135 results about "Train communication network" patented technology

The present invention relates to an electronic laboratory notebook system in a distributed communication network comprising: at least one application server running an electronic laboratory notebook server application; at least one client work-station running an electronic laboratory notebook client application in communication with the at least one application server via the distributed communication network, wherein said electronic laboratory notebook server application includes means to ensure the security of the data.

The invention discloses an Ethernet-based train communication network implementation method in the technical field of train communication. The Ethernet-based train communication network implementation method comprises the following steps of: setting a real-time virtual layer on a transport layer of a TCP/IP (Transmission Control Protocol/Internet Protocol) stack of Ethernet, and setting a real-time protocol layer on the real-time virtual layer, wherein the real-time virtual layer is used for realizing train real-time data communication required by IEC 61375-1 train communication network standards on the basis of COTS (Commercial Off The Shelf) Ethernet hardware, drive and the TCP/IP stack; establishing an Ethernet train communication network which comprises an Ethernet-based multifunctional train bus structure and an Ethernet-based wired train bus structure; and carrying out data communication according to a set communication organization manner. The Ethernet-based train communication network implementation method has the capability of preventing the hardware, drive and TCP/IP stack of the Ethernet from being corrected, meeting the hard real-time property and adapting to the requirement on future train control or train operation control.

The invention discloses a track traffic train traction brake system and method. The system comprises a central control system, a brake executing device and a traction control system, wherein the brake executing device and the traction control system are respectively connected to the central control system; the central control system comprises a brake control module which is used for controlling the execution of electropneumatic hybrid brake; the central control system receives a traction command and a brake command of trains from a train communications network, and starts the traction control system to control and execute the traction operation according to the received commands, or the brake control module is used for controlling the brake executing device and the traction control system to execute the electropneumatic hybrid brake. According to the method, the system is used for executing traction and brake. The track traffic train traction brake system disclosed by the invention has the advantages of being simple in structure, low in required cost, capable of executing brake control in real time, and high in electropneumatic hybrid precision and efficiency.

The utility model discloses a TCN gateway communication equipment, which is characterized in comprising a MCB module and a WTB module, wherein the MCB module comprises a 32-bit CPU, a MVB unit, a MVBCS01 protocol controller and an external periphery circuit. Supported by a Nucleus real-time operating system, a hardware platform is provided for operating a TCN net management software, a real-time protocol stack software and a MVB link protocol software. The WTB module comprises an 8-bit CPU processor, a WTBC protocol controller and an external periphery circuit, providing operating platform of the WTB link software. Data communication of process data of a destination port and a WTB source, monitoring data and/or message data of WTB is performed via the internal parallel bus between the MBC module and the WTB module. The utility model has the advantage of conformity to international train communication network TCN standard IEC61375-1, the most advanced equipment in TCN network and extensive application range in railway vehicle.

The invention relates to a control system of train sets, especially to a real-time network control system of train sets, which comprises at least two intelligent control nodes, wherein the intelligent control nodes comprise a master node and at least one slave nodes; the master node and the slave nodes are formed by dual-CAN (Controller Area Network) connecting and networking. The real-time network control system of the train sets in the invention takes references to the requirements of TCN (Train Communication Network) standards and combines the characteristics of the CAN network; and the dual-CAN based real-time control network of the train sets is realized by adopting the double-line CAN and carrying out a redundant switching and real-time communication control method, therefore the performance standards of a MVB (Multifunction Vehicle Bus) train set network can be reached and even exceeded; the characteristics of low cost, simplicity and practicability can be obtained; and the real-time control system is convenient to popularize, thereby enhancing the network informatization degree of national train set control systems.

The invention relates to a redundant design method for a multifunction vehicle bus (MVB) network system. The method is characterized in that an MVB redundancy loop type network and a fault detection protocol for MVBs (FDPM) are configured in the method; the MVB redundancy loop type network comprises an MVB primary equipment management node and slave equipment nodes, and the every two adjacent nodes are connected through two MVBs Line_A and Line_B; the FDPM comprises the MVB primary equipment management node and the slave equipment nodes, which are connected in series through links in sequence to form a FDPM looped network. The method is mainly applied to the MVB network communication system based on TCN (Train Communication Network) standards, can be used for reliably replacing the buses in real time according to the FDPM when the MVB redundant network system has a fault, has the characteristics of high design reliability, high practicality and good redundancy and fault tolerance performance, and is of great significance on reliability improvement of an MVB communication network.

The invention discloses a gateway redundancy control method and device in a TCN (Train Communication Network). The method comprises the steps of 1), setting two gateway devices in each locomotive in advance, wherein each of the two gateway devices is configured with an MVB (Multifunction Vehicle Bus) bus master device and an MVB bus backup master device; 2), carrying out TCN initial operation by the MVB bus master device and the MVB bus backup master device when each locomotive is electrified; 3), screening data of the MVB bus master device as WTB (Wire Train Bus) bus effective data; 4), switching to the backup master device when a fault occurs in the MVB bus master device and maintaining the WTB data if the initial operation is carried out. The device comprises a gateway configuration module, a double-gateway activation control module, a double-gateway communication control module and a redundancy switch control module. According to the method and the device, the operation state of each locomotive is prevented from being influenced when the gateway is switched; the reliability of the TCN is improved; and the method and the device have the advantages of simple control method, low required cost and high control realization efficiency.

The invention discloses a fault diagnosis device and a diagnosis method for a high-speed train braking system in the technical field of train operation control. The method includes acquiring and processing signals of operation states of the high-speed train braking system in real time; then obtaining diagnosis results of the operation states and sending the results to a ground subsystem; and the ground subsystem performing sort management and obtaining comprehensive diagnosis results for decision of maintenance policies. The system comprises a vehicle-mounted subsystem and a ground subsystem, wherein the vehicle-mounted subsystem comprises a sensor, an information pre-processing unit, a self diagnosis unit, a train communication network (TCN), a vehicle-mounted wireless transmission platform and a vehicle-mounted industrial Ethernet; and the ground subsystem comprises a ground wireless data access layer, a ground center analysis layer and a ground center comprehensive maintenance management decision-making layer. The fault diagnosis device and the diagnosis method can diagnose faults of the train braking system efficiently, rapidly and accurately, and a safeguard mechanism is provided for reliable operation of high-speed trains.

The invention discloses a device and a method to achieve an information-order communication network and a management communication network channel. The device comprises an element location control monolithic board which is connected through an Ethernet interface, and at least one optical interface monolithic board; the element location control monolithic board is used to accomplish a route agreement, and to process or transmit an Ethernet message; the optical interface monolithic board is used to insert and draw the expense of an optical signal, and to adapt and transmit the optical signal messages with different patterns. By utilizing the Ethernet technology, the ECC network management information-order and the ASON information-order of an optical transfer element location apparatus can share a data bus, a three-level exchanging unit which is realized through hardware is adopted to lighten the pressure of a C P U unit; a mass-storage high-speed S C N and M C N channels are realized in a transfer apparatus with minimum cost, the device and the method not only are compatible with the prior IP over PPP outer interface, but also provide the functions of big bandwidth, low C P U load, and bus repeat using, thereby providing the support of the stronger processing ability for realizing the intellectualization of the optical transfer apparatus.

The invention discloses a rail transit electric drive hydraulic brake control system.The rail transit electric drive hydraulic brake control system comprises an electronic brake control unit, a motor drive hydraulic device and a hydraulic brake.The electronic brake control unit receives brake instructions through a train communication network and allocates and controls braking force.The electronic brake control unit conducts data interaction with the motor drive hydraulic device through a brake intranet.The motor drive hydraulic device converts braking force requests into hydraulic signals which drive the hydraulic brake to finish actions.The rail transit electric drive hydraulic brake control system has the advantages of being simple and compact in structure, small in overall weight, high in pressure control precision, quick in control response and the like.

The invention provides a train network system. The train network system comprises a train communication network and Ethernet. The train communication network is used for transmitting first preset train network data, and the Ethernet is used for transmitting second preset train network data. By means of the train network system, the data transmission efficiency is improved.

The invention relates to the technical field of rail transit trains, and specifically relates to a rail transit traction brake fusion control system and a method applying the same. The system includescentral control systems of trailers and traction brake fusion control systems of bullet trains; the central control systems include central controllers; the traction brake fusion control systems include traction brake fusion controllers integrated with traction control modules and brake control modules, and brake executing devices and traction executing devices which are respectively connected tothe traction brake fusion controllers; and the traction brake fusion controllers receive traction or brake instructions sent by the central controllers through a train communication network or receive the traction or brake instructions sent by master controllers from a train hard wire, and respectively control the executing devices to execute traction and brake operation. As a control system canbe integrated through the individual traction control module and brake control module, data transmission between modules can be avoided, and the reliability and accuracy of the system can be enhanced.

The invention relates to a train backbone network and a train communication network. The train backbone network includes a plurality of wireless backbone nodes; two ends of each train section are respectively provided with a wireless backbone network node; the plurality of wireless backbone nodes comprise a top node; and when train initial running operation is carried out, the top node is configured to acquire the location information of the other wireless backbone nodes through a wireless communication network formed by the plurality of wireless backbone nodes and complete train initial running operation based on the location information of the top node itself. The train backbone network is realized through adopting wireless broadband technologies, and therefore, physical cables can be omitted, and poor contact of insertion pins of a connector, which is caused by repeated plugging and pulling out, can be effectively solved, the connection mode of the train backbone network can be simplified, the communication quality of the backbone network can be effectively ensured, and the reliability of the backbone network can be improved.

The invention provides a master control device and a data transmission method. The master control device comprises a Multifunction Vehicle Bus (MVB) printed circuit board, a central processing unit printed circuit board and an Ethernet printed circuit board, wherein the MVB printed circuit board is used for receiving first MVB data which are transmitted by a train communication network device, the central processing unit printed circuit board is connected to the MVB printed circuit board and is used for transmitting first MVB data to the Ethernet printed circuit board through an external device bus which is arranged between the central processing unit printed circuit board and the Ethernet printed circuit board, and the Ethernet printed circuit board is connected to the central processing unit printed circuit board and is used for converting first MVB data to isolated differential level signals and transmitting the isolated differential level signals to an Ethernet device. The master control device can process MVB data and Ethernet data and can meet the requirement of the simultaneous communication mode of the MVB and the Ethernet in a train communication network control system.

The invention discloses a braking force management system and method for railway vehicles. The system comprises a communication data acquisition unit, a central processing unit, a regulation and control center, a braking force distribution unit, a communication data conversion unit and a communication data mapping unit, wherein the communication data acquisition unit is responsible for acquiring state information of a vehicle and control data and state data of a traction system and a brake system from a train communication network, and the management system carries out vehicle total braking force calculation, traction system electric braking force distribution, braking system mechanical braking force distribution, electric braking/mechanical braking cooperation, distribution in the anti-skid and anti-idling control period and maintenance braking application control on all vehicles on a rail, all the components are brought into the braking force management category, and unified controlis carried out.

The invention discloses an EtherCAT Ethernet gateway and a working method thereof. The gateway comprises an EtherCAT bus protocol controller, an EtherCAT bus transceiver, a Nios II central controller, a Powerlink bus protocol controller, and a Powerlink bus transceiver, wherein the Nios II central controller is respectively connected to the EtherCAT bus protocol controller and the Powerlink bus protocol controller in two directions, and the Powerlink bus protocol controller is connected to the Powerlink bus transceiver in two directions. Through the Nios II central controller, the invention realizes the data exchange between the EtherCAT bus protocol controller and the Powerlink bus protocol controller, which solves the communication problem between the EtherCAT and Powerlink in a train communication network.

The invention provides a train network control system for a motor train unit with the speed of 250 km/h. The train network control system comprises a wired train bus (WTB), a multifunctional vehicle bus MVB, a main central control unit (CCU) corresponding to a traction unit, a main train communication network (TCN) gateway corresponding to the traction unit, a relay and MVB equipment of a vehicle, wherein the main TCN gateways of the traction units are connected through the WTB; the MVB equipment of the vehicle in one traction unit is connected through the MVB; the MVB comprises an MVB main chain and a plurality of MVB branches; the MVB equipment of the vehicles are respectively connected to the MVB branches; the main CCU is connected with the MVB branches of the main end vehicle; the MVB branches of the main end vehicle are connected with the main MVB equipment of the end vehicles; the main CCU comprises an input/output module; the main TCN gateway is also connected to the MVB branches of the main end vehicle; and the MVB branches are respectively connected with the MVB main chain through the relay. The reliability of the train network control system for the motor train unit with the speed of 250 km/h is improved, and the transmission time delay is reduced.

The invention relates to a train real-time Ethernet network card based on a Linux platform. The train real-time Ethernet network card comprises a core processing unit, a real-time Ethernet transceiver, a CAN interface, two UART interfaces and two common Ethernet transceivers, wherein the core processing unit is respectively connected with the two paths of common Ethernet transceivers, the real-time Ethernet transceiver, the CAN interface and the two paths of UART interfaces, and is integrated with VME backboard bus logic and interfaces; the core processing unit comprises an FPGA and an ARM loaded with a Linux platform and is used for achieving protocol conversion and data transmission between VME backboard data, CAN network data, UART network data and a TRDP network. The two paths of common Ethernet transceivers are in a hot standby redundancy relationship and are used for data redundancy sending scenes with high reliability requirements. By adopting the TRDP communication data processing method and device, high-reliability and high-real-time data processing of TRDP communication data can be achieved, and the requirements of a train communication network for real-time performance and reliability are met.

The invention discloses a file transmission method which is applied to train communication network. In the method, operational request information is sent to an opposite end device in a predetermined format. The operational request information comprises an operational code, a transmission mode and path information. When confirmation information which is returned by the opposite end device is received, the data message operation is implemented according to the operational request information. A file transmission device for the train communication network is also provided. According to the filetransmission method, five functions of uploading files, downloading files, searching for files or catalogues, deleting files and viewing occupied space of disks can be realized. On the train communication network, systematic files, configuration files and application files can be transmitted to other intelligent devices just by one intelligent device. The file transmission method is beneficial tothe maintenance of file systems of train equipment.

The invention provides a train communication network topology structure based on Ethernet, which comprises an Ethernet backbone network and an Ethernet marshalling network, wherein the Ethernet backbone network comprises a backbone network switch arranged in a dividing unit; the Ethernet marshalling network comprises a marshalling network switch arranged in each compartment; the marshalling network switches in the compartments in the dividing unit are mutually connected to form a ring network; a first central control unit in the dividing unit is connected with any marshalling network switch inthe dividing unit; the backbone network switch in the dividing unit is connected with any marshalling network switch in the dividing unit; and a subsystem device contained in each compartment is connected with the marshalling network switch also arranged in the compartment. The train adopts an ECN/ETB network, the control data and the passenger entertainment information data can share the Gigabitbandwidth, multi-network integration of control and entertainment can be realized, and the train wiring, equipment cost and equipment occupancy space can be greatly reduced.

The invention relates to single vehicle electric debugging equipment applied to rail transit vehicles, in particular to a single vehicle debugging test stand applied to a train and a debugging method used on the test stand. The debugging test stand at least comprises a simulation control unit, a network connecting unit, a display unit and a power supply which are communicated with each other, wherein according to the bugging test stand, different data are displayed through data conversion so as to accurately display the state of the detected unit. By using the technical scheme, the invention provides a single vehicle debugging test stand with relatively simple structure, high testing efficiency, accurate measuring result and intuitive feedback result and a debugging method used on the test stand; and by using a TCN (Train Communication Network) vehicle mounted network technology, single train vehicle electric debugging and partial function debugging of each sub system are achieved.

A process for handling downlink transmission to a User Equipment (UE) (10) from a Service Provider (3), said UE (10) being adapted to be associated with at least two Subscriber Identities Modules (SIM) respectively associated with a first and a second communication Network (1, 2), said process involving the steps of: - establishing (21) a first connection between said UE (10) and said first communication network (1); and - requesting (22) a second connection between said UE (10) and said second communication network (2) by issuing a specific command associated with a specific value or parameter representative of a request of switching between said first and second communication network the downlink transmission from said Service provider (3); - issuing (23) from said second communication network a specific request to said Service Provider (3) for establishing a new connection between said second communication network and the Service Provider and informing the service provider that a switching of network is requested by the UE; - transmitting (24) an acknowledgment from said Service Provider (3) to said second communication network (2) confirming the establishment of the connection between the second communication network and the SP (3) without starting data transfer through said second communication network (2); - transmitting (25) from the second communication network to the User Equipment (10) an acknowledgment related to said second communication network (2) and said Service Provider (3); - issuing (26) by said UE a request to said SP (3) to data communication, e.g. through said first communication network and the request being associated with a sequence number of a first packet to be communicated through said second communication network (2); - performing (27) data storage for said SP and said UE; - transmitting (28, 29) downlink data communication through said second communication network; - transmitting NACK/ACK messages (30, 31) to said SP through said second communication network; - transmitting (32) to said first communication network a request to release the connection issued by the Service Provider; - transmitting (33) a connection release between the UE and the first communication network.

The invention provides a PWM (Pulse Width Modulation) input module and MVB (Multifunction Vehicle Bus) equipment based on an MVB interface. The module comprises a processing unit, a control unit, a communication memory unit and a PWM converting unit, wherein the processing unit is connected with the control unit; the communication memory unit is respectively connected with the processing unit, the control unit and the PWM converting unit; the PWM converting unit converts acquired PWM signals into data signals and sends the data signals to the communication memory unit; the processing unit decodes data frames received from an MVB bus, and sends the decoded data corresponding to the main frame to the control unit; the control unit judges a sending port according to the decoded data corresponding to the main frame, and controls the communication memory unit to read the memorized data from the sending port to the processing unit; and the processing unit encodes the data and sends the data to the MVB bus. The invention improves the running reliability and the stability of a train under the condition of larger interference of the communication network site of the train, and reduces the cost of the equipment.

The invention relates to the technical field of train communication network control and particularly relates to an MVB class 4 device network card based on an FPGA and an ARM. The MVB class 4 device network card comprises an MVB network controller used for realizing the process data and message data functions of a physical layer and a link layer and configuration and management functions of the network card and upwardly providing a link layer software interface which is specified by a TCN network standard IEC61375-1, and an RTP protocol stack system used for realizing the monitoring data, process data and message data functions of a network layer, a transmission layer, a conversation layer, an expression layer and an application layer and upwardly providing an application layer software interface which is specified by the TCN network standard IEC61375-1. Through the mutual cooperation of the MVB network controller and the RTP protocol stack system, the process data, message data, user configurable and bus management functions and performance which are specified by IEC61375 are realized, and thus a situation that a core device depends on foreign procurement is eliminated.

The invention discloses a train communication network switching device based on the Ethernet. The train communication network switching device comprises an RS485 interface module, an M12 network interface module, a switching module, a CPU module and an SPI module, wherein the RS484 interface module is used for providing an interface for a device, with an RS485 interface, on a train, the M12 network interface module is used for providing a network interface for a train-mounted device of the train, the switching module is used for carrying out data information transmission and switching on data information received through the RS485 interface module and the M12 network interface module through a VLAN, the CPU module is used for configuring a register of the switching module to enable the switching module to achieve a tree generation protocol, the VLAN, flow control and a data priority, and the SPI module is used for providing register control channels for the CPU module and the switching module. By means of the train communication network switching device, the real-time performance of information data transmission and switching in a train communication network can be guaranteed.