CN113824471A - Method and device for identifying distribution area, terminal equipment and storage medium - Google Patents
Method and device for identifying distribution area, terminal equipment and storage medium Download PDFInfo
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- CN113824471A CN113824471A CN202111161697.7A CN202111161697A CN113824471A CN 113824471 A CN113824471 A CN 113824471A CN 202111161697 A CN202111161697 A CN 202111161697A CN 113824471 A CN113824471 A CN 113824471A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/46—Monitoring; Testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/14—Network analysis or design
- H04L41/145—Network analysis or design involving simulating, designing, planning or modelling of a network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/50—Testing arrangements
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Abstract
The application discloses a method and a device for identifying a distribution room, terminal equipment and a storage medium, wherein the method comprises the following steps: determining an environmental noise signal of a preset power line channel based on the actually measured environmental parameters of the actual power line channel; transmitting an environment noise signal into a preset power line channel to obtain a power line simulation channel; on a power line analog channel connected with a target node, a primary carrier signal is sent to the target node, and the primary carrier signal is received by the target node to obtain a secondary carrier signal; and if the primary carrier signal is consistent with the secondary carrier signal, determining that the target node is the station area node. According to the method and the device, the target node in the transformer area is identified on the power line simulation channel for simulating the actual power grid power environment, so that the identification efficiency of the transformer area node and the accuracy of the communication signal are improved.
Description
Technical Field
The present application relates to the field of carrier communication technologies, and in particular, to a method and an apparatus for identifying a distribution room, a terminal device, and a storage medium.
Background
Power Line Carrier (PLC) communication is a special communication method for performing voice transmission or data transmission using a high-frequency modulation signal and using a Power Line as an information transmission medium. The application of the low-voltage power line carrier communication comprises the collection of power utilization information, and the station area user variation relation needs to be accurately identified when the power utilization information is collected so as to ensure the accuracy of power utilization information transmission.
At present, an Orthogonal Frequency Division Multiplexing (OFDM) subcarrier Frequency point with attenuation from a secondary side to a primary side of a distribution transformer is mainly used as a region identification signal, and then the region identification is performed on the OFDM signal of the selected subcarrier Frequency point; wherein before the station area identification operation, the frequency form of the station area identification signal is confirmed by carrier communication of the secondary side and the primary side of the distribution transformer. However, in practical application, the measuring devices are required to be installed on two sides of the distribution transformer in each transformer area identification, and the transformer area node identification method is complex to operate and not beneficial to rapid identification of transformer area nodes.
Disclosure of Invention
The application provides a method and a device for identifying a distribution area, terminal equipment and a storage medium, and aims to solve the technical problem of low identification efficiency of the conventional distribution area identification method.
In a first aspect, an embodiment of the present application provides a method for identifying a distribution area, including:
determining an environmental noise signal of a preset power line channel based on the actually measured environmental parameters of the actual power line channel;
transmitting an environment noise signal into a preset power line channel to obtain a power line simulation channel;
on a power line analog channel connected with a target node, a primary carrier signal is sent to the target node, and the primary carrier signal is received by the target node to obtain a secondary carrier signal;
and if the primary carrier signal is consistent with the secondary carrier signal, determining that the target node is the station area node.
In the embodiment, an environment noise signal of a preset power line channel is simulated through an actually measured environment parameter of an actual power line channel, and the environment noise signal is transmitted into the preset power line channel to obtain a simulated channel for restoring the actual power line channel environment, so that the simulated channel is isolated from a public power grid, and a transformer area node identification process can be performed on the power line simulated channel without additionally arranging a measuring device; and sending a primary carrier signal to a power line simulation channel connected with the target node, wherein the primary carrier signal is received by the target node to obtain a secondary carrier signal, and when the primary carrier signal is consistent with the secondary carrier signal, the target node is determined to be a distribution area node, so that the target node in the distribution area is identified on the power line simulation channel simulating the actual power grid power environment, and the identification efficiency of the distribution area node and the accuracy of a communication signal are improved.
In an embodiment, determining an environmental noise signal of a predetermined power line channel based on a measured environmental parameter of an actual power line channel includes:
acquiring an actual environment noise signal of an actual channel of a power line;
based on the orthogonal frequency division multiplexing technology, the actual environment noise signal is modulated and separated, and the environment noise signal of the preset power line channel is obtained.
This embodiment is through the noise signal of gathering the power line actual environment to through the separation to this noise signal modulation, with the environmental noise signal of simulating out the power line, thereby be convenient for follow-up reduction goes out the noise environment of predetermineeing the power line channel, and be convenient for follow-up discernment platform district node on the power line simulation channel.
In one embodiment, the transmitting the environmental noise signal into the predetermined plc channel to obtain the plc analog channel includes:
and coupling the environmental noise signal to a preset power line channel based on a preset filtering coupling circuit to obtain a power line simulation channel.
In the embodiment, the environmental noise signal is transmitted into the preset power line channel in a coupling manner, so that the preset power line channel has the noise environment of the actual power line channel, and the power line simulation channel can be obtained through simulation.
In one embodiment, transmitting a primary carrier signal to a target node over a powerline analog channel connecting the target node comprises:
controlling a carrier signal transmitting end to transmit a primary carrier signal;
carrying out frequency domain division and inverse fast Fourier transform on the primary carrier signal to obtain a plurality of parallel signals;
and transmitting the parallel signals into a power line analog channel connected with a target node, and performing fast Fourier transform on the parallel signals after the parallel signals are received by the target node to obtain secondary carrier signals.
In the embodiment, frequency domain division, inverse fast fourier transform and fast fourier transform are performed on a primary carrier signal, so that the carrier signal has the multipath fading resistance, and thus the carrier signal supports multi-user (target node) access, the station area identification of a plurality of target nodes is realized, and the identification efficiency is further improved.
In one embodiment, transmitting a plurality of parallel signals into a powerline analog channel connecting target nodes comprises:
dividing a bandwidth frequency band of a power line analog channel into a plurality of sub-channels;
and transmitting a plurality of parallel signals to the target node on the center frequencies of the plurality of sub-channels.
This embodiment is through dividing the bandwidth frequency channel into a plurality of sub-channels to make power line analog channel can bear and transmit more data in the broad frequency band, reduce the identification error that transmission process caused because of external noise and decay, thereby make the identification result more accurate.
In an embodiment, before determining the environmental noise signal of the preset power line channel based on the measured environmental parameter of the actual power line channel, the method further includes:
establishing a preset power line channel based on the field programmable logic gate array, the digital-to-analog converter and the program-controlled attenuator;
and establishing a communication channel model according to a preset power line channel, wherein the communication channel model comprises a modulation channel model and a coding channel model.
In the embodiment, a preset power line channel is established through the FPGA, the D/A and the programmable attenuator, and a communication channel model is established to simulate the basic communication environment of the actual power line channel and determine the signal modulation mode and the coding mode of the carrier signal.
In one embodiment, before transmitting a carrier signal to a target node once on a power line analog channel connected to the target node, the method further includes:
and generating a communication path between the distribution transformer and the target node based on a preset routing algorithm.
The communication path is generated through the routing algorithm, so that the path selection of the transformer and the target nodes is realized, and the signal transmission is conveniently carried out subsequently.
In a second aspect, an embodiment of the present application provides a station area identification apparatus, including:
the determining module is used for determining an environmental noise signal of a preset power line channel based on the actually measured environmental parameters of the actual power line channel;
the transmitting module is used for transmitting the environmental noise signal into a preset power line channel to obtain a power line analog channel;
the transmitting module is used for transmitting a primary carrier signal to the target node on a power line analog channel connected with the target node, and the primary carrier signal is received by the target node to obtain a secondary carrier signal;
and the judging module is used for judging that the target node is the station area node if the primary carrier signal is consistent with the secondary carrier signal.
In a third aspect, an embodiment of the present application provides a terminal device, which includes a memory and a processor, where the memory stores computer-readable instructions, and the processor executes the computer-readable instructions to implement the steps of the method for identifying a cell in the first aspect.
In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the method for identifying a station zone of the first aspect is implemented.
It should be noted that, for the beneficial effects of the second aspect to the fourth aspect, reference is made to the description related to the first aspect, and details are not repeated here.
Drawings
Fig. 1 is a schematic structural diagram of a station area identification system according to an embodiment of the present application;
fig. 2 is a schematic flowchart of a station area identification method according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a platform area identification apparatus according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As described in the related background art, currently, the Orthogonal Frequency Division Multiplexing (OFDM) subcarrier Frequency point with attenuation from the secondary side to the primary side of a distribution transformer is mainly used as a station area identification signal, and then the station area identification is performed on the OFDM signal of the selected subcarrier Frequency point;
the frequency form of the transformer area identification signal is confirmed through carrier communication of the secondary side and the primary side of the distribution transformer, and the carrier communication module of the primary side sends a signal for blocking the transmission of the secondary side transformer area identification signal on the primary side, so that the transformer area identification signal transmitted based on a power line cannot be transmitted to other transformer areas, and the transformer area outdoor transformer relationship is effectively identified. Wherein through the carrier communication of distribution transformer secondary side and primary side, confirm the frequency form of district identification signal, but when practical application, district discernment all will be at distribution transformer's both sides installation measuring device at every turn, complex operation is unfavorable for quick discernment district node, has the problem of inefficiency.
Therefore, the embodiment of the application provides a method, a device, a system, a terminal device and a storage medium for identifying a transformer area, wherein the method simulates an environmental noise signal of a preset power line channel through an actual measurement environmental parameter of the actual power line channel, and transmits the environmental noise signal into the preset power line channel to obtain a simulation channel for restoring the actual power line channel environment, so that the simulation channel is isolated from a public power grid, and the transformer area node identification process can be carried out on the power line simulation channel without additionally arranging a measuring device; and sending a primary carrier signal to a power line simulation channel connected with the target node, wherein the primary carrier signal is received by the target node to obtain a secondary carrier signal, and when the primary carrier signal is consistent with the secondary carrier signal, the target node is determined to be a distribution area node, so that the target node in the distribution area is identified on the power line simulation channel simulating the actual power grid power environment, and the identification efficiency of the distribution area node and the accuracy of a communication signal are improved.
Fig. 1 shows a schematic structural diagram of a station area identification system provided in an embodiment of the present application. Referring to fig. 1, a station area identification system 10 includes a distribution transformer 101, a signal generator 102, a wave recording device 103, a distributed power supply apparatus 104, and a terminal apparatus 105. The distribution transformer 101, the signal generator 102, the wave recording device 103, the distributed power supply device 104 and the terminal device 105 are connected in communication, and the communication connection may be a wired connection. The distribution transformer 101, the signal generator 102 and the wave recording device 103 are combined to simulate a power line channel, which includes signal transmission, channel monitoring, channel interference and the like of the simulated power line channel, the distributed power supply device 104 is used for simulating power distribution, and the terminal device 105 carries a software system for regulating and controlling the identification process.
Alternatively, the distribution transformer 101 is a transformer that actually performs the station area identification.
Optionally, the signal generator 102 comprises a carrier signal transmitting end for transmitting a primary carrier signal.
Alternatively, the terminal device 105 is a computer having a function of issuing a manipulation command, such as an upper computer, a smart phone, a tablet computer, a personal digital assistant, and the like. The specific type of the terminal device 105 in this embodiment is not limited.
It will be appreciated that the above-described platform identification system 10 is for example only, and in other embodiments may include more or fewer components. For example, it may further include a filter coupling circuit, a Field Programmable Gate Array (FPGA), a digital-to-analog converter (D/a), a Programmable attenuator, and other components, which are not described herein again.
Fig. 2 shows a schematic flow chart of a station area identification method according to an embodiment of the present application. The following method for identifying a cell in the embodiment of the present application can be applied to the terminal device 105 shown in fig. 1, and the method includes steps S201 to S204, which are detailed as follows:
step S201, determining an environmental noise signal of a preset power line channel based on the measured environmental parameter of the actual power line channel.
In this step, the actual power line channel is an actual communication channel of the power line of the power grid, the actually measured environmental parameter may be an actual environmental noise signal of the actual power line channel, and the preset power line channel is a simulation channel pre-established based on the power distribution transformer, the signal generator, and the wave recording device, and is used for simulating signal transmission, channel monitoring, channel interference, and the like of the power line channel. Optionally, the predetermined powerline channel includes a transmitting end for transmitting the carrier signal, a channel portion for generating the program-controlled attenuation, and a receiving end for receiving the carrier signal.
Optionally, on the basis of the distribution transformer, the signal generator and the wave recording device, a preset power line channel is established based on the FPGA, the D/A and the program-controlled attenuator; and establishing a communication channel model according to a preset power line channel, wherein the communication channel model comprises a modulation channel model and a coding channel model. The programmable attenuation of the preset power line channel is simulated through the FPGA, the D/A and the programmable attenuator.
Step S202, transmitting the environmental noise signal into a preset power line channel to obtain a power line analog channel.
In this step, on the basis of the preset power line channel, the coupling environmental noise, that is, the power line analog channel, includes a transmitting end for transmitting the carrier signal, a channel portion for generating the program-controlled attenuation and the coupling noise, and a receiving end for receiving the carrier signal.
Optionally, the coupling noise may be implemented by a filtering coupling circuit, and the ambient noise signal is coupled to a preset power line channel by using signal injection between the filtering coupling circuit and the analog-to-digital converter, that is, based on the preset filtering coupling circuit, to obtain the power line analog channel. The environmental noise signal is transmitted into the preset power line channel in a coupling mode, so that the preset power line channel has the noise environment of the actual power line channel, and the power line simulation channel can be obtained through simulation.
States such as attenuation, interference and the like of the actual channel environment of the power line are simulated, the actual power line environment of the power grid is accurately simulated, and the identification of the station area nodes is assisted by combining an algorithm and a computer program, so that the effect of improving the identification accuracy is achieved.
Step S203, a primary carrier signal is sent to the target node on the power line analog channel connected with the target node, and the primary carrier signal is received by the target node to obtain a secondary carrier signal.
In this step, the target node may be a power router, a power meter, or the like. One or more target nodes may be provided in the area, so that a communication path between the distribution transformer and the plurality of target nodes needs to be established. Optionally, a communication path between the distribution transformer and the target node is generated based on a preset routing algorithm, where the routing algorithm may be an LS routing algorithm or a Dijkstra algorithm, and the like. It will be appreciated that there may be multiple target nodes on the power line analog channel, each forming a separate communication path with the distribution transformer.
Illustratively, the channel portion of the power line analog channel produces programmed attenuation and coupling noise to simulate the actual environment of the power line actual channel. The method comprises the steps that a primary carrier signal is transmitted by controlling a carrier signal transmitting end, the primary carrier signal is transmitted on a power line analog channel after being modulated, the primary carrier signal is transmitted to each target node based on a communication path generated by a routing algorithm, and a receiving end of each target node receives the primary carrier signal and recovers the primary carrier signal into a secondary carrier signal.
In step S204, if the primary carrier signal is consistent with the secondary carrier signal, the target node is determined to be a cell node.
In this step, if the primary carrier signal is consistent with the secondary carrier signal, it is indicated that the signal transmission is complete before and after, so that it can be determined that the primary carrier signal is received by a target node in the distribution area, and the target node is marked as a distribution area node of the distribution area. If the primary carrier signal is inconsistent with the secondary carrier signal, the signal transmission is not complete before and after, so that the primary carrier signal can be determined to be received by target nodes of other transformer areas, and the target node is marked as a non-transformer-area node of the transformer area.
In an embodiment, on the basis of the embodiment shown in fig. 2, the step S201 specifically includes: acquiring an actual environment noise signal of an actual channel of a power line; based on the orthogonal frequency division multiplexing technology, the actual environment noise signal is modulated and separated, and the environment noise signal of the preset power line channel is obtained.
In this embodiment, the actual environment noise signal may include an operation noise signal and a multiband program-controlled noise signal of various distributed power sources of the energy internet, where the operation noise signal of the preset power line channel may be simulated based on the distributed power source device in cooperation with the distribution transformer, the signal generator, and the wave recording device, and the multiband program-controlled noise signal may be simulated based on the FPGA, the D/a, and the program-controlled attenuator. Optionally, the actual environmental noise signal is modulated and separated in an OFDM manner through a programmable circuit to simulate and obtain an environmental noise signal for the preset power line channel, so as to facilitate subsequent restoration of the noise environment of the preset power line channel, and facilitate subsequent identification of the station area node on the power line simulation channel.
In an embodiment, on the basis of the embodiment shown in fig. 2, the step S203 specifically includes: controlling a carrier signal transmitting end to transmit a primary carrier signal; carrying out frequency domain division and inverse fast Fourier transform on the primary carrier signal to obtain a plurality of parallel signals; and transmitting the parallel signals into a power line analog channel connected with a target node, and performing fast Fourier transform on the parallel signals after the parallel signals are received by the target node to obtain secondary carrier signals.
In the present embodiment, the frequency domain is a coordinate system that describes the frequency characteristics of the signal. Exemplarily, the primary carrier signal is subjected to frequency domain division through the coordinate system to obtain a plurality of frequency domain signals, then the plurality of frequency domain signals are subjected to inverse fast fourier transform to convert the frequency domain signals into time domain signals (i.e., parallel signals), the plurality of time domain signals are transmitted into the power line analog channel, the plurality of time domain signals are transmitted to each target node based on a communication path generated by a routing algorithm, after the target node receives the plurality of time domain signals, the plurality of time domain signals are subjected to fast fourier transform to convert the time domain signals into frequency domain signals, and the plurality of frequency domain signals are restored into secondary carrier signals.
In the embodiment, the frequency domain division, the inverse fast fourier transform and the fast fourier transform are performed on the primary carrier signal, so that the carrier signal has the multipath fading resistance, and the carrier signal supports multi-user (target node) access, thereby realizing the station area identification of a plurality of target nodes and further improving the identification efficiency.
In one embodiment, transmitting a plurality of parallel signals into a powerline analog channel connecting target nodes comprises: dividing a bandwidth frequency band of a power line analog channel into a plurality of sub-channels; and transmitting a plurality of parallel signals to the target node on the center frequencies of the plurality of sub-channels.
Optionally, the bandwidth frequency band is divided into 128 sub-channels, each sub-channel has a bandwidth of 3.75kHz, and the carrier frequency signal is transmitted at the center frequency of every other sub-channel, that is, the measurement bandwidth is 7.5 kHz. By fully utilizing bandwidth resources through an OFDM modulation technology, the power line analog channel can bear and transmit more data in a wider frequency band, and the identification error caused by external noise and attenuation in the transmission process is reduced, so that the identification result is more accurate.
In order to implement the station area identification method corresponding to the above method embodiment, corresponding functions and technical effects are achieved. Referring to fig. 3, fig. 3 is a block diagram illustrating a structure of a station area identification apparatus according to an embodiment of the present application. For convenience of explanation, only a part related to the present embodiment is shown, and the station area identifying apparatus provided in the embodiment of the present application includes:
the determining module 301 is configured to determine an environmental noise signal of a preset power line channel based on an actually measured environmental parameter of an actual power line channel;
an incoming module 302, configured to transmit an ambient noise signal into a preset power line channel to obtain a power line analog channel;
a sending module 303, configured to send a primary carrier signal to a target node on a power line analog channel connected to the target node, where the primary carrier signal is received by the target node to obtain a secondary carrier signal;
and a determining module 304, configured to determine that the target node is a station area node if the primary carrier signal is consistent with the secondary carrier signal.
In one embodiment, the determining module 301 includes:
the acquisition unit is used for acquiring an actual environment noise signal of an actual channel of the power line;
and the modulation unit is used for modulating and separating the actual environment noise signal based on the orthogonal frequency division multiplexing technology to obtain the environment noise signal of the preset power line channel.
In an embodiment, the import module 302 includes:
and the coupling unit is used for coupling the environmental noise signal to a preset power line channel based on a preset filtering coupling circuit to obtain a power line analog channel.
In one embodiment, the sending module 303 includes:
the control unit is used for controlling the carrier signal transmitting end to transmit a primary carrier signal;
the device comprises a transformation unit, a frequency domain division unit and a fast Fourier inverse transformation unit, wherein the transformation unit is used for carrying out frequency domain division and fast Fourier inverse transformation on a primary carrier signal to obtain a plurality of parallel signals;
and the transmitting unit is used for transmitting the parallel signals into a power line analog channel connected with the target node, and the parallel signals are received by the target node and then are subjected to fast Fourier transform to be secondary carrier signals.
In one embodiment, an ingress unit includes:
the dividing subunit is used for dividing the bandwidth frequency band of the power line analog channel into a plurality of sub-channels;
and the transmitting subunit is used for transmitting the plurality of parallel signals to the target node on the center frequencies of the plurality of sub-channels.
In an embodiment, the station area identification apparatus further includes:
the first establishing module is used for establishing a preset power line channel based on the field programmable logic gate array, the digital-to-analog converter and the programmable attenuator;
and the second establishing module is used for establishing a communication channel model according to the preset power line channel, wherein the communication channel model comprises a modulation channel model and a coding channel model.
In an embodiment, the station area identification apparatus further includes:
and the generating module is used for generating a communication path between the distribution transformer and the target node based on a preset routing algorithm.
The station area identification device can implement the station area identification method of the method embodiment. The alternatives in the above-described method embodiments are also applicable to this embodiment and will not be described in detail here. The rest of the embodiments of the present application may refer to the contents of the above method embodiments, and in this embodiment, details are not described again.
Fig. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present application. As shown in fig. 4, the terminal device 105 of this embodiment includes: at least one processor 40 (only one shown in fig. 4), a memory 41, and a computer program 42 stored in the memory 41 and executable on the at least one processor 40, the processor 40 implementing the steps of any of the method embodiments described above when executing the computer program 42.
The terminal device 105 may be a computing device such as a host computer, a tablet computer, a desktop computer, or the like. The terminal device may include, but is not limited to, a processor 40, a memory 41. Those skilled in the art will appreciate that fig. 4 is merely an example of the terminal device 105, and does not constitute a limitation of the terminal device 105, and may include more or less components than those shown, or combine some of the components, or different components, such as may also include input-output devices, network access devices, etc.
The Processor 40 may be a Central Processing Unit (CPU), and the Processor 40 may be other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 41 may in some embodiments be an internal storage unit of the terminal device 105, such as a hard disk or a memory of the terminal device 105. In other embodiments, the memory 41 may also be an external storage device of the terminal device 105, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), or the like, provided on the terminal device 105. Further, the memory 41 may also include both an internal storage unit and an external storage device of the terminal device 105. The memory 41 is used for storing an operating system, an application program, a BootLoader (BootLoader), data, and other programs, such as program codes of the computer program. The memory 41 may also be used to temporarily store data that has been output or is to be output.
In addition, an embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements the steps in any of the method embodiments described above.
The embodiments of the present application provide a computer program product, which when running on a terminal device, enables the terminal device to implement the steps in the above method embodiments when executed.
In several embodiments provided herein, it will be understood that each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a terminal device to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above-mentioned embodiments are further detailed to explain the objects, technical solutions and advantages of the present application, and it should be understood that the above-mentioned embodiments are only examples of the present application and are not intended to limit the scope of the present application. It should be understood that any modifications, equivalents, improvements and the like, which come within the spirit and principle of the present application, may occur to those skilled in the art and are intended to be included within the scope of the present application.
Claims (10)
1. A method for identifying a distribution area, comprising:
determining an environmental noise signal of a preset power line channel based on the actually measured environmental parameters of the actual power line channel;
transmitting the environmental noise signal into the preset power line channel to obtain a power line simulation channel;
on the power line simulation channel connected with a target node, sending a primary carrier signal to the target node, wherein the primary carrier signal is received by the target node to obtain a secondary carrier signal;
and if the primary carrier signal is consistent with the secondary carrier signal, determining that the target node is a station area node.
2. The method for identifying a distribution area according to claim 1, wherein the determining the environmental noise signal of the predetermined power line channel based on the measured environmental parameters of the actual power line channel comprises:
acquiring an actual environment noise signal of the actual power line channel;
and modulating and separating the actual environment noise signal based on an orthogonal frequency division multiplexing technology to obtain the environment noise signal of the preset power line channel.
3. The method of claim 1, wherein said transmitting the ambient noise signal into the predetermined power line channel to obtain a power line analog channel comprises:
and coupling the environmental noise signal to the preset power line channel based on a preset filter coupling circuit to obtain the power line simulation channel.
4. The method of station area identification according to claim 1, wherein said transmitting a primary carrier signal to a target node over the power line analog channel to which the target node is connected comprises:
controlling a carrier signal transmitting end to transmit the primary carrier signal;
carrying out frequency domain division and inverse fast Fourier transform on the primary carrier signal to obtain a plurality of parallel signals;
and transmitting a plurality of parallel signals into the power line analog channel connected with the target node, and performing fast Fourier transform on the plurality of parallel signals after the parallel signals are received by the target node to obtain the secondary carrier signals.
5. The station area identifying method according to claim 4, wherein said introducing a plurality of said parallel signals into said power line analog channel connecting said target node comprises:
dividing the bandwidth frequency band of the power line analog channel into a plurality of sub-channels;
transmitting a plurality of the parallel signals to the target node on a center frequency of a plurality of the sub-channels.
6. The method for identifying a distribution area according to any one of claims 1 to 5, wherein before determining the environmental noise signal of the predetermined power line channel based on the measured environmental parameters of the actual power line channel, the method further comprises:
establishing the preset power line channel based on a field programmable logic gate array, a digital-to-analog converter and a program-controlled attenuator;
and establishing a communication channel model according to the preset power line channel, wherein the communication channel model comprises a modulation channel model and a coding channel model.
7. The station zone identifying method according to any one of claims 1 to 5, wherein before transmitting a carrier signal to a target node once on the power line analog channel to which the target node is connected, further comprising:
and generating a communication path between the distribution transformer and the target node based on a preset routing algorithm.
8. A station area identifying apparatus, comprising:
the determining module is used for determining an environmental noise signal of a preset power line channel based on the actually measured environmental parameters of the actual power line channel;
the transmitting module is used for transmitting the environmental noise signal into the preset power line channel to obtain a power line analog channel;
the transmitting module is used for transmitting a primary carrier signal to a target node on the power line analog channel connected with the target node, and the primary carrier signal is received by the target node to obtain a secondary carrier signal;
and the judging module is used for judging that the target node is the station area node if the primary carrier signal is consistent with the secondary carrier signal.
9. A terminal device, comprising a memory and a processor, wherein the memory stores computer readable instructions, and the processor executes the computer readable instructions to implement the steps of the station zone identification method according to any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that it stores a computer program which, when executed by a processor, implements the station zone identification method according to any one of claims 1 to 7.
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