CN115188176B - Fusion communication method between intelligent ammeter and concentrator based on dual-mode communication - Google Patents
Fusion communication method between intelligent ammeter and concentrator based on dual-mode communication Download PDFInfo
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H—ELECTRICITY
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- G—PHYSICS
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- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C2201/00—Transmission systems of control signals via wireless link
- G08C2201/60—Security, fault tolerance
- G08C2201/63—Redundant transmissions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/40—Arrangements in telecontrol or telemetry systems using a wireless architecture
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- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/50—Arrangements in telecontrol or telemetry systems using a mobile data collecting device, e.g. walk by or drive by
Abstract
The invention belongs to the field of power equipment, and particularly relates to a fusion communication method between a smart electric meter and a concentrator based on dual-mode communication. The communication method is used for realizing the bidirectional transmission of data and instructions between the intelligent ammeter and the concentrator, thereby realizing the remote meter reading function. The communication method mainly comprises four stages of establishing a converged communication network, generating a data transmission link, requesting meter reading data, and maintaining data reliability. The converged communication network comprises two paths of HPLC communication and HRF communication. In the data transmission link generation stage, the system automatically performs network topology analysis so as to allocate the optimal communication path. And the data verification is also carried out on the transcription data which are received and transmitted in different paths, so that the accuracy of the meter reading data is improved. In addition, the invention can also acquire the position coordinates of the equipment in time when any equipment fault occurs, thereby being convenient for operation and maintenance processing. The method solves the problem of insufficient reliability of the conventional meter reading data transmission method of the intelligent electric meter.
Description
Technical Field
The invention belongs to the field of power equipment, and particularly relates to a fusion communication method between a smart electric meter and a concentrator based on dual-mode communication.
Background
The novel intelligent ammeter has realized the complete replacement to traditional mechanical ammeter, has all built-in communication module in the intelligent ammeter generally, can realize the communication with meter reading data such as concentrator, and then realizes the remote acquisition of electric power data and the remote transmission of instruction, has laid the foundation for the realization of electric power system automation.
Most of the existing intelligent electric meters and concentrators adopt an HPLC communication mode for data transmission, and the HPLC communication can utilize the existing power line for data transmission, so that the cost of re-laying signal cables is reduced. But the single HPLC communication channel has strong attenuation, high channel time variability, more interference noise, low communication rate and low reading success rate, and the communication effect is difficult to reach the application requirement.
The wireless radio frequency technology is an emerging technology capable of realizing data transmission without signals, and can supplement wired communication modes such as carrier communication, ethernet and the like; eliminating the influence of the interruption of the data transmission line on the communication quality. It is therefore possible to solve the drawbacks of existing HPLC communication in electrical systems if both communication technologies can be combined. However, the wireless and wired converged communication technology still has a plurality of technical difficulties and relatively high cost, and an effective technical scheme for combining the wireless and wired converged communication technology with the conventional power equipment is not available.
Disclosure of Invention
In order to solve the problem that the reliability of the data transmission technology based on HPLC between the existing intelligent ammeter and the concentrator is insufficient, and the data reading success rate is easily affected by interference signals, the invention provides a fusion communication method between the intelligent ammeter and the concentrator based on dual-mode communication.
The invention is realized by adopting the following technical scheme:
a fusion communication method between a smart electric meter and a concentrator based on dual-mode communication; the communication method is used for realizing the bidirectional transmission of data and instructions between the intelligent ammeter and the concentrator, thereby realizing the remote meter reading function. The communication method mainly comprises four stages of establishing a converged communication network, generating a data transmission link, requesting meter reading data, maintaining data reliability, and the working process of each stage is as follows:
1. establishing a converged communication network:
carrier communication units are respectively installed in a concentrator in a station area and all intelligent electric meters, and then a bus type topological structure based on HPLC is established between the concentrator in the station area and the intelligent electric meters, and in a communication system of the established bus type topological structure, each intelligent electric meter is directly in communication connection with the concentrator by utilizing a power line.
And installing high-speed wireless communication units in all power equipment which comprises a concentrator and a smart meter and needs to carry out data transmission in the platform region, carrying out MESH networking by all power equipment which is provided with the high-speed wireless communication units in the platform region, and further establishing a MESH topological structure based on HRF between the concentrator and the smart meter in the platform region. In an established HRF-based mesh topology communication system, each smart meter communicates directly with a concentrator or indirectly with at least one other power device as a relay node.
Finally, all communication links for data transmission between all power devices can be generated based on the bus topology structure and the mesh topology structure in the constructed dual-mode converged communication network. The communication link between each smart meter and the concentrator that enables data transfer includes both links along the HPLC communication network and links along the HRF communication network.
2. Generating a data transmission link:
the concentrator periodically sends heartbeat messages for checking network connection states to all intelligent electric meters in the station area through a dual-mode communication module comprising a carrier communication unit and a high-speed wireless communication unit according to preset detection frequency.
The intelligent ammeter analyzes and responds to the received heartbeat message, and then returns a return message for representing the communication connection state of the intelligent ammeter to the concentrator.
The concentrator updates the communication connection state of the network node corresponding to each intelligent electric meter according to the received return message of each electric device, and generates all to-be-selected communication links of data transmission between each intelligent electric meter and the concentrator, wherein each to-be-selected communication link comprises an HPLC link and at least one HRF link.
3. Meter reading data request
The concentrator firstly generates corresponding meter reading instructions in each meter reading period according to the established meter reading task. And then taking the communication link with the best communication quality and the least relay node in the HRF links as the best HRF link, and taking at least one communication link of the HPLC link and the best HRF link as a target communication link. And then each intelligent ammeter transmits a corresponding meter reading request instruction through a target communication link. Each intelligent ammeter analyzes and responds to the received meter reading request instruction, and then transmits the requested meter reading data to the concentrator through the target communication link.
4. Data reliability maintenance
When the target communication link comprises two communication links, the concentrator synchronously collects corresponding meter reading data through the two communication links. And then comparing the analyzed two paths of meter reading data, and judging whether the two paths of meter reading data are consistent with each other or not: (1) And when the two are consistent, storing meter reading data at the current moment. (2) And when the two messages are not matched, sending out heartbeat messages to each intelligent ammeter again, and updating the communication links among the station area equipment according to the received return messages. And then, sending a meter reading request instruction to the corresponding intelligent electric meter again through the updated target communication link, and executing the meter reading data complement.
When only one communication link is included in the target communication link, the concentrator directly stores the collected meter reading data at the current moment. And then, sending a device maintenance request representing the communication fault state to the platform area control center, wherein the device maintenance request comprises the communication fault type, the device identification number, the MAC address and the position coordinate of the corresponding intelligent ammeter.
As a further improvement of the invention, the heartbeat message and the return message both contain preset check codes, and the message receiver verifies the check codes after analyzing the message and only responds to the verified message content.
As a further improvement of the invention, a positioning module is also arranged in each intelligent ammeter in the platform area; the heartbeat message sent by the concentrator also comprises a position request instruction, and the intelligent ammeter adds the real-time position coordinates acquired by the positioning module into the sent return message when responding to the heartbeat message.
As a further improvement of the invention, the positioning module adopts a positioning module based on a Beidou system or a GPS system or a dual-mode positioning module based on Beidou and GPS. And the positioning module is connected with the MCU of the intelligent ammeter by adopting a UART interface, so that data interaction is realized.
As a further improvement of the invention, when the station control center receives the equipment maintenance request, the fault type is analyzed first, then a corresponding solution is generated, and the solution is sent to the technician. And a technician handles communication faults of the intelligent ammeter according to a solution generated by the platform area control center, so that normal communication can be realized by an HPLC link and an HRF link between the intelligent ammeter and the concentrator. And when the solution corresponding to the communication fault needs to be carried out by a technician to the equipment site for field processing, the station area control center also simultaneously sends the real-time position coordinates of the intelligent ammeter to the technician.
As a further improvement of the invention, the concentrator stores the updated position coordinates of each intelligent ammeter after each round of return message is sent. In the generation stage of the data transmission link, after communication faults occur in a carrier communication unit and a high-speed wireless communication unit in a certain intelligent electric meter, a concentrator acquires the stored latest position coordinates of the current intelligent electric meter and sends a corresponding equipment maintenance request to a platform area control center, wherein the equipment maintenance request comprises the corresponding communication fault type, equipment identification number, MAC address and position coordinates of the intelligent electric meter.
As a further improvement of the invention, when a certain intelligent ammeter has executed the complement of meter reading data in the same meter reading period and the two paths of the complement meter reading data still do not coincide, the concentrator stores the two paths of meter reading data simultaneously. And sending a data verification instruction representing that the meter reading data have errors to the platform area control center, wherein the data verification instruction comprises the collected two paths of meter reading data, the equipment identification number, the MAC address and the position coordinates of the intelligent electric meter. And then, the platform area control center is combined with the historical meter reading data of the intelligent electric meter to analyze the two paths of meter reading data at the current moment, so that data investigation is completed. Meanwhile, the station area control center performs fault detection on the equipment running state of the intelligent ammeter, and timely generates a corresponding operation and maintenance solution when the equipment has running faults.
As a further improvement of the invention, the high-speed wireless communication unit selects an HRF module adopting a win-sun communication protocol, and the HRF module supports a communication module with functions of MESH ad hoc network, self-repairing and single node off-network automatic searching of an optimal path and re-networking in a local area network.
As a further improvement of the invention, an ESAM encryption module is also arranged in the intelligent ammeter, and the ESAM encryption module is used for encrypting meter reading data sent to the concentrator; the ESAM encryption module is connected with the MCU of the intelligent ammeter through a 7816 interface, so that data interaction is realized.
As a further improvement of the invention, the dual-mode communication module is connected and interacted with the MCU of the intelligent ammeter by adopting a UART interface.
The technical scheme provided by the invention has the following beneficial effects:
the converged communication method provided by the invention constructs a new converged communication network architecture between the intelligent ammeter and the concentrator based on two different communication technologies of HPLC carrier communication and HRF wireless communication; in the meter reading pole stage of the concentrator, the data in the two different communication paths are redundant and can be compared with each other, so that the reliability of data transmission in the remote meter reading process is improved, and the accuracy of the collected meter reading data is also ensured.
The wireless communication part can be used as a relay stage for a large number of distributed power equipment in the power system to construct an ultra-stable mesh topological structure, and when a network communication link between any nodes fails, the system can also carry out automatic networking again, so that the data transmission process of other equipment in a station area is not affected, the robustness of the communication hope leader is replied and promoted, and the anti-interference capability of data transmission and the reading success rate of meter reading data in the network are improved.
The fusion communication method provided by the invention can also realize automatic fault reporting and automatic position updating in the process of uploading meter reading data. Further, when the intelligent ammeter network communication fault or metering fault occurs in the power system, timely notifying operation and maintenance personnel to process, and reducing the response time of the operation and maintenance personnel to the fault state; and the running stability of the power system is ensured.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
fig. 1 is a flow chart of steps of a fusion communication method between a smart meter and a concentrator based on dual-mode communication provided in embodiment 1 of the present invention.
Fig. 2 is a network topology diagram of an HPLC portion of a constructed dual mode communication network.
Fig. 3 is a network topology diagram of an HRF section in a constructed dual-mode communication network.
Fig. 4 is a flowchart of a topology relationship analysis process of a communication network between a smart meter and a concentrator according to embodiment 1 of the present invention.
Fig. 5 is a flowchart of a data processing and fault handling process between the smart meter and the concentrator under different communication conditions.
Fig. 6 is a schematic diagram of a module of the smart meter according to embodiment 1 of the present invention.
Fig. 7 is a system architecture diagram of the smart meter interaction software in embodiment 1 of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
The embodiment provides a fusion communication method between a smart electric meter and a concentrator based on dual-mode communication; the communication method is used for realizing the bidirectional transmission of data and instructions between the intelligent ammeter and the concentrator, thereby realizing the remote meter reading function. As shown in fig. 1, the communication method of the present embodiment mainly includes four stages of establishing a converged communication network, generating a data transmission link, requesting meter reading data, maintaining data reliability, and the working procedures of each stage are as follows:
1. establishing a converged communication network:
carrier communication units are respectively installed in a concentrator in a station area and all intelligent electric meters, and then a bus type topological structure based on HPLC is established between the concentrator in the station area and the intelligent electric meters, and in a communication system of the established bus type topological structure, each intelligent electric meter is directly in communication connection with the concentrator by utilizing a power line.
And installing high-speed wireless communication units in all power equipment which comprises a concentrator and a smart meter and needs to carry out data transmission in the platform region, carrying out MESH networking by all power equipment which is provided with the high-speed wireless communication units in the platform region, and further establishing a MESH topological structure based on HRF between the concentrator and the smart meter in the platform region. In an established HRF-based mesh topology communication system, each smart meter communicates directly with a concentrator or indirectly with at least one other power device as a relay node.
Finally, all communication links for data transmission between all power devices may be generated based on the constructed bus topology and mesh topology in the dual-mode communication network as shown in fig. 2. The communication link between each smart meter and the concentrator that enables data transfer includes both links along the HPLC communication network and links along the HRF communication network.
2. Generating a data transmission link:
specifically, the generation process of the data transmission link in this embodiment is mainly used to establish a topological relation between each electric device in the communication system in fig. 2 and 3.
The topology relation generation process mainly comprises the following steps: as shown in fig. 4, the concentrator firstly periodically sends heartbeat messages for checking network connection status to all intelligent electric meters in the station area through a dual-mode communication module including a carrier communication unit and a high-speed wireless communication unit according to a preset detection frequency. In this embodiment, the heartbeat messages are sent out synchronously in two different communication links, so as to verify connectivity of the two communication lines respectively. The intelligent ammeter analyzes and responds to the received heartbeat message, and then returns a return message for representing the communication connection state of the intelligent ammeter to the concentrator.
The concentrator updates the communication connection state of the network node corresponding to each intelligent electric meter according to the received return message of each electric device, and generates all to-be-selected communication links of data transmission between each intelligent electric meter and the concentrator, wherein each to-be-selected communication link comprises an HPLC link and at least one HRF link. In theory, the HRF link includes at least one current line with the best communication quality, and several alternative communication lines, which typically need to rely on the first or more other power devices as relay nodes for transmission. Typically, the communication link recorded in the concentrator is actually a routing table, and the smart meter returns a response message to the response based on the address of the received message.
The heartbeat messages and the return messages sent and received between the intelligent ammeter and the concentrator both contain preset check codes, and a message receiver verifies the check codes after analyzing the messages and only responds to the verified message contents. And if the received message cannot pass the verification, the message is not responded, so that the influence of the interference signal on the safety of the communication system is eliminated.
A positioning module is also arranged in each intelligent ammeter in the platform area; the purpose of the positioning module to acquire the position coordinates of the intelligent ammeter is to facilitate acquiring the actual coordinates of the power equipment when the equipment has communication faults or metering faults, and then the power equipment reaches the site of the equipment in the fastest time to carry out overhauling maintenance. In this embodiment, the location updating of the smart meter is completed in the topology analysis process of the communication system, specifically, the heartbeat message sent by the concentrator further includes a location request instruction, and when the smart meter responds to the heartbeat message, the smart meter adds the real-time location coordinate obtained by the location module to the sent return message.
3. Meter reading data request
The concentrator firstly generates corresponding meter reading instructions in each meter reading period according to the established meter reading task. And then taking the communication link with the best communication quality and the least relay node in the HRF links as the best HRF link, and taking at least one communication link of the HPLC link and the best HRF link as a target communication link. And then each intelligent ammeter transmits a corresponding meter reading request instruction through a target communication link. Each intelligent ammeter analyzes and responds to the received meter reading request instruction, and then transmits the requested meter reading data to the concentrator through the target communication link.
4. Data reliability maintenance
In this embodiment, the meter reading data transmission process between the concentrator and the smart meter includes two cases: the lines of HPLC communication and HRF communication are kept normal, and at this time, data transmission is performed through both communication lines. However, when only one of the two communication lines is kept normal, the line is selected for communication, and a maintenance request is sent to the control, so that the communication capacity of the other line is restored to be normal as soon as possible.
Specifically, as shown in fig. 5, in this embodiment, when two communication links are included in the target communication link, the concentrator synchronously collects corresponding meter reading data through the two communication links. And then comparing the analyzed two paths of meter reading data, and judging whether the two paths of meter reading data are consistent with each other or not: (1) And when the two are consistent, storing meter reading data at the current moment. (2) And when the two messages are not matched, sending out heartbeat messages to each intelligent ammeter again, and updating the communication links among the station area equipment according to the received return messages. And then, sending a meter reading request instruction to the corresponding intelligent electric meter again through the updated target communication link, and executing the meter reading data complement.
In addition, when a certain intelligent ammeter has executed the complement of meter reading data in the same meter reading period and the two complement paths of meter reading data still do not accord with each other, the concentrator stores the two paths of meter reading data simultaneously. And sending a data verification instruction representing that the meter reading data have errors to the platform area control center, wherein the data verification instruction comprises the collected two paths of meter reading data, the equipment identification number, the MAC address and the position coordinates of the intelligent electric meter. And then, the platform area control center is combined with the historical meter reading data of the intelligent electric meter to analyze the two paths of meter reading data at the current moment, so that data investigation is completed. Meanwhile, the station area control center performs fault detection on the equipment running state of the intelligent ammeter, and timely generates a corresponding operation and maintenance solution when the equipment has running faults.
When only one communication link is included in the target communication link, the concentrator directly stores the collected meter reading data at the current moment. And then, sending a device maintenance request representing the communication fault state to the platform area control center, wherein the device maintenance request comprises the communication fault type, the device identification number, the MAC address and the position coordinate of the corresponding intelligent ammeter.
When the station area control center receives the equipment maintenance request, the fault type is analyzed first, then a corresponding solution is generated, and the solution is sent to technicians. And a technician handles communication faults of the intelligent ammeter according to a solution generated by the platform area control center, so that normal communication can be realized by an HPLC link and an HRF link between the intelligent ammeter and the concentrator. And when the solution corresponding to the communication fault needs to be carried out by a technician to the equipment site for field processing, the station area control center also simultaneously sends the real-time position coordinates of the intelligent ammeter to the technician.
Particularly, in the technical scheme provided by the embodiment, the position coordinates updated after each round of return message is sent by each intelligent ammeter are stored in the concentrator. In the generation stage of the data transmission link, after communication faults occur in a carrier communication unit and a high-speed wireless communication unit in a certain intelligent electric meter, a concentrator acquires the stored latest position coordinates of the current intelligent electric meter and sends a corresponding equipment maintenance request to a platform area control center, wherein the equipment maintenance request comprises the corresponding communication fault type, equipment identification number, MAC address and position coordinates of the intelligent electric meter.
In this embodiment, the smart meter is installed at a node of each power consumer of the power system, and as shown in fig. 6, the smart meter includes a main controller MCU, a power module, a metering module, a clock circuit, a storage module, a dual-mode communication module, and a positioning module.
The main controller MCU is a data processing circuit and an instruction control unit of the intelligent ammeter and is responsible for processing each received data and sending control instructions to other modules. The metering module is used for measuring the power information of the current node. The clock circuit is used for generating clock signals required by the metering process of the metering module. The storage module is used for storing the measured power information and the position coordinates of the storage module acquired by the positioning module. The dual-mode communication module comprises a carrier communication unit and a high-speed wireless communication unit, so that the intelligent ammeter can support HPLC carrier communication and HRF wireless communication at the same time.
In this embodiment, the positioning module adopts a positioning module based on a Beidou system or a GPS system, or a dual-mode positioning module based on Beidou and GPS. And the positioning module is connected with the MCU of the intelligent ammeter by adopting a UART interface, so that data interaction is realized. The high-speed wireless communication unit selects an HRF module adopting a win-sun communication protocol, and the HRF module supports a communication module with functions of MESH ad hoc network, self-repairing and automatic searching of optimal path re-networking by single node off-network in a local area network. The MESH ad hoc network technology is mainly applied to routers and Internet of things equipment and has the characteristics of high network coverage rate, flexible structure and high reliability. The routing unit firstly automatically starts a network establishment task, performs periodic interception, collision avoidance, synchronous maintenance and self-adaptive interception. After the network is established, the route is optimized according to the established network structure. When the network is blocked and partially failed, the self-adaptive interception repairing network is automatically started. When the central node moves or changes over the entire network, the network is automatically reconstructed. The died dual-mode communication module is connected and interacted with the MCU of the intelligent ammeter by adopting a UART interface. And data transmission is performed between the storage module and the main controller MCU through SPI and I2C interfaces.
As can be seen from fig. 5, an ESAM encryption module is further installed in the smart meter according to this embodiment, and the ESAM encryption module is configured to encrypt meter reading data sent to the concentrator; the ESAM encryption module is connected with the MCU of the intelligent ammeter through a 7816 interface, so that data interaction is realized. The ESAM encryption module improves the confidentiality of data transmission between the intelligent ammeter and the concentrator, and improves the completeness of the power system.
The intelligent ammeter further comprises management software for realizing interaction, the design of the intelligent ammeter management software adopts an object-oriented design method, different types of objects are defined according to function classification, each object independently realizes all functions, coupling among the functions is reduced, expandability of the software is improved, and stability, reliability and maintainability of the software are improved.
Specifically, as shown in fig. 7, the management software is divided into three layers, namely a driving layer, a system layer and an application layer. The driving layer is used for realizing driving of each device, and specifically comprises MCU driving, IO driving, AD driving, SPI driving, 7816 driving, serial port driving, flash driving, I2C driving and the like. The system layer is used for managing each peripheral, providing normalized calling interfaces for the application layer, and managing each transaction. The system layer comprises different tasks such as clock management, equipment management, power management, interrupt management, transaction management and the like. The application layer is used for realizing various application functions of the electric energy meter such as topology analysis, communication, metering and positioning. The application layer is divided into modules according to functions, interaction data among the modules adopts a function interface mode, the use of global variables is reduced, and the coupling among the modules is reduced to the greatest extent.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. A fusion communication method between a smart electric meter and a concentrator based on dual-mode communication; the intelligent meter reading system is characterized in that the intelligent meter reading system is used for realizing bidirectional transmission of data and instructions between the intelligent meter and the concentrator, and further realizing a remote meter reading function; the communication method comprises the following steps:
1. establishing a converged communication network:
carrier communication units are respectively installed in a concentrator in a station area and all intelligent electric meters, and a bus type topological structure based on HPLC is established between the concentrator in the station area and the intelligent electric meters, so that each intelligent electric meter is in communication connection with the concentrator by utilizing a power line;
installing high-speed wireless communication units in all power equipment which comprises a concentrator and a smart meter and needs to carry out data transmission in a platform area, carrying out MESH networking by all power equipment which is provided with the high-speed wireless communication units in the platform area, and further establishing a MESH topological structure based on HRF between the concentrator and the smart meter in the platform area; each intelligent ammeter is directly communicated with the concentrator or indirectly communicated by taking at least one other power device as a relay node;
generating all communication links for data transmission among all power equipment based on the bus type topological structure and the mesh topological structure;
2. generating a data transmission link:
the concentrator periodically sends heartbeat messages for checking network connection states to all intelligent electric meters in the station area through a dual-mode communication module comprising a carrier communication unit and a high-speed wireless communication unit according to preset detection frequency;
the intelligent ammeter analyzes and responds to the received heartbeat message, and then returns a return message for representing the communication connection state of the intelligent ammeter to the concentrator;
the concentrator updates the communication connection state of the network node corresponding to each intelligent electric meter according to the received return message of each electric device, and generates all to-be-communicated communication links of data transmission between each intelligent electric meter and the concentrator, wherein each to-be-communicated communication link comprises an HPLC link and at least one HRF link;
3. meter reading data request
The concentrator generates corresponding meter reading instructions in each meter reading period according to the established meter reading task; then taking the communication link with the best communication quality and the least relay node in the HRF links as the best HRF link, and taking at least one communication link of the HPLC link and the best HRF link as a target communication link; then, corresponding meter reading request instructions are issued to each intelligent ammeter through the target communication link; each intelligent ammeter analyzes and responds to the received meter reading request instruction, and then transmits the requested meter reading data to the concentrator through the target communication link;
4. data reliability maintenance
When the target communication link comprises two communication links, the concentrator synchronously collects corresponding meter reading data through the two communication links, compares the analyzed meter reading data, and judges whether the two paths of meter reading data are consistent with each other or not: (1) When the two are consistent, storing meter reading data at the current moment; (2) When the two messages are not matched, the heartbeat message is sent to each intelligent ammeter again, and the communication link between the district devices is updated according to the received return message; then, sending a meter reading request instruction to the corresponding intelligent ammeter again through the updated target communication link, and executing meter reading data complement;
when the target communication link only comprises one communication link, the concentrator directly stores the collected meter reading data at the current moment; and then, sending a device maintenance request representing the communication fault state to the platform area control center, wherein the device maintenance request comprises the corresponding communication fault type, the device identification number, the MAC address and the position coordinate of the intelligent ammeter.
2. The fusion communication method between the intelligent ammeter and the concentrator based on dual-mode communication as claimed in claim 1, wherein: the heartbeat message and the return message both contain preset check codes, and the message receiver verifies the check codes after analyzing the message and only responds to the verified message content.
3. The fusion communication method between the intelligent ammeter and the concentrator based on dual-mode communication as claimed in claim 1, wherein: a positioning module is also arranged in each intelligent ammeter in the platform area; the heartbeat message sent by the concentrator also comprises a position request instruction, and the intelligent ammeter adds the real-time position coordinates acquired by the positioning module into the sent return message when responding to the heartbeat message.
4. The fusion communication method between the intelligent ammeter and the concentrator based on dual-mode communication as claimed in claim 3, wherein: the positioning module adopts a positioning module based on a Beidou system or a GPS system or a dual-mode positioning module based on Beidou and GPS; and the positioning module is connected with the MCU of the intelligent ammeter by adopting a UART interface, so that data interaction is realized.
5. The fusion communication method between the intelligent ammeter and the concentrator based on dual-mode communication as claimed in claim 3, wherein: when the platform area control center receives the equipment maintenance request, firstly analyzing the fault type, then generating a corresponding solution, and sending the solution to technicians; technical staff handles communication faults of the intelligent electric meter according to a solution generated by the platform area control center, so that normal communication can be realized by an HPLC link and an HRF link between the intelligent electric meter and the concentrator; and when the solution corresponding to the communication fault needs to be carried out by a technician to the equipment site for field processing, the platform area control center also simultaneously sends the real-time position coordinates of the intelligent ammeter to the technician.
6. The fusion communication method between the intelligent ammeter and the concentrator based on dual-mode communication as claimed in claim 3, wherein: the concentrator stores updated position coordinates of each intelligent ammeter after each round of return message is sent; in the generation stage of the data transmission link, after communication faults occur in a carrier communication unit and a high-speed wireless communication unit in a certain intelligent electric meter, a concentrator acquires the stored latest position coordinates of the current intelligent electric meter and sends a corresponding equipment maintenance request to a platform area control center, wherein the equipment maintenance request comprises the corresponding communication fault type, equipment identification number, MAC address and position coordinates of the intelligent electric meter.
7. The fusion communication method between the intelligent ammeter and the concentrator based on dual-mode communication as claimed in claim 1, wherein: when a certain intelligent ammeter has executed the complement of meter reading data in the same meter reading period and the two complement paths of meter reading data still do not accord with each other, the concentrator stores the two paths of meter reading data simultaneously and sends a data verification instruction representing that the meter reading data has errors to the platform area control center, wherein the data verification instruction comprises the two paths of collected meter reading data, the equipment identification number, the MAC address and the position coordinate of the intelligent ammeter; then, the platform area control center is combined with the historical meter reading data of the intelligent electric meter to analyze the two paths of meter reading data at the current moment, so that data investigation is completed; meanwhile, the station area control center performs fault detection on the equipment operation state of the intelligent ammeter, and when the equipment has operation faults, a corresponding operation and maintenance solution is timely generated.
8. The fusion communication method between the intelligent ammeter and the concentrator based on dual-mode communication as claimed in claim 1, wherein: the high-speed wireless communication unit selects an HRF module adopting a win-sun communication protocol, and the HRF module supports a communication module with functions of MESH ad hoc network, self-repairing and automatic searching of an optimal path for network separation and re-network access of a single node in a local area network.
9. The fusion communication method between the intelligent ammeter and the concentrator based on dual-mode communication as claimed in claim 1, wherein: the ESAM encryption module is also arranged in the intelligent ammeter and is used for encrypting meter reading data sent to the concentrator; the ESAM encryption module is connected with the MCU of the intelligent ammeter through a 7816 interface, so that data interaction is realized.
10. The fusion communication method between the intelligent ammeter and the concentrator based on dual-mode communication as claimed in claim 1, wherein: and the dual-mode communication module is connected and interacted with the MCU of the intelligent ammeter by adopting a UART interface.
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