Ad-hoc network type dual-mode communication system integrating HPLC and HRF

Abstract

The invention discloses an ad-hoc network type dual-mode communication system integrating HPLC and HRF, which comprises a dual-mode communication unit, a central coordinator, a quasi-quantity acquisition module, an adaptive networking module and an automatic route repairing and updating module, and is characterized in that the dual-mode communication unit comprises an HPLC carrier module with a receiving and transmitting end and an HRF wireless module with a receiving and transmitting end; the dual-mode communication unit further comprises a communication modulation module and a signal equalization processing module. The invention relates to the technical field of network communication. According to the ad hoc network type dual-mode communication system integrating the HPLC and the HRF, the whole dual-mode communication is more stable and reliable by adopting communication modulation and signal equalization processing, and the purposes of ensuring the stability of the dual-mode communication, eliminating interference caused by a multipath effect and optimizing the system performance are well achieved; according to the invention, the security of networking communication can be improved by carrying out comprehensive security analysis processing on each sub-node before networking.

Description

Technical Field

[0001] The invention relates to the technical field of network communication, in particular to a self-organizing dual-mode communication system integrating HPLC and HRF. Background Art

[0002] The communication network in the system needs to be able to efficiently transmit and manage large amounts of data, and power line carrier communication technology (HPLC) and wireless communication technology (HRF) are widely used in power grids. Power line carrier communication technology uses power lines as a transmission medium to transmit data signals through power lines to achieve information transmission and communication. This method generally has stable transmission, but due to noise interference, impedance and signal attenuation in power lines, the communication quality will fluctuate or even be interrupted. On the other hand, wireless communication technology (HRF) can achieve efficient transmission under normal circumstances, but in actual applications it will be affected by factors such as obstacles, signal attenuation and long distance from the base station, resulting in reduced communication quality. Both of these communication methods will face complex and changeable field environments and irregular interference factors in actual power grid applications, such as data transmission failure or congestion.

[0003] A method of HPLC and HRF dual-mode communication with reference patent publication number CN118337637A provides a systematic design process from requirement determination to verification and implementation, ensuring the integrity and systematicness of the design. Through performance analysis and optimization design steps, the performance and reliability of the dual-mode communication system can be improved, including improving the signal-to-noise ratio, reducing the bit error rate, etc., flexibility and adaptability. Through verification and implementation steps, the feasibility and practicality of the design scheme are ensured, providing reliable support for practical applications.

[0004] Referring to a dual-mode communication method and device based on HPLC and HRF with reference to Chinese patent publication number CN117254832A, a newly received message can be temporarily stored in a waiting server, and the waiting server can match the newly received message to the optimal channel of the message when there is no accumulation in the HPLC channel or the HRF channel according to its message information and a pre-established optimal mapping relationship, thereby achieving maximum rate transmission of the message and improving the transmission efficiency of the entire system. Even if the HPLC channel and the HRF channel are accumulated, the system can store a part of the message for subsequent processing and transmission, thereby increasing the message carrying capacity of the system and realizing optimal utilization of the HPLC channel and the HRF channel.

[0005] A comprehensive analysis of the above patents reveals the following defects:

[0006] 1) In actual applications, the existing dual-mode communication system is affected by factors such as obstacles, signal attenuation, and long distance from the base station, which leads to a decrease in communication quality. For example, the method of HPLC and HRF dual-mode communication in reference patent CN118337637A, although verification is also used to improve the reliability of communication, does not perform anti-interference and denoising processing on the communication signal data itself, and cannot achieve the purpose of making the entire dual-mode communication more stable and reliable by using communication modulation and signal equalization processing, and cannot achieve the purpose of ensuring the stability of dual-mode communication, eliminating the interference caused by multipath effects, and optimizing system performance, which is very unfavorable to the promotion and use of dual-mode communication.

[0007] 2) The existing dual-mode communication system has low security during networking. For example, the reference patent CN117254832A, which is a dual-mode communication method and device based on HPLC and HRF, cannot improve the security of networking communication by performing comprehensive security analysis and processing on each sub-node before networking, and cannot achieve the purpose of both realizing adaptive networking and ensuring networking security.

[0008] 3) The existing dual-mode communication system cannot switch freely according to the specific parameters of the communication environment. For example, the method of HPLC and HRF dual-mode communication in reference patent CN118337637A cannot conduct a comprehensive evaluation and analysis based on the actual communication environment to quantify the determination of dual-mode switching, and cannot achieve comprehensive and accurate dual-mode switching. Summary of the invention

[0009] 1. Technical issues to be resolved

[0010] In view of the deficiencies in the prior art, the present invention provides a self-organizing dual-mode communication system integrating HPLC and HRF, which solves the problems that the existing dual-mode communication system may be affected by factors such as obstacle blocking, signal attenuation and long distance from the base station in actual applications, thereby causing the communication quality to deteriorate; the existing dual-mode communication system has low security during the networking process, and cannot improve the security of the networking communication by performing comprehensive security analysis and processing on each sub-node before networking; the existing dual-mode communication system cannot be freely switched according to the specific parameters of the communication environment, and cannot perform comprehensive evaluation and analysis according to the actual communication environment to specifically quantify the judgment of the dual-mode switching.

[0011] (II) Technical solution

[0012] To achieve the above objectives, the present invention is implemented through the following technical solutions: a self-organizing dual-mode communication system integrating HPLC and HRF, including a dual-mode communication unit, a central coordinator, a pseudo-quantity acquisition module, an adaptive networking module and an automatic routing repair and update module, the dual-mode communication unit includes an HPLC carrier module with a transceiver end and an HRF wireless module with a transceiver end, and the dual-mode communication unit also includes a communication modulation module and a signal equalization processing module;

[0013] The communication modulation module is used to modulate the signals when the HPLC carrier module and the HRF wireless module communicate with the outside world through a communication modulation algorithm;

[0014] The signal equalization processing module is used to perform equalization processing on the signal modulated by the communication modulation module through a signal equalization processing algorithm, use the channel estimation result to calculate the equalizer coefficient of the channel response, and perform equalization processing on the received signal to eliminate the interference caused by the multipath effect, perform signal adjustment, and optimize the system performance;

[0015] The adaptive networking module is used to adaptively network multiple network nodes according to actual usage requirements, and to perform security analysis and monitoring on the network nodes to be networked through a security processing algorithm;

[0016] The automatic routing repair and update module is used to monitor and evaluate the changes in the network environment of the entire dual-mode communication system through a dual-mode switching algorithm, and determine whether to automatically complete any switching between the HPLC carrier module and the HRF wireless module based on the monitoring and evaluation results.

[0017] Preferably, the communication modulation algorithm specifically includes the following steps:

[0018] S1. Divide the encoded data stream received by the dual-mode communication unit into multiple sub-streams, and then use QPSK modulation to modulate each sub-stream to generate I and Q component signals, and superimpose the I and Q components to form a complete QPSK signal. The calculation formula of QPSK modulation is:

[0019]

[0020] Among them, s(t) is the modulated signal at time t, E b is the energy per bit, equal to the signal power multiplied by the duration of the bit, f c is the frequency of the carrier, I(t) is the modulation signal of the in-phase component, Q(t) is the modulation signal of the quadrature-phase component, cos(2πf c t) and sin(2πf c t) are the cosine and sine waves of the carrier respectively;

[0021] S2, amplify the superimposed signal to meet the transmission power requirement, and filter to limit the bandwidth of the signal to reduce out-of-band interference;

[0022] S3, converting the digital QPSK signal into an analog signal, and transmitting the analog signal to a signal equalization processing module.

[0023] Preferably, the signal equalization processing algorithm specifically includes the following steps:

[0024] T1. First, extract the known reference pilot signal from the received signal and estimate the impulse response of the channel. The expression of the estimated channel impulse response is:

[0025]

[0026] in, is the estimated channel impulse response, r(t) is the received reference pilot signal, τ i is the delay of the ith channel, g(t) is the impulse response of the matched filter, and I is the number of multipath components;

[0027] T2. Obtain characteristic parameters of the channel from the channel estimation, including path loss, delay, and Doppler shift, calculate the estimated path loss, estimated delay, and estimated Doppler shift, and establish a channel model based on the characteristic parameters of the channel. The expression of the estimated path loss is:

[0028]

[0029] where PL is the estimated path loss and |r(t)| 2 is the received signal power, N0 is the noise power spectral density;

[0030] T3. Use the channel estimation results to calculate the equalizer coefficients of the channel response, and perform equalization on the received signal to eliminate interference caused by multipath effects, make signal adjustments, optimize system performance, and feed back the results of channel estimation and equalization to the central coordinator for decoding.

[0031] Preferably, the expression for estimating the delay in step T2 is:

[0032]

[0033] in, is the estimated average multipath delay, τ i is the delay of the ith channel, and I is the number of multipath components.

[0034] Preferably, the expression for estimating the Doppler shift in step T2 is:

[0035]

[0036] in, is the estimated Doppler shift, ∠r(t) is the phase of the received signal, and f c is the carrier frequency and I is the number of multipath components.

[0037] Preferably, the specific networking steps of the adaptive networking module are as follows:

[0038] E1. The master node issues a networking instruction, the sub-node receives the networking instruction, generates a network access request signal and sends it;

[0039] E2. Generate an enable signal for reading the original data bit width message through a security processing algorithm, and perform an inversion operation on the parallel accumulation result to complete the sub-node verification result;

[0040] E3. After the subnode verification is successful, the master node receives the network access request signal sent by the subnode, and the subnode receives the network access response and determines whether to access the network based on the feedback;

[0041] E4. Repeat steps E1-E3 until the set time threshold is reached.

[0042] Preferably, the security processing algorithm specifically includes the following steps:

[0043] P1. Through parallel processing technology, multiple 16-bit data segments are accumulated to obtain a series of intermediate accumulation results D p , and add all the intermediate cumulative results D p Merge to generate a large-bit-width accumulation result and store it in the corresponding register;

[0044] P2. Track the current amount of accumulated data through the state machine. When the accumulated data reaches a preset proportion of the total message length, generate a read enable signal. The read enable signal is used to control the operation of reading data from the original data cache. Use the generated read enable signal to control the data flow and read the message of the original data bit width.

[0045] P3. Collect all parallel accumulation results and merge them into a single large-bit-width accumulation result. If the width of the large-bit-width accumulation result exceeds 16 bits, truncation is required. If the width of the large-bit-width accumulation result is less than 16 bits, sign extension or zero extension is required.

[0046] P4. Perform bitwise inversion operation on the large bit width accumulation result, specifically including: for each intermediate accumulation result D p , calculate the logarithm with base 2 rounded up to determine each intermediate accumulation result D p The number of digits to be represented, and each intermediate cumulative result Dp Perform division operation and perform modulo 2 on the calculation result 16 Operation, each intermediate accumulation result D p Normalize to 16 bits, and add all normalized intermediate results D p The values ​​are added to obtain a cumulative sum, which represents the combined result of all data segments. The cumulative sum is bitwise inverted, and then 1 is added to realize the binary complement to generate the final verification result.

[0047] Preferably, the calculation expression of the verification result in step P4 is:

[0048]

[0049] Where C is the final TCP / UDP checksum result, M is the number of 16-bit data segments processed in parallel, and D p is the intermediate accumulation result, is rounded up to base 2 (D p +1), mod2 16 represents the modulo operation, Represents a bitwise XOR operation, used to implement two's complement

[0050] Preferably, the dual-mode switching algorithm specifically includes the following steps:

[0051] U1, real-time monitoring of the communication environment of power line carrier and radio frequency, respectively collecting the environmental parameter values ​​of the communication environment noise level value x, signal interference degree value y and data transmission rate v,

[0052] U2: Perform evaluation and analysis based on the environmental parameter values ​​collected in real time in step U1, and calculate the network environment evaluation index EG. The specific evaluation and analysis expression is as follows:

[0053]

[0054] Where E(P) is the piezoelectric evaluation index, x i is the network environment noise value collected for the ith time, x r is the standard noise value of the network environment, v i is the data transmission rate value collected for the ith time, v r is the standard data transmission rate, n is the total number of acquisitions, and a, b, and c are the model weight parameters respectively;

[0055] U3. When the network environment evaluation index EG calculated in step U2 exceeds the standard evaluation parameter α, that is, EG>α, the automatic routing repair and update module switches to the HRF wireless module for HRF mode communication. When EG≦α, the automatic routing repair and update module switches to the HPLC carrier module for HPLC mode communication.

[0056] HPLC mode: when the power grid environment is stable and the noise and interference are small, the communication unit chooses to use the HPLC mode for data transmission; power line carrier communication makes full use of the existing power lines, has the characteristics of high coverage and high stability, and is suitable for use in a stable power grid environment.

[0057] HRF mode: When the power grid environment is noisy or has strong interference, the communication unit will automatically switch to HRF mode. RF communication has high data transmission rate and strong anti-interference ability, and is particularly suitable for use in complex and changing environments.

[0058] The present invention also provides an information data processing terminal, which is used to realize a self-organizing dual-mode communication system integrating HPLC and HRF.

[0059] (III) Beneficial effects

[0060] The present invention provides a self-organizing dual-mode communication system integrating HPLC and HRF. Compared with the prior art, it has the following beneficial effects:

[0061] (1) The self-organizing dual-mode communication system integrating HPLC and HRF can make the entire dual-mode communication more stable and reliable by adopting communication modulation and signal equalization processing, which can well achieve the purpose of not only ensuring the stability of dual-mode communication, but also eliminating the interference caused by multipath effect and optimizing system performance, thereby avoiding the dual-mode communication system from being affected by obstacles, signal attenuation and long distance from the base station in actual application, which may lead to a decrease in communication quality, and is very beneficial to the promotion and use of dual-mode communication.

[0062] (2) The self-organizing dual-mode communication system integrating HPLC and HRF can improve the security of networking communications by performing comprehensive security analysis and processing on each sub-node before networking, thus achieving the goal of both realizing adaptive networking and ensuring networking security.

[0063] (3) The self-organizing dual-mode communication system of the HRF can conduct a comprehensive evaluation and analysis based on the actual communication environment to quantify the decision of dual-mode switching, thus achieving comprehensive and accurate dual-mode switching.

[0064] (4) The self-organizing dual-mode communication system of this and HRF integrates HPLC and HRF communication technologies in one, supports simultaneous transmission and reception, realizes the complementary advantages of "high-speed carrier" and "high-speed wireless" as backup, has stronger anti-attenuation ability and higher frequency band utilization, effectively solves the communication "island" problem existing in a single communication technology, can realize high-speed and stable data transmission in harsh power environment, greatly reduces communication delay, and improves the success rate of high-frequency data acquisition. By using the dual-mode communication unit as the communication center node, and configuring a 32-bit processor and 8M memory to independently manage each node of the self-organizing network, it cooperates with STA to complete dual-mode communication, master control, topology identification, pseudo-quantity acquisition and other functions. It has adaptive networking function, can realize automatic route repair and update, and supports MCU open mode to realize the development of user-defined software protocols and application processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 It is a structural principle block diagram of the system of the present invention;

[0066] Figure 2 It is a structural principle block diagram of the dual-mode communication unit of the present invention;

[0067] Figure 3 It is a principle flow chart of the dual-mode switching algorithm of the present invention. DETAILED DESCRIPTION

[0068] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0069] See also Figure 1-Figure 3 The embodiment of the present invention provides three technical solutions: a self-organizing dual-mode communication system integrating HPLC and HRF, specifically including the following embodiments:

[0070] Embodiment 1: A self-organizing dual-mode communication system integrating HPLC and HRF, comprising a dual-mode communication unit, a central coordinator, a pseudo-quantity acquisition module, an adaptive networking module and an automatic routing repair and update module, wherein the dual-mode communication unit comprises an HPLC carrier module having a transceiver end and an HRF wireless module having a transceiver end, and the dual-mode communication unit further comprises a communication modulation module and a signal equalization processing module;

[0071] The communication modulation module is used to modulate the signals when the HPLC carrier module and the HRF wireless module communicate with the outside world through the communication modulation algorithm;

[0072] The signal equalization processing module is used to perform equalization processing on the signal modulated by the communication modulation module through the signal equalization processing algorithm, use the channel estimation result to calculate the equalizer coefficient of the channel response, and perform equalization processing on the received signal to eliminate the interference caused by the multipath effect, perform signal adjustment, and optimize the system performance;

[0073] The adaptive networking module is used to adaptively connect multiple network nodes according to actual usage requirements, and complete security analysis and monitoring of the network nodes to be networked through security processing algorithms;

[0074] The automatic routing repair and update module is used to monitor and evaluate the changes in the network environment of the entire dual-mode communication system through a dual-mode switching algorithm, and determine whether to automatically complete any switching between the HPLC carrier module and the HRF wireless module based on the monitoring and evaluation results.

[0075] In the embodiment of the present invention, the communication modulation algorithm specifically includes the following steps:

[0076] S1. Divide the encoded data stream received by the dual-mode communication unit into multiple sub-streams, and then use QPSK modulation to modulate each sub-stream to generate I and Q component signals, and superimpose the I and Q components to form a complete QPSK signal. The calculation formula of QPSK modulation is:

[0077]

[0078] Among them, s(t) is the modulated signal at time t, E b is the energy per bit, equal to the signal power multiplied by the duration of the bit, f c is the frequency of the carrier, I(t) is the modulation signal of the in-phase component, Q(t) is the modulation signal of the quadrature-phase component, cos(2πf c t) and sin(2πf c t) are the cosine and sine waves of the carrier respectively;

[0079] S2, amplify the superimposed signal to meet the transmission power requirement, and filter to limit the bandwidth of the signal to reduce out-of-band interference;

[0080] S3, converting the digital QPSK signal into an analog signal, and transmitting the analog signal to a signal equalization processing module.

[0081] In the embodiment of the present invention, the signal equalization processing algorithm specifically includes the following steps:

[0082] T1. First, extract the known reference pilot signal from the received signal and estimate the impulse response of the channel. The expression for estimating the impulse response of the channel is:

[0083]

[0084] in, is the estimated channel impulse response, r(t) is the received reference pilot signal, τ i is the delay of the ith channel, g(t) is the impulse response of the matched filter, and I is the number of multipath components;

[0085] T2. Obtain the characteristic parameters of the channel from the channel estimation, including path loss, delay, and Doppler shift, calculate the estimated path loss, estimated delay, and estimated Doppler shift, and establish a channel model based on the characteristic parameters of the channel. The expression for the estimated path loss is:

[0086]

[0087] where PL is the estimated path loss and |r(t)| 2 is the received signal power, N0 is the noise power spectral density;

[0088] T3. Use the channel estimation results to calculate the equalizer coefficients of the channel response, and perform equalization on the received signal to eliminate interference caused by multipath effects, make signal adjustments, optimize system performance, and feed back the results of channel estimation and equalization to the central coordinator for decoding.

[0089] In the embodiment of the present invention, the expression for estimating the delay in step T2 is:

[0090]

[0091] in, is the estimated average multipath delay, τ i is the delay of the ith channel, and I is the number of multipath components.

[0092] In the embodiment of the present invention, the expression for estimating the Doppler shift in step T2 is:

[0093]

[0094] in, is the estimated Doppler shift, ∠r(t) is the phase of the received signal, and f c is the carrier frequency and I is the number of multipath components.

[0095] Embodiment 2: The embodiment of the present invention is different from the embodiment 1 in that the specific networking steps of the adaptive networking module are as follows:

[0096] E1. The master node issues a networking instruction, the sub-node receives the networking instruction, generates a network access request signal and sends it;

[0097] E2. Generate an enable signal for reading the original data bit width message through a security processing algorithm, and perform an inversion operation on the parallel accumulation result to complete the sub-node verification result;

[0098] E3. After the subnode verification is successful, the master node receives the network access request signal sent by the subnode, and the subnode receives the network access response and determines whether to access the network based on the feedback;

[0099] E4. Repeat steps E1-E3 until the set time threshold is reached.

[0100] In the embodiment of the present invention, the security processing algorithm specifically includes the following steps:

[0101] P1. Through parallel processing technology, multiple 16-bit data segments are accumulated to obtain a series of intermediate accumulation results D p , and add all the intermediate cumulative results D p Merge to generate a large-bit-width accumulation result and store it in the corresponding register;

[0102] P2. Track the current amount of accumulated data through the state machine. When the accumulated data reaches a preset proportion of the total message length, generate a read enable signal. The read enable signal is used to control the operation of reading data from the original data cache. Use the generated read enable signal to control the data flow and read the message of the original data bit width.

[0103] P3. Collect all parallel accumulation results and merge them into a single large-bit-width accumulation result. If the width of the large-bit-width accumulation result exceeds 16 bits, truncation is required. If the width of the large-bit-width accumulation result is less than 16 bits, sign extension or zero extension is required.

[0104] P4. Perform bitwise inversion operation on the large bit width accumulation result, specifically including: for each intermediate accumulation result D p , calculate the logarithm with base 2 rounded up to determine each intermediate accumulation result D p The number of digits to be represented, and each intermediate cumulative result D p Perform division operation and perform modulo 2 on the calculation result 16 Operation, each intermediate accumulation result D p Normalize to 16 bits, and add all normalized intermediate results D p The values ​​are added to obtain a cumulative sum, which represents the combined result of all data segments. The cumulative sum is bitwise inverted, and then 1 is added to realize the binary complement to generate the final verification result.

[0105] In the embodiment of the present invention, the calculation expression of the verification result in step P4 is:

[0106]

[0107] Where C is the final TCP / UDP checksum result, M is the number of 16-bit data segments processed in parallel, and D p is the intermediate accumulation result, is rounded up to base 2 (D p +1), mod2 16 represents the modulo operation, Represents a bitwise XOR operation, used to implement two's complement

[0108] Embodiment 3: The technical solution of the embodiment of the present invention is different from that of embodiment 2 in that: the dual-mode switching algorithm specifically includes the following steps:

[0109] U1, real-time monitoring of the communication environment of power line carrier and radio frequency, respectively collecting the environmental parameter values ​​of the communication environment noise level value x, signal interference degree value y and data transmission rate v,

[0110] U2: Perform evaluation and analysis based on the environmental parameter values ​​collected in real time in step U1, and calculate the network environment evaluation index EG. The specific evaluation and analysis expression is as follows:

[0111]

[0112] Where E(P) is the piezoelectric evaluation index, x i is the network environment noise value collected for the ith time, x r is the standard noise value of the network environment, v i is the data transmission rate value collected for the ith time, v r is the standard data transmission rate, n is the total number of acquisitions, and a, b, and c are the model weight parameters respectively;

[0113] U3. When the network environment evaluation index EG calculated in step U2 exceeds the standard evaluation parameter α, that is, EG>α, the automatic routing repair and update module switches to the HRF wireless module for HRF mode communication. When EG≦α, the automatic routing repair and update module switches to the HPLC carrier module for HPLC mode communication.

[0114] HPLC mode: when the power grid environment is stable and the noise and interference are small, the communication unit chooses to use the HPLC mode for data transmission; power line carrier communication makes full use of the existing power lines, has the characteristics of high coverage and high stability, and is suitable for use in a stable power grid environment.

[0115] HRF mode: When the power grid environment is noisy or has strong interference, the communication unit will automatically switch to HRF mode. RF communication has high data transmission rate and strong anti-interference ability, and is particularly suitable for use in complex and changing environments.

[0116] The embodiment of the present invention further provides an information data processing terminal, which is used to realize a self-organizing dual-mode communication system integrating HPLC and HRF.

[0117] In summary, the present invention can make the entire dual-mode communication more stable and reliable by adopting communication modulation and signal equalization processing, and well achieves the purpose of ensuring the stability of dual-mode communication, eliminating the interference caused by multipath effect, and optimizing system performance, thereby avoiding the dual-mode communication system from being affected by factors such as obstacle blocking, signal attenuation, and being far away from the base station in actual applications, which leads to a decrease in communication quality, which is very beneficial to the promotion and use of dual-mode communication. It can improve the security of network communication by performing comprehensive security analysis and processing on each sub-node before networking, and well achieves the purpose of both realizing adaptive networking and ensuring networking security. It can perform comprehensive evaluation and analysis based on the actual communication environment to specifically quantify the judgment of dual-mode switching, achieving a comprehensive and accurate It can accurately switch between two modes. By integrating HPLC and HRF communication technologies into one, it supports simultaneous transmission and reception, realizes the complementary advantages of "high-speed carrier" and "high-speed wireless" as backup for each other, has stronger anti-attenuation ability and higher frequency band utilization rate, and effectively solves the communication "island" problem existing in a single communication technology. It can realize high-speed and stable data transmission in harsh power environment, greatly reduce communication delay, and improve the success rate of high-frequency data acquisition. By using the dual-mode communication unit as the communication center node, and configuring a 32-bit processor and 8M memory to independently manage each node of the self-organizing network, it cooperates with STA to complete dual-mode communication, main control, topology identification, pseudo-quantity acquisition and other functions. It has adaptive networking function, can realize automatic route repair and update, and supports MCU open mode to realize the development of user-defined software protocols and application processing.

[0118] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0119] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0120] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-organizing dual-mode communication system integrating HPLC and HRF, characterized in that: It includes a dual-mode communication unit, a central coordinator, a pseudo-quantity acquisition module, an adaptive networking module and an automatic routing repair and update module. The dual-mode communication unit includes an HPLC carrier module with a transceiver end and an HRF wireless module with a transceiver end. The dual-mode communication unit also includes a communication modulation module and a signal equalization processing module. The communication modulation module is used to modulate the signals when the HPLC carrier module and the HRF wireless module communicate with the outside world through a communication modulation algorithm; The signal equalization processing module is used to perform equalization processing on the signal modulated by the communication modulation module through a signal equalization processing algorithm, use the channel estimation result to calculate the equalizer coefficient of the channel response, and perform equalization processing on the received signal to eliminate the interference caused by the multipath effect, perform signal adjustment, and optimize the system performance; The adaptive networking module is used to adaptively network multiple network nodes according to actual usage requirements, and to perform security analysis and monitoring on the network nodes to be networked through a security processing algorithm; The automatic routing repair and update module is used to monitor and evaluate the changes in the network environment of the entire dual-mode communication system through a dual-mode switching algorithm, and determine whether to automatically complete any switching between the HPLC carrier module and the HRF wireless module based on the monitoring and evaluation results.

2. The self-organizing dual-mode communication system integrating HPLC and HRF according to claim 1, characterized in that: The communication modulation algorithm specifically comprises the following steps: S1. Divide the encoded data stream received by the dual-mode communication unit into multiple sub-streams, and then use QPSK modulation to modulate each sub-stream to generate I and Q component signals, and superimpose the I and Q components to form a complete QPSK signal. The calculation formula of QPSK modulation is: Among them, s(t) is the modulated signal at time t, E b is the energy per bit, equal to the signal power multiplied by the duration of the bit, f c is the frequency of the carrier, I(t) is the modulation signal of the in-phase component, Q(t) is the modulation signal of the quadrature-phase component, cos(2πf c t) and sin(2πf c t) are the cosine and sine waves of the carrier respectively; S2, amplify the superimposed signal to meet the transmission power requirement, and filter to limit the bandwidth of the signal to reduce out-of-band interference; S3, converting the digital QPSK signal into an analog signal, and transmitting the analog signal to a signal equalization processing module.

3. The self-organizing dual-mode communication system integrating HPLC and HRF according to claim 2, characterized in that: The signal equalization processing algorithm specifically includes the following steps: T1. First, extract the known reference pilot signal from the received signal and estimate the impulse response of the channel. The expression of the estimated channel impulse response is: in, is the estimated channel impulse response, r(t) is the received reference pilot signal, τ i is the delay of the ith channel, g(t) is the impulse response of the matched filter, and I is the number of multipath components; T2. Obtain characteristic parameters of the channel from the channel estimation, including path loss, delay, and Doppler shift, calculate the estimated path loss, estimated delay, and estimated Doppler shift, and establish a channel model based on the characteristic parameters of the channel. The expression of the estimated path loss is: where PL is the estimated path loss and |r(t)| 2 is the received signal power, N0 is the noise power spectral density; T3. Use the channel estimation results to calculate the equalizer coefficients of the channel response, and perform equalization on the received signal to eliminate interference caused by multipath effects, make signal adjustments, optimize system performance, and feed back the results of channel estimation and equalization to the central coordinator for decoding.

4. The self-organizing dual-mode communication system integrating HPLC and HRF according to claim 3, characterized in that: The expression for estimating the delay in step T2 is: in, is the estimated average multipath delay, τ i is the delay of the ith channel, and I is the number of multipath components.

5. The self-organizing dual-mode communication system integrating HPLC and HRF according to claim 3, characterized in that: The expression for estimating the Doppler frequency shift in step T2 is: in, is the estimated Doppler shift, ∠r(t) is the phase of the received signal, and f c is the carrier frequency and I is the number of multipath components.

6. The self-organizing dual-mode communication system integrating HPLC and HRF according to claim 1, characterized in that: The specific networking steps of the adaptive networking module are as follows: E1. The master node issues a networking instruction, the sub-node receives the networking instruction, generates a network access request signal and sends it; E2. Generate an enable signal for reading the original data bit width message through a security processing algorithm, and perform an inversion operation on the parallel accumulation result to complete the sub-node verification result; E3. After the subnode verification is successful, the master node receives the network access request signal sent by the subnode, and the subnode receives the network access response and determines whether to access the network based on the feedback; E4. Repeat steps E1-E3 until the set time threshold is reached.

7. The self-organizing dual-mode communication system integrating HPLC and HRF according to claim 6, characterized in that: The security processing algorithm specifically includes the following steps: P1. Through parallel processing technology, multiple 16-bit data segments are accumulated to obtain a series of intermediate accumulation results D p , and add all the intermediate cumulative results D p Merge to generate a large-bit-width accumulation result and store it in the corresponding register; P2. Track the current amount of accumulated data through the state machine. When the accumulated data reaches a preset proportion of the total message length, generate a read enable signal. The read enable signal is used to control the operation of reading data from the original data cache. Use the generated read enable signal to control the data flow and read the message of the original data bit width. P3. Collect all parallel accumulation results and merge them into a single large-bit-width accumulation result. If the width of the large-bit-width accumulation result exceeds 16 bits, truncation is required. If the width of the large-bit-width accumulation result is less than 16 bits, sign extension or zero extension is required. P4. Perform bitwise inversion operation on the large bit width accumulation result, specifically including: for each intermediate accumulation result D p , calculate the logarithm with base 2 rounded up to determine each intermediate accumulation result D p The number of digits to be represented, and each intermediate cumulative result D p Perform division operation and perform modulo 2 on the calculation result 16 Operation, each intermediate accumulation result D p Normalize to 16 bits, and add all normalized intermediate results D p The values ​​are added to obtain a cumulative sum, which represents the combined result of all data segments. The cumulative sum is bitwise inverted, and then 1 is added to realize the binary complement to generate the final verification result.

8. The self-organizing dual-mode communication system integrating HPLC and HRF according to claim 7, characterized in that: The calculation expression of the verification result in step P4 is: Where C is the final TCP / UDP checksum result, M is the number of 16-bit data segments processed in parallel, and D p is the intermediate accumulation result, is rounded up to base 2 (D p +1), mod2 16 represents the modulo operation, Represents a bitwise exclusive OR operation, used to implement two's complement.

9. The self-organizing dual-mode communication system integrating HPLC and HRF according to claim 1, characterized in that: The dual-mode switching algorithm specifically includes the following steps: U1, real-time monitoring of the communication environment of power line carrier and radio frequency, respectively collecting the environmental parameter values ​​of the communication environment noise level value x, signal interference degree value y and data transmission rate v, U2: Perform evaluation and analysis based on the environmental parameter values ​​collected in real time in step U1, and calculate the network environment evaluation index EG. The specific evaluation and analysis expression is as follows: Where E(P) is the piezoelectric evaluation index, x i is the network environment noise value collected for the ith time, x r is the standard noise value of the network environment, v i is the data transmission rate value collected for the ith time, v r is the standard data transmission rate, n is the total number of acquisitions, and a, b, and c are the model weight parameters respectively; U3. When the network environment evaluation index EG calculated in step U2 exceeds the standard evaluation parameter α, that is, EG>α, the automatic routing repair and update module switches to the HRF wireless module for HRF mode communication. When EG≦α, the automatic routing repair and update module switches to the HPLC carrier module for HPLC mode communication.

10. An information data processing terminal, characterized in that: The information data processing terminal is used to implement the self-organizing dual-mode communication system integrating HPLC and HRF as described in any one of claims 1-9.

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