CN114641045A - Power transmission line communication channel switching method and system based on communication quality perception - Google Patents
Power transmission line communication channel switching method and system based on communication quality perception Download PDFInfo
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- CN114641045A CN114641045A CN202210172509.9A CN202210172509A CN114641045A CN 114641045 A CN114641045 A CN 114641045A CN 202210172509 A CN202210172509 A CN 202210172509A CN 114641045 A CN114641045 A CN 114641045A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/0085—Hand-off measurements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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Abstract
The invention discloses a power transmission line communication channel switching method and a power transmission line communication channel switching system based on communication quality perception, wherein the power transmission line communication channel switching method based on communication quality perception comprises the following steps: sending a detection message in a current communication channel according to a preset rate, and then recording relevant parameters of the detection message received from a receiving port corresponding to the current communication channel; calculating the communication quality parameter of the current communication channel according to the relevant parameter of the detection message; judging whether the current communication channel meets the set abnormal channel judgment condition or not according to the communication quality parameters of the current communication channel, if so, judging the current communication channel as an abnormal channel, and recording the abnormal times of the current communication channel; when the abnormal times reach a preset second threshold value, executing channel switching operation; the invention can realize the intelligent perception switching of the current communication channel, ensure that the selected target channel can be matched with the characteristic of data transmission, and improve the stability and the reliability of the data transmission of the target channel.
Description
Technical Field
The invention relates to the technical field of power transmission lines, in particular to a power transmission line communication channel switching method and system based on communication quality perception.
Background
In recent years, with the rapid development of the internet of things technology, the power equipment "goes to the cloud" and "goes to the platform" has become a normal state in the industry, and in a conventional situation, a wireless data sending terminal is generally added at a power equipment end and used for collecting the operating parameters of the power equipment and sending the operating parameters to a server end for storage. However, as the number of wireless data transmitting terminals accessed from the power transmission line side increases, the interference in the communication environment increases, which affects the performance of the wireless network. Therefore, how to sense the communication quality and automatically switch the communication channel after the communication quality is reduced to a certain degree to ensure the normal data transmission is a technical problem to be solved in the prior art.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the above-mentioned conventional problems.
Therefore, the invention provides a power transmission line communication channel switching method based on communication quality perception, which can perceive the communication quality, automatically switch the communication channel after the communication quality is reduced to a certain degree, and ensure the normal transmission of data.
In order to solve the above technical problems, the present invention provides the following technical solutions, including: a power transmission line communication channel switching method based on communication quality perception is characterized by comprising the following steps: sending a detection message in a current communication channel according to a preset rate, and then recording relevant parameters of the detection message received from a receiving port corresponding to the current communication channel;
calculating the communication quality parameter of the current communication channel according to the relevant parameter of the detection message;
judging whether the current communication channel meets set abnormal channel judgment conditions or not according to the communication quality parameters of the current communication channel, if so, judging the current communication channel as an abnormal channel, and recording the abnormal times of the current communication channel;
and executing channel switching operation when the abnormal times reach a preset second threshold value.
As an optimal scheme of the power transmission line communication channel switching method based on communication quality perception, the method comprises the following steps: the channel switching operation includes: acquiring state information of each candidate communication channel; and selecting a corresponding candidate communication channel as a target channel according to the subcarrier difference data of each candidate communication channel, and switching the channels.
As an optimal scheme of the power transmission line communication channel switching method based on communication quality perception, the method comprises the following steps: the method comprises the following steps: recording the total number, the maximum message serial number and the minimum message serial number of the detection messages received from the receiving port corresponding to the current communication channel in a set period; and calculating the communication quality parameter of the current communication channel according to the total number of the detected messages, the maximum message serial number and the minimum message serial number.
As an optimal scheme of the power transmission line communication channel switching method based on communication quality perception, the method comprises the following steps: the communication quality parameter comprises a packet loss rate LTAnd a delay parameter Td(ii) a Wherein, the packet loss rate LTComprises the following steps:
LT＝N/(SNMax-SNMin)
delay parameter TdComprises the following steps:
Td＝Tre1-Ttr1
wherein N is the total number of the detection messages, SNMaxIs the maximum message sequence number, SNMinIs the minimum message serial number; t isre1For receiving the first detection message from the receiving port corresponding to the current communication channel, Ttr1The time for sending the first detection message to the sending end.
As an optimal scheme of the power transmission line communication channel switching method based on communication quality perception, the method comprises the following steps: the abnormal passage determination condition includes: packet loss rate LTLess than 97%, and a delay parameter TdGreater than 5 ms.
As an optimal scheme of the power transmission line communication channel switching method based on communication quality perception, the method comprises the following steps: the preset second threshold is 5.
As an optimal scheme of the power transmission line communication channel switching method based on communication quality perception, the method comprises the following steps: the subcarrier difference data is the amplitude standard deviation of each subcarrier.
As an optimal scheme of the power transmission line communication channel switching method based on communication quality perception, the method comprises the following steps: it is characterized by comprising: and selecting the candidate communication channel with the minimum amplitude standard deviation of each subcarrier from the candidate communication channels as the target channel.
As an optimal scheme of the power transmission line communication channel switching system based on communication quality perception, the power transmission line communication channel switching system based on communication quality perception comprises the following steps: the method comprises the following steps: the communication quality sensing module is used for enabling the sending end to send the detection message in the current communication channel according to the preset rate and obtaining the communication quality parameter of the current communication channel; the channel abnormity judging module is connected with the communication quality sensing module and used for judging whether the current communication channel is abnormal according to the communication quality parameters of the current communication channel, if so, recording the abnormal times of the current communication channel, and sending a first signal to the channel switching module when the abnormal times reach a preset second threshold value; and the channel switching module is connected with the channel abnormity judging module and can execute channel switching operation after receiving the first signal.
As an optimal scheme of the power transmission line communication channel switching system based on communication quality perception, the power transmission line communication channel switching system based on communication quality perception comprises the following steps: the communication quality parameter of the current communication channel comprises a packet loss rate LTAnd a delay parameter Td。
The invention has the beneficial effects that: the invention can realize the intelligent sensing switching of the current communication channel by periodically measuring the communication quality parameter of the current communication channel, judging whether the current channel is abnormal based on the measured communication quality parameter and executing the channel switching operation under the condition that the abnormal times of the current communication channel exceed the set threshold value, and simultaneously, selecting the corresponding target channel based on the subcarrier difference data of the candidate communication channel to ensure that the selected target channel can be matched with the characteristic of data transmission, thereby improving the stability and reliability of the data transmission of the target channel.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
fig. 1 is a schematic flow chart illustrating a process of calculating a communication quality parameter of a current communication channel according to a power transmission line communication channel switching method based on communication quality awareness according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a power transmission line communication channel switching system based on communication quality perception according to a first embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, specific embodiments accompanied with figures are described in detail below, and it is apparent that the described embodiments are a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present invention, shall fall within the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
The present invention will be described in detail with reference to the drawings, wherein the cross-sectional views illustrating the structure of the device are not enlarged partially in general scale for convenience of illustration, and the drawings are only exemplary and should not be construed as limiting the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
Meanwhile, in the description of the present invention, it should be noted that the terms "upper, lower, inner and outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation and operate, and thus, cannot be construed as limiting the present invention. Furthermore, the terms first, second, or third are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The terms "mounted, connected and connected" in the present invention are to be understood broadly, unless otherwise explicitly specified or limited, for example: can be fixedly connected, detachably connected or integrally connected; they may be mechanically, electrically, or directly connected, or indirectly connected through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Example 1
Referring to fig. 1, a first embodiment of the present invention provides a method for switching a communication channel of a power transmission line based on communication quality awareness, including:
s1: and sending the detection message in the current communication channel according to a preset rate, and then recording relevant parameters of the detection message received from a receiving port corresponding to the current communication channel.
And periodically sending a detection message at the current communication channel according to a preset rate through the sending end.
Furthermore, in a set period, recording relevant parameters of the detection message received from the receiving port corresponding to the current communication channel.
The related parameters of the detection messages comprise the total number of the detection messages, the maximum message serial number and the minimum message serial number, and the message serial numbers are sequentially increased progressively according to the sending times.
S2: and calculating the communication quality parameter of the current communication channel according to the relevant parameter of the detection message.
Calculating the communication quality parameter of the current communication channel according to the total number of the detected messages, the maximum message serial number and the minimum message serial number, namely the packet loss rate LTAnd a delay parameter Td；
Wherein, the packet loss rate LTComprises the following steps:
LT＝N/(SNMax-SNMin)
after the set period is started, recording the system time T when the first detection message is received from the receiving port corresponding to the current communication channelre1Calculating a delay parameter Td：
Td＝Tre1-Ttr1
Wherein N is the total number of the detection messages, SNMaxIs the maximum message sequence number, SNMinIs the minimum message serial number; t istr1And sending the first detection message to the sending end.
S3: and judging whether the current communication channel meets the set abnormal channel judgment condition or not according to the communication quality parameters of the current communication channel, if so, judging the current communication channel as an abnormal channel, and recording the abnormal times of the abnormal channel.
The abnormal passage determination conditions are as follows:
packet loss rate LTLess than 97%, and a delay parameter TdGreater than 5 ms.
S4: and when the abnormal times reach a preset second threshold value, executing channel switching operation.
The preset second threshold is 5.
Specifically, the channel switching operation includes the following steps:
(1) acquiring state information of each candidate communication channel;
(2) and based on each candidate communication channel, selecting a corresponding candidate communication channel as a target channel according to the subcarrier difference data of each candidate communication channel, and switching the channels.
And selecting the candidate communication channel with the minimum amplitude standard deviation of each subcarrier from the candidate communication channels as a target channel.
Wherein, the subcarrier difference data is the amplitude standard deviation of each subcarrier.
Preferably, when the communication channel is switched, the corresponding target channel is selected based on the subcarrier difference data of the candidate communication channel, so that the selected target channel can be ensured to be matched with the characteristic of data transmission, and the stability and reliability of data transmission of the target channel are further ensured.
Example 2
Referring to fig. 2, a second embodiment of the present invention, which is different from the first embodiment, provides a power transmission line communication channel switching system based on communication quality perception, including,
a communication quality sensing module 100, configured to enable a sending end to send a detection packet in a current communication channel according to a preset rate, and obtain a communication quality parameter of the current communication channel; wherein, the communication quality parameter of the current communication channel comprises a packet loss rate LTAnd a delay parameter Td。
The channel abnormity determining module 200 is connected with the communication quality sensing module 100 and is used for determining whether the current communication channel is abnormal according to the communication quality parameters of the current communication channel, if so, recording the abnormal times, and sending a first signal to the channel switching module 300 when the abnormal times reach a preset second threshold value;
the channel switching module 300 is connected to the channel abnormality determining module 200, and is capable of performing a channel switching operation after receiving the first signal.
It should be recognized that embodiments of the present invention can be realized and implemented by computer hardware, a combination of hardware and software, or by computer instructions stored in a non-transitory computer readable memory. The methods may be implemented in a computer program using standard programming techniques, including a non-transitory computer-readable storage medium configured with the computer program, where the storage medium so configured causes a computer to operate in a specific and predefined manner, according to the methods and figures described in the detailed description. Each program may be implemented in a high level procedural or object oriented programming language to communicate with a computer system. However, the program(s) can be implemented in assembly or machine language, if desired. In any case, the language may be a compiled or interpreted language. Furthermore, the program can be run on a programmed application specific integrated circuit for this purpose.
Further, the operations of processes described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The processes described herein (or variations and/or combinations thereof) may be performed under the control of one or more computer systems configured with executable instructions and may be implemented as code (e.g., executable instructions, one or more computer programs, or one or more applications) collectively executed on one or more processors, by hardware, or combinations thereof. The computer program includes a plurality of instructions executable by one or more processors.
Further, the method may be implemented in any type of computing platform operatively connected to a suitable interface, including but not limited to a personal computer, mini computer, mainframe, workstation, networked or distributed computing environment, separate or integrated computer platform, or in communication with a charged particle tool or other imaging device, and the like. Aspects of the invention may be embodied in machine-readable code stored on a non-transitory storage medium or device, whether removable or integrated into a computing platform, such as a hard disk, optically read and/or write storage medium, RAM, ROM, or the like, such that it may be read by a programmable computer, which when read by the storage medium or device, is operative to configure and operate the computer to perform the procedures described herein. Further, the machine-readable code, or portions thereof, may be transmitted over a wired or wireless network. The invention described herein includes these and other different types of non-transitory computer-readable storage media when such media includes instructions or programs that implement the steps described above in conjunction with a microprocessor or other data processor. The invention also includes the computer itself when programmed according to the methods and techniques described herein. A computer program can be applied to input data to perform the functions described herein to transform the input data to generate output data that is stored to non-volatile memory. The output information may also be applied to one or more output devices, such as a display. In a preferred embodiment of the invention, the transformed data represents physical and tangible objects, including particular visual depictions of physical and tangible objects produced on a display.
As used in this application, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being: a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of example, both an application running on a computing device and the computing device can be a component. One or more components can reside within a process and/or thread of execution and a component can be localized on one computer and/or distributed between two or more computers. In addition, these components can execute from various computer readable media having various data structures thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from one component interacting with another component in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. A power transmission line communication channel switching method based on communication quality perception is characterized by comprising the following steps:
sending a detection message in a current communication channel according to a preset rate, and then recording relevant parameters of the detection message received from a receiving port corresponding to the current communication channel;
calculating the communication quality parameter of the current communication channel according to the relevant parameter of the detection message;
judging whether the current communication channel meets set abnormal channel judgment conditions or not according to the communication quality parameters of the current communication channel, if so, judging the current communication channel as an abnormal channel, and recording the abnormal times of the current communication channel;
and executing channel switching operation when the abnormal times reach a preset second threshold value.
2. The power transmission line communication channel switching method based on communication quality perception according to claim 1, wherein the channel switching operation includes:
acquiring state information of each candidate communication channel;
and selecting a corresponding candidate communication channel as a target channel according to the subcarrier difference data of each candidate communication channel, and switching the channels.
3. The power transmission line communication channel switching method based on communication quality perception according to claim 1 or 2, wherein the method comprises the following steps:
recording the total number, the maximum message serial number and the minimum message serial number of the detection messages received from the receiving port corresponding to the current communication channel in a set period;
and calculating the communication quality parameter of the current communication channel according to the total number of the detected messages, the maximum message serial number and the minimum message serial number.
4. The power transmission line communication channel switching method based on communication quality perception according to claim 3, wherein the communication quality parameter includes a packet loss rate LTAnd a delay parameter Td；
Wherein, the packet loss rate LTComprises the following steps:
LT＝N/(SNMax-SNMin)
delay parameter TdComprises the following steps:
Td＝Tre1-Ttr1
wherein N is the total number of the detection messages, SNMaxIs the maximum message sequence number, SNMinIs the minimum message serial number; t isre1For receiving the first detection message from the receiving port corresponding to the current communication channel, Ttr1And sending the first detection message to the sending end.
5. The power transmission line communication channel switching method based on communication quality perception according to claim 4, wherein the abnormal channel determination condition includes:
packet loss rate LTLess than 97%, and a delay parameter TdGreater than 5 ms.
6. The power transmission line communication channel switching method based on communication quality perception according to claim 4 or 5, wherein the preset second threshold is 5.
7. The power transmission line communication channel switching method based on communication quality perception according to claim 6, wherein the subcarrier difference data is an amplitude standard deviation of each subcarrier.
8. The power transmission line communication channel switching method based on communication quality perception according to claim 7, wherein the method comprises the following steps:
and selecting the candidate communication channel with the minimum amplitude standard deviation of each subcarrier from the candidate communication channels as the target channel.
9. Transmission line communication channel switching system based on communication quality perception, its characterized in that includes:
the communication quality sensing module (100) is used for enabling the sending end to send the detection message in the current communication channel according to the preset rate and obtaining the communication quality parameter of the current communication channel;
the channel abnormity judging module (200) is connected with the communication quality sensing module (100) and is used for judging whether the current communication channel is abnormal according to the communication quality parameters of the current communication channel, recording the abnormal times if the current communication channel is abnormal, and sending a first signal to the channel switching module (300) when the abnormal times reach a preset second threshold value;
and the channel switching module (300) is connected with the channel abnormity judging module (200) and can execute channel switching operation after receiving the first signal.
10. The method of claim 9 based on communication qualityThe perceptual power transmission line communication channel switching system is characterized in that the communication quality parameter of the current communication channel comprises a packet loss rate LTAnd a delay parameter Td。
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| CN116319573A (en) * | 2023-05-11 | 2023-06-23 | 石家庄科林电气股份有限公司 | Communication method and device of dual-mode module electric energy meter in power grid and electric energy meter |
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