each subnet, and bandwidth carrier is reachable between belonging to each node of same subnet；
Carrier mode handover module, for each ordinary node of each subnet to be switched into narrowband carrier pattern；
Test signal sending module, for making each ordinary node during boss nets send test to each subnet respectively with narrow band frequency
Signal；
Carrier communication test module, the ordinary node feedback of the test signal can be received for receiving respectively in each subnet
Response message, to test the ordinary node of reachable subnet of narrowband carrier in boss's net；
Boss's net multiplexer node determining module, for choosing the general of at least one boss's net that time subnet is reached from narrowband carrier
Logical node, and the communication mode of selected ordinary node is set to bandwidth carrier and narrowband carrier multiplexer mode.
7. power line carrier communication network device as claimed in claim 6, it is characterised in that the response message includes：It is narrow
Band signal intensity and narrow band communication routing information；
The narrowband signal strength is used to characterize boss's net ordinary node and this subnet ordinary node communication signal strength；
The narrow band communication routing information reaches this subnet ordinary node for characterizing boss's net ordinary node test signal
Communication path.
8. power line carrier communication network device as claimed in claim 7, it is characterised in that selected ordinary node be with
Secondary subnet ordinary node narrowband signal strength most strong boss's net ordinary node.
9. the power line carrier communication network device as any one of claim 6-8, it is characterised in that also include：It is secondary
Subnet multiplexer node determining module, for the communication mode of some ordinary nodes in secondary subnet to be set into bandwidth carrier and narrow
Band carrier multiplexing pattern；Selected boss's net ordinary node and this subnet ordinary node narrowband signal strength is most strong logical
The communication modes of some ordinary nodes in the secondary subnet that letter path is passed through are set to bandwidth carrier and narrowband carrier multiplexing mould
Formula, with boss's net ordinary node with ordinary node communicates in this subnet when by some ordinary nodes in described subnet
Switch to narrowband carrier communication pattern.
10. a kind of power line carrier, PLC group network system, including coupler, transceiver channel and digital baseband processor, wherein：
The coupler is used to the transceiver channel being coupled to power line；
The analog signal that the transceiver channel is used to export the coupler is converted to data signal and is transferred to the numeral
BBP, is additionally operable to the data signal that the digital baseband processor is exported being converted to analog signal and is transferred to described
Coupler；
Characterized in that, the power line that the digital baseband processor is used to perform as described in claim 1-5 any one is carried
Wave communication network-building method.
11. power line carrier, PLC group network system as claimed in claim 10, it is characterised in that the coupler includes low frequency coupling
Clutch and high-frequency coupler；
The low frequency coupler and the high-frequency coupler are used to be coupled respectively to power line；
The low frequency coupler and the high-frequency coupler common transmit-receive passage.
12. power line carrier, PLC group network system as claimed in claim 11, it is characterised in that also include：Low frequency filtering is protected
Circuit and High frequency filter protection circuit；
The low frequency filtering protection circuit is connected between the low frequency coupler and the transceiver channel；
High frequency filter protection circuit is connected between the high-frequency coupler and the transceiver channel.
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| CN105530029A (en) * | 2015-12-09 | 2016-04-27 | 广东广联电子科技有限公司 | Power line carrier communication routing method and power line carrier communication system |
| CN106357302B (en) * | 2016-09-26 | 2018-12-21 | 武汉盛帆智能科技有限公司 | A kind of bandwidth carrier network-building method and multi-functional communication module |
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| US20060253697A1 (en) * | 2005-05-07 | 2006-11-09 | Schulz Gary D | System and method for securing communications over low voltage power lines |
| EP1770870B1 (en) * | 2005-10-03 | 2019-04-03 | Avago Technologies International Sales Pte. Limited | Powerline communication device and method |
| CN101694739B (en) * | 2009-10-10 | 2011-04-20 | 江苏省电力公司南京供电公司 | Double-channel multifunctional electric energy information collector and communication method thereof |
| US8576929B2 (en) * | 2011-06-30 | 2013-11-05 | Broadcom Corporation | Powerline communication device |
| CN102882556B (en) * | 2012-09-05 | 2015-12-09 | 深圳市国电科技通信有限公司 | A kind of acquisition method of power information, device and system |
| CN103607218B (en) * | 2013-10-28 | 2016-04-20 | 国家电网公司 | A kind of across frequency band power-line carrier communication system and communication means thereof |
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