CN108880619A - A kind of automatic meter reading method using bandwidth carrier communication module - Google Patents
A kind of automatic meter reading method using bandwidth carrier communication module Download PDFInfo
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- CN108880619A CN108880619A CN201810834938.1A CN201810834938A CN108880619A CN 108880619 A CN108880619 A CN 108880619A CN 201810834938 A CN201810834938 A CN 201810834938A CN 108880619 A CN108880619 A CN 108880619A
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- concentrator
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- bandwidth carrier
- communication module
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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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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/544—Setting up communications; Call and signalling arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5429—Applications for powerline communications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/60—Arrangements in telecontrol or telemetry systems for transmitting utility meters data, i.e. transmission of data from the reader of the utility meter
Abstract
The invention discloses a kind of automatic meter reading methods using bandwidth carrier module, the bandwidth carrier automatic network-building on the order starting concentrator and intelligent electric energy meter of module is copied according to concentrator master, after the completion of networking, start meter reading, when the individual station datas of concentrator copy reading, routing meter reading may be selected, according to destination address routed path, carry out routing meter reading, when concentrator needs the data of multiple websites, start concurrent meter reading at this time and carries out concurrent meter reading, the bandwidth carrier module that the method uses is mounted on intelligent electric energy meter, liaison is realized with the bandwidth carrier communication module on concentrator, use this bandwidth carrier module, power line networking may be implemented, full dynamic routing, safety, high reliablity, traffic rate is high, data that can with security and stability in copy reading electric energy meter.
Description
Technical field
The invention belongs to Automatic meter reading fields, are related to a kind of automatic data logging side using bandwidth carrier communication module
Method.
Background technique
As industrial automation constantly develops, traditional artificial regular meter reading is time-consuming, arduously, has been unable to meet current state
The needs of family's power grid construction.Automatic coppying meter can save manpower, improve working efficiency, realize maximization of economic benefit.Institute at present
The automatic coppying meter of use mainly includes wireless public network GPRS meter reading, power line carrier meter reading, micropower wireless self-networking meter reading
Deng.Power line carrier meter reading ad hoc network uses power wire broadband carrier communication technology, and electric energy meter and collector, concentrator are formed
One meter reading network.In use, concentrator master, which copies module, carries out networking by sending networking beacon, built simultaneously during networking
Vertical node route list, then concentrator master copies module according to routing table copy reading terminal module data.But in practical applications, for
For data communication, channel is undesirable, is a highly unstable transmission channel, this is embodied in noise significantly and believes
Number decaying is serious, some node-routings is made to fail or can not be communicated with the node by routed path.In such cases, make
It is failure with routing meter reading.
Summary of the invention
In order to solve the above-mentioned technical problem the present invention, provides a kind of automatic data logging side using bandwidth carrier communication module
Method, data that can with security and stability in copy reading electric energy meter, safety, reliability, traffic rate are relatively high.
The present invention is to be achieved through the following technical solutions：
A kind of automatic meter reading method using bandwidth carrier communication module, includes the following steps：
1) the bandwidth carrier communication module on the order starting concentrator and intelligent electric energy meter of module is copied according to concentrator master
Networking is mutually carried out, concentrator starts meter reading order after the completion of networking；
2) when concentrator needs the data of multiple websites, at this point, concurrent meter reading is enabled, the bandwidth carrier communication of concentrator
Module constructs the data acquisition of all nodes in a network, meter reading down order frame, the application layer data that concentrator is transmitted
Claim frame is encapsulated in command frame, and then the bandwidth carrier communication module of concentrator issues under data acquisition in the form broadcasted
Line command frame, network host node are required according to concentrator, are initiated tidal data recovering and are started broadcasting command, bandwidth carrier communication module is received
To start command node according to start command specified data request electric energy meter corresponding data, and data organization is encapsulated
Frame is reported for data, node will select a good opportunity and be sent to network host node；Network host node will confirm the valid data reported,
The node for receiving confirmation will be considered to the data that this is reported and report completion；For cannot successfully be reported within specified task time
Node, network host node by initiate data benefit copy, i.e., routing the none obtained data of active copy reading；So that number of concurrent keeps maximum
Number, until all ammeter copy readings are completed, after the completion of meter reading, router CCO will be sent out copy reading result by concurrent uplink frame
Give concentrator.
The process that bandwidth carrier communication module on concentrator and intelligent electric energy meter mutually carries out networking is：TDMA networking is pre-
Processing；Send networking beacon frame, then whether detection network address conflicts according to the order starting networking that concentrator master copies module；
The processing of network address conflict；Terminal module parameter configuration；Nodal information configures and establishes node route list to complete networking.
Concurrently the interaction flow of meter reading is：
Concentrator sends pause routing command to router CCO, so that CCO is exited aggressive mode, and controlled automatically by concentrator
Make concurrent meter reading interaction flow；Detailed process is as follows：
1) concentrator continuously transmits multiple concurrent amr frames to CCO, allows number when the amr frame of transmission reaches concurrent frame
Afterwards, CCO control pause sends amr frame to CCO, when concentrator receives any one meter reading response message of CCO, it is possible to
It is successfully or when failure, concentrator should reissue a frame message to CCO again, so that number of concurrent keeps maximum number, until all electricity
Until table copy reading is completed；
2) after the completion of meter reading, copy reading result will be sent to concentrator by concurrent uplink frame by CCO.
Concurrently the interaction flow of meter reading is specially：1) the concurrent number of the meter reading message issued when concentrator permits more than CCO
When maximum value perhaps, error reason is busy for 9 host nodes, and after receiving that host node is busy and replying, pause sends amr frame to CCO；Each
A plurality of 645 message can be carried in concurrent meter reading frame, concurrent 645 message number of meter reading frame of single is no more than 16；More than 16 times
Multiple 110, i.e., 645 numbers are more than maximum value；When concentrator meter reading, if the message sent is more than the bearing capacity of power line, and
Hair number reaches maximum, is routed back to wrong 109 concurrent numbers and reaches maximum；
2) after the completion of meter reading, copy reading result will be sent to concentrator by concurrent uplink frame by CCO；
It is 645 or 698 messages of return in message if meter reading success；
If meter reading fails, the empty message that length is 0 is returned.
In data transmission procedure, power wire broadband carrier communication module is by the interference shape of the lasting each subchannel of detection
Condition, if it find that have the electromagnetic interference in the interference generation or certain subchannels of burst very serious, power wire broadband carrier
Communication module can be adjusted intelligently, that is, transmission in other glitch-free subchannels is transferred to, to avoid having on power line
There is the frequency range of interference source.
It is further comprising the steps of before step 2)：3) it when concentrator copy reading a small amount of station data individually, can choose
Active meter reading method is routed, finds the routed path of the destination address of needs, concentrator master copies module according to routed path to copy
It reads the data of user's intelligent electric energy meter and feeds back to concentrator, that is, carry out routing meter reading.
Compared with prior art, the invention has the following beneficial technical effects：
Automatic meter reading method provided by the invention using bandwidth carrier communication module, the bandwidth carrier that the method uses are logical
Letter module is mounted on intelligent electric energy meter, is realized liaison with the bandwidth carrier communication module of concentrator, is carried out electric energy meter
The Special electric line of force communication equipment of multiple parameters automatic transcription.Mainly as the data transmission between concentrator and intelligent electric energy meter
Channel.Using this bandwidth carrier communication module, automatic network-building may be implemented, traffic rate is high, can be complete in a very short period of time
It is transmitted at data, the influence by bursty interference can be substantially reduced, even if a communication failure, can also be retransmitted rapidly, really
It is reliable to protect data.
By using such module, in the case where routing meter reading failure, tidal data recovering starting broadcasting command can be carried out
Meter reading.The problem of can not communicating between node is efficiently solved, safety, reliable, traffic rate height.Meter reading is greatly improved
Success rate.Maintenance rate is reduced, cost is saved.
Detailed description of the invention
Fig. 1 is the flow diagram of the automatic meter reading method provided by the invention using bandwidth carrier communication module；
Fig. 2 is the meter reading flow diagram of the automatic meter reading method provided by the invention using bandwidth carrier communication module；
Fig. 3 is that the bandwidth carrier in the automatic meter reading method provided by the invention using bandwidth carrier communication module communicates mould
Block panel schematic diagram.
Specific embodiment
Below with reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
Referring to Fig. 1 to Fig. 3, a kind of automatic meter reading method using bandwidth carrier communication module includes the following steps：
1) the bandwidth carrier communication module on the order starting concentrator and intelligent electric energy meter of module is copied according to concentrator master
Automatic network-building, concentrator starting routing active meter reading order after the completion of networking.
2) when concentrator copy reading a small amount of station data individually, it can choose routing active meter reading method, find needs
The routed path of destination address, concentrator master copy module according to routed path come the data and feedback of copy reading user's intelligent electric energy meter
To concentrator, that is, carry out routing meter reading.
3) when concentrator needs the data of multiple websites, at this point, concurrent meter reading is enabled, the bandwidth carrier communication of concentrator
Module constructs the data acquisition of all nodes in a network, meter reading down order frame, the application layer data that concentrator is transmitted
Claim frame is encapsulated in command frame, and then the bandwidth carrier communication module of concentrator issues under data acquisition in the form broadcasted
Line command frame；Network host node is required according to concentrator, is initiated tidal data recovering and is started broadcasting command, bandwidth carrier communication module is received
To start command node according to start command specified data request electric energy meter corresponding data, and data organization is encapsulated
Frame is reported for data, node will select a good opportunity and be sent to network host node；Network host node will confirm the valid data reported,
The node for receiving confirmation will be considered to the data that this is reported and report completion.For cannot successfully be reported within specified task time
Node, network host node by initiate data benefit copy, i.e., routing the none obtained data of active copy reading.
Common website can be read out the data of requirement for every table of local management, can also be according to specified every number
According to requiring, the meter of local management is read one by one；Since application reply data are longer, so that a reported data frame cannot be whole
All data are reported, website can report several times, report " uploading serial number " to identify difference every time.
Each tidal data recovering meter reading task is identified by task number, and during entirely collecting task, task number is kept
Constant, task number is indicated by " test serial number " of meter reading.
In collecting task, CCO node will be " true according to reporting " test serial number " of message, " uploading serial number " to be issued
Recognize/deny " message.
Bandwidth carrier communication module in the present invention is modular cartridge, indicator light lamppost and solid with four screws by PCBA
Surely it forms.In use, this bandwidth carrier communication module is mounted on to the designated position of electric energy meter, this bandwidth carrier as shown in Figure 3
Communication module panel schematic diagram.
This bandwidth carrier communication module is mounted on intelligent electric energy meter, communicates mould with the bandwidth carrier installed on concentrator
Block realizes liaison, carries out the Special low-voltage power line communications apparatus of electric energy meter multiple parameters automatic transcription.Mainly as collection
Data transmission channel between middle device and intelligent electric energy meter.Using this bandwidth carrier communication module, automatic network-building may be implemented, entirely
Dynamic routing, safety, high reliablity, traffic rate are high, data that can with security and stability in copy reading electric energy meter.
It should be noted that in transmission process, power wire broadband carrier equipment is by the lasting each subchannel of detection
Disturbance regime.If it find that have the electromagnetic interference in interference (such as harmonic wave) generation or certain subchannels of burst very serious,
Power wire broadband carrier equipment can be adjusted intelligently, that is, transmission in other glitch-free subchannels is transferred to, to avoid
With the frequency range of interference source on power line.
Specifically, low-voltage power line networking may be implemented using such bandwidth carrier communication module, for logical in power grid
Letter.Concentrator is the core of kilowatt meter reading-out system, has uplink and downlink channel, and data feedback channel is communicated between main website, under
Row of channels acquires the data of electric energy meter, the use of this bandwidth carrier communication module for copying product applied to electric energy meter and collection is application
In the acquisition of the electric energy meter data of concentrator down going channel, by concentrator, collector, power meter group at a kilowatt meter reading-out system, root
Dynamic auto networking, the data of copy reading electric energy meter are carried out according to the networking beacon that concentrator master copies module.
Start bandwidth carrier automatic network-building according to the order that concentrator master copies module, after the completion of networking, starts meter reading, work as collection
Middle device copy reading individually a small amount of station data when, start the data of router meter reading copy reading electric energy meter, when concentrator needs multiple stations
When the data of point, concentrator exits routing meter reading mode, and concentrator continuously issues concurrent meter reading order to multiple websites, Duo Gezhan
The data for returning to respective meter reading after receiving order to concentrator are put, concurrent meter reading success rate is high, and data are accurate, and traffic rate is more
It is high.
Bandwidth carrier automatic network-building includes：TDMA networking pretreatment；Start networking according to the order that concentrator master copies module
Send networking beacon frame；The detection whether network address conflicts；The processing of network address conflict；The configuration of terminal module parameter；
Nodal information configures and establishes node route list etc..It is detailed in Fig. 1.
After the completion of networking, concentrator issues meter reading order, routes active meter reading, and concentrator master copies module according to routing table
The data of active copy reading user's intelligent electric energy meter simultaneously feed back to concentrator, that is, carry out routing meter reading.It is slow to route meter reading rate, works as collection
When middle device needs the data of multiple websites, concurrent meter-reading function can be enabled at this time, and concurrent meter reading traffic rate is high, is detailed in Fig. 1.
Alternatively, concentrator issues meter reading order after the completion of networking, route sending-down data summarization task collects task knot
Shu Hou, master copy module according to the data of routing table active copy reading user's intelligent electric energy meter and feed back to concentrator, that is, routed
Meter reading.When concentrator needs the data of multiple websites, routing meter reading rate is slower, starts concurrent meter reading at this time, it is possible to provide logical
Believe rate.
Concurrent meter reading interaction flow
Concentrator sends pause routing command to router CCO, so that CCO is exited aggressive mode, and controlled automatically by concentrator
Make concurrent meter reading interaction flow.Detailed process is as follows：
1) concentrator continuously transmits multiple concurrent amr frames to CCO, after reaching concurrent frame allows number (CCO control),
Pause sends amr frame to CCO.When concentrator receives any one meter reading response message of CCO, it is possible to be successfully or
When failure, concentrator should reissue a frame message to CCO again, so that number of concurrent keeps maximum number, until all ammeter copy readings are completed
Until.Following situations should be noted：
The concurrent number for the meter reading message that concentrator issues is more than the maximum value that CCO allows, and error reason is 9 host nodes
It is busy.After receiving the busy reply of host node, pause sends amr frame to CCO；A plurality of 645 report can be carried in each concurrent meter reading frame
Text, concurrent 645 message number of meter reading frame of single is no more than 16；110 are replied more than 16 indicates that 645 numbers are more than maximum value；Collection
When middle device meter reading, if the message sent is more than the bearing capacity of power line, i.e., concurrent number reaches maximum, is routed back to mistake
109, i.e., concurrent number reaches maximum.
When concentrator meter reading, does not allow and issue a plurality of meter reading message of same ammeter, do not allow and issue same to adopt
It is to wait until returning for first meter reading message that a plurality of meter reading message of storage, i.e. concentrator, which issue the premise of Article 2 meter reading message,
It is multiple.Otherwise, return is denied that frame, error reason 111 indicate the table just in copy reading by CCO.
2) after the completion of meter reading, copy reading result will be sent to concentrator by concurrent uplink frame by CCO.
It is 645 or 698 messages of return in message if meter reading success.
If meter reading fails, the empty message that length is 0 is returned.Referring to fig. 2.
More than, using the automatic meter reading method of bandwidth carrier communication module, it is used in automatic coppying meter system,
Safe and reliable by using such module meter reading, stability is good, is not influenced, is effectively improved by the variation of environment
Meter reading success rate reduces maintenance rate, saves cost.
Automatic meter reading method provided by the invention using bandwidth carrier communication module, the life of module is copied according to concentrator master
Enable starting bandwidth carrier communication module automatic network-building, after the completion of networking, start meter reading, when concentrator copy reading a small amount of website number individually
According to when, according to destination address routed path, the data of starting routing active meter reading copy reading electric energy meter, when concentrator needs copy reading more
When the data of a website, concurrent meter reading method can be started, the bandwidth carrier communication module that the method uses is mounted in intelligent electricity
On energy table, liaison is realized with concentrator bandwidth carrier communication module, carries out the private communication that electric energy meter multiple parameters are copied and accepted
Equipment.Mainly as the data transmission channel between concentrator and intelligent electric energy meter.It, can be with using this bandwidth carrier communication module
Realize power line networking, full dynamic routing, safety, high reliablity, meter reading rate is high, can be with security and stability in copy reading electric energy meter
Data.
Automatic meter reading method provided by the invention using bandwidth carrier communication module, the bandwidth carrier that the method uses are logical
Letter module is mounted on intelligent electric energy meter, is realized liaison with the bandwidth carrier communication module of concentrator, is carried out electric energy meter
The Special electric line of force communication equipment of multiple parameters automatic transcription.Mainly as the data transmission between concentrator and intelligent electric energy meter
Channel.Using this bandwidth carrier communication module, automatic network-building may be implemented, traffic rate is high, can be complete in a very short period of time
It is transmitted at data, the influence by bursty interference can be substantially reduced, even if a communication failure, can also be retransmitted rapidly, really
It is reliable to protect data.
By using such module, in the case where routing meter reading is relatively slow, tidal data recovering starting broadcasting command can be carried out
Meter reading.The problem of can not communicating between node is efficiently solved, safety, reliably.The success rate of meter reading is greatly improved.It reduces
Maintenance rate, saves cost.
This utilizes the automatic meter reading method of bandwidth carrier communication module, number that can with security and stability in copy reading electric energy meter
According to safety, reliability, traffic rate are relatively high.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (6)
1. a kind of automatic meter reading method using bandwidth carrier communication module, which is characterized in that include the following steps：
1) the bandwidth carrier communication module started on concentrator and intelligent electric energy meter according to the order that concentrator master copies module is mutual
Networking is carried out, concentrator starts meter reading order after the completion of networking；
2) when concentrator needs the data of multiple websites, at this point, concurrent meter reading is enabled, the bandwidth carrier communication module of concentrator
The data acquisition of all nodes in a network, meter reading down order frame are constructed, the application layer data that concentrator is transmitted is requested
Frame is encapsulated in command frame, and then the bandwidth carrier communication module of concentrator issues the downlink life of data acquisition in the form broadcasted
Frame is enabled, network host node is required according to concentrator, is initiated tidal data recovering and is started broadcasting command, bandwidth carrier communication module, which receives, to be opened
Data organization is encapsulated as counting by the node of dynamic order according to start command specified data request electric energy meter corresponding data
According to frame is reported, node will select a good opportunity and be sent to network host node；Network host node will confirm the valid data reported, receive
The node of confirmation will be considered to the data that this is reported and report completion；For the section that cannot be successfully reported within specified task time
Point, network host node will be initiated data benefit and copied, i.e. the routing none obtained data of active copy reading；So that number of concurrent keeps maximum number,
Until all ammeter copy readings are completed, after the completion of meter reading, copy reading result will be sent to by router CCO by concurrent uplink frame
Concentrator.
2. the automatic meter reading method according to claim 1 using bandwidth carrier communication module, which is characterized in that concentrator
The process that networking is mutually carried out with the bandwidth carrier communication module on intelligent electric energy meter is：TDMA networking pretreatment；According to concentration
The order starting networking that device master copies module sends networking beacon frame, then whether detection network address conflicts；Network address conflict
Processing；Terminal module parameter configuration；Nodal information configures and establishes node route list to complete networking.
3. the automatic meter reading method according to claim 1 using bandwidth carrier communication module, which is characterized in that concurrently copy
The interaction flow of table is：
Concentrator sends pause routing command to router CCO, so that CCO is exited aggressive mode, and automatically controlled simultaneously by concentrator
Send out meter reading interaction flow；Detailed process is as follows：
1) concentrator continuously transmits multiple concurrent amr frames to CCO, after the amr frame of transmission, which reaches concurrent frame, allows number,
CCO control pause sends amr frame to CCO, when concentrator receives any one meter reading response message of CCO, it is possible to be into
When function or failure, concentrator should reissue a frame message to CCO, so that number of concurrent keeps maximum number, until all ammeters are copied again
Until running through；
2) after the completion of meter reading, copy reading result will be sent to concentrator by concurrent uplink frame by CCO.
4. the automatic meter reading method according to claim 3 using bandwidth carrier communication module, which is characterized in that concurrently copy
The interaction flow of table is specially：1) wrong when the concurrent number for the meter reading message that concentrator issues is more than the maximum value that CCO allows
Accidentally reason is busy for 9 host nodes, and after receiving the busy reply of host node, pause sends amr frame to CCO；It can be in each concurrent meter reading frame
A plurality of 645 message is carried, concurrent 645 message number of meter reading frame of single is no more than 16；110 are replied more than 16, i.e., 645 numbers are super
Cross maximum value；When concentrator meter reading, if the message sent is more than the bearing capacity of power line, concurrent number reaches maximum, road
Reach maximum by returning to wrong 109 concurrent numbers；
2) after the completion of meter reading, copy reading result will be sent to concentrator by concurrent uplink frame by CCO；
It is 645 or 698 messages of return in message if meter reading success；
If meter reading fails, the empty message that length is 0 is returned.
5. the automatic meter reading method according to claim 1 using bandwidth carrier communication module, which is characterized in that in data
In transmission process, power wire broadband carrier communication module is by the disturbance regime of the lasting each subchannel of detection, if it find that having
Electromagnetic interference in the interference generation of burst or certain subchannels is very serious, and power wire broadband carrier communication module can be with intelligence
It adjusts to energy, that is, is transferred to transmission in other glitch-free subchannels, to avoid the frequency on power line with interference source
Range.
6. the automatic meter reading method according to claim 1 using bandwidth carrier communication module, which is characterized in that in step
2) further comprising the steps of before：
3) when concentrator copy reading a small amount of station data individually, it can choose routing active meter reading method, find destination address
Routed path, concentrator master copy module and come the data of copy reading user's intelligent electric energy meter and feed back to concentrator according to routed path,
Carry out routing meter reading.
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| CN109769016A (en) * | 2018-12-26 | 2019-05-17 | 重庆世纪之光科技实业有限公司 | A kind of the Multi-task Concurrency meter register method and device, system of intelligent meter data recording system |
| CN110047268A (en) * | 2019-04-25 | 2019-07-23 | 宁波三星医疗电气股份有限公司 | Meter register method and device |
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| CN114374892A (en) * | 2022-01-04 | 2022-04-19 | 烽火通信科技股份有限公司 | Meter reading method and meter reading system based on HPLC |
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| CN113015229A (en) * | 2020-12-29 | 2021-06-22 | 国家电网有限公司 | Networking method of dual-mode integrated ad hoc network based on power line carrier and wireless |
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| CN113490071A (en) * | 2021-06-11 | 2021-10-08 | 长沙润欣信息技术有限公司 | Minute-level high-frequency data acquisition method based on HPLC communication |
| CN113595778A (en) * | 2021-07-23 | 2021-11-02 | 宁波三星医疗电气股份有限公司 | Module terminal meter reading service abnormity self-recovery processing method |
| CN113595778B (en) * | 2021-07-23 | 2023-08-01 | 宁波三星医疗电气股份有限公司 | Method for processing abnormal self-recovery of meter reading business of module terminal |
| CN113595591A (en) * | 2021-07-29 | 2021-11-02 | 宁波三星医疗电气股份有限公司 | Self-recovery processing method for abnormal module terminal file parameter synchronization service |
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| CN113630155A (en) * | 2021-08-06 | 2021-11-09 | 国网四川省电力公司营销服务中心 | HPLC-based synchronous acquisition method for instantaneous analog quantity of district electric energy meter |
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