Power line carrier network management emergency system fused with power frequency communication and method thereof

Abstract

The application discloses a power line carrier network management emergency system and method combined with power frequency communication, and the power line carrier network management emergency system combined with power frequency communication comprises a carrier controller and a plurality of levels of routing nodes, in each level of adjacent routing nodes, a routing node relatively close to the carrier controller is arranged as a higher-level routing node, and a routing node relatively far away from the carrier controller is arranged as a lower-level routing node, and each level of routing nodes comprises a plurality of carrier sub-nodes. The power line carrier network management emergency system and method combined with power frequency communication disclosed by the application combine power frequency communication with power line carrier communication, utilize a power frequency communication channel as a network management channel, bear network state management, configuration management and fault management information and the like, realize separation of the network management channel and a service communication channel, and have the advantages of high reliability, fast fault diagnosis and the like.

Description

Technical Field

[0001] This invention belongs to the field of power line carrier communication (PLC) technology, specifically relating to an emergency management system for power line carrier networks that integrates power frequency communication and an emergency management method for power line carrier networks that integrates power frequency communication. Background Technology

[0002] Communication network management is divided into two methods: out-of-band management and in-band management. Out-of-band management refers to network management information and service information being carried on independent channels, without affecting each other. In-band management refers to network management information and service information being carried on the same channel, saving resources but causing mutual interference. Generally speaking, considering the reliability of network management and the timeliness of fault diagnosis, out-of-band management is preferred for communication network management. However, due to the scarcity of bandwidth resources, power line carrier communication (PLC) typically uses in-band network management, and sometimes even lacks network management methods altogether.

[0003] On the other hand, power line carrier communication has an "emergency communication" requirement, which is that in the event of a power outage or carrier node failure, the last bit of service information and status information (or "last breath" information) needs to be transmitted to the carrier controller or master station system within a limited time. This requirement is often difficult to achieve in the case of multiple failures (large data volume), complex network topology (long path), and deteriorated channel quality (unreliable), which affects the rapid location of the fault.

[0004] Therefore, further improvements will be made to address the aforementioned issues. Summary of the Invention

[0005] The main objective of this invention is to provide an emergency management system and method for power line carrier networks that integrates power frequency communication. This system combines power frequency communication with power line carrier communication, utilizing the power frequency communication channel as the network management channel to carry information such as network status management, configuration management, and fault management. It achieves separation between the network management channel (management data channel) and the service communication channel (service data transmission channel), offering advantages such as high reliability and rapid fault diagnosis. Furthermore, in the event of a power line carrier node power outage or failure, the network management channel serves as the final transmission channel for critical information, achieving a higher transmission success rate than the service channel.

[0006] To achieve the above objectives, this invention provides an emergency management system for power line carrier networks that integrates power frequency communication, used for power line carrier communication, comprising a carrier controller and several levels of routing nodes, wherein:

[0007] In each adjacent routing node, the routing node that is relatively close to the carrier controller is set as the upper-level routing node and the routing node that is relatively far away from the carrier controller is set as the lower-level routing node. Each routing node includes several carrier sub-nodes. There is a business data transmission channel between the carrier sub-nodes of the upper-level routing node and the carrier sub-nodes of the lower-level routing node. Power line carrier communication is used to transmit power business data including power consumption collection information and distribution automation, so that the carrier controller can manage the business data of specific carrier sub-nodes through several routing nodes.

[0008] A management data channel is provided between the carrier controller and each carrier sub-node to realize network data management of the power line carrier network, including status management, configuration management and fault management, in a point-to-point form of power frequency carrier communication.

[0009] As a further preferred embodiment of the above technical solution, both the carrier controller and the carrier sub-nodes are equipped with power line carrier communication modules. These modules are used to manage service data and network data.

[0010] The power line carrier communication module includes a core processor (MCU), a power line carrier communication modulation and demodulation unit, a first coupling front end, a bidirectional power frequency communication modulation and demodulation unit, and a second coupling front end;

[0011] The core processor communicates with the power line in the form of a high-frequency carrier signal (corresponding to business data management) through the power line carrier communication modulation and demodulation unit and the first coupling front end.

[0012] The core processor communicates with the power line in the form of a power frequency distorted signal through a bidirectional power frequency communication modulation and demodulation unit and a second coupling front end (corresponding to network data management).

[0013] As a further preferred technical solution to the above technical solution, for the second communication:

[0014] The bidirectional power frequency communication modulation and demodulation unit modulates the digital baseband signal generated by the core processor into a power frequency distortion signal and sends it to the power line through the second coupling front end; or it demodulates the power frequency distortion signal received from the power line by the second coupling front end into a digital baseband signal for processing by the core processor (the second coupling front end has the function of receiving and transmitting multiplexing, and the power frequency distortion signal is preferably 50Hz).

[0015] As a further preferred technical solution to the above technical solution, for the second communication, a power frequency communication protocol is designed and the uplink and downlink data frame structures for emergency communication (management data channel) are defined, wherein:

[0016] For uplink data frames, the uplink data frame represents information sent by the carrier sub-node to the carrier controller, including a preamble, frame header, source address, frame sequence number, frame type, data field, error correction check, and frame trailer (status management, fault management, and "last-ditch" emergency communication in network management are carried through this frame), where:

[0017] The preamble is used to synchronize the carrier subnodes and the carrier controller (Manchester code can be used to implement this). The frame header is used to define the start byte of the frame structure. The source address is used to define the address of the carrier subnode (the destination address refers to the address of the carrier controller, which is unique and can be defaulted to without definition). The frame sequence number is used to define the total number of frames to be transmitted and the sequence number of the current frame. The frame type is used to define the function of the current frame (e.g., status management, fault management, "last breath" emergency communication, etc.). The data field is used to define the specific payload (e.g., when the frame type is status management, the data field defines the channel quality status of the carrier subnodes, the relationship status between upper and lower level nodes, etc.). The error correction check is used to define the error correction code for detecting bit errors during transmission. The frame tail is used to define the end byte of the frame structure.

[0018] For downlink data frames, the downlink data frame represents information sent by the carrier controller to the carrier child nodes, including a preamble, frame header, destination address, frame sequence number, frame type, data field, error correction check, and frame trailer (configuration management in network management is carried through this frame), where:

[0019] The definitions of preamble, frame header, frame sequence number, error correction check, and frame trailer are the same as those of uplink data frames. The target address is used to define the carrier subnode address, the frame type is used to define the function of the current frame (e.g., configuration management function), and the data field is used to define the specific payload. When the frame type is configuration management, the data field defines the specific parameters that the carrier controller needs to configure (e.g., modifying the carrier subnode address, modifying the transmission power, configuring the communication channel, etc.).

[0020] As a further preferred technical solution to the above technical solution, the applicable power line carrier communication includes, but is not limited to, 9KHz-500KHz narrowband power line carrier communication and 2MHz-12MHz broadband power line carrier communication.

[0021] To achieve the above objectives, the present invention also provides an emergency management method for power line carrier networks that integrates power frequency communication, used to implement the aforementioned emergency management system for power line carrier networks that integrates power frequency communication.

[0022] The beneficial effects of this invention are as follows:

[0023] By utilizing power frequency communication as the management channel of the power line carrier communication network and the emergency communication transmission channel for the "last breath," it achieves separation from the service data channel, leveraging the advantages of power frequency communication in terms of anti-interference and anti-attenuation. It can realize the functions of status monitoring, parameter configuration, fault diagnosis, and emergency important information communication of each carrier sub-node by the carrier controller without multi-level routing, without occupying service data channel resources, and has high reliability and strong real-time performance. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the power line carrier network management emergency system and method integrating power frequency communication of the present invention.

[0025] Figure 2 This is a schematic diagram of the power line carrier communication module of the power line carrier network management emergency system and method integrating power frequency communication of the present invention.

[0026] Figure 3 This is a schematic diagram illustrating the structural definition of uplink and downlink data frames for the power line carrier network management emergency system and method integrating power frequency communication according to the present invention. Detailed Implementation

[0027] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0028] In the preferred embodiments of the present invention, those skilled in the art should note that power line carrier communication and the like involved in the present invention can be considered as prior art.

[0029] Preferred embodiment.

[0030] like Figure 1-3 As shown, this invention discloses an emergency management system for power line carrier networks that integrates power frequency communication, used for power line carrier communication, including a carrier controller and several levels of routing nodes, wherein:

[0031] In each adjacent routing node, the routing node connected to the relatively closer carrier controller is designated as the upper-level routing node, and the routing node connected to the relatively farther carrier controller is designated as the lower-level routing node. Each routing node includes several carrier sub-nodes. A service data transmission channel is provided between the carrier sub-nodes of the upper-level routing node and the carrier sub-nodes of the lower-level routing node. Power line carrier communication is used to transmit power service data, including power consumption collection information and distribution automation data. This enables the carrier controller to manage the service data of specific carrier sub-nodes through several routing nodes (the service data management is dedicated to carrying power service data such as power consumption information collection and distribution automation, and does not carry network management data such as status management, configuration management, and fault management).

[0032] A management data channel is provided between the carrier controller and each carrier sub-node to realize network data management of the power line carrier network, including status management, configuration management and fault management, in the form of point-to-point communication of power frequency carrier (due to the superior communication performance of power frequency carrier, this channel generally does not require relay routing, and status management, configuration management and fault management of the power line carrier network can be realized through the "point-to-point" communication between the carrier controller and all carrier sub-nodes, making network management more convenient without interfering with normal business data carrying).

[0033] Specifically, both the carrier controller and the carrier sub-nodes are equipped with power line carrier communication modules. These modules are used for business data management and network data management, including:

[0034] The power line carrier communication module includes a core processor (MCU), a power line carrier communication modulation and demodulation unit, a first coupling front end, a bidirectional power frequency communication modulation and demodulation unit, and a second coupling front end;

[0035] The core processor communicates with the power line in the form of a high-frequency carrier signal (corresponding to business data management) through the power line carrier communication modulation and demodulation unit and the first coupling front end.

[0036] The core processor communicates with the power line in the form of a power frequency distorted signal through a bidirectional power frequency communication modulation and demodulation unit and a second coupling front end (corresponding to network data management).

[0037] More specifically, regarding the second communication:

[0038] The bidirectional power frequency communication modulation and demodulation unit modulates the digital baseband signal generated by the core processor into a power frequency distortion signal and sends it to the power line through the second coupling front end; or it demodulates the power frequency distortion signal received from the power line by the second coupling front end into a digital baseband signal for processing by the core processor (the second coupling front end has the function of receiving and transmitting multiplexing, and the power frequency distortion signal is preferably 50Hz).

[0039] Furthermore, for the second communication, a power frequency communication protocol is designed and the uplink and downlink data frame structures for emergency communication (management data channel) are defined. To ensure communication reliability, the communication protocol adopts an acknowledgment mode, wherein:

[0040] For uplink data frames, the uplink data frame represents information sent by the carrier sub-node to the carrier controller, including a preamble, frame header, source address, frame sequence number, frame type, data field, error correction check, and frame trailer (status management, fault management, and "last-ditch" emergency communication in network management are carried through this frame), where:

[0041] The preamble is used to synchronize the carrier subnodes and the carrier controller (Manchester code can be used to implement this). The frame header is used to define the start byte of the frame structure. The source address is used to define the address of the carrier subnode (the destination address refers to the address of the carrier controller, which is unique and can be defaulted to without definition). The frame sequence number is used to define the total number of frames to be transmitted and the sequence number of the current frame. The frame type is used to define the function of the current frame (e.g., status management, fault management, "last breath" emergency communication, etc.). The data field is used to define the specific payload (e.g., when the frame type is status management, the data field defines the channel quality status of the carrier subnodes, the relationship status between upper and lower level nodes, etc.). The error correction check is used to define the error correction code for detecting bit errors during transmission. The frame tail is used to define the end byte of the frame structure.

[0042] For downlink data frames, the downlink data frame represents information sent by the carrier controller to the carrier child nodes, including a preamble, frame header, destination address, frame sequence number, frame type, data field, error correction check, and frame trailer (configuration management in network management is carried through this frame), where:

[0043] The definitions of preamble, frame header, frame sequence number, error correction check, and frame trailer are the same as those of uplink data frames. The target address is used to define the carrier subnode address, the frame type is used to define the function of the current frame (e.g., configuration management function), and the data field is used to define the specific payload. When the frame type is configuration management, the data field defines the specific parameters that the carrier controller needs to configure (e.g., modifying the carrier subnode address, modifying the transmission power, configuring the communication channel, etc.).

[0044] Furthermore, applicable power line carrier communication includes, but is not limited to, 9kHz-500kHz narrowband power line carrier communication and 2MHz-12MHz broadband power line carrier communication (applicable to power line carrier communication of different standards and frequency bands).

[0045] This invention also discloses an emergency management method for power line carrier networks that integrates power frequency communication, used to implement the aforementioned emergency management system for power line carrier networks that integrates power frequency communication.

[0046] Preferably, current power line carrier communication network management adopts an in-band management approach. The transmission of network management information such as status management, configuration management, and fault management requires sharing time slots or frequency resources with service data transmission, resulting in problems such as limited network status management information, configuration management interfering with services, and untimely fault management. This invention proposes an emergency system and method for power line carrier network management that integrates power frequency communication. By adding a power frequency communication submodule to the carrier module, it utilizes 50Hz power frequency communication to achieve power line carrier network management information transmission, independent of the power line carrier communication channel.

[0047] Preferably, the current success rate of "last-ditch" information transmission in power line carrier communication is low, affecting the rapid location of faults. This invention proposes an emergency management system and method for power line carrier networks that integrates power frequency communication. It leverages the advantages of 50Hz power frequency communication, such as long single-hop communication distance and strong anti-interference capability, to carry "last-ditch" information, thereby improving the reliability of information transmission in emergency situations.

[0048] It is worth mentioning that the technical features such as power line carrier communication involved in this patent application should be regarded as prior art. The specific structure, working principle, and possible control methods and spatial arrangement of these technical features can be adopted using conventional choices in the field, and should not be regarded as the inventive point of this patent. This patent will not be further elaborated in detail.

[0049] For those skilled in the art, modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. A power line carrier network management emergency system integrating power frequency communication, used for power line carrier communication, characterized in that, It includes a carrier controller and several levels of routing nodes, among which: In each adjacent routing node, the routing node that is relatively close to the carrier controller is set as the upper-level routing node and the routing node that is relatively far away from the carrier controller is set as the lower-level routing node. Each routing node includes several carrier sub-nodes. There is a business data transmission channel between the carrier sub-nodes of the upper-level routing node and the carrier sub-nodes of the lower-level routing node. Power line carrier communication is used to transmit power business data including power consumption collection information and distribution automation, so that the carrier controller can manage the business data of specific carrier sub-nodes through several routing nodes. A management data channel is provided between the carrier controller and each carrier sub-node to realize network data management of the power line carrier network, including status management, configuration management and fault management, in the form of point-to-point power frequency carrier communication; Power frequency communication is used as the network management signal for power line carrier communication, and when power carrier nodes are powered off or fail, the network management channel is used as an emergency communication transmission channel, and network management data and service data are separated. Both the carrier controller and the carrier sub-nodes are equipped with power line carrier communication modules. These modules are used for service data management and network data management. The power line carrier communication module includes a core processor, a power line carrier communication modulation and demodulation unit, a first coupling front end, a bidirectional power frequency communication modulation and demodulation unit, and a second coupling front end; The core processor communicates with the power line in the form of a high-frequency carrier signal through the power line carrier communication modulation and demodulation unit and the first coupling front end. The core processor communicates with the power line in the form of a power frequency distorted signal through a bidirectional power frequency communication modulation and demodulation unit and a second coupling front end. For the second communication: The bidirectional power frequency communication modulation and demodulation unit modulates the digital baseband signal generated by the core processor into a power frequency distortion signal and sends it to the power line through the second coupling front end; or it demodulates the power frequency distortion signal received from the power line by the second coupling front end into a digital baseband signal for processing by the core processor. For the second communication, a power frequency communication protocol is designed and the uplink and downlink data frame structures for emergency communication are defined, wherein: For uplink data frames, an uplink data frame represents information sent by a carrier subnode to the carrier controller, including a preamble, frame header, source address, frame sequence number, frame type, data field, error correction check, and frame trailer, where: The preamble is used to synchronize the carrier subnodes and the carrier controller. The frame header is used to define the start byte of the frame structure. The source address is used to define the address of the carrier subnode. The frame sequence number is used to define the total number of frames to be transmitted and the sequence number of the current frame. The frame type is used to define the function of the current frame. The data field is used to define the specific payload. The error correction check is used to define the error correction code for detecting bit errors during transmission. The frame tail is used to define the end byte of the frame structure. For downlink data frames, the downlink data frame represents information sent by the carrier controller to the carrier child nodes, including the preamble, frame header, destination address, frame sequence number, frame type, data field, error correction check, and frame trailer, where: The definitions of preamble, frame header, frame sequence number, error correction check, and frame trailer are the same as those of uplink data frames. The target address is used to define the carrier sub-node address, the frame type is used to define the function of the current frame, and the data field is used to define the specific payload. When the frame type is configuration management, the data field defines the specific parameters that the carrier controller needs to configure.

2. The power line carrier network management emergency system integrating power frequency communication according to claim 1, characterized in that, Applicable power line carrier communication includes, but is not limited to, 9kHz-500kHz narrowband power line carrier communication and 2MHz-12MHz broadband power line carrier communication.

3. An emergency management method for power line carrier networks integrating power frequency communication, characterized in that, An emergency management system for power line carrier network that integrates power frequency communication as described in any one of claims 1-2.

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