293 results about "Rail traffic" patented technology

The invention discloses an energy storage rapid compensation method and system based on track overhead line system voltage fluctuation feature recognition, and relates to the technical field of track traffic traction power supply. The method comprises the following steps: synchronously acquiring voltage and current signals of the overhead line system, and extracting a composite feature vector containing disturbance root attributes and transient change rate; on the basis of the vector, a transient energy vacancy sequence covering the ultra-short-term future is output in real time through a prediction model fusing dynamic phasor analysis and a feedforward neural network; according to the sequence, a cooperative control strategy fusing overshoot and active damping is generated in combination with a proximity compensation principle and a voltage recovery state so as to drive an along-line energy storage unit; the strategy is executed in advance, compensation energy is injected, and finally double closed-loop correction is conducted based on the voltage residual error. According to the method, the problems of response lag, unclear disturbance identification, poor collaboration and lack of adaptive ability in the prior art are solved, and advanced, accurate, collaborative and self-optimized rapid suppression of the voltage fluctuation of the overhead line system is realized.

The invention discloses a railway marshalling station intelligent scheduling control method and system based on hierarchical reinforcement learning, and belongs to the technical field of rail transit. In the hierarchical reinforcement learning framework, the upper layer achieves a global marshalling priority strategy by using a deep Q network trained in stages and by means of dynamic reward function design; and the lower layer optimizes a PPO algorithm by means of a near-end strategy of dynamic action space cutting, and regulates and controls the state of the debugging equipment in real time. A security policy distillation technology is adopted in a marshalling station scheduling control process, and a security policy passing verification is extracted as a rule tree to serve as an initial policy for reinforcement learning, so that a training convergence process is accelerated. A transfer learning method is further applied, so that the method can adapt to the dynamic flow distribution requirements of marshalling stations of different scales. By adopting the technical scheme of the invention, the physical limitation and the operation safety standard of the railway marshalling station can be met as far as possible.

The utility model relates to the technical field of rail traffic, in particular to an eccentric support type anti-falling guard rail which comprises a guard rail support, a walking rail and a guard rail, the walking rail is vertically locked at the middle bottom of the guard rail support through a first locking mechanism, a guard rail eccentric support with the top sleeved with an elastic sleeve shoe is arranged at the top of one side of the guard rail support in a clamped mode, and the elastic sleeve shoe is arranged on the guard rail eccentric support. The guard rail and the guard rail eccentric support are horizontally locked at the top of one side of the guard rail support through the second locking mechanism, the guard rail eccentric support and the elastic sleeve shoe are adopted to solve the problem that original cushion blocks are large in model number and prone to falling off, the transverse load is increased, the guard rail strength of the guard rail is further guaranteed, and the service life of the guard rail is prolonged. The eccentric support type anti-falling guard rail is convenient to install and not prone to falling off, meanwhile, the installation height is kept constant, the transverse load is high, and the strength of the guard rail is high.

The invention provides a sensor layout method and device and a train, and can be applied to the technical field of rail transit. The sensor layout method comprises the following steps: determining a plurality of to-be-screened position points for installing sensors in a train; clustering the plurality of position points according to the strain energy density and the information entropy of each position point, and determining at least one to-be-screened region according to a clustering result; the multiple position points, the to-be-screened area and mechanical and load data, obtained through pre-testing, of all the position points are input into a pre-constructed target layout model, at least one initial layout scheme is output, and the initial layout scheme comprises the number of sensors and the installation positions of the sensors; and optimizing the at least one initial layout scheme by utilizing a multi-objective optimization algorithm and executing multiple iterative optimization operations to obtain a target layout scheme.

The invention discloses a remote rail fault intelligent detection system based on big data driving, and relates to the technical field of rail traffic intelligent monitoring and state maintenance. The problems that a traditional detection method is high in manual dependence, slow in response and lack of prediction and self-repairing capacity are solved. According to the method, multi-source data are acquired through a fixed sensing network and a mobile inspection vehicle, a multi-scale digital twin is constructed and updated, and a probabilistic fault evolution graph is generated based on a random phase field model; collaborative judgment is carried out based on distributed edge computing nodes, and a maintenance scheme is generated by adopting a hybrid geometric distance retrieval immune memory bank; and finally, collaborative repair is executed through mixed reality and a micro-robot cluster, and continuous optimization of the system is realized based on federated learning and case-based reasoning. According to the system, integrated closed loop of track state sensing, fault prediction, intelligent decision making and self-repairing is achieved, and the detection foreseeability, the maintenance accuracy and the system self-adaptive capacity are improved.

The invention belongs to the technical field of rail traffic signals, particularly relates to a rail circuit interference test analysis method, system and equipment, and aims to solve the problems that a mixed interference source is difficult to accurately position, accidental faults cannot be captured and diagnosis is subjective. The method comprises the following steps: performing multi-channel synchronous acquisition and real-time storage on a voltage signal and a current signal of a track circuit; processing the original signal in real time, analyzing different frequency components through high-resolution spectrum analysis, and comparing with a preset threshold in combination with time domain analysis to trigger an alarm and generate a real-time analysis report; and performing intelligent analysis on historical data, performing verification and feature recognition on fault period data by establishing a probability model of a normal working condition, and generating a diagnosis analysis report. According to the method, the interference source can be accurately separated and positioned, the transient fault is automatically captured, objective and intelligent fault diagnosis is provided, and the efficiency and reliability of track circuit troubleshooting are remarkably improved.

The invention provides an intelligent rail tramcar dynamic section road right release method and system based on V2X cooperation, and relates to the technical field of intelligent rail traffic control, and the method comprises the steps: deploying a sensing network at a key node of a road section based on V2X, and obtaining the multi-source data of the road section in real time based on the sensing network; acquiring real-time information of social vehicles and intelligent rail tramcars based on the multi-source data; according to the real-time information, dynamic division is carried out, a three-level section range is calculated in real time, a plurality of sections are obtained, and the sections comprise an emergency protection area, a dynamic buffer area and a free passing area; and carrying out differential control on the social vehicles and the intelligent rail tramcars based on a three-level section road right release strategy, and carrying out road right release on each section. The problem that a traditional fixed section division mode cannot adapt to a dynamic change scene and is difficult to meet the requirement for reasonable management and control of the intelligent rail tramcar and the social vehicle in an open road right scene is solved.

The invention discloses a road network traffic state prediction method based on large language model spatial-temporal feature embedding, and belongs to the technical field of calculation, reckoning or counting. According to the method, semantic embedding of space and time is extracted by pre-training a large language model, and the space-time heterogeneity of a traffic system is quantified; a dynamic adjacent matrix is constructed by using Tucker decomposition, and combined modeling is performed on historical traffic data in combination with a dynamic space-time diagram convolutional network, so that high-precision prediction of a future traffic state is realized. The method does not need manual feature design, has good generalization ability and multi-mode adaptability, can be widely applied to scenes of road traffic, rail traffic demand prediction and the like, and significantly improves prediction accuracy and control response ability in a complex traffic environment.

Embodiments of the application relate to a technical field of traffic trackside intelligent devices. A trackside device includes: a collection module configured to collect detection information at a side of a track; a processing module configured to process the detection information to obtain a processing result; a trackside resource control module configured to drive and control a trackside resource when a trackside resource request is received from a target train and the trackside resource is in a released state, wherein the trackside resource control module is further configured to monitor a state of the trackside resource; and a communication module configured to communicatively connect with a ground center and the target train.

The elastic wide sleeper comprises a sleeper body, the sleeper body comprises a sleeper middle part and sleeper edge parts symmetrically distributed on the two sides of the sleeper middle part, rail bearing tables are arranged on the sleeper edge parts, rail bearing grooves are formed in the rail bearing tables, the top face of the sleeper middle part is a plane, and the plane is as high as the bottom ends of the rail bearing tables on the two sides; the pillow middle part and the pillow edge parts are equal in width, and the width is larger than 500 mm. According to the elastic wide sleeper, the problems that in the prior art, stress of a sleeper and a ballast bed is concentrated, frequent maintenance and repair are needed, and the operation cost is large are solved, and the purposes of reducing the maintenance and repair frequency of a track line and reducing the operation cost are achieved.

The invention discloses a quick release structure for a rail traffic communication module and a heat dissipation assembly thereof and a use method. The quick release structure comprises a bottom plate, a mainboard, a communication module, a heat conduction pad and a heat dissipation plate. The bottom plate is fixedly connected with the mainboard through a pressing rivet stud, the communication module is installed on the mainboard, the heat dissipation plate is arranged on the outer side of the communication module, one end of the heat dissipation plate is detachably clamped with a bottom plate hook hole through a hook, the other end of the heat dissipation plate is screwed and locked with a mainboard module mortise column through a captive screw, and a heat conduction pad is arranged between the communication module and the heat dissipation plate and used for heat conduction. During installation, the heat dissipation plate is rotationally attached to the heat conduction pad and then locked, and during disassembly, the heat dissipation plate can be taken down by loosening the screws and rotating reversely. The structure realizes quick disassembly and assembly of the heat dissipation assembly, is simple and convenient to operate, does not need tools, has excellent heat dissipation performance, is suitable for various rail transit communication modules, and has the advantages of compact structure, high universality, high maintenance efficiency and the like.

The utility model discloses a limiting device for track noise detection, which relates to the technical field of track traffic noise detection and comprises a square mounting frame. The two mounting plates are symmetrically arranged on the mounting frame, and the two mounting plates are connected with the mounting frame in a sliding and locking mode; two first limiting mechanisms; two clamping jaw parts; and two second limiting mechanisms. According to the utility model, firstly, the detected track is supported by the second limiting mechanism to ensure that the detected track is in a horizontal detection position, and then the detected track is limited and fixed by the first limiting mechanism and the clamping jaw part, so that the connection condition between the clamping jaw part and the detected track can be observed; whether the detected track is flat and qualified or not is preliminarily observed, and then levelness detection is conducted on the detected track through flatness detection equipment. The purpose of detecting the flatness of the surface of the track is achieved.

The invention discloses a fireproof partition system, method and device of a rail vehicle energy storage system and a medium, relates to the technical field of rail traffic, and provides the fireproof partition system of the rail vehicle energy storage system in order to solve the problem that an effective fireproof scheme is lacked in a space-first application scene of the rail vehicle energy storage system at present. Fireproof protection of the energy storage system is achieved through the air door arranged at the ventilation and heat dissipation air opening of the energy storage system, and the air door and the energy storage system hardly occupy extra space. And closing control over the air door is fused with an original fault processing mechanism of the train, additional control module arrangement is omitted, and occupied space is further reduced. Therefore, the system provides an effective protection scheme for the fire prevention problem of the rail vehicle energy storage system in a scene with extremely limited space. The energy storage system can be additionally arranged on the railway vehicle on the premise that the requirement of the railway traffic for the fireproof safety level is guaranteed.

The application provides a kind of steel rail turnout milling and grinding processing method based on vision, belongs to the field of track traffic maintenance intelligent equipment, comprising: obtaining the three-dimensional data of steel rail turnout;The three-dimensional data is fitted to generate two-dimensional turnout track diagram;The distance between the upper rail of frog heart and the lower rail of frog heart is l 1 Place vertical first boundary line, the distance between the connecting point of upper side switch rail and upper side wing rail l 2 Place vertical second boundary line, the distance between upper side general rail and upper side switch rail l 2 Place vertical third boundary line, according to the first to the sixth curve and the first to the third boundary line, determine the processable area and non-processable area of steel rail turnout;Control the milling and grinding car to process the processable area.This application can effectively improve the processing efficiency and processing precision, completely repair the disease site, and avoid damage to the steel rail turnout.

The invention discloses a switch rail tip chipping detection device and method, and relates to the technical field of switch rail detection of rail traffic, and the switch rail tip chipping detection device comprises a walking mechanism moving along the extension direction of a switch rail, a detection device suspended between the walking mechanism and the switch rail, and a signal processing module installed on the walking mechanism. The floating part automatically adapts to the contour of a rail head, the detection part senses pressure fluctuation in real time, block falling state data are obtained through threshold judgment of the signal processing module, and a brake parking structure is linked in case of serious defects, so that automatic continuous monitoring is realized; the problems that manual inspection efficiency is low, and missing detection and misjudgment are easily caused by environmental lighting limitation are effectively solved, and turnout operation safety and detection timeliness are greatly improved.

The application discloses a rigid contact net self-adaptive polishing control method and system, belongs to the technical field of track traffic power supply equipment maintenance, obtains the pantograph-catenary action historical data of each position along the busbar direction of the contact net, and constructs a contact wire damage index distribution curve; based on the damage index, a high damage interval is identified, roughness, corrugation amplitude and oxidation thickness parameters are extracted, a damage intensity vector is constructed, and a fuzzy comprehensive evaluation method is used to calculate the damage level score of each position; according to the scoring results, a preset polishing strategy library is matched, corresponding polishing wheel combinations, rotating speeds and contact pressures are determined, and a control parameter set is generated; the polishing device dynamically adjusts the working state according to the control parameters in the running process, and the method realizes the whole-process self-adaptive closed-loop control of state recognition, strategy decision, execution control and quality feedback of the contact wire polishing operation.

The invention discloses a track defect detection method based on task alignment and dynamic category weighting, and belongs to the technical field of track traffic operation and maintenance, and the method comprises the steps: carrying out the inspection of a railway or urban track through employing an unmanned aerial vehicle to carry high-definition camera equipment, and obtaining track image data; the collected images are preprocessed and divided into a training set, a verification set and a test set; in the training process of the YOLO target detection network, task alignment scoring is introduced in a positive sample distribution stage; according to the method, classification loss of unified scarcity-size joint weighting is designed, dynamically updated category weight is introduced, and meanwhile, the influence of category scarcity and target size on learning difficulty is described, so that the overall detection precision is improved; and reasoning a new track image acquired by the unmanned aerial vehicle by using the trained model, and outputting a detection result containing a defect category, a position and confidence.

The invention belongs to the field of urban rail transit emergency command, and particularly relates to an urban rail transit emergency command method based on digital twinning, which comprises the following steps: collecting multi-source data and setting an emergency trigger condition; deploying a lightweight self-adaptive adjustment twinborn model; according to the rail transit guidance method, the problem of how to estimate the flow direction of crowds and issue an evacuation strategy under the condition that a fire occurs in a scene of urban rail transit and a camera is shielded by smoke or powered off is solved; according to the invention, the method can achieve the estimation of the flow direction of the crowd under the condition of no sight line, and gives an evacuation command accordingly.

The present application relates to the technical field of urban rail transit floor cleaning and maintenance equipment control, and provides a kind of urban rail transit floor cleaning and maintenance equipment control method and system, by real-time acquisition of the load information of motor driving cleaning brush disc and frequency analysis is carried out, identify the load fluctuation characteristics related to the rotation frequency of cleaning brush disc;According to the amplitude and phase change of load fluctuation characteristics, determine that the bristles of cleaning brush disc are in non-uniform wear state, adaptively adjust the closed-loop control parameters of motor / overlap the compensation signal synchronous with the rotation angle of cleaning brush disc in the control command of motor;The motor is controlled by the adjusted closed-loop control parameters and / or control command of motor, so as to dynamically optimize the motor control according to the actual wear condition of bristles, so that the cleaning force applied to the ground by the cleaning brush disc remains uniform during the entire rotation process, significantly improving the cleaning quality.

The invention discloses a track board laying device and a track board laying method based on the BIM technology, and relates to the technical field of track traffic construction.The track board laying device is provided with a track transporting vehicle, a guide rail, a walking truss, a position adjusting mechanism and a track board clamping and laying mechanism; the track plate clamping and laying mechanism firstly slowly lowers the height to enable the lower surface of the track plate and the roadbed or ballast bed surface to be close to a preset gap; and then the adsorption force of the adsorption assembly is released, and the clamping assembly is gradually opened, so that the track plate is stably released and laid in place under the action of gravity. Through the process, the device can complete automatic transfer, accurate positioning and release laying of the track plate, and frequent manual adjustment operation during traditional manual matched hoisting is avoided.

The utility model relates to the technical field of rail traffic engineering, in particular to a comprehensive grounding structure of a city railway ballast bed, which comprises a longitudinal grounding steel bar, a transverse grounding steel bar and a comprehensive grounding steel bar mesh, the comprehensive grounding reinforcing mesh is embedded in the bottom of each roadbed slab, and the comprehensive grounding reinforcing meshes at intervals are communicated through grounding reinforcing steel bars every other roadbed slab; a plurality of roadbed slabs are used as a grounding unit at a certain distance, the grounding units are not communicated with one another, the roadbed slabs in one grounding unit are communicated with one another through connecting terminals, and the connecting terminals are connected with weak current side reserved terminals on the roadbed slabs. The utility model has the advantages that the rail structure height of the urban railway shield tunnel is reduced, the concrete consumption is reduced, the construction procedures are reduced, and the comprehensive grounding method is simplified; and the method has good economical efficiency.

The invention discloses a high-speed train intelligent automatic driving method based on train-ground cooperative environment perception, and relates to the technical field of rail transit automatic driving. The method comprises the following steps: using a vehicle-mounted perception unit and a ground perception unit to synchronously collect environment information and line related information of a preset range in front of a train; carrying out target detection and geometric parameter extraction on the environment information, and fusing multiple types of sensing results of a vehicle-mounted sensing unit to obtain a vehicle-mounted end target state vector; collaboratively fusing the target state vector of the vehicle-mounted end and the line related information, outputting a fused total-factor environment sensing result through a joint characterization method, transmitting the fused total-factor environment sensing result to an automatic driving system, and generating traction and braking control instructions to control the operation of a train; meanwhile, risk early warning and decision suggestions are pushed to a driver through a driver display interface, and train operation feedback data are received in real time to dynamically adjust a control instruction. Reliable data support can be provided for automatic driving control, and the safety and the intelligent level of train operation are guaranteed.

The invention provides a method and a system for quickly positioning railway intrusion personnel based on visual estimation, belongs to the technical field of target identification, applies an advanced monocular depth estimation and positioning method to rail transit, and solves the potential safety hazard of train operation caused by insufficient personnel intrusion position along the current railway. According to a pre-constructed target prior mapping relation between image pixel coordinates and actual geographic coordinates, after an invader is detected, the pixel coordinates of the invader are directly mapped to corresponding actual longitude and latitude positions; and if the target prior mapping information does not exist, calling a coordinate conversion algorithm according to the pixel coordinates to realize conversion from the pixel coordinates to latitude and longitude coordinates, realizing dynamic conversion from an image plane to a global geographic coordinate system, and obtaining actual latitude and longitude positioning of personnel invasion. According to the invention, high-precision positioning can be carried out on the invading personnel in the rail transit scene only by means of the monocular camera, so that the problem that personnel invasion is difficult to check in an existing system is solved, and the safe operation level of a railway is improved.

The invention relates to a low-damage secondary energy-gathered jet cutting device for a fiber composite material. Comprising a buffer protection cover, a linear cutter module, a shaped charge module and an explosive-proof body arranged between the linear cutter module and the shaped charge module. The shaped charge module consists of a plurality of micro shaped charge units which are linearly arranged, and is used for pre-puncturing a row of pre-guide holes to form a continuous stress concentration line and a crack propagation prefabricated path; and the linear cutter module is detonated in a delayed mode, and final cutting is completed along the prefabricated path. According to the method, the problems of material tearing, layering, rough cutting boundary and the like are solved through a pre-guiding-post-cutting cooperation mechanism by means of guiding of prefabricated stress concentration points and sequential control of subsequent cutting, the smoothness and quality of a cutting surface are improved, the fiber damage problem is reduced, and the production efficiency is improved. And the method has a wide application prospect in precise cutting of high-performance composite materials such as carbon fibers and Kevlar used in the fields of aerospace, rail transit, high-performance ships and the like.

The application discloses a track multi-source dynamic detection data mileage alignment method and device, and relates to the technical field of track transportation; wherein the method comprises the following steps: removing the broken chain of standard mileage data according to the standard mileage data of standard data, a sampling interval, a starting sampling point mileage and line broken chain account information, so as to obtain standard straight development mileage and broken chain position information; performing mileage integration reset on to-be-calibrated mileage data according to train running speed data, a sampling frequency of the to-be-calibrated data and the starting sampling point mileage, so as to obtain to-be-calibrated straight development mileage; configuring calibration parameters; calibrating the to-be-calibrated straight development mileage in sections according to the calibration parameters, first vehicle body acceleration data, second vehicle body acceleration data and the standard straight development mileage, so as to obtain calibration straight development mileage corresponding to the to-be-calibrated straight development mileage; performing broken chain correction on the calibration straight development mileage according to the broken chain position information, so as to obtain calibration mileage data after mileage alignment of the to-be-calibrated mileage data. The application can improve the accuracy of mileage alignment.

The invention discloses buffering energy-absorbing equipment for a rail vehicle, which belongs to the technical field of rail transit and comprises an energy-absorbing seat, a plurality of buffering columns are slidably connected to one end of the energy-absorbing seat, first energy-absorbing plates are fixedly connected to the ends, away from the energy-absorbing seat, of the buffering columns, and first buffering mechanisms are symmetrically arranged between the first energy-absorbing plates and the energy-absorbing seat. The first buffering mechanism comprises a first hinge seat fixedly connected with the first energy absorption plate, first hinge parts are symmetrically arranged on the first hinge seat and fixedly connected with the energy absorption seat, the end, away from the first energy absorption plate, of the energy absorption seat is fixedly connected with a second energy absorption plate through a second buffering mechanism, and the end, away from the energy absorption seat, of the second energy absorption plate is symmetrically and fixedly connected with mounting supports. A multi-stage buffer structure is adopted, collision energy is gradually dispersed, and the energy absorption efficiency and capacity are improved; and through the combination of the second buffering mechanism and the second energy absorption plate, the buffering capacity to large impact force is enhanced, and the core structure of the vehicle is protected.

The utility model relates to the technical field of rail traffic construction, in particular to a noise reduction and damage prevention device for short-distance horizontal transportation of steel rails, which comprises a fixing component, universal wheels are respectively arranged at the positions of fulcrums on the periphery of the bottom of the fixing component, and the universal wheels are detachably connected with the fixing component. The steel rail is fixed to the fixing assembly through a fastener, and steel rail end baffles are arranged at the two ends of the fixing assembly. The utility model has the advantages that the convenience and the safety of horizontal transportation of the steel rail are improved, and the construction efficiency is improved; the device is simple and reasonable in structure, convenient to use, reusable and suitable for popularization.

The application discloses a kind of thermoplastic continuous fiber reinforced unidirectional tape prepreg based on dry method pre-impregnation and preparation method thereof, it is related to continuous fiber reinforced thermoplastic composite material technical field.The method uses continuous fiber tows without weft fibers as raw material, and is directly put yarn and spread to form parallel arrangement unidirectional fiber tape, sequentially through first face powdering, heating melting pre-impregnation, cooling solidification, automatic turning, second face powdering, secondary melting pre-impregnation, cooling and flattening and winding process to obtain prepreg, and the winding process is simultaneously carried out online quality detection.The application breaks through the dependence of traditional dry method powdering process on pre-woven reinforcement, realizes the continuous automatic production of weft-free structure unidirectional tape, and the obtained prepreg has a fiber volume fraction of 20%~70%, uniform resin distribution, low porosity and excellent dimensional stability, and has the environmental protection advantages of solvent-free and low energy consumption, and can be widely applied in the fields of automobile, aerospace, rail transportation and the like.

A method for optimizing forming and performance of a friction stir welding head through pre-welding rolling belongs to the technical field of metal material welding processing, and comprises the following steps: before friction stir welding, a friction stir rolling welding tool is used for carrying out rolling treatment along a to-be-welded welding line path, so that a to-be-welded position is subjected to plastic deformation in advance; residual compressive stress and high-density lattice defects are introduced into the welded joint, so that residual tensile stress generated in formal welding can be effectively counteracted, residual deformation of the welded joint and the structure is reduced, and the mechanical property of the joint can be improved by promoting grain refinement of the weld joint and re-precipitation of a strengthening phase; therefore, synchronous optimization of forming and performance of the friction stir welding joint is realized. Compared with an existing welding method, the method is simple in process, high in repeatability, capable of achieving shape property common control of the large thin-wall welding structure and suitable for high-quality welding manufacturing in the fields of aerospace, rail transit, automobiles, ships and the like.