515 results about "Signaling system" patented technology

The invention discloses an automatic driving vehicle key signal testing method and system based on real data driving. According to the method, data are collected in a real road scene, test cases are automatically generated, a standard test case library is constructed, hierarchical or parallel testing is carried out in virtual simulation, hardware-in-the-loop and real vehicle environments, and result feedback and closed-loop iteration are achieved through automatic analysis. The system comprises a data collection module, a test case generation module, a standard test case library module, a test execution module and a result feedback module. According to the invention, the problems of insufficient scene coverage and low authenticity and efficiency of the existing test method are solved, the comprehensiveness, authenticity and test efficiency of the test scene are improved, and the safety and reliability of the key signal system of the automatic driving vehicle are guaranteed.

The present invention relates to an integrated train dispatching system and method for regional rail transit, and a medium. The system comprises: a network-wide operation diagram editing and display module, configured to construct and display a regional rail transit network-level operation diagram; a center / station functional module, configured to, on the basis of center / station mode configuration information, activate a corresponding functional module, and implement center dispatching or station dispatching; a line hybrid dispatching functional module, configured to, on the basis of line automation level configuration information, activate a functional module corresponding to the current automation level, and implement hybrid dispatching management of lines having different automation levels; and a full-function scenario dynamic dispatching module, configured to perform full-lifecycle dynamic dispatching of trains on the basis of different signal system conditions, the signal systems comprising CTCS2 + ATO + ATB, cross-line operation CBTC, and CBTC and CTCS2 + ATO + ATB cross-line operation. Compared with the prior art, the present invention has the characteristics of full-scenario coverage, high compatibility, a high degree of automation, and wide practicability.

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.

A system for warning drivers of the movements semi-tractor and trailer vehicles of the semi-tractor's intended course, and warning drivers of other vehicles around the semi-tractor of the course and intended movement of the semi-tractor. An example includes a closed circuit video display system including cameras mounted at the front corners of the semi-tractor, cameras mounted at the rear of the trailer, and cameras mounted from a central area of the semi-tractor trailer. The system also uses a written message display system having display modules that display messages to vehicles near the semi-tractor. The displays can be used to present various pre-programmed messages or messages created by the driver of the semi-tractor through a message input interface, allowing the driver of the semi-tractor to provide customized massages to other nearby drivers.

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.

A method for calculating and comparing evaluation indices for a signal system of an intersection includes: a traffic statistical information generation step of receiving image information in real time through cameras to derive traffic object information including traffic volume for each driving direction and traffic volume for each lane on a corresponding road at a preset first cycle, and to generate traffic statistical information including the traffic object information and intersection environment information; a digital twin generation step of inputting the traffic statistical information to a simulator, and implementing a traffic situation of the intersection as a graphical digital twin; and a composite congestion index derivation step of deriving a composite congestion index from each of an actual digital twin and a virtual digital twin, in which the evaluation indices are derived based on a congestion time of a predetermined number of vehicles at the corresponding intersection.

Systems and methods for wireless communications are disclosed herein. In one embodiment, a wireless communication device that a first transmission on a first resource is canceled. In response to determining that the first transmission on the first resource is canceled, the wireless communication device performs a second transmission of a physical uplink shared channel (PUSCH) on a second resource. Configuration parameters of the second transmission of PUSCH on the second resource are configured by a network side or obtained from the first transmission.

Systems and methods are disclosed for a lid insert and cover for use with a utility box having any type of instrument, e.g., a leak detection or geo-location instrument, with an antenna for transmitting any type of signals related to the instrument, e.g., a leak detection, geo-location or electrical current or load sensing signal. The insert may include a top plate configured to be mounted in an upper recess of the cover and a bottom plate configured to be mounted in a lower recess of the cover. The bottom plate may define a plurality of openings for fasteners, e.g., screws, bolts or other mechanical mounting mechanisms and / or zip-ties, that are configured for securing the instrument and / or its antenna within the box. When properly mounted therein, the antenna of such instruments can effectively transmit or receive signals into and out of the utility box.

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.

A system for signaling intent of an autonomous vehicles. The system is comprised of a memory storing executable instructions representing a signaling display module on a trailer of an autonomous vehicle. The system also comprises a processor coupled to the memory and configured to execute the signaling display module. The processor is configured to receive data from an autonomy computing system descriptive of a condition near the autonomous vehicle, process the data to generate a message relating to the condition indicating a remedial action of the autonomous vehicle in response to the condition, and transmit the message to a signaling display on the trailer prior to executing the remedial action.

A turn signal system and a multi-vehicle system including the turn signal system are disclosed for creating the safe and efficient movement of objects through physical space. The turn signal system includes a straight turn signal. The straight turn signal according to embodiments disclosed herein delivers safe and clear messaging to users of pathways or roads and adds predictability. It also removes the excuse for a non-signal over the prior art methods for signaling-thus contributing to the reduction of road rage and the statement “why did you not signal.”

The invention provides an urban rail transit communication informatization monitoring device which comprises a rail health monitoring module which combines acoustic CT scanning and electromagnetic eddy current detection to generate a steel rail three-dimensional defect image and obtain rail defect data. The electromagnetic environment sensing and monitoring module extracts quantum noise features, establishes an electromagnetic field-signal system coupling model, and predicts interference of quantum noise on the CBTC system. And the communication signal quality monitoring module monitors signal strength abnormity by using a wireless spectrum analysis algorithm. And the data processing center fuses and analyzes various data and generates a monitoring report. And the visualization module displays the report. The integration technology improves the accuracy and reliability of track defect detection, and enhances the support of track maintenance data. The electromagnetic environment sensing and monitoring module improves the anti-interference capability of the communication system. The communication signal quality monitoring improves the monitoring precision and signal integrity verification, and reduces the false alarm rate.

The invention relates to a device for unlocking interlocking of a signal system and a platform door, an implementation method and an application method.The device is connected with the signal system and comprises a platform door whole-side bypass switch box, and the platform door whole-side bypass switch box is arranged on the side of the signal system; the platform door whole-side bypass switch box comprises platform door whole-side bypass switches corresponding to all stations. By rotating the platform door whole-side bypass switch corresponding to a certain station, the platform door whole-side bypass relays of the ascending and descending platforms of the certain station are activated or reset. Compared with the prior art, the method has the advantages of improving the operation capability of the urban rail transit and the like.

Systems and methods for model tuning and inference can include leveraging quality signals for determining resources to be more closely utilized during training and inference. The systems and methods can include obtaining a training dataset that includes a plurality of content items associated with a plurality of resources. The systems and methods can determine a plurality of quality scores for the plurality of resources. The systems and methods may then tune the parameters of the generative model based on the plurality of content items and the plurality of quality scores. The plurality of quality scores may be leveraged to train a reward model to be utilized for model-generated output selection.

Systems, methods, and instrumentalities are disclosed for interleaving coded bits. A wireless transmit / receive unit (WTRU) may generate a plurality of polar encoded bits using polar encoding. The WTRU may divide the plurality of polar encoded bits into sub-blocks of equal size in a sequential manner. The WTRU may apply sub-block wise interleaving to the sub-blocks using an interleaver pattern. The sub-blocks associated with a subset of the sub-blocks may be interleaved, and sub-blocks associated with another subset of the sub-blocks may not be interleaved. The sub-block wise interleaving may include applying interleaving across the sub-blocks without interleaving bits associated with each of the sub-blocks. The WTRU may concatenate bits from each of the interleaved sub-blocks to generate interleaved bits, and store the interleaved bits associated with the interleaved sub-blocks in a circular buffer. The WTRU may select a plurality of bits for transmission from the interleaved bits.

The invention relates to the technical field of brake control, in particular to a dual-redundancy brake system capable of interactively sharing and reconstructing data and a brake control method.The dual-redundancy brake system comprises an anti-skid control parameter acquisition module, an anti-skid brake control box, a main signal system and an auxiliary signal system, the acquisition module is used for acquiring antiskid control parameters of a brake system; a main control board and an auxiliary control board are arranged in the anti-skid brake control box and communicate with each other through a bus. The main signal system is used for transmitting a redundancy signal of the anti-skid control parameter acquisition module to the main control board; and the auxiliary signal system is used for transmitting the other redundancy signal of the anti-skid control parameter acquisition module to the auxiliary control board. According to the invention, the working continuity and safety of the system are ensured, and the use efficiency and reliability of the brake system are greatly improved.

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.

Systems, methods, and other embodiments associated with frequency-domain resampling of time series are described. An example method includes generating a power spectrum for a first time series signal that is sampled inconsistently with a target sampling rate. Prominent frequencies are selected from the power spectrum. Sets of first phase factors that map the prominent frequencies to a frequency domain at first time points are generated. Coefficients are identified that relate the sets of first phase factors to values of the first time series signal at the first time points. Sets of second phase factors that map the prominent frequencies to a frequency domain at second time points are generated. A second time series signal that is resampled at the target sampling rate is generated by generating new values at the second time points from the coefficients and sets of second phase factors.

The invention provides an associated data acquisition method, a medium and electronic equipment, and the acquisition method comprises the steps: building a business-data circulation dual-domain topology model, and endowing each data node in the business-data circulation dual-domain topology model with a dynamic initial weight; identifying data nodes with strong business semantic association, establishing data association groups, and labeling business semantic tags for data belonging to the same data association group; constructing a cross-service data interaction chain, and generating a basic acquisition baseline according to the data interaction chain; identifying high cross nodes in the data interaction chain; classifying and screening the data nodes; and collecting the data content of each data node. According to the associated data acquisition method, a dynamic data topological associated acquisition mechanism driven by service logic is provided, and accurate acquisition of the service logs is realized by constructing a mapping model of the core service logic and the data flow of the signal system and combining a multi-dimensional weight fusion judgment algorithm and an adaptive content screening engine.

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.

Systems and methods of controlling a device using detected changes in a neural-related signal of a subject are disclosed. In one embodiment, a method of controlling a device or software application comprises detecting a first change in a neural-related signal of a subject, detecting a second change in the neural-related signal, and transmitting an input command to the device upon or following the detection of the second change in the neural-related signal. The neural-related signal can be detected using a neural interface implanted within a brain of the subject.