CN-122001490-A - Optical fiber signal energy co-transmission power regulation and control system and method based on service quality perception

CN122001490ACN 122001490 ACN122001490 ACN 122001490ACN-122001490-A

Abstract

The invention discloses an optical fiber signal energy co-transmission power regulation and control system and method based on service quality perception, and belongs to the field of optical fiber communication and radio frequency signal transmission intersection. Aiming at the defects of fixed power distribution and lack of service perception of the conventional optical fiber signal energy co-transmission technology, the invention constructs a multi-objective optimization decision model to solve the optimal control parameters after collecting the remote service quality, the equipment energy state and the optical fiber link parameters, performing space-time alignment, data cleaning and feature fusion pretreatment, dynamically adjusts the bias current and the modulation depth of a laser, realizes the dynamic distribution of energy and information power, and forms closed-loop regulation and control through effect evaluation. The system comprises a central office transmitting end, a single-mode fiber channel and a far-end receiving end. The invention realizes the power regulation and control of service drive, improves the utilization rate of optical power resources and the robustness of the system, and ensures the stable operation of remote equipment.

Inventors

XIAO ZIYANG
LI LUMING
WANG HUA
ZHANG ZHIGUO
GU XUELIANG

Assignees

国网江西省电力有限公司信息通信分公司

Dates

Publication Date: 20260508
Application Date: 20260410

Claims (9)

1. The method for regulating and controlling the optical fiber signal energy co-transmission power based on service quality perception is characterized by comprising the following steps: S1, collecting service quality indexes of multi-source heterogeneous remote service units, energy state indexes of remote nodes and transmission parameters of optical fiber links; S2, carrying out pretreatment operations of space-time alignment, data cleaning and feature fusion on the multi-source heterogeneous information acquired in the step S1 in sequence to obtain a standardized feature vector; s3, constructing a multi-objective optimization decision model, inputting the standardized feature vector obtained in the step S2 into the multi-objective optimization decision model, and solving to obtain an optimal value of the control parameter vector; S4, according to the optimal value of the control parameter vector obtained in the step S3, adjusting the bias current of the transmitting end laser and the modulation depth of the information signal, and realizing the dynamic distribution of the optical carrier energy power and the information power; And S5, collecting the regulated service quality index and the regulated energy state index, evaluating the regulation effect, updating the decision strategy library according to the evaluation result, and returning to the step S1 to form closed-loop regulation.
2. The method for regulating and controlling co-transmission power of optical fiber signal energy based on quality of service perception according to claim 1, wherein in step S1, the quality of service index comprises data throughput End-to-end transmission delay Delay jitter Packet error rate Service priority identification The energy state index comprises the residual electric quantity Real-time charging power, real-time discharging power, terminal voltage, working current and equipment temperature, wherein the transmission parameters of the optical fiber link comprise attenuation coefficients Effective refractive index Link loss value.
3. The method for regulating and controlling the co-transmission power of the optical fiber signal energy based on the service quality perception according to claim 1, wherein in the step S2, the space-time alignment operation adopts a mixed algorithm of dynamic time warping and Kalman filtering, the periodic index sequence is subjected to interpolation resampling, the non-periodic event data is subjected to time stamp correction, the data cleaning operation adopts a strategy based on confidence evaluation, anomaly detection, logic verification and trend verification are executed, the feature fusion operation adopts normalization processing and correlation analysis, the normalization processing method comprises one or more of min-max normalization, z-score normalization and decimal calibration normalization, and the correlation analysis adopts a mixed method based on mutual information and Gray causal verification.
4. The method for regulating and controlling the co-transmission power of optical fiber signal energy based on service quality perception according to claim 1, wherein in step S3, the multi-objective optimization decision model is solved by adopting a multi-objective evolutionary algorithm based on decomposition, the original multi-objective problem is decomposed into M single-objective sub-problems based on the multi-objective evolutionary algorithm based on decomposition, each sub-problem corresponds to a reference vector, the reference vectors are uniformly distributed in a target space, and the cross probability of the multi-objective evolutionary algorithm is calculated by using the multi-objective evolutionary algorithm based on decomposition Probability of variation According to the self-adaptive adjustment of the contribution degree and the convergence degree of the individual diversity, the expression is as follows: ; ; in the formula, As a basis for the probability of crossing, For the amount of cross-probability adjustment, The degree of contribution to the diversity of the ith individual, As a basis for the probability of variation, For the adjustment of the probability of variation, Is the convergence degree index of the ith individual, For the crossover probability of the ith individual, The variation probability of the ith individual, i is the individual number.
5. The method for regulating and controlling the optical fiber signal energy co-transmission power based on the service quality perception according to claim 1, wherein in the step S4, the operation of regulating the bias current and the modulation depth of the information signal of the transmitting end laser is realized through a numerical control current source and a modulator driving circuit of the transmitting end, the numerical control current source converts a digital set value of the bias current into an analog voltage and then into a driving current through a transconductance amplifier, and the modulator driving circuit adopts a digital predistortion technology to compensate the nonlinear characteristic of the modulator.
6. The method for regulating and controlling optical fiber signal energy co-transmission power based on quality of service as claimed in claim 1, wherein in step S5, the specific operation of evaluating the regulating and controlling effect is to calculate a regulated and controlled system utility value U, and to compare the system utility value U with a preset system utility threshold value Residual electric quantity With a preset energy safety threshold Comparing when And is also provided with When the control parameter vector is stored in the strategy library; when the continuous three evaluation results do not meet the preset conditions, a safety mode is started, and a fixed bias current safety value is obtained Modulation depth safety value ; The preset condition is that the system utility value U is not less than the preset system utility threshold value And the residual quantity of electricity Not less than preset energy safety threshold 。
7. The optical fiber signal energy co-transmission power regulation and control system based on service quality perception is used for executing the method of any one of claims 1 to 6, and is characterized by comprising a central office transmitting subsystem, a single-mode fiber channel, a remote node receiving and energy supply subsystem; the central office transmitting terminal system comprises a service quality sensing module, a regulating and controlling unit, an adjustable laser driving circuit and a signal modulating and synthesizing circuit; the service quality sensing module is used for acquiring a remote service quality index, the adjustable laser driving circuit is used for adjusting the bias current of the laser according to control parameters, the signal modulation and synthesis circuit is used for adjusting the modulation depth of an information signal and synthesizing an energy signal and an information signal, and the single-mode fiber channel is used for transmitting a synthesized optical carrier signal; The remote node receiving and energy supplying terminal system comprises a photoelectric conversion and separation module, an energy management unit and a feedback information sending module, wherein the photoelectric conversion and separation module is used for converting an optical signal into an electric signal and separating an energy component and an information component, the energy management unit is used for executing maximum power point tracking, battery state estimation and dynamic power distribution, and the feedback information sending module is used for returning a remote energy state index and a link parameter to the central office transmitting terminal system.
8. The system according to claim 7, wherein the feedback information sending module uses wavelength division multiplexing technology to send back information, the feedback laser works in 1310nm band, the modulation mode is on-off keying modulation, and the transmission rate is adjusted in the range of 1kbps to 100 kbps.
9. The system for regulating and controlling the power of the optical fiber signal energy co-transmission based on the service quality perception according to claim 7, wherein a disturbance observation method based on model prediction is adopted by a maximum power point tracking algorithm in the energy management unit, an extended Kalman filtering algorithm is adopted by battery state estimation, and the residual capacity SOC, the internal resistance and the health state of the battery are estimated at the same time.

Description

Optical fiber signal energy co-transmission power regulation and control system and method based on service quality perception Technical Field The invention relates to the crossing field of optical fiber communication and radio frequency signal transmission, in particular to an optical fiber signal energy co-transmission power regulation and control system and method based on service quality perception. Background With the rapid development of the fifth generation mobile communication, the internet of things and the industrial internet, a great deal of low-power consumption devices are deployed at all corners of cities. The continuous and reliable operation of these devices faces two challenges, namely the high-speed, low-delay data return requirement, and the continuous and stable energy supply problem, especially in the situations of difficult power taking or inconvenient wiring. The optical fiber signal energy co-transmission technology has been developed, which uses the light wave in the same optical fiber to simultaneously carry information and energy. The basic principle of the technology is that a high-frequency information signal and a direct current or low-frequency energy signal are multiplexed on the same optical carrier in a central office and transmitted to a far-end node through an optical fiber, the optical signal is converted into an electric signal through a photoelectric detector in the far-end node, and then the high-frequency information component and the direct current energy component are separated by a power divider or a filter and are respectively used for data recovery and equipment power supply. However, existing optical fiber signal energy co-transmission schemes have significant problems and disadvantages. The method has the advantages that the method is characterized in that the method is adopted, the power distribution is fixed and stiff, the method cannot adapt to dynamically-changed service demands and environments, the resource utilization efficiency is low, the service quality is not perceived, different information energy distribution strategies cannot be adopted according to the difference of service types, the energy supply is not matched with the demands, the energy supply is easy to be excessive or insufficient, the system robustness is poor, and the communication performance or the energy supply performance can be rapidly deteriorated when the link loss fluctuates. Therefore, there is an urgent need in the art for a novel system and method capable of sensing the remote quality of service requirements and the device energy status, and accordingly, regulating and controlling the signal-energy co-transmission power allocation in real time and precisely, so as to realize efficient and adaptive utilization of the limited optical power resources. Disclosure of Invention The invention aims to provide an optical fiber signal energy co-transmission power regulation and control system and method based on service quality perception, which are used for solving the problems that the power distribution in the prior art is fixed and stiff, and the dynamic change of service requirements and environments cannot be adapted. The technical scheme for solving the technical problems is as follows: the method for regulating and controlling the optical fiber signal energy co-transmission power based on service quality perception comprises the following steps: S1, acquiring service quality indexes of multi-source heterogeneous remote service units, energy state indexes of remote nodes and transmission parameters of optical fiber links; S2, carrying out pretreatment operations of space-time alignment, data cleaning and feature fusion on the multi-source heterogeneous information acquired in the step S1 to obtain a standardized feature vector; S3, constructing a multi-objective optimization decision model, inputting the standardized feature vector obtained in the step S2 into the multi-objective optimization decision model, and solving to obtain an optimal value of a control parameter vector, wherein the control parameter vector is obtained by the method WhereinFor the bias current of the laser,The depth of modulation for the information signal,The power distribution coefficient is used; the objective function of the multi-objective optimization decision model is a comprehensive value for maximizing the service quality guarantee utility and the energy transmission efficiency, and the specific expression is as follows: , Optimizing the overall objective function of the decision model for multiple objectives, Respectively guaranteeing utility and energy transmission efficiency sub objective functions for service quality; the utility function of the service quality assurance is as follows: where N is the total number of service types, For the weight coefficient of the i-th class of traffic,For the quality level of class i traffic under the control parameter u,For the quality utility function corr