CN207801989U - A kind of interchanger of long range Industrial Ethernet transmission - Google Patents

Abstract

The utility model discloses a kind of interchangers of long range Industrial Ethernet transmission, and the interchanger includes power module, Cortex A9 CPU, SWITCH, PHY, logic chip, control port and service port；It is characterized in that, the PHY is BroadR Reach PHY, the BroadR Reach PHY establish data with the MAC layer of interchanger and communicate, and interface form between the two is S3MII.The interchanger of the utility model is the industrial switch based on BroadR Reach actuation techniques, its advantage is that：It is not necessary that extras repeater exchanger, fiber optical transceiver and optical cable is added, pass through common CAT5 cable transmissions 100Mbps Ethernets, transmission range as far as 500 meters, have reduce network transfer delay, it is cost-effective, facilitate the advantages such as field wiring and stable and high effective operation.

Description

A kind of interchanger of long range Industrial Ethernet transmission

Technical field

The utility model belongs to ethernet communication field, and in particular to a kind of exchange of long range Industrial Ethernet transmission Machine.

Background technology

In the application of current ethernet communication, either CAT3 cables of 10Mbps transmission rates, the transmitting pin of the cable Rate 16MHz is mainly used for 10base-T for voice transfer and maximum transmission rate for the data transmission of 10Mbps；Still The transmission frequency of the CAT5e cables of 100Mbps transmission rates, the cable is 100MHz, and with decaying, small, crosstalk is few, and has There are more high s/n ratio, smaller time delay, performance to be greatly improved；The even Class 6 cable of 1000Mbps transmission rates, transmission Frequency is 250MHz, is suitable for the application of gigabit Ethernet.This few class cable has the common ground, farthest effective propagation path to be 100 meters.In industrial comprehensive wiring specification, horizontal wiring is also distinctly claimed no more than 90 meters, link total length is no more than 100 meters.That is, 100 meters are a limit for wired ethernet, this limit is from interchanger to hub equipment Or the linkage length of terminal device.General communication distance is more than after 100 meters, and network cable transmission will be unstable, IEEE802.3 it So the regulation twisted-pair feeder maximum transmitted limit is 100 meters, it is the crosstalk between signal when being transmitted in twisted-pair feeder because of signal, It can be interfered by external electromagnetic wave, can also cause signal to decay or distort due to resistance and capacitance, apart from long The signal decaying accumulated afterwards is transmitted in which will not ensure that signal stabilization.Signal decaying is loss of signal measurement, the length with cable Degree has relationship, and with the increase of length, signal decaying is consequently increased.Decaying use db office, expression source transmit end signal to The ratio of receiving end signal intensity, decaying vary with frequency.In the wire communication application more than hundred meters, mostly by following Two methods are realized：

1, access switch in the circuit between switch A and switch b equipment, is relayed using interchanger, communication About 200 meters of distance also can realize that distance extends, same by installing the method for repeater between two sections of twisted-pair cables 4 repeaters can be installed in circuit, can make the transmission range of network up to 500 meters in this way；Its structure is as shown in Figure 1.

2, have the characteristics that long haul communication using optical fiber, convert the electrical signal to optical signal using fiber optical transceiver, most Zhongdao reuses fiber optical transceiver converted back into electric signals after reaching.According to using different optical fiber and transceiver, transmission range can be with It supports hundreds of meters to hundred kilometers of transmission, and can guarantee the speed of 10/100/1000M；Its structure is as shown in Figure 2.

Long-range network transmission may be implemented in both the above method, what disadvantage was also evident from：

1, input and maintenance cost are high；

2, the reliability of system is reduced；

3, installation work is complicated, and manageability, does not cause construction period to extend；

4, net network design difficulty increases, and active relaying and fiber plant need external power supply

5, Network Transmission Delays are big.

Utility model content

For problems of the prior art, the purpose of this utility model is to provide a kind of long range Industrial Ethernet The interchanger of transmission, efficiently solves problems of the prior art.

To achieve the above object, the utility model uses following technical scheme：

A kind of interchanger of long range Industrial Ethernet transmission, the interchanger include power module, Cortex-A9CPU, SWITCH, PHY, logic chip, control port and service port；The PHY is BroadR-Reach PHY, the BroadR- Reach PHY establish data with the MAC layer of interchanger and communicate, and interface form between the two is S3MII；The BroadR- Reach PHY are provided with BR PORT0-PORT7 totally 8 interfaces.

Further, the TX reference clocks of the S3MII and synchronised clock are provided by MAC chips, RX reference clocks with it is synchronous Clock is provided by PHY chip.

A kind of method of long range Industrial Ethernet transmission, the method are：It is transmitted needing long range Industrial Ethernet Both ends an interchanger is respectively set, wherein one is main equipment, another for from equipment, main equipment passes through BR 7 any one mouthfuls of PORT0-PORT and from any one mouth of the BR PORT0-PORT 7 of equipment interconnect；Transmission cable is standard 8 core UTP twisted-pair feeders of Cat5 classes.

The utility model has following advantageous effects：

The interchanger of the utility model is the industrial switch based on BroadR-Reach actuation techniques, its advantage is that：Nothing Extras repeater exchanger, fiber optical transceiver and optical cable need to be added, by common CAT5 cable transmissions 100Mbps Ethernets, Transmission range as far as 500 meters, have reduce network transfer delay, it is cost-effective, facilitate field wiring and stable and high effective operation etc. Advantage.

Description of the drawings

Fig. 1 is a kind of structural schematic diagram for the wired communication methods achieving over hundred meters in the prior art；

Fig. 2 is the structural schematic diagram of another wired communication methods for achieving over hundred meters in the prior art；

Fig. 3 is the internal structure schematic diagram for the interchanger that the long range Industrial Ethernet of the utility model is transmitted；

Fig. 4 establishes the structure that data communicate with the MAC layer of interchanger for the BroadR-Reach PHY of the utility model and shows It is intended to；

Fig. 5 is the connection diagram for the method that the long range Industrial Ethernet of the utility model is transmitted.

Specific implementation mode

Hereinafter, the utility model will be described more fully with reference to the accompanying drawings, shown in the drawings of showing for the utility model Example property embodiment.However, the utility model can be presented as a variety of different forms, it is not construed as being confined to describe here Exemplary embodiment.But these embodiments are provided so that this disclosure will be thorough and complete, and by the utility model Range is fully communicated to those skilled in the art.

As shown in figure 3, the utility model provides a kind of interchanger of long range Industrial Ethernet transmission, the interchanger packet Include power module, Cortex-A9CPU, SWITCH, PHY, logic chip, control port and service port；Wherein, power module To all module for power supply on plate after being converted by DC-DC；CPU be responsible for system administration, peripheral hardware chip controls, exchange chip configuration and The work such as message forwarding, the control that can be used for forwarding, major maintenance some software list items (including software routing table, software ARP table Deng), and configure according to the forwarding information of software list item two layer of three layer retransmitting table of hardware of SWITCH.Certainly, CPU itself also may be used To complete three layers of forwarding of software；SWITCH is mainly responsible for and main two or three layers of BroadR-Reach PHY data communications, completion Forwarding capability, inside and comprising the mac address table forwarded for two layers and for IP three layer retransmitting tables forwarded pass through The external PHY chip of MDC, MDIO management；BroadR-Reach PHY functions are that data transmission is believed with required electricity is received with light Number, line status, clock reference, data encoding and circuit etc., and provide standard interface to MAC layer, it is logical to establish data with MAC layer Letter, interface form S3MII, S3MII, that is, Source Sync Serial MII, source synchronous serial MII interfaces；As shown in figure 4, The TX reference clocks and synchronised clock of S3MII is provided by MAC chips, and RX reference clocks and synchronised clock are provided by PHY chip； Two effects of FPGA：1, parallel signal lighting is converted to for exchange chip LED_DATA/LED_CLK serially to be put to modulating signal, 2, for powering on each logic chips of reset, CPU, SWITCH, DDR, Nor Flash, PHY etc.；The ports Console use special Layout line is connected to the serial ports of computer, and the sheet of machine is swapped using terminal emulator (hyper terminal under such as Windows) Ground configures, interface type RJ45；MGMT is webmaster mouth, is upgraded for local cpu program.BroadR-Reach PHY settings There are BR PORT0-PORT7 totally 8 interfaces.

As shown in figure 5, the utility model additionally provides a kind of method of long range Industrial Ethernet transmission, this method is： An interchanger is respectively set at the both ends for needing long range Industrial Ethernet to transmit, wherein one is main equipment MASTER, another for from equipment SLAVE, main equipment is by 7 any one mouthfuls of BR PORT0-PORT and from the BR of equipment Any one mouth interconnections of PORT0-PORT 7；Transmission cable is 8 core UTP twisted-pair feeders of standard Cat5 classes, can 10/100M be netted very much letter Number only realize that network-in-dialing is extended to more than 500 meters by 8 core twisted pair wire of standard, centre is not necessarily to any repeater, has drop Low network transfer delay, it is cost-effective, facilitate the advantages such as field wiring and stable and high effective operation.Completely substitute repeater exchanger and The mode of fiber optical transceiver.

It is described above simply to illustrate that the utility model, it is understood that the utility model is not limited to the above implementation Example, the various variants for meeting the utility model thought both are within the protection scope of the present invention.

Claims (2)

1. a kind of interchanger of long range Industrial Ethernet transmission, the interchanger include power module, Cortex-A9CPU, SWITCH, PHY, logic chip, control port and service port；It is characterized in that, the PHY is BroadR-Reach PHY, The BroadR-Reach PHY establish data with the MAC layer of interchanger and communicate, and interface form between the two is S3MII；Institute It states BroadR-Reach PHY and is provided with totally 8 interfaces of BR PORT0-PORT 7.

2. the interchanger of long range Industrial Ethernet transmission according to claim 1, which is characterized in that the S3MII's TX reference clocks and synchronised clock are provided by MAC chips, and RX reference clocks and synchronised clock are provided by PHY chip.