181 results about "Track circuit" patented technology

The invention relates to the field of railway shunting management and control, and provides a field intelligent shunting management and control method and device.The method comprises the steps that field real-time information is obtained, and the field real-time information comprises a vehicle license plate picture, laser ranging information and an original signal collected by a track circuit; the field section real-time information is recognized, modeling information is obtained, and the modeling information comprises vehicle identity information, vehicle position coordinates and real-time station track occupancy states; establishing a digital twinborn model according to the modeling information; performing dynamic planning algorithm processing according to the digital twinborn model in combination with preset vehicle target distribution, station track capacity limitation and locomotive performance parameters to obtain a shunting coupler plan; the turnout position is adjusted to the preset angle according to the shunting coupler plan, the overall efficiency of shunting operation and the accuracy of the plan can be remarkably improved, and the safety and reliability of the operation process are effectively enhanced.

The utility model relates to the technical field of rail transit, in particular to a double-end I-shaped steel type anti-falling guardrail which comprises a guardrail support, a walking rail and an I-shaped steel guardrail body. The I-shaped steel guard rail is clamped at the top of the insulating sleeve boot type elastic cushion block and fastened on the guard rail support through a detachable fastening mechanism, the walking rail is locked on the guard rail support through a locking mechanism, and the portion, making contact with the guard rail support, of the bottom of the walking rail is sleeved with an insulating spacer. The service life is doubled, meanwhile, the structural stability is higher than that of a single working face, meanwhile, the insulating property is high, the requirement for track circuit laying is lowered, the safety of a track circuit is further guaranteed, and therefore cross-signal-area laying can be conveniently conducted.

The invention relates to a BERT and multi-module fusion-based track circuit fault label classification method and device and a medium, and the method comprises the steps: obtaining a to-be-classified track circuit fault text, and carrying out the cleaning and standardization processing of the to-be-classified track circuit fault text; performing word segmentation and vectorization processing on the track circuit fault text to generate a lexical symbol sequence conforming to BERT encoder input specifications; extracting a context semantic vector representation of the input lexical symbol sequence through a BERT encoder; performing feature extraction through a TextCNN module and a self-attention module which are parallel to obtain local features and weighted global features, and splicing the local features and the weighted global features to obtain a comprehensive feature vector; and synchronously generating a multi-label classification result of a fault phenomenon, a fault reason and a solution measure corresponding to the current fault text through a multi-label classification head based on the comprehensive feature vector. Compared with the prior art, the method has the advantages of high discrimination, high accuracy, high practicability and the like.

The invention belongs to the technical field of rail traffic signals, particularly relates to a rail circuit interference test analysis method, system and equipment, and aims to solve the problems that a mixed interference source is difficult to accurately position, accidental faults cannot be captured and diagnosis is subjective. The method comprises the following steps: performing multi-channel synchronous acquisition and real-time storage on a voltage signal and a current signal of a track circuit; processing the original signal in real time, analyzing different frequency components through high-resolution spectrum analysis, and comparing with a preset threshold in combination with time domain analysis to trigger an alarm and generate a real-time analysis report; and performing intelligent analysis on historical data, performing verification and feature recognition on fault period data by establishing a probability model of a normal working condition, and generating a diagnosis analysis report. According to the method, the interference source can be accurately separated and positioned, the transient fault is automatically captured, objective and intelligent fault diagnosis is provided, and the efficiency and reliability of track circuit troubleshooting are remarkably improved.

The utility model discloses a track circuit reader test interface switching device, and relates to the field of track circuit equipment. The utility model aims to solve the problem that the traffic safety is influenced because the number of test items of TCR equipment is small. According to the track circuit reader test interface switching device of the utility model, a CAN signal input / output end of a CAN isolation transmit-receive module is used for being connected with a CAN bus of a DB15 connector, and a logic level input / output end of the CAN isolation transmit-receive module is connected with a logic level input / output end of an MCU. The parallel port information input and output end of the MCU is connected with the parallel port information input and output end of the optocoupler, and the optocoupler outputs or receives signals through the external input and output signal test interface module.

The present application relates to the technical field of switch snow melting heating control, and particularly to a railway switch snow melting intelligent control method and system, the method comprising the following steps: obtaining early warning information indicating that a vehicle is about to arrive at a switch, the electric heating element of the switch being divided into a core heating zone and a regular heating zone; based on the early warning information, a first heating mode is executed, the first heating mode concentrating heating power on the core heating zone; the track circuit occupation state of the switch itself is monitored, and the actual occupation duration of the vehicle occupying the track circuit is recorded; after the track circuit occupation state of the switch itself is released, the first heating mode or the second heating mode is terminated; by starting core zone heating in advance based on train early warning information, and switching to core zone and regular zone common heating when the train occupies for a long time, the problem of instantaneous and local secondary freezing caused by train passing is effectively solved.

A train simulator test device is disclosed that is operably coupled to a rail to measure the static impedance of the track circuit and to simulate a train by varying the rail inductance for a set period of time. The testing device can select the speed, direction and number of trains to be simulated. By applying a variable inductor on the rail, the test device can simulate that a train enters and exits an island at a variable speed. The test device may use electrical induction on the rail to simulate simultaneous movement of two or more trains in each direction of the track, as well as multiple appearances and routes. The train simulator test device may include simulation software to vary parameters of the train simulation and couple a variable inductor on the rail.

The utility model discloses a communication protocol conversion board and a train control system, and the communication protocol conversion board comprises an Ethernet communication interface module which receives coded data transmitted by a train control master control module through an Ethernet interface and uploads track circuit state data to the train control master control module; the CAN communication interface module is used for acquiring CAN data of two CAN buses of the track circuit equipment through two CAN interfaces and sending two pieces of state inquiry data to the track circuit equipment; the main control logic module is used for receiving the coded data, generating two identical state inquiry data according to the coded data, sending the two identical state inquiry data to the CAN communication interface module, converting the received first CAN data and second CAN data into track circuit state data, storing the track circuit state data in a first buffer, and sending the track circuit state data to a second buffer when the coded data is received in the next period; and sending the track circuit state data stored in the first buffer to a train control master control module. According to the invention, network port resources of the train control master control module can be saved, and the real-time performance and the high efficiency of track circuit state data response are improved.

The invention discloses a track circuit fault cause analysis method based on text record data mining, and belongs to the technical field of track circuit fault diagnosis and analysis in a railway signal system, and the method comprises the following steps: S1, collecting a track circuit fault text, and processing the track circuit fault text into a standardized fault text R; s2, semantic features and word order features of the R are extracted and fused, and a feature set S is output after optimization of an SMOTE algorithm; s3, inputting the S into an FEML model, and outputting a large-class label corresponding to the fault text through parameter optimization, parallel training of a base learner and integration of a meta learner; s4, in combination with the weight value and a Dirichlet multi-term hybrid model, extracting and outputting a fine-grained fault type and a cause thereof under the large-class label; and S5, constructing a visual map by using Neo4j, and realizing association analysis through a Cyber query language. According to the method, the analysis model and the visual knowledge graph are constructed, fault causes are accurately mined, and the operation and maintenance efficiency is improved.

A track circuit apparatus (1) measures a transmission voltage and transmission current of an AC signal transmitted to rails, calculates an impedance equivalent value based on amplitudes of and a phase difference between the measured transmission voltage and transmission current, and determines presence of the train based on values of real and imaginary component values of the calculated impedance equivalent value.

The application discloses a tracking lock type maximum power point tracking circuit and an implementation method thereof, which comprises a rectifier circuit, a control circuit, a step-down-step-up converter control circuit and a step-down-step-up converter. The rectifier circuit is used for converting input alternating current energy into direct current energy. The control circuit is used for judging the length of current inductance demagnetization time, adjusting the current inductance demagnetization time, realizing indirect detection of inductance current zero-crossing point, and generating a switch timing control signal. The step-down-step-up converter control circuit is used for generating a first switch tube driving signal and a second switch tube driving signal. The step-down-step-up converter is used for adjusting input impedance according to the first switch tube driving signal and the second switch tube driving signal, and realizing maximum power point tracking. The application can realize adaptive locking of the maximum power point under different vibration frequencies and different open circuit voltages, improve the tracking speed of the circuit when the input changes, and can be widely applied to the technical field of integrated circuits.

The invention provides an insulation fault detection system and method. The insulation fault detection system comprises a detection unit, a grounding subsystem, a leakage current detection subsystem and a controller. The detection unit is a maximum power point tracking circuit formed by photovoltaic group strings or parallel connection of the photovoltaic group strings. And the grounding subsystem is connected with the positive and negative electrodes of the direct-current bus and the ground and executes positive electrode or negative electrode grounding switching operation. The leakage current detection subsystems are correspondingly arranged on the detection units and used for collecting leakage current. The insulation fault detection system is configured to be capable of forming an independent measurement loop dominated by a current detected unit when executing leakage current collection, the controller receives leakage current values of all the units in sequence based on the independent loop, and through preset numerical value processing, a specific detection unit with an insulation fault can be positioned, and the leakage current values of all the units can be detected. And the approximate position range of the fault photovoltaic module in the detection unit can be further calculated.

The present application belongs to the field of rail transit signal technology, and specifically relates to a rail circuit interference test analysis method, system and device, aiming to solve the problems of difficult accurate positioning of mixed interference sources, inability to capture occasional faults and subjective diagnosis. The present application comprises: multi-channel synchronous acquisition and real-time storage of voltage signals and current signals of the rail circuit; real-time processing of the original signals, analysis of different frequency components through high-resolution spectrum analysis, comparison with a preset threshold to trigger an alarm and generate a real-time analysis report in combination with time domain analysis; intelligent analysis of historical data, verification and feature recognition of fault period data through establishment of a probability model of normal working conditions to generate a diagnostic analysis report. The present application can realize accurate separation and positioning of interference sources, automatically capture transient faults, and provide objective and intelligent fault diagnosis, significantly improving the efficiency and reliability of rail circuit fault troubleshooting.

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

Disclosed are a control method and system for a level crossing device. The method comprises: dividing a level crossing train track into a plurality of track sections; obtaining a section state of each of the plurality of track sections; converting the section state of each track section into a logic variable, and, on the basis of the logic variables, determining a train travel state on the level crossing train track; and, on the basis of the train travel state, controlling a level crossing device on the level crossing train track. The control method for a level crossing device provided in the present invention is compatible with multiple requirements. On the basis of actual conditions and needs, the opening and closing of the level crossing can be automatically controlled using train running position, axle counting detection, and track circuit detection, and by receiving position information provided by an interlocking device, position information provided by an adjacent safety level crossing control system, and position information provided by an approach notification relay. The method includes group control functionality for adjacent level crossings within a region, and is configured with a manual control panel to provide emergency manual control capability.

Embodiments of the present application provide a phase angle adjustment method and device for phase-sensitive track circuit and a phase angle adjuster. The method comprises: in the case of adjusting the phase angle of the phase-sensitive track circuit, closing the intermediate gear switch group; determining the first phase angle of the phase-sensitive track circuit after closing the intermediate gear switch group; determining the range to which the first phase angle belongs; based on the range to which the first phase angle belongs, controlling the state of each switch in the coarse adjustment switch group or the fine adjustment switch group; and adjusting the first phase angle so that the first phase angle is equal to the target phase angle. The phase angle adjustment efficiency of the track railway is greatly improved, and the phase angle of the phase-sensitive track circuit can be adjusted to the target phase angle as soon as possible.

The invention discloses a station yard total-factor cable path management system. The system comprises a total-factor map module and a cable online monitoring module. The total element map module constructs multifunctional map layers which comprise a signal machine control cable path map layer, a track circuit control cable path map layer, a turnout control cable path map layer, a cable groove map layer, a through ground wire map layer, a rail crossing stake map layer, a reference line map layer and the like, and supports overlapping display and element attribute binding between the map layers. And the visualization and management efficiency of the cable information is improved. The cable on-line monitoring module carries out trend prediction and health assessment on the operation state of a key optical cable based on multi-mode sensing data acquisition and time convolution network modeling, and realizes spatialization display of early warning information through a graph hierarchy risk rendering mechanism. The system has the advantages of visible total elements, measurable cable state, predefinable risk trend, controllable layer response and the like, and the intelligent, refined and efficient level of station yard cable management is remarkably improved.

A small-radius curve joint insulation device with guard rails comprises a spacer block lapped between two butt-joint steel rail interfaces, an insulation inner clamping plate is arranged between the spacer block and a steel rail, an insulation outer clamping plate opposite to the insulation inner clamping plate is arranged on the outer side of the steel rail, and a spacer piece is arranged between the butt-joint steel rail interfaces; the I-shaped section insulation is combined with the spacer block and the groove-shaped insulation, so that the problems of pulling deformation and insulation failure caused by uneven stress of double-section insulation are solved; the insulation assembly can be better attached to a track structure, stress is effectively dispersed, the impact resistance is improved, long-term stable operation is ensured, and the requirements of high-load and high-frequency train operation are met. According to the device, the mechanical strength of the insulation assembly is improved, the problems of deformation and aging caused by long-term use are reduced, the service life of equipment is prolonged, the stability and reliability of a track circuit are further improved, and safe and efficient operation of railway transportation is ensured.

The utility model discloses a self-monitoring choke transformer which comprises a choke transformer body and a self-monitoring device, the self-monitoring device is installed on the choke transformer body, the choke transformer body and the self-monitoring device are integrally arranged in a box body of the choke transformer, and the choke transformer body comprises a traction coil and a signal coil. The traction coil and the signal coil are oppositely arranged, the self-monitoring equipment comprises a monitoring and diagnosing module and a current sensor, the monitoring and diagnosing module is connected with the current sensor, the current sensor comprises a single-head sensor and a double-head sensor, the single-head sensor is connected with the signal coil, and the double-head sensor is connected with the traction coil. The indoor side current and the steel rail side current of the trackside choke transformer equipment are collected in real time, the monitoring and diagnosis module analyzes, extracts and calculates mixed signals, basic operation data of a track circuit can be collected conveniently, and analysis and fault positioning of faults such as traction unbalanced current, steel rail insulation joint insulation damage, rail breakage and adjacent line interference are assisted.

The present application relates to the technical field of railway traffic, in particular to a detection vehicle accurate positioning system and method based on multi-channel wireless transmission, which comprises a positioning sending unit, a positioning receiving unit and a detection analysis unit; the detection analysis unit matches and calculates the real-time collected train running distance and track circuit code sequence information with the theoretical path length and expected track circuit code sequence in the line account database to automatically execute route switching decision; the present application realizes the automation of route switching based on the route decision algorithm of train real-time running distance deviation, track circuit code sequence matching and route priority, avoids the lag and misjudgment of artificial presetting, solves the problems of route switching dependence on artificial operation, low efficiency and easy positioning deviation; the present application improves the matching precision of positioning data and line account by combining the multi-dimensional route matching of track circuit code sequence and mileage parameters.

The invention relates to the technical field of railway transportation, in particular to a bifurcation control method and system applied to a semi-automatic block interval. According to the bifurcation control method and system applied to the semi-automatic block interval, in order to reduce manual field management and improve management efficiency and safety, collection and control of state information of temporary turnouts are included in the inspection and temporary control range of adjacent stations; therefore, a departure strategy can be formulated according to the state information of the temporary turnout. Code sections are additionally arranged in front of and behind the temporary turnout, track circuits and code sending control of the sections are included in a nearest station control system, and the station control system encodes state information of the temporary turnout and then sends the encoded state information to the code sections. When the train enters the coding section, the state information of the temporary turnout can be received and processed in real time, so that the operation strategy is adjusted according to the real-time condition, and the train is ensured to safely pass through the turnout area.

Described herein are techniques to enable tracking circuits for crossbar circuits. One embodiment provides an apparatus including a crossbar array comprising: a plurality of bit lines intersecting with a plurality of word lines; and a plurality of cross-point devices, wherein each of the cross-point devices is connected to at least one of the word lines and at least one of the bit lines; a read-out circuit selectively connected to at least one of the bit lines, wherein the read-out circuit is to generate an output representative of the memristor conductance; a tracking circuit comprising a first replica cell that emulates at least one of the cross-point devices, wherein the tracking circuit is to produce a reference voltage; and a converter configured to convert the output of the read-out circuit into a digital output or a pulse-width-modulated signal, wherein the reference voltage is provided to the converter as an input.

The invention provides a method and a device for testing wireless driving permission information, relates to the technical field of railways, and aims to solve the problem that no testing method is used for judging whether the wireless driving permission information is effective or not when a non-train occupies a red light band on a track. The method for testing the wireless driving permission information comprises the following steps: acquiring the current position of a train to be tested, a track circuit fault section and the wireless driving permission information; determining a train operation scene according to the current position of the train to be detected and the track circuit fault section; according to a most limited speed curve corresponding to the train running scene, position information when the running speed of a to-be-detected train is zero is determined, and the most limited speed curve is used for predicting the running speed of the to-be-detected train running on a rail and position information of the train on the rail at the running speed; and determining whether the wireless driving permission information is valid or not according to a matching result of a train permission position in the wireless driving permission information and the position information.

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

A system and method for virtual block stick circuits is presented. The present disclosure implements specialized algorithms adapted to determine the true status of a virtual block based on multiple inputs from different perspectives. In one embodiment, the system can use the far house perspective of that virtual track segment and the PTC hazard for the near virtual track segment directly adjacent to the near house uses the near house perspective of that virtual track segment. For the middle virtual track segments, the near house perspectives of the middle virtual track segments are held ‘TRUE’ if they are already ‘TRUE’ when the train first enters the block, using stick circuits for the near house perspective of the middle track circuits. The vital application can then indicate the true state of the virtual track segment as occupied (FALSE), to protect the train from trains that follow.

The utility model relates to the technical field of rail end insulation for railways, and discloses novel rail end insulation for railways, which comprises a bottom supporting plate, first insulation pads are fixedly connected to the front side and the rear side of the bottom supporting plate, a first water flowing groove is formed in the bottom supporting plate, an insulation mechanism is arranged at the top of the bottom supporting plate, and the insulation mechanism comprises a plug board. The plug board is inserted into the bottom supporting board, the top of the plug board is fixedly connected with an I-shaped gasket, during use, through the arranged insulation mechanism, the rail end insulation effect can be achieved under the interaction of the bottom supporting board, the plug board and the I-shaped gasket, and therefore the bottom supporting board, the plug board and the I-shaped gasket are used for automatically blocking a rail circuit segment of a section; the I-shaped gasket has the advantages that the I-shaped gasket is arranged on the rail end, so that steel rail joints are cut off, electrical control over different rail sections is achieved, and in the using process of the I-shaped gasket, when the I-shaped gasket works on rainy days, the insulating performance of rail end insulation is possibly reduced due to rainwater invasion, and the risk of electric leakage is increased.

This invention discloses a testing method for maintaining human control priority for lateral entry trains in the CTCS-2 onboard train control system. The method includes: the onboard equipment controlling the train in FS mode to run to the turnout lateral receiving track and receiving low-frequency code information sent from the track circuit; determining the turnout type and test cases based on the low-frequency code information; executing the test cases to obtain test results; the test cases include: executing the movement authorization length at the location of the departure signal; receiving no-code / HU low-frequency code sent by the track circuit in the forward turnout area; receiving HU low-frequency code sent by the track circuit within the station; determining whether to reopen the departure signal; checking the onboard equipment's DMI to determine whether the onboard train control system is in human control priority mode, and obtaining the test results. This invention achieves testing of the function of maintaining human control priority mode for lateral entry trains, ensuring the completeness of test coverage and effectively improving test efficiency.

The present application relates to traffic information engineering and control technology field, it is a kind of track electronic execution unit parallel double main redundancy backplane switching system and implementation method, its system includes I series track electronic execution unit, II series track electronic execution unit, wiring backplane, track circuit matching impedance, relay one and relay two, I series track electronic execution unit, II series track electronic execution unit, track circuit matching impedance, relay one and relay two are all plugged on wiring backplane;The present application is by redundant way using I series track electronic execution unit and II series track electronic execution unit simultaneously acquires track section state, and track section state information is synchronously uploaded, when one series fails or pulls out module, since the track input impedance matching characteristics of redundant system does not change, another series can work normally, always have two series or one series to keep normal acquisition, to ensure the reliability of track state acquisition and data.