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Communication apparatus, train network system, and method for setting network

A technology of a train network system and a communication device, which is applied in the field of communication devices and can solve problems such as inability to communicate smoothly

Active Publication Date: 2016-08-31
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] That is, in the case of adding a train or inserting a new car in the middle of the train, there is a problem that the network setting of the communication device installed in the car whose connection relationship has changed must be manually changed, otherwise the backbone network Communication in (hereinafter referred to as backbone communication) cannot be carried out smoothly

Method used

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  • Communication apparatus, train network system, and method for setting network
  • Communication apparatus, train network system, and method for setting network
  • Communication apparatus, train network system, and method for setting network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0027] figure 1 is a diagram showing a first configuration example of the train network system. figure 1 The shown train network system includes: the central device 10, HUB11 and equipment 12 arranged in No. 1 car; the HUB21 and equipment 22 arranged in No. 2 car; the terminal device 30, HUB31 and equipment installed in No. 3 car 32 and HUB33; HUB41 and equipment 42 installed in No. 4 car; terminal device 50, HUB51, equipment 52 and HUB53 installed in No. 5 car; and central device 60, HUB61 and equipment 62 installed in No. 6 car . In addition, each of the above-mentioned devices (central device, terminal device, HUB, equipment) has a communication function. The devices 12 , 22 , 32 , 42 , 52 , 62 are, for example, braking devices, display devices, air conditioning devices, lighting devices, and the like.

[0028] also, figure 1 The shown train network system is composed of a main transmission line (backbone network) passing between all cars, and a plurality of branch tran...

Embodiment approach 2

[0051] A train network system according to Embodiment 2 will be described. In addition, the structure of the train network system is the same as that of Embodiment 1 (refer to figure 1 ). In this embodiment, differences from Embodiment 1 will be described.

[0052] In Embodiment 1, the case where the HUB located on the boundary of the branch network A and B fails and is bypassed is described, but in this embodiment, the operation of the HUB when a new car is inserted in the middle of the train will be described. In addition, in the following description, the case where one car is inserted will be described, but the same applies to the case where a plurality of connected cars are inserted.

[0053] Figure 6 It is a diagram showing an example of a communication operation immediately after a new car is inserted at the boundary of the branch network. A HUB 71 and a device 72 are provided in the inserted compartment. Figure 7 It is a diagram showing an example of a communica...

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PUM

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Abstract

The present invention relates to a communication apparatus that operates as a hub in a train network system that comprises a plurality of hubs placed in train carriages, each of the plurality of hubs belonging to both a trunk network the signal transmission range of which is not limited and a branch network the signal transmission range of which is limited, each of the plurality of hubs adding, to a signal to be transmitted to another hub belonging to the same branch network as that hub, network type information indicating either a signal of the trunk network or a signal of the branch network. The communication apparatus transmits, at predetermined timings, branch network information (structure information) including at least identification information of the branch network to which the communication apparatus belongs, and further the communication apparatus determines, on the basis of branch network information received from an adjacent communication apparatus, whether to add the network type information to a signal to be transmitted to the adjacent communication apparatus.

Description

technical field [0001] The present invention relates to a train network system for realizing communication among various devices in a railway vehicle, and in particular to a communication device working as a center forming a network. Background technique [0002] Conventionally, when one transmission cable is allocated to each network, communication using a VLAN (Virtual Local Area Network: Virtual Local Area Network) is performed. For example, a network built in a train consists of a backbone transmission line passing through all cars, equipment in multiple cars, or more than one branch transmission line allocated according to the type of equipment, but in order to reduce costs and avoid cable Cabling is complicated, and sometimes a single physical transmission cable is used to build a car network that separates the backbone network from more than one branch network. [0003] For example, in Patent Document 1, a technology of VLAN is used to limit the transmission range (t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/40B60L15/42H04L12/28
CPCB60L15/42H04L2012/40293Y02T90/16B60L2200/26B61L15/0027B61L15/0036B61L15/0072H04L12/4645H04L67/12B61L15/0018B61L2205/00H04L12/4641
Inventor 本田新吾甲村哲朗辰巳尚吾泽卓也宫内隆史石丸祐介
Owner MITSUBISHI ELECTRIC CORP