CN105282808B - A kind of communication module of intelligent electric energy meter dual mode communication channel division method - Google Patents
A kind of communication module of intelligent electric energy meter dual mode communication channel division method Download PDFInfo
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- CN105282808B CN105282808B CN201510571115.0A CN201510571115A CN105282808B CN 105282808 B CN105282808 B CN 105282808B CN 201510571115 A CN201510571115 A CN 201510571115A CN 105282808 B CN105282808 B CN 105282808B
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- 230000006854 communication Effects 0.000 title claims abstract description 58
- 238000004891 communication Methods 0.000 title claims abstract description 58
- 230000009977 dual effect Effects 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 230000000737 periodic effect Effects 0.000 claims abstract description 4
- 230000002452 interceptive effect Effects 0.000 abstract description 8
- 230000007175 bidirectional communication Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 6
- 230000003993 interaction Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
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- 239000000126 substance Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/02—Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a kind of communication module of intelligent electric energy meter bi-directional communication channel division methods, are related to communication technique field.The method of the present invention comprises the steps of：（1）Detect the first channel, second channel obtains the channel quality ratio and average channel quality of each channel；（2）The channel quality ratio and average channel quality of comprehensive first channel and second channel, select channel；（3）Encrypted transmission data, transmission data；（4）Periodic channel quality is tested, and switches more reliable channel in time.The method that the present invention provides channel selection for the division of intelligent electric meter communication module dual mode communication channel, ensure that the promptness, high reliability and high security of the transmission of data, effectively raises the rate and accuracy rate of meter reading；Present invention can apply to Automatic meter reading system, smart home, intelligent interactive system, Internet of Things, home automations etc..
Description
Technical field
The invention discloses a kind of communication module of intelligent electric energy meter bi-directional communication channel partitioning technologies, are related to mechanics of communication neck
Domain.
Background technology
In face of the upgrading of electric power power information acquisition system and the development of intelligent electric energy meter bi-direction interactive system, to electric power
The communication technology proposes the challenge of a new round.At present in uplink and downlink communication with the more communication technology has low pressure carrier wave, micropower
Wirelessly, near-field communication etc., these types of communication mode all there is it is apparent the drawbacks of, the communication environment of low-voltage power line is severe,
Carrier communication is easily changed by electric network impedance, noise, harmonic wave etc. influence, and it is unreliable to cause to communicate, and the primary real rate of copying is only 95%；
Micro power radio communication is influenced by reasons such as transmission range, building blocking, air interferences, and meter reading success rate is relatively low；Near field
Communication distance is shorter, and domestic development is at the early-stage.
In order to solve the coexisting issues of a variety of communication technologys in acquisition system, it is combined using communication, it is a variety of
Coordinate mutually between communication, automatically switch.Based on being combined at this stage with two kinds of communication modes, dual mode communication solution is formed
Mainstream, the defects of overcoming each communication pattern in this way, can greatly improve meter reading success rate, power communication system made really to walk
To practicality.The appearance of dual mode communication, channel partitioning technology become the successful key factor of dual mode communication.
Invention content
The purpose of the present invention, which is that, overcomes shortcoming and defect of the existing technology, provides a kind of intelligent electric energy meter communication
Module dual mode communication channel division method so that intelligent electric meter can ensure high quality communication effect, and two in dual mode communication
Kind communication pattern can mutually switch completion communication.
The invention mainly comprises：Channel quality prediction code, channel quality return code, predictive code channel quality, return code letter
Road quality, channel quality ratio, average channel quality, single channel encryption code
Channel quality prediction code：The channel quality prediction code that data are sent before sending by intelligent electric energy meter；
Channel quality return code：Intelligent electric energy meter receives higher level equipment return after channel quality prediction code is sent
Channel quality return code；
Predictive code channel quality：Intelligent electric energy meter sends the channel quality that channel quality prediction code obtains；
Return code channel quality：Intelligent electric energy meter receives the obtained channel quality of channel quality return code；
Channel quality ratio：The ratio of predictive code channel quality and return code channel quality；
Average channel quality：Predictive code channel quality is averaging with return code channel quality；
Single channel encryption code：The encryption data that intelligent electric energy meter superior equipment is sent；
CQI is channel quality indicator：English full name channel quality indication.
The implementation method of the present invention：
(1) the first channel is detected, obtains the first channel channel quality than Q1 and the first channel average channel quality CQI1；
1) intelligent electric energy meter dual mode communication module sends channel quality first by the first channel when sending reported data
Predictive code, higher level equipment receive the channel quality prediction code, obtain predictive code channel quality CQI11
2) and then higher level equipment sends channel quality return code to intelligent electric energy meter, obtains the first channel return code channel matter
Measure CQI12；
3) the predictive code channel quality obtained according to detection, return code channel quality calculate the first channel channel quality
Than Q1, the first channel average channel quality CQI1；
(2) second channel is detected, obtains the first channel channel quality Q2 and the first channel average channel quality CQI2；
1) intelligent electric energy meter dual mode communication module sends channel quality first by second channel when sending reported data
Predictive code, higher level equipment receive the channel quality prediction code, obtain predictive code channel quality CQI21
2) and then higher level equipment sends channel quality return code to intelligent electric energy meter, obtains second channel return code channel matter
Measure CQI22；
3) the predictive code channel quality obtained according to detection, return code channel quality calculate second channel channel quality
Than Q2, second channel average channel quality CQI2；
(3) comprehensive first channel channel quality is than Q1, the first channel average channel quality CQI1 and second channel channel matter
Amount, by algorithm, selects channel than Q2, second channel average channel quality CQI2；
CQI1 is compared with CQI2, if CQI1>CQI2 selects the first channel；
CQI1 is compared with CQI2, if CQI1=CQI2, carries out Q1 compared with Q2 if Q1<Q2＆＆ (| Q1-1 |=！|Q2-
1 |), the first channel of choosing；
CQI1 is compared with CQI2, if CQI1=CQI2, carries out Q1 Q1 compared with Q2>=Q2＆＆ (| Q1-1 |=！|Q2-1
|), the second channel of choosing；
CQI1 is compared with CQI2, if CQI1<CQI2 selects second channel；
(3) encrypted transmission data, transmission data；
After channel selection, in order to ensure the safety of data, after channel transmission data is encrypted, sent.
(4) periodic channel quality is tested, and switches more reliable channel in time.
Since the quality of communication channel can be affected by other factors, channel quality will not be always maintained at it is constant, so
Periodically test channel quality is very necessary, selects the channel transmission data of better quality, is effectively guaranteed the reality of data
Shi Xing, safety and reliability.
The advantageous effect that the present invention is reached：
The method that the present invention provides channel selection for the division of intelligent electric meter communication module dual mode communication channel, ensure that
Promptness, high reliability and the high security of the transmission of data effectively raise the rate and accuracy rate of meter reading；The present invention can
Applied to Automatic meter reading system, smart home, intelligent interactive system, Internet of Things, home automation etc..
Description of the drawings
Fig. 1 is the work block diagram of the present invention；
Fig. 2 is first communication channel work block diagram of the present invention；
Fig. 3 is the second communication channels work block diagram of the invention；
Fig. 4 is work flow diagram of the present invention；
Fig. 5 is embodiment block diagram of the present invention.
Specific embodiment
In conjunction with the accompanying drawings and embodiments to the detailed description of the invention：
In conjunction with the accompanying drawings and embodiments to the detailed description of the invention：
Attached drawing 1：The invention mainly comprises channel quality prediction code, channel quality return code, predictive code channel quality value, return
Return code channel quality value, channel quality ratio, average channel quality, single channel encryption code.
The present invention mainly by being detected to the first channel, second channel upper signal channel quality in dual mode communication module, into
The optimum selecting of two kinds of channels of row is periodically tested by two kinds of channel qualities, ensures that data are sent by high-quality channel,
It ensure that real-time, the reliability of transmission information.Principle is：(1) the first channel is detected, second channel obtains the letter of each channel
Road mass ratio and average channel quality；(2) the channel quality ratio and average channel quality of comprehensive first channel and second channel, leads to
Algorithm is crossed, selects channel；(3) encrypted transmission data, transmission data；(4) periodic channel quality is tested, and is switched in time more reliable
Channel.The method that the present invention provides channel selection for the division of intelligent electric meter communication module dual mode communication channel, ensure that
Promptness, high reliability and the high security of the transmission of data effectively raise the rate and accuracy rate of meter reading；The present invention can
Applied to Automatic meter reading system, smart home, intelligent interactive system, Internet of Things, home automation etc..
The work block diagram of first communication channel shown in attached drawing 2, operation principle as shown in Figure 2 are：Intelligent electric energy meter passes through first
Channel sends quality channel predictive code, and after higher level equipment receives channel quality prediction code, analysis detection channel quality obtains pre-
Survey code channel quality CQI11；Intelligent electric energy meter higher level equipment retransmits channel quality return code, intelligent electric energy meter analysis detection letter
Road quality obtains return code channel quality CQI12；Higher level equipment contains CQI in channel quality return code is sent11Value,
Intelligent electric energy meter processor obtains the first channel quality than Q1, the first channel average channel quality CQI1 by calculating.
Second communication channels work block diagram shown in attached drawing 3, operation principle as shown in Figure 3 are：Intelligent electric energy meter passes through second
Communication channel sends channel estimating code, and after higher level equipment receives channel estimating code, analysis detection channel quality obtains predictive code
Channel quality CQI21；Intelligent electric energy meter higher level equipment retransmits channel return code, and intelligent electric energy meter analysis detection channel quality obtains
To return code channel quality CQI122；Higher level equipment contains CQI in channel return code is sent21Value, at intelligent electric energy meter
Device is managed by calculating, obtains second channel channel quality than Q2, second channel average channel quality CQI2.
4 intelligent electric energy meter channel selection flow chart of attached drawing
Q1, Q2, CQI1, the value of CQI2 can be obtained according to attached drawing 2 and 3 flow intelligent electric energy meter processor of attached drawing.
Communication channel selection is according to the first channel average channel quality CQI1, with second channel average channel quality value
CQI2 compares the suitable channel of selection
CQI1 is compared with CQI2, if CQI1>CQI2 selects the first channel；
CQI1 is compared with CQI2, if CQI1=CQI2, carries out Q1 Q1 compared with Q2<Q2＆＆ | Q1-1 |=！| Q2-1 | choosing
The first channel；
CQI1 is compared with CQI2, if CQI1=CQI2, carries out Q1 Q1 compared with Q2>=Q2＆＆ | Q1-1 |=！|Q2-1|
The second channel of choosing；
CQI1 is compared with CQI2, if CQI1<CQI2 selects second channel.
Intelligent electric energy meter duplex interactive system as shown in Figure 5：
Intelligent electric energy meter duplex interactive system mainly includes：It is intelligent electric energy meter, communication channel, smart-interactive terminal, two-way
Interactive service platform.
Two-way interaction service platform mainly includes intelligent appliance control, secure accessing service, user management etc..User passes through
Either Pad can also pass through NFC WIFI channel qualities to mobile phone by means of public network and the progress interaction of two-way interaction service platform
Test, selection and the periodicity of channel quality is tested, stable channel is selected to carry out ammeter data with intelligent electric energy meter
Interaction, interactive project mainly include the current table code of electric energy meter, instantaneous voltage, instantaneous power, daily power consumption, residual amount etc..
Although the foregoing describe the specific embodiment of invention, it will be appreciated by those of skill in the art that these have
Body embodiment is merely illustrative of, and those skilled in the art, can be in the case where not departing from the principle and substance of the present invention
Various omissions, substitutions and changes are carried out to the details of the above method and system.Such as merge above method step, so as to according to reality
The identical method of matter performs substantive same function to realize that substantially identical result then belongs to the scope of the present invention.Therefore this hair
Bright range is only limited by the claims that follow.
Claims (4)
1. a kind of communication module of intelligent electric energy meter dual mode communication channel division method, it is characterized in that, include the following steps：
(1) the first channel is detected, second channel obtains the channel quality ratio and average channel quality of each channel；
(2) the channel quality ratio of comprehensive first channel and second channel selects channel with average channel quality；
(3) encrypted transmission data, transmission data；
(4) periodic channel quality is tested, and switches more reliable channel in time；
In step (1),
1) intelligent electric energy meter dual mode communication module sends channel quality prediction code, higher level to each channel first in reported data
Equipment receives the channel quality prediction code, detects the first channel estimating code channel quality CQI11, second channel predictive code letter
Road quality CQI21；
2) and then higher level equipment sends channel quality return code to intelligent electric energy meter, detects the first channel return code channel quality
CQI12, second channel return code channel quality CQI22；
3) channel quality when each channel of COMPREHENSIVE CALCULATING is received with sending calculates the first channel channel quality than Q1, the first letter
Road average channel quality CQI1 and second channel channel quality ratio Q2, second channel average channel quality CQI2.
2. communication module of intelligent electric energy meter dual mode communication channel division method according to claim 1, it is characterized in that, step
(2) in,
CQI1 is compared with CQI2, if CQI1>CQI2 selects the first channel；
CQI1 is compared with CQI2, if CQI1=CQI2, Q1 is carried out compared with Q2, if Q1<Q2＆＆ (| Q1-1 |=！|Q2-1
|), the first channel of choosing；
CQI1 is compared with CQI2, if CQI1=CQI2, carries out Q1 compared with Q2, Q1>=Q2＆＆ (| Q1-1 |=！| Q2-1 |),
The second channel of choosing；
CQI1 is compared with CQI2, if CQI1<CQI2 selects second channel.
3. communication module of intelligent electric energy meter dual mode communication channel division method according to claim 2, it is characterized in that, step
(3) it in, after channel selection, is sent after channel transmission data is encrypted.
4. communication module of intelligent electric energy meter dual mode communication channel division method according to claim 1, it is characterized in that, first
Channel channel quality is more flat than Q1, the first channel average channel quality CQI1 and second channel channel quality ratio Q2, second channel letter
The calculating formula of equal channel quality CQI2 is as follows：
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106898129A (en) * | 2017-01-13 | 2017-06-27 | 成都中科慧源科技有限公司 | The radio communication gas meter, flow meter and its application method of a kind of many communication channels |
| CN109215315A (en) * | 2018-08-31 | 2019-01-15 | 杭州海兴电力科技股份有限公司 | The remote meter reading method and system of dual mode communication |
| CN112837522A (en) * | 2019-11-25 | 2021-05-25 | 广东电网有限责任公司广州供电局 | Carrier communication device of intelligent electric meter and intelligent electric meter equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102244564A (en) * | 2010-05-11 | 2011-11-16 | 中兴通讯股份有限公司 | Downlink transmission method and base station of MIMO (Multiple Input Multiple Output) system |
| CN103138801A (en) * | 2013-03-19 | 2013-06-05 | 湖北省电力公司 | Device and method for automatic switching of narrow-band power line carrier and micro-power wireless binary channel |
| CN103400492A (en) * | 2013-06-24 | 2013-11-20 | 深圳市国电科技通信有限公司 | Dual-mode communication chip integrating power line and wireless communication and acquisition equipment |
-
2015
- 2015-09-09 CN CN201510571115.0A patent/CN105282808B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102244564A (en) * | 2010-05-11 | 2011-11-16 | 中兴通讯股份有限公司 | Downlink transmission method and base station of MIMO (Multiple Input Multiple Output) system |
| CN103138801A (en) * | 2013-03-19 | 2013-06-05 | 湖北省电力公司 | Device and method for automatic switching of narrow-band power line carrier and micro-power wireless binary channel |
| CN103400492A (en) * | 2013-06-24 | 2013-11-20 | 深圳市国电科技通信有限公司 | Dual-mode communication chip integrating power line and wireless communication and acquisition equipment |
Non-Patent Citations (2)
| Title |
|---|
| LTE/LTE-A系统的CQI自适应反馈方法;陈熙;《西南交通大学学报》;西南交通大学;20120531;第47卷;正文第315页第2栏10-22行 * |
| 一种面向用电信息采集系统的WSNs多信道MAC协议;李悦;《传感器与微系统》;中国电子科技集团公司第四十九研究所;20141020;第33卷(第10期);正文第144-147页 * |
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