CN103685075A

CN103685075A - Coaxial interconnection exchanger

Info

Publication number: CN103685075A
Application number: CN201310615419.3A
Authority: CN
Inventors: 徐惠萍; 刘晓华; 薛伟明; 王宏雷; 贾瑞
Original assignee: Yi Cheng (suzhou) Intelligent System Co Ltd
Current assignee: Suzhou Huaqi Intelligent Technology Co ltd
Priority date: 2013-11-28
Filing date: 2013-11-28
Publication date: 2014-03-26
Anticipated expiration: 2033-11-28
Also published as: CN103685075B

Abstract

The invention relates to a coaxial interconnection exchanger. The exchanger mainly comprises a power module, two signal switching modules, an exchanging module and a control module, wherein the power module supplies power for the other modules by using a power circuit; the signal switching modules are connected with the exchanging module by medium independent interfaces; and the exchanging module is connected with the control module through a control interface. By the technical scheme, software of the signal switching modules is automatically negotiated regardless of a local side mode or a terminal mode; a peer-to-peer network structure is established; and an Ethernet network of a whole train can be established without changing the existing line of the train and by using the existing coaxial cables or twisted-pair lines of the train.

Description

A kind of co-axial interconnect switch

Technical field

The present invention relates to utilize the existing coaxial or twisted-pair cable of train to set up the ethernet network of full train, be specifically related to a kind of co-axial interconnect switch.

Background technology

The not reserved netting twine of existing train, can not set up ethernet network by the conventional network switch, carries out the application service of IP based network.This product will be realized by the existing coaxial cable of train or twisted-pair feeder, realizes switch interconnected, sets up ethernet network, carries out the application service of IP based network.Existing product and the technology of setting up Ethernet based on coaxial or twisted-pair feeder, a coaxial cable or twisted-pair feeder media interface are only provided, with this series products, set up Ethernet, can only realize the network configuration of point-to-point or point-to-multipoint, can not realize bus-type Ethernet structure and loop ethernet structure.This application, signal transmission is subject to the restriction of cable loss, is not suitable with the large or unsettled occasion of cable loss of distance range, is not suitable for this application scenario of train.

Summary of the invention

The object of the invention is to overcome the problem that prior art exists, utilize the existing coaxial or twisted-pair cable of train to set up the ethernet network of full train, a kind of co-axial interconnect switch is provided.

For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention is achieved through the following technical solutions:

A kind of co-axial interconnect switch, switch system is mainly by a power module, two signal conversion module, a Switching Module and a control module form, described power module is other module for power supply by power circuit, described signal conversion module connects described Switching Module by medium independent interface, and described Switching Module connects described control module by control interface.

Further, described signal conversion module comprises: described signal conversion module comprises: by one group of blender, low pass filter one, coupler one, radio frequency processing chip one, signal conversion chip one, internal memory one and program storage device one and another, organize two radio frequency links that described blender, low pass filter two, coupler two, radio frequency processing chip two, signal conversion chip two, internal memory two and program storage device two form respectively.

Preferably, described in each, signal conversion module has independently processing unit and software, and the hardware and software of all described signal conversion module equipment is all identical, regardless of local side and terminal.

Further, described Switching Module core is chips of Ethernet exchange, on described exchanger chip, be respectively arranged with medium independent interface and ethernet physical layer phy interface, described signal conversion module is connected with the medium independent interface of Switching Module by standard, described ethernet physical layer phy interface converts network interface to by network transformer, and described control module is controlled described exchanger chip by MDC interface and MDIO interface.

The invention has the beneficial effects as follows:

Adopt technical solution of the present invention, regardless of local side and terminal pattern, the software of each signal conversion module, auto negotiation, set up peer network architecture, utilize the existing coaxial cable of train or twisted-pair feeder can set up the ethernet network of full train without change train existing line.

Accompanying drawing explanation

Fig. 1 is system configuration schematic diagram of the present invention;

Fig. 2 is that signal conversion module forms structure chart;

Fig. 3 is that Switching Module forms structure chart;

Number in the figure explanation: 1, power module, 11, power circuit, 12, power circuit, 13, power circuit, 13 and power circuit, 2, signal conversion module, 21, signal conversion module one, 22, signal conversion module two, 201, blender, 202, low pass filter one, 203, coupler one, 204, radio frequency processing chip one, 205, signal conversion chip one, 206, internal memory one, 207, program storage device one, 208, low pass filter two, 209, coupler two, 210, radio frequency processing chip two, 211, signal conversion chip two, 212, internal memory two, 213, program storage device two, 23, cable, 24, cable, 3, Switching Module, 31, exchanger chip, 32, network transformer, 33, network interface, 34, phy interface, 35, MDC interface, 36, MDIO interface, 4, control module, 41, control interface, 5, medium independent interface.

Embodiment

Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.

Shown in Fig. 1, a kind of co-axial interconnect switch, switch system is mainly comprised of 2, one Switching Modules 3 of 1, two signal conversion module of a power module and a control module 4.

Continuation is with reference to Fig. 1; two described signal conversion module 2 are respectively structure same signal modular converter 1 and signal conversion module 2 22; the operation that described power module 1 is described signal conversion module 1, Switching Module 3 control modules 4 and signal conversion module 2 22 by power circuit 11, power circuit 12, power circuit 13 and power circuit 14 respectively provides reliable power supply; described power module 1 of the present invention is responsible for 110V direct current DC to convert the required 12V direct current DC of other module and 5V direct current DC to, and overcurrent, overvoltage protection are provided.

Shown in Fig. 2, described signal conversion module 2 adopts the ethernet signal EOC based on twisted-pair feeder or coaxial cable transmission.Two road radio frequency rf signals are respectively by cable 23 and cable 24 inputs, one tunnel is through blender 201, low pass filter 1, low pass filter 2 208 and coupler 1, after coupler 2 209 is processed, pass to radio frequency processing chip 1, after one 204 pairs of analog signals amplifications of described radio frequency processing chip and filtering, giving described signal conversion chip 1 processes, another road is through blender 201, after low pass filter 2 208 and coupler 2 209 are processed, pass to radio frequency processing chip 2 210, after 2 210 pairs of analog signals amplifications of described radio frequency processing chip and filtering, giving described signal conversion chip 2 211 processes, the interface of the Ethernet of described signal conversion module 2 adopts the medium independent interface 5 of standard and the medium independent interface 5 of described Switching Module 3 to dock.

Shown in Fig. 3, described Switching Module 3 cores are chips of Ethernet exchange 31, described exchanger chip 31 provides respectively medium independent interface 5 and ethernet physical layer phy interface 34, and described signal conversion module 2 is connected with the medium independent interface 5 of Switching Module 3 by standard; Described ethernet physical layer phy interface 34 converts network interface 33 to by network transformer 32, and described control module 4 is controlled described exchanger chip 31 by MDC interface 35 and MDIO interface 36, realizes the various functions of switch.

This switch system also comprises other building block except the components and parts that show in Fig. 1 to Fig. 3 in addition, building block such as described control module 4: processor, internal memory DDR and program storage device FLASH etc., described control module 4 can arrange or configure described Switching Module 3 by MDC interface 35, MDIO interface 36, realize various types of network functions, described control module 4 can also realize Network Management Function and fault diagnosis functions.

Principle of the present invention:

Article two, radio frequency link adopts the technology of signal stack, realizes the synthetic of signal and distributes, and radio frequency link is realized the redundancy feature of signal multiplication and link; In data link layer, two data link adopt load-balancing technique, realize link failure seamless switching and bandwidth multiplication function.Each signal conversion module has independent processing unit and software, and the hardware and software of all signal conversion module equipment is all identical, regardless of local side and terminal pattern, when building network, the software of each signal conversion module, auto negotiation, sets up peer network architecture.

The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims

1. a co-axial interconnect switch, is characterized in that: switch is mainly by a power module (1), two signal conversion module (2), and a Switching Module (3) and a control module (4) form;

Described power module (1) is other module for power supply by power circuit;

Described signal conversion module (2) realizes based on coaxial or the ethernet signal EOC of twisted-pair cable transmission and the mutual conversion of medium independent interface signal, and connects described Switching Module (3) by medium independent interface (5);

Described Switching Module (3) is realized between signal conversion module, between this car switch ports themselves and signal conversion module, the exchange of the Ethernet data between this car switch ports themselves;

Described control module (4) connects described Switching Module (3) by control interface (41), and described control interface (41) is MDC interface (35) and MDIO interface (36).

2. co-axial interconnect switch according to claim 1, it is characterized in that: described signal conversion module (2) comprising: respectively by one group of blender (201), low pass filter one (202), coupler one (203), radio frequency processing chip one (204), signal conversion chip one (205), internal memory one (206) and program storage device one (207) are organized described blender (201) with another, low pass filter two (208), coupler two (209), radio frequency processing chip two (210), signal conversion chip two (211), two radio frequency links that internal memory two (212) and program storage device two (213) form.

3. co-axial interconnect switch according to claim 3, it is characterized in that: signal conversion module described in each (2) has independently processing unit and software, the hardware and software of all described signal conversion module (2) equipment is all identical, regardless of local side and terminal.

4. co-axial interconnect switch according to claim 1, it is characterized in that: described Switching Module (3) core is chips of Ethernet exchange (31), on described exchanger chip (31), be respectively arranged with medium independent interface (5) and ethernet physical layer phy interface (34), described signal conversion module (2) is connected with the medium independent interface (5) of Switching Module (3) by standard, described ethernet physical layer phy interface converts network interface (33) to by network transformer (32), described control module (4) is controlled described exchanger chip (31) by MDC interface (35) and MDIO interface (36).