1548 results about "Fast switching" patented technology

The invention discloses a low-voltage transformer area examination meter practical training device and a fault simulation control method, and relates to the technical field of electric power practical training. The device aims at the problems of single scene, extensive evaluation and low skill improvement efficiency in traditional electric power practical training. The meter simulation module is compatible with various meters and is matched with a dual-communication protocol to realize efficient data transmission; the intelligent interaction module provides high-quality interaction experience through a high-definition touch screen and low-delay transmission; the data generation module can quickly switch customized scenes, and the fault simulation module can accurately inject various faults; the training management module depends on advanced technologies of knowledge maps, deep learning and fuzzy comprehensive evaluation to realize full-process closed-loop management from project design and operation guidance to evaluation feedback and intelligent optimization; all the modules cooperate efficiently, and the professionality, the accuracy and the efficiency of power failure troubleshooting and operation and maintenance skill training of trainees are remarkably improved.

The invention relates to a multi-product-line-oriented robot welding integration method, device and equipment and a medium, and the method comprises the steps that three-dimensional geometrical characteristics and material attribute data of multiple types of workpieces are collected, and geometric parameters and material mechanical properties of weld joints are extracted; an order demand template is intelligently matched, and initial welding parameters and a clamp configuration scheme are generated; the health state of production equipment is evaluated in real time, and the collision-free movement track of the mechanical arm is planned; dynamically analyzing the joint angle sequence to generate a high-precision servo control signal; the welding process is monitored in real time, and current and molten pool temperature parameters are corrected; and iteratively optimizing the algorithm weight of the process knowledge base to improve the adaptive capacity. Through cooperation of multi-source data fusion and an intelligent algorithm, rapid switching of multiple kinds of workpieces, self-adaptive compensation of the equipment operation state and closed-loop optimization of welding process parameters are achieved, and the equipment utilization rate and the welding quality stability in a flexible production scene are remarkably improved.

The invention discloses a method for supporting fast switching of multiple models by NPU (Network Processing Unit) firmware. According to the invention, the system real-time performance and the resource utilization rate in a multi-task scene are obviously improved. Through a dynamic hierarchical caching strategy and a priority scheduling mechanism, the system can intelligently allocate cache resources and preferentially guarantee rapid loading of a high-frequency and high-urgency model, for example, in an automatic driving scene, switching delay of a path planning model can be reduced to a millisecond level, and non-perceptual switching of key tasks is guaranteed. The incremental parameter loading technology and firmware-level context management are deeply fused, only model difference data are transmitted, and hardware is utilized to accelerate and recover a calculation state, so that bandwidth waste caused by traditional full-amount loading is greatly reduced, the model switching efficiency of edge computing equipment is improved by more than 10 times when multiple tasks such as voice recognition and image processing are carried out in parallel, and the efficiency of the edge computing equipment is improved. And meanwhile, the calculation precision is kept lossless.

The invention discloses an unmanned aerial vehicle data transmission system based on information importance grading. In the invention, through dynamic priority division and intelligent resource scheduling, the execution reliability of the key task in a complex environment is obviously improved. The system preferentially guarantees stable transmission of first-level data (such as positions and emergency instructions) in a weak signal scene, and a standby machine is quickly switched to a relay node or a cluster topological structure is adjusted, so that task failure caused by communication interruption is avoided. Even if the signal strength of the sub-machine is suddenly reduced, the system can still ensure real-time return of key instructions, meanwhile, unnecessary data are automatically compressed or delayed, bandwidth occupation is reduced, the task success rate is effectively improved, and the overall stability and adaptability of a communication network are enhanced through predictive resource deployment and dynamic path optimization. The intelligent relay scheduling module combines real-time environment data and task requirements, deploys a standby machine to a high-risk area in advance, and reduces the risk of communication interruption caused by terrain shielding or weather interference.

The invention relates to the technical field of adaptive routing optimization, and particularly discloses a topology self-recognition and routing optimization method and system for a concentrator and a collector, and the method comprises the steps: carrying out the topology modeling of a multi-layer heterogeneous network; executing high-speed link state monitoring based on the initial topological graph; global loop detection and link optimization are completed based on the link state matrix; a weighted robust multi-dimensional path selection method is adopted to configure a main path and a standby path for each node; and monitoring the path state in real time and dynamically switching. In the prior art, a static route, a single protocol path or a fixed main and standby path is mainly adopted, and especially in a cross-protocol, cross-level and dynamic multi-node environment in a smart city, rapid path switching and high-reliability route redundancy guarantee cannot be realized. Due to the fact that the multi-dimensional path selection method and the cross-level and cross-protocol self-adaptive switching strategy are adopted, the problems of routing interruption and performance reduction are avoided, and the reliability of the whole network is improved.

The invention discloses a smart power grid fault-tolerant communication system and method based on multi-operator channel switching, and the method comprises the steps: collecting heterogeneous network and equipment state data through an intelligent sensing layer, achieving the network quality prediction and multi-target optimization through an AI decision engine, integrating spectrum resources and network slices through a resource cooperative control layer, and achieving the fault-tolerant communication of a smart power grid. The edge execution layer executes hardware-level fast switching, the emergency disaster recovery layer provides multi-dimensional fault recovery, and the security trusted layer guarantees data security. The method breaks through the bottleneck of traditional network switching, realizes high-reliability and low-delay transmission of power business, is suitable for scenes of intelligent substations, distribution network automation and the like, and remarkably improves the fault-tolerant capability and resource utilization efficiency of intelligent power grid communication.

The invention discloses a high-speed environment network switching optimization system and method based on meta-policy gradient, and relates to the technical field of wireless communication, and the system comprises a data collection module which is responsible for collecting the network environment and equipment state information of user equipment in real time, carrying out the preprocessing and filtering operation, and outputting the information; the model training module is used for training a switching strategy model on a plurality of simulation tasks by using historical data by adopting a double-layer optimization architecture based on a meta-strategy gradient, so that the model can quickly adapt to new switching requirements in different environments; the online decision-making module is responsible for receiving the output data of the data collection module, calling a model to generate an optimal switching strategy, then executing the strategy and monitoring a switching result; and the self-correction module is responsible for receiving the switching result of the online decision-making module and performing short-term fine adjustment and periodic updating on the model so as to ensure the long-term adaptability of the model in different environments. The method is used for fast network switching in the high-speed mobile environment.

The invention relates to the technical field of laser processing, in particular to a laser light path rapid switching method and related equipment. The laser light path fast switching method comprises the steps that a single laser emits original laser, the original laser passes through a laser collimator or directly enters a multi-channel reflecting mirror set to adjust a transmission path, a beam expander is selectively started for beam expanding according to the machining requirement, a preliminary shaping light beam is formed, and a basic light path matched with a follow-up optical device is constructed. According to the invention, through the integrated driving mechanism and grating ruler full-closed-loop control rapid switching device, the mobile carrier pre-installed with multiple DOEs is driven to realize accurate cutting-in of a target light spot element in a light path, and the problem of rapid adaptation of multiple light spot patterns in a single laser system is solved.

The invention relates to the technical field of power equipment, and discloses a power electronic transformer redundant controller switching method, which comprises the following steps of: constructing a redundant control array to collect analog quantity data of a power electronic transformer in real time so as to obtain two groups of instantaneous interaction data; the master controller generates a control logic by any one group of instantaneous interaction data to control the operation state of the power electronic transformer, and sends the other group of instantaneous interaction data to the slave controller in a preset interruption period to dynamically update the data of the slave controller; through the redundancy design of the master controller and the slave controller, when the master controller breaks down, the master controller can be quickly switched to the slave controller in a control period, and the switched master controller continues the last updated instantaneous interaction data of the master controller before switching, so that the non-impact switching is realized, the fluctuation or shutdown risk of the system is avoided, and the reliability of the system is improved. The stable operation of the power electronic transformer is ensured, and the maintenance and shutdown loss caused by faults is reduced, so that the overall maintenance cost is reduced.

The invention discloses a rapid communication and redundancy control method for an AGC substation of a distributed photovoltaic power station, and the method comprises the following steps: S1, receiving an automatic power generation control instruction from a power grid dispatching system in parallel and uploading real-time operation data of the photovoltaic power station through two independent communication links; according to the invention, the reliability and robustness of the system are fundamentally improved; by constructing a physical basis of parallel work of two paths of independent communication links and combining real-time state monitoring and a millisecond-level rapid switching mechanism, the method thoroughly changes the fragile situation that the whole substation is disconnected and the function is paralyzed due to a single communication channel or a power supply fault of a traditional system; when the main optical fiber link is interrupted due to construction damage or equipment failure, the system can automatically and seamlessly switch all communication services to the standby Ethernet or wireless link without depending on manual intervention, and it is ensured that the transmission path of the scheduling control instruction is always smooth.

Disclosed are a method and an apparatus for service fast switchover. The present disclosure may be applied in a spine-leaf architecture, wherein the method may be applied to a backbone spine node. The backbone spine node may loop back a data packet sent through a port connected to a faulty member path from Equal Cost Multi Paths (ECMPs) to which the faulty member path belongs, select one fast switchover member path from the ECMPs prior to routes in a network with the ECMPs converging, determine an access node connected to the fast switchover member path as a next hop, perform layer 3 forwarding on the data packet and encapsulate a specified Media Access Control, MAC, address as a destination MAC address, and send the data packet, with the specified MAC address as the destination MAC address, to the next hop through the fast switchover member path.

The invention relates to the technical field of three-dimensional scene information transmission, and discloses a digital information transmission method and system in a three-dimensional level loading process, and the method comprises the steps: obtaining three-dimensional level scene information, and dividing the three-dimensional level scene information into a plurality of scene region units; executing multi-factor priority evaluation; executing secondary priority evaluation to generate a resource task queue; adopting a multi-stage asynchronous streaming mechanism to complete digital resource transmission based on the loading granularity; and dynamically screening resources in combination with the GPU rendering budget. Compared with the prior art, the problem that loading efficiency and real-time performance cannot be considered in a complex three-dimensional scene is solved, and especially the technical problem that loading and rendering collaborative optimization is difficult to realize when a user view angle is quickly switched or the granularity difference of scene resources is large is solved. Due to the fact that space partitioning, dynamic priority evaluation and frame budget scheduling mechanisms are introduced, the problems of loading delay and resource redundant transmission are avoided, and the real-time loading efficiency and rendering fluency under the large-scale three-dimensional level scene are improved.

The invention relates to the technical field of data processing, and provides a quick switching method and system for displaying PDF document images in multiple windows. The method comprises the following steps: searching an associated drawing set according to a reference drawing; performing multivariate correlation analysis, and constructing a PDF index map; extracting a root node drawing, and displaying the root node drawing in a main window according to a reference scale; according to an interaction behavior of a user on the root node, positioning the associated sub-graph and updating main window display; splitting a new index graph taking the associated sub-graph as a root node; positioning a switching target in the new map according to the dynamic interaction behavior of the user; and controlling linkage proportional loading of the K secondary windows according to the target association features. The technical problems that a user needs to manually retrieve associated drawings and the switching efficiency is low due to the fact that traditional multi-window engineering drawing browsing lacks semantic association analysis are solved, and the technical effects that rapid drawing switching and dynamic display updating based on the PDF index graph are achieved, the user interaction experience is improved, and the drawing information association is enhanced are achieved.

The invention relates to the field of antenna welding devices, in particular to an RFID antenna tail end pin welding device which comprises a bottom plate, a welding gun arranged on the upper side of the bottom plate, a center column fixedly installed in the center of the upper side of the bottom plate, a transposition mechanism used for rapidly switching welding point positions and a correcting mechanism used for correcting the tail end of an antenna. The rotating base plate, the discharging base and the pushing assembly in the transposition mechanism are matched, circumferential rotation of the rotating base plate is matched with radial sliding of the discharging base, the discharging base drives a circuit board on the discharging base to slide once every time the rotating base plate rotates by a circle, and therefore automatic switching of welding point positions is achieved; the clamping plate, the pressing wheel and the wedge-shaped piece in the correcting mechanism are adopted, the wedge-shaped piece triggers the moving assembly to drive the clamping plate to clamp and straighten the tail end of the antenna, meanwhile, the pressing wheel downwards presses the tail end of the antenna, the problem of insufficient soldering or poor contact caused by antenna bending in the welding process is effectively solved, and the welding quality is ensured.

The invention provides a multi-serial-port intelligent switching method and system and a storage medium, and relates to the technical field of servers. The method comprises the following steps: initializing serial port configuration of the embedded equipment, and connecting default output of the embedded equipment to a public serial port; receiving a serial port data stream input by a user terminal through the public serial port; monitoring whether the data stream contains predefined special switching characters or not in real time through character detection logic; when the special switching character is monitored, analyzing the special switching character to determine a channel number of a target CPU serial port based on a predefined rule; dynamically switching the output of the public serial port to a logic channel corresponding to the target CPU serial port through serial port switching logic according to the channel number; and outputting the identification information of the currently connected CPU serial port to the user terminal to complete the switching operation. According to the method, the operation process is simplified, rapid switching among different serial ports is realized, and the operation efficiency and the user experience are improved.

The utility model discloses an integrated test control system of a power module. The integrated test control system comprises an NTC test loop and an insulation test loop. The system also comprises a change-over switch. The insulation voltage-withstanding tester passes through the NTC test loop and then leads out an NTC test terminal. An insulation test terminal is led out from the insulation voltage-withstanding tester through an insulation test loop; and the insulation test terminal and the NTC test terminal are respectively connected to the test end of the power module to be tested through the change-over switch. Compared with the prior art, the testing device has the advantages that two testing procedures are integrated together, different testing procedures can be rapidly switched through the change-over switch, NTC testing and insulation testing can be rapidly completed, testing efficiency is improved, the procedures of insulation testing and NTC isolation testing are simplified, and operation efficiency is improved.

The invention discloses a multi-protocol fusion VPN (Virtual Private Network) communication method and system based on dynamic tunnel switching, and relates to the technical field of computer network communication. According to the method, collection points are respectively arranged at an inlet and an outlet of a VPN, and a time synchronization timer, a data packet capture probe and a protocol analysis tool are utilized; the method comprises the following steps: accurately acquiring control instruction time delay Delay trl, control instruction packet loss rate Lossctrl, burst packet loss rate Burst and common flow delay variance VarDelay data, introducing a priority label into a VPN protocol encapsulation layer, marking a control instruction data flow as a first priority and binding the control instruction data flow to a rapid switching tunnel, marking a common monitoring data flow as a second priority and binding the common monitoring data flow to a conventional tunnel, and performing data transmission on the control instruction data flow and the common monitoring data flow; and differential transmission guarantee for different types of traffic is realized. After the method is optimized, it can be guaranteed that the key control instruction is not interfered by common flow in the network fluctuation or tunnel switching process, and the real-time performance and transmission reliability of the control instruction are remarkably improved.

In a current drive type display device of a variable refresh rate system such as an organic EL display device, an on-bias voltage line for supplying an on-bias voltage Vobs to be applied to a driving transistor in a pixel circuit is provided in a display portion in order to reduce an influence of a hysteresis characteristic of the driving transistor on display luminance. Therefore, when an operation mode is switched from the low refresh mode to the high refresh mode, among pixel circuits in the same column connected to the same data signal line, a pixel circuit to which data is written and a pixel circuit to which the on-bias voltage is applied can be mixed. This enables quick switching from the low refresh rate to the high refresh rate.

The invention discloses a full-automatic multi-component dispensing dynamic mixing proportion closed-loop control system, which relates to the technical field of semiconductor manufacturing, and comprises a multi-component feeding module, a dynamic proportioning execution module, an online detection module, an intelligent control module, a mixing reaction module, an anti-pollution module and a data management module, the device has the advantages that anti-sticking conveying and rapid switching of multi-form raw materials are achieved through a plurality of independent flow channels and inner wall diamond-like coatings of the multi-component feeding module in cooperation with a flow channel inlet vibrating screen and an outlet electromagnetic valve, a double-metering-pump parallel structure and a double-axial-flow type pulse damper are adopted in the dynamic matching execution module, and the dynamic matching efficiency is improved. And by combining a nonlinear model prediction controller of the intelligent control module and BP neural network adaptive compensation, the dynamic adjustment precision of the multi-component mixing ratio is remarkably improved, the mixing uniformity and purity reach the standard, the product scrapping caused by the ratio error is greatly reduced, and the photoresist production yield and stability are improved.

The invention provides a protocol interface circuit switching method for data acquisition and transmission of an unmanned ship, which belongs to the technical field of protocol interface circuit switching, and is characterized in that a multiplexing analog switch circuit and a standardized level conversion chip circuit are integrated in a circuit for data acquisition and transmission of the unmanned ship to realize seamless switching of communication ports among RS232, RS485 and TTL (Transistor-Transistor Logic); on the premise that navigation and operation of the unmanned ship do not need to be interrupted, a proper communication standard and a proper data transmission path are dynamically selected according to actual requirements. A multiplexing analog switch and a standardized level conversion chip are integrated in the circuit, so that seamless rapid switching among the RS232, the RS485 and the TTL can be realized. On the premise that navigation and operation of the unmanned ship do not need to be interrupted, a proper communication standard and a proper data transmission path can be dynamically selected according to actual requirements.

The invention provides a DPU intelligent network card working component switching method, a DPU chip, a DPU intelligent network card and electronic equipment, the DPU intelligent network card comprises a first component and a second component which can be switched mutually, and the method comprises the following steps: setting a value of a form control register on the DPU intelligent network card; writing corresponding configuration information into a starting configuration register on the DPU intelligent network card according to the value of the form control register; in the stage of restarting the DPU intelligent network card, guiding the read-only memory to analyze the configuration information in the starting configuration register; and correspondingly completing a starting process of the first component or the second component according to the analyzed configuration information, so that the DPU intelligent network card realizes working component switching. According to the technical scheme, the DPU network card and the intelligent network interface card can be quickly switched, so that the DPU intelligent network card works in the intelligent network interface card mode, and the overall energy efficiency ratio is improved.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments herein provide higher priority PLMN selection method during disaster situation in a wireless network (1000) by MS (100). In an embodiment, when MS (100) is registered for the disaster roaming service, the method includes selecting a higher priority PLMN in a priority order when the higher priority PLMN is available in the network and other non-forbidden PLMN when the higher priority PLMN is unavailable in the network, and registering the MS to receive the service in the network on one of the selected higher priority PLMN, and the selected other non-forbidden PLMN. In another embodiment, when the MS is not registered for the disaster roaming service, the method includes selecting a higher priority PLMN in a priority order when the higher priority PLMN is available in network, and registering the MS on the selected higher priority PLMN to receive the service in network.

The invention belongs to the related field of optical communication transmission technology, and discloses a telescopic butterfly-shaped optical cable, which comprises a main body sheath, an optical fiber, a flat steel wire and a V-shaped tearing opening, and is characterized in that the whole cross section of the butterfly-shaped optical cable is of a square structure with a certain length-width ratio; the optical fiber is arranged in the main body sheath and is wrapped by a single sleeve or double sleeves; the V-shaped tearing openings are kept symmetrically arranged on the long sides of the square structure, the flat steel wires are kept symmetrically arranged on the corners or the side portions of the square structure, and the flat steel wires are correspondingly used for storing redundant parts of optical fibers in a coil mode while having the function of a reinforcing piece. According to the butterfly-shaped optical cable, on the basis that an existing suspension wire steel wire structure is completely cancelled, the weak problem of the tearing opening part is effectively avoided, it is ensured that the butterfly-shaped optical cable has the needed mechanical strength, and the optical fiber containing space of the butterfly-shaped optical cable is improved; and meanwhile, reliable storage of internal standby optical fibers can be realized, and other functions such as rapid switching can be supported.

The invention provides a switching power supply device comprising a transformer which comprises a primary winding and a secondary winding and is used for converting an input voltage into an output voltage; the primary switching tube is connected with the primary winding and controls the on-off of the primary winding; the rectifying unit is connected with the secondary winding and rectifies the output of the secondary winding, and the rectifying unit comprises a semiconductor field effect transistor; the control unit is connected with the rectification unit and generates a control signal so as to control the switch of the semiconductor field effect transistor through the control signal; the current detection unit detects the output current and generates a current detection signal; the control unit receives the current detection signal and adjusts the control signal according to the current detection signal. According to the device, the COOLMOS with small internal resistance and high switching speed is adopted, the switching loss is reduced, the switching signal is dynamically adjusted by the control unit according to the real-time output current, the rectification conduction loss and the switching noise are reduced, the power supply conversion efficiency is improved, and the electromagnetic interference is reduced.

The invention relates to the technical field of intelligent recognition of transfer robots, and discloses a flexible transfer robot and an intelligent recognition system thereof.The flexible transfer robot comprises a chassis and a V-shaped groove feeding and discharging storage position, the upper surface of the chassis is fixedly connected with a truss supporting assembly, and a lifting assembly is arranged in the truss supporting assembly; compared with an existing operation system, compared with use of a mechanical arm moving device, the device is high in bearing capacity and low in maintenance cost, and compared with a track arranged on the mechanical arm moving device, the occupied area is small; compared with a truss manipulator, although the bearing capacity is high, the occupied space is large, equipment and site construction needs to be carried out in the two schemes, the equipment cost is high, by means of the flexible robot, the comprehensive cost can be saved by more than 2 million yuan, the equipment cost can be saved by 1.5 million yuan, the flexible robot can serve multiple production lines at the same time, no space is occupied, and the flexible robot is suitable for large-scale production. Construction transformation is not needed on site, and the product can be quickly switched within 10 minutes through the input-and-play flexible robot.

The invention provides a switch redundant resource scheduling method and device based on fault prediction, electronic equipment and a medium, and the method comprises the following steps: firstly, collecting multi-dimensional operation state data (such as port state, flow, environment parameters and the like) of a switch, and carrying out the standardization processing to generate a normalized feature matrix; calculating a fault rate estimation value and a health degree score based on the standardized data, and taking the values as prediction inputs; predicting a fault probability by using a deep learning model and combining health degree calibration to obtain an adjusted fault probability; based on the calibration probability and the health degree score, redundant resource priorities are calculated and sorted; finally, path selection is optimized according to the priority, pre-switching redundant resources are dynamically scheduled, rapid switching during faults is ensured, and fault extension is avoided. According to the invention, through reasonable scheduling, path optimization and load balancing, the fault response capability, resource utilization efficiency and stability of the switch system are effectively improved.

The invention belongs to a testing and processing method, and provides a single-probe non-contact dielectric material testing and processing integrated system and a single-probe non-contact dielectric material testing and processing integrated method in order to solve the technical problems of poor real-time performance and controllability and low production efficiency of the existing dielectric material testing and processing technology. Comprising a controllable objective table, a resonant cavity single probe assembly, a programmable multi-way switch and a control unit, a single epitaxial microwave resonant cavity probe is adopted as a core component, and rapid switching and regulation of the resonant cavity single probe assembly, a vector network analyzer and a program control microwave signal generation and regulation device are realized through the programmable multi-way switch. By means of the testing and processing integrated system, non-contact type dielectric constant dynamic measurement and microwave processing can be alternately completed.

The invention discloses a control method for fast switching from heavy load to light load of an LCC resonant converter, and relates to the technical field of power electronic converter control. The method comprises the following steps: S1, building an LCC resonant converter; s2, monitoring load current in real time, and identifying a load abrupt change signal; s3, calculating coordinates of an intersection point of the current working point and the target light load trajectory according to the state trajectory model; and S4, triggering a switch tube advanced turn-off instruction at the switching point, and switching the driving system to a light load mode along the transition track. According to the invention, a specific switching period is introduced during frequency switching, so that the resonant converter can be rapidly and stably switched from a heavy-load working mode to a light-load working mode. According to the switching mode, the voltage overshoot phenomenon during load sudden change can be effectively suppressed, the response time can be shortened, and the dynamic response performance of the resonant converter can be greatly improved. Compared with a traditional scheme, the system stability is improved, and the power loss is reduced.

The invention discloses a monitoring multi-beam phased array control system based on FPGA (Field Programmable Gate Array) control, which belongs to the technical field of radars and comprises a control module, an antenna array, a memory, an upper computer and a serial port-to-parallel port communication module. According to the invention, dynamic loading and online updating of beam parameters are realized, rapid switching of multi-beam modes is supported, amplitude-phase compensation parameters stored in a memory and data of a temperature sensor are linked in real time, the duty ratio can be dynamically adjusted, the environmental adaptability of the system is improved, and the storage structure is optimized. The logic resource consumption of large-scale array control is reduced, state code real-time feedback enhances the system maintainability, and quick response and safe turn-off in a high-temperature scene are ensured in combination with over-temperature protection interruption.

The invention discloses a pre-configuration protection method based on risk identification, and the method comprises the steps: collecting multi-dimensional data of a target electric power optical communication network, including logic topology information, a service demand set and dynamic environment data; logic links in the target power optical communication network are identified and divided into different shared risk groups, and a comprehensive risk index of each shared risk group is calculated; adding the shared risk groups of which the comprehensive risk indexes are greater than a preset risk index threshold value into a to-be-protected queue, and generating an optimal standby network loop for each shared risk group in the queue to obtain a network protection ring of the to-be-protected queue; when a to-be-processed service request is received, selecting a target protection path for the to-be-processed service request from the network protection ring, so that the to-be-processed service request is switched to the target protection path when a fault occurs; according to the invention, the network can be rapidly switched when a fault occurs, and the reliability and recovery speed of the power optical communication network are improved.