JP2017103588A - Railway vehicle information transmission device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform operation without switching over the overall system if a failure occurs on an interface in a terminal device connected to an operation system.SOLUTION: A railway vehicle information transmission device 1 includes central transmission devices 10, 20 and a terminal device 30. The central transmission devices 10, 20 are connected in a daisy chain through switches 11, 110, and also connected in a daisy chain through switches 12, 210, to thereby configure an inter-vehicle network of ring topology. The terminal device 30 includes: a vehicle side interface 16 which performs data exchange with an equipment group 50; network interfaces 101, 102 connected to the inter-vehicle network; a CPU 103 which controls the vehicle side interface 16 and the network interface 101; a CPU 104 which controls the vehicle side interface 16 and the network interface 102; and a data sharing unit 105 which shares data between the CPUs 103, 104.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an information transmission apparatus for a railway vehicle mounted on a railway vehicle.

  Conventionally, in a railway vehicle information transmission apparatus, PROFINET (registered trademark) IO is applied, a duplexed control transmission system and a duplexed monitor transmission system are integrated, and the transmission paths of each system are made common and single. The network configuration is known (see, for example, Patent Document 1). In the duplex control / monitor transmission system, when both systems are healthy, the first control / monitor transmission system operates, and the second control / monitor transmission system operates as a standby system.

  The control / monitor transmission system is logically composed of an IO controller of the central transmission device and a network interface of the terminal device of each vehicle, and the network interface operates as an IO device.

  The transmission lines of the first control / monitor transmission system and the second control / monitor transmission system form a ring topology, and can cope with failures such as partial disconnection of the transmission line. And in order to respond | correspond to a ring topology, the switch of a central transmission apparatus and the switch of each vehicle have a function corresponding to MPR (Media Redundant Protocol), for example.

  Here, the switch of the central transmission apparatus of the first control / monitor transmission system operates as an MPR redundancy master, and the other switches operate as redundancy clients. The redundancy master sends a test frame at a certain period to check whether the ring topology of the network is healthy, and switches the data frame transfer route when the sent test frame cannot be received. I do. That is, when a failure occurs in any of the elements constituting the first control / monitor transmission system, the second control / monitor transmission system is switched to the active system, and the first control / monitor transmission system is on standby. Become a system.

  For the above switching operation, each control / monitor transmission system needs to monitor the state of the other party. Therefore, periodic data exchange based on UDP is performed between the IO controller of the central transmission device of the first control / monitor transmission system and the IO controller of the central transmission device of the second control / monitor transmission system. When the CPU of the central transmission device of the second control / monitor transmission system inspects the contents of the UDP packet received from the CPU of the central transmission device of the first control / monitor transmission system and detects an abnormality, or If a UDP packet cannot be received for a certain period of time, it operates as an active system.

Japanese Patent Laying-Open No. 2015-65498

  However, in the conventional railway vehicle information transmission device, the data transmitted and received by the central transmission device is limited to the data through the interface of the terminal device connected to the same system, and the first control transmission system and the second control transmission system Even when an abnormality occurs in an interface in one of the terminal devices of the control transmission system, the entire control transmission system to which the terminal device belongs is regarded as abnormal, and the control transmission system must be switched.

  An object of the present invention made in view of such circumstances is that even when a failure occurs in an interface in a terminal device connected to an active system, it is not necessary to switch the entire system, and the availability of the entire system can be improved. An information transmission apparatus for railway vehicles is provided.

  In order to solve the above problems, a railway vehicle information transmission device according to the present invention is a railway vehicle information transmission device mounted on a railway vehicle, and a first system central transmission device installed in a leading vehicle; A central transmission device of the second system mounted on the last vehicle, and a terminal device installed on the leading vehicle, the last vehicle, and one or more intermediate vehicles. The central transmission device of the second system is daisy chain connected via a switch of the first system and daisy chain connected via a switch of the second system to form an inter-vehicle network based on a ring topology as a whole. The terminal device includes a vehicle-side interface for exchanging data with a group of devices connected to the terminal device, and a first network connected to the inter-vehicle network. An interface and a second network interface; a first CPU that controls the vehicle interface and the first network interface; and a second system that controls the vehicle interface and the second network interface. And a data sharing unit for sharing data between the first system CPU and the second system CPU.

  Furthermore, in the railway vehicle information transmission apparatus according to the present invention, the first system central transmission apparatus includes a first system IO controller, and the second system central transmission apparatus includes a second system IO controller. The first system IO controller is a PROFINET IO controller, the first system network interface is a PROFINET IO device to form a first PROFINET IO network, and the second system IO controller is a PROFINET IO controller. The second PROFINET IO network is configured by using the second network interface as a PROFINET IO device.

  According to the present invention, the operating system of the interface in the terminal device can be controlled for each terminal device independently of the operating system of the central transmission device. Therefore, when a failure occurs in the active interface in any one of the terminal devices constituting the first system, it becomes possible to switch to the standby interface.

It is a block diagram which shows schematic structure of the information transmission apparatus for rail vehicles which concerns on one Embodiment of this invention. It is a block diagram which shows schematic structure of the terminal device with which the information transmission apparatus for rail vehicles which concerns on one Embodiment of this invention is provided.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing a schematic configuration of a railway vehicle information transmission apparatus according to an embodiment of the present invention. The railway vehicle information transmission device 1 is mounted on a rail vehicle and is sent from a control information of a master controller (master controller) installed in a leading vehicle or an ATO (Automatic Train Operation) device. The information is transmitted to each device installed in each vehicle, and the operation state of each device is collected, and the information is collected and displayed on a display device installed in the leading vehicle.

  The example of FIG. 1 shows a case where the railway vehicle has a six-car train, and the railway vehicle information transmission device 1 is a first-system central transmission device installed in a leading vehicle (the first car) that is a control vehicle. 10, the central transmission device 20 of the second system installed in the last vehicle (No. 6 vehicle) that is a control vehicle, terminal devices 30 (30-1 to 30-6) installed in each vehicle, and each vehicle The first system switch 11 (11-1 to 11-6) installed in the vehicle and the second system switch 12 (12-1 to 12-6) installed in each vehicle. Note that the first system switch 11 and the second system switch 12 may be included in each terminal device 30.

  The railway vehicle information transmission apparatus 1 applies, for example, PROFINET IO, integrates a duplicated control transmission system and a duplicated monitor transmission system, and shares a transmission path of each system to form a single network configuration. To do. In the present specification, one of the first system and the second system means an active system, and the other means a standby system.

  FIG. 1 also shows a device group 50 (50-1 to 50-6) and device-side interfaces 40 (40-1 to 40-6) installed in each vehicle. Moreover, as an example of each device provided in the device group 50, a control circuit, an air conditioner, a door control device, and the like are illustrated.

  The device-side interface 40 includes a first-system device-side interface 401 (401-1 to 401-6) and a second-system device-side interface 402 (402-1 to 402-6).

  The first system central transmission apparatus 10 includes a first system switch 110, a first system IO controller 111, and a first system CPU 112. The second system central transmission device 20 includes a second system switch 210, a second system IO controller 211, and a second system CPU 212.

  The transmission lines a1 to a14 of the control / monitor transmission system of the first system and the control / monitor transmission system of the second system form a ring topology, and are configured to cope with failures such as partial disconnection of the transmission line. Generally, Ethernet (registered trademark) cables are used for the transmission paths a1 to a14.

  The central transmission device 10 of the first system, the first system switch 11 of each intermediate vehicle, and the central transmission device 20 of the second system are daisy chain connected to each other via the transmission lines a1 to a7, and the second system. The central transmission device 20, the second system switch 12 of each intermediate vehicle, and the first system central transmission device 10 are daisy chain connected to each other via transmission paths a 8 to a 14, and as a whole, between vehicles based on a ring topology. Configure the network.

  The first system switch 110 of the first system central transmission device 10, the second system switch 210 of the second system central transmission device 20, the first system switch 11 of each vehicle, and the second of each vehicle. The system switch 12 has a function corresponding to, for example, MPR (Media Redundant Protocol) in order to correspond to the ring topology.

  Here, the first system switch 110 of the first system central transmission apparatus 10 operates as an MPR redundancy master, and the other switches operate as redundancy clients. In order to check whether the ring topology of the network is healthy, the redundancy master (the first system switch 110) sends a test frame at a fixed period, and if it cannot receive the sent test frame, the data frame The process of switching the transfer route is performed.

  FIG. 2 is a block diagram illustrating a schematic configuration of the terminal device 30. Each terminal device 30 includes a first system network interface (PROFINET interface) 101, a second system network interface 102, a first system CPU 103, a second system CPU 104, a data sharing unit 105, a vehicle side And an interface 106.

  The control / monitor transmission system is duplexed, and the control / monitor transmission system of the first system is logically the IO controller 111 of the central transmission device 10 of the first system and the network interface of the first system of each terminal device 30. 101, the IO controller 111 operates as a PROFINET IO controller, the first system network interface 101 operates as an IO device, and configures a first PROFINET IO network as a whole and exchanges data with each other.

  Similarly, the control / monitor transmission system of the second system is logically composed of the IO controller 211 of the central transmission device 20 of the second system and the network interface 102 of the second system of each terminal device 30. 211 operates as a PROFINET IO controller, and the network interface 102 operates as an IO device, forms a second PROFINET IO network as a whole, and exchanges data with each other. In the duplex control / monitor transmission system, when both systems are healthy, the control / monitor transmission system of the first system operates, and the control / monitor transmission system of the second system operates as a standby system.

  The first system CPU 103 controls the first system network interface 101 and the vehicle-side interface 106. The second system CPU 104 controls the second system network interface 102 and the vehicle-side interface 106.

  The first network interface 101 constitutes a first transmission system between vehicles. The second network interface 102 constitutes a second transmission system between vehicles.

  The data sharing unit 105 is a memory that shares data between the first system CPU 103 and the second system CPU 104.

  The vehicle-side interface 106 includes a first system interface and a second system interface. Then, signal input / output between the first system CPU 103 and the second system CPU 104 and the device group 50 is controlled. As an interface between the terminal device 30 and the device group 50, digital input / output, analog input / output, PWM signal input / output, serial transmission, and the like are assumed. Therefore, the vehicle-side interface 106 has an input / output circuit corresponding to the interface type of each target device.

  When the data sharing unit 105 is not provided as in the railway vehicle information transmission device described in Patent Document 1, the terminal device 30 includes the first system central transmission device 10 and the first system device-side interface 401. Data is exchanged with each device group 50 connected to the second system, and data is exchanged between the second system central transmission device 20 and each device group 50 connected to the second system device side interface 402. Exchange.

  On the other hand, since the railway vehicle information transmission device 1 according to the present invention includes the data sharing unit 105, the terminal device 30 includes a first system CPU 103 that controls the first system network interface 101, and a second system network. Transmission data can be exchanged with the CPU 104 of the second system that controls the interface 102. Therefore, the terminal device 30 can relay data exchange between the central transmission device 10 of the first system and each device group 50 connected to the device-side interface 402 of the second system. Data exchange between the central transmission device 20 of the system and each device group 50 connected to the device-side interface 401 of the first system can be relayed.

  As a result, the operating system of the interface in the terminal device 30 can be switched independently of the operating system of the central transmission devices 10 and 20 (that is, controlled for each terminal device 30). Therefore, when a failure occurs in the vehicle-side interface 16 in any one of the terminal devices 30 constituting the first system, the vehicle side is determined by a command from the central transmission device 10 or 20 or the determination of the terminal device 30 itself. The interface 16 can be switched from the first system to the second system.

  Although the above embodiment has been described as a representative example, it will be apparent to those skilled in the art that many changes and substitutions can be made within the spirit and scope of the invention. Therefore, the present invention should not be construed as being limited by the above-described embodiments, and various modifications and changes can be made without departing from the scope of the claims. For example, a plurality of constituent blocks described in the embodiments can be combined into one, or one constituent block can be divided.

DESCRIPTION OF SYMBOLS 1 Railway vehicle information transmission device 10 First system central transmission device 11 First system switch 12 Second system switch 20 Second system central transmission device 30 Terminal device 40 Device side interface 50 Device group 101 First system Network interface 102 Second system network interface 103 First system CPU
104 CPU of the second system
105 Data Sharing Unit 106 Vehicle Side Interface 110 First System Switch 111 First System IO Controller 112 First System CPU
210 Second system switch 211 Second system IO controller 212 Second system CPU
401 Device side interface of first system 402 Device side interface of second system

Claims (2)

A railway vehicle information transmission device mounted on a railway vehicle,
A central transmission device of the first system installed in the leading vehicle;
A second central transmission device mounted on the last vehicle;
A terminal device installed in the top vehicle, the last vehicle, and one or more intermediate vehicles;
With
The central transmission device of the first system and the central transmission device of the second system are daisy chain connected via a switch of the first system and daisy chain connected via a switch of the second system. Configure a vehicle-to-vehicle network based on topology,
The terminal device
A vehicle-side interface for exchanging data with a group of devices connected to the terminal device;
A first network interface and a second network interface connected to the inter-vehicle network;
A first system CPU for controlling the vehicle side interface and the first system network interface;
A second CPU for controlling the vehicle-side interface and the second network interface;
A railcar information transmission device comprising: a data sharing unit for sharing data between the first system CPU and the second system CPU. The central transmission device of the first system has an IO controller of the first system,
The second system central transmission device has a second system IO controller,
The first system IO controller is a PROFINET IO controller and the first system network interface is a PROFINET IO device to form a first PROFINET IO network;
2. The railway vehicle information according to claim 1, wherein the second system IO controller is a PROFINET IO controller, and the second system network interface is a PROFINET IO device to form a second PROFINET IO network. Transmission equipment.

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