RF Mesh network node power failure report aggregation management method, medium and terminal

Abstract

The invention is suitable for the technical field of intelligent electric meters, and relates to an RF Mesh network node power failure report aggregation management method, a medium and a terminal, the process is simple, the operation is convenient, the power failure report efficiency and success rate of a large-scale RF Mesh communication network (such as WISUN communication, RF dual-mode communication and the like) can be improved, and the network reliability is improved. The power failure report delay time, the power failure report frequency and the power failure report retransmission times of different network levels are optimized for the power failure report of the whole RF Mesh network through an aggregation algorithm, so that the accuracy and the timeliness of the power failure report of the nodes in the whole RF Mesh network are improved, and meanwhile, the energy required by the node report in the large-scale RF Mesh network is reduced; therefore, the super-capacitor capacity on the RF communication module is reduced, and the cost is effectively reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of smart meters, and particularly relates to a power-off reporting aggregation management method, medium and terminal for RF Mesh network nodes. Background Technique

[0002] Advanced Metering Infrastructure (AMI) is one of the key components of the smart grid. It allows two-way communication and data exchange, establishing an efficient connection between power companies and end-users. AMI solutions typically include components such as smart meters, communication networks, and data management systems. In modern power AMI systems, large-scale RF Mesh networking communication technology plays an important role in timely communication and data transmission with end-user smart meters.

[0003] Currently, for power-off reporting in large-scale RF Mesh (Wireless Mesh Network) communication FAN networks, a supercapacitor with a very large capacity is often added to the RF communication module. Through this large-capacity supercapacitor, the RF communication module can still operate normally for more than 3 minutes after power-off, achieving power-off reporting for each node in the FAN network and relaying the upload of power-off reporting frames. This method requires adding a supercapacitor with a very large capacity to the RF module. If the added capacitor is small, there will be a situation where the reporting frames of some edge nodes in the FAN network cannot reach the root node gateway, resulting in failure to report. Because the capacity of the supercapacitor on the RF module is limited, as the scale of the RF Mesh FAN network expands, the number of nodes in the FAN network increases, and the number of levels in the FAN network increases, the success rate of power-off reporting will become lower and lower, causing problems of untimely and inaccurate power outage detection. The patent application with the publication number CN202410695156.X provides a dual-mode communication module, a power-off reporting method, and a power consumption information acquisition system. This dual-mode communication module includes a dual-mode communication unit, a standby supercapacitor, a photovoltaic power generation panel, and a photovoltaic charging capacitor; the photovoltaic power generation panel is used to charge the photovoltaic charging capacitor, the photovoltaic charging capacitor is used to charge the standby supercapacitor, and the standby supercapacitor is used to supply power to the dual-mode communication unit when the external power supply is disconnected; the dual-mode communication unit is used to monitor the power-off signals of adjacent dual-mode communication modules, and when the external power supply is disconnected, perform an alarm broadcast, obtain the power-off confirmation signals of adjacent dual-mode communication modules, determine the module information of the dual-mode communication modules in the power-off state based on each power-off signal and each power-off confirmation signal, and report the module information of each dual-mode communication module in the power-off state. This patent application also realizes power-off reporting through a supercapacitor, suffering from the same drawbacks as the prior art.

[0004] Therefore, how to provide a power-off reporting method with high timeliness and accuracy to improve the success rate of power-off reporting is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the object of the present invention is to provide a power-off reporting aggregation management method for RF Mesh network nodes to solve the problem of poor timeliness and accuracy of the power-off reporting method in the prior art; in addition, the present invention also provides a power-off reporting aggregation management medium and terminal for RF Mesh network nodes.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] In the first aspect, the present invention provides a power-off reporting aggregation management method for RF Mesh network nodes, including the following steps:

[0008] S10. The radio and processor of the power-off sub-node device module of the power grid are both turned off until the end of the recognition period;

[0009] S20. If the power-off of the power grid terminates before the end of the recognition period, the sub-node device will resume normal operation; if the power-off of the power grid lasts longer than the recognition period, the sub-node device will start the reporting process and start the relevant reporting period timer;

[0010] S30. If a power-off reporting message is received by a sub-node device in the RF Mesh network from other sub-node devices in the RF Mesh network, the sub-node device will start the reporting process and start its reporting period timer;

[0011] S40. Any parent node device that receives a power-off reporting notice from a sub-node device will merge the received power-off reports, create an aggregated power-off report, and list all affected nodes;

[0012] S50. Each device broadcasts its first aggregated power-off report and the reporting period within the first reporting period to its parent node at random incremental reporting time slots;

[0013] S60. When the root node gateway receives the aggregated power-off reports reported in the FAN network below it, it parses the reports, adds timestamps, creates a confirmed downtime list, and reports it to the HES system.

[0014] Further, in step S30, when executing the reporting process, the sub-node device suspends the local generation of all other message transmissions, including the keep-alive heartbeat messages used by the RF wireless network layer protocol and the neighbor exchange process messages, and suspends the relay of data packets from other nodes in the Mesh network.

[0015] Furthermore, the relative positions of each child node device root that starts the reporting process and its associated root node gateway are used to calculate its incremental reporting period. The formula for the incremental reporting time slot of the child node device is as follows:

[0016] Incremental reporting period = reporting period / (1 + n).

[0017] Furthermore, in step S50, at the end of each incremental reporting period, each device will check whether it has received new power-off report information. If so, it will broadcast its aggregated new power-off report table to its parent node in the next incremental reporting time slot period until the module no longer supports transmission or at most 5 times.

[0018] Furthermore, in step S60, the specific process of the root node gateway reporting is as follows:

[0019] S601. When the root node gateway receives the aggregated power-off report reported in the FAN network, it parses the report, adds a time stamp, and creates a confirmed shutdown list, and waits for 1 minute in the minimum waiting period with the minimum delay to wait for the aggregated power-off reports reported successively in the FAN network during the same period, and forms a final confirmed shutdown list;

[0020] S602. After the 1-minute minimum delay period ends, the root node gateway reports the final confirmed shutdown list to the first configured notification server at a randomly allocated moment. After receiving the final confirmed shutdown list, the notification server returns an ACK confirmation receipt message to the root node gateway;

[0021] S603. If the root node gateway does not successfully receive the confirmation from the notification server, it assumes that the transmission attempt fails and makes the next attempt during the retry period;

[0022] S604. If the transmission fails again, it attempts to retry in consecutive retry windows until the transmission is successful or the maximum number of retries is reached.

[0023] Furthermore, in step S10, the identification period is 12 seconds.

[0024] Furthermore, in step S20, the reporting period is 2 seconds.

[0025] Furthermore, the node sends the power-off report in the form of a 4-byte ultra-short frame without a time stamp.

[0026] In a second aspect, the present invention also provides a computer-readable storage medium. The storage medium stores a computer program, and when the computer program is executed by a processor, the above-mentioned method is implemented.

[0027] In a third aspect, the present invention further provides an electronic terminal, including: a processor and a memory; the memory is used for storing a computer program, and the processor is used for executing the computer program stored in the memory so that the terminal executes the method as described above.

[0028] Compared with the prior art, the power-off reporting aggregation management method, medium and terminal of the RF Mesh network node provided by the present invention has at least the following beneficial effects:

[0029] Currently, for power-off reporting based on large-scale RF Mesh communication FAN networks, very large supercapacitors with a large capacity are often added to the RF communication module, and the success rate of power-off reporting is relatively low, resulting in the problems of untimely and inaccurate power outage detection. The process of the present invention is simple and the operation is convenient. It can improve the power-off reporting efficiency and success rate of large-scale RF Mesh communication networks (such as WISUN communication, RF dual-mode communication, etc.). Through the aggregation algorithm, the power-off reporting delay time, power-off reporting frequency, and power-off reporting retransmission times of different network levels for the power-off reporting of the entire RF Mesh network are optimized, improving the accuracy and timeliness of the power-off reporting of nodes in the entire RF Mesh network. At the same time, it reduces the energy required for nodes to report in the large-scale RF Mesh network, thereby reducing the capacity of the supercapacitor on the RF communication module and lowering the cost. The power-off reporting aggregation management method proposed by the present invention can reduce the capacity of the supercapacitor to provide 12 seconds of identification time for power-off and 10 seconds of "last gasp" radio activity time on the premise of ensuring accuracy and timeliness. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the solution of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0031] Figure 1 It is a flowchart of a power-off reporting aggregation management method for an RF Mesh network node provided by an embodiment of the present invention;

[0032] Figure 2 It is a schematic diagram of a 4-byte ultra-short frame mode for a node to send a power-off report in a power-off reporting aggregation management method for an RF Mesh network node provided by an embodiment of the present invention;

[0033] Figure 3 It is a schematic diagram of aggregating power-off reports in a power-off reporting aggregation management method for an RF Mesh network node provided by an embodiment of the invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0036] The present invention provides a power-off reporting aggregation management method for RF Mesh network nodes, which is applied to the node power outage fault detection process in a distribution network. The power-off reporting aggregation management method for RF Mesh network nodes includes the following steps:

[0037] S10. The radio and processor of the power-off sub-node device module of the power grid are turned off until the end of the recognition period; S20. If the power-off of the power grid terminates before the end of the recognition period, the sub-node device will resume normal operation; if the power-off of the power grid continues to exceed the recognition period, the sub-node device will start the reporting process and start the relevant reporting period timer; S30. If a power-off reporting message is received by a sub-node device in the RF Mesh network from other sub-node devices in the RF Mesh network, the sub-node device will start the reporting process and start its reporting period timer; S40. Any parent node device that receives a power-off reporting notification from a sub-node device will merge the received power-off reports to create an aggregated power-off report listing all affected nodes; S50. Each device broadcasts its first aggregated power-off report and the reporting period within the first reporting period to its parent node at random incremental reporting time slots; S60. When the root node gateway receives the aggregated power-off reports reported in the FAN network below it, it parses the reports, adds timestamps, creates a confirmed outage list, and reports it to the HES system.

[0038] The process of the present invention is simple and convenient to operate. It can improve the power-off reporting efficiency and success rate of large-scale RF Mesh communication networks (such as WISUN communication, RF dual-mode communication, etc.). Through the aggregation algorithm, the power-off reporting delay time, power-off reporting frequency, and power-off reporting retransmission times at different network levels of the power-off reporting of the entire RF Mesh network are optimized, improving the accuracy and timeliness of the power-off reporting of nodes in the entire RF Mesh network. At the same time, it reduces the energy required for nodes to report in a large-scale RF Mesh network, thereby reducing the capacity of the supercapacitor on the RF communication module and effectively reducing costs.

[0039] To enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0040] The present invention provides a method for power-off reporting aggregation management of RF Mesh network nodes, which is applied to the detection process of node power outage faults in a distribution network, and the principle is as follows:

[0041] Since each child node in the entire RF Mesh network knows its position (and the level where it is located) relative to the root node gateway or the relay node bridge, it can autonomously transmit the power-off report in a way that increases the probability of the power-off report successfully reaching the root node gateway or the relay node bridge. To save the transmission time of the power-off report, the node sends the power-off report in the form of a 4-byte ultra-short frame without a timestamp. Any node in the RF Mesh network that receives the power-off report from another node will combine the received power-off report into an aggregated power-off report listing all the nodes affected by the power-off.

[0042] Each node that receives the power-off report or experiences a power-off will broadcast its aggregated power-off report to all its parent nodes in a random increment reporting time slot within a 2-second reporting cycle. Thereafter, each node uses its understanding of the Mesh network, such that nodes far from the root node will send their power-off report information more frequently to increase the probability of successfully reaching their parent nodes, while nodes close to the root node will send the power-off report information less frequently to provide more time to aggregate the power-off information data from child nodes and reduce the possibility of conflicts. According to the hop depth of the node in the Mesh network, each node uses a different increment power-off report time slot: 1000 ms for nodes 1 hop away from the root node, 666 ms for nodes 2 hops away from the root node, 500 ms for nodes 3 hops away from the root node, etc. In each increment reporting time slot, each node checks whether it has received a new power-off report. If so, it immediately broadcasts the aggregated power-off report including the new power-off information. Regardless of whether a new power-off report is received, the node continues to re-broadcast the aggregated power-off report every approximately 2 seconds until the entire 10 seconds are used up. When the root node gateway receives the power-off report, the root node gateway adds a timestamp to these power-off messages, aggregates them into an acknowledged power-off report, and transmits this report to the HES system in real time.

[0043] Specifically, in combination with Figures 1 to 3 , in this embodiment, the method for power-off reporting aggregation management of RF Mesh network nodes includes the following steps:

[0044] S10. The power-off sub-node device of the power grid enters the sleep mode (both the radio and the processor of the module are turned off) until the end of a fixed 12-second identification period.

[0045] S20. If the power grid power failure terminates before the end of the 12 - second identification period, the child node device will resume normal operation. The child node device will not report such meaningless instantaneous power - on and power - off events of the power grid to reduce the information transmission in the RF Mesh network. If the power grid power failure lasts for more than 12 seconds of the identification period, the child node device will start the reporting process and start the relevant 2 - second reporting cycle timer. To save the transmission time of the power - off report, the node sends the power - off report in the form of a 4 - byte ultra - short frame without a timestamp.

[0046] S30. If a child node device in the RF Mesh network receives a power - off reporting message from other child node devices in the RF Mesh network, then this child node device starts the reporting process and starts its 2 - second reporting cycle timer.

[0047] Specifically, in this embodiment, during the execution of the reporting process, the child node device will suspend the local generation of all other message transmissions (including the keep - alive heartbeat messages and neighbor exchange process messages used by the RF wireless network layer protocol), and suspend the relay of data packets from other nodes in the Mesh network.

[0048] Furthermore, in this embodiment, each child node device that starts the reporting process calculates its incremental reporting cycle according to its relative position to the associated root node gateway:

[0049] If the child node device is 1 hop away from the root node gateway, the incremental reporting cycle is 1000 ms;

[0050] If the child node device is 2 hops away from the root node gateway, the incremental reporting cycle is 666 ms;

[0051] If the child node device is 3 hops away from the root node gateway, the incremental reporting cycle is 500 ms;

[0052] The formula for the incremental reporting time slot of the child node device is: Incremental reporting cycle (n - hop device)=Reporting cycle / (1 + n). The incremental reporting cycle defines the transmission time slot for each device within each reporting cycle. Among them, the more hops the device is away from the root node gateway, the more times of incremental reporting. The fewer hops the device is away from the root node gateway, the larger the time slot length for each incremental reporting.

[0053] S40. Any parent node device that receives a power - off reporting notification from a child node device will merge the received power - off reports and create an aggregated power - off report listing all affected nodes.

[0054] S50. Each device broadcasts its first aggregated power - off report and the reporting period within the first reporting period to its parent node within a random incremental reporting time slot period.

[0055] Furthermore, in this embodiment, at the end of each subsequent incremental reporting period, each device will check whether it has received new power-off report information. If it has, during the next incremental reporting time slot period, it will broadcast its aggregated new power-off report table to its parent node until the module no longer supports transmission or at most 5 times.

[0056] S60. When the root node gateway receives the aggregated power-off reports reported in the FAN network below it, it parses the reports, adds timestamps, creates a confirmed outage list, and reports it to the HES system. The root node gateway is generally equipped with an 8-hour backup rechargeable battery to ensure that the gateway can still work properly for 8 hours after a power outage.

[0057] Specifically, in this embodiment, in order for the HES system to know the power grid outage situation in real time, the root node gateway in each FAN network must be correctly configured to report to one or more notification servers. The specific process of reporting by the root node gateway is as follows:

[0058] S601. Once the root node gateway receives the aggregated power-off reports reported in the FAN network, it will parse the reports, add timestamps, create a confirmed outage list, and wait for a minimum latency waiting period of 1 minute to wait for the aggregated power-off reports reported successively in the FAN network during the same period, and form a final confirmed outage list.

[0059] S602. After the minimum latency period of 1 minute ends, the root node gateway reports the final confirmed outage list to the first configured notification server at a randomly assigned moment. After receiving the final confirmed outage list, the notification server sends an ACK confirmation receipt message to the root node gateway.

[0060] S603. If the root node gateway does not successfully receive the confirmation from the notification server, it is assumed that the transmission attempt fails. The next attempt will be during the retry period. During the retry period, the attempt is started at a random moment, and only one attempt is allowed during this period.

[0061] S604. If the transmission fails again, it will be attempted in consecutive retry windows until the transmission is successful or the maximum number of retries is reached.

[0062] S605. If the notification server confirms that the transmission is successful, the node status in the corresponding FAN network in the AMI network (whether powered off) is updated for that specific notification server.

[0063] S606. If the root node gateway is configured with multiple notification servers, repeat steps S602 to S604 for each notification server.

[0064] An embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, any one of the methods in this embodiment is implemented.

[0065] An embodiment of the present invention also provides an electronic terminal, including: a processor and a memory; the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory so that the terminal executes any one of the methods in this embodiment.

[0066] For the computer-readable storage medium in this embodiment, those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by hardware related to the computer program. The foregoing computer program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps including the above method embodiments; and the foregoing storage medium includes: various media such as ROM, RAM, magnetic disk or optical disc that can store program codes.

[0067] The electronic terminal provided in this embodiment includes a processor, a memory, a transceiver, and a communication interface. The memory and the communication interface are connected to the processor and the transceiver and complete communication with each other. The memory is used to store a computer program, the communication interface is used for communication, and the processor and the transceiver are used to run the computer program to make the electronic terminal execute each step of the above method.

[0068] Compared with the prior art, for the power-off reporting aggregation management method of the RF Mesh network node described in the above embodiment, currently, for power-off reporting in a large-scale RF Mesh communication FAN network, a super capacitor with a very large capacity is often added to the RF communication module, and the success rate of power-off reporting is relatively low, resulting in problems of untimely and inaccurate power outage detection. The process of the present invention is simple and the operation is convenient. It can improve the power-off reporting efficiency and success rate of a large-scale RF Mesh communication network (such as WISUN communication, RF dual-mode communication, etc.). Through an aggregation algorithm, the power-off reporting delay time, power-off reporting frequency, and power-off reporting retransmission times of different network levels in the entire RF Mesh network are optimized for power-off reporting, improving the accuracy and timeliness of node power-off reporting in the entire RF Mesh network. At the same time, it reduces the energy required for node reporting in a large-scale RF Mesh network, thereby reducing the capacity of the super capacitor on the RF communication module and reducing costs. The power-off reporting aggregation management method proposed by the present invention can reduce the capacity of the super capacitor to provide 12 seconds of identification time for power-off and 10 seconds of "last gasp" radio activity time while ensuring accuracy and timeliness.

[0069] Obviously, the embodiments described above are only the preferred embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are shown in the drawings, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing specific embodiments, or perform equivalent replacements for some of the technical features. Any equivalent structure made by using the content of the specification and drawings of the present invention, directly or indirectly applied in other related technical fields, is similarly within the scope of the patent protection of the present invention.

Claims

1. A power-off reporting and aggregation management method for RF Mesh network nodes, characterized in that It includes the following steps: S10. The radio and the processor of the sub-node device module in the power-grid power-off state are both turned off until the end of the recognition period; S20. If the power-grid power-off terminates before the end of the recognition period, the sub-node device will resume normal operation; if the power-grid power-off lasts longer than the recognition period, the sub-node device will start the reporting process and start the relevant reporting period timer; S30. If a sub-node device in the RF Mesh network receives a power-off reporting message from other sub-node devices in the RF Mesh network, the sub-node device will start the reporting process and start its reporting period timer; S40. Any parent node device that receives a power-off reporting notice from a sub-node device will merge the received power-off reports, create an aggregated power-off report, and list all affected nodes; S50. Each device broadcasts its first aggregated power-off report and the reporting period within the first reporting period to its parent node in a random incremental reporting time slot period; S60. When the root node gateway receives the aggregated power-off reports reported in the FAN network below it, it parses the reports, adds timestamps, creates a confirmed shutdown list, and reports it to the HES system.

2. The method for power-off reporting and aggregation management of RF Mesh network nodes according to claim 1, wherein, In step S30, when executing the reporting process, the sub-node device pauses the local generation of all other message transmissions, including the keep-alive heartbeat messages and neighbor exchange process messages used by the RF wireless network layer protocol, and pauses the relay of data packets from other nodes in the Mesh network.

3. The method for aggregating management of power-off reporting of RF Mesh network nodes according to claim 2, wherein Each sub-node device that starts the reporting process calculates its incremental reporting period based on the relative position between its root and the associated root node gateway. The incremental reporting time slot calculation formula for the sub-node device is: Incremental reporting period = reporting period / (1 + n).

4. A method for aggregating and managing power-off reporting of RF Mesh network nodes according to claim 1, characterized in that, In step S50, at the end of each incremental reporting period, each device will check whether it has received new power-off report information. If so, it will broadcast its aggregated new power-off report table to its parent node in the next incremental reporting time slot period until the module no longer supports transmission or up to 5 times.

5. A method for aggregating and managing power-off reports of RF Mesh network nodes according to claim 1, characterized in that, In step S60, the specific reporting process of the root node gateway is as follows: S601. When the root node gateway receives the aggregated power-off reports reported in the FAN network, it parses the reports, adds timestamps, creates a confirmed shutdown list, and waits for 1 minute in the minimum delay waiting period to wait for the aggregated power-off reports that are successively reported in the FAN network within the same period, and forms a final confirmed shutdown list; S602. After the 1-minute minimum delay period ends, the root node gateway reports the final confirmed shutdown list to the first configured notification server at a randomly allocated moment. After receiving the final confirmed shutdown list, the notification server replies to the root node gateway with an ACK to confirm receipt of the information; S603. If the root node gateway does not successfully receive the confirmation from the notification server, it assumes that the transmission attempt fails and makes the next attempt during the retry period; S604. If the transmission fails again, it tries to retry in consecutive retry windows until the transmission is successful or the maximum number of retries is reached.

6. The power-off reporting aggregation management method for an RF Mesh network node according to claim 1, characterized in that In step S10, the recognition period is 12 seconds.

7. A method for aggregating and managing power-off reports of RF Mesh network nodes according to claim 1, characterized in that, In step S20, the reporting period is 2 seconds.

8. A method for aggregating management of power-off reporting of RF Mesh network nodes according to claim 1, characterized in that, The node sends the power-off report in the form of a 4-byte ultra-short frame without a timestamp.

9. A computer-readable storage medium, characterized in that, The storage medium stores a computer program, and when the computer program is executed by a processor, the method described in any one of claims 1 to 8 is implemented.

10. An electronic terminal, characterized in that, Including: a processor and a memory; the memory is used for storing a computer program, and the processor is used for executing the computer program stored in the memory, so that the terminal executes the method described in any one of claims 1 to 8.

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