CN104486031A - Long data transmission method for smart electric meter - Google Patents
Long data transmission method for smart electric meter Download PDFInfo
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- CN104486031A CN104486031A CN201410675061.8A CN201410675061A CN104486031A CN 104486031 A CN104486031 A CN 104486031A CN 201410675061 A CN201410675061 A CN 201410675061A CN 104486031 A CN104486031 A CN 104486031A
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Abstract
The invention relates to a long data transmission method for a smart electric meter. By adopting the long data transmission method for the smart electric meter, which is provided by the invention, the communication efficiency is improved. A scheme is as follows: 1, a client sends a request to the electric meter and carries a maximum number W of data blocks capable of being received by once streaming transfer; 2, the electric meter dismantles reply data into a plurality of data blocks and compares the number of the dismantled data blocks with W, if the number of the dismantled data blocks is greater than W, turning to step 3; if the number of the dismantled data blocks is smaller than or equal to W, turning to step 6; 3, the electric meter transmits W data blocks to the client and carries STR=0 in the last data block during this streaming transfer; 4, the client replies an acknowledgement frame, and 1 is added to BN and W is added to BNA to serve as new parameters to carry; 5, the electric meter receives the acknowledgement frame and judges whether the number of the remaining unsent data blocks is greater than W, if yes, turning to the step 3; if the number of the remaining unsent data blocks is smaller than or equal to W, turn to step 6; 6, the electric meter transmits each data block to the client and carries LB=1 and STR=0 when the last one data block is transmitted. The long data transmission method is used for the field of communication of smart electric meter.
Description
Technical field
The present invention relates to a kind of long data transmission method of intelligent electric meter, be mainly applicable to intelligent electric meter communication technical field.
Background technology
Along with the development of intelligent grid, the function of electric energy meter is more and more abundanter and powerful, in practical application, usually to read load curve, event log and TOU (Time Of Use) scheme etc. is set from intelligent electric meter, now, not only require that traffic rate is high, also long data transmission mechanism is required to intelligent electric meter.Due to intelligent electric meter communication send and receive buffer capacity limited, when between ammeter and client, the data of communications are long, deblocking is needed to send, but there is definition long data being had to block transmission in international communication standards IEC62056 series at present, but the method does not support breakpoint transmission, any one dropout of data block just causes whole loss of long data, and transmit leg must again from first database BOB(beginning of block) transmission; And the transmission of each data block needs the confirmation of recipient, communication efficiency is lower.
Summary of the invention
The technical problem to be solved in the present invention is: the long data transmission method providing a kind of intelligent electric meter for above-mentioned Problems existing, and transmit leg can adopt the form of stream to be sent by long data piecemeal, supports the disposable confirmation to multiple data block, to improve communication efficiency.
The technical solution adopted in the present invention is: the long data transmission method of intelligent electric meter, is characterized in that: carry following parameter in transmitting procedure,
With 1 and 0, LB, represents whether current transmission is last data block that this long data transmits respectively;
With 0 and 1, STR, represents whether this flow transmission terminates respectively;
W, communication under normal circumstances, represent once spread delivery of energy receive maximum data block number; In communication abnormality situation, represent that recipient wishes the data block number of a flow transmission reception;
BN, data block is numbered, from 1;
BNA, under normal circumstances, the BNA that recipient replys is the last correct data block numbering received in communication; In communication abnormality situation, the BNA that recipient replys is that first the data block number lost subtracts 1;
S1, client send to ammeter and copy and accept request, carry parameter LB=1, STR=0, BN=1, BNA=0 and its maximum data block number W that can receive of flow transmission simultaneously;
Copy and accept described in S2, ammeter receive after asking sum of parameters, reply data are disassembled into multiple data block, and judge to disassemble the number of rear data block and the size of W, if the number disassembling rear data block is greater than W, perform step S3; If the number disassembling rear data block is less than or equal to W, perform step S6;
S3, ammeter adopt the mode of flow transmission to transmit W data block successively continuously to client, and in last data block of this flow transmission, carry STR=0 inform that this flow transmission of client terminates;
S4, client reply acknowledgement frame, and make BN add 1, BNA is carried in described acknowledgement frame as new parameter after adding W;
After S5, ammeter receive described acknowledgement frame and parameter, judge the remaining size not sending out data block number and W, if remainder does not send out data block, number is greater than W, performs step S3; If remainder does not send out data block, number is less than or equal to W, performs step S6;
S6, ammeter adopt the mode of flow transmission that each data block is transferred to client successively continuously, and carry LB=1, STR=0 when transmitting last data block and inform this long data end of transmission of client, so far, and this long data end of transmission.
In transmitting procedure, if client does not receive the data block being numbered X, then client sends acknowledgement frame to ammeter, and carries parameter LB=1, STR=0, W=1, BNA=X-1, requires ammeter to resend to be numbered the data block of X.
In transmitting procedure, if client does not receive continuous n+1 the data block being numbered X-X+n, then client sends acknowledgement frame to ammeter, and carries parameter LB=1, STR=0, W=n+1, BNA=X-1, requires ammeter to resend to be numbered continuous n+1 the data block of X-X+n; Continuous n+1 the data block of the described X of being numbered-X+n is arranged in a flow transmission.
The long data transmission method of intelligent electric meter, is characterized in that: carry following parameter in transmitting procedure,
With 1 and 0, LB, represents whether current transmission is last data block that this long data transmits respectively;
With 0 and 1, STR, represents whether this flow transmission terminates respectively;
W, communication under normal circumstances, represent once spread delivery of energy receive maximum data block number; In communication abnormality situation, represent that recipient wishes the data block number of a flow transmission reception;
BN, data block is numbered, from 1;
BNA, under normal circumstances, the BNA that recipient replys is the last correct data block numbering received in communication; In communication abnormality situation, the BNA that recipient replys is that first the data block number lost subtracts 1;
Its data that will send are disassembled into multiple data block by S11, client, and only send a data block when first time sends request, and carry parameter LB=1, STR=0, W=1, BN=1, BNA=0 simultaneously;
What S12, ammeter received client please after sum of parameters, acknowledged client end, and carries parameter LB=1, STR=0, BN=1, BNA=1 and its maximum data block number W that can receive of flow transmission, informs the ammeter support flow transmission of its correspondence of client;
S13, client judge the remaining size not sending out data block number and W, if remainder does not send out data block, number is greater than W, perform step S14; If remainder does not send out data block, number is less than or equal to W, performs step S16;
S14, client adopt the mode of flow transmission to transmit W data block successively continuously to ammeter, parameter LB=0 entrained by transmitting procedure, and in last data block of this flow transmission, carry STR=0 inform that this flow transmission of ammeter terminates;
Acknowledgement frame replied by S15, ammeter, and make BN add 1, BNA is carried in described acknowledgement frame as new parameter after adding W, then performs step S13;
S16, client adopt the mode of flow transmission that each data block is transferred to ammeter successively continuously, and carry parameter LB=1 when transmitting last data block, STR=0 informs that in this communication of ammeter, client sends ED;
Response made by S17, ammeter, and carries parameter BNA, and its numerical value is the number of the multiple data blocks disassembled, and informs that all data blocks of client all correctly receive.
In transmitting procedure, if ammeter does not receive the data block being numbered X, then ammeter sends acknowledgement frame to client, and carries parameter LB=1, STR=0, W=1, BNA=X-1, requires client to resend to be numbered the data block of X.
In transmitting procedure, if ammeter does not receive continuous n+1 the data block being numbered X-X+n, then ammeter sends acknowledgement frame to client, and carries parameter LB=1, STR=0, W=n+1, BNA=X-1, requires client to resend to be numbered continuous n+1 the data block of X-X+n; Continuous n+1 the data block of the described X of being numbered-X+n is arranged in a flow transmission.
The invention has the beneficial effects as follows: the present invention is directed to the feature such as the transmission of intelligent electric meter, reception buffer zone finite capacity, propose a kind of based on streamed long data transmission method, and in each transmitting procedure, all carry five parameters (comprise LB, represent that whether current transmission is last data block of this long data transmission with 1 and 0 respectively; With 0 and 1, STR, represents whether this flow transmission terminates respectively; W, communication under normal circumstances, represent once spread delivery of energy receive maximum data block number; In communication abnormality situation, represent that recipient wishes the data block number of a flow transmission reception; BN, data block is numbered, from 1; BNA, under normal circumstances, the BNA that recipient replys is the last correct data block numbering received in communication; In communication abnormality situation, the BNA that recipient replys is that first the data block number lost subtracts 1), breakpoint transmission can either be realized, can support that again recipient is to the disposable confirmation of multiple data block, than existing long data block transmission method, this method obtains and significantly improves in communication efficiency and communication reliability.In addition, the present invention also provides technical foundation under intelligent grid environment to the demand of the large data acquisition of intelligent electric meter.
Accompanying drawing explanation
Fig. 1 be client of the present invention when copying and accepting ammeter ammeter reply the normal flow figure of deblocking transmission.
Fig. 2 be client of the present invention when copying and accepting ammeter ammeter reply the abnormal flow chart of deblocking transmission.
Fig. 3 be client parameters of the present invention to during ammeter send out the flow chart of deblocking transmission.
Embodiment
Have two kinds of situations to need to transmit long data in intelligent electric meter communication process, the first is client when reading some data as load curve, event log etc. from ammeter, and the data that intelligent electric meter is replied need adopt long data transmission method to disassemble; The second be then client parameters as TOU scheme to intelligent electric meter time, the data that client sends need adopt long data transmission method to disassemble.
In transmission method of the present invention, in each transmitting procedure, all carry five parameters:
LB, when getting 1, represents whether current transmission is last data block that this long data transmits; When getting 0, represent that current transmission is not last data block of this long data transmission;
STR, when getting 1, represents that this flow transmission does not terminate; When getting 0, represent that this flow transmission terminates;
W, communication under normal circumstances, represent once spread delivery of energy receive maximum data block number; In communication abnormality situation, represent that recipient wishes the data block number of a flow transmission reception;
BN, transmit leg send out the numbering of data block, from 1;
BNA, under normal circumstances, the BNA that recipient replys is the last correct data block numbering received in communication; In communication abnormality situation, the BNA that recipient replys is that first the data block number lost subtracts 1.
When client copies and accepts intelligent electric meter, the data that ammeter is replied are long, and transmitting procedure comprises:
S1, client send to ammeter and copy and accept request, carry parameter LB=1, STR=0, BN=1, BNA=0 and its maximum data block number W that can receive of flow transmission simultaneously;
Copy and accept described in S2, ammeter receive after asking sum of parameters, reply data are disassembled into multiple data block, and judge to disassemble the number of rear data block and the size of W, if the number disassembling rear data block is greater than W, perform step S3; If the number disassembling rear data block is less than or equal to W, perform step S6;
S3, ammeter adopt the mode of flow transmission to transmit W data block successively continuously to client, and in last data block of this flow transmission, carry STR=0 inform that this flow transmission of client terminates;
S4, client reply acknowledgement frame, and make BN add 1, BNA is carried in described acknowledgement frame as new parameter after adding W;
After S5, ammeter receive described acknowledgement frame and parameter, judge the remaining size not sending out data block number and W, if remainder does not send out data block, number is greater than W, performs step S3; If remainder does not send out data block, number is less than or equal to W, performs step S6;
S6, ammeter adopt the mode of flow transmission that each data block is transferred to client successively continuously, and carry LB=1, STR=0 when transmitting last data block and inform this long data end of transmission of client, so far, and this long data end of transmission.
In transmitting procedure, if client does not receive the data block being numbered X, then client sends acknowledgement frame to ammeter, and carries parameter LB=1, STR=0, W=1, BNA=X-1, requires ammeter to resend to be numbered the data block of X.
In transmitting procedure, if client does not receive continuous n+1 the data block being numbered X-X+n, then client sends acknowledgement frame to ammeter, and carries parameter LB=1, STR=0, W=n+1, BNA=X-1, requires ammeter to resend to be numbered continuous n+1 the data block of X-X+n; Continuous n+1 the data block of the described X of being numbered-X+n is arranged in a flow transmission.
As shown in Figure 1, the data that the present embodiment intelligent electric meter is replied need to disassemble into 5 transmission of data blocks, and one time its maximum data block number that can receive of flow transmission is 3, and concrete transmitting procedure is:
Client sends to ammeter and copies and accepts request, carries parameter LB=1, STR=0, W=3, BN=1, BNA=0 simultaneously, informs that its maximum data block number that can receive of its flow transmission of ammeter is 3;
Copy and accept after asking sum of parameters described in ammeter receives, reply data are disassembled into 5 data blocks, and adopt the mode of flow transmission to transmit 3 data blocks (numbering is respectively 1,2,3) successively continuously to client, and in last data block of this flow transmission, carry STR=0 inform that this flow transmission of client terminates;
Client replys acknowledgement frame, and carries parameter LB=1, STR=0, W=3, BN=2, BNA=3, with BNA=3 inform client be numbered 3 and data block before all correctly receive, namely the data block of numbering 1,2,3 all correctly receives;
Ammeter adopts the mode of flow transmission that two of remainder data blocks are transferred to client successively continuously, and carries LB=1, STR=0 when transmitting last data block and inform this long data end of transmission of client, so far, and this long data end of transmission.
As shown in Figure 2, communication abnormality is there is in intelligent electric meter when transmission the 1st and the 3rd data block, client does not receive this two data blocks, with BNA=0, client can represent that being numbered 0 later data block does not receive in acknowledgement frame, with W=1 represent be numbered 0 after only have 1 data block correctly not receive, intelligent electric meter resends the data block being numbered 1; Client is reaffirmed in request and is represented that being numbered 2 later data blocks does not receive with BNA=2, with W=3 represent client once spread delivery of energy receive maximum data block number be 3, follow-up 3 data blocks (numbering is respectively 3,4,5) transfer by intelligent electric meter, and carry LB=1, STR=0 inform this long data end of transmission of client when transmitting last data block, so far, this long data end of transmission.
When client parameters is to intelligent electric meter, when parameters data are long, transmitting procedure comprises:
Its data that will send are disassembled into multiple data block by S11, client, and only send a data block when first time sends request, and carry parameter LB=1, STR=0, W=1, BN=1, BNA=0 simultaneously;
What S12, ammeter received client please after sum of parameters, acknowledged client end, and carries parameter LB=1, STR=0, BN=1, BNA=1 and its maximum data block number W that can receive of flow transmission, informs the ammeter support flow transmission of its correspondence of client;
S13, client judge the remaining size not sending out data block number and W, if remainder does not send out data block, number is greater than W, perform step S14; If remainder does not send out data block, number is less than or equal to W, performs step S16;
S14, client adopt the mode of flow transmission to transmit W data block successively continuously to ammeter, parameter LB=0 entrained by transmitting procedure, and in last data block of this flow transmission, carry STR=0 inform that this flow transmission of ammeter terminates;
Acknowledgement frame replied by S15, ammeter, and make BN add 1, BNA is carried in described acknowledgement frame as new parameter after adding W, then performs step S13;
S16, client adopt the mode of flow transmission that each data block is transferred to ammeter successively continuously, and carry parameter LB=1 when transmitting last data block, STR=0 informs that in this communication of ammeter, client sends ED;
Response made by S17, ammeter, and carries parameter BNA, and its numerical value is the number of the multiple data blocks disassembled, and informs that all data blocks of client all correctly receive.
In transmitting procedure, if ammeter does not receive the data block being numbered X, then ammeter sends acknowledgement frame to client, and carries parameter LB=1, STR=0, W=1, BNA=X-1, requires client to resend to be numbered the data block of X.
In transmitting procedure, if ammeter does not receive continuous n+1 the data block being numbered X-X+n, then ammeter sends acknowledgement frame to client, and carries parameter LB=1, STR=0, W=n+1, BNA=X-1, requires client to resend to be numbered continuous n+1 the data block of X-X+n; Continuous n+1 the data block of the described X of being numbered-X+n is arranged in a flow transmission.
As shown in Figure 3, the data of the present embodiment client parameters need to disassemble into 5 transmission of data blocks, and the maximum data block number that flow transmission ammeter can receive is 3, and concrete transmitting procedure is:
Owing to not knowing whether ammeter supports streamed Bulk transport, only send a data block during client first time request, carry parameter LB=1, STR=0, W=1, BN=1, BNA=0 simultaneously;
What ammeter received client please after sum of parameters, acknowledged client end, and carry parameter LB=1, STR=0, W=3, BN=1, BNA=1, inform that the ammeter of its correspondence of client supports that flow transmission and its maximum data block number that can receive of flow transmission are 3;
Client adopts the mode of flow transmission to transmit 3 data blocks (numbering is respectively 2,3,4) successively continuously to ammeter, entrained parameter LB=0 in transmitting procedure, and in last data block of this flow transmission, carry STR=0 inform that this flow transmission of ammeter terminates;
Acknowledgement frame replied by ammeter, and carries parameter LB=1, STR=0, W=3, BN=2, BNA=4, with BNA=4 inform client be numbered 4 and data block before all correctly receive, the data block being namely numbered 1,2,3,4 all normally receives;
Client adopts the mode of flow transmission by remainder transmission of data blocks to ammeter, and carry parameter LB=1, STR=0 informs that in this communication of ammeter, client sends ED;
Response made by ammeter, and carries parameter LB=1, STR=0, W=1, BN=3, BNA=5, informs that all data blocks of client all correctly receive.
Claims (6)
1. a long data transmission method for intelligent electric meter, is characterized in that: carry following parameter in transmitting procedure,
With 1 and 0, LB, represents whether current transmission is last data block that this long data transmits respectively;
With 0 and 1, STR, represents whether this flow transmission terminates respectively;
W, communication under normal circumstances, represent once spread delivery of energy receive maximum data block number; In communication abnormality situation, represent that recipient wishes the data block number of a flow transmission reception;
BN, data block is numbered, from 1;
BNA, under normal circumstances, the BNA that recipient replys is the last correct data block numbering received in communication; In communication abnormality situation, the BNA that recipient replys is that first the data block number lost subtracts 1;
S1, client send to ammeter and copy and accept request, carry parameter LB=1, STR=0, BN=1, BNA=0 and its maximum data block number W that can receive of flow transmission simultaneously;
Copy and accept described in S2, ammeter receive after asking sum of parameters, reply data are disassembled into multiple data block, and judge to disassemble the number of rear data block and the size of W, if the number disassembling rear data block is greater than W, perform step S3; If the number disassembling rear data block is less than or equal to W, perform step S6;
S3, ammeter adopt the mode of flow transmission to transmit W data block successively continuously to client, and in last data block of this flow transmission, carry STR=0 inform that this flow transmission of client terminates;
S4, client reply acknowledgement frame, and make BN add 1, BNA is carried in described acknowledgement frame as new parameter after adding W;
After S5, ammeter receive described acknowledgement frame and parameter, judge the remaining size not sending out data block number and W, if remainder does not send out data block, number is greater than W, performs step S3; If remainder does not send out data block, number is less than or equal to W, performs step S6;
S6, ammeter adopt the mode of flow transmission that each data block is transferred to client successively continuously, and carry LB=1, STR=0 when transmitting last data block and inform that this communications of client terminates, so far, and this long data end of transmission.
2. the long data transmission method of intelligent electric meter according to claim 1, it is characterized in that: in transmitting procedure, if client does not receive the data block being numbered X, then client sends acknowledgement frame to ammeter, and carry parameter LB=1, STR=0, W=1, BNA=X-1, require ammeter to resend to be numbered the data block of X.
3. the long data transmission method of intelligent electric meter according to claim 1, it is characterized in that: in transmitting procedure, if client does not receive continuous n+1 the data block being numbered X-X+n, then client sends acknowledgement frame to ammeter, and carry parameter LB=1, STR=0, W=n+1, BNA=X-1, require ammeter to resend to be numbered continuous n+1 the data block of X-X+n; Continuous n+1 the data block of the described X of being numbered-X+n is arranged in a flow transmission.
4. a long data transmission method for intelligent electric meter, is characterized in that: carry following parameter in transmitting procedure,
With 1 and 0, LB, represents whether current transmission is last data block that this long data transmits respectively;
With 0 and 1, STR, represents whether this flow transmission terminates respectively;
W, communication under normal circumstances, represent once spread delivery of energy receive maximum data block number; In communication abnormality situation, represent that recipient wishes the data block number of a flow transmission reception;
BN, data block is numbered, from 1;
BNA, under normal circumstances, the BNA that recipient replys is the last correct data block numbering received in communication; In communication abnormality situation, the BNA that recipient replys is that first the data block number lost subtracts 1;
Its data that will send are disassembled into multiple data block by S11, client, and only send a data block when first time sends request, and carry parameter LB=1, STR=0, W=1, BN=1, BNA=0 simultaneously;
What S12, ammeter received client please after sum of parameters, acknowledged client end, and carries parameter LB=1, STR=0, BN=1, BNA=1 and its maximum data block number W that can receive of flow transmission, informs the ammeter support flow transmission of its correspondence of client;
S13, client judge the remaining size not sending out data block number and W, if remainder does not send out data block, number is greater than W, perform step S14; If remainder does not send out data block, number is less than or equal to W, performs step S16;
S14, client adopt the mode of flow transmission to transmit W data block successively continuously to ammeter, parameter LB=0 entrained by transmitting procedure, and in last data block of this flow transmission, carry STR=0 inform that this flow transmission of ammeter terminates;
Acknowledgement frame replied by S15, ammeter, and make BN add 1, BNA is carried in described acknowledgement frame as new parameter after adding W, then performs step S13;
S16, client adopt the mode of flow transmission that each data block is transferred to ammeter successively continuously, and carry parameter LB=1 when transmitting last data block, STR=0 informs that in this communication of ammeter, client sends ED;
Response made by S17, ammeter, and carries parameter BNA, and its numerical value is the number of the multiple data blocks disassembled, and informs that all data blocks of client all correctly receive.
5. the long data transmission method of intelligent electric meter according to claim 4, it is characterized in that: in transmitting procedure, if ammeter does not receive the data block being numbered X, then ammeter sends acknowledgement frame to client, and carry parameter LB=1, STR=0, W=1, BNA=X-1, require client to resend to be numbered the data block of X.
6. the long data transmission method of intelligent electric meter according to claim 4, it is characterized in that: in transmitting procedure, if ammeter does not receive continuous n+1 the data block being numbered X-X+n, then ammeter sends acknowledgement frame to client, and carry parameter LB=1, STR=0, W=n+1, BNA=X-1, require client to resend to be numbered continuous n+1 the data block of X-X+n; Continuous n+1 the data block of the described X of being numbered-X+n is arranged in a flow transmission.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107342983A (en) * | 2017-06-09 | 2017-11-10 | 深圳震有科技股份有限公司 | A kind of transactional handles the method and system of the efficient UDP communications of more subpackages |
| CN111341083A (en) * | 2020-01-15 | 2020-06-26 | 武汉星山河智能科技有限公司 | Electric meter wireless data transmission equipment based on NB-IOT |
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| CN102306954A (en) * | 2011-07-13 | 2012-01-04 | 广东电网公司电力科学研究院 | Intelligent power consumption information interactive management system |
| CN103219804A (en) * | 2013-05-08 | 2013-07-24 | 章志福 | Wireless electric energy management instrument applicable to energy management and control system |
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| CN102306954A (en) * | 2011-07-13 | 2012-01-04 | 广东电网公司电力科学研究院 | Intelligent power consumption information interactive management system |
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