CN102624533B - Vehicle level Ethernet switching device for train - Google Patents

Abstract

The invention discloses a vehicle level Ethernet switching device for a train, which comprises a switching module, an EEPROM (Electrically Erasable Programmable Readonly Memory) module, an SPI (Serial Peripheral Interface) module, a PLL (Phase Locking Loop) clock module, a crystal oscillator module, an MDI/MDI-X (Media Dependent Interface/Media Dependent Interface-X) automatic switching module, a power saving mode module, a network transformer module, a 10/100 MBASE-TX self-adaption M12 network interface module, an Ethernet interface protective module, an LED lamp indicate module, a resetting module and a working power supply module. The vehicle level Ethernet switching device for the train is mainly used in data transmission and data exchange of train networks such as a track traffic train communication control system, a train fault diagnosis system and a train passenger information system. The vehicle level Ethernet switching device is designed specially aiming at severe operating conditions and environments such as high temperature, high electromagnetic interference and high shake of a track traffic train.

Description

A kind of rail vehicle level Ethernet exchanging device

Technical field

The present invention relates to a kind of Ethernet exchanging device, specifically a kind of rail vehicle level Ethernet exchanging device.

Background technology

The normal operation of various rail transit train mobile units is directly connected to fail safe, stability, reliability, comfortableness and the train running speed etc. of railway and urban track traffic.TCN is the basis of modern railway transportation train apparatus operation and maintenance.A set of highly reliable, real-time, jumbo TCN, for the efficiency of operation that improves rail transit train, improves the reliability of train, guarantee driving safety, and reduction maintenance cost etc. has great importance.

Existing rail transit train vehicle-mounted mechanical, electric numerous with auxiliary equipment, and a large amount of distributed sensors and the intelligent node of complicated coupling are installed in car, networking control becomes increasingly complex, and various safety detection and the raising of information system to the requirement of train network systematic function, there is higher real-time and reliability in the urgent need to TCN, maintainability and autgmentability preferably, high bandwidth and good interoperability etc., and can carry out distributed task scheduling processing and data fusion, and existing each locomotive, the TCN of applying on EMU and municipal rail train is because transmission rate is lower, cause train traction, braking, auxiliary a lot of association status information and the potential faults that waits equipment can not effectively transmit, can not find in time the fault that full train is possible, cause a large amount of accidents to be difficult to review root.Ethernet is based on IEEE802.3 standard, as the fieldbus that possesses Large Volume Data transmittability large-scale application in industry spot, as Ethernet/IP, PROFINET, Ethernet PowerLink, EtherCAT, MODBUS-IDA and EPA real-time ethernet etc.But train-installed environment is severe, between vehicle, often need to separate and compile and heavy connection, the civilian and technical grade Ethernet of conventional 100Mbps and 1000Mbps, in the aspects such as reliability, real-time and stability and TCN demand incompatible, needs to improve.

Summary of the invention

The object of the invention is the deficiency for existing rail transit train arrangement, communications network bandwidth; a kind of special rail vehicle level Ethernet exchanging device for the severe service conditions of train and environment is provided; the multi-function devices such as collection TCN exchanges data, broadcast storm protection, automatic address study, high speed nonblocking switching, network expansion; can apply separately, also can insert cabinet with the form of module.

The technical scheme that the present invention solves the problems of the technologies described above is as follows:

A kind of rail vehicle level Ethernet exchanging device.This device is by Switching Module, EEPROM module, SPI module, pll clock module, crystal oscillator module, MDI/MDI-X automatic converting module, battery saving mode module, network transformer module, 5 10/100MBASE-TX adaptive M 12 Network Interface Modules, Ethernet interface protection module, LED lamp indicating module, reseting module and working power module compositions.

In this device, be provided with Switching Module, it comprises exchange chip and the pll clock module being connected with exchange chip, crystal oscillator module, reseting module, is embedded with MDI/MDI-X automatic converting module and battery saving mode module on Switching Module; The network interface of this device correspondence with foreign country is made up of network transformer module, Ethernet interface protection module, the M12 Network Interface Module based on IEC 61076-2-101 standard, LED lamp indicating module; This device also comprises working power module, EEPROM module, SPI module.

The annexation of each module: Switching Module is provided with pll clock module, crystal oscillator module, reseting module, MDI/MDI-X automatic converting module and battery saving mode module; Switching Module is connected with LED lamp indicating module, network transformer module, EEPROM module and working power module respectively; SPI module is connected with triple gate module; Network transformer module is connected with M12 Network Interface Module; Ethernet interface protection module is connected with M12 Network Interface Module.

The function of above-mentioned each module is as follows:

Switching Module is as the nucleus module of exchanges data; EEPROM module is used for configuring register setting in exchange chip; SPI module configures register in exchange chip for external equipment by serial mode; Pll clock module and crystal oscillator module provide basic clock signal to Switching Module; MDI/MDI-X automatic converting module is used for providing netting twine port auto-conversion function; Battery saving mode module is used for allowing whole device enter low-power consumption battery saving mode; Network transformer module is for signal level coupling and electrical isolation function; M12 Network Interface Module is for train-installed transfer of data; Ethernet interface protection module is for shielding to the voltge surge causing from the external world; LED lamp indicating module is used to indicate link connection state, full duplex state, the transmission rate state of switch; Reseting module is used for allowing the startup that again resets of whole device; Working power module mainly realizes and converts 110V DC power supply to whole device modules needed power supply.

Advantage of the present invention:

Device of the present invention is mainly used in transfer of data and the exchanges data of the train network such as rail transit train communication control system, train fault diagnostic system, train passenger information system.The vehicle grade Ethernet exchanging device designing for the severe service conditions such as rail transit train high temperature, strong electromagnetic, strong motion and environment specially.There is the high and low time delay of traffic rate, full-duplex communication, support QoS and VPN simultaneously, security reliability is high.Working temperature is-40 DEG C to+85 DEG C.Can apply separately, also can adopt the form of module to insert cabinet.And meet the growth requirement of rail transportation vehicle-mounted TCN and information technology.

Brief description of the drawings

Fig. 1 is that the present invention applies separately schematic diagram.

Fig. 2 is that the present invention inserts cabinet application schematic diagram as module.

Fig. 3 is module connection layout of the present invention.

In figure: Switching Module 1, LED lamp indicating module 2, reseting module 3, battery saving mode module 4, MDI/MDI-X automatic converting module 5, working power module 6, SPI module 7, EEPROM module 8, crystal oscillator module 9, pll clock module 10, network transformer module 11, Ethernet interface protection module 12, M12 Network Interface Module 13.

Embodiment

Below in conjunction with drawings and Examples, technical scheme of the present invention is described further.

Structure of the present invention as shown in Figure 1, Figure 2, Figure 3 shows.

Shown in Fig. 1, this rail vehicle level Ethernet exchanging device is during as the application of switch independently, and front panel is provided with 3,5 D types of 2,5 switching port LED light of power LED indicator light 1,2 pin independent current source input interface and encodes that 4 pin M12 network interface Port1 to Port5 correspond respectively to 4 to 8, reset button 9.The surrounding of device has 4 fastening bolt holes 10, grounding connection 11.

Shown in Fig. 2, this rail vehicle level Ethernet exchanging device in return apparatus module inserts cabinet when application, front panel is provided with 1,5 switching port LED light of power LED indicator light and corresponds respectively to 2 to 6,5 D types, the 4 pin M12 network interfaces of encoding and correspond respectively to 7 to 11, and the surrounding of front panel has 4 fastening bolt holes 12.

Shown in Fig. 3; a kind of rail vehicle level Ethernet exchanging device, is made up of Switching Module 1, LED lamp indicating module 2, reseting module 3, battery saving mode module 4, MDI/MDI-X automatic converting module 5, working power module 6, SPI module 7, EEPROM module 8, crystal oscillator module 9, pll clock module 10, network transformer module 11, Ethernet interface protection module 12, M12 Network Interface Module 13.

The annexation of each module: Switching Module 1 is provided with pll clock module 10, crystal oscillator module 9, reseting module 3, MDI/MDI-X automatic converting module 5 and battery saving mode module 4; Switching Module 1 is connected with LED lamp indicating module 2, network transformer module 11, EEPROM module 8 and working power module 6 respectively; Network transformer module 11 is connected with Ethernet interface protection module 12; Ethernet interface protection module 12 is connected with M12 Network Interface Module 13.

The function of each module is as follows:

Switching Module 1 is as the nucleus module of exchanges data; EEPROM module 8 is for configuring register setting in exchange chip; SPI module 7 configures register in exchange chip for external equipment by serial mode; Pll clock module 10 and crystal oscillator module 9 provide basic clock signal to Switching Module; MDI/MDI-X automatic converting module 5 is for providing netting twine port auto-conversion function; Battery saving mode module 4 is for allowing whole device enter low-power consumption battery saving mode; Network transformer module 11 is for signal level coupling and electrical isolation function; M12 Network Interface Module 13 is for train-installed transfer of data; Ethernet interface protection module 12 is for shielding to the voltge surge causing from the external world; LED lamp indicating module 2 is used to indicate link connection state, full duplex state, the transmission rate state of switch; Reseting module 3 is for allowing the startup that again resets of whole device; The main realization of working power module 6 converts 110V DC power supply to whole device modules needed power supply.

Embodiment 1

As shown in Figure 3, the exchange chip of Switching Module 1 adopts the KSZ8995MAI technical grade chip of MICREL company, and the in return acp chip of device, coordinates to control the work of connected modules.LED lamp indicating module 2 comprises 5 light emitting LED lamp, is used to indicate the data transmission state of each port.Reseting module 3 is by cache switching diodes 1N4148, reset switch, and known reset circuit composition, for the startup that again resets of whole device.Battery saving mode module 4 is made up of the peripheral circuit of KSZ895MAI chip, for allowing whole device enter low-power consumption battery saving mode.MDI/MDI-X automatic converting module 5 is made up of the peripheral circuit of KSZ895MAI chip, for realizing netting twine port self-turnover.Working power module 6 is made up of the safe XZR05/110S05 of company of Beijing Xing Yuanfeng and MIC39100-3.3BS, the MIC39150-1.8BT of MICREL company, rectifier diode 1N4004 and known peripheral circuit, is respectively device 3.3V, 1.8V, 2.5V power supply are provided.SPI module 7 is made up of 74F125 chip and the known peripheral circuit of FAIRCHILD company, configures register in exchange chip for external equipment with serial mode.EEPROM module 8 is made up of AT24C02 chip and the known peripheral circuit of atmel corp, for configuring register setting in exchange chip.Crystal oscillator module 9 and pll clock module 10 are made up of 25MHZ crystal oscillator and known peripheral circuit, for basic clock signal is provided.Ethernet interface protection module 12 is made up of the SR2.8 chip of 10 SEMTECH companies, for the voltge surge causing from the manual operation such as thunder and lightning, load switch mistake is shielded.M12 Network Interface Module 13 is made up of 5 D types of Phoenix company, the 4 pin M12 interfaces of encoding, for train communication system 10/100MBASE-TX adaptive network data-interface.Network transformer module 11 is made up of H1102, H1164 chip and the known peripheral circuit of Pulse company.Wherein H1164 is connected with Prot1～Port4, and H1102 is connected with Port5, for signal level coupling and electrical isolation function.

Claims (2)

1. a rail vehicle level Ethernet exchanging device, hereinafter to be referred as device, it is characterized in that, device is by Switching Module, EEPROM module, SPI module, pll clock module, crystal oscillator module, MDI/MDI-X self-turnover module, battery saving mode module, network transformer module, 5 10/100MBASE-TX adaptive M 12 Network Interface Modules, Ethernet interface protection module, LED lamp indicating module, reseting module and working power module compositions based on IEC61076-2-101 standard;

In this device, be provided with Switching Module, Switching Module comprises exchange chip, is embedded with MDI/MDI-X self-turnover module and battery saving mode module on Switching Module; The network interface of this device correspondence with foreign country is made up of network transformer module, Ethernet interface protection module, 10/100MBASE-TX adaptive M 12 Network Interface Modules based on IEC61076-2-101 standard, LED lamp indicating module;

The annexation of each module: Switching Module is provided with pll clock module, crystal oscillator module, reseting module, MDI/MDI-X self-turnover module and battery saving mode module; Switching Module is connected with LED lamp indicating module, network transformer module, EEPROM module and working power module respectively; Network transformer module is connected with Ethernet interface protection module; Ethernet interface protection module is connected with 10/100MBASE-TX adaptive M 12 Network Interface Modules based on IEC61076-2-101 standard;

The function of above-mentioned each module is as follows: Switching Module is as the nucleus module of exchanges data; EEPROM module is used for configuring register setting in exchange chip; SPI module configures register in exchange chip for external equipment by serial mode; Pll clock module and crystal oscillator module provide basic clock signal to Switching Module; MDI/MDI-X self-turnover module is used for providing netting twine port auto-conversion function; Battery saving mode module is used for allowing whole device enter low-power consumption battery saving mode; Network transformer module is for signal level coupling and electrical isolation function; 10/100MBASE-TX adaptive M 12 Network Interface Modules based on IEC61076-2-101 standard are for train-installed transfer of data; Ethernet interface protection module is for shielding to the voltge surge causing from the external world; LED lamp indicating module is used to indicate link connection state, full duplex state, the transmission rate state of switch; Reseting module is used for allowing the startup that again resets of whole device; Working power module mainly realizes and converts 110V DC power supply to whole device modules needed power supply.

2. a kind of rail vehicle level Ethernet exchanging device according to claim 1, is characterized in that, this switch both can use separately ON TRAINS, and the exchange plug-in unit that can be used as again a certain system on train is placed in cabinet application.