676results about "Transmission control/equlisation" patented technology

The invention relates to the technical field of communication engineering, and discloses a power line carrier and wireless dual-mode fusion optimized communication method, which comprises the following steps of: 1, acquiring signal quality, noise and delay data of a power line and a wireless link in real time, and constructing a prediction model by utilizing historical data; step 2, dynamically adjusting a judgment threshold value of link switching in real time based on the prediction model, and ensuring that switching is triggered only when the signal change exceeds a preset range; step 3, based on the dynamic threshold, combining multiple indexes of signal-to-noise ratio, delay, packet loss rate and network load; according to the method, the necessity of link switching can be more intelligently judged by dynamically adjusting the judgment threshold of link switching and adopting a fuzzy logic decision mechanism, frequent switching during tiny fluctuation of signals is avoided by dynamic threshold adjustment, and a fuzzy logic system integrates multiple factors, so that the decision is finer, and the reliability of link switching is improved. And unnecessary delay and resource waste are reduced, so that the stability of a communication system is improved.

The invention relates to the technical field of carrier communication, in particular to a multimode power line carrier communication method and a carrier communication module, and the method comprises the steps: determining a frequency coincidence degree through analyzing the coincidence degree of a frequency corresponding to a positive number amplitude value on a spectrogram of each modal component in a carrier signal and a signal frequency range of the carrier signal, and determining a difference index by analyzing the difference between each characteristic modal component and all modal components of the noise reference signal in frequency, analyzing the centralized distribution condition of the carrier signal in energy, and determining a step length adjustment value in combination with the signal interference degree. And carrying out noise reduction processing on the carrier signal in the power line carrier communication process at the current moment. The invention aims to eliminate noise interference in carrier signals and improve the reliability of power line carrier communication.

The invention relates to the technical field of power line communication, and discloses a frame synchronization method and device for broadband power line communication, and the method comprises the steps: carrying out the symbolization cross-correlation operation of a received signal, and obtaining a cross-correlation result sequence; performing secondary autocorrelation analysis and accumulation processing on the cross-correlation values in the sequence to generate an autocorrelation accumulated value sequence; screening candidate peak positions according to absolute values of the self-correlation accumulated values; defining a synchronous peak analysis window around the candidate peak position, and setting a noise reference window in an area far away from the window; verifying the validity of the candidate peak based on the difference between the autocorrelation accumulated values of the synchronization peak window and the noise reference window; and if the verification is valid, calculating and determining a final synchronization position through a mean value of a plurality of peak value positions in the synchronization peak window. According to the method, the problem of inaccurate synchronization peak positioning under the multipath effect and noise interference in the existing method is solved through the self-correlation accumulation and noise separation mechanism, and the reliability of frame synchronization is improved.

The invention discloses a power line carrier signal synchronization method and device, and belongs to the technical field of power line carrier communication. The method comprises the following steps: under the condition that a signal sequence is received, determining an autocorrelation result based on a known signal sequence; under the condition that the self-correlation result exceeds a dynamic threshold value, determining an effective correlation peak; the dynamic threshold is dynamically updated along with the change trend of the plurality of self-correlation results; and starting signal synchronization under the condition that the effective correlation peak and the historical effective correlation peak form a continuous correlation peak. According to the invention, through combination of cross-correlation and self-correlation, accurate detection of effective correlation peaks is realized, a dynamic threshold and continuity verification mechanism is introduced, the accuracy and robustness of signal synchronization are improved, the synchronization misjudgment rate can be significantly reduced, and the synchronization efficiency is improved.

The invention discloses an HPLCamp (High Performance Liquid Chromatography) based on deep learning. The invention discloses an HRF dual-mode communication adaptive coding modulation and anti-noise method. The method comprises the following steps: acquiring an optical radio frequency signal amplitude-phase change rate and synchronously sampling and normalizing; calculating a node amplitude-phase residual error to generate a nonlinear mapping coefficient; monitoring coherent change to solve a drift trend, adjusting a modulation coding optimization scheme, compensating distortion and outputting an anti-noise result. According to the method, the instantaneous amplitude and phase of the optical radio frequency dual-mode signal are extracted, a multi-dimensional amplitude-phase characteristic matrix is formed in combination with time domain synchronization and a normalization template, differential residual modeling and nonlinear mapping coefficient calculation are carried out between impedance nodes, and dynamic compensation of amplitude-phase mismatch and envelope offset is achieved. A drift trend quantity is generated based on coherent offset parameter differentiation, feedback is provided for modulation format and coding strategy optimization, amplitude equalization and phase correction are completed, the signal synchronization degree and amplitude-phase consistency are improved, and the steady-state response and anti-disturbance performance of a transmission link are enhanced.

The invention discloses a network communication dynamic optimization method based on multi-module collaboration, and relates to the technical field of network communication, a dual-mode communication module is deployed at each network node, and the network communication dynamic optimization method comprises the following steps: each network node broadcasts own existence information and power line channel characteristics through an HPLC (High Performance Liquid Chromatography) channel of the dual-mode communication module; each network node scans surrounding wireless networks through an HRF channel of the dual-mode communication module and reports own wireless channel quality information to the gateway; the global state sensing module collects all information and constructs a global network view containing physical topology and a channel quality map. A dual-mode cooperation mechanism, a machine learning prediction model and a dynamic decision strategy can adapt to complex dynamic environments such as power line noise fluctuation and wireless interference change, and communication parameters can be autonomously optimized without manual intervention; and meanwhile, the modular design is convenient to expand to a multi-mode communication scene, and has a wide application prospect.

The invention relates to the technical field of intelligent power grid communication, and discloses an HPLC communication-oriented power topology adaptive reconstruction and energy consumption optimization control method, which comprises the following steps of: acquiring HPLC communication characteristic data of power network nodes in real time; constructing a dynamic spatio-temporal topological graph based on the communication feature data and predicting a future topological state; generating a communication power distribution and routing path joint optimization strategy by using a multi-target reinforcement learning algorithm in combination with the predicted future topology state and the real-time energy consumption parameter; verifying the electromagnetic compatibility and protocol compliance of the optimization strategy through a digital twin model, and generating a control instruction which can be executed by equipment; and the transmitting power and the communication route of the HPLC node are dynamically adjusted through the control instruction. According to the method, the communication quality stability and the energy efficiency level are improved, topology dynamic perception, multi-target collaborative optimization and strategy security verification are realized, and efficient and reliable operation of HPLC communication in a complex power grid environment is guaranteed.

The invention provides an alternating current charging pile power line carrier control method, a medium and a system, and belongs to the technical field of alternating current charging piles. Real-time channel characteristic detection is carried out on a charging pile power line to obtain dynamic channel state parameters, forward error correction coding processing is carried out on a charging pile control instruction to obtain a coded carrier data frame, and the coded carrier data frame is sent to the medium; a double-layer coupling game control model is utilized to calculate transmission parameters, coupling optimization of upper and lower game models is realized through a grey wolf optimization game algorithm to obtain an optimal carrier transmission parameter set, and working parameters of a power line carrier transmitter of the charging pile are adjusted according to the optimal parameter set to realize carrier communication. And meanwhile, a comprehensive evaluation index output by the carrier parameter dynamic adjustment function is fed back to the double-layer coupling game control model to form closed-loop iterative optimization, so that the technical problem that carrier communication parameters cannot be adaptively adjusted in real time due to dynamic change of power line channel characteristics along with factors such as load change and switching operation is solved.

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.

The invention discloses a power line carrier signal synchronization method and device based on an OFDMA system, and belongs to the technical field of power line carrier communication. The method comprises the following steps: performing cross-correlation processing on a received signal and a reference sequence to obtain a target cross-correlation result, and performing self-correlation operation on the target cross-correlation result and a target historical cross-correlation result to obtain a target self-correlation result; analyzing the position of a first target autocorrelation peak in the received signal based on the target autocorrelation result; the first target autocorrelation peak is the autocorrelation peak with the maximum peak value in the received signal; determining a first window including the first target autocorrelation peak according to the position of the first target autocorrelation peak; and determining the position of a synchronization peak in the received signal based on the position of the autocorrelation peak in the first window. According to the invention, the autocorrelation peak is determined by combining cross-correlation and autocorrelation, and the position of the synchronization peak is determined by integrating the position of the autocorrelation peak in the first window, so that the accuracy of signal synchronization is improved.

The invention relates to the technical field of frequency band detection, in particular to a broadband power line carrier communication frequency band detection method and a broadband power line carrier communication frequency band detection system. According to the difference between energy corresponding to each peak value in the modal component and the peak width ratio of each peak value, obtaining a characteristic value of the modal component influenced by interference, and according to the difference between the frequency range of the modal component and the frequency range of energy change, obtaining the interference degree of each modal component, and obtaining a signal adjustment coefficient to adjust a wavelet threshold value; and analyzing the difference between the signal-to-noise ratios of the filtered modal components, reconstructing the modal components, and obtaining the working frequency band of the power line carrier communication signal according to the similarity between the reconstructed signals and the standard signals of the frequency bands corresponding to the modal components in combination with the bit error rate of the frequency bands. According to the invention, more accurate broadband power line carrier communication frequency band detection can be realized.

The invention relates to the technical field of Internet of Things electric power communication, and discloses a remote software upgrading method and system based on an HPLC high-speed power line carrier network. The remote software upgrading method is applied to software upgrading equipment, and specifically comprises the following steps that S101, a master control node of software to be upgraded is obtained, the master control node completes encryption of an upgrading instruction packet through HPLC network broadcasting, if the master control node is in an offline state, a response is triggered through a wake-up pulse signal synchronized with a power line power frequency period, and if the master control node is not in the offline state, the software to be upgraded is upgraded; and it is ensured that the whole network nodes complete instruction synchronization within the preset time. Omnibearing upgrading and optimization are achieved through three core technologies of dynamic fragmentation transmission, millisecond-level service continuity guarantee and resource limit adaptation, the packet loss rate of a high-noise environment is compressed to 0.1% based on a signal-to-noise ratio self-adaptive fragmentation strategy (128KB-512KB), the average transmission time is reduced to 17.4 minutes from 30 minutes in combination with a multi-path concurrent transmission and breakpoint resume protocol, and the transmission efficiency is improved. And 300ms whole-network instruction synchronization is realized with the assistance of a power frequency synchronization wake-up mechanism.

The invention discloses a self-adaptive adjustment method of an eye pattern center point, terminal equipment and a storage medium, and relates to the technical field of communication. The method comprises the steps of controlling a clock data recovery function to be in a locking state under the condition that an eye pattern center point adjustment condition is triggered; determining a left boundary threshold value and a right boundary threshold value of the center point of the current eye pattern; when it is determined that the center point position of the center of the current eye pattern deviates according to the left boundary threshold value and the right boundary threshold value of the center point of the current eye pattern, the equalization parameter is adjusted according to the deviation condition; and under the condition that the adjustment stopping condition is met, controlling the clock data recovery function to be in a normal working state. Thus, the eye pattern center can be adjusted when the operating environment temperature is high or at a certain period, so that the eye pattern center can be kept at the center position of the eye pattern in the long-time operating process of hardware equipment, signals of a receiving end are enhanced and repaired, the integrity of the signals of the receiving end is guaranteed, and the reliability of a link is improved.

A communication method and apparatus, which relate to the technical field of communications. By means of the communication method and apparatus, different preamble lengths and slots can be allocated to an electric meter, thereby improving the communication efficiency. The method comprises: a central coordinator receiving channel quality information between nodes in each node group among a plurality of node groups; the central coordinator determining a preamble length on the basis of the channel quality information; the central coordinator sending first indication information and second indication information, wherein the first indication information is used for indicating a preamble length of a frame sent by a node in each node group among the plurality of node groups, and the second indication information is used for indicating a slot of the frame sent by the node in the node group; and an electric meter receiving the first indication information and the second indication information, and sending a frame on the basis of the preamble length indicated by the first indication information and the slot indicated by the second indication information.

A CAN transmitter includes an output branch, a replica branch including a replica of the output branch, and a feedback network. The output branch includes a first resistive element controlled by a first bias voltage and a second resistive element controlled by a second bias voltage. The replica branch has a feedback node that is replicated at a midpoint between the CANH bus terminal and the CANL bus terminal. The feedback network has a first input coupled to the feedback node, a second input configured to receive a midpoint reference voltage indicative of a desired midpoint voltage between the CANH and CANL terminals, and an output at which the first bias voltage is provided. A resistance controller is coupled to a control terminal of the second resistive element and configured to generate the second bias voltage based on a predetermined reference voltage and a bias current.

The embodiment of the invention provides a T-Box, a relay, a signal transmission system and a vehicle, relates to the technical field of communication, and is used for synchronously sending a radio frequency signal and a control signal to the relay through a cable by the T-Box. A first branch circuit in the T-Box comprises a V2X circuit and a first radio frequency conduction circuit, and the first radio frequency conduction circuit is coupled between the V2X circuit and a first combining point. The second branch comprises a first control signal end and a first radio frequency isolation circuit, and the first radio frequency isolation circuit is coupled between the first control signal end and the first combining point; the first control signal end outputs a control signal. A fourth branch in the relay comprises a V2X signal end of any thing in vehicle connection and a bidirectional switch circuit, the bidirectional switch circuit comprises a first path and a second path which are coupled between the V2X signal end and the third combining point in parallel, and the first path comprises a first power amplifier. The fifth branch comprises a second control signal end coupled with the bidirectional switching circuit; the second control signal end receives a control signal to control the gain of the first power amplifier.

Disclosed is a wired cooperative multiple input multiple output (CMIMO) signal transmission method based on a multimode transmission line. The method includes the following step: selecting a type of the multimode transmission line; constructing a wired CMIMO transmission system based on the multimode transmission line; performing channel measurement to obtain a transmission coefficient matrix; judging whether the transmission coefficient matrix satisfies a full rank and reversibility and has a condition number satisfying conditions; optimizing a structure of the multimode transmission line, a multiport excitation structure, and a multiport receiving structure to obtain the transmission coefficient matrix which satisfies a full rank and reversibility and has a condition number satisfying conditions; making the transmission coefficient matrix be equivalent to a channel matrix of the wired CMIMO transmission system; and completing signal excitation, transmission and reception of the wired CMIMO transmission system based on the multimode transmission line.

The invention relates to the technical field of communication transmission, in particular to a power line carrier signal transmission method and device applied to a direct current lighting system, and the method comprises the steps: obtaining the current of each street lamp controlled by each concentrator in the direct current lighting system, constructing a current difference index and a noise interference index between any two adjacent street lamps, the voltage drop difference and the distance difference of any two adjacent street lamps are analyzed, and the signal influence index of a power line between any two adjacent street lamps is calculated by combining the control signal amplitude difference; according to the time domain difference and the frequency domain difference between a control signal issued by a concentrator and a control signal received by a terminal street lamp, an overall damage index is constructed by combining the control signal issued by the concentrator and the change of the timestamp of the control signal received by each street lamp, and the overall damage index is calculated based on a noise interference index, a signal influence index and the overall damage index. And obtaining the optimal routing forwarding path of each concentrator by using an optimization algorithm. The transmission effect of the carrier signal can be improved.

The invention discloses a low-voltage power line carrier communication method and system based on multi-band cooperative modulation, and relates to the technical field of carrier communication, and the method comprises the steps: obtaining channel state information and service type information; constructing a channel power model according to the channel state information and performing calculation to obtain a transmitting power distribution value of a frequency band; performing preliminary allocation on frequency bands based on the service type information and the transmitting power allocation value to obtain a first frequency band allocation strategy; and optimizing the first frequency band allocation strategy to obtain a second frequency band allocation strategy, thereby realizing low-voltage power line carrier communication based on multi-frequency-band cooperative modulation. According to the method, the communication reliability of the system in a high-noise and strong-interference environment is improved, the service quality assurance capability for services with different priorities is enhanced, dynamic optimization and balanced utilization of spectrum resources are realized, and an efficient and reliable communication solution is provided for application scenes such as a smart power grid and smart home.

Disclosed in the present application are a communication method and a communication apparatus. The method comprises: in a power line carrier communication system, dynamically dividing the whole frequency band into a plurality of sub-frequency bands, performing channel quality estimation on each sub-frequency band by using a measurement frame to obtain an actual channel condition of each sub-frequency band, and selecting, on the basis of the actual channel condition of each sub-frequency band, a sub-frequency band with a better quality to send data. A carrier shielding table can also be determined on the basis of the actual channel condition of each sub-carrier. By applying the method described in the present application, in the process of sending and receiving data, frequency band selection is flexible, and the efficiency of data transmission is improved; moreover, by using a carrier shielding table, a sub-carrier with a poor channel quality is not selected to send and receive data, so that power is concentrated on an effective sub-carrier (equivalent to an unshielded sub-carrier), and the communication performance is improved.

The disclosure provides a signaling link that overcomes or at least reduces the limitations of RC-dominated signaling wires, improving both the bandwidth and the power consumption of signaling circuits. Both an AC and a DC signaling link are disclosed. In one example, a signaling link is provided that includes: (1) a transmitter including a passive equalizer, (2) an over-terminated receiver, and (3) a lossy channel having a first end connected to the passive equalizer and a second end connected to the receiver, wherein the lossy channel has a channel characteristic impedance that is lower than a terminating impedance of the passive equalizer and a termination impedance of the receiver.

Systems and methods for amplifying signals propagated along a span of cable that imposes a loss tilt, and such that the loss tilt is canceled so as to provide unity gain, by modulating amplification as a function of frequency of an amplifier adjacent the span.

The invention relates to the technical field of data lines, and particularly discloses a data line system and a data line for intelligently switching data transmission and charging, and the system comprises a dual-core synchronization management module which is used for enabling dual cores to enter an initial detection state through encryption synchronization signaling when equipment is connected; the asynchronous signal processing module is used for generating state judgment parameters through multi-scale sliding window processing and time-frequency domain feature fusion; the consensus decision arbitration module outputs a backtracking trigger signal through dynamic projection transformation and self-adaptive threshold comparison; the state backtracking recovery module is used for generating a retry instruction with a random delay period based on the historical backtracking success rate and the signal quality evaluation; the safety mode control module is used for identifying dominant features by analyzing historical failure records and switching to a safety operation mode; through distributed dual-core cooperative processing and an intelligent fault recovery mechanism, the technical problems of confusion of protocol stacks and deadlock of a state machine in a complex electromagnetic environment are solved, and the anti-interference capability and reliability of the system are improved.

The invention discloses an HDC collector-based electric energy meter phase information detection method and device, and relates to the technical field of electric power communication, and the method comprises the steps: enabling a collector to obtain the phase information of the collector through a central coordinator; the collector synchronizes own phase information and zero-crossing information to a downstream electric energy meter; the electric energy meter collects a zero-crossing signal on a power line of the electric energy meter and zero-crossing information of the collector, and performs statistics to obtain zero-crossing time respectively; the electric energy meter calculates the phase information of the electric energy meter according to the difference value of the two zero-crossing moments and the phase information of the collector, and transmits the phase information to the collector; two RS-485 communication modes, namely a normal mode and a zero-cross detection mode, are adopted between the collector and the downstream electric energy meter. According to the invention, no extra communication mode needs to be added, the cost is low, simultaneous detection can be carried out on all RS-485 networks in a broadcast mode, the identification efficiency is high, direct transmission is carried out by adopting physical signals in the synchronous detection process, no complex serial port protocol or user protocol exists, and the precision is high.

The invention provides an electric energy quality treatment method, system and device based on a charging pile and a medium, and belongs to the technical field of charging piles, and the method is realized through the following steps: employing a mutual inductor to collect three-phase voltage / current; a common analog sampling and DSP processing circuit; harmonic / reactive power is identified based on the instantaneous reactive power theory, and a compensation instruction is generated; according to the compensation control instruction, driving an active filtering inverter circuit to inject compensation current into a power grid so as to reduce the total harmonic current content and improve the power factor; and the main controller generates charging state data according to the sampled voltage signal and current signal, and couples the data to an alternating current power line for transmission through the power line carrier communication module. The system guarantees the quality of the power grid, achieves the high efficiency and reliability of the operation of the charging pile, and gives consideration to the safety of the power grid and user experience.

The invention provides a self-adaptive frequency adjustment method, medium and system for an ammeter carrier communication module, and belongs to the technical field of intelligent ammeters, and the method comprises the steps: firstly obtaining and sampling a power line carrier communication signal, obtaining communication time distribution characteristics within 24 hours through time domain analysis, and carrying out frequency domain analysis to obtain noise spectrum characteristics; and establishing a time-frequency characteristic incidence matrix. 24 hours are divided into a plurality of transmission time windows based on the matrix, and the optimal frequency range of each window is determined and sub-band division is carried out. And performing channel quality evaluation on the sub-bands, substituting evaluation data into the noise characteristic equation set, solving to obtain a channel transmission characteristic curve, and selecting an optimal transmission sub-band for communication according to the channel transmission characteristic curve. The system monitors communication quality in real time, and performs time-frequency characteristic analysis and optimal sub-band selection again when a quality parameter is lower than a threshold value, so that adaptive frequency adjustment is realized, and the problem that current electric meter carrier communication is difficult to adapt to a complex power line channel environment is solved.

The invention relates to the field of power line communication, in particular to a power line communication system based on a multi-carrier aggregation technology, which is characterized in that transmission interference characterization values of power line networks in regions are determined based on collected environment characteristics of each region in combination with corresponding sudden noise intensity; the method comprises the following steps of: dividing abnormal tendency categories of transmission work of a power line network in each region according to different regions, and calling related modules for analysis, including obtaining interference characteristic analysis transmission parameters of each branched transmission path in the region, so as to judge whether data signal transmission of the branched transmission path meets a transmission standard or not, and identifying a corresponding offset branched transmission path; analyzing a carrier transmission abnormity characterization coefficient according to the path data signal intensity and the data signal transmission rate so as to identify whether the carrier frequency band of the data signal in each branch transmission path needs to be adjusted; according to the invention, interference factor changes affecting power line communication can be captured in time, a path area where a fault may occur can be identified in time, and the quality of data signal transmission is ensured.

The invention discloses a cable tunnel intelligent communication transmission system and method based on artificial intelligence, and relates to the technical field of intelligent communication.The method comprises the steps that S10, an energy information master station is installed at an entrance of a cable tunnel, an optical cable is welded into the energy information master station, one end of the optical cable extends out of an energy information master station case, and the energy information master station case is connected with the optical cable along the cable; laying the integrated optical cable embedded with the wireless access node above an optical cable bridge in the cable tunnel; s20, determining an abnormal position existing in each cable division section; s30, predicting an abnormal coefficient of each cable division section; and S40, intelligently generating a communication transmission optimization strategy of each cable division section. According to the method, the sound intensity value, the abnormal current value and the abnormal voltage value are selected according to the condition that the abnormal position exists in each cable division section, the influence of other interference abnormal values on the prediction result can be eliminated, and the prediction precision is further improved.

The invention discloses a multi-thread-driven communication centralized control method and system and electronic equipment, and relates to the related field of carrier transmission, and the method comprises the steps: receiving a communication instruction; task thread distribution and task queuing are carried out according to the communication content, the communication area and the priority information, and a communication sound source signal is generated according to the communication area and the communication content; when the task thread is obtained to execute the scheduling instruction, the communication sound source signal is subjected to power amplification processing, the communication sound source signal and a control signal are synchronously injected into a communication line through a carrier host, and the communication sound source signal and the control signal are transmitted in a common-cable carrier mode; and the communication terminal receives the co-cable signal, separates a communication audio and a control instruction from the co-cable signal, and performs communication terminal control and communication content broadcasting. The technical problems that task scheduling is disordered, signal transmission is unstable and terminal control is inaccurate in an existing communication centralized control method are solved, and the technical effects of efficient parallel processing of multiple tasks, high-quality and stable transmission of communication signals and accurate control of communication terminals are achieved.

The invention relates to a discrete distributed load driving system and method, computer equipment and a storage medium. The method comprises the steps that S1, a master control module generates an ordered 0th data packet according to a physical connection sequence of driving modules; s2, the main control module sends the 0th data packet to a first driving module of a one-way data path; s3, the mth driving module receives and analyzes the (m-1) th data packet sent by the upstream to obtain the mth control instruction; s4, the mth driving module drives a load connected with the mth driving module according to the mth control instruction; and S5, the mth driving module cuts off the first sub-data frame from the (m-1) th data packet and repacks the (m-1) th data packet to generate an mth data packet, and sends the mth data packet to a downstream (m + 1) th driving module. The method and the device have the effect of reducing deployment and maintenance cost during large-scale load control.