246 results about "Signalling system" patented technology

The embodiment of the invention provides an urban rail signal system fault diagnosis method based on a knowledge graph and a large model, and the method comprises the steps: collecting system operation logs, state parameters and fault information in real time, and carrying out the data preprocessing and standardization; based on historical fault data, a fault classification and prediction model is constructed through feature extraction and mode recognition, and automatic fault recognition and risk early warning are achieved; constructing a fault diagnosis knowledge graph, and establishing an association relationship among entities such as equipment, faults, reasons, maintenance schemes and the like; a pre-training large language model and a LoRA technology are adopted for efficient fine tuning, a fault diagnosis reasoning model is trained, and end-to-end generation from fault description to diagnosis and maintenance suggestions is achieved; the knowledge graph and large model output are fused, real-time and historical data are combined, multi-path fault analysis and comprehensive diagnosis are carried out, and a diagnosis report is generated and displayed. The intelligent level, accuracy and efficiency of fault diagnosis can be improved, and technical support is provided for intelligent operation and maintenance management.

The invention discloses a railway LEU-transponder transmission system lightning stroke fault risk assessment method, and the method comprises the steps: determining a lightning current invasion path through building a lightning stroke transient electromagnetic disturbance calculation model of an electromagnetic sensitive equipment port, and calculating the voltage and current at the port when incoming waves invade. And building an electromagnetic sensitivity test experiment platform of the railway signal system based on the lightning current invasion path and the voltage and current at the port. And performing label category prediction on the to-be-predicted sample point through each support vector machine model in the target model set, and voting each prediction result. According to the invention, a complex transmission relation between lightning transient electromagnetic disturbance and equipment failure risk is established through deep learning. The fault risk of the signal system under the lightning transient electromagnetic disturbance action is predicted through transient electromagnetic effect experimental data of real equipment of the railway signal system, and powerful support is provided for improving the electromagnetic sensitivity of the signal system and guaranteeing stable operation of a railway.

The invention discloses a simulation method of a full-system coupled railway traction power supply system, which comprises the following steps: taking a traction power supply system and a train group as integrated simulation objects, and respectively constructing traction power supply network models including equivalent models of traction transformer, traction network, AT station and public power grid parameters; a multi-train operation simulator is constructed, and the multi-train operation simulator comprises various parameters such as trains, lines, signal systems, operation organizations and the like. Traversing all on-line trains through a multi-train operation simulator, substituting the on-line trains into a traction power supply network model, and dynamically calculating operation parameters and traction loads of a train group, including calculating locomotive initial current according to train initialization voltage, solving a traction power supply network node voltage equation and updating locomotive terminal voltage; and correcting the traction and braking characteristics of the train based on the updated locomotive terminal voltage. The method overcomes the defects of a traditional calculation method using a traction power supply system as an isolated network, reveals the dynamic state of train operation and the distribution characteristics of the traction network, and finally can obtain various parameters of each train.

The invention relates to the technical field of rail transit automatic driving, and particularly discloses a rail transit train automatic driving control method, which is characterized in that a vehicle-mounted control center cooperates with a signal system, a traction unit and a braking system, and centimeter-level real-time positioning is realized by adopting extended Kalman filtering and fusing satellite positioning, an odometer and trackside beacon data; the parking precision of the platform is controlled based on a graded braking strategy (coasting-common-precise braking) and pulse type terminal point fine adjustment; the method dynamically adapts to line condition changes in combination with feedforward-feedback composite speed control, and establishes a multi-level safety monitoring network (obstacle detection / overspeed protection / vehicle door linkage) to realize full-process closed-loop control, and finally, high-precision, high-safety and high-coordination operation under unmanned driving is achieved.

The present invention relates to the technical field of rail transit signaling systems, and in particular to a train control system, method and apparatus for heterogeneous verification of movement authority (MA). The system comprises: a ground-based temporary speed restriction server configured to send, to an onboard device of a target train, location information of all trains within a section corresponding to the target train; a ground-based radio block center configured to: calculate MA on the basis of the location information of the target train and location information of a train preceding the target train; and send the MA and identification information of the preceding train to the onboard device of the target train; and the onboard device configured to verify and correct the MA on the basis of the identification information of the preceding train and the location information of all the trains. In the present application, a heterogeneous MA calculation and verification mechanism is adopted, thereby reducing the risk of errors due to MA calculation by a single device.

Provided in the present invention are a rail transit train control method and apparatus. The method comprises: when the communication of a train is interrupted, acquiring a train movement direction, axle counting information, turnout information and a planned travelling destination, wherein the planned travelling destination is determined on the basis of passenger flow information corresponding to the next station of the train and a control instruction of an ATS center; determining train positioning information on the basis of at least one of the axle counting information and the turnout information, and the train movement direction; and determining a target authority on the basis of a plurality of device states between the train positioning information and the planned travelling destination, so as to control an operation level mode of the train, wherein the plurality of device states comprise a section state, a signal machine state, a staff protection key switch (SPKS) button state of a signal system, a screen door state, an emergency button state and a flood gate state. The method in the present invention can improve the automatic operation efficiency and operation safety of a train, thereby shortening the rescue time of an FAO system in case of a fault, and having high usability.

The invention provides an implementation method and device for a multi-opening-direction turnout control function, and relates to the technical field of rail transit signal control, and the method comprises the steps that an equivalent logic model is configured, and an N-opening-direction physical turnout is equivalent to a cascade structure composed of N-1 two-opening-direction virtual turnouts through the equivalent logic model; collecting physical position representation information of the N-direction physical turnout; based on a preset position state mapping rule, mapping the physical position representation information into a combined position state of all two-opening virtual turnouts in the equivalent logic model; transmitting physical location representation information or a combined location state based on the type of the data receiving end; wherein N is an integer greater than 2. According to the method, the equivalent logic model from the N-opening-direction physical turnout to the N-1 two-opening-direction virtual turnouts is established, strict state mapping and differentiated interface output strategies are combined, and safe and flexible control over the multi-opening-direction turnout under an existing signal system architecture is successfully achieved.

The invention relates to a rail transit speed sensor test and inspection method and system. The method comprises the following steps: acquiring a to-be-tested speed sensor; the input end of the speed sensor is connected to a signal system, the output end of the speed sensor is connected to sensor test verification equipment, and the signal system is used for providing an input control signal for the speed sensor; the sensor test verification device is used for providing rotating speed for the speed sensor, receiving output electrical performance parameters of the speed sensor and supplying power to the speed sensor. And determining input parameters of the signal system and the sensor testing and checking equipment, driving the speed sensor to operate, and checking the performance of the speed sensor according to the received output electrical performance parameters. Compared with the prior art, the system can simulate the running state and the test scene of a vehicle wheel set, and has indoor and outdoor test capabilities and a comprehensive troubleshooting function.

The invention provides a backup signal system and a train operation control method, and the system comprises a grating vibration sensor which is used for collecting a vibration signal generated when a train passes; the grating axle counting equipment is used for detecting position information and speed information of the whole train based on the vibration signal; the interlocking equipment is used for sending the signal machine state information and the position information and the speed information of the front train to the backup vehicle-mounted processing equipment when the train is degraded due to the fault reason; the backup vehicle-mounted processing equipment is used for calculating the position of a train safety protection point according to the signal machine state information and the position information and the speed information of the front train; and generating a safety speed protection curve based on the position of the train safety protection point and the route road condition information in a preset electronic map. According to the backup signal system based on the grating axle counting, accurate positioning of the train is achieved, a safety speed protection curve is generated, train tracking safety and speed curve supervision protection are achieved, and running safety and efficiency of the whole train are guaranteed.

The invention discloses an automatic security vulnerability detection method and system for rail transit signal system equipment, and the method comprises the steps: carrying out the unpacking and analysis of firmware of to-be-detected rail transit signal system equipment, so as to recognize a target file in the firmware; performing security attribute verification on the target file based on a preset rail transit security attribute rule base, including performing state consistency verification on a plurality of associated parameters in the control logic to identify security vulnerabilities caused by state conflicts; performing time sequence attribute verification on the time sequence sensitive security operation to identify security vulnerabilities caused by violation of the real-time constraint; and performing risk assessment and outputting a vulnerability detection result based on a security attribute verification result. Compared with the prior art, the method has the advantages that the formal rail transit safety attribute rule base is constructed, state consistency verification and time sequence attribute verification are carried out on the control logic in the equipment firmware at the same time, and automatic mining and risk assessment of deep business logic vulnerabilities are achieved.

The invention discloses an electromagnetic compatibility detection method and device of a rail transit signal system and electronic equipment, and relates to the technical field of electromagnetic safety. Determining an actual electromagnetic compatibility area corresponding to the equipment according to the actual distance between the actual installation positions of the multiple pieces of equipment of the rail transit signal system and a target reference line on a rail; and determining the electromagnetic interference risk condition between the relation pairs based on the electromagnetic interference information of the actual electromagnetic compatibility area corresponding to the equipment. According to the method, the electromagnetic interference scene of the actual rail transit signal system is analyzed to cover the random and coexisting electromagnetic interference combination of the field, so that the confidence coefficient of the risk assessment result in the complex electromagnetic environment of the field is improved, and the analysis is ensured to cover the random and composite scene which cannot be reproduced by the standard test; moreover, the electromagnetic interference risk condition between a relation pair formed by a plurality of devices in the rail transit signal system is determined, that is, systematic evaluation of complex electromagnetic interaction is realized through system-level analysis.

The invention provides an emergency plan management method and system based on digital display and intelligent storage. The method comprises the following steps: acquiring fault information generated by a current rail transit signal system; matching a corresponding fault processing emergency plan through a pre-trained matching model based on the fault information; the fault processing emergency plan is displayed through a visual device; wherein the pre-trained matching model is obtained by training a pre-acquired convolutional neural network model through historical fault cases and corresponding fault processing emergency plans. The problems that an existing rail transit fault emergency plan is low in response speed and difficult to be linked with a site in real time are solved.

The invention discloses an urban rail signal and platform door integrated system comprising an integrated platform door system which comprises a central control cabinet and a plurality of platform side devices; part of subsystems of the central control cabinet are connected with the signal system through Ethernet interfaces and connected with the comprehensive monitoring system and part of platform side equipment through hard wire interfaces so as to receive control signals of all parties. Part of subsystems of the central control cabinet perform logic processing on the received control signals, and the logically processed control signals are sent to platform side equipment for controlling a platform door; and the platform side equipment for controlling the platform door responds to the control signal of the highest level according to the priority sequence and executes corresponding platform door control operation. According to the invention, network security communication is adopted to replace hard wire connection, so that intermediate control links are reduced, the linkage time is greatly shortened, the linkage efficiency is improved, the number of on-line trains is reduced, and the energy consumption is reduced.

The present invention pertains to the field of train positioning and communication for rail transit signaling systems, and relates to an integrated rail transit positioning and communication method and system, a device, and a medium. The present invention is aimed at modifying and redesigning a frame format of a secondary surveillance radar, and achieves train positioning for signaling system control purposes by means of time-division multiplexing of a communication frame and a positioning frame, performing ranging between a plurality of vehicle-mounted tags and ground base stations, and querying a built-in electronic map. In addition, the present invention provides three train-to-ground methods, i.e., positioning frame-based point-to-point communication, communication frame-based broadcasting, and communication frame-based point-to-point communication, to enable train control information interaction between a train and a control center, and thereby achieve communication and positioning integration. Compared with the prior art, the present invention provides a standby communication positioning system for a rail transit signaling system, which improves signaling system communication and positioning reliability, and switches to an active system when the signaling system fails, thereby ensuring the normal operation of a train operation control system.

The invention discloses a rail transit signal system updating method and device, and relates to the technical field of rail transit, and the method comprises the steps: S2, after a rail is switched to a double-line two-way automatic block mode, optimizing a safety time interval between adjacent same-direction trains in combination with an atlas matrix B, and dynamically adjusting signal display and operation instruction issuing based on an optimization result, the system can flexibly judge whether the train is allowed to enter the next block section or not in different operation scenes, the problem of instruction conflict when opposite trains enter the same section at the same time is effectively solved, and direction consistency and path exclusiveness in the train operation process are guaranteed. And S3, further extracting the track utilization rate through the conflict detection index I constructed in the step S3 in combination with the optimized train spacing parameter, and identifying the safe utilization range of track resources according to the track utilization rate, so that whether the current track is in a normal, overload or sparse state or not can be evaluated in real time.

The embodiment of the present specification provides a train control method and device for a signal system when a catenary is powered off, wherein the method comprises the following steps: in the case that the train catenary is powered off, obtaining the current catenary power supply state information of the train through the signal system; based on the catenary power supply state information, disconnecting the traction of the train through the signal system, outputting emergency braking parking, and after the train is parked stably, outputting holding braking. The embodiment of the present specification can be applied to all urban rail transit projects equipped with signal systems, has strong universality, and can improve the safety of train operation.

The present application discloses an interface device for connecting on-vehicle signal equipment of an intelligent rail train to a vehicle, which relates to the field of rail transit signal systems and solves the problem that the traditional ATC cabinet interface solution is not applicable to intelligent rail trains. The running state of the train and the state of the signal system are monitored in real time through various connectors and sensors. Among them, the specific connection plan of each heavy-duty connector realizes the signal transmission of the train auxiliary driving module, the train automatic protection system, and the train automatic driving system, controls the running and safety of the train, and improves the driving efficiency and safety; part of the signals of the train automatic protection system and the train automatic driving system are communicated with the vehicle management system through the fifth heavy-duty connector, and part of the wired connections are replaced by wireless signal transmission, reducing the burden and complexity of the heavy-duty connectors, meeting the special operation scenarios and safety requirements of intelligent rail trains, and only one ATC cabinet is required to realize signal communication, reducing the cost and improving the utilization rate of the signal system.

This invention relates to a control method, device, equipment, and medium for train slippage protection. The method uses a signal system to monitor the train braking process in real time, automatically identifies when the train enters a slippage state and performs displacement slippage compensation. When the duration of the slippage exceeds a set threshold, the method handles the train's loss of position and outputs emergency braking to stop the train. Compared with existing technologies, this invention has the advantages of reducing the impact of train slippage on operations while ensuring operational safety.

The invention discloses an SIL2 security level vehicle-mounted signal system and a control method thereof. The system comprises a security calculation core, a CLU3 module and an input and output VDU module. The safety calculation core comprises a CLU1 module and a CLU2 module, realizes a system safety function, and performs dual-channel data comparison and internal self-inspection; the VDU executes input acquisition and output control, a safe output channel of the VDU enters and maintains a non-output state when an internal fault is detected, and fault information is reported; the CLU3 is independently responsible for a non-safety function; wherein the security calculation core performs fault diagnosis and security level division by integrating self-inspection, dual-channel comparison and VDU report information, and generates alarm information; and the CLU3 outputs an alarm signal corresponding to the fault level to an external system or a driver according to the fault level, and final safety control is completed by the external system or the driver. Compared with the prior art, the system complexity and cost are effectively reduced on the premise of ensuring the SIL2 security level through fault grading, alarming and man-machine cooperative control mechanisms.

1. The name of the design product: plug puller (mechanical type). 2. The use of the design product: a tool for removing the plug of the end of the signal system lead, jumper wire, choke wire, etc. in the rail transit industry. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The invention provides a rapid deployment method and device for a rail transit signal system, and relates to the technical field of rail transit, and the method comprises the steps: splitting a code program of the rail transit signal system into execution codes of a plurality of business services, and constructing a container mirror image for each business service; initializing the deployment file template to generate a configuration file; based on the configuration file and the container mirror image, executing a deployment task in the to-be-deployed environment; and performing health state check on each started business service, and verifying that the rail transit signal system is successfully deployed according to the configuration file. According to the method and the device provided by the invention, the container mirror image is constructed for each business service, so that the separation of the running environment and the service application is realized; the problem of configuration complexity caused by operation environment difference is solved through the configuration file; through the configuration file and the container mirror image, the deployment efficiency of the rail transit signal system is improved, the risk caused by human errors is reduced, and the operation and maintenance cost of the system is reduced.

A system includes a first coupled to a printed circuit board (PCB) and a second device coupled to the PCB. The system further includes a link coupled with the first device, the second device, and the PCB. The link includes a clock lane associated with associated with transmitting a clock signal and one or more data lanes corresponding to the clock lane, where the link is configured to transmit ground referenced signaling (GRS).

A sleeve signalling system enables robust, mechanical and highly visible binary signalling. The system comprises an elongated signalling element comprising a signal marking, and a sleeve disposed over the signalling element. The sleeve is slidable along the elongated signalling element between a first position that covers the signal marking and a second position that uncovers the signal marking.

A signaling system includes a pre-emphasizing transmitter and an equalizing receiver coupled to one another via a high-speed signal path. The receiver measures the quality of data conveyed from the transmitter. A controller uses this information and other information to adaptively establish appropriate transmit pre-emphasis and receive equalization settings, e.g. to select the lowest power setting for which the signaling system provides some minimum communication bandwidth without exceeding a desired bit-error rate.

The invention relates to an active protection train autonomous operation system, and belongs to the technical field of rail transit equipment. The train performs point-to-point direct communication with the adjacent train through the vehicle-mounted subsystem VV-VOBC, and the vehicle-mounted subsystem VV-VOBC realizes point-to-point distance measurement through a data link distance measurement technology. According to the invention, the train directly communicates with the adjacent train, negotiates reasonable use of resources, obtains possible unexpected route resource conflicts according to the relative distance, applies for resource escape or mobile authorization, and actively drives away from a conflict area, so that the safety of a signal system is improved; for the out-of-control train, the forward train can approach the out-of-control rear train in a same-speed gradual approaching mode according to the position relation between the forward train and the adjacent out-of-control rear train and the bearable impact range of the train, and the rear train is forced to stop slowly and run to a specified safe position for rescue or evacuation.

A railway vehicle monitoring and signaling system 30 includes trackside devices (e.g. track circuits 36 and signals Sx, Sy) for reporting Safety Integrity Level 2 (SIL2) data regarding the presence or

Aerodrome signalling system (100), comprising a plurality of signalling units (2), each comprising at least one aerodrome signalling device (9, 10), and a central communication unit (4) configured for data communication with the plurality of signalling units. The plurality of signalling units (2) each comprise a wireless data communication device (18) configured for cellular data communication and at least one sensor device (15) configured to capture measurement data in relation to one or more of: an environmental condition, a meteorological condition, a presence of an object, a movement of an object and a status condition relating to the respective signalling unit other than a status condition of the respective at least one signalling device. The at least one sensor device (15) is configured to communicate the measurement data to the wireless data communication device for transmission via a cellular network.

The utility model discloses auxiliary equipment for end connection of rail transit vehicles, which comprises a bottom plate, a rotating sleeve fixedly mounted at the top of the bottom plate, a telescopic rod rotatably mounted in the rotating sleeve, an electric cylinder fixedly mounted at the top of the bottom plate, a mounting plate fixedly mounted at the output end of the electric cylinder, and a rotating rod rotatably mounted at the top of the mounting plate. Driving wheels are fixedly mounted on the outer sides of the two ends of the rotating rod; the two binding drawstrings assist in pulling the carriage to move, so that the time required by traditional vehicle connection is greatly shortened, errors and delay possibly caused by manual adjustment of the position of the carriage are reduced, and the overall operation efficiency is greatly improved; compared with the prior art, great convenience is provided for follow-up accurate and rapid connection work of the ends of the carriages, installation of a mechanical locking device and butt joint of an electrical system and a signal system can be completed in a more compact time window, and the accuracy and safety of train assembly are further ensured.

The invention discloses a graphical code verification method, and relates to the technical field of rail transit signal systems, and the method comprises the following steps: S1, reading a new version demand document FS, a design document AD and a graphical code EMIL of a subsystem; s2, comparing the demand document FS and the design document AD of the new version and the old version, and associating to obtain an NEWTrace table file and an OLDTrace table file; s3, the NEWTrace table file and the OLDTrace table file are traversed, and a ChangeLog table is obtained; s4, reading a new and old version graphical code EMIL and a ChangeLog table, and generating a code comparison text file and an AD check text file; s5, traversing and updating the Themes verification table; s6, verifying the consistency of the requirement for modifying the entry and the code; and S7, summarizing all verification results of the Themes verification table. According to the method, demand design and codes are integrated, corresponding modification demands and modification codes are identified and triggered through an automatic method, walking verification is facilitated, and the code walking verification efficiency is improved.