CN113259887A - Power distribution body area network and transmission method thereof - Google Patents
Power distribution body area network and transmission method thereof Download PDFInfo
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- CN113259887A CN113259887A CN202110432181.5A CN202110432181A CN113259887A CN 113259887 A CN113259887 A CN 113259887A CN 202110432181 A CN202110432181 A CN 202110432181A CN 113259887 A CN113259887 A CN 113259887A
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
- H04W28/065—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information using assembly or disassembly of packets
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- 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
- H04W40/04—Communication route or path selection, e.g. power-based or shortest path routing based on wireless node resources
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- H—ELECTRICITY
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- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/11—Allocation or use of connection identifiers
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Abstract
The embodiment of the invention provides a power distribution body area network and a transmission method thereof, belonging to the technical field of communication. The power distribution body area network includes: the system comprises a super node and at least one sensing node, wherein the super node is arranged in an intelligent terminal and used for generating a sensing node ID corresponding to the connected sensing node when each sensing node in the at least one sensing node is connected to the super node for the first time and sending the corresponding sensing node ID and the super node ID to the connected sensing node; each sensing node in the at least one sensing node is used for receiving the corresponding sensing node ID and the super node ID, and when data is transmitted, the data to be transmitted, the corresponding sensing node ID and the super node ID form a data frame to be transmitted to the super node. The power distribution body area network and the transmission method thereof can reduce cost and increase data transmission efficiency.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a power distribution body area network and a transmission method thereof.
Background
Traditionally, a body area network is a basic technology for monitoring and recording human health information, and is a wireless communication network system which takes devices around a human body, such as a smart watch, a human health index monitoring sensor, a smart phone and the like, and devices implanted in the human body and the like as objects. In the field of power distribution internet of things, monitoring of common equipment is achieved through a wired or internet of things sensor network and an external wireless base station, data collected by sensor nodes are transmitted to an intelligent terminal in a forwarding mode through the external base station, and then the data are transmitted to a master station through a remote communication module of the intelligent terminal, such as a GPRS communication module and a 4G communication module. The networking mode is simple, and the data acquired by the sensor nodes can be directly forwarded to the intelligent terminal through the base station route.
At present, in the distribution thing networking application process, the collection of parameter data needs multiple sensor to pass through wireless communication's mode with data transmission to intelligent terminal, and rethread intelligent terminal carries out local edge calculation and upwards delivers to platforms such as thing allies oneself with management platform, distribution automation main website.
In the prior art, the problem of hardware cost increase caused by external base stations exists, and in addition, a wireless sensor network generally comprises a sensor node (sensor node), a sink node (sink node) and a management node. The data route between the star-structured nodes directly forwarded by the sensor nodes through the base station has only one path, the networking and data transmission efficiency is low, the base station becomes the bottleneck of the whole network, and developers need to do more work in an application layer.
Disclosure of Invention
An object of the embodiments of the present invention is to provide a power distribution body area network and a transmission method thereof, which can reduce cost and increase data transmission efficiency.
In order to achieve the above object, an embodiment of the present invention provides a power distribution body area network, including: the system comprises a super node and at least one sensing node, wherein the super node is arranged in an intelligent terminal and used for generating a sensing node ID corresponding to the connected sensing node when each sensing node in the at least one sensing node is connected to the super node for the first time and sending the corresponding sensing node ID and the super node ID to the connected sensing node; each sensing node in the at least one sensing node is used for receiving the corresponding sensing node ID and the super node ID, and when data is transmitted, the data to be transmitted, the corresponding sensing node ID and the super node ID form a data frame to be transmitted to the super node.
Preferably, the data frame includes a frame header, a destination address, a source address, a data field, and a frame tail, and when each sensing node transmits data, the frame header and the frame tail fill preset bytes, the destination address fills the super node ID, the source address fills the corresponding sensing node ID, and the data field fills the data to be transmitted.
Preferably, the data frame further includes an identification field, when the first sensing node cannot be connected to the super node, the first sensing node is further configured to send a data frame whose data field is to be transmitted, the data frame whose identification field is 0 is sent to the second sensing node, the second sensing node sends a data frame whose data field is received from the first sensing node, and the data frame whose identification field is 1 is sent to the super node.
Preferably, when a first sensing node cannot be connected to the supernode, the first sensing node is configured to send a forwarding request to other sensing nodes, and forward data through a first replied sensing node.
Preferably, the sensing node ID includes: at least one of a sequence number, a super node number, and an auto-increment value is randomly generated.
The embodiment of the invention also provides a transmission method of the power distribution body area network, the power distribution body area network comprises a super node and at least one sensing node, the super node is arranged in the intelligent terminal, and the method comprises the following steps: the super node generates a sensing node ID corresponding to the connected sensing node when each sensing node in the at least one sensing node is connected to the super node for the first time, and sends the corresponding sensing node ID and the super node ID to the connected sensing node; and each sensing node in the at least one sensing node receives the corresponding sensing node ID and the super node ID, and forms a data frame by the data to be transmitted, the corresponding sensing node ID and the super node ID when transmitting the data, and transmits the data frame to the super node.
Preferably, the data frame includes a frame header, a destination address, a source address, a data field, and a frame tail, and when each sensing node transmits data, the frame header and the frame tail fill preset bytes, the destination address fills the super node ID, the source address fills the corresponding sensing node ID, and the data field fills the data to be transmitted.
Preferably, the data frame further includes an identification field, and the method further includes: when a first sensing node cannot be connected to the super node, the first sensing node sends a data frame with a data field of data to be transmitted and a mark field of 0 to a second sensing node; and the second sensing node sends a data frame with a data field of 1 to the super node, wherein the data frame is received from the first sensing node.
Preferably, the method further comprises: when a first sensing node cannot be connected to the super node, the first sensing node sends a forwarding request to other sensing nodes, and forwards data through a first replied sensing node.
Preferably, the sensing node ID includes: at least one of a sequence number, a super node number, and an auto-increment value is randomly generated.
According to the technical scheme, the power distribution body area network and the transmission method thereof, provided by the invention, the base station comprising the super node is embedded into the intelligent terminal, the sensing node is used as a client and a server, namely, the sensing node can assist other sensing nodes to forward data while sending data, and the real-time acquisition requirement of the data is realized.
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 according to an embodiment of the present invention;
FIG. 2 is a block diagram of a data frame according to an embodiment of the present invention;
fig. 3 is a flowchart of a transmission method of a power distribution body area network according to an embodiment of the present invention.
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.
Fig. 1 is a block diagram of a power distribution body area network according to an embodiment of the present invention. As shown in fig. 1, the power distribution body area network includes: the system comprises a super node and at least one sensing node, wherein the super node is arranged in an intelligent terminal and used for generating a sensing node ID corresponding to the connected sensing node when each sensing node in the at least one sensing node is connected to the super node for the first time and sending the corresponding sensing node ID and the super node ID to the connected sensing node; each sensing node in the at least one sensing node is used for receiving the corresponding sensing node ID and the super node ID, and when data is transmitted, the data to be transmitted, the corresponding sensing node ID and the super node ID form a data frame to be transmitted to the super node.
According to the requirements of a typical application scene of the power distribution Internet of things, the invention defines a power distribution body area network, and the super nodes are embedded into an intelligent terminal by utilizing a wireless sensor network technology, so that a main and auxiliary two-stage networking scheme of the super nodes and the sensing nodes is realized.
The power distribution body area network takes backbone nodes such as power distribution equipment and branch switches as main nodes, takes peripheral sensing devices as slave nodes, and forms a terminal communication access network taking a power distribution equipment body as an area in a closed small space, so that short-distance low-power-consumption communication of sensors, intelligent equipment and the like is realized, holographic sensing and data acquisition of electrical and environmental parameters are completed, and the problem of the last several meters of power distribution communication is solved. The typical application scenario is as follows:
the method comprises the following steps that 1, a distribution transformer monitoring scene is formed, and data are gathered to an intelligent terminal through networking of monitoring sensor nodes; scene 2, monitoring scenes of the outlet cabinet, networking through monitoring sensor nodes, and gathering data to a digital display meter terminal; scene 3, branch case monitoring scene assembles the wisdom switch with data through each monitoring sensor node network deployment.
The invention relates to a networking data transmission system of a power distribution body area network, which is a sensing data acquisition system designed aiming at power distribution service requirements. The cloud master station mainly has a role as a data center, gathers parameter data obtained by all the sensing devices sent by all the intelligent terminals, and performs service analysis; the intelligent terminal comprises an intelligent fusion terminal, an intelligent switch, a digital display meter and the like, and the wireless base station is embedded into the intelligent terminal as a super node; the sensing equipment mainly completes direct acquisition of each parameter data and reports the data to the intelligent terminal through the power distribution body area network constructed by the invention.
Because the super node is embedded into the intelligent terminal (fusing power distribution equipment such as terminal, wisdom switch, digital display table), is supplied power by the intelligent terminal, and the intelligent terminal gets the electricity source and mainly is 220V or 380V alternating current, consequently, from the perspective of management, need not consider the insufficient energy problem. Therefore, the networking of the distribution body area network is mainly considered, and the work related to large energy consumption is completed through the super nodes as far as possible. The super node applied in the power distribution body area network is used as a server to complete the work of connection, management, data analysis and the like of the sensor node.
The following details the composition of the sensing node ID:
the sensor node ID of the present invention is defined as follows: randomly generating 32 bits of integer data of a sequence number N1 (occupying 16 bits), a super node number N2 (occupying 4 bits), a self-increment N3 (occupying 12 bits). Wherein N1 generates a 16-bit randomly generated sequence number for the super node, i.e., a 2-byte random number, which is generated between 1 and 65535; n2 designates a 4-bit number between 1 and 15, N3 is the self-increment of the sensor node, and the step size is 1.
The composition of the data frame is detailed below:
fig. 2 is a schematic diagram of a data frame according to an embodiment of the present invention. As shown in fig. 2, the data frame includes a header, a destination address, a source address, a data field, and a trailer, when each sensing node transmits data, the header and the trailer fill preset bytes, the destination address fills the super node ID, the source address fills the corresponding sensing node ID, and the data field fills the data to be transmitted.
Wherein, the frame header is: 0x 550 xAA four bytes; the frame end is: 0x 550 xBB 0x 550 xBB four bytes; the destination address field is: a 32-bit ID, which occupies a space of 4 bytes; the source address field is: a 32-bit ID, which occupies a space of 4 bytes; data field: the first two bytes represent the length and the third byte represents the data that the node needs to transmit.
In addition, the data frame further includes an identification field, which occupies 1 byte space, that is, 8 bits, and when the identification field is 1, it indicates that the data in the data field in the data frame is forwarded data, and when the identification field is 0, it indicates that the data in the data field in the data frame is originally transmitted data (i.e., non-forwarded data).
The communication method of the power distribution body area network is detailed as follows:
firstly, a sensing node A is connected to a super node S before sending data, the super node S generates an ID for the sensing node A according to the sensing node ID generation rule of the invention, and fills one with the ID as a source address field and sends the ID to the sensing node A;
then, after acquiring the ID of the sensing node A and the ID of the super node S, the sensing node A fills the ID of the sensing node A into a source address domain when sending data, fills the ID of the super node S into a destination address domain, and forms a complete frame together with the data to be transmitted and sends the complete frame to the super node S;
when the first sensing node cannot be connected to the super node, the first sensing node is further used for sending data to be transmitted in a data domain, a data frame with a mark domain of 0 is sent to the second sensing node, the second sensing node sends the data frame with the data domain of 1 from the first sensing node to the super node.
That is, if the sensing node a (i.e., the first sensing node) is not connected to the super node S, the sensing node a searches for a neighbor node, and the sensing node C (i.e., the second sensing node) forwards data to the super node S through the sensing node C; when the sensing node C forwards the data frame, which is originally sent to the super node S by the sensing node A, is sent to the super node S as a data field of the sensing node C, and the identification field is set to be 1 so as to inform the super node S that the data frame is the data frame for forwarding. Similarly, after receiving the reply of the super node S, the sensor node C also forwards the whole received data frame to the sensor node A as a data field, thereby completing the whole routing purpose through the neighbor node.
For the selection of the neighbor node, the present invention provides the following means:
and when the first sensing node cannot be connected to the super node, the first sensing node is used for sending a forwarding request to other sensing nodes and forwarding data through the first replied sensing node.
That is, when the sensing node a selects the neighbor node, it faces two selection possibilities of the sensing node B and the sensing node C, and the invention adopts the principle of first come and first use, that is, the sensing node B replies first and then forwards the data to the super node S through the sensing node B, and if the sensing node C also replies, then the sensing node C is put into the standby list.
Fig. 3 is a flowchart of a transmission method of a power distribution body area network according to an embodiment of the present invention. As shown in fig. 3, the power distribution body area network includes a super node and at least one sensing node, where the super node is disposed in an intelligent terminal, and the method includes:
step S31, when each sensing node of the at least one sensing node is connected to the super node for the first time, the super node generates a sensing node ID corresponding to the connected sensing node, and sends the corresponding sensing node ID and super node ID to the connected sensing node;
step S32, each of the at least one sensor node receives the corresponding sensor node ID and the super node ID, and when transmitting data, forms a data frame with the data to be transmitted, the corresponding sensor node ID, and the super node ID, and transmits the data frame to the super node.
Preferably, the data frame includes a frame header, a destination address, a source address, a data field, and a frame tail, and when each sensing node transmits data, the frame header and the frame tail fill preset bytes, the destination address fills the super node ID, the source address fills the corresponding sensing node ID, and the data field fills the data to be transmitted.
Preferably, the data frame further includes an identification field, and the method further includes: when a first sensing node cannot be connected to the super node, the first sensing node sends a data frame with a data field of data to be transmitted and a mark field of 0 to a second sensing node; and the second sensing node sends a data frame with a data field of 1 to the super node, wherein the data frame is received from the first sensing node.
Preferably, the method further comprises: when a first sensing node cannot be connected to the super node, the first sensing node sends a forwarding request to other sensing nodes, and forwards data through a first replied sensing node.
Preferably, the sensing node ID includes: at least one of a sequence number, a super node number, and an auto-increment value is randomly generated.
The embodiment of the transmission method of the power distribution body area network is similar to the embodiment of the power distribution body area network, and is not described herein again.
It should also 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 (10)
1. A power distribution body area network, comprising:
a super node and at least one sensing node, wherein,
the super node is arranged in the intelligent terminal and used for generating a sensing node ID corresponding to the connected sensing node when each sensing node in the at least one sensing node is connected to the super node for the first time and sending the corresponding sensing node ID and the super node ID to the connected sensing node;
each sensing node in the at least one sensing node is used for receiving the corresponding sensing node ID and the super node ID, and when data is transmitted, the data to be transmitted, the corresponding sensing node ID and the super node ID form a data frame to be transmitted to the super node.
2. The electric distribution body area network of claim 1, wherein the data frame comprises a header, a destination address, a source address, a data field, and a trailer, wherein when each sensing node transmits data, the header and trailer are padded with preset bytes, the destination address is padded with the super node ID, the source address is padded with the corresponding sensing node ID, and the data field is padded with the data to be transmitted.
3. The electric distribution body area network of claim 1, wherein the data frame further comprises an identification field, and when a first sensor node cannot be connected to the super node, the first sensor node is further configured to send a data frame with a data field of data to be transmitted and an identification field of 0 to a second sensor node, the second sensor node sends a data frame with a data field of data received from the first sensor node and an identification field of 1 to the super node.
4. The electrical distribution body area network of claim 1, wherein when a first sensing node fails to connect to the supernode, the first sensing node is configured to send a forwarding request to other sensing nodes and forward data through a first responding sensing node.
5. The electrical distribution body area network of any one of claims 1-4, wherein the sensing node IDs comprise:
at least one of a sequence number, a super node number, and an auto-increment value is randomly generated.
6. A transmission method of a power distribution body area network is characterized in that the power distribution body area network comprises a super node and at least one sensing node, the super node is arranged in an intelligent terminal, and the method comprises the following steps:
the super node generates a sensing node ID corresponding to the connected sensing node when each sensing node in the at least one sensing node is connected to the super node for the first time, and sends the corresponding sensing node ID and the super node ID to the connected sensing node;
and each sensing node in the at least one sensing node receives the corresponding sensing node ID and the super node ID, and forms a data frame by the data to be transmitted, the corresponding sensing node ID and the super node ID when transmitting the data, and transmits the data frame to the super node.
7. The method according to claim 6, wherein the data frame comprises a header, a destination address, a source address, a data field, and a trailer, and when each of the sensor nodes transmits data, the header and the trailer are filled with preset bytes, the destination address is filled with the super node ID, the source address is filled with the corresponding sensor node ID, and the data field is filled with the data to be transmitted.
8. The method of transmission over an electrical distribution body area network of claim 6, wherein the data frame further comprises an identification field, the method further comprising:
when a first sensing node cannot be connected to the super node, the first sensing node sends a data frame with a data field of data to be transmitted and a mark field of 0 to a second sensing node;
and the second sensing node sends a data frame with a data field of 1 to the super node, wherein the data frame is received from the first sensing node.
9. The method for transmission over an electrical distribution body area network of claim 6, further comprising:
when a first sensing node cannot be connected to the super node, the first sensing node sends a forwarding request to other sensing nodes, and forwards data through a first replied sensing node.
10. The transmission method for an electrical distribution body area network according to any of claims 6 to 9, wherein the sensing node ID comprises:
at least one of a sequence number, a super node number, and an auto-increment value is randomly generated.
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