301 results about "Railway system" patented technology

A simulation system of a railway system for a Medium-Voltage Direct Current (MVDC) distribution network includes: a computing device which stores a simulation program including a converter station model configured to simulate a converter station included in the MVDC distribution network and a train operation model configured to simulate an operation state of a train that is supplied with power from the converter station and runs; a converter controller which controls a DC / DC converter included in the converter station model; and a Hardware In the Loop Simulation (HILS) device which performs a simulation based on the converter station model, the train operation model, and the converter controller. Herein, the converter station model and the train operation model are executed in software by the HILS device, and the converter controller is connected to the HILS device and driven to control the converter station model.

The invention relates to the technical field of railway fault traceability, in particular to a railway fault traceability method and system based on a weighted path sorting algorithm, and the method comprises the steps: constructing a traceability knowledge graph according to historical fault data, equipment operation data and maintenance records of a railway system; and then a weighted path sorting algorithm is carried out on the traceability knowledge graph by combining a Bayesian network model, a random walk algorithm and an attention mechanism model, so that efficient and accurate railway safety fault traceability is realized, the safety and reliability of railway transportation are remarkably improved, and the method has a wide application prospect and a remarkable practical value.

The embodiment of the invention discloses a high-speed railway trackside space electromagnetic environment recording and simulating method and device. A high-speed railway system comprises a field acquisition test subsystem and a signal reconstruction test subsystem. Comprising the following steps: collecting field electromagnetic field intensity data externally generated by an electromagnetic interference source of the high-speed railway system through the field collecting and testing subsystem; obtaining related design parameters of the high-speed railway system and external area parameters of the simulation position; reconstructing the field electromagnetic field intensity data, the design parameters and the external area parameters through the signal reconstruction test subsystem to obtain a field electromagnetic interference field intensity signal; and inputting the field electromagnetic interference field intensity signal to the electromagnetic sensitive equipment to enable the electromagnetic sensitive equipment to perform operation simulation so as to obtain whether the electromagnetic sensitive equipment operates normally based on the field electromagnetic interference field intensity signal.

The invention provides a railway equipment fault report analysis method and device, and the method comprises the steps: collecting fault report data of railway equipment, and carrying out the data cleaning and preprocessing; a pre-trained BERT model is used for processing a text sequence of the fault report, the BERT model adopts a 12-layer encoder in a Transform architecture as a basic component, context information is extracted from a front text and a back text, a word vector in each sentence is generated, and named entity recognition is carried out; establishing a railway fault knowledge graph according to the identified named entities; and displaying the constructed railway equipment fault knowledge graph through visual representation, performing statistical analysis on fault data in combination with a visual form, and revealing distribution and trend of faults. The method can provide a scientific basis and a favorable tool for maintenance and fault prevention of the railway equipment, effectively improves the efficiency and accuracy of fault analysis of the railway equipment, and improves the safety and operation efficiency of a railway system.

A service vehicle moves on a rail system including a first set of parallel rails arranged in a horizontal plane and extending in a first direction and a second set of parallel rails arranged in the horizontal plane and extending in a second direction which is orthogonal to the first direction. The first and second sets of rails form a grid pattern in the horizontal plane including a plurality of adjacent grid cells. The service vehicle includes a container handling vehicle part for storing a container handling vehicle operating on the rail system, and wheels for allowing movement of the service vehicle along the rail system during operation. The service vehicle further includes a displacement mechanism, and a hoist arrangement connected to the displacement mechanism. The displacement mechanism and the hoist arrangement are configured for moving the container handling vehicle between an operational position on the rail system and a loaded position within the container handling vehicle part.

A service vehicle moves on a rail system of an automated storage and retrieval system. The service vehicle includes a container handling vehicle part for storing a container handling vehicle operating on the rail system, and wheels for allowing movement of the service vehicle along the rail system during operation. The service vehicle further includes a displacement mechanism, and a hoist arrangement connected to the displacement mechanism. The displacement mechanism and the hoist arrangement are configured for moving the container handling vehicle between an operational position on the rail system and a loaded position within the container handling vehicle part.

The invention provides an asynchronous federal learning system and method for a turnout switch machine fault diagnosis model. The system comprises the following steps: acquiring mechanical vibration signals at three positions of a speed reducer shell, a contact seat and an actuating rod of a switch machine by using a mechanical vibration sensor; information fusion of the vibration signals of the three point locations is carried out; a lightweight dual-scale neural network model; an asynchronous federated learning process resistant to time delay and packet loss; and an asynchronous federated learning system structure. An asynchronous federal learning process resistant to time delay and packet loss is adopted, communication delay and the remaining receiving time of single uploading of an edge computing unit are fully utilized, and the extra computing time for fusion after all units are uploaded is shortened; the asynchronous federated learning system structure clarifies the hierarchical relationship and specification of federated learning of point switch fault diagnosis in a railway system. Distributed training of the switch machine fault diagnosis model is realized, and reliable guarantee is provided for railway transportation safety.

The invention belongs to but is not limited to the technical field of wireless communication, and discloses an edge computing enabled air-ground network service deployment and resource allocation method and system, which is characterized in that application programs are strategically deployed and replaced on a UAV (Unmanned Aerial Vehicle), computing resources and power are reasonably allocated, and on the premise that the task execution efficiency and accuracy are ensured, the resource allocation efficiency is improved. The task execution success rate of the IoT equipment in the intelligent railway system is maximized; the mobile edge computing is introduced into the air-space-ground integrated network, the characteristics of flexible deployment and small transmission delay of the UAV in the air-based network are utilized, and the complexity and dynamism of a traffic system are effectively dealt with and the resource allocation and power control are optimized through collaborative optimization of task placement, cache replacement, a resource allocation strategy and the transmission power of IoT (Internet of Things) equipment. According to the method, a deep reinforcement learning framework is adopted, and an algorithm based on a multi-agent depth deterministic strategy gradient is provided to realize joint optimization of task placement, cache replacement, resource allocation and IoT equipment transmission power.

The invention discloses a train fault state detection method and system based on artificial intelligence, and relates to the technical field of train fault state detection. The method comprises the steps that multiple types of sensors are arranged at key parts of a train, state data such as temperature, vibration, electricity, energy consumption and noise are collected in real time, local receiving, preprocessing and wireless uploading of the data are achieved by means of a mobile terminal, and a cloud platform conducts multi-dimensional analysis and fault recognition through an artificial intelligence algorithm on the basis of a health assessment model. According to the train fault diagnosis system and method, health indexes and early warning information are generated and pushed to operation and maintenance personnel in real time, the system supports overhaul process recording and multimedia information uploading, information archiving and analysis tracing are achieved, the accuracy and response efficiency of train fault diagnosis are remarkably improved, the operation and maintenance cost is reduced, and the safety and intelligent level of a railway system are enhanced.

The invention relates to the technical field of rail transit, in particular to a heavy haul railway group simulation system, method and device and a medium. The method comprises the following steps: deploying a plurality of sensors on site to collect train, track or signal data in real time, and cleaning and fusing the collected data to obtain preprocessed data; based on the preprocessed data, constructing digital twin models of the heavy haul railway system by adopting a three-dimensional modeling technology, and establishing an association relationship and an interaction mechanism between the digital twin models; performing real-time calculation and simulation on the digital twin model through numerical calculation and dynamic simulation; displaying the digital twin model by adopting an interactive interface of a virtual reality (VR), augmented reality (AR) technology or a naked eye 3D technology, and performing interactive operation with the digital twin model through the interactive interface; and comparing and analyzing a simulation result with actual operation data, verifying the accuracy and reliability of the digital twinborn model by calculating errors, and adjusting and optimizing the model according to a verification result.

The invention relates to the technical field of rail bridge post-earthquake traffic, in particular to a method, medium and equipment for calculating post-earthquake response and traffic capacity of a rail bridge system. The method comprises the following steps: establishing a nonlinear simulation model of a high-speed railway system; the post-earthquake track residual irregularity is calculated, a post-earthquake track residual irregularity characteristic curve is constructed, and fast calculation of post-earthquake response is achieved; establishing a wheel-rail power system nonlinear mapping model based on the convolutional neural network; and performing Monte Carlo simulation on the track residual irregularity quantitative index, inputting the track residual irregularity quantitative index into a wheel-rail power system nonlinear mapping model, and calculating a train power response index to obtain the post-earthquake traffic capacity of the train. A reasonable calculation model is established according to the structural characteristics of the track system, and the time and economic cost is reduced; post-earthquake dynamic response is calculated through a wheel-rail power system nonlinear mapping model, the relation between post-earthquake track residual deformation and train dynamic response is established, and the post-earthquake traffic capacity of the track bridge system under different safety levels is obtained.

The invention discloses special detection equipment for a railway DRTD system, which can effectively realize the detection of the railway DRTD system, can collect detection data, fills the blank of the detection equipment for the railway DRTD system, improves the data level of the railway DRTD system, supports the operation and maintenance of the railway DRTD system, and specifically, aims at the communication process of the railway DRTD system on the basis of the performance and bearing service characteristics of the railway DRTD system. According to the method, a characteristic air interface command is captured, a DRTD performance detection (wireless access performance and mobility performance), voice call service and data transmission service detection data acquisition scheme is provided, railway DRTD system performance and service detection data acquisition is realized, and a large amount of reference data can be provided for a railway DRTD system.

The invention relates to a compact railway energy regulation and control complex which comprises a converter unit with an intermediate frequency transformer as a core, and an alternating current port of each converter unit is connected with buses of alpha and beta phase traction feeder lines on the secondary side of a V / v traction transformer in series. A magnetic field hedging decoupling inductor and a filter capacitor of the medium-frequency transformer form a secondary harmonic filter branch on the direct current side of each converter unit, non-negligible secondary harmonic components on the direct current side of each converter unit in the single-phase converter system are filtered out, and a power winding of the medium-frequency transformer is connected with a DC / DC converter on the inner side of each converter unit. The compact railway energy regulation and control complex can accurately control the tidal current distribution of the two power supply arms, carries out comprehensive energy regulation and control through a direct current port and an external energy storage and new energy power generation system, can effectively inhibit the voltage fluctuation of a feeder line side, improves the comprehensive energy utilization rate and the new energy consumption rate of an electric railway system, and improves the energy utilization rate of the electric railway system. Compensating the power factor of the high-voltage side of the transformer substation and inhibiting the voltage unbalance degree of the PCC point.

System, method, and computer program product for determining a route for a container handling vehicle operating on a rail system of an automatic grid-based storage and retrieval system. The method comprising creating a model of the rail system representing the rail system as a finite set of non-overlapping rectangular first zones in a first direction, and a finite set of non-overlapping rectangular second zones in a second direction, wherein the zones are positioned around grid positions that are not accessible by the container handling vehicle, determining overlap information indicative of one or more regions of the rail system in which there is an overlap between a zone of the finite set of first zones and a zone of the finite set of second zones, determining grid position zone information by, for each grid position determining in which of the finite set of first zones and / or the finite set of second zones the grid position is located, receiving a request for a route for at least one container handling vehicle from a first grid position to a second grid position; and determining the route using the model of the rail system.

It is described a container transport vehicle (501′; 501″; 501′″; 501″″,501′″) for operation on a rail system (108) of an automated storage and retrieval system (1), the container transport Y vehicle (501′,501″,501′″; 501″″; 501′″) comprising:—a vehicle body (501a′; 501a″; 501a′″; 501a″″; 501a′″″) defining a vehicle base (501d), four sides (501e), and an upper face (501f′; 501f″) opposite the vehicle base (501d);—a first drive means (501b) for movement of the container transport vehicle (501′,501″; 501′″,501″″; 501′″″) in a first direction (X);—a second drive means (501c) for movement of the container transport vehicle (501′; 501″,501′″; 501″″;501′″″) in a second direction (Y), wherein the second direction (Y) is perpendicular to the first direction (X);—an internal receiving space (20) within the vehicle body (501a′; 501a″;501a′″;501a″″; 501a′″″);—an elevator assembly (10) comprising a first support surface (11) being vertically movable and configured to support a storage container (106);—wherein the vehicle base (501d ) comprises a base opening (502), and at least one of the sides 501b (501e) comprises a side opening (503), the side opening (503) allowing passage of a storage container (106) into the internal receiving space (20) and the base opening (502) allowing the elevator assembly (10) to lower a storage container (106) at least partly therethrough. It is further described an associated system comprising the container transport vehicle and methods of using the container transport vehicle to transfer storage containers between different locations on a rail system.

The invention provides a data association analysis method and system based on weight improved Apriori, and the method comprises the steps: collecting original railway accident data, screening and numbering the information of railway accident causes, accident types and accident levels, and generating a multi-attribute railway accident data set; calculating the weight of the accident data based on an entropy method; and according to the weight of the accident data calculated based on an entropy method, setting improved support and confidence indexes, and mining association rules in the railway accident data. According to the method, the weight of each accident grade is calculated through an entropy method, the Apriori algorithm is improved, a new support degree and confidence index algorithm is designed, more strong association rules containing accident cause information are obtained, weighted association rule mining of railway accident data is achieved, the accident severity degree is considered when the accident data are processed, and the probability of accident occurrence is lowered. The effectiveness of accident data mining is improved, the efficiency and accuracy of accident and fault analysis and prevention are improved, and the traffic safety of a railway system is effectively guaranteed.

The invention provides a ground resistance testing method and device suitable for a railway system, and the method comprises the steps: determining a first inter-electrode voltage value between a tested ground grid and a first potential electrode based on a first testing loop and excitation current provided for the first testing loop, and determining a second inter-electrode voltage value between a tested ground grid and a second potential electrode based on a second testing loop; and determining a second inter-electrode voltage value between the tested ground grid and the second potential electrode according to the first inter-electrode voltage value provided for the first test loop and the excitation current provided for the second test loop, and determining the grounding resistance of the tested ground grid and the soil resistivity of the tested ground grid based on a predetermined correction factor, the excitation current value, the first inter-electrode voltage value and the second inter-electrode voltage value. The compensation resistance is counteracted by adding the test electrode and introducing the correction factor, so that the test method of the grounding resistance is simplified. And the zero potential region does not need to be repeatedly measured and searched, so that errors caused by manually searching the zero potential region are avoided, and the accuracy of the grounding resistance test is improved.

The invention discloses a railway perimeter security and protection system and method based on machine vision and a sound wave expelling device, and relates to the technical field of railway security and protection, and the system comprises a monitoring module, a target recognition module, a decision module and an expelling module; wherein the monitoring module is used for acquiring a key video frame containing an intrusion target in a to-be-monitored area of a railway system; the target identification module is used for carrying out target identification on the intrusion target in the video frame based on an acoustic dispersion detection model, and determining the type of the intrusion target, the distance of the intrusion target, the moving speed and the existence time; the decision module is used for matching a target sound wave sample from a preset sound source database; and the expelling module is used for emitting corresponding expelling sound waves to the invasion target based on the target sound wave sample. According to the invention, the technical problem that an existing security technology lacks an active intervention means for an emergent event and cannot prevent and intervene the event when the event occurs is solved.

The invention discloses a train multi-mode wireless access terminal and a multi-path data transmission scheduling method. The train multi-mode wireless access terminal integrates multi-system communication modules such as LTE-M, Wi-Fi, 5G, GSM-R and the like, configures various priorities for data through the main control unit, allocates default and standby bearer networks, and dynamically monitors network connection quality parameters to judge transmissibility, trigger switching logic and regulate and control QoS (Quality of Service) levels. The multi-path data transmission scheduling method comprises the steps of configuring a data priority and a network, monitoring a network state, executing transmission control based on the priority, and switching back to transmission after a default network is recovered. According to the invention, the problems of complex deployment, low flexibility and low reliability of a wireless communication module of an existing rail transit vehicle are effectively solved, and high-reliability and flexible data transmission and interconnection and intercommunication with a railway system in a multi-network environment are realized.

The invention relates to the technical field of railway traffic flow calculation, and particularly discloses a railway real-time traffic flow calculation method and equipment. The method comprises the following steps of S1, constructing a railway transportation database, S2, fusing and preprocessing acquired data, S3, determining a running path of a train, S4, constructing a train running aging coefficient model, S5, constructing a boundary train handover efficiency coefficient model, S6, calculating a railway traffic flow according to the coefficient model, and S7, calculating the railway traffic flow according to the coefficient model. Step S8, carrying out application feedback on the traffic flow calculation result; according to the method, the real-time calculation of the railway traffic flow is realized by constructing the multi-dimensional time analysis model, the traffic flow calculation result is corrected and adjusted, and the prediction accuracy and reliability are improved, so that the train dispatching and resource allocation are optimized, and the operation efficiency and emergency response capability of a railway system are improved.

The invention discloses a dynamic locking column edge positioning method and system for visual ranging of a switch machine, and the system comprises an indication rod and a locking column, the indication rod is provided with an opening, one end of the locking column vertically extends into the opening, the indication rod can move in the horizontal direction, the locking column can move in the vertical direction, and the indication rod can move in the vertical direction. A camera is arranged behind the opening, and videos representing movement of the rod and the locking column are collected through the camera. Preprocessing each frame of image of the video to obtain contours representing the rods and the locking columns; traversing pixel points in the motion range of the expression rod on each frame of image to obtain pixel positions of the edge of the expression rod and the edge of the locking column; according to the invention, the distance between the indication rod and the locking column in turnout switching can be accurately measured under various environmental conditions, so that stable operation of a railway system is ensured; and the safety and the efficiency of a railway system are remarkably improved under the dark light condition.

The invention provides a railway emergency power supply cooperative control method and system based on signal linkage, and relates to the field of railway electric braking systems.The method comprises the steps that 1, electrical parameters and power supply state data of station connection cables between adjacent stations are obtained on the basis of optoelectronic isolation signal acquisition units distributed in station machine rooms along a railway, the data are transmitted to the monitoring host in real time through the main-standby dual-path transmission architecture; and step 2, the monitoring host performs dynamic topological relation analysis based on the transmitted data in combination with a preset fault feature library, generates a space structure framework representing a fault influence range, and judges a fault category in combination with a station connection circuit control rule to generate a fault judgment result. Signal linkage and cooperative operation between railway emergency power supplies are achieved, power supply reliability and emergency response speed are improved, and stable operation of a railway system is guaranteed.

Disclosed is a firearm accessory with a clamping mechanism used to removably attach the firearm accessory to a rail system, such as a Picatinny rail. The clamping mechanism includes a pair of parallel engagement members and a reversibly extendable recoil lug, which is disposed within a guide groove in the firearm accessory. Additionally, the clamping mechanism includes a threaded fastener that is operatively connected to the recoil lug and is used to advance the recoil lug from, and retract the recoil lug into, the guide groove.

A locomotive has DC or AC traction motors, powered by a hydrogen fuel cell, and optionally other sources such as regenerative braking. The traction motors of the locomotive may be connected to a set of independent DC choppers or AC inverters, linked via a common DC bus, configured to regulate power from the one or more power sources. A manager module, among other functions, may receive inputs and signals to coordinate delivery of electricity from the sources to the motor. A method for retrofitting a legacy locomotive may include removing a generator and a control apparatus configured for diesel fuel, and installing a kit of apparatus configured to be powered by a hydrogen fuel cell. A railway system for use by locomotives powered by hydrogen has one or more hydrogen-generation stations deployed near a track of the railway system.

The invention discloses a checking system for outdoor signal cable wiring of a railway system and a working method thereof, and the checking system comprises a signal centralized monitoring module which is used for obtaining indoor and outdoor signal equipment information and storing the corresponding information in a database; the view module comprises a three-dimensional scene module and a visualization module, the three-dimensional scene module comprises a three-dimensional scene model composed of indoor and outdoor signal equipment, and the three-dimensional scene model is provided with a user interaction interface so that outdoor cables needing to be checked can be selected; the data analysis module is used for analyzing and integrating the selected outdoor cables and acquiring related wiring relation information from a database; and the view module can receive the information related to the selected outdoor cable acquired by the data analysis module from the database, and draw and display the trend of the outdoor cable and a connection information graph of the outdoor cable penetrating through the interior and the exterior of the outdoor cable in the visualization module based on the information. The system has the advantage that the system is beneficial for maintenance personnel to quickly position, check and pertinently analyze faults.

The present invention discloses a method and system for testing the quality of data transmission service of a railway DRTD system, which are corresponding solutions. In the solution, the validity and timeliness of data transmission of main network element nodes EMBC in the railway DRTD system can be tested, and at the same time, a method is provided for testing and verifying dispatching communication data services that are mainly carried by packet data of the railway DRTD system. The method and system can be widely used in railway DRTD system performance evaluation, daily debugging, system joint debugging and testing, and maintenance inspection, which are in line with the actual application requirements and scenarios of the railway DRTD system, do not affect the normal business processes of the railway DRTD system, are highly targeted, and can provide new methods and technical means for railway DRTD system operation and maintenance testing to ensure driving safety.

The invention relates to a method for the automated or assisted control of a rail vehicle (5), in which dynamic route data (9), such as routes, speeds and / or signal aspects, are generated for the rail vehicle (5) in at least one interlocking system, in which static route data (9) are stored in at least one track database (4), and in which at least one on-board ATO (Automated Train Control) unit (7) controls the rail vehicle (5) or assists in its control, taking into account the dynamic and static route data (9, 16). To offer an alternative for existing systems without ETCS train protection, the invention provides that the dynamic and static route data (9, 16) are acquired and processed by a trackside ATO server unit (8) and transmitted to the on-board ATO unit (7).The invention also relates to an ATO server facility (8), an ATO system (6) and a railway technical system (1).

The invention relates to the field of railway track traffic, in particular to an electrified traction backflow proportion testing system and method. Comprising a power supply system and a backflow comprehensive control system which are connected, the backflow comprehensive control system comprises a control module, a backflow current monitoring module and a backflow state display module, and the backflow current monitoring module and the backflow state display module are respectively connected with the control module; the power supply system comprises a current source module and a current source control module which are connected. According to the electrified railway system backflow proportion testing system, accurate testing of the grounding grid backflow proportion of a traction substation of a newly-built railway can be achieved, the system can accurately monitor and record the grounding grid backflow proportion in real time, powerful guarantee is provided for safety and stability of railway engineering, and through the system, the system can be used for testing the grounding grid backflow proportion of the traction substation of the newly-built railway. The actual operation state of the traction backflow system can be known, and potential problems can be found and solved in time, so that long-term stable operation of a railway system is ensured.

A method for monitoring the integrity of a railway system (2) comprises the steps of: acquiring measurement signals from multiple strain sensors (21) on a track rail (6) of the railway system (2); determining the integrity of at least one component (5, 6, 7, 9) of the railway system (2) based on the measurement signals, wherein the multiple strain sensors (21) are components of a linear detection device (19) attached to the track rail (6) and extend over a measuring section (31) along the track rail (6) with a length (L) of at least 100 m; and wherein the integrity is determined by means of an electronic evaluation unit (20) which is in signal communication with the multiple strain sensors (21), in particular at least 100 of the strain sensors (21), for receiving the measurement signals. A monitoring device (1) for monitoring the integrity of the railway system (2).

The invention provides a monitoring method and device for a railway system. The method comprises the following steps: acquiring sensor data and a real-time monitoring video in the railway system; based on the sensor data and the real-time monitoring video, extracting a key event from the real-time monitoring video; extracting a real video sub-image of a main object corresponding to the key event from the real-time monitoring video; objects and / or areas except the main body object in the real video sub-image are / is set as backgrounds; modeling the background based on a building information model technology to obtain a virtualized virtual background; and synthesizing the real video subimage in the virtual background to obtain a target monitoring video, and displaying the target monitoring video. Therefore, the main object involved in the key event can be highlighted, so that monitoring personnel can quickly identify key information from the target monitoring video.