645 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 provides a fault processing method and system for voice dial testing, and belongs to the technical field of communication network operation and maintenance, and the method comprises the steps: receiving a fault request from a signaling system; performing fault type identification on the fault requests in a preset cache period, and merging and compressing the fault requests of the same fault type; determining a first fault request in the merge set, and executing a routing tracking operation on a destination IP on a main / standby data communication equipment switch corresponding to a source IP of the first fault request to obtain current network state information; according to the current network state information and the historical network state information, whether routing abnormity and time delay abnormity exist or not is judged; determining a fault type according to a comparison result, and generating real-time alarm information; and in a preset time period, sending the real-time alarm information to a manager terminal. According to the invention, on the basis of real-time routing tracking, historical alarm comparison and time delay anomaly detection, large-scale fault requests can be quickly and accurately processed in a short time.

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 door module for use with a door system, and applications thereof, are disclosed. The door module comprises a door frame and a door articulated to the door frame, a touchless door module comprising a door motor assembly, a door locking assembly, a control assembly and a power source. The door motor assembly can be configured for displacing the door between an open position and a closed position, responsive to a door opening signal or a door closing signal, respectively, emitted from the control assembly. The locking assembly can be configured for displacing a locking bolt between a locked position at which it is engageable with a locking strike, responsive to a locking signal emitted from the control assembly, and an unlocked position, responsive to an unlocking signal emitted from the control assembly. The control assembly comprises in some embodiments at least one touchless inside sensor, wherein an entrance signal includes a signal received form the at least one inside touchless sensor, resulting in generating a door closing signal and an occupied signal, and an exit signal received by the at least one inside sensor resulting in generating a door opening signal. The control assembly may further comprise a signaling system configured for emitting noticeable door mode indicia responsive to door parameters.

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.

Systems and methods for wireless communications are disclosed herein. In one embodiment, a wireless communication device determines that transmission of uplink control information (UCI) on at least a portion of a first uplink resource is canceled. In response to determining that the transmission of the UCI on the first resource is canceled, the wireless communication device determines a second uplink resource for transmitting the UCI. The wireless communication device transmits the UCI on the second uplink resource.

The invention discloses an intelligent rail transit signal system and an automatic scheduling method, and relates to the technical field of rail transit, and the method comprises the steps of data acquisition, machine learning modeling, scheduling optimization algorithm based on machine learning, scheduling strategy generation, real-time signal control, automatic scheduling decision, and system monitoring and optimization. By adding the physical constraint to guide the generation process, the problem that the rail transit data generation sample does not conform to the actual physical law is solved; the problems of insufficient data generation diversity, generation mode collapse and the like are solved through methods of dynamic memory mechanism optimization generator training and the like. The problems of high-dimensional redundancy, nonlinear structural features, poor model generalization ability and the like of rail transit data are solved by using a negentropy excitation function.

The invention discloses an urban rail transit management system based on multi-source data fusion, and the system is characterized in that a data collection module is connected with a data preprocessing module, and is used for collecting multi-source data of a power supply system, a vehicle system and a rail signal system; the data preprocessing module is connected with the data fusion center and is used for denoising, filtering and normalizing the received original data; the data fusion center is connected with the data acquisition module, the data preprocessing module and the decision analysis module and is used for realizing fusion of multi-source data; the decision analysis module is connected with the data fusion center and the control execution module and is used for performing fault prediction and emergency processing decision; the control execution module is connected with the decision analysis module and an external execution mechanism and used for controlling the execution mechanism to guarantee operation of the rail transit system according to instructions of the decision analysis module. According to the invention, operation efficiency and resource configuration can be improved, risks are reduced, shutdown time is reduced, safety and experience are guaranteed, maintenance and operation costs are reduced, and benefits are improved.

The invention provides a platform door system gap detection device control method, which specifically comprises the steps that a signal system sends a door closing command to a platform door system and then keeps a command output state, the platform door system controls a sliding door to be closed after receiving the signal door closing command, and the state is fed back to a gap detection device after the sliding door is closed and locked; the gap detection device starts gap detection when receiving that the sliding door is in a closed and locked state, and feeds back the closed and locked state of the platform door system to the signal system when the gap detection is not abnormal; after the vehicle door is normally closed and locked, the vehicle door is fully closed, and the locking state is fed back to the signal system; the signal judges that the train door and the platform door are closed and the door closing command is canceled when being locked, the gap detection device cancels detection after detecting that the signal door closing command disappears, and the signal system controls the train to leave the station after confirming that no obstacle is retained in the gap detection device. According to the method, gap detection is matched with train operation, and the safety of train operation is improved.

Systems and devices for signal arbitration are described. A first asynchronous circuit can receive and sanitize a first non-persistent signal representing a first request to generate a first persistent signal. A second asynchronous circuit can receive and sanitize a second non-persistent signal representing a second request to generate a second persistent signal. A mutual exclusive circuit can arbitrate between the first persistent signal and the second persistent signal and output a grant signal to issue a grant. A control circuit can control an operation mode of the first and second asynchronous circuits based on a control signal, a first grant signal indicating a grant status of the first request, a second grant signal indicating a grant status of the second request, the first persistent signal and the second persistent signal.

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 invention discloses a model library-based spaceflight radio frequency signal quality multi-domain evaluation and compensation method, and belongs to the technical field of wireless communication. The implementation method comprises the steps of determining signal system parameters based on various CCSDS standards and a spaceflight protocol system, extracting related parameters of spaceflight standards in a time-frequency domain, generating standard time-frequency domain radio frequency signals, converting the standard time-frequency domain radio frequency signals into a related domain, a modulation domain, an energy domain and a polarization domain, and establishing spaceflight radio frequency signal sub-model libraries of the domains; obtaining a time-frequency domain measured signal through a receiver, integrating time domain information and frequency domain information, and constructing a time-frequency domain sub-evaluation model; constructing a multi-domain comprehensive evaluation model by adopting a parallel data transmission mode and a weight data processing method; calculating the weight of the evaluation result of each domain through an entropy weight method, and obtaining a comprehensive quality evaluation result of the spacecraft radio frequency signal; and based on the distortion coefficient, a robust signal equalization algorithm is adopted to process the signal, the influence of the distortion effect on the signal quality is compensated, and the robustness and the anti-interference capability of signal transmission are improved.

The invention relates to a constant envelope modulation method based on the combination of Interplex and CSK. The method comprises the following steps: generating at least one group of CSK authentication signals according to an authentication information rate and an authentication time interval; calculating a modulation coefficient according to the attenuation degree of the signal carrier-to-noise ratio; generating a transmission signal according to a preset signal system; taking each group of authentication signals as an input signal and modulating the input signal and the transmission signal on the same carrier through Interplex phase modulation; and calculating the modulation coefficient when the authentication signal is located at the frame header position of the carrier signal, and setting the modulation coefficients of other carrier signals to be 0. Through the technical scheme of the invention, the generation rate of the authentication signal is further improved, the influence on the original signal can be reduced by performing authentication at the frame header position, and the error rate of authentication is further reduced.

The invention discloses an unmanned aerial vehicle target inversion method, system and device under a strong sea clutter background based on time-frequency-Doppler domain joint filtering and time-frequency ridge analysis, and a medium, and aims at a linear frequency modulation signal system radar, a multi-rotor unmanned aerial vehicle radar echo model is established, and a multi-rotor unmanned aerial vehicle radar echo is calculated. Actually measured sea surface radar echoes are added into multi-rotor unmanned aerial vehicle radar echoes to form unmanned aerial vehicle radar echoes under a complete strong sea clutter background, namely total radar echoes; performing time-frequency-Doppler domain joint filtering on the total radar echo to obtain a filtered total power spectral density P1; performing time-frequency ridge line extraction on the filtered total power spectral density P1 to verify the fitting degree; the system, the device and the medium are used for bearing and implementing the method. Compared with traditional single-field unmanned aerial vehicle detection, the method can better suppress sea clutters, is wider in application range, and can accurately detect and recognize an unmanned aerial vehicle target in a high-sea-condition environment.

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.

A safety information supervision apparatus applied to a high-speed rail signaling system includes a communication processor, a Radio Block Center (RBC) interface machine, a Centralized Traffic Control (CTC) interface machine, a supervision and analysis server, an analysis terminal, and a storage device, where the communication processor and the RBC interface machine are communicatively connected to the supervision and analysis server through a monitoring network. The CTC interface machine is communicatively connected to the CTC system of a station and the supervision and analysis server, so as to obtain train information in the CTC system and to transmit an analysis result of the supervision and analysis server to the CTC system through the CTC interface machine. Multi-source data fusion analysis is used to perform filtering and validity analysis on basic data, thereby reducing false alarms.

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 embodiment of the invention provides an operating system and a signal system cloud platform, and the operating system comprises an abstraction layer which is used for packaging the architecture-level drive of a computing node, architecture-level virtualization and the core of a CPU, and providing a packaging interface irrelevant to a hardware system for other layers; the microkernel layer is used for constructing various components of the microkernel by using the interface provided by the abstraction layer; and the application layer comprises a plurality of virtual machines running on a micro kernel, the virtual machines comprise real-time virtual machines and non-real-time virtual machines, and each real-time virtual machine is configured with resources isolated from other virtual machines. According to the technical scheme of the embodiment of the invention, the computing node hardware is abstracted, and the microkernel constructed based on the abstraction supports real-time and non-real-time virtual machines, so that applications with different security levels run in parallel on the same physical computer, and the utilization efficiency of hardware resources is improved.

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 discloses a civil aircraft cabin door signal system modeling method based on MBSE, and the specific operation comprises the following steps: (1) building an operation analysis layer of a cabin door signal system, analyzing the operation condition of the system in a real environment, and defining the context and operation scene of the system; (2) establishing a system analysis layer of the cabin door signal system, identifying functional requirements and non-functional requirements which need to be met by the system, and determining targets of the system; (3) establishing a logic architecture layer of the cabin door signal system, designing logic components of the system on the basis of system analysis, and describing functional modules and mutual relations thereof; and (4) establishing a physical architecture layer of the cabin door signal system, converting a logic architecture into specific physical implementation, and defining hardware and software components. According to the method, a complete civil aircraft cabin door signal system model is constructed, the risk and the problem of traditional document-based requirements are effectively avoided, and fusion between a system architecture and all determined requirements is facilitated.

The invention provides a communication device of a train. The device comprises a multi-system trackside control system and a vehicle-mounted control system, the multi-system trackside control system comprises an existing trackside control system and a new trackside control system, and the new trackside control system is formed by transforming and upgrading the existing trackside control system; the vehicle-mounted control system communicates with the existing trackside control system and the new trackside control system through the same communication protocol. And the vehicle-mounted control system compatibly processes the application layer message of the existing trackside control system and the application layer message of the new trackside control system. By means of the communication device, barrier-free communication between the vehicle-mounted control system and the multi-system trackside control system can be achieved in the transition stage, and therefore the upgrading cost of an existing signal system of urban rail transit is greatly reduced.