CN109951212A - A kind of remote audio line data communication package based on PRIME standard - Google Patents
A kind of remote audio line data communication package based on PRIME standard Download PDFInfo
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- CN109951212A CN109951212A CN201910144230.8A CN201910144230A CN109951212A CN 109951212 A CN109951212 A CN 109951212A CN 201910144230 A CN201910144230 A CN 201910144230A CN 109951212 A CN109951212 A CN 109951212A
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Abstract
The invention discloses a kind of remote audio line data communication package based on PRIME standard is related to long-range local network communication field, for solving the problems, such as that monitoring, the order of control system, message carry out stable two-way communication on tone frequency channel wire.It include: the host side for controlling, managing entire localized network, the switching node of terminal as localized network establishes network with host side, carries out the slave generator terminal of data communication and two length as localized network communication link are 1 km or so, the tone frequency channel wire with positive and negative electrode output.It was verified that the communication plan has reliable networking, communication function, and can execute the movement of data transmission in time, there are huge practical potentiality and researching value to the automatic transmission system being applied on tone frequency channel wire.
Description
Technical field
The present invention relates to long-range localized networks to establish field, in particular to a kind of tone frequency channel wire bidirectional data communication field, it
Belong to the PLC technology in carrier communication field.
Background technique
Representative communication standard of the PRIME agreement as PLC, applying frequency bandwidth are CENELEC-A frequency band (41.9-
88.8kHz), communication process is strengthened instead of mono signal carrier communication mode using the OFDM technology with multicarrier
In anti-attenuation and antimierophonic ability.
For the transmission of the data of power line, PLC technology has outstanding communication quality, therefore is chiefly used in intelligent electricity
The fields such as the long-range control of net, street lamp.But traditional PLC module is all directly to be designed according to the characteristics of power line communication,
Have the shortcomings that volume is big, inherency is strong.Especially when the foundation for carrying out MAC layer communication network, connecting, existing PLC mould
Integration packaging is good for block, can not be suitable for other non-electrical line of force communications fields.Meanwhile tone frequency channel wire is only used to transmit voice letter
Number, purposes is very single, is not used in the processing to communication data in general monitoring system, equipment, transmission substantially.
Summary of the invention
When studying the communication system in certain fields (such as nuclear power environment), due to the particular provisions of plant area, it can not increase new
Communication link can only use the route being laid out, such as tone frequency channel wire.Since the communication channel of tone frequency channel wire is not ideal electric power
Line channel, during establishing actual network communication, it may appear that the problems such as data are blocked, are omitted, so as to cause network connection
Establish failure.
Under remote, in order to realize that stable network connection is established, reliable data communication process is carried out, to avoid
There is the incomplete situation of data receiver.
The invention proposes a kind of remote audio line data communication package based on PRIME standard, comprising: for controlling,
The host side for managing entire localized network is established network with host side, is carried out as the switching node of localized network terminal
The tone frequency channel wire of the slave generator terminal of data communication and two positive and negative electrodes output as localized network communication link.
One and only one switching node Node:C in one localized network, all upgradings from generator terminal, registration
Process is completed by Node:C.
The host side network connection establishment process is to send correlation using UART to SM2400 modules A by MCU and refer to
It enables, SM2400 modules A is forced to complete the netinit of host side.
The host side network initialization process the following steps are included:
Step 1 obtains the PRIME firmware protocols that SM2400 modules A uses；
Step 2, the address EUI-48 that host is configured in MLME；
Step 3, MLME initiate to establish the order of network；
The Interface status of step 4, configuration of IP V4 agreement；
Step 5, the Interface status for activating IPV4 agreement, check activation result；
Step 6 establishes IPV4 network connection, and IP, subnet mask, the gateway address of IPV4 agreement is arranged.
It is established in the step 3 comprising information such as SNA, CID in the data packet of networking command, and found in the process
One upgrades to switching node Node:C from node.
The return value of successful activation IPV4 network interface is 0x01 in the step 5.
In the step 6 MCU receive SM2400 modules A returned data value be 0 when, then the IPV4 network of host side is built
It stands successfully.
The networking of the slave generator terminal, login process are to send correlation using UART to SM2400 module B by MCU and refer to
It enables, SM2400 module B is forced to complete the network connection from generator terminal.
The slave generator terminal networking login process the following steps are included:
Step 1 obtains the PRIME firmware protocols that SM2400 module B is used；
Step 2, the address EUI-48 that slave is configured in MLME；
Step 3 finds suitable switching node, initiates registration request；
Step 4, MLME initiate logging request to host according to information such as SNA, CID of switching node；
Step 5, the IPV4 Interface status for configuring slave；
Step 6, activation IPV4 Interface status, check activation result；
Step 7 establishes IPV4 network connection, confirmation network connection result；
Step 8, the logging request for initiating network communication complete the login connection of IPV4 network.
The return value of successful activation IPV4 network interface is 0x01 in the step 6.
In the step 7 MCU receive SM2400 module B returned data value be 0 when, then built from the IPV4 network of generator terminal
It stands successfully.
In the step 8 MCU receive SM2400 module B returned data value be 0x02 when, then from the IPV4 net of generator terminal
Network logins successfully.
The SM2400 modules A and SM2400 module B is connected to the both ends of the tone frequency channel wire of two 1 kms or more.
The networking login mode of more slaves is the height according to task priority, is successively arranged by queue serial number
Team logs in.
More slave networking login mode specifically: set distance of the slave apart from host as x, the physical location of slave
For y, the address IP is z, and the representation method for obtaining slave position is (x, y, z).
When being ranked up label, the numerical value of x, y and z are got over hour, and it is higher that the networking of slave logs in priority, i.e., at first to
Host initiates networking logging request.If x, the numerical value of y and z is bigger, the networking login priority of slave is lower, more late to master
Machine initiates networking logging request.Meanwhile it can accurately confirm the slave number that network connection is successfully established with host.
The slave successfully log in number checking algorithm the following steps are included:
After step 1, each slave complete networking login, the data bit for defining " 0x01 " in the frame that communicates back is correlation data
Position, if the digit of correlation data position is By, communication frame length Le, the communication frame overall length that all slaves return after successfully logging in
Degree is Lt, and communication frame bits of offset is S.
Step 2 carries out traversal queries to Lt, is to indicate jointly with start bit " 0x3C " and stop bits " 0x3E ", by Lt into
Row segment processing.If every section is started with start bit, the data segment that stop bits stops is Pn, wherein which section n indicates.
Step 3, to every section of PnIn correlation data position carry out traversal queries, if finding a correlation data position, quantity
Factor a adds one certainly.
Step 4 obtains data segment number of segment N according to formula (1), after a data segment represents a slave success networking login
The frame that communicates back, so number of segment N be represents successfully networking log in slave number M, i.e. N=M.
Step 5 obtains the slave number L that failed networking logs according to formula (2).Wherein, T is total slave number of demand.
T-M=L (2)
And communication frame format, the data length returned after each slave success networking login is fixed.It is every in Le
The start bit and stop bits of segment data section are seamless connections, it is impossible to there are other data, it, must if there are other data bit
There is slave logon error occur surely.
It solves slave and the method for logon error occurs are as follows: abandon the data segment of traversal queries erroneous logons slave passback, see
The information received in host computer is examined, the slave logged in failed networking sends networking log on command again, re-starts networking
It logs in.
Since the value of correlation data position is " 0x01 ", therefore the IP address of slave is started setting up from 0x02.
Detailed description of the invention
In order to which the purpose of the present invention, technical solution is more clearly understood, below in conjunction with attached drawing, the present invention is done further
It is described in detail, in which:
Fig. 1 is a kind of remote audio line data communication package structural schematic diagram based on PRIME standard
Fig. 2 is host side netinit flow diagram
Fig. 3 is from generator terminal networking login process schematic diagram
Fig. 4 is more slave networking login mode schematic diagrames
Fig. 5 is the data sectional processing schematic of communication frame
Fig. 6 is the flow diagram for establishing overall network connection
Specific embodiment
In order to realize the two-way stable transmission that the data such as system command, message are controlled, monitored on tone frequency channel wire, improve tradition
Plc communication module is applicable only to the phenomenon in power line, improves the practicability and portability of PLC technology, and the present invention proposes
A kind of remote audio line data communication package based on PRIME standard.Mature PRIME consensus standard is utilized in the program,
Complete MAC layer host side on tone frequency channel wire in conjunction with MCU chip, established from the localized network of generator terminal, realize host side with from generator terminal
Data communication function.
With reference to the accompanying drawing technical solution in the embodiment of the present invention carry out it is clear, describe in detail.
The present invention it is a kind of based on the remote audio line data communication package of PRIME standard the realization process includes: utilizing host
MCU controls the localized network initialization that SM2400 communication module A completes host side, then controls SM2400 communication by slave MCU
Module B is completed from the foundation of generator terminal group-net communication process, then using switching node as the bridge of network upgrade, realization from
Machine to registration, the process logged in, then the tone frequency channel wire of about 1 km realize host side with from the bidirectional data communication of generator terminal.
It is as shown in Figure 1 a kind of structural schematic diagram of remote audio line data communication package based on PRIME standard,
SM2400 communication module A, B is to be designed according to SM2400 chip application manual, including SM2400 minimum system, send/connect
Receive buffer, transmission power amplifier and coupling circuit based on OPA564.
It is illustrated in figure 2 host side network initialization process schematic diagram, there are six steps altogether, assist first according to PRIME
The local communication network of standard initialization self MAC layer is discussed, then setting setting IP address type is IPV4, to establish base
Network connection in the address IPV4.
It is illustrated in figure 3 from generator terminal networking login process schematic diagram, one and shares eight steps, initializing itself
After MAC layer local communication network, the escalation process that node is carried out with the switching node of oneself SNA address matching is found, so
Initiate the logging request of network to host by switching node afterwards.The logging request of last host acknowledgement slave, if being wrapped in request
The SNA in localized network that the SNA information contained is controlled with host is matched, then agrees to log in, that is, successfully complete host and slave net
Network establishment of connection.Conversely, the then failure of host and slave network connection.
It is illustrated in figure 4 more slave networking login mode schematic diagrames, mode specifically: according to the height of task priority
It is low, queuing login is successively carried out by queue serial number.If distance of the slave apart from host is x, the physical location of slave is y, IP
Location is z, and the representation method for obtaining slave position is (x, y, z), such as example (100,1,123).When being ranked up label, x, y
It is got over hour with the numerical value of z, the networking login priority of slave is higher, i.e., initiates networking logging request to host at first.If x, y
Bigger with the numerical value of z, then the networking login priority of slave is lower, more late to initiate networking logging request to host.So in figure
The slave of queue serial number 01 logs at first, and the slave of queue serial number 93 finally logs in.
It is illustrated in figure 5 the data sectional processing schematic of communication frame, is connected to the network for confirming successfully to establish with host
Slave number.After completing networking login due to each slave, there is data bit in the frame that communicates back: " 0x01 ", therefore define
The data bit of " 0x01 " is correlation data position.If the digit of correlation data position be By, communication frame length Le, all slaves at
The communication frame total length that function returns after logging in is Lt, and communication frame bits of offset is S.Traversal queries are carried out to Lt, with start bit
" 0x3C " and stop bits " 0x3E " are common mark, and Lt is carried out segment processing.If every section is started with start bit, stop bits stops
Data segment only is Pn, wherein which section n indicates.To every section of PnIn correlation data position carry out traversal queries, if finding one
Correlation data position, Quantitative factor a add one certainly.Data segment number of segment N is obtained according to formula (1).Since a data segment represents one
The frame that communicates back after slave success networking login, so number of segment N is slave the number M, i.e. N=M for representing successfully networking login.
The slave number L that failed networking logs in is obtained according to formula (2).
It is illustrated in figure 6 the flow diagram for establishing overall network connection, is broadly divided into host MCU and slave MCU two
Point.Host MCU mainly executes the movement of host side network initialization, and logical to slave transmission after completing network connection and establishing
The message such as letter data, instruction.Slave MCU mainly executes the movement logged in from generator terminal networking, and after completing network connection and establishing
The message such as communication data, the instruction of receiving host, then feedback-related message is (in physical address, working condition of slave etc.
Hold) to host.
The present invention directly controls SM2400 communication module using MCU, on tone frequency channel wire, realizes foundation, the number of communication network
According to transmitted in both directions, for range is wide, quantity is more under adverse circumstances, can not in addition be laid with communication link control, monitoring system into
The transmission process of row high stability, provide it is a kind of be simple and efficient, portable strong remote audio line data communication package,
The use scope for increasing tone frequency channel wire reduces research and development cost.
It should be understood that embodiment provided above or embodiment are only the preferred embodiment of the present invention,
It is not intended to limit the invention, is replaced all within the spirits and principles of the present invention to any modification of the invention made, equally
It changes, improve, should be included in protection scope of the present invention.
Claims (7)
1. a kind of remote audio line data communication package of PRIME standard characterized by comprising entire for controlling, managing
The host side of localized network establishes network with host side, carries out data communication as the switching node of localized network terminal
The tone frequency channel wire that two positive and negative electrodes from generator terminal and as localized network communication link export；Have in one localized network and only has
One switching node Node:C, all upgradings from generator terminal, registration process are completed by Node:C, and can accurately confirmed into
Function and host establish the slave number of network connection.
2. a kind of remote audio line data communication package of PRIME standard, which is characterized in that the network connection of host side was established
Journey is to send dependent instruction using UART to SM2400 modules A by MCU, SM2400 modules A is forced to complete the network of host side
Initialization, wherein host side network initialization process the following steps are included:
Step 1 obtains the PRIME firmware protocols that SM2400 modules A uses；
Step 2, in management entity (the Media Access Control Layer Management in MAC layer
Entity, MLME) in configuration host the address EUI-48；
Step 3, MLME initiate to establish the order of network, include localized network address (Subnetwork in the data packet of the order
Address, SNA), connection identifier (Connection Identifier, CID) etc. information, and find one in the process
Upgrade to switching node Node:C from node；
The Interface status of step 4, configuration of IP V4 agreement；
Step 5, the Interface status for activating IPV4 agreement, check activation result, if the return value of successful activation IPV4 network interface
It is 0x01；
Step 6 establishes IPV4 network connection, IP, subnet mask, the gateway address of IPV4 agreement is arranged, if MCU receives SM2400
When the returned data value of modules A is 0, then the IPV4 network of host side is successfully established.
3. a kind of remote audio line data communication package of PRIME standard according to claim 1, which is characterized in that from
The networking of generator terminal, login process are to send dependent instruction using UART to SM2400 module B by MCU, force SM2400 module
B is completed from the network connection of generator terminal, wherein from generator terminal networking login process the following steps are included:
Step 1 obtains the PRIME firmware protocols that SM2400 module B is used；
Step 2, the address EUI-48 that slave is configured in MLME；
Step 3 finds suitable switching node, initiates registration request；
Step 4, MLME initiate logging request to host according to information such as SNA, CID of switching node；
Step 5, the IPV4 Interface status for configuring slave；
Step 6, activation IPV4 Interface status, check activation result, if the return value of successful activation IPV4 network interface is 0x01；
Step 7 establishes IPV4 network connection, and confirmation network connection is as a result, if MCU receives the returned data value of SM2400 module B
When being 0, then it is successfully established from the IPV4 network of generator terminal；
Step 8, the logging request for initiating network communication complete the login connection of IPV4 network, if MCU receives SM2400 module B
Returned data value be 0x02 when, then logined successfully from the IPV4 network of generator terminal.
4. a kind of remote audio line data communication package of PRIME standard according to claim 1, which is characterized in that
SM2400 modules A and SM2400 module B are connected to the both ends of the tone frequency channel wire of two 1 kms or more.
5. a kind of remote audio line data communication package of PRIME standard according to claim 1, which is characterized in that more
The networking login mode of slave is the height according to task priority, successively carries out queuing login by queue serial number, specifically:
If distance of the slave apart from host is x, the physical location of slave is y, and IP address z obtains the expression side of slave position
Method is (x, y, z)；When being ranked up label, the numerical value of x, y and z are got over hour, and the networking login priority of slave is higher, i.e., most
First networking logging request is initiated to host；If x, the numerical value of y and z is bigger, it is lower that the networking of slave logs in priority, it is more late to
Host initiates networking logging request.
6. a kind of remote audio line data communication package of PRIME standard according to claim 1, which is characterized in that from
Machine successfully log in number checking algorithm the following steps are included:
After step 1, each slave complete networking login, the data bit for defining " 0x01 " in the frame that communicates back is correlation data position,
If the digit of correlation data position is By, communication frame length Le, the communication frame total length that all slaves return after successfully logging in is
Lt, communication frame bits of offset are S；
Step 2 carries out traversal queries to Lt, is common mark with start bit " 0x3C " and stop bits " 0x3E ", Lt is divided
Section processing；If every section is started with start bit, the data segment that stop bits stops is Pn, wherein which section n indicates；
Step 3, to every section of PnIn correlation data position carry out traversal queries, if finding a correlation data position, Quantitative factor a
From adding one；
Step 4 obtains data segment number of segment N according to formula (1), and a data segment represents returning after a slave success networking logs in
Communication frame is passed, so number of segment N is slave the number M, i.e. N=M for representing successfully networking login；
Step 5 obtains the slave number L that failed networking logs according to formula (2).Wherein, T is total slave number of demand.
T-M=L (2).
7. a kind of remote audio line data communication package of PRIME standard according to claim 1, which is characterized in that from
The IP address of machine is started setting up from 0x02, and communication frame format, the data length returned after the success networking login of each slave
Be it is fixed, i.e. the start bit of every segment data section and stop bits are seamless connections in Le, it is impossible to other data occur, if occurring
Other data bit then must have slave logon error occur, then execute following steps:
The data segment of traversal queries erroneous logons slave passback is abandoned first, then observes the information received in host computer, it is finally right
The slave that failed networking logs in sends networking log on command again, re-starts networking login.
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| CN201910144230.8A CN109951212A (en) | 2019-02-27 | 2019-02-27 | A kind of remote audio line data communication package based on PRIME standard |
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| CN201910144230.8A CN109951212A (en) | 2019-02-27 | 2019-02-27 | A kind of remote audio line data communication package based on PRIME standard |
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