421 results about "Railway signaling" patented technology

System and method for self powered wayside railway signaling and sensing. The system includes a power scavenging module and a power utilizing module. The power scavenging module is configured to convert an excitation of a rail into electrical power. The power utilizing module is powered by the electrical power and is configured to detect a predetermined characteristic in relation to the rail, a train moving on the rail or an environment of the railroad and to communicate data in relation to the predetermined characteristic.

The invention mainly relates to an electronic device used for intelligently controlling and monitoring a track traffic interlocking control point switch, in particular to a system for controlling and monitoring the position of railway points. The invention is characterized in that the electronic device comprises a control mechanism (1), an electrical signal between an execution mechanism (2) and a point switch (5), and a monitoring mechanism (3) for the self-detection of the device; the control mechanism (1) and the monitoring mechanism (3) are connected with an external computer by a communication fieldbus; the execution mechanism (2) is connected with the control mechanism (1) and the point switch (5); the monitoring mechanism (3) is connected with the execution mechanism (2) and the control mechanism (1); the monitoring mechanism (3) is connected with the external computer by a data communication fieldbus. In the invention, the electronic device is adopted for replacing the existing relay contact circuit; an interlocking control device for railway signal is realized by the integration of controlling, monitoring and supervising, therefore, the invention has the advantages of self-detection function, fault position, and stable and reliable work.

The invention discloses a railway electric service and communication signal integrated operation and maintenance system and method. The system comprises a railway signal comprehensive monitoring subsystem, an electric service workflow subsystem and a converged communication subsystem, wherein the railway signal comprehensive monitoring subsystem acquires monitoring data for transmitting to the electric service workflow subsystem; the electric service workflow subsystem generates work tasks for sending to the converged communication subsystem according to predefined electric service workflow rules and finishes the work tasks according to the decision information that a service terminal generates; the converged communication subsystem receives the work tasks for forwarding to a corresponding service terminals; and the service terminal generates the decision information for giving a feedback to the electric service workflow subsystem. By adopting the system and method provided by the invention, problems may be solved that signal equipment monitoring data cannot be monitored collectively due to decentralized management in railway electric service maintenance work, railway electric service maintenance management and electric service scheduling may be combined in a coordinated way, and multiple work such as the handling of railway electric service department alarm events, routine inspection and maintenance, plan task construction and the like may be handled in a standardized and high efficient manner.

The invention relates to a security processor for fault-tolerant in a railway signal system. The security processor includes a hardware platform and a software architecture, wherein the hardware platform comprises an operation platform with double CPUs, and information is shared by the double CPUs through a double-port RAM; the security input implements the security collection of the same input signal by adopting independent and dissimilar design modes for two channels; the security output monitors the status of an output port of the system to ensure the security of the system output by adopting a retraced-collection mode; and the system security is guaranteed by generated check words, which are transmitted to a security monitor board by the CPUs, the security monitor board provides the electric power for an output board when the security monitor receives the correct security check words, otherwise the security monitor cuts off the power supply to the output board, thereby achieving fault-safety. Compared with the prior art, the invention can implement security protection for an onboard ATP during the calculating process, so that the risk probability of malfunction is lower than the design requirement of the system, and the operational security of the system is further ensured.

A railroad signal message system is provided. The system includes: an input circuit to receive railroad data from a railroad signaling device, an aspect converter operatively coupled to the input circuit to convert the railroad data into a machine-readable message that includes an indication of the railroad signaling device, and a message translator operatively coupled to the aspect converter to translate the message into a human-perceivable message.

The invention provides a data acquisition method and a data acquisition system for a railway signal, relates to the technical field of railway monitoring, and solves the technical problems that monitoring data of each railway signal monitoring system is scattered and cannot be concentrated and comprehensively used in the prior art. The method mainly comprises the following steps that: a railway signal acquisition server transmits a data request to a railway signal communication server; the railway signal communication server transmits a monitoring data request to the railway signal monitoring system according to the data request, and receives the monitoring data returned to the railway signal communication server according to respective original protocol formats; the railway signal communication server analyzes the received monitoring data in different protocol formats, integrates the analyzed monitoring data into monitoring data in a uniform format, and transmits the monitoring data in the uniform format to the railway signal acquisition server; and the railway signal acquisition server respectively processes the monitoring data in the uniform format according to the types of the monitoring data and stores the processed monitoring data in a database.

The invention relates to a rail transit diagnosis method and system based on a rough set. The method comprises the following steps: (1) collecting monitoring data of rail transit signal equipment and extracting the characteristics of the collected monitoring data so as to establish a fault diagnosis decision table, (2) based on the rough set, conducting knowledge extraction and attribute reduction on the fault diagnosis decision table so as to obtain a best attribute reduction combination, (3) establishing a neural network model, using the condition attribute in the best attribute reduction combination as input, using the decision attribute of the best attribute reduction combination as the output target of a neural network, and adopting the neural network for training, (4) using the trained neural network for calculating the possibility of a possible fault area of the real-time fault information, using the fault area largest in possibility as a fault diagnosis result and outputting the result. The rail transit diagnosis method can solve the problems that work load is large, efficiency is low, and risk performance is high when rail signal system failures are judged manually, and improves the efficiency and the accuracy of rail transit data analysis and failure diagnosis.

The invention relates to the technical field of automatic control systems of transportation railway signals, in particular to a monitoring and early warning system of a railway train and construction maintenance on the basis of a technology of Internet of Things. The monitoring and early warning system is characterized in that the monitoring and early warning system comprises mobile hand-held terminals which are provided for on-road construction machines, protectors, maintainers and constructors, the mobile hand-held terminals conduct positioning through beidou satellites, position information is transmitted to a railway geographical information system (GIS) data server of a construction maintenance command center through a communication server GSM-R, and data of the railway GIS data server are called by an application server at the construction maintenance command center to be analyzed; and the hand-held terminals of the on-road construction machines, the protectors and monitoring personnel are matched with each other, ineffective protection early warning is started when the effective protection distance is exceeded, and displaying is simultaneously conducted on display terminals of all the terminals through acoustic-optical signals. The monitoring and early warning system is safe and stable, ensures that the train normally operates and enables safety protection on construction of existing lines to be more scientific and more effective.

The invention discloses an evaluation method applied to the field of risk analysis of a railway signal system. The method comprises the steps of firstly, formulating the levels of risk of the railway system, expressing a cloud model for evaluating the levels of risk by a forward cloud generator of a MATLAB simulation software, and generating a standard risk grade evaluation set cloud model figure; marking the failure mode of a function by an expert according to the formulated levels of risk to obtain a risk factor set, and converting the risk factor set into a comprehensive evaluation matrix R; utilizing an analytic hierarchy process to obtain risk factor set weight coefficients corresponding to all parameters in the risk factor set by the expert, and calculating a comprehensive evaluation result cloud model figure by fuzzy synthetic operator; comparing the comprehensive evaluation result cloud model figure with the standard risk grade evaluation set cloud model figure to obtain the level of risk of the comprehensive evaluation result. After the method is adopted, the risk evaluation result is more objective and accurate.

The invention discloses a testing system and method for the interference resistance of cab signaling equipment, and belongs to the field of railway signaling. The testing system comprises upper computer control equipment and testing equipment, wherein the upper computer control equipment is used for automatically generating a testing sequence according to testing types selected by a user, calculating parameter values corresponding to the testing sequence, transmitting control commands to the testing equipment and judging the interference resistance of the tested cab signaling equipment according to received testing data, and the testing equipment is used for receiving the control commands transmitted by the upper computer control equipment, generating frequency mixing signals, outputting the frequency mixing signals to the tested cab signaling equipment, receiving the testing data returned by the tested cab signaling equipment and forwarding the testing data to the upper computer control equipment. By the testing system and method, the cab signaling equipment can be variously tested, the testing sequence can be automatically generated, the parameter values needed by testing are calculated, the cab signaling equipment is automatically tested, testing results and testing progress can be displayed in real time, the testing system is convenient to carry, and the testing operation process is simple.

The present invention discloses an improved method and system for verifying trackside conditions in safety critical railroad applications by reporting the status of trackside signals and switches to a remote train control system to confirm visual signals and control train movement. The system for verifying whether a trackside signaling electrical component is energized comprises a sensor for providing trackside conditions to a remote train control system electrically connected to a circuit for providing trackside conditions to a railroad interlocking adjacent to a trackside signaling electrical component, said sensor powered by voltage applied to said circuit such that said sensor is energized only when said electrical component is engaged. The fail safe method for sensing the status of an electrical component by powering the sensing means with voltage applied to a circuit when the electrical component is energized comprises electrically connecting a sensor to an electrical circuit associated with an electrical component, said circuit energized when said electrical component is engaged, said sensor adjacent to said electrical component; powering said sensor by voltage applied to said circuit such that said sensor is energized only when said electrical component is engaged; and indicating that said electrical component is engaged when sensor is energized by transmitting sensor status to a microprocessor.

The invention discloses an automatic test method and device for a temporary speed limit message of a train control center, relates to the technical field of railway signal system equipment testing, and mainly aims to realize automatic testing of the temporary speed limit message and improve the testing efficiency. According to the main technical scheme, the method comprises the following steps: generating a plurality of test cases with temporary speed limit messages by utilizing an engineering data table; sending the data in the test cases to a corresponding simulator one by one, wherein the simulator is used for simulating an external interface of the train control center, and the data of the test cases is sent to the train control center through the simulator; acquiring message data fedback by the train control center; and comparing the consistency of the fed-back message data and the temporary speed limit messages in the test cases, and recording test resultd and comparison resultof the test cases. The method and the device are used for automatically testing the temporary speed limit messages.

Disclosed is a railway signaling system for controlling a load. In accordance with the teachings of this invention, the system comprises a first autonomous controller and a second autonomous controller which is redundant with the first controller, each controller connectable to the load such that there is no single point of failure. The first and second controllers operable in either an on-line mode wherein both power outputs provide power to the load or an off-line mode wherein a single power output does not provide power to the load. On-line controllers monitor current therethrough. When both controllers are on-line, the current between the two controller is imbalanced up to a threshold limit, if the threshold limit is exceeded by one controller, that controller will go off line, and if the first controller is off-line and the second controller is on-line, the second controller monitors output voltages of the off-line controller to ascertain that the output voltages are zero.

The invention discloses system architecture of a comprehensive monitoring and maintaining system for railway electricity. The system architecture comprises all railway-signal monitoring equipment, integration communication monitoring equipment and railway electricity production managing system interfaces, and provides a comprehensive integrated monitoring and maintaining platform for the monitoring and the maintenance of railway electricity. The system architecture describes the whole system through the following four aspects: business architecture for describing the business level relation of the whole system, data architecture for describing the data flow of the whole system and the data storage relation, network architecture for describing the network building mode of the whole system, and security architecture for describing the security precautions of the whole system.

The invention relates to a security platform beside common rail in the field of railway signals. The security platform includes a principal subsystem MPS, a diagnosis and maintenance subsystem SDMS, a universal subsystem GGW and a redundant network, wherein the MPS, SDMS, GGW is respectively connected with the redundant network, the MPS is in controlling connection with the GGW which transfers external system data input to MPS, after processing the MPS executes safety verification and decides whether the external system data can pass or not. If the verification cannot pass, the MPS controls GGW to disconnect with the redundant network; if the verification can pass, the MPS sends the processing results to the GGW. Compared with the prior art, the security platform beside common rail in the field of railway signals has the advantages of being high in reliability and security and good in expansibility.

The invention discloses a device for monitoring railway foreign body intrusion by using a dynamic signal, and belongs to the field of disaster prevention and reduction of the foreign body intrusion in rail environment monitoring. In the method for monitoring railway foreign body intrusion, an alternating current signal is adopted, the voltage and power of an input signal and an output signal are monitored, and the signals are ensured not to lead in other signals to cause abnormal work of a power grid due to seton. The multi frequency point working mode of an audio signal ensures that a plurality of paths of power grid cable signals on the same power grid support frame work at different frequencies. If any key device in a drive loop goes wrong, a falling-object relay falls. Due to the adoption of a transformer isolation signal, DC isolation is realized between the interior and the exterior of a board, and the reliability and the safety of the circuit are improved. The AC dynamic mode foreign body sensor has higher safety and reliability than the DC mode foreign body sensor, and accords with guide safety principle of the field of railway signals.

The invention discloses a method for improving the security of a dynamic coding message of a train control system in the technical field of railway signal. The technical proposal of the method comprises the following steps: after a train control central system normally works, access way information, temporary speed restriction information and other data are received; if the received data is new, a 830 bit user message is generated; the 830 bit user message which is dynamically generated is compared with a message which is statically stored according to bit; if comparison results keep consistent, the dynamically generated 830 bit user message is coded according to a message coding algorithm and outputted to a side tracking electronic unit to take down the coded message to a history record list; if comparison results are not consistent for three times consecutively, the message is returned to a backup machine for further comparison; if comparison results on the backup machine are not consistent for three times consecutively, only a default message of the train control center is transmitted. The invention uses the static message to detect key parameters of the dynamic coding message so as to improve the message processing security of a responder based on dynamic coding technology.

The invention provides a semi-automatic electronic block instrument and a working method of the block instrument. The block instrument is composed of a communication board, a collection board, a drive board, a monitoring board, a communication board and two logic control boards which are connected via a CAN (Controller Area Network) bus, wherein each logic control board comprises two CPUs (Central Processing Units) which are connected in parallel and a comparer; the collection board is composed of collection relays BSAJ, SGAJ, FUAJ and JSBJ which are connected in parallel; and the monitoring board is connected with a computer monitoring system. The two logic control boards of the block instrument form a double 2-vote-2 redundant system, and seven block signals are transmitted via a cable to realize communication among stations, so that the block instrument occupies a small space, has a stable system, is convenient to mount and is suitable for emergency rescue of railway signals; the block instrument is compatible with an existing railway signal interlock system so that digital communication among the stations is increased; automatic block among the stations is realized via a pre-reserved axle counting interface; the upgrading and reconstruction are convenient; the maintenance is convenient; the system has a self-diagnostic function; and the communication among the stations is realized via the cable so that the communication has strong anti-jamming capability and is difficult to damage.

The invention relates to a computer interlocking system with a centralized control function. The computer interlocking system comprises a center interlocking subsystem, a server and a substation interlocking subsystem, wherein the center interlocking system is connected with the substation interlocking subsystem through the server, the center interlocking subsystem sends a center control command to the substation interlocking subsystem through the server, the substation interlocking subsystem sends station yard expression information to the center interlocking subsystem through the server, and the substation interlocking system and the server carries out data transmission by adopting an RSSP-I (Railway Signaling Security Protocol-I). Compared with the prior art, the computer interlocking system has the advantages of simple structure, high transmission safety, low equipment cost and the like.

The invention relates to the technical field of automatic control systems of transportation railway signals, in particular to a railway-signal integrated system experimental platform based on an analog simulation technology. The railway-signal integrated system experimental platform is characterized by comprising a central equipment subsystem, a station ground equipment subsystem, an on-site data simulation equipment subsystem and a vehicle-mounted equipment subsystem; data communications among all system components of all the subsystems are achieved through local area networks, a separate local area network is adopted by the central equipment subsystem and related equipment thereof for achieving data interactive communications, and one local area network is adopted by the station ground equipment subsystem, the on-site data simulation equipment subsystem and the vehicle-mounted equipment subsystem for achieving data interactive communications of all the subsystems. According to the railway-signal integrated system experimental platform, the manner of combining virtual simulation and real objects is adopted, an integrated and specialized platform used for learning, studying and developing a Chinese train operation control system is established, and the requirements of specialized teaching, training operation, research practice, technical exchange and technical cooperation are met.