CN210007703U

CN210007703U - railway team communication system

Info

Publication number: CN210007703U
Application number: CN201921134066.4U
Authority: CN
Inventors: 凌政; 罗志维; 胡兵
Original assignee: Guangzhou Forget Ping Mdt Infotech Ltd
Current assignee: Guangzhou Forget Ping Mdt Infotech Ltd
Priority date: 2019-07-18
Filing date: 2019-07-18
Publication date: 2020-01-31
Anticipated expiration: 2029-07-18

Abstract

The utility model discloses a railway teams and groups communication system, including access device, optical network unit, beam splitter and router, access device distributes the teams and groups along the railway, the beam splitter sets up the communication machine room along the railway, the router sets up the communication machine room along the railway, access device passes through RJ45 interface connection to optical network unit, optical network unit passes through SC interface connection to beam splitter, the beam splitter is connected to the router through GE light mouth.

Description

railway team communication system

Technical Field

The utility model belongs to the technical field of communication system technique and specifically relates to kinds of railway teams and groups communication system.

Background

The current railway station section access system has insufficient bearing capacity and insufficient coverage, and part of the station sections still adopt a cable + modem mode to temporarily solve the problem of urgent need of service channels and cannot meet the application requirements of railway safety production.A networking structure and an equipment technical system are not unified and are not suitable for railway development.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiment of the present invention provides types of high-bandwidth and low-latency railway team communication systems.

The embodiment of the utility model provides kinds of railway teams and groups communication system, including access device, optical network unit, beam splitter and router, access device distributes at the teams and groups along the railway, the beam splitter sets up the communication machine room along the railway, the router sets up the communication machine room along the railway, access device passes through RJ45 interface connection to optical network unit, optical network unit passes through SC interface connection to beam splitter, the beam splitter is connected to the router through GE light mouth.

And step , performing signal transmission between the optical network unit and the optical splitter through the 12-core optical fiber.

And step , performing signal transmission between the access equipment and the optical network unit through the 24-core optical fiber.

At step , the access devices include video devices, audio devices, automated phones, and sensor devices.

Further , the number of routers is not only .

The utility model provides an above-mentioned technical scheme in the embodiment of the utility model have the following advantage that the utility model discloses a railway team communication system includes access equipment, optical network unit, beam splitter and router, and team communication system's optical network unit distributes along the railway for various types of terminal access of team, and beam splitter equipment distributes in the communication machinery room along the railway, is used for compiling the optical network unit along the line, and router equipment distributes in the communication machinery room, is used for docking communication's backbone communication network, the utility model is suitable for a network access in the railway long-range area along the line can provide high bandwidth, the low time delay system network deployment mode, and the structure is clear, maintains simply.

Drawings

Fig. 1 is a block diagram of the overall networking structure of the types of railway team communication systems of the present invention;

fig. 2 is a schematic diagram of the data downlink communication principle of the present invention;

fig. 3 is a schematic diagram of the data uplink communication principle of the present invention.

Detailed Description

Referring to fig. 1, the utility model provides an kinds of railway teams and groups communication system, including access device, optical network unit, beam splitter and router, the access device distributes at the teams and groups along the railway, the beam splitter sets up the communication machine room along the railway, the router sets up the communication machine room along the railway, access device passes through RJ45 interface connection to optical network unit, optical network unit passes through SC interface connection to beam splitter, the beam splitter passes through GE optical interface connection to router.

The optical network units of the team communication system are distributed along the railway and are used for accessing various types of terminals of teams;

the optical splitter equipment is distributed in communication mechanical rooms along the railway and is used for collecting optical network units along the railway;

the router equipment is distributed in the communication mechanical room and is used for docking a backbone communication network for communication;

the optical network units of the teams and groups can support various different types of access equipment such as videos, voice and data, meanwhile, the optical network units have access extending to various equipment signals, are suitable for network access in remote areas along a railway, can provide a high-bandwidth low-delay system networking mode, and are clear in structure and simple to maintain.

As a preferred embodiment, the optical network unit and the optical splitter transmit signals through 12-core optical fiber.

Specifically, the optical splitters of this embodiment are distributed in the communication machine room along the line, collect the signals of the optical network units on the lower layer, and because the distance is long, the optical fibers are used in the middle for transmission, and meanwhile, 12-core optical fibers are used for connection in order to ensure that the links are reliably connected.

As a preferred embodiment, the signal transmission between the access device and the optical network unit is carried out by 24-core optical fiber.

Specifically, this embodiment the access device mainly distributes at the team along the railway for all kinds of terminal access, be connected through optic fibre and communication machine room and carry out data transmission, for reliability and expansibility, adopt 24 core optic fibres to dock.

the access devices include video devices, audio devices, automatic telephones, and sensor devices as preferred embodiments.

step is taken as a preferred embodiment, the number of routers is not only .

Specifically, the router described in this embodiment converges optical signals for a lower layer in a communication mechanical room, and connects a backbone communication network to the outside through an optical port to implement interconnection of different service data.

In conclusion, the invention realizes the networking connection of the railway team communication by utilizing the passive optical communication technology, the data communication technology and the like.

As shown in fig. 2, based on the utility model discloses a railway team communication system, its advantage of downlink transmission communication lies in:

1. the OLT performs point-to-multipoint broadcast transmissions to the OUN devices.

2. All ONUs can receive the same data, but the data of different ONUs is distinguished by the geoport ID, and the ONUs receive the data belonging to themselves by filtering.

3. And the user receives the data packet belonging to the user and discards the data packet not belonging to the user.

As shown in fig. 3, based on the utility model discloses a railway team communication system, its advantage of ascending transmission communication lies in:

1. and collision detection and avoidance are realized through ranging.

2. Data is transmitted in time slots belonging to itself.

3. The optical signals are coupled at the optical splitter.

While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.

Claims

The railway team communication system is characterized by comprising access equipment, an optical network unit, an optical splitter and a router, wherein the access equipment is distributed in teams along a railway, the optical splitter is arranged in a communication mechanical room along the railway, the router is arranged in the communication mechanical room along the railway, the access equipment is connected to the optical network unit through an RJ45 interface, the optical network unit is connected to the optical splitter through an SC interface, and the optical splitter is connected to the router through a GE optical port.
2. The types of railroad team communication system of claim 1, wherein the optical network units and the optical splitters perform signal transmission therebetween through 12-core optical fibers.
3. The types of railroad team communication system of claim 1, wherein the signal transmission between the access device and the ONU is performed through 24-core optical fiber.
4. The railroad team communication system of claim 1, wherein the access devices include video devices, audio devices, automated phones, and sensor devices.
5. The types of railroad team communication system of claim 1, wherein the number of routers is not only .