69results about How to "Go digital" patented technology

The invention discloses a mathematical ancient book illustration identification method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring a mathematical ancient book illustration; dividing the mathematical ancient book illustration into a character area, a formula area and an image area, and recording respective position information of the three parts as first position information; carrying out OCR (Optical Character Recognition) on the character region, carrying out formula restoration on the formula region, and restoring the image region; and performing layout reconstruction on the math ancient book illustration according to the text identified by the OCR, the restored formula, the restored image and the first position information to obtain a math ancient book illustration identification result, thereby realizing effective identification and digitization of the math ancient book illustration.

The invention discloses a detection laboratory total factor digital twinning model construction method and an intelligent operation and maintenance system, and relates to the field of digital twinning, and a total factor digital twinning model comprises a detection laboratory physical object model, a detection laboratory virtual model, a total factor data model, a data interaction model, a learning decision model and an operation and maintenance management model. Real-time mapping is kept between the physical object model and the virtual model of the detection laboratory; the total element data model is used for collecting, inputting, processing and updating multi-source heterogeneous data in the digital twinborn model of the detection laboratory; the data interaction model carries out fusion transmission on real-time data among the models; and meanwhile, the learning decision-making model performs autonomous decision making and diagnosis, and functions are integrated and displayed through the operation and maintenance management model, so that the intelligent operation and maintenance level of the detection laboratory is further improved. The whole detection process of the detection laboratory is digitalized, the communication cost of the detection test process is saved, the manpower and time cost is saved, and the detection efficiency is improved.

The invention provides a sewing production management system and method based on the Internet of Things, electronic equipment and a medium, and the system comprises Internet of Things equipment, a first application end, a second application end and a first cloud platform. The data acquisition module is used for acquiring and storing operation data and registration information of the Internet of Things equipment, application data of the first application end and application data of the second application end; the second cloud platform is in communication connection with the first cloud platform through a system interface and is used for generating a production report based on the operation data and the registration information of the Internet of Things equipment, the application data of the first application end and the application data of the second application end; and the third application end is used for displaying the production report. The technical problems of low production efficiency and disordered management of traditional clothing enterprises are solved, production management personnel and employees can be helped to carry out production management and operation more conveniently, digitization and intelligentization of the production process are realized, and the production efficiency and the product quality are improved.

The invention provides a multi-station integrated numerical control rotary vertical reaming and honing machine which comprises a base, a stand column fixedly installed on the base, a shell fixedly installed on the outer sides of the base and the stand column, a front door, a side door and a PLC control cabinet arranged on the shell, the front door and the side door are hinged to the shell, and a fixed table is fixedly installed on the inner side of the base. According to the multi-station integrated numerical control rotary vertical reaming and honing machine, each main shaft is independently provided with a second servo motor, so that each main shaft can be independently driven under the driving of the corresponding second servo motor, and corresponding reaming tools and honing tools can be installed in each floating chuck according to the machining sequence; by the adoption of the structure, the numerical control rotary vertical reaming and honing machine can achieve reaming and honing of the parts on a single machine tool, the machine tool is compact in structure, simultaneous machining of multiple parts and multiple shafts can be achieved, the working procedures are concentrated, the machining efficiency is high, and the occupied area is small.

The invention relates to an airtight leak detection device and method for a pressure system. The device solves the problems in the prior art that the judgment standards are not unified, quantitative measurement cannot be achieved, the airtight leak detection results of the entire pipeline system are unstable, and detection automation cannot be achieved. The leak detection system comprises a pressure storage buffer bottle, a differential pressure gauge, a self-test pressure storage bottle, a self-test pipeline, a main pipeline, an exhaust pipeline, a balancing valve, a first stop valve, a boosting component, and two groups of temperature sensors. One end of the main pipeline is connected to the pressure storage buffer bottle, and the other end is used to connect to the pipeline system to be tested, and the first stop valve is installed at the other end of the main pipeline. The exhaust pipeline, the self-test pipeline and the differential pressure gauge are all arranged on the main pipeline, and the other end of the exhaust pipeline is connected to an external device. The other end of the self-test pipeline is connected to the self-test pressure storage bottle. The balancing valve is arranged on the main pipeline between the two ends of the differential pressure gauge. Two groups of temperature sensors are installed on the main pipeline. The invention also proposes an airtight leak detection method for the leak detection device.

The utility model discloses a kind of test equipment for pneumatic control valve or actuator in the field of pneumatic actuator detection, including valve displacement measuring instrument and control cabinet;Control cabinet is delivered to pneumatic control valve or actuator and measures the pressure of compressed air, valve displacement measuring instrument measures the displacement of pneumatic control valve or actuator;The controller of control cabinet transmits pressure and displacement data to PC host computer by Ethernet, and PC host computer generates the detection report of pneumatic control valve or actuator.The utility model can improve the detection quality and efficiency of pneumatic actuator, improve the production efficiency of pneumatic actuator production enterprise, meet the increasing delivery requirement, solve the problem of low efficiency of factory inspection, stroke etc. rely on visual inspection, realize the digitization and intelligentization of production final inspection.

The utility model discloses a multicore wire stranding machine, including frame, swivel support, rotation axis, drive mechanism and at least two constant tension pay -off device, constant tension pay -off device sets up in swivel support and gives out core wire, drive mechanism drives rotation axis and swivel support rotation, constant tension pay -off device includes frame and sets up in the pay -off reel of frame, pay -off servo motor, gyro wheel, flexible connecting piece, rotation servo motor, tension take -up wheel, displacement detection subassembly and servo controller, and the output of pay -off servo motor is connected with the pivot of pay -off reel, and gyro wheel is linearly movably arranged in the frame, the output shaft of rotation servo motor is connected with tension take -up wheel, and displacement detection subassembly detects the rotation angle of the output shaft of rotation servo motor or detects the displacement of gyro wheel. The utility model can automatically control the tension of the core wire pay -off of stranding machine, makes the tension and line speed of cable keep constant, realizes digitization and intelligent production, effectively improves production efficiency and the quality of cable.

The invention relates to the technical field of storage, loading or distribution, in particular to transportation. According to the technical scheme, the method comprises the steps that the tank car dispatching state of each process node is acquired and monitored; according to the tank car dispatching state and the operation state, tank car dispatching stage statistics are obtained; calculating a waiting tank car number low value coefficient, and establishing a scheduling model; and scheduling the tank car according to the scheduling model. The system is a main control module, receives data and determines a scheduling instruction through a scheduling model; the data acquisition module is used for acquiring real-time data from the equipment and the communication module; the supervision module receives the scheduling instruction and confirms whether the scheduling instruction passes feedback to the communication module; and the communication module is used for receiving and feeding back the reservation information of the external tank car and sending a scheduling instruction to the current equipment. The problems that in the prior art, the execution efficiency is low, and coherent operation is difficult are solved, the method and system for dispatching the LNG liquid output vehicle are provided, and the purposes of ensuring dispatching fairness, being high in adaptability and keeping coherent operation are achieved.

The invention discloses an S-type pitot tube calibration coefficient prediction method based on CFD, and the method is realized through the following steps: S1, carrying out CFD numerical simulation based on parametric modeling, and obtaining a calibration coefficient set of an S-type pitot tube under different installation angle deviations, flow velocity range conditions and environmental parameters; s2, integrating simulation data, and constructing a feature vector data set of the key influence parameters; s3, dividing the data set into a training set and a test set; s3, based on an RBF algorithm, constructing a high-precision nonlinear prediction model by using the training set; and S4, verifying the performance of the model by using the test set, and judging whether the prediction accuracy meets the expectation or not. A CFD simulation technology and a machine learning algorithm are integrated, the problem that a traditional real flow calibration device is limited in capacity and cannot reproduce on-site complex conditions is solved, and a solution is provided for high-precision prediction and correction of calibration coefficients under on-site complex installation conditions and a non-uniform flow field.

The invention belongs to the technical field of document scanning, and discloses an X-ray-based ancient document three-dimensional scanning device, which comprises an X-ray source module, a detection module, a main control module, a document positioning and supporting module, an ink component identification module, an imaging and three-dimensional reconstruction module and a data storage and processing module, according to the method, damage to document materials caused by physical contact is avoided, and abrasion and tearing of ancient books in the scanning process are greatly reduced; through multi-level scanning, an internal text structure of the ancient book is reconstructed, page-by-page display is realized, and a high-definition text image can be obtained even in a literature closed state; the absorption difference of X-rays on different component materials is utilized to effectively distinguish printing ink and paper, so that the content of ancient books is clear and visible, and the method adapts to different historical ink components; non-contact batch scanning of a large number of literatures is achieved, the digitization requirement of collection ancient book protection is met, and a more convenient access way is provided for researchers.

The application discloses a method, system, chip, device and computer readable storage medium for rapidly identifying the producing area of Amomum villosum and evaluating the quality of Amomum villosum based on an electronic nose and an electronic tongue, and belongs to the technical field of traditional Chinese medicine identification. The technical problems to be solved are low detection efficiency and high cost of the existing Amomum villosum identification method. The technical solution points are as follows: a method for rapidly identifying the producing area of Amomum villosum and evaluating the quality of Amomum villosum based on an electronic nose and an electronic tongue, which comprises the following steps: electronic nose test sample preparation and electronic tongue test sample preparation; an electronic nose system adopts a direct headspace air suction method to collect signals of the electronic nose test sample; an electronic tongue system collects signals of the electronic tongue test sample; average values of response values are extracted to form an odor characteristic vector; data analysis and producing area identification / quality evaluation are performed according to the fusion characteristic vector, and finally, model application is performed.

The application discloses a kind of wind generating set intelligent joint commissioning test system and test method, test system is by fan processor, hub processor, communication system, data storage and console constitute, system control and detect fan each component sensor data, judge its performance reliability, finally generate result report, store into database, establish fan digital file;Test control system and unit data transmission protocol TCP / IP, control system passes through output operating system instruction, controls unit equipment action and collects sensor data and system data and carries out comparison judgment, finally generates unit test report.The application improves the test efficiency and quality of wind generating set before delivery, guarantees the high efficiency and accuracy of wind generating set delivery test, guarantees the effective authenticity of test record, is favorable to wind power generating set product digitization, is convenient for tracking and management to wind power generating set, so as to be favorable to realizing the production cycle digitization of wind power generating set.

This invention provides an intelligent CNC hydraulic system and control method, including a sensing and monitoring unit comprising a multi-source heterogeneous sensor network deployed at key nodes throughout the system. The invention is rationally designed, using a multi-source heterogeneous sensor network deployed throughout the system to simultaneously collect multi-dimensional operating parameters such as pressure, flow rate, temperature, and vibration. Edge computing is used to complete data preprocessing and fault-sensitive feature extraction. Relying on an SVM-LSTM dual-model fusion fault intelligent diagnosis module and integrating a fault tree FTA analysis submodule, it achieves accurate classification of fault types, rapid location of fault points, and root cause tracing. It also provides early warning of early system faults, significantly improving fault diagnosis accuracy compared to traditional threshold alarm methods. Furthermore, it can identify fault types that traditional methods cannot detect, such as directional valve sticking, predicting fault development trends in advance and effectively preventing equipment damage caused by fault escalation.

The application discloses a kind of based on digital steel coil's full life cycle product carbon footprint calculation method, comprising the following steps: A1: determining the system boundary of carbon footprint in the full life cycle of digital steel coil, and collecting activity data;A2: according to the actual production process and material consumption data of digital steel coil, determine the direct carbon emission source and indirect carbon emission source of each stage;A3: determine and collect the direct carbon emission source factor and indirect carbon emission emission factor in each stage;A4: using the emission factor of direct carbon emission source and the emission factor of indirect carbon emission source, build the carbon emission calculation model of each stage, obtain the partial carbon emission of each stage, and corresponding carbon load type;A5: using the production process path of digital steel coil, the carbon emission of last stage product is transferred to the material input of next stage, and the cumulative carbon emission of each stage product is obtained.The life cycle carbon footprint of digital steel coil is obtained by the carbon emission calculation model of each stage.

The invention relates to the technical field of extrusion production line automatic control, in particular to an extrusion production line self-adaptive control method and system based on real-time meter weight feedback. The method comprises the following steps: monitoring the meter weight of a semi-finished product in real time and obtaining a measured value; comparing the value with a target value to calculate a deviation; calculating a newly set linear velocity through a specific control formula based on the deviation, the current linear velocity and a dynamic adjustment coefficient; and adjusting the linear speed according to the linear speed and forming closed-loop control. The dynamic adjustment coefficient can be adaptively adjusted according to statistical characteristics of a historical error sequence, such as a trend factor and a stability factor, and has a self-learning capability. The system comprises a meter weight measuring device, a controller for executing the method and a speed executing device. According to the invention, the meter weight control is changed from post detection to in-process control, real-time, accurate and self-adaptive speed adjustment is realized, the consistency of product quality is effectively improved, the waste of raw materials is remarkably reduced, and the dependence on artificial experience is reduced.

The present invention relates to an intelligent nailing system for cruciate ligament reconstruction, belonging to the technical field of medical devices, including screws, nailing drive mechanisms, locking and clamping mechanisms, depth measuring mechanisms and intelligent control systems, wherein the nailing drive mechanisms include a multi-degree-of-freedom mobile seat, a telescopic pole fixed on the multi-degree-of-freedom mobile seat, and a rotating motor fixed on the telescopic end of the telescopic pole, and a rotating twisting rod movably arranged on the main shaft of the rotating motor, the locking and clamping mechanisms include an outer driving sleeve, an inner sliding sleeve and a clamping sheet, the depth measuring mechanism includes a depth nail pre-nailed into the joint cavity and a high-definition camera, the tail of the depth nail is provided with a length scale, and the intelligent control system includes a PLC controller, a display, a Bluetooth transmitter and a Bluetooth receiver. The present invention realizes the mechanization, automation, digitization and intelligence of the nailing process, liberates manpower and material resources, and improves the quality and efficiency of surgery.

The invention relates to the field of laser cutting, and particularly provides a laser cutting machine optical path coaxial calibration device and method, and the device comprises a calibration module body which is provided with a mechanical interface consistent with a cutting head nozzle installation interface; the radial polarized light modulation module is fixed in the body and is used for modulating the laser into radial polarized light; the annular polarization sensor array is fixed in the body, is positioned at the downstream of the modulation module and comprises a plurality of polarization sensors which are uniformly distributed along the circumference, the detection surfaces of the sensors are positioned on the inner wall surface of the array and are used for detecting polarization angles in respective directions and outputting signals, and the geometric center of the array represents the theoretical axis position of the nozzle when the calibration module is mounted; and the data processing and display module is in communication connection with each sensor and is used for calculating the offset of the laser beam center relative to the geometric center based on the polarization angle signal and visually outputting the offset. According to the invention, the precision and efficiency of coaxial calibration of the optical path of the laser cutting machine are improved.

The invention discloses an outcrop position positioning method and device based on a digital outcrop model, and the method comprises the steps: collecting outcrop data of a target basin in a research area, and building a digital outcrop database of the target basin; based on the digital outcrop database, establishing a 2.5-dimensional digital outcrop model of the target basin, exporting a corresponding orthoimage based on the 2.5-dimensional digital outcrop model, and generating a 2.5-dimensional outcrop profile image; and activating any link point in the 2.5-dimensional outcrop profile image, calling a three-dimensional digital outcrop model corresponding to the link point through a preset API interface, and positioning a geological outcrop position corresponding to the link point in the three-dimensional digital outcrop model. The geological outcrop position can be accurately positioned, and efficient and accurate acquisition of geological information is realized.

The invention relates to a small four-direction angle adjusting mechanism, belongs to the technical field of laser control and detection, and solves one of the problems that an existing laser emitting device detection device is tedious and complex in operation process, large in equipment size or large in weight, the adjusting precision seriously depends on the hand feeling of an operator, or the detection efficiency is low and the like. The mechanism comprises an orientation driving mechanism, a high-low driving mechanism, a supporting rotating mechanism, a zero position self-checking mechanism and an adaptive assembly, the orientation driving mechanism, the high-low driving mechanism and the supporting rotating mechanism achieve four-direction angle adjustment of the mechanism, and the adaptive assembly rapidly clamps detectors of different sizes. According to the invention, rapid and repeatable fine adjustment of four-direction angles of the optical system of the detector of the laser emitting device can be realized, the structure is compact and portable, the detection efficiency is high, and the adaptability is strong.

The application discloses a dam electric method continuous imaging method of homologous fusion and step optimization, relates to the technical field of dam imaging, and comprises the following steps: calculating an initial reserved electrode number; arranging an initial electrode array, and establishing an electrode array digital file; collecting apparent resistivity and storing; obtaining an effective detection width, dynamically optimizing the reserved electrode number through a blind area risk function; performing unilateral step progressive array continuation detection, updating electrode coordinate numbering and horizontal coordinate information; extracting apparent resistivity data of an overlapping area, calculating an electrical fluctuation coupling factor, performing weighted fusion, diagnosing electrode contact quality and generating a maintenance prompt; performing progressive detection along a dam axis in one direction repeatedly until a detection end point is covered, and constructing a continuous standardized electrical variable data set; and generating a continuous imaging profile through a continuous geoelectric section imaging model. The application can adapt to the engineering requirement of long-distance and high-precision continuous detection of soil embankments, and provides a technical reference for digital upgrading in the geophysical prospecting field.

The application discloses a polishing-etching integrated processing technology for high-finish jade crystal stone material, and the technology comprises the following steps: providing an integrated processing device integrating chemical mechanical polishing and chemical etching functions, and deploying a multi-source sensor online monitoring system; synchronously collecting multi-dimensional parameters such as polishing pressure, torque, temperature, pH value, fluoride ion concentration, acoustic emission signal and online roughness; adopting a random forest algorithm to screen key features, and establishing a surface roughness real-time prediction model based on support vector regression or artificial neural network; the application realizes real-time sensing, accurate prediction and self-adaptive regulation of jade crystal stone polishing-etching integrated processing, the processing efficiency is improved by more than 50%, the surface roughness is less than or equal to 0.01 mu m, the good product rate is greater than or equal to 94%, and the application is suitable for high-finish jade crystal stone material processing in the fields of high-end building decoration, electronic cover plate and precise optical device.

This invention provides a measurement method and device for alignment during spacecraft loading cycles, including the following steps: S1: Initial docking of the launch tube and the spacecraft support device; S2: Measuring the Z-axis deviation between the launch tube guide rail and the support device guide rail; S3: Measuring the Y-axis deviation between the launch tube guide rail and the support device guide rail; S4: Adjusting the Y and Z-axis attitudes of the launch tube; S5: The visual measurement module captures an initial image of the launch tube guide rail end face and extracts key feature points; S6: Mounting the spacecraft onto the support device guide rail; S7: Taking a photograph of the launch tube guide rail end face, extracting key feature points, and comparing the positions of the key feature points with those in the initial photograph, adjusting the Z-axis attitude of the launch tube; S8: Comparing the key feature points captured by the visual measurement module with those in the initial photograph. This application has the effect of improving product quality stability and assembly process reliability, and reducing the probability of risk occurrence.

The application relates to the technical field of metal material surface strengthening, in particular to a self-adaptive laser shock peening method and system based on light path dynamic regulation and real-time monitoring. The method comprises the following steps: preprocessing and constructing a digital twin model, dividing different curvature processing areas and presetting peening parameters; dynamic focusing galvanometer and beam shaper are cooperated to ensure that laser is vertically incident and the spot shape and area are constant; an adjustable nozzle adaptively supplies a constraint layer, an ultrasonic sensor real-timely monitors water film thickness and feeds back adjustment; a high-speed spectrometer and an acoustic sensor collect multiple signals, plasma parameters are inversely deduced to evaluate the shock effect, energy compensation is triggered when an abnormality occurs, and closed-loop control is formed. The system corresponds to three-dimensional scanning, digital twin processing, dynamic beam adjustment, constraint layer supply, quality monitoring module and a control system. The method and system are suitable for complex curved surface workpieces, improve peening uniformity and stability, and are suitable for high-precision peening processing of materials such as titanium alloy.

This invention relates to the field of yield strength calculation technology, and in particular to a method for calculating the yield strength of 42CrMo steel used in engineering machinery. The method involves establishing a dimensionless model through data fitting between the yield strength Y1 and the quenching temperature X1, tempering temperature X2, and the mass percentage of Mn element X3: Y1 = 5479 - 2.81X1 - 4.643X2 + 889X3. This invention can accurately reflect the quantitative relationship between the heat treatment process parameters of 42CrMo steel, especially the tempering temperature and the yield strength, enabling the prediction of yield strength. This allows engineers to accurately predict the final properties of the material when formulating the heat treatment process, and to actively and accurately control the yield strength of the material by adjusting the process parameters.

The invention discloses an intelligent converter station secondary system, and the scheme achieves the digitization and networking of a secondary circuit through the access of a merging unit and an intelligent terminal and the transmission of signals through SV and GOOSE networks, reduces the cable wiring of the secondary circuit, greatly saves the cable work amount of a converter station, and reduces the design cost. Besides, the secondary loop is visualized and can be monitored in real time through the merging unit and the intelligent terminal, so that the maintenance efficiency of the secondary system of the converter station is greatly improved, and the intelligent degree of the secondary system of the converter station is improved.

The application discloses an intelligent carbon metering device and a carbon emission calculation method thereof, and the method comprises the following steps: pre-processing multi-source data; using a deep learning model to identify the working conditions of each device, and simultaneously considering device aging correction to improve identification accuracy; establishing a bottom-up calculation model of carbon emission driven by energy consumption and a top-down calculation model based on emission concentration for concentration inversion; and obtaining the final carbon emission result through adaptive Kalman filtering fusion. The application identifies the device state in real time through AI, dynamically matches the emission factor, and adopts adaptive Kalman filtering to fuse the energy consumption and concentration double models, thereby significantly improving the accuracy and robustness of carbon metering. The method can effectively solve the problems of hysteresis, singleness and error accumulation in the traditional carbon metering method, realize real-time, accurate and traceable carbon emission calculation from the device level to the regional level, and realize the digitization, dynamicization and intelligentization of carbon metering.

The invention provides a body assembly platform device, which comprises an assembly platform body, a bracket and an anti-explosion electric cabinet, and is characterized in that the anti-explosion electric cabinet is mounted in the assembly platform body and is used for accommodating a control system of the body assembly platform; the bracket is connected with a linear guide rail on the assembling platform body through a sliding block and provided with a mechanical connector connected with a rack on the assembling platform body. And the bracket can realize three-degree-of-freedom adjustment of translation along the axis of the product on the linear guide rail, lifting perpendicular to the horizontal plane and rolling around the axis of the product. The control system is adopted for production line scheduling, no person participates in the whole transfer process, information can be integrated to the production line management and control system, digitization and informatization of transfer assembly can be achieved, the working intensity of workers can be greatly relieved, and the assembly speed can be effectively increased.

The present invention relates to a sand core clamp with full situational awareness, including a support frame, a swing frame, a swing driving member and a clamping member, wherein the swing driving member is arranged on the support frame, the swing frame is movably connected to the support frame, the swing driving member is transmission-connected to the swing frame and is used to drive the swing frame to swing, the swing frame includes a top beam and two clamping arms arranged oppositely, the clamping member is arranged on the two clamping arms arranged oppositely and is used to clamp the sand core, a force sensor for detecting the clamping force is arranged on the two clamping arms arranged oppositely of the swing frame, a visual sensor for detecting the appearance coating state of the sand core and the target position of the sand core is arranged on one side of the top beam of the swing frame, a data communication interface for data communication with a controller is arranged on the support frame, and the force sensor and the visual sensor are electrically connected to the data communication interface. The implementation of the present invention can ensure the quality of the sand core dip coating while improving production efficiency.

This invention relates to the field of dental surgery technology and discloses an intelligent dental surgical robot and its control system. The robot includes a main body, a display component, a locking component, a moving component, and a control system. The display component is mounted on the upper part of the robot body, the locking component is installed inside the display component, and the moving component is installed inside the robot body. The control system is built into the control chamber of the robot body and is electrically connected to the display component, locking component, and moving component. It is used to realize motion control of each component, surgical data interaction, equipment status monitoring, and abnormal warning. The display component of this invention uses a slider and an adjustment block to facilitate adjustment of the height of the touch screen according to the needs of medical personnel, improving the comfort of medical personnel of different body types when using the touch screen. Simultaneously, the locking component uses a locking block and a locking slot to facilitate adjustment of the angle of the touch screen while ensuring the stability of the touch screen after angle adjustment.

The invention provides a special-shaped bridge frame contour skeleton line extraction method suitable for an offshore converter station electrical specialty. The method comprises the following steps: S1, obtaining a CAD design file of a target electrical specialty; s2, docking CAD analysis service, extracting a bridge layer polyline, and normalizing coordinates by taking the equipment reference point as an original point; s3, preprocessing the line segment primitives to enclose a polygon; s4, filtering the output polygon in the step S3: calculating a difference value between the area of the polygon and the area of the minimum enclosing rectangle of the polygon, and if the difference value is greater than 1% of the area of the minimum enclosing rectangle, determining that the bridge is a special-shaped bridge; and S5, according to the characteristics of consistency and connectivity of the cross section size of the special-shaped bridge in the electrical professional CAD drawing of the offshore converter station, screening associated components connected with the special-shaped bridge, obtaining the cross section width W through the geometrical relationship, and associating the cross section width W to the corresponding special-shaped bridge. According to the invention, the special-shaped bridge and the contour skeleton line thereof can be automatically identified, the geometrical characteristics of the special-shaped bridge can be accurately described, and the digitalization of the special-shaped bridge can be realized in an auxiliary manner.