270 results about "Subway line" patented technology

The invention relates to the technical field of train wheel diameter correction and discloses an automatic train wheel diameter correcting method. The automatic train wheel diameter correcting method includes the steps of firstly, determining the initial values of wheel diameters; secondly, arranging transponders, selecting two adjacent transponders on a straight line to serve as the basis reference of wheel diameter correction, and measuring the actual distance between the two transponders; thirdly, by a train, obtaining the operation distance in set time according the measured speed, and obtaining the updated wheel diameter values according to the ratio of the operation distance to the measured actual distance and the initial values of the wheel diameters; fourthly, performing validity check on the updated wheel diameter values; fifthly, filtering bad values of the updated wheel diameter values. The method has the advantages that the standard transponder system of a subway line is used as the auxiliary equipment for train wheel diameter automatic correction, and automatic train wheel diameter correction is achieved while system speed measuring and positioning precision is increased.

The invention discloses a real-time monitoring method and an emergency treatment preview method of a subway station based on a three-dimensional structure. The monitoring method comprises the following steps: a three-dimensional structure monitoring model of the subway station is constructed by interconnecting with a rail transit BIM system responsible for subway line design, construction and operation and maintenance; The real-time running status of the subway station is obtained by defining the general interface and establishing the interconnected communication with the integrated monitoringsystem. According to the real-time running state of the subway station, the three-dimensional real-time scene of the subway station is output, and the three-dimensional real-time monitoring of the subway station is realized. The emergency treatment preview method comprises the following steps of: adopting the three-dimensional structure monitoring model of the subway station, previewing the firesituation and personnel escape and evacuation on the three-dimensional structure monitoring model of the subway station by using the integrated monitoring system operation control plan during the emergency treatment of the subway station. The invention can realize visual display of various emergency management information, comprehensive inquiry and analysis, and provide intuitive and efficient auxiliary decision-making function.

The invention discloses a box culvert advancing construction method for building a new frame bridge above an existing subway structure. The box culvert advancing construction method for building the new frame bridge above the existing subway structure includes: excavating a thrust pit in one side of a position above the existing subway structure, where the frame bridge is to be built; prefabricating a box culvert in the thrust pit, adding a balancer at the bottom of the interior of the box culvert, and guaranteeing that the sum of the weight of the balancer and the weight of the box culvert is equal to the weight of a soil mass which is excavated out; advancing the box culvert; after advancing the box culvert in place, simultaneously dismantling the balancer and constructing an accessory structure, guaranteeing that the weight of the dismantled balancer is equal to the weight of the constructed accessory structure, and then completing construction of the frame bridge. The box culvert advancing construction method for building the new frame bridge above the existing subway structure controls floating deformation of the existing subway structure through a box culvert advancing method achieved by adding the balancer during the process of constructing the new frame bridge above the existing subway structure, adopts the mode of adding the balancer during the box culvert advancing process, uses the weight of the balancer and the weight of the box culvert to make up the weight of the soil mass which is excavated out, and thereby prevents a soil body below the frame bridge from collapsing, controls deformation amount of the existing subway structure, reduces influences of construction on existing subway line running, and guarantees safe subway running.

The invention discloses a subway shield tunnel lining quality high-precision rapid vehicle detection method and apparatus. The detection apparatus comprises an image acquisition module, a ground-penetrating radar module, a multi-sensor fusion positioning module, a laser range-finding module and an industrial personal computer, the image acquisition module comprises a linear array CCD industrial camera and an LED light source, the ground-penetrating radar module comprises a ground-penetrating radar antenna and a ground-penetrating radar host, and the multi-sensor fusion positioning module comprises an inertia measuring apparatus and an encoder. The method and apparatus can be used for automation and normalization detection of the shield tunnel lining quality of existed subway lines, the power failure operation is avoided, a maintenance skylight is not occupied, normal operation of the subway is not influenced, the detection efficiency is substantially improved, the detection time of disease types and positions is greatly shortened, the damage to the tunnel lining can be eliminated in time, and the safety operation of the subway and the life and property safety of people are guaranteed.

The invention relates to the technical field of rail transit wireless communication and especially relates to a subway station-arriving reminding method based on a user mobile phone terminal. The method comprises the following steps: each station information of all subway lines in some area is stored to a subway route database of the user mobile phone terminal; a user determines a subway-taking route in a route selection module in the user mobile phone terminal according to the outgoing need, and determines a transfer station and a destination of the trip; and when a detection module detects that acceleration magnitude of a subway that the user takes during driving is smaller than 0, a route judgment module in the user mobile phone terminal judges that the current subway is in a slowdown pull-in state, and calls the station information of the station of the subway-taking route determined by the user in the route selection module to determine the whether the station is the transfer station or the destination determined by the user, and then, sends a station-arriving or transfer reminding message. The method can remind passengers to transfer or that the subway reaches a station conveniently, timely and effectively according to the subway-taking route selected by the user autonomously, and by utilizing the configuration of a mobile phone.

The invention relates to a train anticollision system on the basis of the sound wave communication and an anticollision method thereof, relates to the technical field of the rail transit and solves the technical problem of improving the safety of a train in a tunnel. The system comprises a plurality of anticollision communication units which are respectively arranged on each train; each anticollision communication unit consists of two sound wave communication subunits which are respectively arranged on a corresponding locomotive and a corresponding tail; each sound wave communication subunit comprises a sound wave transmitting device, a sound wave receiving device and signal control processing equipment; and a next train transmits a sound wave detection signal to a previous train, the previous train transmits a sound wave response signal after receiving the sound wave detection signal transmitted by the next train, and the next train calculates the distance between the next train and the previous train according to transceiving time difference between the sound wave detection signal and the sound wave response signal and then judges the collision risk of the train according to a calculating result after receiving the sound wave response signal transmitted by the previous train. The system and the method which are provided by the invention are particularly suitable to apply in the urban subway line.

The invention discloses a system for obtaining information of each station of a subway line. The system comprises a handheld terminal device, a station entry system, a station exit system and a control center. A method for obtaining the information of each station of the subway line comprises: a passenger carries out user registration on the handheld terminal device and a two-dimensional code is generated; when the passenger enters an entrance and leaves an exit, a starting point and an ending point for subway mileage charging of the passenger are marked at a control center through scanning the two-dimensional code, a passenger prepay order is generated through calculating the distance between position coordinates of the entrance and those of the exit, and the passenger pays a fee through a mobile payment module. When riding the subway, the passenger can hear voice broadcasting of a name of a station to be arrived at through the handheld terminal device. The passenger can pay directly through scanning the two-dimensional code without buying a ticket, the operation is simple and reduces the time for entering and exiting a station, and the flow speed of passengers is increased.

The invention discloses a subway passenger flow organization method based on major stop parking and multi-station synergistic flow-limiting. The method comprises the following steps: counting the passenger flow characteristic of each station on a subway line; setting a train stopping scheme of the subway line according to the passenger flow characteristic; constructing a space-time transfer model of the train and the passenger according to the passenger flow characteristic of each subway station and the train stopping scheme of the subway line; computing a weighted value of a line multi-station transportation system according to the space-time transfer model of the train and the passenger; dynamically adjusting a decision variable, optimizing integral weighted value of all passengers to obtain an optimal train stopping scheme and the corresponding flow-limiting scheme. Through the adoption of the technical scheme disclosed by the invention, the limitation of isolatedly and statically considering the passenger flow limiting in single station is overcome, the influence of the passenger flow change in each station to the adjacent station is considered, the stations and the line are regarded as an integer so that the passenger flow changes of the whole line is dynamically linked, the method has obvious improvement in comparison with the existing single-station flow-limiting scheme.

The invention discloses an early warning method and an early warning system of subway signal faults and relate to rail transit technical field. The early warning method comprises: S1: acquiring the operating state parameters of various devices of a current subway line in real time; and S2: determining whether the various devices of the subway line are normal according to the operating state parameters, and if not, generating alarm information and analyzing the same in order to generate fault information corresponding to a fault. The early warning method and the early warning system acquire the operating state parameters of various devices of the current subway line and perform determination according to the operating state parameters so as to achieve automatic fault detection and increase fault determining efficiency, and may inquire a processing prepared plan database in order to obtain a processing prepared plan corresponding to the fault information, thereby increasing fault determining speed. The early warning system may immediately publish urban rail transit signal fault information and trip references to Internet such that passengers may automatically obtain the fault information and transfer suggestion with a mobile terminal connected with Internet.

On one hand, the invention discloses an urban rail transit passenger path planning method based on a graph theory. The method comprises the following steps that: S1: obtaining the station track information of a subway and a night bus to independently construct a subway and night bus bidirectional weighted road network graph; S2: according to passenger riding time, considering a last subway and thenight bus, and planning the optimal travel path of the passenger; and S3: predicting the real-time passenger flow of a subway line, and providing optimal planning service for the passenger accordingto the GPS (Global Positioning System) positioning of the passenger. On the other hand, the invention simultaneously discloses an urban rail transit passenger path planning system based on the graph theory. By use of the method and the system, walking time for passenger transfer is shortened, a scheme of the path planning of a last subway time period and the connection of the subway and the nightbus is provided, the travel efficiency of the passenger is improved, the travel way of the passenger is enriched, meanwhile, a path planning and navigation function is provided for passengers, passenger flow information is detected and published in real time, and convenience is brought to an emergency situation.

The invention discloses a comprehensive judgment method for buried gas metal pipeline corrosion caused by stray current nearby subway lines. The method comprises steps as follows: 1, arrangement and analysis of background and general situation: technological parameters, past operation conditions and the like of a pipeline are known; 2, inspection and test analysis: after a faulted pipeline with abnormal leakage is sampled, the sample is subjected to check analysis with various devices and multiple physical and chemical test means; 3, comprehensive discussion, analysis and judgment: an acting form of the stray current on pipeline corrosion morphology is judged, a mutual relation between failure mechanisms is discussed, a failure reason is found out and a solution is given. By means of comprehensive analysis for corrosion failure, caused by the stray current nearby the subway lines, of the buried gas metal pipeline, new stray current corrosion morphology feature reference and failure mechanism theoretical support are provided, the failure reason of the pipeline can be accurately judged, and an effective solution is proposed. The method has great reference significance and practical application value for failure analysis of various oil and gas transmission pipelines and pipelines with different diameters, model and textures in different environments.

The invention discloses a subway train operation service quality detection apparatus and a method thereof. The apparatus comprises a detection unit, a detection host and a processing unit, wherein the detection unit includes an inertial measurement module and the detection unit is used for collecting a train body operation attitude parameter, a noise in a carriage, a temperature, humidity, air quality and a mobile phone signal intensity; the detection host is connected to the detection unit in a communication connection mode and is used for acquiring data collected by the detection unit; and the processing unit is connected to the detection host in the communication connection mode, and is used for receiving and storing data transmitted by the detection host, calculating a position parameter of a subway line where the detection apparatus is located according to the data, carrying out single index and integration index evaluation on subway train operation service quality, and carrying out data contrast analysis, data trend analysis, space position analysis, line equipment association analysis and subway line track disease analysis. In the invention, space positioning precision of subway train operation service quality analysis evaluation and objectivity of an analysis result are increased, and a convenient technology means is provided for subway train service quality management and monitoring.

The invention discloses a subway station position selection method and system based on space big data; the method comprises the following steps: determining a city area in which a subway line is to be built, and gridding the city area so as to form a candidate subway station position set; optimizing the candidate subway station position set according to preset restrictive conditions so as to determine a feasible subway station position set, wherein the subway station position set comprises the start point and end point of the subway line; building a multi-target subway station position selection model according to the preset constrained conditions; optimizing the subway station positions in the feasible subway station position set according to the subway station position selection model, thus determining the subway station selected positions. The method and system consider various factors like city economy, social, traffic and policies, can extract colony travel activities from multi-source space-time locus data so as to build the multi-target subway station position selection model, and can use the built multi-target subway station position selection model to select subway station positions with high efficiency and quality.

The invention discloses a subway emergency management system which comprises an emergency monitoring and managing module, an early warning module and an emergency treating module. The emergency monitoring and managing module is used for acquiring the subway operation status information and the alarm information which are sent by a subway line monitoring device and an alarm device; the early warning module is used for setting the security values of the subway lines, comparing the acquired subway operation status information with the security values of the subway lines and sending an early warning to managing terminal in every place when the acquired subway operation status information exceeds the security values of the subway lines; and the emergency treating module is pre-stored with an emergency state treatment plan, connected with a command terminal and used for providing opinions for the command terminal according to the emergency state treatment plan and providing emergency instructions for an emergency state site according to the emergency instructions of the command terminal. Due to the cooperative work of the emergency monitoring and managing module, the early warning module and the emergency treating module, the capacity of handling emergencies in the subway is greatly improved.

The invention discloses a subway scene positioning method and a subway scene positioning device based on a communication base station. The method comprises the steps: collecting base station signal data in a subway station and along a subway in advance, carrying out the recognition of the base station signal data according to a preset rule, and storing the base station signal data in a base station database; receiving a base station scanning request initiated by a user, scanning surrounding base stations and forming a base station sequence; and matching the scanned base station sequence with an identified base station in a base station database, and outputting a positioning result. According to the embodiment of the invention, the subway station and the communication base stations deployedaround the subway line are used for positioning, the signal coverage is large, the interference signals are few, the positioning accuracy is high, and the stability and accuracy of subway scene positioning are effectively improved.

The invention relates to a method for carrying out active passenger information acquisition and service by using an intelligent mobile phone. According to the method, a passenger uses carried handheld mobile terminal equipment, a terminal application which provides subway passenger crowding information and a central processing system used for mass data storage and mining. Through an application installed in the intelligent mobile phone, the geographic position information data of passengers and the equipment identification code of the mobile phone are actively obtained, the data and the equipment identification code are transmitted to the central processing system through a data transmission network, the central processing system carries out position matching on the geographic data of the passengers combined with the geographic information of a subway line network, and thus the travel paths of the passengers and station passenger flow parameters are obtained. According to the system and the method of the invention, the walking paths of the passengers in the subway network, the passenger number at subway stations and between subway stations and transfer passenger number can be subjected to statistics, and abundant basic data support and platform support can be provided for passenger travel service and passenger flow organization by the obtained parameter data.

The invention discloses a subway arrival prompting method and system based on the android platform. The system comprises a subway line recommendation module, a subway arrival prompting module and a subway line real-time updating module, wherein the subway line recommendation module is used for listing all tripping lines which are arranged according to the lengths of the lines for a user after the user selects a starting point and a terminal point; the subway arrival prompting module is used for providing arrival or transfer prompting information for the user; and the subway line real-time updating module is used for downloading a subway route map for the user and updating subway routes in real time. Through implementation of the method and the system, citizens can be prevented conveniently from wasting time due to the fact that the citizens miss the stops.

The invention discloses a subway train energy-saving optimization method based on an improved genetic algorithm, and the method comprises the steps of firstly, building a train energy consumption model according to the conservation of energy consumption, setting the constraint conditions, and solving a train energy-saving operation strategy through the improved genetic algorithm, wherein the operation strategy is concretely solved by the two stages of at the first stage, taking the speed, acceleration, time and the like of each working condition of a train as genes, combining the genes into achromosome, namely a solution, solving the speed and distance of a conversion point of each working condition, and determining an optimal operation curve; and at the second stage, solving the maximumoverlapping time of multi-train operation traction and braking, determining the regeneration energy utilization rate, and obtaining the optimal operation departure strategy of the train. The method isbased on the complex lines and conforms to the actual operation condition of the train, the adopted solving method is fast in speed, high in precision and complementary in length, the global searching capacity and the local searching capacity are fully utilized, and the total operation energy consumption of the subway train is effectively reduced with the Nanning subway line 1 as an example verification.

The invention relates to a subway train autonomous positioning device, system and method based on multivariate information fusion, belongs to the technical field of railways, and solves the problem that an existing train positioning system depends on trackside equipment. The device comprises inertial navigation equipment used for carrying out autonomous navigation positioning on a subway train andcalculating inertial navigation positioning information; visual equipment used for monitoring an image beacon arranged at a fixed position beside a subway line track and calculating visual positioning information; and data processing equipment used for receiving the reported information of the inertial navigation equipment and the visual equipment, carrying out information fusion to obtain fusedpositioning information, sending the fused positioning information to an ATP system of the subway train, and carrying out auxiliary control on each stage including train leaving, inter-station operation, train pull-in station/garage and train stop-in station/storage. Common-cause failure caused by positioning equipment with the same principle and characteristics is avoided, and the amplification problem in the positioning precision transmission process and the influence of failure of subordinate equipment on the positioning precision of superior equipment are prevented.

The invention discloses a control method for a one-way conduction device with an arc extinction function, and relates to the field of stray current prevention in a subway system. An intelligent controller receives an in-position signal generated when a detected train passes through an insulation junction, acquires voltage signals at the two ends of the insulation junction, and triggers a high-power electronic switch to reversely conduct the insulation junction when voltage is higher than a set value, so that the arc of the insulation junction is prevented; and the intelligent controller in the one-way conduction device acquires the working state of each part circuit in the one-way conduction device, sends the data to an integrated automation center through a field bus, monitors the working state of the one-way conduction device in real time, can remotely control the one-way conduction device, and uploads the working state parameters of the one-way conduction device to a microcomputer management system through Ethernet, so that the one-way conduction device in the whole subway line is monitored on line. The one-way conduction device has the advantages that the device reliably works, has a simple structure, is high in real-time property and can be widely applied to a subway stray current corrosion prevention system.

The invention relates to a water-rich sandy cobble ground heteromorphosis deep shaft structural system and a construction method thereof. A conventional rectangular shaft section pattern or a circular shaft section pattern, influenced by established subway lines and surrounding environments, can be limited by site conditions and the surrounding environments, so that an operating space does not exist. The water-rich sandy cobble ground allotypical deep shaft structure comprises a heteromorphosis deep shaft structure, wherein the heteromorphosis deep shaft structure comprises a triangular fracture surface shaft structure, an extended digging section heteromorphosis shaft structure and a quadrilateral fracture shaft structure which are arranged from top to bottom; the horizontal section of the triangular fracture surface shaft structure is triangular, and the horizontal section of the upper part of the triangular fracture surface shaft structure is the same as that of the lower part of the triangular fracture surface shaft structure; the horizontal section of the quadrilateral fracture shaft structure is quadrilateral, and the horizontal section of the upper part of the quadrilateral fracture surface shaft structure is the same as that of the lower part of the quadrilateral fracture surface shaft structure; the triangular fracture surface shaft structure is expanded to form the quadrilateral fracture shaft structure through the transition of the extended digging section allotype shaft structure. The water-rich sandy cobble ground allotypical deep shaft structural system disclosed by the invention has the characteristics of being small in occupied area, large in inner space, flexible to convert and capable of being adapted to various environmental requirements, the requirements for small upper part and large lower part are met, and besides, the surrounding environments can be adapted.

The invention relates to the field of overhead contact system image processing and provides an adaptive learning overhead contact system rigid conductor identification method and device for the defectexisting in the prior art. The method or the device can be widely applied to metro line overhead contact system rigid conductor identification in different environments and different lines. Geometrical parameter measurement is finished stably and efficiently. According to the method and the device, an overhead contact system rigid conductor positioning identification method is carried out on images which are collected by linear array cameras and comprise an overhead contact system, thereby obtaining overhead contact system rigid conductor curve information; the overhead contact system rigid conductor curve information is processed based on a gray projection statistical method, thereby obtaining a conductor gray projection curve; conductor gray projection curve information is input into aconductor space distribution model, and the optimum conductor model is obtained according to the Euclidean distance optimum solution; identification is carried out according to the optimum conductor model, thereby obtaining the optimum conductor contour location information; and calculation is carried out based on a binocular vision fundamental principle, thereby obtaining overhead contact systemrigid conductor geometrical parameters.

The invention belongs to the technical field of urban rail transit, and relates to a congested subway line passenger flow coordination control method based on a space-time network. According to the method, train space-time tracks, dynamic requirements of all OD passengers, the train loading capacity, passenger path selection, the waiting time and the like under a set running chart are comprehensively considered, on the premise that an existing running chart is not affected, passenger travel is optimized, safe and efficient operation of rail transit is guaranteed, the passenger waiting time isshortened, and rail transit resources are balanced. Specifically, through a time discretization method, on the premise of determining a running chart, a train running space-time network is constructed, a passenger flow control problem is converted into a passenger travel time selection problem, and a mathematical optimization model for accurately describing the problem is established. Furthermore,the model is converted into a travel shortest path selection problem based on individual passengers by means of a Lagrange relaxation method, an algorithm for solving the problem is designed, and a rail transit line collaborative current limiting strategy under a given running chart is efficiently solved.

The invention provides a method and a system for prompting subway arrival information based on a tablet personal computer. The method includes the steps of receiving user ride line information which is confirmed by a user according to subway ride line information; judging whether the user is in a subway line or not; obtaining the arrival information in the subway line based on wireless fidelity (WIFI) if the user is judged to be in the subway line; judging whether the arrival information is terminal point arrival information or not , and broadcasting the arrival information if the arrival information is the terminal point arrival information; further judging whether the arrival information is transferring arrival information if the arrival information is judged to be middle arrival information, broadcasting the transferring arrival information if the arrival information is the transferring arrival information, and if not, informing the user of the arrival information through a prompting message. The method and the system for prompting the subway arrival information based on the tablet personal computer very conveniently prevents citizens from missing a station, and thus from wasting time.