CN113259893B - Power distribution body area network node authentication system and method - Google Patents

Power distribution body area network node authentication system and method Download PDF

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Publication number
CN113259893B
CN113259893B CN202110720289.4A CN202110720289A CN113259893B CN 113259893 B CN113259893 B CN 113259893B CN 202110720289 A CN202110720289 A CN 202110720289A CN 113259893 B CN113259893 B CN 113259893B
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node
information
sensing
sensing node
sink
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CN113259893A (en
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甄岩
陈文彬
贺金红
白晖峰
霍超
张港红
于华东
李卫华
高建
尹志斌
马率颖
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State Grid Information and Telecommunication Co Ltd
Beijing Smartchip Microelectronics Technology Co Ltd
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State Grid Information and Telecommunication Co Ltd
Beijing Smartchip Microelectronics Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
    • G—PHYSICS
    • G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
    • G16Y10/00—Economic sectors
    • G16Y10/35—Utilities, e.g. electricity, gas or water
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/12—Shortest path evaluation
    • H04L45/126—Shortest path evaluation minimising geographical or physical path length
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/12—Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/20—Communication route or path selection, e.g. power-based or shortest path routing based on geographic position or location
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

The embodiment of the invention provides a system and a method for network node authentication, reconfiguration and data transmission of a power distribution body area network, belonging to the field of power distribution internet of things. The power distribution body area network node authentication system comprises a sensing node, a sink node and an intelligent terminal; the sensing node is configured to: sending a registration request of a newly added node to a sink node; selecting a sink node j closest to the sink node to send a first registration request according to first notification information returned by the sink node in response to the newly added node registration request; the sink node j is configured to: and authenticating the sensing node according to the first registration request. The power distribution body area network node authentication system is beneficial to improving the automation and intelligentization levels of power data acquisition, transmission and processing.

Description

Power distribution body area network node authentication system and method
Technical Field
The invention relates to the field of distribution internet of things, in particular to a system and a method for network node authentication, reconfiguration and data transmission of a distribution body area network for access communication of a distribution internet of things tip.
Background
The wireless communication is used as a key technology of the internet of things technology, reliable and powerful guarantee is provided for character interconnection and object interconnection in the power internet of things, and then a centralized and unidirectional power grid is converted into a power grid for consumer interaction. From the perspective of communication range, the wireless communication technology of the power internet of things constructed in the internet concept can be divided into a local area network and a wide area network. The local area network comprises information transmission such as energy collection, aggregation and sharing, internal energy storage, power consumption and the like, and the local area network really realizes bidirectional on-demand transmission and dynamic balanced use of energy by an open equivalent information and energy integrated framework so as to adapt to energy access to the maximum extent.
At present, the running condition of the existing power internet of things is good, but the sensing capability of the internal state of power equipment on a sensing layer still has some inadaptability, especially for the state sensing of the power equipment in a box body of a totally-enclosed metal structure such as an intelligent low-voltage distribution box, low-voltage switch equipment, a metering and measuring device, an intelligent distribution transformer terminal, a protection electrical appliance and auxiliary equipment are assembled in a closed metal box body according to the electrical wiring requirement. Mechanical state data, environmental data and the operational data of each equipment in the box, like the collection of transformer oil temperature, column cap temperature, box humidity etc. information, be subject to totally closed metallic structure's characteristic, often still need use traditional artifical collection mode, or the micropower wireless communication technique that some scene examination used BLE (Bluetooth Low Energy ) as the representative realizes the collection and the network deployment transmission of data, wherein:
1) manual mode: no limitation of a networking mode of the sensing node;
2) bluetooth mode: supporting point-to-point and point-to-multipoint communication, bluetooth devices can form two networks according to a specific mode: piconet (Piconet) and distributed network (Scatternet), where the establishment of a Piconet is started by the connection of two devices, which may consist of eight devices at most. In a piconet, only one Master device (Master) is used, and the other Slave devices (Slave) are used, different Master-Slave device pairs can adopt different link modes, and the link mode can be changed at will in one communication. Several independent piconets are linked together in a particular manner to form a distributed network. All bluetooth devices communicate peer-to-peer.
However, the existing data acquisition and networking transmission methods still have the following defects: numerous power equipment in the power backbone network are of a fully-closed metal structure, if the internal state of the power equipment is sensed in a manual acquisition mode, the labor cost is increased, the real-time performance of data acquisition is limited, and effective acquisition of data of the sensing layer in the scene of the power internet of things is restricted. On the other hand, although a small amount of trial applications exist in the BLE technology, the BLE technology is limited by a closed metal structure of the power equipment, partial signals are shielded and cannot be transmitted, internal data of the power distribution networking equipment cannot be effectively transmitted in time, transmission cost and power consumption are high, and therefore timeliness of data transmission of the node equipment in the power internet of things scene is insufficient.
Disclosure of Invention
The invention aims to provide a system and a method for power distribution body area network node authentication, reconfiguration and data transmission, wherein the power distribution body area network node authentication system is improved on the basis of an existing device in a power equipment box to construct a power distribution body area network of a three-level network system of a sensing node, a sink node and an intelligent terminal, the sensing node selects a shortest transmission path according to path propagation loss to autonomously send a registration request so as to realize self-organization of the power distribution body area network, a set of effective wireless communication transmission mechanism is provided, and the automation and the intelligentization level of power data acquisition, transmission and processing in the fully-closed metal structure power equipment box are facilitated to be improved.
In order to achieve the above object, an embodiment of the present invention provides a power distribution body area network node authentication system, where the system includes a sensing node, a sink node, and an intelligent terminal; the sensing node is configured to: sending a registration request of a newly added node to a sink node; selecting a sink node j closest to the sink node to send a first registration request according to first notification information returned by the sink node in response to the newly added node registration request; the sink node j is configured to: and authenticating the sensing node according to the first registration request.
Preferably, the selecting, according to the first notification information returned by the sink node in response to the newly added node registration request, the sink node j closest to the newly added node registration request to send the first registration request includes: the sink node which receives the registration request of the newly added node calculates the distance between the sink node and the sensing node according to the power of a received signal and sends first notification information to the sensing node, wherein the first notification information comprises the distance; and the sensing node receiving the first notification information determines the nearest sink node j according to the distance, and sends a first registration request to the sink node j.
Optionally, the authenticating the sensing node according to the first registration request includes: the sink node j receives the first registration request and sends a second registration request of the sensing node to the intelligent terminal; the intelligent terminal receives the second registration request and sends first response information to the sink node j; the sink node j receives the first response information and sends second response information to the sensing node; the sensing node receives the second response information and sends content first confirmation information to the sink node j; and the sink node j receives the first confirmation information and returns second confirmation information to the intelligent terminal.
Optionally, the first acknowledgement information is an empty ACK packet; the second acknowledgement information is an empty ACK message.
Optionally, the second registration request includes sensing node key attribute information and sink node key attribute information.
Optionally, the first response information includes a first synchronization instruction, which is used for synchronization confirmation of the sink node j and the intelligent terminal; the second response message includes a second synchronization instruction for synchronization confirmation of the sensing node and the sink node j.
Optionally, the newly added node registration request includes sensing node key attribute information; the first notification information also comprises the key attribute information of the sink node; the first registration request comprises sensing node complete attribute information, and the sensing node complete attribute information comprises the sensing node key attribute information.
Optionally, the sensing node is further configured to: and marking the sink node which is close to the second as a standby sink node according to the first notification information, and communicating with the standby sink node under the condition that the sink node j cannot communicate.
The embodiment of the invention also provides a power distribution body area network node reconfiguration system, which comprises a sensing node, a sink node and an intelligent terminal; the sink node is configured to: determining that the sensing node h is on line according to second reported information replied by the sensing node h; sending a reconfiguration request about the sensing node h to the intelligent terminal under the condition that the second reported information is not received within the continuous preset time length; the intelligent terminal is used for: receiving the reconfiguration request, judging the running state of the sensing node h, and issuing a reconnection instruction or a deletion instruction aiming at the sensing node h to the sink node; the sink node is further configured to: and receiving an instruction issued by the intelligent terminal, and performing reconnection/deletion operation on the sensing node h.
Optionally, before determining that the sensing node h is online according to the second reporting information replied by the sensing node h, the method further includes: the sensing node automatically sends first reporting information to the sink node at regular time, and the first reporting information is used for informing the sink node that the sensing node is online; the method comprises the steps that under the condition that a sink node does not receive first reporting information from a sensing node h within continuous preset times or continuous preset duration, a sensing node state reporting instruction is sent to the sensing node h, and the sensing node h receiving the sensing node state reporting instruction replies second reporting information to inform the sink node that the sensing node h is online.
Optionally, the receiving the instruction issued by the intelligent terminal, and performing reconnection/deletion operation on the sensing node h includes: the sink node performs reconnection operation on the sensing node h under the condition that the reconnection instruction is received; the sink node deletes the complete attribute information of the sensing node h under the condition that the sink node receives the deletion instruction, and the intelligent terminal deletes the key attribute information of the sensing node h; wherein the reconnecting the sensing node h comprises: forwarding the reconnection instruction to the sensing node h; and the sensing node h is reconnected with the aggregation node and keeps the on-line state under the condition of receiving the reconnection instruction.
Optionally, after the sink node performs reconnection on the sensing node h under the condition that the sink node receives the reconnection instruction, the method further includes: the sink node sends the sensing node state reporting instruction to the sensing node h; the sensing node h receives the sensing node state reporting instruction and returns third reporting information to the sink node, and the third reporting information is used for informing that the sensing node h is online; and the sink node receives the third reporting information and returns reconnection completion information to the intelligent terminal.
Optionally, the first reporting information is a 1-bit flag bit; the second reported information is a 1-bit zone bit; and the reconnection completion information is an empty ACK message.
The embodiment of the invention also provides a power distribution body area network node data transmission system, which comprises a sensing node, a sink node and an intelligent terminal; the sensing node is configured to: sending service data to the sink node; the sink node is configured to: the service data is sent to the intelligent terminal after being subjected to data processing; the intelligent terminal is used for: and receiving the service data after data processing, and sending third response information to the sink node.
Optionally, the data processing includes: removing redundant information, designing data quantity sub-packaging processing according to optimal energy consumption and data effectiveness, and unifying information acquisition protocols of all sensing nodes according to the requirements of the intelligent terminal.
Optionally, the sink node is configured to: under the condition that the data volume of the service data exceeds a threshold value, designing data volume subpackage processing according to optimal energy consumption and data effectiveness, wherein the service data after data processing comprises a zone bit of data subpackage; correspondingly, the intelligent terminal is used for: and after receiving the last data packet, sending third response information to the sink node.
Optionally, before the sensing node sends the service data to the aggregation node, the method further includes: and the sink node sends a reporting and testing data instruction to the sensing node.
Optionally, after receiving the service data after data processing and sending the third response information to the sink node, the method further includes: the sink node receives the third response information and sends fourth response information to the sensing node; the sensing node receives the fourth response information and returns third confirmation information to the aggregation node; and the sink node receives the third confirmation information and returns fourth confirmation information to the intelligent terminal.
Optionally, the third acknowledgement information is an empty ACK packet, and the fourth acknowledgement information is an empty ACK packet.
Corresponding to the system, an embodiment of the present invention further provides a power distribution body area network node authentication method, including: s10: deploying a power distribution body area network, wherein the power distribution body area network comprises sensing nodes, aggregation nodes and intelligent terminals; s11: the sensing node sends a registration request of a newly added node to the sink node; s12: the sensing node selects a sink node j closest to the sensing node to send a first registration request according to first notification information returned by the sink node in response to the newly added node registration request; s13: and the sink node j authenticates the sensing node according to the first registration request.
Optionally, S12 includes: s121: the sink node which receives the registration request of the newly added node calculates the distance between the sink node and the sensing node according to the power of a received signal and sends first notification information to the sensing node, wherein the first notification information comprises the distance; s122: and the sensing node receiving the first notification information determines the nearest sink node j according to the distance, and sends a first registration request to the sink node j.
Optionally, S13 includes: s131: the sink node j receives the first registration request and sends a second registration request of the sensing node to the intelligent terminal; s132: the intelligent terminal receives the second registration request and sends first response information to the sink node j; s133: the sink node j receives the first response information and sends second response information to the sensing node; s134: the sensing node receives the second response information and sends content first confirmation information to the sink node j; s135: and the sink node j receives the first confirmation information and returns second confirmation information to the intelligent terminal.
Optionally, the first acknowledgement information is an empty ACK packet; the second acknowledgement information is an empty ACK message.
Optionally, the second registration request includes sensing node key attribute information and sink node key attribute information.
Optionally, the first response information includes a first synchronization instruction, which is used for synchronization confirmation of the sink node j and the intelligent terminal; the second response message includes a second synchronization instruction for synchronization confirmation of the sensing node and the sink node j.
Optionally, the newly added node registration request includes sensing node key attribute information; the first notification information also comprises the key attribute information of the sink node; the first registration request comprises sensing node complete attribute information, and the sensing node complete attribute information comprises the sensing node key attribute information.
Optionally, S12 further includes: and the sensing node marks a sink node which is close to the second as a standby sink node according to the first notification information, and communicates with the standby sink node under the condition that the sink node j cannot communicate.
On the other hand, the invention provides a power distribution body area network node reconfiguration method, wherein the power distribution body area network comprises a sensing node, a sink node and an intelligent terminal, and the method comprises the following steps: s21: the sink node determines that the sensing node h is on line according to the second report information replied by the sensing node h; s22: the sink node sends a reconfiguration request about the sensing node h to the intelligent terminal under the condition that the sink node does not receive the second reported information within a continuous preset time; s23: the intelligent terminal receives the reconfiguration request, judges the running state of the sensing node h and issues a reconnection instruction or a deletion instruction aiming at the sensing node h to the sink node; s24: and the sink node receives an instruction issued by the intelligent terminal and performs reconnection/deletion operation on the sensing node h.
Optionally, before S21, the method further includes S201-S202: s201: the sensing node automatically sends first reporting information to the sink node at regular time, and the first reporting information is used for informing the sink node that the sensing node is online; s202: the method comprises the steps that under the condition that a sink node does not receive first reporting information from a sensing node h within continuous preset times or continuous preset duration, a sensing node state reporting instruction is sent to the sensing node h, and the sensing node h receiving the sensing node state reporting instruction replies second reporting information to inform the sink node that the sensing node h is online.
Optionally, S24 includes S241-S242: s241: the sink node performs reconnection operation on the sensing node h under the condition that the reconnection instruction is received; wherein the reconnecting operation on the sensing node h includes S2410-S2411: s2410: forwarding the reconnection instruction to the sensing node h; s2411: the sensing node h is reconnected with the sink node and keeps on-line state under the condition of receiving the reconnection instruction; s242: and deleting the complete attribute information of the sensing node h by the sink node under the condition that the deleting instruction is received by the sink node, and deleting the key attribute information of the sensing node h by the intelligent terminal.
Optionally, after S241, the method further includes: s25: the sink node sends the sensing node state reporting instruction to the sensing node h; s26: the sensing node h receives the sensing node state reporting instruction and returns third reporting information to the sink node, and the third reporting information is used for informing that the sensing node h is online; s27: and the sink node receiving the third reported information returns reconnection completion information to the intelligent terminal.
Optionally, the first reporting information is a 1-bit flag bit; the second reported information is a 1-bit zone bit; and the reconnection completion information is an empty ACK message.
On the other hand, the invention provides a power distribution body area network node data transmission method, wherein the power distribution body area network comprises a sensing node, a sink node and an intelligent terminal, and the method comprises the following steps: s32: the sensing node sends service data to the aggregation node; s33: the sink node sends the service data to an intelligent terminal after data processing; s34: and the intelligent terminal receives the service data after data processing and sends third response information to the sink node.
Optionally, the data processing includes: removing redundant information, designing data quantity sub-packaging processing according to optimal energy consumption and data effectiveness, and unifying information acquisition protocols of all sensing nodes according to the requirements of the intelligent terminal.
Optionally, S33 includes: under the condition that the data volume of the service data exceeds a threshold value, designing data volume subpackage processing according to optimal energy consumption and data effectiveness, wherein the service data after data processing comprises a zone bit of data subpackage; accordingly, S34: and after receiving the last data sub-packet, the intelligent terminal sends third response information to the sink node.
Optionally, before S32, the method further includes: s31: and the sink node sends a reporting and testing data instruction to the sensing node.
Optionally, after S34, the method further includes: s35: the sink node receives the third response information and sends fourth response information to the sensing node; s36: the sensing node receives the fourth response information and returns third confirmation information to the aggregation node; s37: and the sink node receives the third confirmation information and returns fourth confirmation information to the intelligent terminal.
Optionally, the third acknowledgement information is an empty ACK packet, and the fourth acknowledgement information is an empty ACK packet.
According to the technical scheme, the power distribution body area network of a three-level network system of a sensing node, a sink node and an intelligent terminal is constructed on the basis of existing devices in the power equipment box, the sensing node selects the shortest transmission path to independently send an authentication request by utilizing path propagation loss so as to realize self-organization of the power distribution body area network, a set of effective wireless communication transmission mechanism is provided, and the automation and the intelligent level of power data acquisition, transmission and processing in the totally-closed metal structure power equipment box are facilitated to be improved.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:
FIG. 1 is a block diagram of a power distribution body area network deployed in a power equipment cabinet;
FIG. 2 is an information interaction flow diagram of one embodiment of a power distribution body area network node authentication method;
fig. 3 is an information interaction flow diagram of an embodiment of a power distribution body area network node reconfiguration method;
FIG. 4 is an information interaction flow diagram of one embodiment of a power distribution body area network node data transmission method;
fig. 5 is an information interaction flow diagram of another embodiment of a power distribution body area network node data transmission method.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
The invention relates to a power distribution body area network, which takes backbone nodes of power distribution equipment, branch switches and the like as main nodes and peripheral sensing devices as slave nodes, forms a terminal communication access network taking a power distribution equipment body as an area in a closed small space, realizes short-distance low-power-consumption communication of sensors, intelligent equipment and the like, completes holographic sensing and data acquisition of electrical and environmental parameters, and solves the problem of last several meters of power distribution communication.
The invention provides a power distribution body area network node authentication method, which comprises the following steps of S10-S13:
s10: and deploying a power distribution body area network, wherein the power distribution body area network comprises a sensing node, a sink node and an intelligent terminal.
Reform transform existing distribution equipment in the power equipment box, form tertiary network system, specifically do: the power distribution equipment detection sensor is transformed into a sensing node, backbone nodes such as power distribution equipment and a branch switch are transformed into a convergence node, and the original intelligent terminal is still used as an intelligent terminal. The content of the modification can be protocol modification or structural modification, and the structural modification can be modification of the interface.
The distribution body area network that deploys in the power equipment box is shown in figure 1, and perception node, sink node and intelligent terminal are equallyd divide and are distributed in the power equipment box of full metal enclosed construction, wherein:
sensing nodes: the sensing of state data, environment data and operation data of each power device in the power device box body is realized, and wireless transmission of sensing data is realized through a communication module in the power device box body;
the sink node: the downlink can realize communication, collection and fusion of sensing data from the sensing nodes, and the uplink can support the remote transmission of equipment state data by utilizing the technologies such as power line carrier and the like, 4G/5G wireless communication and the like; the system has independent addresses, has an edge computing function and a protocol conversion function, can realize edge cloud cooperative data distribution of data classification processing, supports issuing of high-real-time power internet of things fault instructions, and automatically and quickly completes field deployment;
the intelligent terminal: the existing power distribution network terminal equipment with edge computing capability can analyze data of the sink node on site, issue a control instruction, upload the data to a power service master station at the cloud end after further fusing, and finally analyze and process sensing data of the sensing node by the service master station.
S11: and the sensing node sends a registration request of the new added node to the sink node.
After the power distribution body area network is deployed in the power equipment box body, the newly added sensing node sends a newly added node registration request to each aggregation node nearby.
The newly added node registration request comprises sensing node key attribute information, and the sensing node key attribute information comprises: the method comprises the steps of sensing node MAC address, sensing node ID, sensing node wireless channel, sensing node wireless address, sensing node transmitting power and used wireless protocol.
S12: and the sensing node selects the sink node j closest to the sensing node to send the first registration request according to the first notification information returned by the sink node in response to the newly added node registration request.
In a preferred embodiment, S12 further includes: S121-S122.
S121: and the sink node which receives the registration request of the newly added node calculates the distance between the sink node and the sensing node according to the received signal power and sends first notification information to the sensing node, wherein the first notification information comprises the distance.
The distance may be calculated by the sink node against a path loss model. The first notification information also comprises sink node key attribute information which can uniquely identify sink nodes, wherein the sink node key attribute information comprises sink node MAC addresses, sink node IDs and sink node IP addresses.
Preferably, in order to ensure the security of the distribution body area network, the sink node needs to verify the sensing node sending the registration request of the newly added node first, and the verification method may be as follows: after receiving the registration request of the newly added node, the aggregation node firstly queries a stored sensing node white list issued by the intelligent terminal, and if the key attribute information of the sensing node can be queried in the white list, the sensing node passes the verification and sends first notification information to the sensing node. If all the nearby aggregation nodes do not inquire the key attribute information of the sensing node in the white list, no reply is made; the sensing node sends a newly added node registration request for the second time, all the aggregation nodes nearby this time judge that a new sensing node which is not listed in the current total white list is accessed, and a white list updating request is sent to the intelligent terminal; and if the key attribute information of the sensing node is not in the white list catalogue managed by the intelligent terminal after the white list is updated, rejecting the access request of the newly added sensing node. The white list at the intelligent terminal is a total list of all sensing nodes allowed to be accessed under the jurisdiction, the white lists stored at the aggregation nodes can have small-range intersection according to the coverage range of the white lists, and the white lists between every two sensing nodes are not identical.
S122: and the sensing node receiving the first notification information determines the nearest sink node j according to the distance, and sends a first registration request to the sink node j.
The first registration request includes sensing node complete attribute information, and the sensing node complete attribute information includes, in addition to the key sensing node attribute information: manufacturer, node model, node type, software/hardware version number.
By selecting the shortest transmission path, on one hand, the power consumption of data transmission can be reduced, and on the other hand, incomplete data transmission or transmission failure caused by shielding of partial signals in remote transmission can be avoided.
Another preferred embodiment that the sensing node selects as the sink node of the uploading interactive node is that the sensing node marks a sink node which is the second closest to the first notification information as a standby sink node according to the first notification information, and communicates with the standby sink node under the condition that the sink node j cannot communicate, so that the reliability of communication can be ensured; and under the condition that the sink node j and the standby sink node can not be connected, the sensing node enters a sleep mode until the sink node j resumes the connection and calls all sensing node states under the jurisdiction to wake up and reenter a service connection mode.
S13: and the sink node j authenticates the sensing node according to the first registration request.
Specifically, the S13 includes S131 to S135:
s131: and the sink node j receives the first registration request and sends a second registration request of the sensing node to the intelligent terminal.
The second registration request comprises the key attribute information of the sensing node and the key attribute information of the aggregation node j.
S132: and the intelligent terminal receives the second registration request and sends first response information to the sink node j.
Preferably, the first response message includes a first synchronization instruction, which is used for synchronization confirmation of the sink node j and the intelligent terminal.
S133: and the sink node j receives the first response information, completes the synchronous confirmation of the sink node j and the intelligent terminal, and sends second response information to the sensing node.
Preferably, the second response message also carries a second synchronization instruction, which is used for synchronization confirmation of the sensing node and the sink node j.
S134: and the sensing node receives the second response information, completes the synchronous confirmation of the sensing node and the sink node j, and sends first confirmation information to the sink node j.
In order to reduce the channel resource occupation, the first acknowledgement information is preferably set as an empty ACK message.
S135: and the sink node j receives the first confirmation information and returns second confirmation information to the intelligent terminal, which indicates that the registration process of the newly added sensing node is completed.
In order to reduce the channel resource occupation, the second acknowledgement information is also preferably set as a null ACK message.
The information interaction flow of S11, S121-S122, and S131-S135 is shown in FIG. 2.
The authentication method of the power distribution body area network nodes abandons the concepts of peer-to-peer communication and mutual position confirmation among short-distance wireless communication technical equipment represented by Bluetooth, endows the sensing nodes with basic comparison functions and sink node edge calculation functions, and utilizes propagation path loss to autonomously select the shortest transmission path by the sensing nodes, thereby establishing a three-level network authentication system of the sensing nodes, the sink nodes and the intelligent terminal and providing an effective communication transmission mechanism for a power equipment box with a totally-closed metal structure. The acknowledgement information is designed to be an empty ACK message, so that occupation of channel resources can be reduced, and compared with the Bluetooth or BLE technology, standby power consumption can be further reduced. Through the design of an authentication mechanism for automatically sending a registration request of a newly added node to a sink node by the newly added sensing node, the self-organization capability of a node network is improved, and the automation and intelligence levels of electric power data acquisition, transmission and processing in an electric power equipment box can be improved.
On the other hand, the invention also provides a power distribution body area network node reconfiguration method, wherein the power distribution body area network comprises the sensing node, the aggregation node and the intelligent terminal. The method comprises the following steps of S21-S24:
s21: and the sink node determines that the sensing node h is on line according to the second report information replied by the sensing node h.
Preferably, before S21, S201-S202 may be further included:
s201: the sensing node automatically sends first reporting information to the aggregation node at regular time, and the first reporting information is used for informing the aggregation node that the sensing node is online.
S202: under the condition that the sink node does not receive first reporting information from a sensing node h within continuous preset times or continuous preset duration, sending a sensing node state reporting instruction to the sensing node h; and sending second reporting information to the sink node by the sensing node h which receives the state instruction of the reporting sensing node, wherein the second reporting information is also used for informing the sink node that the sensing node h is online.
The first reporting information or the second reporting information sent by the sensing node h may be sent together with the service data. The first reporting information and the second reporting information are preferably simplified message contents, and may be 1-bit flag bits, for example, 1 bit such as "1", or empty ACK messages, so that channel resource occupation is reduced and transmission energy consumption of the node is saved by simplifying the message contents.
The preferred embodiments provided by S201-S202 are: in a default working mode, the sensing node automatically sends first reported information at regular time, so that the sink node confirms the online state of the sensing node; and under the condition that the aggregation node does not receive the first reported information, the sensing node sends second reported information to the aggregation node, and the aggregation node decides whether the sensing node is on line or not according to whether the second reported information is received on time or not. The sink node receives the reported data twice and decides whether the sensing node is on line according to the receiving result, so that the decision on the on-line state of the sensing node is more accurate.
S22: and the sink node sends a reconfiguration request about the sensing node h to the intelligent terminal under the condition that the sink node does not receive the second reported information returned by the sensing node h within the continuous preset time.
If the sink node j does not receive the second reporting information returned by the sensing node h within the continuous preset time (such as 48 hours), the sensing node h is considered to be offline, the sensing node h needs to be further processed according to the reason of offline, and a reconfiguration request is sent to the intelligent terminal.
S23: and the intelligent terminal receives the reconfiguration request, judges the running state of the sensing node h and issues a reconnection instruction or a deletion instruction aiming at the sensing node h to the aggregation node.
The sensor node can be offline in two running states: the first method is that the sensing node is disconnected, and then the sensing node is reconnected; and the second method is that if the sensing node fails, the sensing node needs to be deleted, and the sensing node which can normally work is replaced after deletion.
The intelligent terminal can judge the running state of the sensing node according to historical data of the sensing node, and the historical data can include a fault/replacement sensing node directory included in an instruction issued by an upper intelligent terminal (such as a power distribution main station, an internet of things management platform and other business professional management background), or the historical record of quitting/leaving the line executed by the sensing node according to business requirements.
S24: and the sink node receives an instruction issued by the intelligent terminal and performs reconnection/deletion operation on the sensing node h.
Specifically, S24 includes S241-S242:
s241: carrying out reconnection operation on the sensing node h under the condition that the sink node receives the reconnection instruction;
wherein, the reconnecting operation on the sensing node h further comprises S2410-S2411:
s2410: and forwarding the reconnection instruction to the perception node h.
The reconnection instruction comprises a synchronization instruction.
S2411: and the sensing node h is reconnected with the aggregation node and keeps the on-line state under the condition of receiving the reconnection instruction.
S242: and deleting the complete attribute information of the sensing node h by the sink node under the condition that the deleting instruction is received by the sink node, and deleting the key attribute information of the sensing node h by the intelligent terminal.
The deleting instruction comprises a synchronous instruction and is used for enabling the intelligent terminal to operate in a delayed mode and deleting the sensing node information in the registration request sent by the sensing node h together with the sink node, and after the sensing node information is deleted successfully, the sink node is disconnected from the sensing node h, and deleting operation of the sensing node h is completed.
Correspondingly, after the reconnection operation on the sensing node h is completed in S241, whether the reconnection of the sensing node h is successful can be verified according to S25-S27.
S25: and the sink node sends the sensing node state reporting instruction to the sensing node h.
And the reporting sensing node state instruction is used for acquiring the state information of the sensing node h after reconnection.
S26: and the sensing node h receives the sensing node state reporting instruction and returns third reporting information to the sink node, so as to inform the sensing node h of being online.
And if the sink node receives the third report information returned by the sensing node h, the sensing node h and the sink node are successfully reconnected.
The third reporting information may be a 1-bit flag bit or an empty ACK message, so as to reduce channel resource occupation.
S27: and the sink node receiving the third reported information returns reconnection completion information to the intelligent terminal.
The intelligent terminal confirms that the reconnection with the sensing node h is successful, and the reconnection completion information can be defined as an empty ACK message.
The information interaction flows of S201-S202, S21-S23, S2410-S2411 and S25-S27 are shown in FIG. 3.
According to the power distribution body area network node reconfiguration method, the sink node decides whether the sensing node is on line or not according to whether the second report information is received on time or not, and executes reconnection/deletion operation on the sensing node according to an off-line reason under the condition that the sensing node is off line, so that the self-management capability of power distribution equipment in the body area network is further improved, and the fault rate of the power distribution body area network equipment is reduced.
On the other hand, the invention also provides a data transmission method for the network nodes of the power distribution body area network, wherein the power distribution body area network comprises sensing nodes, aggregation nodes and intelligent terminals, and the method comprises the following steps:
s32: and the sensing node sends the service data to the aggregation node.
The service data is automatically acquired by the sensing node, the sensing node can monitor whether data is sent in the channel before sending the service data, and if no data is sent, the sensing node randomly backs off for a period of time and then sends the service data.
The step of S32 is that the sensing node automatically collects and sends service data, and certainly, the sensing node may also send the summoning data required by the summoning instruction after receiving the summoning instruction from the sink node, where the summoning data belongs to one of the service data; that is, before S32, S31 is executed: and the sink node sends a report summoning data instruction to the sensing node. The sensing node receiving the instruction can return instruction receiving confirmation information to the sink node, and the instruction indicates that the reported test data instruction is received, and the information content is only an empty ACK message. After the preparation of the summoning data is completed, S32 is executed, and the service data in S32 is specifically the summoning data. The instruction for reporting the summoned test data is generally generated by the sink node according to the summoned test instruction from the intelligent terminal, or the instruction for reporting the summoned test data can be sent to the sensing node when the sink node finds that a certain moment or a certain item of data is missed within a preset period (the preset period is within a data storage time limit which can be accommodated in a storage space of the sensing node).
One mode of operation that conserves power and transmission resources may be: under the condition that the sensing node automatically collects and sends data, the sink node does not need to confirm and reply the service data automatically sent by the sensing node. The sensing node sends data and the sink node receives data, the sink node is in a passive waiting receiving state most of time in the interaction process of the two stages of nodes, and the sensing node is required to firstly confirm that a reported summoning data instruction is received only under the condition that the sink node actively sends the reported summoning data instruction to the sensing node when the sink node receives the summoning instruction from the intelligent terminal or the data is missed.
S33: and the sink node sends the service data to the intelligent terminal after data processing. The data processing content comprises: removing redundant information, designing data quantity sub-packaging processing according to optimal energy consumption and data effectiveness, and unifying information acquisition protocols of all sensing nodes according to the requirements of the intelligent terminal.
The unified information acquisition protocol is used for extracting effective data in service data and integrating the effective data into a message of a certain information acquisition protocol specified by the intelligent terminal on the basis of receiving the service data generated according to different information acquisition protocols from all the sensing nodes. By unifying the information acquisition protocol, the time required by the intelligent terminal for processing data can be reduced, and the access of a heterogeneous network can be supported.
Preferably, when the data amount of the service data exceeds the threshold, the data amount packetizing in the data processing in S33 includes: and designing data quantity subpackage processing according to the optimal energy consumption and data effectiveness, wherein service data subjected to subpackage processing comprises a zone bit of data subpackage.
S34: and the intelligent terminal receives the service data after data processing, and sends third response information to the sink node to indicate that the service data is received completely.
The third response message is preferably an empty ACK message.
In S33, if the data amount packetization processing is executed, S34 is: and after receiving the last data sub-packet, the intelligent terminal sends third response information to the sink node.
The information interaction flow of S32-S34 is shown in FIG. 4. S32-S34 are the simplest flow of data transmission, and can reduce the energy consumption of the distribution body area network.
On the basis of S32-S34, the information confirmation process can be further perfected, and besides the step of S31, the method can also comprise the steps of S35-S37 after S34:
s35: and the sink node receives the third response message and sends a fourth response message to the sensing node, which indicates that the service data is received and can continue to collect, arrange and prepare the service data.
S36: and the sensing node receives the fourth response information and returns third confirmation information to the aggregation node. The third acknowledgement information is preferably an empty ACK message.
S37: and the sink node receives the third confirmation information and returns fourth confirmation information to the intelligent terminal to indicate that the service data transmission is completed. The fourth acknowledgement information is an empty ACK message.
The information interaction process of S31-S37 is shown in FIG. 5.
According to the power distribution body area network node data transmission method, the sensing node automatically sends the service data, or the sink node sends a reported test data instruction before, so that the automation level of power data acquisition is improved; and when the data volume exceeds the threshold value, the data is subjected to sub-packet processing, the probability of data omission and transmission failure is reduced, the time required by the intelligent terminal for processing the data can be reduced by unifying the information acquisition protocol, and the access of a heterogeneous network can be supported.
It should be noted that, in this document, the first acknowledgement information, the second acknowledgement information, the first reporting information, the second reporting information, the third response information, the third acknowledgement information, the fourth acknowledgement information, and the like, are messages sent when a response (such as authentication, reconfiguration, and ending of data packet transmission) is required, and are used to confirm that the related information is received correctly, and the empty ACK message sent by the messages can be replaced with similar simplified message contents such as a 1-bit flag bit, so as to reduce channel resource occupation and save transmission energy consumption of the node.
Corresponding to the power distribution body area network node authentication method, the invention also provides a power distribution body area network node authentication system, which comprises a sensing node, a sink node and an intelligent terminal, wherein a power distribution body area network structure diagram of the system deployed in a power equipment box is shown in figure 1; the sensing node is configured to: sending a registration request of a newly added node to a sink node; selecting a sink node j closest to the sink node to send a first registration request according to first notification information returned by the sink node in response to the newly added node registration request; the sink node j is configured to: and authenticating the sensing node according to the first registration request.
The newly added node registration request comprises sensing node key attribute information, and the sensing node key attribute information comprises: the method comprises the steps of sensing node MAC address, sensing node ID, sensing node wireless channel, sensing node wireless address, sensing node transmitting power and used wireless protocol.
In a preferred embodiment, the sensing node selects a sink node j closest to the sensing node to send a first registration request according to first notification information returned by the sink node in response to the newly added node registration request, and includes steps (1) to (2):
(1) the sink node which receives the registration request of the newly added node calculates the distance between the sink node and the sensing node according to the power of a received signal and sends first notification information to the sensing node, wherein the first notification information comprises the distance;
the distance may be calculated by the sink node against a path loss model. The first notification information also comprises sink node key attribute information which can uniquely identify sink nodes, wherein the sink node key attribute information comprises sink node MAC addresses, sink node IDs and sink node IP addresses.
(2) The sensing node receiving the first notification information determines a nearest sink node j according to the distance, and sends a first registration request to the sink node j;
the first registration request includes sensing node complete attribute information, and the sensing node complete attribute information includes, in addition to the key sensing node attribute information: manufacturer, node model, node type, software/hardware version number.
By selecting the shortest transmission path, on one hand, the power consumption of data transmission can be reduced, and on the other hand, incomplete data transmission or transmission failure caused by shielding of partial signals in remote transmission can be avoided.
Another preferred embodiment of selecting the sensing node as the sink node of the uploading interactive node is that the sensing node marks a sink node which is the second closest to the sensing node as a standby sink node according to the first notification information, and communicates with the standby sink node under the condition that the sink node j cannot communicate, so that the reliability of communication can be ensured.
Specifically, the sink node j authenticates the sensor node according to the first registration request, and may preferably include steps (a) to (e):
(a) the sink node j receives the first registration request and sends a second registration request of the sensing node to the intelligent terminal;
the second registration request comprises the key attribute information of the sensing node and the key attribute information of the aggregation node j.
(b) The intelligent terminal receives the second registration request and sends first response information to the sink node j;
preferably, the first response message includes a first synchronization instruction, which is used for synchronization confirmation of the sink node j and the intelligent terminal.
(c) The sink node j receives the first response information and sends second response information to the sensing node;
preferably, the second response message also carries a second synchronization instruction, which is used for synchronization confirmation of the sensing node and the sink node j.
(d) And the sensing node receives the second response information and sends content first confirmation information to the sink node j, and the first confirmation information is preferably set as an empty ACK message in order to reduce channel resource occupation.
(e) And the sink node j receives the first confirmation information and returns second confirmation information to the intelligent terminal, which indicates that the registration process of the newly added sensing node is completed, and the second confirmation information is preferably set as an empty ACK message in order to reduce the channel resource occupation.
The power distribution body area network node authentication system abandons the concepts of peer-to-peer communication and mutual position confirmation among short-distance wireless communication technical equipment represented by Bluetooth, endows the sensing node with a basic comparison function and a sink node edge calculation function, and utilizes the propagation path loss to autonomously select the shortest transmission path by the sensing node, thereby establishing a three-level network authentication system of the sensing node, the sink node and an intelligent terminal and providing an effective communication transmission mechanism for a power equipment box with a totally-closed metal structure. The acknowledgement information is designed to be an empty ACK message, so that occupation of channel resources can be reduced, and compared with the Bluetooth or BLE technology, standby power consumption can be further reduced. Through the design of an authentication mechanism for automatically sending a registration request of a newly added node to a sink node by the newly added sensing node, the self-organization capability of a node network is improved, and the automation and intelligence levels of electric power data acquisition, transmission and processing in an electric power equipment box can be improved.
On the other hand, the invention also provides a power distribution body area network node reconfiguration system corresponding to the power distribution body area network node reconfiguration method, wherein the system comprises a sensing node, a sink node and an intelligent terminal. The sink node is configured to: determining that the sensing node h is on line according to second reported information replied by the sensing node h; sending a reconfiguration request about the sensing node h to the intelligent terminal under the condition that the second reported information is not received within the continuous preset time length; the intelligent terminal is used for: receiving the reconfiguration request, judging the running state of the sensing node h, and issuing a reconnection instruction or a deletion instruction aiming at the sensing node h to the sink node; the sink node is further configured to: and receiving an instruction issued by the intelligent terminal, and performing reconnection/deletion operation on the sensing node h.
In a preferred embodiment, before the sink node determines that the sensing node h is online according to the second reporting information replied by the sensing node h, the method further comprises the steps (3) - (4)
(3) The sensing node automatically sends first reporting information to the aggregation node at regular time, and the first reporting information is used for informing the aggregation node that the sensing node is online.
(4) Under the condition that the sink node does not receive first reporting information from a sensing node h within continuous preset times or continuous preset duration, sending a sensing node state reporting instruction to the sensing node h; and sending second reporting information to the sink node by the sensing node h which receives the state instruction of the reporting sensing node, wherein the second reporting information is also used for informing the sink node that the sensing node h is online.
The first reporting information or the second reporting information sent by the sensing node h may be sent together with the service data. The first reporting information and the second reporting information are preferably simplified message contents, and may be 1-bit flag bits, for example, 1 bit such as "1", or empty ACK messages, so that channel resource occupation is reduced and transmission energy consumption of the node is saved by simplifying the message contents.
The preferred embodiments provided in steps (3) to (4) are: in a default working mode, the sensing node automatically sends first reported information at regular time, so that the sink node confirms the online state of the sensing node; and under the condition that the aggregation node does not receive the first reported information, the sensing node sends second reported information to the aggregation node, and the aggregation node decides whether the sensing node is on line or not according to whether the second reported information is received on time or not. The sink node receives the reported data twice and decides whether the sensing node is on line according to the receiving result, so that the decision on the on-line state of the sensing node is more accurate.
If the sink node j does not receive the second reporting information returned by the sensing node h within the continuous preset time (such as 48 hours), the sensing node h is considered to be offline, the sensing node h needs to be further processed according to the reason of offline, and a reconfiguration request is sent to the intelligent terminal.
And after receiving the reconfiguration request, the intelligent terminal judges the running state of the sensing node according to the reconfiguration request and issues a reconnection instruction or a deletion instruction aiming at the sensing node h to the sink node.
The sensor node can be offline in two running states: the first method is that the sensing node is disconnected, and then the sensing node is reconnected; and the second method is that if the sensing node fails, the sensing node needs to be deleted, and the sensing node which can normally work is replaced after deletion.
The intelligent terminal can judge the running state of the sensing node according to historical data of the sensing node, and the historical data can include a fault/replacement sensing node directory included in an instruction issued by an upper intelligent terminal (such as a power distribution main station, an internet of things management platform and other business professional management background), or the historical record of quitting/leaving the line executed by the sensing node according to business requirements.
And then the sink node receives an instruction issued by the intelligent terminal and performs reconnection/deletion operation on the perception node h, wherein the method comprises the following steps of (f) - (g):
(f) the sink node performs reconnection operation on the sensing node h under the condition that the reconnection instruction is received;
wherein the reconnecting operation on the sensing node h further comprises steps (f 1) - (f 2):
(f1) forwarding the reconnection instruction to the sensing node h;
the reconnection instruction comprises a synchronization instruction.
(f2) And the sensing node h is reconnected with the aggregation node and keeps the on-line state under the condition of receiving the reconnection instruction.
(g) And deleting the complete attribute information of the sensing node h by the sink node under the condition that the deleting instruction is received by the sink node, and deleting the key attribute information of the sensing node h by the intelligent terminal.
The deleting instruction comprises a synchronous instruction and is used for enabling the intelligent terminal to operate in a delayed mode and deleting the sensing node information in the registration request sent by the sensing node h together with the sink node, and after the sensing node information is deleted successfully, the sink node is disconnected from the sensing node h, and deleting operation of the sensing node h is completed.
Correspondingly, after the reconnection operation on the sensing node h is completed in the step (f), whether the reconnection of the sensing node h is successful can be verified according to the steps (h) - (j).
(h) And the sink node sends the sensing node state reporting instruction to the sensing node h.
And the reporting sensing node state instruction is used for acquiring the state information of the sensing node h after reconnection.
(i) And the sensing node h receives the sensing node state reporting instruction and returns third reporting information to the sink node, so as to inform the sensing node h of being online.
And if the sink node receives the third report information returned by the sensing node h, the sensing node h and the sink node are successfully reconnected.
The third reporting information may be a 1-bit flag bit or an empty ACK message, so as to reduce channel resource occupation.
(j) And the sink node receives the third reporting information and returns reconnection completion information to the intelligent terminal.
The intelligent terminal confirms that the reconnection with the sensing node h is successful, and the reconnection completion information can be defined as an empty ACK message.
According to the power distribution body area network node reconfiguration system, the sink node decides whether the sensing node is on line or not according to whether the second reported information is received on time or not, and executes reconnection/deletion operation on the sensing node according to an off-line reason under the condition that the sensing node is off line, so that the self-management capability of power distribution equipment in the body area network is further improved, and the fault rate of the power distribution body area network equipment is reduced.
On the other hand, corresponding to the power distribution body area network node data transmission method, the application also provides a power distribution body area network node data transmission system, and the system comprises a sensing node, a sink node and an intelligent terminal; the sensing node is configured to: sending service data to the sink node; the sink node is configured to: the service data is sent to the intelligent terminal after being subjected to data processing; the intelligent terminal is used for: and receiving the service data after data processing, and sending third response information to the sink node.
The service data is automatically acquired by the sensing node, the sensing node can monitor whether data is sent in the channel before sending the service data, and if no data is sent, the sensing node randomly backs off for a period of time and then sends the service data.
Except that the sensing node automatically collects and sends the service data, the sensing node can also send the test data required by the test instruction after receiving the test instruction from the sink node, wherein the test data belongs to one of the service data; that is, before the sensing node sends service data to the aggregation node, the following steps are executed: and the sink node sends a report summoning data instruction to the sensing node. The sensing node receiving the instruction can return instruction receiving confirmation information to the sink node, and the instruction indicates that the reported test data instruction is received, and the information content is only an empty ACK message. And after the preparation of the summoning data is completed, sending the summoning data to the sink node. The instruction for reporting the summoned test data is generally generated by the sink node according to the summoned test instruction from the intelligent terminal, or the instruction for reporting the summoned test data can be sent to the sensing node when the sink node finds that a certain moment or a certain item of data is missed within a preset period (the preset period is within a data storage time limit which can be accommodated in a storage space of the sensing node).
The content of the service data processed by the aggregation node comprises: removing redundant information, designing data quantity sub-packaging processing according to optimal energy consumption and data effectiveness, and unifying information acquisition protocols of all sensing nodes according to the requirements of the intelligent terminal.
Preferably, when the data amount of the service data exceeds a threshold, the data amount packetizing in the data processing includes: and designing data quantity subpackage processing according to the optimal energy consumption and data effectiveness, wherein service data subjected to subpackage processing comprises a zone bit of data subpackage.
And if the sink node executes data volume subpackage processing, correspondingly, the intelligent terminal sends third response information to the sink node after receiving the last data subpackage, and the third response information indicates that the service data is received completely.
In order to further improve the information confirmation process, after the intelligent terminal sends the third response information to the sink node, the method further comprises the following steps:
(k) and the sink node receives the third response message and sends a fourth response message to the sensing node, which indicates that the service data is received and can continue to collect, arrange and prepare the service data.
(l) And the sensing node receives the fourth response information and returns third confirmation information to the aggregation node. The third acknowledgement information is preferably an empty ACK message.
(m) the sink node receives the third confirmation information, and returns fourth confirmation information to the intelligent terminal, which indicates that the service data transmission is completed. The fourth acknowledgement information is an empty ACK message.
The power distribution body area network node data transmission system automatically sends service data through the sensing node or sends a reported test data instruction before the gathering node, so that the automation level of power data acquisition is improved; and when the data volume exceeds the threshold value, the data is subjected to sub-packet processing, the probability of data omission and transmission failure is reduced, the time required by the intelligent terminal for processing the data can be reduced by unifying the information acquisition protocol, and the access of a heterogeneous network can be supported.
Since the power distribution body area network node authentication system, the reconfiguration system and the data transmission system correspond to the power distribution body area network node authentication method, the reconfiguration method and the data transmission method one by one, other preferred embodiments and beneficial effects of the system are described in the method embodiment.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (36)

1. A power distribution body area network node authentication system is characterized by comprising a sensing node, a sink node and an intelligent terminal;
the sensing node is configured to:
sending a registration request of a newly added node to a sink node; and
selecting a sink node j closest to the sink node to send a first registration request according to first notification information returned by the sink node in response to the newly added node registration request;
the sink node j is configured to: authenticating the sensing node according to the first registration request, including:
the sink node j receives the first registration request and sends a second registration request of the sensing node to the intelligent terminal;
the intelligent terminal receives the second registration request and sends first response information to the sink node j;
the sink node j receives the first response information and sends second response information to the sensing node;
the sensing node receives the second response information and sends content first confirmation information to the sink node j;
and the sink node j receives the first confirmation information and returns second confirmation information to the intelligent terminal.
2. The distribution body area network node authentication system as claimed in claim 1, wherein said selecting the aggregation node j closest to the aggregation node to send the first registration request according to the first notification information returned by the aggregation node in response to the new addition node registration request comprises:
the sink node which receives the registration request of the newly added node calculates the distance between the sink node and the sensing node according to the power of a received signal and sends first notification information to the sensing node, wherein the first notification information comprises the distance;
and the sensing node receiving the first notification information determines the nearest sink node j according to the distance, and sends a first registration request to the sink node j.
3. The power distribution body area network node authentication system of claim 1,
the first acknowledgement information is an empty ACK message;
the second acknowledgement information is an empty ACK message.
4. The distribution body area network node authentication system of claim 1, wherein the second registration request includes sensing node key attribute information and aggregation node key attribute information.
5. The power distribution body area network node authentication system of claim 1,
the first response information comprises a first synchronization instruction used for synchronous confirmation of the sink node j and the intelligent terminal;
the second response message includes a second synchronization instruction for synchronization confirmation of the sensing node and the sink node j.
6. The power distribution body area network node authentication system of claim 1,
the newly added node registration request comprises sensing node key attribute information;
the first notification information also comprises the key attribute information of the sink node;
the first registration request comprises sensing node complete attribute information, and the sensing node complete attribute information comprises the sensing node key attribute information.
7. The power distribution body area network node authentication system of claim 1, wherein the aware node is further configured to: and marking the sink node which is close to the second as a standby sink node according to the first notification information, and communicating with the standby sink node under the condition that the sink node j cannot communicate.
8. The power distribution body area network node authentication system of claim 1,
the sink node is further configured to:
determining that the sensing node h is on line according to second reported information replied by the sensing node h;
sending a reconfiguration request about the sensing node h to the intelligent terminal under the condition that the second reported information is not received within the continuous preset time length;
the intelligent terminal is also used for: receiving the reconfiguration request, judging the running state of the sensing node h, and issuing a reconnection instruction or a deletion instruction aiming at the sensing node h to the sink node;
the sink node is further configured to: and receiving an instruction issued by the intelligent terminal, and performing reconnection/deletion operation on the sensing node h.
9. The power distribution body area network node authentication system according to claim 8, wherein before determining that the sensing node h is online according to the second report information replied by the sensing node h, the system further comprises:
the sensing node automatically sends first reporting information to the sink node at regular time, and the first reporting information is used for informing the sink node that the sensing node is online;
the method comprises the steps that under the condition that a sink node does not receive first reporting information from a sensing node h within continuous preset times or continuous preset duration, a sensing node state reporting instruction is sent to the sensing node h, and the sensing node h receiving the sensing node state reporting instruction replies second reporting information to inform the sink node that the sensing node h is online.
10. The distribution body area network node authentication system according to claim 9, wherein the receiving of the instruction from the intelligent terminal to reconnect/delete the sensing node h comprises:
the sink node performs reconnection operation on the sensing node h under the condition that the reconnection instruction is received;
the sink node deletes the complete attribute information of the sensing node h under the condition that the sink node receives the deletion instruction, and the intelligent terminal deletes the key attribute information of the sensing node h;
wherein the reconnecting the sensing node h comprises:
forwarding the reconnection instruction to the sensing node h;
and the sensing node h is reconnected with the aggregation node and keeps the on-line state under the condition of receiving the reconnection instruction.
11. The distribution body area network node authentication system according to claim 10, wherein the sink node, after performing reconnection operation on the sensing node h upon receiving the reconnection instruction, further comprises:
the sink node sends the sensing node state reporting instruction to the sensing node h;
the sensing node h receives the sensing node state reporting instruction and returns third reporting information to the sink node, and the third reporting information is used for informing that the sensing node h is online;
and the sink node receives the third reporting information and returns reconnection completion information to the intelligent terminal.
12. The power distribution body area network node authentication system of claim 11,
the first reported information is a 1-bit zone bit;
the second reported information is a 1-bit zone bit;
and the reconnection completion information is an empty ACK message.
13. The power distribution body area network node authentication system of claim 1,
the sensing node is further configured to: sending service data to the sink node;
the sink node is further configured to: the service data is sent to the intelligent terminal after being processed;
the intelligent terminal is also used for: and receiving the service data after data processing, and sending third response information to the sink node.
14. The power distribution body area network node authentication system of claim 13, wherein the data processing comprises: removing redundant information, designing data quantity sub-packaging processing according to optimal energy consumption and data effectiveness, and unifying information acquisition protocols of all sensing nodes according to the requirements of the intelligent terminal.
15. The power distribution body area network node authentication system of claim 14,
the sink node is configured to: under the condition that the data volume of the service data exceeds a threshold value, designing data volume subpackage processing according to optimal energy consumption and data effectiveness, wherein the service data after data processing comprises a zone bit of data subpackage;
correspondingly, the intelligent terminal is used for: and after receiving the last data packet, sending third response information to the sink node.
16. The distribution body area network node authentication system of claim 13, wherein before the sensing node sends the traffic data to the aggregation node, the system further comprises:
and the sink node sends a reporting and testing data instruction to the sensing node.
17. The distribution body area network node authentication system of claim 13, wherein after receiving the service data after data processing and sending a third response message to the sink node, the system further comprises:
the sink node receives the third response information and sends fourth response information to the sensing node;
the sensing node receives the fourth response information and returns third confirmation information to the aggregation node;
and the sink node receives the third confirmation information and returns fourth confirmation information to the intelligent terminal.
18. The distribution body area network node authentication system of claim 17, wherein the third acknowledgement message is a null ACK message and the fourth acknowledgement message is a null ACK message.
19. A power distribution body area network node authentication method is characterized by comprising the following steps:
s10: deploying a power distribution body area network, wherein the power distribution body area network comprises sensing nodes, aggregation nodes and intelligent terminals;
s11: the sensing node sends a registration request of a newly added node to the sink node;
s12: the sensing node selects a sink node j closest to the sensing node to send a first registration request according to first notification information returned by the sink node in response to the newly added node registration request;
s13: the authentication of the sensing node by the sink node j according to the first registration request comprises the following steps:
s131: the sink node j receives the first registration request and sends a second registration request of the sensing node to the intelligent terminal;
s132: the intelligent terminal receives the second registration request and sends first response information to the sink node j;
s133: the sink node j receives the first response information and sends second response information to the sensing node;
s134: the sensing node receives the second response information and sends content first confirmation information to the sink node j;
s135: and the sink node j receives the first confirmation information and returns second confirmation information to the intelligent terminal.
20. The power distribution body area network node authentication method of claim 19, wherein S12 comprises:
s121: the sink node which receives the registration request of the newly added node calculates the distance between the sink node and the sensing node according to the power of a received signal and sends first notification information to the sensing node, wherein the first notification information comprises the distance;
s122: and the sensing node receiving the first notification information determines the nearest sink node j according to the distance, and sends a first registration request to the sink node j.
21. The power distribution body area network node authentication method of claim 19,
the first acknowledgement information is an empty ACK message;
the second acknowledgement information is an empty ACK message.
22. The power distribution body area network node authentication method of claim 19,
the second registration request comprises sensing node key attribute information and aggregation node key attribute information.
23. The power distribution body area network node authentication method of claim 19,
the first response information comprises a first synchronization instruction used for synchronous confirmation of the sink node j and the intelligent terminal;
the second response message includes a second synchronization instruction for synchronization confirmation of the sensing node and the sink node j.
24. The power distribution body area network node authentication method of claim 19,
the newly added node registration request comprises sensing node key attribute information;
the first notification information also comprises the key attribute information of the sink node;
the first registration request comprises sensing node complete attribute information, and the sensing node complete attribute information comprises the sensing node key attribute information.
25. The power distribution body area network node authentication method of claim 19, wherein S12 further comprises:
and the sensing node marks a sink node which is close to the second as a standby sink node according to the first notification information, and communicates with the standby sink node under the condition that the sink node j cannot communicate.
26. The electrical distribution body area network node authentication method of claim 19, further comprising reconfiguring an electrical distribution body area network node, comprising:
s21: the sink node determines that the sensing node h is on line according to the second reported information replied by the sensing node h;
s22: the sink node sends a reconfiguration request about the sensing node h to the intelligent terminal under the condition that the sink node does not receive the second reported information within a continuous preset time;
s23: the intelligent terminal receives the reconfiguration request, judges the running state of the sensing node h and issues a reconnection instruction or a deletion instruction aiming at the sensing node h to the sink node;
s24: and the sink node receives an instruction issued by the intelligent terminal and performs reconnection/deletion operation on the sensing node h.
27. The power distribution body area network node authentication method of claim 26, further comprising, before S21, S201-S202:
s201: the sensing node automatically sends first reporting information to the aggregation node at regular time, and the first reporting information is used for informing the aggregation node that the sensing node is online;
s202: and under the condition that the aggregation node does not receive the first reporting information from the sensing node h within the continuous preset times or the continuous preset duration, sending a sensing node state reporting instruction to the sensing node h, and replying second reporting information by the sensing node h receiving the sensing node state reporting instruction so as to inform the aggregation node that the sensing node h is online.
28. The power distribution body area network node authentication method of claim 27, wherein S24 includes S241-S242:
s241: the sink node performs reconnection operation on the sensing node h under the condition that the reconnection instruction is received;
wherein the reconnecting operation on the sensing node h includes S2410-S2411:
s2410: forwarding the reconnection instruction to the sensing node h;
s2411: the sensing node h is reconnected with the sink node and keeps on-line state under the condition of receiving the reconnection instruction;
s242: and deleting the complete attribute information of the sensing node h by the sink node under the condition that the deleting instruction is received by the sink node, and deleting the key attribute information of the sensing node h by the intelligent terminal.
29. The power distribution body area network node authentication method of claim 28, further comprising, after S241:
s25: the sink node sends the sensing node state reporting instruction to the sensing node h;
s26: the sensing node h receives the sensing node state reporting instruction and returns third reporting information to the sink node, and the third reporting information is used for informing that the sensing node h is online;
s27: and the sink node receiving the third reported information returns reconnection completion information to the intelligent terminal.
30. The power distribution body area network node authentication method of claim 29,
the first reported information is a 1-bit zone bit;
the second reported information is a 1-bit zone bit;
and the reconnection completion information is an empty ACK message.
31. The power distribution body area network node authentication method of claim 19, further comprising:
s32: the sensing node sends service data to the aggregation node;
s33: the sink node sends the service data to the intelligent terminal after data processing;
s34: and the intelligent terminal receives the service data after data processing and sends third response information to the sink node.
32. The power distribution body area network node authentication method as claimed in claim 31, wherein the data processing comprises: removing redundant information, designing data quantity sub-packaging processing according to optimal energy consumption and data effectiveness, and unifying information acquisition protocols of all sensing nodes according to the requirements of the intelligent terminal.
33. The power distribution body area network node authentication method of claim 32, wherein S33 comprises:
under the condition that the data volume of the service data exceeds a threshold value, designing data volume subpackage processing according to optimal energy consumption and data effectiveness, wherein the service data after data processing comprises a zone bit of data subpackage; accordingly, S34: and after receiving the last data sub-packet, the intelligent terminal sends third response information to the sink node.
34. The power distribution body area network node authentication method of claim 31, further comprising, before S32:
s31: and the sink node sends a reporting and testing data instruction to the sensing node.
35. The power distribution body area network node authentication method of claim 31, further comprising after S34:
s35: the sink node receives the third response information and sends fourth response information to the sensing node;
s36: the sensing node receives the fourth response information and returns third confirmation information to the aggregation node;
s37: and the sink node receives the third confirmation information and returns fourth confirmation information to the intelligent terminal.
36. The distribution body area network node authentication method of claim 35, wherein the third acknowledgement message is a null ACK message and the fourth acknowledgement message is a null ACK message.
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