Power line carrier communication enhancement method and system, carrier machine and wave trapper

Abstract

The invention discloses a power line carrier communication enhancement method and system, a carrier machine and a wave trapper. The method comprises the following steps: determining a target power line, acquiring information of the target power line and environmental data of the target power line in real time, correspondingly determining a distance grade and a power line topology complexity grade according to the length of the power line and a power line topology structure, and determining an environmental grade according to the environmental data; monitoring channel and signal state data and power line impedance data in real time; correspondingly and dynamically matching a first power line carrier communication enhancement strategy and a second power line carrier communication enhancement strategy according to the real-time output of the distance grade, the environment grade and the power line topology complexity grade of the target power line; and in combination with channel and signal state data and power line impedance data obtained by real-time monitoring, respectively applying matched enhancement strategies to complete power line carrier communication enhancement processing. According to the invention, an actual power line application scene can be considered, and effective long-distance power line carrier communication enhancement is realized.

Description

Technical Field

[0001] The present application relates to the technical field of power line carrier communication, and in particular to a power line carrier communication enhancement method, system, carrier machine and wave blocker. Background Art

[0002] Power line carrier communication is a technology that uses existing power lines to transmit data. It is widely used because it does not require additional communication lines. This technology can achieve efficient and economical data exchange over a large area, providing an important infrastructure for the automation and intelligence of power systems. Power line carrier communication not only plays a key role in power system automation control and remote meter reading systems, but is also widely used in smart home networks and large-scale power grid monitoring, greatly improving the operating efficiency and management level of these systems.

[0003] The existing power line carrier communication technology mainly uses a carrier machine to load high-frequency signals onto the power line for transmission, and uses devices such as wave traps, combined filters and coupling capacitors to improve the transmission quality and distance of the signal. Common means include using advanced modulation and demodulation technologies, such as FSK, PSK, etc., to improve the signal's anti-interference ability; using wave traps and combined filters to optimize the signal transmission path and reduce signal loss during transmission; and using coupling capacitors to achieve effective signal coupling and improve signal transmission efficiency.

[0004] However, although these methods have improved the quality of power line carrier communication to a certain extent, due to the inherent characteristics of power lines, such as high attenuation and complex impedance matching problems, especially in long-distance transmission, the signal strength will drop significantly, resulting in reduced communication quality, affecting the reliability and efficiency of data transmission. Even though there are problems in the existing technology such as reducing signal attenuation from the perspective of signal modulation and reducing signal reflection through impedance matching, most systems remain at the level of simple processing, without considering the actual power line application scenarios, and cannot effectively achieve the effect of enhancing power line carrier communication, thereby achieving more reliable and efficient data transmission. Summary of the invention

[0005] In order to take into account the actual power line application scenarios, realize effective long-distance power line carrier communication enhancement, and improve the reliability and efficiency of the communication process, the present application provides a power line carrier communication enhancement method, system, carrier machine and wave blocker.

[0006] In a first aspect, the present application provides a power line carrier communication enhancement method, comprising: Determine the target power line and obtain the target power line information in real time, determine the distance level according to the power line length in the target power line information and the preset power line length range; determine the power line topology complexity level according to the power line topology structure in the target power line information and the preset power line topology structure regulations; use sensors to collect the target power line's environmental data in real time, and determine the environmental level according to the target power line's environmental data and the preset environmental data range; Real-time monitoring of channel and signal status data and power line impedance data during power line carrier communication; Dynamically matching the first power line carrier communication enhancement strategy according to the real-time output of the distance level and the environmental level of the target power line; the first power line carrier communication enhancement strategy includes: adopting OFDM modulation technology, adopting improved OFDM modulation technology and OFDM modulation technology combined with MIMO technology; combining the channel and signal state data obtained by real-time monitoring, applying the matched first power line carrier communication enhancement strategy to complete the power line carrier communication enhancement processing; According to the real-time output of the power line topology complexity level of the target power line, the second power line carrier communication enhancement strategy is dynamically matched; the second power line carrier communication enhancement strategy includes: adaptive impedance matching technology, distributed adaptive impedance matching technology; combined with the power line impedance data obtained by real-time monitoring, the matched second power line carrier communication enhancement strategy is applied to complete the power line carrier communication enhancement processing.

[0007] By adopting the above scheme, the information of the target power line and the environment in which it is located is collected, the specific target power line application scenario is determined, the first power line carrier communication enhancement strategy is dynamically matched, and different signal modulation methods are adaptively used to effectively improve the signal's anti-attenuation ability and spectrum efficiency, ensuring the stability of long-distance transmission; at the same time, the second power line carrier communication enhancement strategy is matched, and different matching impedance matching technologies are adaptively used to reduce signal reflection, improve signal transmission efficiency, and enhance the adaptability and robustness of the system in complex power line networks.

[0008] Preferably, it also includes: According to the real-time output of the distance level, environmental level and power line topology complexity level of the target power line, dynamically match the third power line carrier communication enhancement strategy; the third power line carrier communication enhancement strategy includes: setting a preset signal strength threshold and gain parameter that corresponds to the combination of the distance level, environmental level and power line topology complexity level of different target power lines; Real-time monitoring of signal strength data output by a signal strength detection device located between a filter and a coupling capacitor in a power line; The acquired signal strength data is compared with a preset signal strength threshold in a matching third power line carrier communication enhancement strategy; if the signal strength is lower than the preset signal strength threshold, the signal amplification process is completed according to a gain parameter in a matching third power line carrier communication enhancement strategy.

[0009] By adopting the above scheme, based on the target power line application scenario, the third power line carrier communication enhancement strategy is dynamically matched, combined with the real-time monitoring of the signal strength data between the filter and the coupling capacitor, when the signal strength is lower than the preset threshold, the signal amplification processing is completed according to the gain parameter, thereby ensuring the stability and strength of the signal in long-distance transmission, effectively solving the signal attenuation problem, and improving the communication quality.

[0010] Preferably, it also includes: Based on the acquired target power line information and the power line environment data, real-time monitoring is performed to determine whether an unstable external event occurs; the unstable external event includes: a continuous change in the power line topology structure in the target power line information within a first preset time or a continuous change in the target power line environment data within a first preset time; In order to determine the occurrence of an unstable external event, known environmental data at a future time is obtained or the environmental data at a future time is predicted using a pre-built first neural network, and the channel and signal state data at a future time is predicted using a pre-built second neural network; the environmental level is determined according to the predicted environmental data, and the first power line carrier communication enhancement strategy is matched accordingly; the second neural network model is generated by training the environmental data and the channel and signal state data at different times during the historical power line carrier communication process; Synchronously obtain preset power topology data at a future time or use the constructed third neural network to predict the power line topology at a future time, and use the pre-constructed fourth neural network to predict the power line impedance data at a future time; determine the power line topology complexity level according to the predicted power line topology, and correspond to the second power line carrier communication enhancement strategy; the fourth neural network model is generated by training the power line topology complexity level and power line impedance data at different times in the historical power line carrier communication process; In combination with the predicted channel and signal state data, a matching first power line carrier communication enhancement strategy is applied to pre-complete the power line carrier communication enhancement processing; in combination with the predicted power line impedance data, a matching second power line carrier communication enhancement strategy is applied to pre-complete the power line carrier communication enhancement processing.

[0011] By adopting the above scheme, taking into account the unstable impact of continuous changes in power line topology or environmental data on power line carrier communication, unstable external events in the power line carrier communication process are monitored in real time, and then the application scenarios at future moments are predicted. According to the prediction results, the appropriate power line carrier communication enhancement strategy is matched in advance, which improves the adaptability and robustness of the system and ensures that stable communication performance can be maintained in a complex and changeable power line environment.

[0012] Preferably, it also includes: Obtaining a security level of target power line carrier communication; the security level includes general and important; A fourth power line carrier communication enhancement strategy is matched according to the obtained security level of the power line carrier communication; the fourth power line carrier communication enhancement strategy: the security level is generally adopted in which primary encryption technology and low-level error checking are integrated in the carrier machine, and the security level is adopted in important cases in which advanced technology and advanced error checking are integrated in the carrier machine; The power line carrier communication safety performance enhancement process is completed using the matched fourth power line carrier communication enhancement strategy.

[0013] By adopting the above scheme, taking into account the different security requirements for signal data transmission in the power line carrier communication process of different targets, adaptive matching encryption technology and error checking technology and other communication security enhancement strategies are used to improve the security and reliability of power line carrier communication while minimizing the complexity of verification.

[0014] Preferably, it also includes: Obtain the target power line's operating voltage level and operating frequency band type and the real-time requirements for the target power line carrier communication; The fifth power line carrier communication enhancement strategy is matched according to the obtained working voltage level, working frequency band type and real-time requirement combination; the fifth power line carrier communication enhancement strategy includes: selecting to use equalizer technology for signal compensation under the conditions of high voltage level, low frequency band type and low real-time requirement, selecting to use pre-distortion compensation technology for signal compensation under the conditions of low voltage level, high frequency band type and high real-time requirement, and not performing signal compensation in other combinations.

[0015] By adopting the above scheme, taking into account the different working voltage levels and working frequency band types of different target power line carrier communications and the different real-time requirements for signal data transmission, different signal compensation technologies are adaptively matched to improve the quality of signal transmission.

[0016] Preferably, it also includes: Receive in real time the signal quality evaluation result fed back by the receiving end corresponding to the target power line carrier communication, and determine whether there is a signal quality evaluation result lower than the preset signal quality evaluation result received for a second preset time. If so, use the backup sensor to collect the power line environment data in real time at the next moment, so as to complete the determination of the environment level; and obtain the power line topology structure in the target power line information at the next moment and repeat the verification operation to obtain the successfully verified power line structure topology, so as to complete the determination of the power line structure topology complexity level.

[0017] By adopting the above scheme, the changes in communication quality are monitored in real time. If low-quality communication still exists within a preset time period after adopting applicable signal modulation and impedance matching, it may be due to a failure of the environmental data acquisition sensor or an error in the collected target power line information, which affects the judgment of subsequent enhancement strategies. Therefore, backup sensors or information repeated verification operations are used to ensure the correct adoption of enhancement strategies and improve communication quality.

[0018] Preferably, after the environmental data of the target power line is collected in real time by using the sensor, and the environmental level is determined according to the environmental data of the target power line and the preset environmental data range, it also includes: judging whether the environmental level determined according to the environmental data collected at the current moment is the same as the environmental level determined at the previous moment; if they are the same, directly using the first power line carrier communication enhancement strategy matched at the previous moment as the first power line carrier communication enhancement strategy at the current moment, instead of dynamically matching the first power line carrier communication enhancement strategy according to the real-time output of the distance level and the environmental level of the target power line; After the target power line information is acquired in real time, it also includes: judging whether the power line topology complexity level determined according to the power line topology structure in the target power line information acquired at the current moment and the preset power line topology structure is the same as the power line topology complexity level determined at the previous moment; if they are the same, directly using the second power line carrier communication enhancement strategy matched at the previous moment as the second power line carrier communication enhancement strategy matched at the current moment, instead of dynamically matching the second power line carrier communication enhancement strategy according to the real-time output of the power line topology complexity level of the target power line.

[0019] By adopting the above scheme, the changes in the environmental data and power line topology of the power lines are monitored in real time. If there is no change compared with the previous moment, the communication enhancement strategy matched at the previous moment is directly used, avoiding unnecessary repeated calculation and matching processes, and improving the response speed and processing efficiency of the system.

[0020] In a second aspect, the present application provides a power line carrier communication enhancement system, comprising: The power line carrier communication level data acquisition module is used to determine the target power line and obtain the target power line information in real time, determine the distance level according to the power line length in the target power line information and the preset power line length range; determine the power line topology complexity level according to the power line topology structure in the target power line information and the preset power line topology structure regulations; use sensors to collect the target power line environment data in real time, and determine the environment level according to the target power line environment data and the preset environment data range; Power line carrier communication data monitoring module, used for real-time monitoring of channel and signal status data and power line impedance data during power line carrier communication; A power line carrier communication enhancement processing module is used to dynamically match a first power line carrier communication enhancement strategy according to the real-time output of the distance level and the environment level of the target power line; the first power line carrier communication enhancement strategy includes: using OFDM modulation technology, using improved OFDM modulation technology and OFDM modulation technology combined with MIMO technology; combining the channel and signal status data obtained by real-time monitoring, applying the matched first power line carrier communication enhancement strategy to complete the power line carrier communication enhancement processing; according to the real-time output of the power line topology complexity level of the target power line, dynamically matching the second power line carrier communication enhancement strategy; the second power line carrier communication enhancement strategy includes: adaptive impedance matching technology, distributed adaptive impedance matching technology; combining the power line impedance data obtained by real-time monitoring, applying the matched second power line carrier communication enhancement strategy to complete the power line carrier communication enhancement processing.

[0021] By adopting the above solution, the information and environmental data of the target power line are collected in real time, and different enhancement strategies are adaptively matched to cope with different environmental and topological conditions. By using matching signal modulation methods and impedance matching technology, the signal's anti-attenuation ability is improved and signal reflection is reduced.

[0022] In a third aspect, the present application provides a carrier machine applied to the above-mentioned power line carrier communication enhancement system; the carrier machine is used to complete signal modulation and transmission by adopting the channel and signal status data obtained by combining real-time monitoring and applying a matching first power line carrier communication enhancement strategy.

[0023] In a fourth aspect, the present application provides a wave trap applied to the above-mentioned power line carrier communication enhancement system; the wave trap is used to use power line impedance data obtained in combination with real-time monitoring and apply a matching second power line carrier communication enhancement strategy to complete impedance adjustment.

[0024] In summary, this application has the following beneficial effects: 1. Considering the different environmental and topological conditions faced during the target power line carrier communication process, and the different signal attenuation and signal interference levels, the target power line information and environmental data are collected in real time to determine the specific application scenario, dynamically match the appropriate signal modulation method to improve the signal anti-attenuation ability, and dynamically match the appropriate impedance matching method to reduce signal reflection and signal interference; in addition, dynamically match the appropriate signal strength preset threshold and gain parameters, combined with the real-time monitoring of the signal strength data between the filter and the coupling capacitor, accurately complete the signal amplification process and enhance the communication quality; 2. Based on the changes in the power line topology or environmental data, monitor the instability of the communication process caused by external factors. Once an unstable event is detected, predict the channel and signal status data and power line impedance data at the future moment, and then complete the power line carrier communication enhancement processing in advance to ensure the quality and stability of signal transmission to reach the best state; 3. In combination with the security requirements of the target power line carrier communication and the real-time requirements for signal data transmission under actual operating conditions, encryption and error checking technologies with different security levels are adaptively adopted to enhance the signal; different signal compensation technologies are adaptively adopted to enhance the communication quality while avoiding unnecessary waste of resources and complexity. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a flow chart of the power line carrier communication enhancement method described in a specific embodiment; Figure 2 It is a structural schematic diagram of the power line carrier communication enhancement system described in a specific embodiment. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0027] like Figure 1 As shown, the embodiment of the present application discloses a method for enhancing power line carrier communication, including: S1. Determine the target power line and obtain the target power line information and its environment data in real time.

[0028] Specifically, the target power line is determined. Since the main problem to be solved in the present application is the high attenuation and complex impedance matching problems in long-distance power line carrier communication, the target power lines that need to be communicated are determined by a positioning system or other sensors to be long-distance power lines that are greater than a preset minimum power line length; wherein the preset minimum power line length is set according to the specific situation determined by various factors such as power transmission demand, geographical environment, economic conditions, etc., and may be tens of kilometers or hundreds of kilometers.

[0029] Through the GPS positioning system and the connection to the power line system, the target power line information is queried and acquired in real time, wherein the target power line information includes: the actual length of the target power line, the geographical location information of the power line, and the power line topology structure.

[0030] The sensors collect the environmental data of the power line in real time, including parameters that affect power line carrier communication, such as temperature, humidity, and wind speed.

[0031] S2. Determine the application scenario of the target power line.

[0032] Specifically, considering that the longer the actual length of the long-distance power line is, the greater the degree of signal attenuation generated is, the preset power line length range is further divided and set according to the preset minimum power line length corresponding to the target power line, such as: a first preset power line length range that gradually increases in length (greater than the preset minimum power line length and less than 1.5 times the preset minimum power line length), a second preset power line length range (greater than 1.5 times the preset minimum power line length and less than 2 times the preset minimum power line length) and a third preset power line length range (greater than 2 times the preset minimum power line length), which correspond to matching basic long distance levels, medium long distance levels and ultra-long distance levels respectively; the distance level is determined by comparing the power line length in the target power line information obtained in real time with the preset power line length range.

[0033] Considering that the target power line may have some faulty power line topology nodes under maintenance during the actual communication process, resulting in a reduction in the complexity of the power line topology structure, it is necessary to query and obtain the power line topology structure in the target power line information in real time according to the inspection results in the power line system, and further compare the power line topology structure in the queried target power line information with the preset power line topology structure regulations. Determine the power line topology complexity level. The preset power line topology structure provisions include: a first preset power line topology structure range and a second preset power line topology structure range set according to the number of nodes and edges in the power line topology structure and the connectivity of the nodes, corresponding to and matching the general and complex power line topology complexity levels, respectively.

[0034] Considering the impact of environmental factors on power line carrier communication, the worse the environment, the greater the impact, so a preset environmental data range is set, including: a first preset environmental data range, a second preset environmental data range (such as: the temperature is 30-33 degrees Celsius or the wind speed is between level 5 and level 6) and a third preset environmental data range (such as: the temperature is greater than 33 degrees Celsius or the wind speed is above level 6), which correspond to the ideal environmental level, the general harsh environmental level and the severe harsh environmental level respectively. The real-time collected power line environmental data is compared with the preset environmental data range to determine whether the real-time collected power line environmental data is in the preset environmental data range and determine the environmental level.

[0035] S3. Real-time monitoring of channel and signal status data and power line impedance data during power line carrier communication.

[0036] Specifically, the channel and signal status data of the power line carrier communication are monitored in real time by a signal monitoring device, and the channel status data of the power line carrier communication includes: channel quality (poor quality, general quality, good quality and high quality) and channel occupancy (occupancy rate), which is weighted and evaluated by parameters such as the noise level, attenuation, distortion and other parameters of the channel and compared with the preset channel quality evaluation value range; the signal status data of the power line carrier communication includes: signal strength, signal quality (poor quality, general quality, good quality and high quality), which is weighted and evaluated by parameters such as the signal-to-noise ratio, bit error rate and attenuation rate of the received signal and compared with the preset signal quality evaluation value range; in this embodiment, the channel and signal status data in the process of real-time monitoring of the power line carrier communication includes channel quality and signal quality. The impedance value of the power line is monitored in real time by an impedance measuring device.

[0037] S4. Dynamically match the first power line carrier communication enhancement strategy according to the real-time output of the distance level and the environment level of the target power line.

[0038] For different real-time output combinations of distance level and environmental level of the target power line, a first power line carrier communication enhancement strategy is set to match it; the first power line carrier communication enhancement strategy includes: using OFDM modulation technology, using improved OFDM modulation technology and using OFDM modulation technology combined with MIMO technology.

[0039] Specifically, the different real-time output combinations of the distance level and environmental level of the target power line mainly include: the first type of real-time output combination matching the OFDM modulation technology: basic long distance level and ideal environmental level, medium long distance level and ideal environmental level, ultra long distance level and ideal environmental level, basic long distance level and general harsh environmental level; the second type of real-time output combination matching the improved OFDM modulation technology: medium long distance level and general harsh environmental level, ultra long distance level and general harsh environmental level; the third type of real-time output combination: basic long distance level and severe harsh environmental level, medium long distance level and severe harsh environmental level, ultra long distance level and severe harsh environmental level.

[0040] Among them, the use of OFDM modulation technology specifically includes: converting high-speed data signals into parallel low-speed sub-data streams, modulating them to be transmitted on each subchannel. The improved OFDM modulation technology specifically includes: intelligently optimizing OFDM key parameters (such as bandwidth and number of subcarriers) according to channel conditions. If the channel quality is poor or average, the preset bandwidth is reduced or the preset number of subcarriers is increased accordingly, or combined with channel conditions, OFDM is combined with dynamic subcarrier allocation technology to complete the dynamic adjustment of the modulation mode and the selection of the coding strategy, wherein the modulation modes include: BPSK, QPSK, 16-QAM, 64-QAM, etc., and the coding strategies include: convolutional code, TURBO code, LDPC; different signal qualities and signal quality combinations are preset with matching modulation modes and coding strategies, such as: when the channel quality or signal quality is good, the 64-QAM modulation mode and LDPC coding mode are used. The OFDM modulation technology combined with MIMO technology includes: using spatial diversity reception technology and beamforming technology to send and receive signals according to the channel and signal status, and using improved OFDM modulation technology to modulate the signal; wherein, different combinations of signal quality and signal quality are preset with matching signal sending and receiving strategies, such as: using spatial diversity reception technology and beamforming technology when both the channel quality and the signal quality are poor, or using spatial diversity reception technology or beamforming technology when one of the channel quality and the signal quality is poor or both are average.

[0041] Combined with the channel and signal status data obtained through real-time monitoring, the current channel quality and signal quality are judged, and the power line carrier communication enhancement processing is completed according to the specific signal modulation method in the first power line carrier communication enhancement strategy matched by the corresponding application.

[0042] S5. Dynamically match the second power line carrier communication enhancement strategy according to the real-time output of the power line topology complexity level of the target power line.

[0043] For different real-time outputs of the power line topology complexity level of the target power line, a second power line carrier communication enhancement strategy matching the target power line is provided; the second power line carrier communication enhancement strategy includes: adaptive impedance matching technology and distributed adaptive impedance matching technology.

[0044] Specifically, when the real-time output of the power line topology complexity level of the target power line is general, the corresponding adaptive impedance matching technology is used to complete the impedance matching of the power line; the adaptive impedance matching technology includes: according to the adaptive impedance matching circuit equipped with the wave trap in the target power line, combined with the real-time detection of the impedance change of the power line, automatically adjust its own impedance to reduce signal reflection. When the real-time output of the power line topology complexity level of the target power line is complex, the corresponding distributed adaptive impedance matching technology is used to complete the impedance matching of the power line; the distributed adaptive impedance matching technology includes: deploying multiple impedance matchers at key nodes in the power line topology structure to form a distributed impedance matching structure, and using an intelligent collaborative algorithm to achieve collaborative adjustment of multiple impedance matchers to achieve a globally optimal impedance matching effect.

[0045] Combined with the power line impedance data obtained by real-time monitoring, when the power line impedance data changes, the second power line carrier communication enhancement strategy is promptly applied to complete the impedance matching calculation, and the output impedance is adjusted according to the calculation result to complete the power line carrier communication enhancement processing.

[0046] In a specific embodiment, considering adding a signal enhancement module to the filter and the coupling capacitor, and combining the actual application scenario of power line carrier communication, the signal amplification strength is controlled accordingly to further ensure the stability of the signal over a long distance while ensuring the signal transmission rate as much as possible; the method also includes: According to the real-time output of the distance level, environmental level and power line topology complexity level of the target power line, the third power line carrier communication enhancement strategy is dynamically matched; the third power line carrier communication enhancement strategy includes: setting signal strength preset thresholds and gain parameters that correspond to the combinations of distance levels, environmental levels and power line topology complexity levels of different target power lines; specifically, setting a first signal strength preset threshold and a first gain parameter that correspond to the real-time output combination of ultra-long distance level, severe harsh environment level and complex power line topology complexity level, and a second signal strength preset threshold and a second gain parameter that correspond to the combinations other than the above-mentioned real-time output combination, wherein the first signal strength preset threshold is less than the second signal strength preset threshold, and the first gain parameter is greater than the second gain parameter.

[0047] Real-time monitoring of signal strength data output by a signal strength detection device located between the filter and the coupling capacitor in the power line.

[0048] The acquired signal strength data is compared with a preset signal strength threshold in a matching third power line carrier communication enhancement strategy; if the signal strength is lower than the preset signal strength threshold, the signal amplification process is completed according to a gain parameter in a matching third power line carrier communication enhancement strategy.

[0049] In a specific embodiment, by introducing intelligent network analysis technology, the topology structure and environmental data of the power line are monitored in real time, the future environment and channel status are predicted, and the parameter settings of the wave blocker and the combined filter are optimized in advance, thereby further improving the adaptability and robustness of the system, reducing signal distortion and interference, and improving the overall communication quality; the method also includes: According to the acquired target power line information and the environmental data of the power line, real-time monitoring is performed to determine whether unstable external events occur. Wherein, the unstable external events include: the power line topology structure in the target power line information continuously changes within the first preset time or the environmental data of the target power line continuously changes within the first preset time; wherein, the first preset time can be specifically set according to expert advice; in order to more accurately determine the occurrence of unstable factors, the continuous change of the power line topology structure does not include: the number of changes in nodes and edges is lower than the preset number of changes in nodes and edges; the continuous change of the environmental data of the target power line within the first preset time does not include: the change in the environmental data value is lower than the preset environmental change value.

[0050] In order to determine the occurrence of an unstable external event, known environmental data at a future time is obtained (e.g., connecting to a weather forecast system to collect known environmental data at a future time) or a pre-built first neural network is used to predict environmental data at a future time. The first neural network model adopts an LSTM neural network, and the input is environmental data during the power line carrier communication process within a first preset time period in history, and the output is environmental data at a future time, which is generated through training with historical environmental data; wherein the future time can be set manually; A pre-constructed second neural network is used to predict channel and signal status data at future times; the environmental level and the distance level of the target power line are determined based on the predicted environmental data (generally the actual length of the target power line will not change), and the first power line carrier communication enhancement strategy is matched accordingly; the second neural network model input is the environmental data and channel and signal status data during the power line carrier communication process within a historical first preset time period, and the environmental data at future times, and the output is the channel and signal status data at future times, which is generated through training with the environmental data and channel and signal status data at different times during the historical power line carrier communication process.

[0051] Synchronously acquiring preset power topology data at a future time (such as determining the preset power topology data at a future time according to power line maintenance information) or using a constructed third neural network to predict the power line topology at a future time, wherein the third neural network adopts an LSTM neural network, the input of which is the power line topology during the power line carrier communication process within a first preset time period in history, and the output of which is the power line topology at a future time, which is generated through historical power line topology training; A fourth neural network constructed in advance is used to predict power line impedance data at future times; a power line topology complexity level is determined according to the predicted power line topology structure, and a second power line carrier communication enhancement strategy is matched accordingly; the fourth neural network model is input with the power line topology complexity level and power line impedance data during the power line carrier communication process within a first preset time period in history, and output with the power line impedance data at future times, which is generated through training of the power line topology complexity level and power line impedance data at different times during the historical power line carrier communication process; In combination with the predicted channel and signal status data, a matching first power line carrier communication enhancement strategy is applied to pre-complete the power line carrier communication enhancement processing; in combination with the predicted power line impedance data, a matching second power line carrier communication enhancement strategy is applied according to the predicted power line impedance data to pre-complete the power line carrier communication enhancement processing.

[0052] In a specific embodiment, considering the enhanced security of power line carrier communication and the different security requirements of different target power line carrier communications, different security enhancement measures are adaptively adopted; the method includes: The security level of the power line carrier communication is determined according to its importance. The security level is general and important; for example, the power line carrier communication used for home automation system can be classified as general level, while the power line carrier communication used for power grid monitoring can be classified as important level.

[0053] Obtain the security level of the target power line carrier communication; match the fourth power line carrier communication enhancement strategy according to the obtained security level of the power line carrier communication; the fourth power line carrier communication enhancement strategy: the security level is the integration of primary encryption technology (such as DES (Data Encryption Standard) and Triple DES) and low-level error checking (such as parity check) in the carrier machine under normal circumstances, and the security level is the integration of advanced technology (such as AES) and advanced error checking (such as cyclic redundancy check (CRC)) in the carrier machine under important circumstances; use the matched fourth power line carrier communication enhancement strategy to complete the power line carrier communication security performance enhancement processing.

[0054] In addition, according to the actual needs under different working conditions, a suitable power line carrier communication enhancement strategy is dynamically matched to improve the adaptability and flexibility of communication. The method also includes: Obtain the operating voltage level and operating frequency band type of the target power line and the real-time requirements for the target power line carrier communication; the operating voltage level includes: low voltage level, medium voltage level and high voltage level; the operating frequency band type includes: low frequency band type and high frequency band type; the real-time requirements for the target power line carrier communication include: low real-time requirements and high real-time requirements.

[0055] The fifth power line carrier communication enhancement strategy is matched according to the obtained working voltage level, working frequency band type and real-time requirement combination; the fifth power line carrier communication enhancement strategy includes: selecting to use equalizer technology for signal compensation under the conditions of high voltage level, low frequency band type and low real-time requirement, selecting to use pre-distortion compensation technology for signal compensation under the conditions of low voltage level, high frequency band type and high real-time requirement, and not performing signal compensation in other combinations.

[0056] In a specific embodiment, considering that in the process of power line carrier communication, there may be a failure in the matching strategy due to a failure of the monitored sensor or an error in the power line topology structure queried in real time from the power line system, which may lead to poor transmission data quality, in order to avoid such a situation, the method further includes: Receive in real time the signal quality assessment result fed back by the receiving end corresponding to the target power line carrier communication, and determine whether there is a signal quality assessment result received continuously for a second preset time that is lower than the preset signal quality assessment result; wherein the signal quality assessment result fed back by the receiving end can be obtained by performing quality assessment and weighted processing based on parameters such as the signal-to-noise ratio and bit error rate fed back by the receiving end.

[0057] If it exists, then at the next moment, the backup sensor is used to collect the environmental data of the power line in real time, thereby completing the determination of the environmental level; and after obtaining the power line topology structure in the target power line information at the next moment, the verification operation is repeated to obtain the successfully verified power line structure topology, thereby completing the determination of the power line structure topology complexity level. Among them, after obtaining the power line topology structure in the target power line information at the next moment, the verification operation is repeated to obtain the power line topology structure that is successfully verified, thereby completing the determination of the power line structure topology complexity level. Among them, after obtaining the power line topology structure in the target power line information at the next moment, the similarity of the power line topology structure in the target power line information at the next moment obtained twice is compared, and if it is greater than the preset similarity, then the verification is deemed to be successful.

[0058] In a specific embodiment, in order to avoid unnecessary repeated calculation and matching processes and improve the response speed and processing efficiency of the system, the method further includes: After the environmental data of the target power line is collected in real time by using the sensor, and the environmental level is determined according to the environmental data of the target power line and the preset environmental data range, it also includes: judging whether the environmental level determined according to the environmental data collected at the current moment is the same as the environmental level determined at the previous moment; if they are the same, directly using the first power line carrier communication enhancement strategy matched at the previous moment as the first power line carrier communication enhancement strategy at the current moment, instead of dynamically matching the first power line carrier communication enhancement strategy according to the real-time output of the distance level and the environmental level of the target power line; After the target power line information is acquired in real time, it also includes: judging whether the power line topology complexity level determined according to the power line topology structure in the target power line information acquired at the current moment and the preset power line topology structure is the same as the power line topology complexity level determined at the previous moment; if they are the same, directly using the second power line carrier communication enhancement strategy matched at the previous moment as the second power line carrier communication enhancement strategy matched at the current moment, instead of dynamically matching the second power line carrier communication enhancement strategy according to the real-time output of the power line topology complexity level of the target power line.

[0059] like Figure 2 As shown, the embodiment of the present application discloses a power line carrier communication enhancement system, including: The power line carrier communication level data acquisition module 101 is used to determine the target power line and obtain the target power line information in real time, determine the distance level according to the power line length in the target power line information and the preset power line length range; determine the power line topology complexity level according to the power line topology structure in the target power line information and the preset power line topology structure regulations; use sensors to collect the target power line environment data in real time, and determine the environment level according to the target power line environment data and the preset environment data range; A power line carrier communication data monitoring module 102 is used to monitor the channel and signal status data and power line impedance data in the power line carrier communication process in real time; The power line carrier communication enhancement processing module 103 is used to dynamically match the first power line carrier communication enhancement strategy according to the real-time output of the distance level and the environment level of the target power line; the first power line carrier communication enhancement strategy includes: adopting OFDM modulation technology, adopting improved OFDM modulation technology and OFDM modulation technology combined with MIMO technology; combining the channel and signal status data obtained by real-time monitoring, applying the matched first power line carrier communication enhancement strategy to complete the power line carrier communication enhancement processing; according to the real-time output of the power line topology complexity level of the target power line, dynamically matching the second power line carrier communication enhancement strategy; the second power line carrier communication enhancement strategy includes: adaptive impedance matching technology, distributed adaptive impedance matching technology; combining the power line impedance data obtained by real-time monitoring, applying the matched second power line carrier communication enhancement strategy to complete the power line carrier communication enhancement processing.

[0060] The system further comprises: The power line carrier communication pre-enhancement processing module 104 is used to monitor in real time whether an unstable external event occurs based on the acquired target power line information and the power line environment data; the unstable external event includes: the power line topology structure in the target power line information continues to change within the first preset time or the target power line environment data continues to change within the first preset time; when it is judged that an unstable external event occurs, the known environmental data at a future time is obtained or the environmental data at a future time is predicted using a pre-built first neural network, and the channel and signal state data at a future time is predicted using a pre-built second neural network; the environmental level is determined based on the predicted environmental data, and the first power line carrier communication enhancement strategy is matched accordingly; the second neural network model is based on the environmental data at different times in the historical power line carrier communication process and the environmental data at different times in the historical power line carrier communication process. Channel and signal status data are trained and generated; preset power topology data for future moments are synchronously acquired or the power line topology for future moments is predicted by using the constructed third neural network, and the power line impedance data for future moments is predicted by using the pre-constructed fourth neural network; the power line topology complexity level is determined according to the predicted power line topology, and a second power line carrier communication enhancement strategy is matched accordingly; the fourth neural network model is generated through training of the power line topology complexity level and power line impedance data at different moments in the historical power line carrier communication process; in combination with the predicted channel and signal status data, a matched first power line carrier communication enhancement strategy is applied to pre-complete the power line carrier communication enhancement processing; in combination with the predicted power line impedance data, a matched second power line carrier communication enhancement strategy is applied to pre-complete the power line carrier communication enhancement processing.

[0061] In a specific embodiment, the power line carrier communication enhancement processing module 103 in the system is also used to dynamically match the third power line carrier communication enhancement strategy according to the real-time output of the distance level, environmental level and power line topology complexity level of the target power line; the third power line carrier communication enhancement strategy includes: setting a signal strength preset threshold and gain parameter that corresponds to a combination of different target power line distance levels, environmental levels and power line topology complexity levels; real-time monitoring of the signal strength data output by the signal strength detection device located between the filter and the coupling capacitor in the power line; comparing the acquired signal strength data with the signal strength preset threshold in the matched third power line carrier communication enhancement strategy; if it is lower than the matched signal strength preset threshold, completing the signal amplification processing according to the gain parameter in the matched third power line carrier communication enhancement strategy.

[0062] In a specific embodiment, the power line carrier communication enhancement processing module 103 in the system is also used to obtain the security level of the target power line carrier communication; the security level includes general and important; the fourth power line carrier communication enhancement strategy is matched according to the obtained security level of the power line carrier communication; the fourth power line carrier communication enhancement strategy: the security level is generally adopted in the case of integrating primary encryption technology and low-level error checking in the carrier machine, and the security level is important in the case of integrating advanced technology and advanced error checking in the carrier machine; the power line carrier communication security is completed by using the matched fourth power line carrier communication enhancement strategy. Full performance enhancement processing; also used to obtain the working voltage level and working frequency band type of the target power line and the real-time requirements for the target power line carrier communication; according to the obtained working voltage level, working frequency band type and real-time requirement combination, the fifth power line carrier communication enhancement strategy is matched; the fifth power line carrier communication enhancement strategy includes: under the conditions of high voltage level, low frequency band type and low real-time requirement, the equalizer technology is selected for signal compensation, under the conditions of low voltage level, high frequency band type and high real-time requirement, the pre-distortion compensation technology is selected for signal compensation, and no signal compensation is performed in other combinations.

[0063] In a specific embodiment, the power line carrier communication level data acquisition module 101 in the system is also used to receive in real time the signal quality evaluation result fed back by the receiving end corresponding to the target power line carrier communication, and determine whether there is a signal quality evaluation result received continuously for a second preset time that is lower than the preset signal quality evaluation result. If so, at the next moment, the backup sensor is used to collect the power line environment data in real time to complete the determination of the environment level; and at the next moment, after obtaining the power line topology structure in the target power line information, repeat the acquisition and verification operation to obtain the successfully verified power line structure topology, and then complete the determination of the power line structure topology complexity level.

[0064] In a specific embodiment, the power line carrier communication enhancement processing module 103 in the system is also used for, after the target power line environment data is collected in real time by using the sensor, and the environment level is determined according to the target power line environment data and the preset environment data range, it also includes: judging whether the environment level determined according to the environment data collected at the current moment is the same as the environment level determined at the previous moment; if they are the same, directly using the first power line carrier communication enhancement strategy matched at the previous moment as the first power line carrier communication enhancement strategy at the current moment, instead of dynamically matching the first power line carrier communication enhancement strategy according to the real-time output of the distance level and the environment level of the target power line; after the real-time acquisition of the target power line information, it also includes: judging whether the power line topology complexity level determined according to the power line topology structure in the target power line information obtained at the current moment and the preset power line topology structure is the same as the power line topology complexity level determined at the previous moment; if they are the same, directly using the second power line carrier communication enhancement strategy matched at the previous moment as the second power line carrier communication enhancement strategy matched at the current moment, instead of dynamically matching the second power line carrier communication enhancement strategy according to the real-time output of the power line topology complexity level of the target power line.

[0065] An embodiment of the present application also discloses a carrier machine applied to the above-mentioned power line carrier communication enhancement system; the carrier machine is used to complete signal modulation and transmission by combining channel and signal status data obtained by real-time monitoring and applying a matching first power line carrier communication enhancement strategy.

[0066] The embodiment of the present application also discloses a wave trap applied to the above-mentioned power line carrier communication enhancement system; the wave trap is used to use power line impedance data obtained in combination with real-time monitoring and apply a matching second power line carrier communication enhancement strategy to complete impedance adjustment.

[0067] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Any feature disclosed in this specification (including the abstract and drawings), unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

Claims

1. A method for enhancing power line carrier communication, characterized in that: include: Determine the target power line and obtain the target power line information in real time, and determine the distance level according to the power line length in the target power line information and the preset power line length range; Determine the power line topology complexity level according to the power line topology structure in the target power line information and the preset power line topology structure regulations; use sensors to collect the target power line's environmental data in real time, and determine the environmental level according to the target power line's environmental data and the preset environmental data range; Real-time monitoring of channel and signal status data and power line impedance data during power line carrier communication; Dynamically matching the first power line carrier communication enhancement strategy according to the real-time output of the distance level and the environment level of the target power line; The first power line carrier communication enhancement strategy includes: using OFDM modulation technology, using improved OFDM modulation technology and OFDM modulation technology combined with MIMO technology; combining channel and signal status data obtained by real-time monitoring, applying the matching first power line carrier communication enhancement strategy to complete power line carrier communication enhancement processing; According to the real-time output of the power line topology complexity level of the target power line, the second power line carrier communication enhancement strategy is dynamically matched; the second power line carrier communication enhancement strategy includes: adaptive impedance matching technology, distributed adaptive impedance matching technology; combined with the power line impedance data obtained by real-time monitoring, the matched second power line carrier communication enhancement strategy is applied to complete the power line carrier communication enhancement processing.

2. The power line carrier communication enhancement method according to claim 1, characterized in that: Also includes: Dynamically matching the third power line carrier communication enhancement strategy according to the real-time output of the distance level, environment level and power line topology complexity level of the target power line; The third power line carrier communication enhancement strategy includes: setting a preset signal strength threshold and gain parameter that matches the distance level, environment level and power line topology complexity level combination of different target power lines; Real-time monitoring of signal strength data output by a signal strength detection device located between a filter and a coupling capacitor in a power line; The acquired signal strength data is compared with a preset signal strength threshold in a matching third power line carrier communication enhancement strategy; if the signal strength is lower than the preset signal strength threshold, the signal amplification process is completed according to a gain parameter in a matching third power line carrier communication enhancement strategy.

3. The power line carrier communication enhancement method according to claim 1, characterized in that: Also includes: Based on the acquired target power line information and the power line environment data, real-time monitoring is performed to determine whether unstable external events occur; The unstable external event includes: a continuous change in the power line topology structure in the target power line information within a first preset time or a continuous change in the environment data of the target power line within a first preset time; In order to determine the occurrence of an unstable external event, known environmental data at a future time is obtained or the environmental data at a future time is predicted using a pre-built first neural network, and the channel and signal state data at a future time is predicted using a pre-built second neural network; the environmental level is determined according to the predicted environmental data, and the first power line carrier communication enhancement strategy is matched accordingly; the second neural network model is generated by training the environmental data and the channel and signal state data at different times during the historical power line carrier communication process; Synchronously obtain preset power topology data at a future time or use the constructed third neural network to predict the power line topology at a future time, and use the pre-constructed fourth neural network to predict the power line impedance data at a future time; determine the power line topology complexity level according to the predicted power line topology, and correspond to the second power line carrier communication enhancement strategy; the fourth neural network model is generated by training the power line topology complexity level and power line impedance data at different times in the historical power line carrier communication process; In combination with the predicted channel and signal state data, a matching first power line carrier communication enhancement strategy is applied to pre-complete the power line carrier communication enhancement processing; in combination with the predicted power line impedance data, a matching second power line carrier communication enhancement strategy is applied to pre-complete the power line carrier communication enhancement processing.

4. The power line carrier communication enhancement method according to claim 1, characterized in that: Also includes: Obtaining a security level of target power line carrier communication; The security levels include general and important; matching a fourth power line carrier communication enhancement strategy according to the acquired power line carrier communication security level; The fourth power line carrier communication enhancement strategy: the security level is the integration of primary encryption technology and low-level error checking in the carrier machine used in general situations, and the security level is the integration of advanced technology and advanced error checking in the carrier machine used in important situations; The power line carrier communication safety performance enhancement process is completed using the matched fourth power line carrier communication enhancement strategy.

5. The method for enhancing power line carrier communication according to claim 1, characterized in that: Also includes: Obtain the target power line's operating voltage level and operating frequency band type and the real-time requirements for the target power line carrier communication; Matching a fifth power line carrier communication enhancement strategy according to the obtained working voltage level, working frequency band type, and real-time requirement combination; The fifth power line carrier communication enhancement strategy includes: selecting to use equalizer technology for signal compensation under conditions of high voltage level, low frequency band type and low real-time requirement, selecting to use pre-distortion compensation technology for signal compensation under conditions of low voltage level, high frequency band type and high real-time requirement, and not performing signal compensation in other combinations.

6. The power line carrier communication enhancement method according to claim 1, characterized in that: Also includes: Receive in real time the signal quality evaluation result fed back by the receiving end corresponding to the target power line carrier communication, and determine whether there is a signal quality evaluation result lower than the preset signal quality evaluation result received for a second preset time. If so, use the backup sensor to collect the power line environment data in real time at the next moment, so as to complete the determination of the environment level; and obtain the power line topology structure in the target power line information at the next moment and repeat the verification operation to obtain the successfully verified power line structure topology, so as to complete the determination of the power line structure topology complexity level.

7. The method for enhancing power line carrier communication according to claim 1, characterized in that: After the environmental data of the target power line is collected in real time by using the sensor, and the environmental level is determined according to the environmental data of the target power line and the preset environmental data range, it also includes: judging whether the environmental level determined according to the environmental data collected at the current moment is the same as the environmental level determined at the previous moment; if they are the same, directly using the first power line carrier communication enhancement strategy matched at the previous moment as the first power line carrier communication enhancement strategy at the current moment, instead of dynamically matching the first power line carrier communication enhancement strategy according to the real-time output of the distance level and the environmental level of the target power line; After the target power line information is acquired in real time, it also includes: judging whether the power line topology complexity level determined according to the power line topology structure in the target power line information acquired at the current moment and the preset power line topology structure is the same as the power line topology complexity level determined at the previous moment; if they are the same, directly using the second power line carrier communication enhancement strategy matched at the previous moment as the second power line carrier communication enhancement strategy matched at the current moment, instead of dynamically matching the second power line carrier communication enhancement strategy according to the real-time output of the power line topology complexity level of the target power line.

8. A power line carrier communication enhancement system, characterized in that: include: The power line carrier communication level data acquisition module is used to determine the target power line and obtain the target power line information in real time, determine the distance level according to the power line length in the target power line information and the preset power line length range; determine the power line topology complexity level according to the power line topology structure in the target power line information and the preset power line topology structure regulations; use sensors to collect the target power line environment data in real time, and determine the environment level according to the target power line environment data and the preset environment data range; Power line carrier communication data monitoring module, used for real-time monitoring of channel and signal status data and power line impedance data during power line carrier communication; A power line carrier communication enhancement processing module, used for dynamically matching a first power line carrier communication enhancement strategy according to the real-time output of the distance level and the environment level of the target power line; The first power line carrier communication enhancement strategy includes: adopting OFDM modulation technology, adopting improved OFDM modulation technology and OFDM modulation technology combined with MIMO technology; combining the channel and signal status data obtained by real-time monitoring, applying the matching first power line carrier communication enhancement strategy to complete the power line carrier communication enhancement processing; dynamically matching the second power line carrier communication enhancement strategy according to the real-time output of the power line topology complexity level of the target power line; the second power line carrier communication enhancement strategy includes: adaptive impedance matching technology and distributed adaptive impedance matching technology; combining the power line impedance data obtained by real-time monitoring, applying the matching second power line carrier communication enhancement strategy to complete the power line carrier communication enhancement processing.

9. A carrier machine used in the power line carrier communication enhancement system of claim 8, characterized in that: The carrier machine is used to complete signal modulation and transmission by using the channel and signal status data obtained by combining real-time monitoring and applying a matching first power line carrier communication enhancement strategy.

10. A wave trap used in the power line carrier communication enhancement system according to claim 8, characterized in that: The wave trap is used to adopt the power line impedance data obtained by combining real-time monitoring and apply a matching second power line carrier communication enhancement strategy to complete impedance adjustment.

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