83 results about "Metro system" patented technology

The invention claims a computer interlock system and method for controlling urban rail transit signals thereof, which relate to urban rail transit signal control field. The computer interlock system disclosed in the invention at least comprises an interlock control unit and an input and output unit, wherein the interlock control unit carries out a double two out of two interlock logical operation of according to state information of each signal device when receives an interlock operating command, and determines the state information of the signal device to be controlled by the interlock operating command according to the result of the interlock logical operation and outputs to the input and output unit; the input and output unit outputs driving information for controlling the signal device to reach the determined state to the signal device to be controlled by the interlock operating command. The example in the application can guarantee a subway system to operate safely and reliably; and the embodiment in the application is not only suitable for moving block, but also suitable for quasi moving block and fixed block, and is high in flexibility.

The invention discloses a subway passenger travel path identification method based on mobile phone locating information. Signaling data produced by passive location of the mobile phones are used, mobile phone signaling data of the subway passengers in a subway system are analyzed, so that passenger travel rules can be studied, and accurate identification of the passenger travel paths can be realized. The subway passenger travel path identification method includes filtering data; matching the base station databases with subway stations; inspecting integrity of starting points and terminal points of travel in the subway; and inspecting reasonability of subway transfer sites and correcting the paths. The subway passenger travel path identification method is practical and effective.

The invention discloses a full-automatic driving simplifying method and system for track traffic. The system comprises a center-level integrated dispatching and automation control center, a station-level integrated dispatching and automation control sub-center, a wireless management distributed control system (DCS), a database storage unit (DSU), an object controller (OC) and a vehicle on board controller (VOBC). According to the invention, under the condition of meeting the functions of a traditional full-automatic driving subway system, ground devices are simplified, a ground ATP, interlocking devices and the like are canceled, a train autonomously computes the movement authority according to an operation plan, line resource conditions and a self-operation state, and thus autonomous safe operation control of the train on lines can be ensured; on the basis of ensuring front and rear safe distances of the train, two adjacent moving block regions can simultaneously advance at a very small interval, so that the train can operate at an allowed maximum speed and smaller interval, and the operation efficiency can be improved; and the construction cost and maintenance cost can be lowered, intermediate links can be reduced, properties can be improved, the complexity can be reduced, and the reliability can be improved.

The invention discloses a method for calculating stray current and neutral point direct current of transformer caused by stray current in a metro. The method comprises the following steps: 1. The structure of rail-drain network-earth in metro system is equivalent to a three-layer resistance network model, and the resistance network is divided into several sections equally; 2, that flow path of theDC bias magnetic field of the transformer caused by stray current is analyzed, and a current branch of the DC bias magnetic field of the transformer caused by stray current is added into the resistance network model; 3, KVL equations along respective loop are arranged to obtain loop current equations for that built resistance network model; 4, a loop current equation is resolved by using the LU decomposition method, and the stray current of the rail leakage and the neutral point current of the transformer is calculated. This method can be used to calculate the distribution curves of neutral current and stray current of transformer under subway operation, which provides a theoretical basis for evaluating the influence of stray current on DC magnetic bias of transformer.

The invention discloses a subway station passenger flow micro statistics and scheduling method. The method comprises the following steps of building a model of the total number of people entering and leaving an automatic fare collection entrance in the time period T, and making a scheduling strategy according to the model; building a dynamic moving model of escalators and pedestrian stairs, and making a scheduling strategy according to the model; and building an in-station-hall dynamic subway waiting people number model, and making a scheduling strategy according to the model. The method has the advantages that the intuitive performance is good; the implementation is simple; and the intentionality is definite, and the like. By the method provided by the invention, the number of people in station entering ticket check-in gate and a station leaving ticket check-in gate in a subway system, the number of people in passages and stairs, and the number of subway waiting people in different station halls in each time period can be predicted; easy-to-be-crowded regions such as station entering and leaving ticket check-in gates, stairs and platforms are subjected to maximum passenger flow threshold value analysis and prediction distribution, so that the passenger flow rule is provided for the relative traffic study; and the data analysis and support is provided for the infrastructure building.

The invention provides a metro crew working scheduling method based on the hybrid genetic algorithm. The method includes: dynamically dividing working diagram data into daily task crew shifting cards according to train working diagram data and restrain conditions and performance requirements of working of crew working drivers in metro operation. The metro crew working scheduling method has the advantages of distributing operation tasks through a metro system, generating reasonable task sequences, ensuring reasonable alternation of off days and working tasks of crew members and avoiding messy manual task division.

The invention discloses a subway system and a method for improving transport capacity of the subway system. The subway system comprises a rail, a plurality of subway stations and a subway train. The subway stations are divided into odd-number stations and even-number stations, and the odd-number stations and the even-number stations have different identifications. The total length of the subway train is larger than the length of a platform of each subway station, the subway train is composed of a first set of carriages, a second set of carriages and a third set of carriages in a sequentially-connected mode, each set of the carriages comprises a plurality of carriages, and the first set of the carriages and the third set of the carriages are arranged at two ends of the subway train respectively. When the subway train gets to an odd-number station, the first set of the carriages and the second set of the carriages are arranged in the platform, and the third set of the carriages is arranged outside the platform. When the subway rain gets to an even-number station, the second set of the carriages and the third set of the carriages are arranged in the platform, and the first set of the carriages is arranged outside the platform. Due to the fact that the mode that part of carriages are alternately arranged outside the platform when the subway train gets in a station is adopted, the transport capacity of subways is greatly improved.

The invention relates to a subway train operation adjusting method and system under a late condition. The method comprises the steps of acquiring basic parameters in a subway system, late informationof the current moment and online operation train information of the current moment; according to the basic parameters, the late information of the current moment and the online operation train information of the current moment, determining the stopping position of the sent train and the running strategy of the train which is not sent; determining the operation state of the operating train at the next moment according to the stopping position of the sent train, the running strategy of the non-sent train, the basic parameters, the late information of the current moment and the online operation train information of the current moment; and optimally configuring available underbody resources of the subway system according to the operation state of the operating train at the next moment and theoperation data. According to the invention, automatic adjustment of the operation chart can be realized according to the late information, the underbody operation plan is reasonably changed, the influence of train late on passenger travel is reduced, and the actual operation chart cashing rate is improved.

The invention discloses a super subway system. The limit constraint of the platform length on train marshalling is broken through changing the train stop mode, compared with the traditional subway system, the construction investment per unit volume is lower, a new line which is twice as large as the traditional subway transport capacity is built, and furthermore, the system is compatible and friendly with a traditional subway system. The existing line with insufficient transport capacity can be upgraded and improved by more than 80% at the lowest transformation cost, and a train energy-savingtechnology and a subway energy-saving technology covered in the system and a theoretical method created by a super subway system for subway planning, design, construction and operation cover a rail transit full-industry chain including train manufacturing.

The invention discloses a method and a device thereof for switching double-layer multicast links, which are applied in a subway system of a track side access device, a vehicle-mounted access device and a vehicle-mounted client. The method comprises the following steps of: when switching the active links between the vehicle-mounted access device and the track side access device, acting for the vehicle-mounted client by the vehicle-mounted access device to send a multicast adding message to the track side access device connected to the current active link through the current active link; and maintaining the radio port of the current active link as a double layer multicast router port. By adopting the invention, the timely switching of the multicast forwarding link can be ensured in the process of switching double layer multicast link of the subway system, thereby the continuity of the multicast stream is ensured.

The present invention is directed to a MIMO equalization system and method, optimized for baud rate clock recovery in coherent symbol-spaced DP-QPSK Metro systems. According to this method, the Mueller & Muller timing function is extended to cope with controlled ISI induced signals, while decoupling between MIMO equalization and clock recovery loops, using a midpoint output of the equalizer for timing estimation, instead of its final output. At least a portion of controlled Inter-Symbol Interference (ISI) is kept intact and the controlled ISI is compensated by an MLSE, right after carrier timing synchronization.

The invention relates to the field of contact network rigid-lead-wire measurement subway systems in urban rail transit, and provides a machine vision-based contact network lead-wire wear measurement method and device for the problems existing in the prior art. Wear measurement is realized through using basic methods of image processing and machine vision. In a captured image containing lead wires,L1, L2 and L3 are segmented from a rest background in the image through image processing threshold processing and communicated-region characteristic analysis, lead-wire boundary locations E1 and E2 are utilized to determine a lead wire L2, and a wear value d can be obtained simply by measuring L2 width. Further, if only a partial region of the lead wire is discontinuous in the image due to complicated subway lines, and a wear value d of each position of the lead wire L2 cannot be accurately calculated, lead wire tracking, image refinement and the like are used to obtain an exact position of the lead wire, and thus the lead wire wear value d is calculated and measured.

The invention relates to the field of contact network rigid-lead-wire measurement of subway systems in urban rail transit, and particularly to a contact network lead-wire wear measurement method and device based on multi-channel cameras. In a solution, the n-channel cameras correspondingly collect n contact network lead-wire images of bottoms of contact network lead-wires in different pull-out value interval ranges; p maximum communicated lead-wire areas including L1, L2 and L3, p boundary positions E1 and p boundary positions E2 are correspondingly separated from the n contact network lead-wire images; p threshold images T(x, y) are obtained on the basis of threshold processing of the n maximum communicated lead-wire areas; the p threshold images T(x, y) are respectively and correspondingly combined with the p boundary positions E1 and the p boundary positions E2 according to the characteristics of the communicated areas to obtain p pieces of position information of L1, L2, and L3; same-contact-network lead-wire position information is fused for obtaining position information of optimum L1, L2 and L3; and position information of optimum L2 is utilized for calculating lead-wire wear values d.

The invention relates to the field of measurement of a rigid conductor of an overhead contact system of a subway system in urban mass transit, in particular to a method and a device for measuring abrasion of an overhead contact system conductor. According to the scheme, the method comprises the following steps of determining the number n of cameras according to the range of pull-out values of contact lines; correspondingly collecting n overhead contact system conductor images comprising overhead contact system conductor bottoms by n paths of cameras, wherein n is larger than or equal to 1; correspondingly segmenting n maximum conductor connected regions comprising L1, L2 and L3, n boundary positions E1 and n boundary positions E2 from the n overhead contact system conductor images; obtaining n thresholding images T(x, y) based on thresholding processing of the n maximum conductor connected regions; respectively correspondingly combining the n thresholding images T(x, y) with n boundarypositions E1 and n boundary positions E2 according to the characteristics of the connected regions in order to obtain n pieces of position information of L1, L2 and L3; and computing a conductor abrasion value d by utilizing the positioning information of the conductor L2.

The invention provides a subway ticket evasion preventing system based on an ultrasonic sensor and a design method of the subway ticket evasion preventing system. The system, on the basis of not changing existing equipment, is added with the ultrasonic sensor; pedestrian intervals and the number of pedestrians in an entrance channel are judged by acquiring distance data; with help of a card swiping number counter, the system can judge a ticket evasion phenomenon and open or close a gate. Through the ultrasonic sensor and a single chip program processing system, the system disclosed by the invention can automatically detect the ticket evasion phenomenon, overcome shortcomings of the existing equipment and transmit an alarm signal, therefore the accuracy and the intelligence degree of entrance automatic ticket checking are enhanced; the system disclosed by the invention saves human, physical and financial resources, prevents common occurring of the ticket evasion phenomenon and avoids unnecessary mistakes in a manual supervision process; through the ultrasonic sensor, the system solves the difficulty of manually supervising ticket evasion, and has advantages of being simple, efficient and accurate; the system well realizes electronization, intelligence and automation of a subway system, and can be commonly popularized on the basis of an existing subway system.

The invention relates to an assistant train safety driving decision system under malfunction of a metro control system. The assistant train safety driving decision system comprises trackside beacons, vehicle-mounted equipments and a mobile type intelligent terminal, wherein the trackside beacons are mounted on a track according to a set distance and are used for transmitting beacon information and ID information; the vehicle-mounted equipments are mounted in the heads at both ends of a metro train respectively and used for reading the beacon position and the ID information and transmitting the beacon position and the information to the mobile type intelligent terminal in a wireless manner; the mobile type intelligent terminal communicates with the vehicle-mounted equipment in a wireless manner to position and display a position where the metro train is placed, then receives and displays position information of a neighboring train, and decides and displays a train speed under a condition that the metro system fails. The assistant train safety driving decision system makes a rail train run safely under a condition of losing the protection of a signal system.

The invention discloses a cadmium-nickel battery management system which comprises a signal acquisition unit, a communication unit, a data storage unit and a management control unit; the signal acquisition unit is used for acquiring and storing the total voltage, monomer voltage, current and battery temperature of a cadmium-nickel battery; the communication unit is connected with a train network to upload battery data, download data during maintenance of the battery management system, and update programs; the data storage unit is used for storing key operation data of the battery management system and historical operation data of the battery management system; and the management control unit is used for carrying out abnormity detection and early warning on the storage battery pack, realizing charging and discharging control and SOC calculation, sending corresponding instructions to the signal acquisition unit, the communication unit and the data storage unit, and receiving informationfed back by each unit at the same time. The cadmium-nickel battery management system can solve the problems that a traditional cadmium-nickel battery has no data processing capacity and cannot be managed due to the fact that the traditional cadmium-nickel battery is directly in butt joint with a subway system.

The invention relates to a city subway alarm centralized processing method. The city subway alarm centralized processing method comprises the following steps: screening out abnormal data from data information transmitted by a subway system; according to the abnormal data, screening out information corresponding to the abnormal data from the stored alarm model, wherein the information comprises analarm objet type, an alarm object and alarm attribute; and building alarm information according to the information corresponding to the abnormal data and transmitting the alarm information, wherein one group of articles are stored in the alarm model, each article comprises one alarm object type, each alarm object type comprises at least one alarm object and each alarm object comprises at least onealarm attribute. The dispersed alarm data information of each subsystem is uniformly processed to serve as basis for subway control and decision, the consistency of an alarm station and alarm centerdata is improved and the problem of the centralized alarm system is effectively solved, so that the operation stability of a subway comprehensive monitoring system is improved.

The invention provides an airport passenger shortcut system simulation environment construction method based on virtual reality. The method comprises the following steps: a three-dimensional model multi-node seamless coupling step, which is used for reproducing an airport passenger metro environment in a virtual simulation environment; a spatial position associated model feature description step for establishing and expanding a train operation simulation scene based on an airport passenger metro environment; a multi-mode train operation control step for establishing a motion relationship of atrain model in the train operation simulation scene and simulating an operation situation of the train on a real line; and a dynamic line-of-sight scene slice imaging step, which is used for realizingadaptive optimization configuration of display resources. According to the invention, the airport passenger metro environment can be reproduced, the train operation scene can be built and expanded, the operation situation of the train on a real line can be simulated, the adaptive optimization configuration of display resources can be realized, and a simulation test environment can be provided forthe train organization, line planning and large-scale passenger flow characteristic analysis of an airport passenger metro system.

A computer-implemented method is presented for inferring passenger routes in a subway system. The method includes identifying, via an imaging device, a target passenger within the subway system, employing an exiting flow extractor to determine passenger exiting waves, employing an exiting wave identifier to mark an exiting wave of the passenger exiting waves including the target passenger, employing a supporting evidence backtracer to determine an entrance gate for each of the passengers in the marked exiting wave including the target passenger, determining a route probability for each of the passengers in the marked exiting wave including the target passenger via voting or distribution estimation processing, and employing a most probable route inferer to infer a route of the target passenger based on an aggregate route probability for all the passengers in the marked exiting wave.

The invention relates to a subway running adjusting method and system under the condition that a train exits from main track operation. The method comprises the steps: obtaining basic parameters of a subway system when the train breaks down, information of the train exiting from the main track operation, and information of a train normally operating on track, and determining the subsequent train number of the train exiting from the main track operation and a current train operation time table; according to predicted main track operation exiting moment of the train exiting from the main track operation, adjusting the current train operation time table to obtain the train operation time table after preliminary adjustment; determining the carriage for cancelling the planned train number and executing the uncancelled planned train number; and adjusting the train operation time table after preliminary adjustment according to the planned train operation time table of which the planned train number is cancelled. According to the invention, automatic adjustment of driving can be realized according to the information that the train exits from the main track operation, and the train number time table and the carriage turnover plan are reasonably changed, so that the influence of the train exiting from the main track operation on passengers is reduced, and the automation degree of a subway system is improved to adapt to fine management.

The invention discloses a method, device and equipment for processing faults of a subway system, and a storage medium. The method comprises the steps of receiving fault information of a subway systemfault, wherein the fault information comprises a fault phenomenon, an equipment type and a professional type; determining a solution of a subway system fault according to the fault phenomenon and theequipment type; and sending the solution and the fault information to a first maintainer, so that the first maintainer maintains the subway system fault, and the professional type of the first maintainer conforms to the professional type of the fault information. The beneficial effects that the solution is issued to maintenance personnel while dispatching is carried out, the maintenance personnelare helped to maintain faults of the subway system, and the maintenance efficiency is improved are achieved.

The invention discloses a segmenting method for a subway contact net lead in a CDEGS lightning model. The segmenting method is characterized in that a least value N of the number of contact net lead segments is calculated through a model, namely N=(m+1)*(2int[(25a-183) / 366]+3), wherein m is the number of span, a is the average span, and int[] is an integral function. The segmenting method aims at a subway system at a viaduct segment. An HIFRIQ module of CDEGS software is used for modeling the power supply mode of the subway contact net at the viaduct segment. The invention provides a conductor segmenting method for calculating an insulator withstand voltage of the subway line at the viaduct segment based on a CDEGS simulation model, wherein a requirement for high calculation precision is satisfied and calculating efficiency is improved.

The invention provides a method for predicting and evaluating the impact influence of the passenger flow after a large-scale activity on a subway station. The method comprises the steps of establishing and solving an optimal travel behavior decision model of individual passengers from a large activity venue to a destination point at the end moment of a large activity based on an evacuation trafficnetwork, and obtaining an alternative travel scheme set of the individual passengers; constructing and solving a large-scale activity scattered individual passenger discrete travel decision-making model by utilizing a random utility theory based on the alternative travel scheme set to obtain the probability that the passengers select each alternative scheme; and calculating the total evacuated passenger flow volume borne by each urban rail transit station after the large-scale activity is finished. According to the method, the convenience of multi-mode traffic such as walking, shared bicycles, connection buses and taxies around a large activity venue is comprehensively considered, the optimal travel decision model and the discrete selection behavior model of scattered crowds are established, and the method has important significance for advanced response and effective organization of a subway system in the period of a large activity.

The invention discloses a device and method for testing a traction controller of a subway system, and the device comprises a control generation system. The control generation system comprises a PLC control cabinet, and the interior of the PLC control cabinet is provided with a PLC control module, an industrial control computer module, a network interface module, and a serial port communication interface module. The industrial control computer module is disposed in a cuboid-shaped box body, and the cuboid-shaped box body is made of aluminium alloy. The top wall of the cuboid-shaped box body and the bottom wall of the cuboid-shaped box body are respectively welded with a cuboid-shaped top plate and a cuboid-shaped bottom plate. A manual operation control cabinet is connected to a supporting seat body fixed on the ground, and a structure where the manual operation control cabinet is connected with the supporting seat body is that the manual operation control cabinet is fixedly connected to the supporting seat body. The manual operation control cabinet is shaped like a cuboid. The supporting seat body is shaped like a cuboid. The above combination method effectively irons out the defects in the prior art that a PLC control cabinet does not have the function of avoiding electric shock caused by lightning and flame resisting, is not simple in configuration and is not convenient to install.

The invention discloses a distributed cooperative absorption method for urban rail transit braking energy. Braking energy utilization devices of adjacent stations are triggered to be put into operation by controlling the absorption voltage of a traction substation braking energy utilization device, so that the regenerative braking peak power of a train which enters a station can be jointly absorbed by the energy utilization devices of the multiple adjacent stations, the power impact on a single station is reduced, better utilization of the regenerative braking energy in a subway system is facilitated, and the probability of transmitting electric energy back to an urban power grid is reduced.

The invention provides a subway safety risk and emergency capability assessment method and device based on scene construction, and relates to the technical field of subway risk assessment. The method comprises the steps: performing clustering analysis on historical data of subway accident cases, and dividing subway accidents according to different places in combination with a scene construction theory to obtain a plurality of risk areas and risk scenes; scoring each risk scene through an improved LEC risk evaluation method, and determining a risk level of each risk scene; acquiring an emergency capability evaluation index of each risk scene, and acquiring a score corresponding to each index; based on a fuzzy comprehensive evaluation method, determining an emergency capability evaluation score of the risk scene according to the score corresponding to each index; and according to the emergency capability assessment score of each risk scene, determining the emergency capability level of each risk scene so as to complete subway risk emergency capability assessment. According to the method, the overall emergency capability of the urban subway system can be improved.

The invention belongs to the technical field of urban rail transit control, and relates to a subway network train timetable rapid compiling method comprising the following steps: S1, setting basic parameters of a target subway network; S2, setting ranges of running time, station dwell time, departure interval and travel time of each line interval; collecting real data, and setting transfer walking time between the transfer station platforms; S3, collecting passenger flow information of the subway network; S4, performing compiling by adopting a generalized Benders decomposition algorithm; and S5, obtaining a collaborative optimization train timetable of the large-scale subway network and train connection conditions between the lines. According to the method, the generalized Benders decomposition algorithm is adopted to decompose the original problem into the sub-problems and the main problem which are easier to solve, the method has good solving efficiency, the waiting time of passengers can be shortened to the maximum extent, and the transfer efficiency and the service level of a subway system are improved.

The invention relates to a subway passenger-oriented friend recommendation method. The method comprises the steps of obtaining source data of subway station passengers and subway operation; preprocessing the acquired source data; inferring a passenger travel path according to the preprocessed source data; calculating a detailed train operation time table according to the subway train time table and the train departure interval; matching the passenger with the specific train according to the inferred passenger travel path and the calculated train operation time table; and extracting and measuring the interaction condition between the passengers according to the matched passengers and the specific train, and carrying out friend recommendation. The invention also relates to a subway passenger-oriented friend recommendation system. According to the invention, original social software friend recommendation based on user attributes or static space is expanded into dynamic space, so that matching between passengers and trains is more accurate, and interaction conditions of the passengers in the subway system can be comprehensively quantified.