CN102624533B - Vehicle level Ethernet switching device for train - Google Patents
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Abstract
本发明公开了一种列车车辆级以太网交换装置。该装置由交换模块、EEPROM模块、SPI模块、PLL时钟模块、晶振模块、MDI/MDI-X自动转换模块、省电模式模块、网络变压器模块、10/100MBASE-TX自适应M12网络接口模块、以太网接口保护模块、LED灯指示模块、复位模块和工作电源模块构成。本发明的优点:本发明所述装置主要应用于轨道交通列车通信控制系统、列车故障诊断系统、列车乘客信息系统等列车网络的数据传输和数据交换。专门针对轨道交通列车高温、强电磁干扰、强震动等恶劣的运行条件和环境而设计的车辆级以太网交换装置。
The invention discloses a train vehicle level Ethernet switching device. The device consists of switching module, EEPROM module, SPI module, PLL clock module, crystal oscillator module, MDI/MDI-X automatic conversion module, power saving mode module, network transformer module, 10/100MBASE-TX adaptive M12 network interface module, Ethernet It consists of a network interface protection module, an LED indicator module, a reset module and a working power supply module. Advantages of the present invention: the device of the present invention is mainly used in data transmission and data exchange of train networks such as rail transit train communication control systems, train fault diagnosis systems, and train passenger information systems. A vehicle-level Ethernet switching device specially designed for harsh operating conditions and environments such as high temperature, strong electromagnetic interference, and strong vibration of rail transit trains.
Description
技术领域 technical field
本发明涉及一种以太网交换装置,具体是一种列车车辆级以太网交换装置。The invention relates to an Ethernet switching device, in particular to a train vehicle level Ethernet switching device.
背景技术 Background technique
各种轨道交通列车车载设备的正常运行直接关系到铁路和城市轨道交通的安全性、稳定性、可靠性、舒适性以及列车运行速度等。列车通信网络是现代轨道交通列车设备运行和维护的基础。一套高可靠、实时、大容量的列车通信网络,对于提高轨道交通列车的运营效率,改善列车的可靠性,保障行车安全,降低维护成本等具有重要的意义。The normal operation of various rail transit train on-board equipment is directly related to the safety, stability, reliability, comfort and train speed of railways and urban rail transit. The train communication network is the basis for the operation and maintenance of modern rail transit train equipment. A high-reliability, real-time, and large-capacity train communication network is of great significance for improving the operational efficiency of rail transit trains, improving train reliability, ensuring driving safety, and reducing maintenance costs.
现有轨道交通列车车载机械、电气和辅助设备众多,且车内安装有大量的分布式传感器和复杂耦合的智能节点,联网控制越来越复杂,以及各种安全检测和信息系统对列车网络系统性能要求的提高,迫切需要列车通信网络具有更高的实时性和可靠性、较好的可维护性和扩展性、高的带宽和良好的互操作性等,且能进行分布式任务处理和数据融合,而现有各机车、高速动车组和城轨列车上应用的列车通信网络由于传输速率较低,致使列车牵引、制动、辅助等设备的很多关联状态信息和故障隐患不能有效传输,也不能及时发现全列车可能的故障,致使大量的事故难以追溯根源。以太网基于IEEE802.3标准,作为具备大容量数据传输能力的现场总线已经大规模应用于工业现场中,如Ethernet/IP、PROFINET、Ethernet PowerLink、EtherCAT、MODBUS-IDA和EPA实时以太网等。但列车车载环境恶劣,车辆之间经常需要解编和重联,常用的100Mbps和1000Mbps民用和工业级以太网,在可靠性、实时性和稳定性等方面与列车通信网络需求并不相适应,需要改良。Existing rail transit trains have many on-board machinery, electrical and auxiliary equipment, and there are a large number of distributed sensors and complex coupling intelligent nodes installed in the train. With the improvement of performance requirements, there is an urgent need for the train communication network to have higher real-time performance and reliability, better maintainability and scalability, high bandwidth and good interoperability, etc., and can perform distributed task processing and data processing. However, due to the low transmission rate of the train communication network used on the existing locomotives, high-speed EMUs and urban rail trains, many associated status information and hidden troubles of train traction, braking, auxiliary equipment, etc. The possible failure of the whole train cannot be found in time, which makes it difficult to trace the source of a large number of accidents. Ethernet is based on the IEEE802.3 standard. As a field bus with large-capacity data transmission capabilities, it has been widely used in industrial sites, such as Ethernet/IP, PROFINET, Ethernet PowerLink, EtherCAT, MODBUS-IDA and EPA Real-time Ethernet. However, the on-board environment of trains is harsh, and decompilation and reconnection between vehicles are often required. The commonly used 100Mbps and 1000Mbps civil and industrial Ethernets do not meet the needs of train communication networks in terms of reliability, real-time performance and stability. Needs to be improved.
发明内容 Contents of the invention
本发明的目的是针对现有轨道交通列车通信网络装置带宽的不足,提供一种专门针对列车恶劣运行条件和环境的列车车辆级以太网交换装置,集列车通信网络数据交换、广播风暴保护、自动地址学习、高速无阻塞交换、网络拓展等多功能装置,即可以单独应用,也可以以模块的形式插入机箱。The purpose of the present invention is to address the shortage of bandwidth of existing rail transit train communication network devices, and provide a train vehicle-level Ethernet switching device specially designed for severe train operating conditions and environments, which integrates train communication network data exchange, broadcast storm protection, automatic Address learning, high-speed non-blocking switching, network expansion and other multi-functional devices can be used alone or inserted into the chassis in the form of modules.
本发明解决上述技术问题的技术方案如下:The technical scheme that the present invention solves the problems of the technologies described above is as follows:
一种列车车辆级以太网交换装置。该装置由交换模块、EEPROM模块、SPI模块、PLL时钟模块、晶振模块、MDI/MDI-X自动转换模块、省电模式模块、网络变压器模块、5个10/100MBASE-TX自适应M12网络接口模块、以太网接口保护模块、LED灯指示模块、复位模块和工作电源模块构成。A train vehicle level Ethernet switch device. The device consists of switching module, EEPROM module, SPI module, PLL clock module, crystal oscillator module, MDI/MDI-X automatic conversion module, power saving mode module, network transformer module, and five 10/100MBASE-TX adaptive M12 network interface modules , Ethernet interface protection module, LED indicator module, reset module and working power supply module.
该装置内设置有交换模块,它包括交换芯片和与交换芯片连接的PLL时钟模块、晶振模块、复位模块,在交换模块上嵌有MDI/MDI-X自动转换模块和省电模式模块;该装置对外通信的网络接口由网络变压器模块、以太网接口保护模块、基于IEC 61076-2-101标准的M12网络接口模块、LED灯指示模块组成;该装置还包括工作电源模块、EEPROM模块、SPI模块。The device is provided with an exchange module, which includes an exchange chip and a PLL clock module connected to the exchange chip, a crystal oscillator module, and a reset module, and an MDI/MDI-X automatic conversion module and a power-saving mode module are embedded on the exchange module; the device The network interface for external communication consists of a network transformer module, an Ethernet interface protection module, an M12 network interface module based on the IEC 61076-2-101 standard, and an LED indicator module; the device also includes a working power supply module, an EEPROM module, and an SPI module.
各模块的连接关系:交换模块设置有PLL时钟模块、晶振模块、复位模块、MDI/MDI-X自动转换模块和省电模式模块;交换模块分别与LED灯指示模块、网络变压器模块、EEPROM模块和工作电源模块连接;SPI模块和三态门模块连接;网络变压器模块与M12网络接口模块连接;以太网接口保护模块与M12网络接口模块连接。The connection relationship of each module: the switch module is equipped with a PLL clock module, a crystal oscillator module, a reset module, an MDI/MDI-X automatic conversion module and a power saving mode module; The working power supply module is connected; the SPI module is connected with the three-state gate module; the network transformer module is connected with the M12 network interface module; the Ethernet interface protection module is connected with the M12 network interface module.
上述各模块的功能如下:The functions of the above modules are as follows:
交换模块用作数据交换的核心模块;EEPROM模块用于配置交换芯片内寄存器设置;SPI模块用于外接设备通过串行方式配置交换芯片内寄存器;PLL时钟模块和晶振模块向交换模块提供基本时钟信号;MDI/MDI-X自动转换模块用于提供网线端口自动转换功能;省电模式模块用于让整个装置进入低功耗省电模式;网络变压器模块用于信号电平耦合和电气隔离功能;M12网络接口模块用于列车车载数据传输;以太网接口保护模块用于对来自外界引起的电压冲击起保护作用;LED灯指示模块用于指示交换装置的链路连接状态、全双工状态、传输速率状态;复位模块用于让整个装置重新复位启动;工作电源模块主要实现将110V直流电源转换成整个装置各个模块所需要的电源。The switch module is used as the core module for data exchange; the EEPROM module is used to configure the register settings in the switch chip; the SPI module is used for external devices to configure the registers in the switch chip through serial mode; the PLL clock module and crystal oscillator module provide basic clock signals to the switch module ; MDI/MDI-X automatic conversion module is used to provide automatic conversion function of network cable port; power saving mode module is used to make the whole device enter low power consumption and power saving mode; network transformer module is used for signal level coupling and electrical isolation function; M12 The network interface module is used for data transmission on the train; the Ethernet interface protection module is used to protect the voltage impact caused by the outside world; the LED light indicator module is used to indicate the link connection status, full-duplex status, and transmission rate of the switching device Status; the reset module is used to reset and start the whole device; the working power module mainly realizes the conversion of 110V DC power into the power required by each module of the whole device.
本发明的优点:Advantages of the present invention:
本发明所述装置主要应用于轨道交通列车通信控制系统、列车故障诊断系统、列车乘客信息系统等列车网络的数据传输和数据交换。专门针对轨道交通列车高温、强电磁干扰、强震动等恶劣的运行条件和环境而设计的车辆级以太网交换装置。同时具有通信速率高、低延时、全双工通信、支持QoS和VPN、安全可靠性高。工作温度是-40℃至+85℃。即可以单独应用,也可以采用模块的形式插入机箱。且符合轨道交通车载列车通信网络和信息技术的发展需求。The device of the present invention is mainly used in data transmission and data exchange of train networks such as rail transit train communication control systems, train fault diagnosis systems, and train passenger information systems. A vehicle-level Ethernet switching device specially designed for harsh operating conditions and environments such as high temperature, strong electromagnetic interference, and strong vibration of rail transit trains. At the same time, it has high communication rate, low delay, full-duplex communication, supports QoS and VPN, and has high security and reliability. The operating temperature is -40°C to +85°C. It can be used alone, or it can be inserted into the chassis in the form of modules. And it is in line with the development needs of rail transit on-board train communication network and information technology.
附图说明 Description of drawings
图1是本发明单独应用示意图。Fig. 1 is a schematic diagram of a single application of the present invention.
图2是本发明作为模块插入机箱应用示意图。Fig. 2 is a schematic diagram of the application of the present invention as a module inserted into a chassis.
图3是本发明的模块连接图。Fig. 3 is a module connection diagram of the present invention.
图中:交换模块1、LED灯指示模块2、复位模块3、省电模式模块4、MDI/MDI-X自动转换模块5、工作电源模块6、SPI模块7、EEPROM模块8、晶振模块9、PLL时钟模块10、网络变压器模块11、以太网接口保护模块12、M12网络接口模块13。In the figure: switching module 1, LED indicator module 2, reset module 3, power saving mode module 4, MDI/MDI-X automatic conversion 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 .
具体实施方式 Detailed ways
下面结合附图和实施例,对本发明的技术方案做进一步的说明。The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
本发明结构如图1、图2、图3所示。The structure of the present invention is shown in Fig. 1 , Fig. 2 and Fig. 3 .
图1所示,该列车车辆级以太网交换装置作为独立的交换装置应用时,前面板设置有电源LED指示灯1、2针独立电源输入接口2、5个交换端口LED指示灯3、5个D型编码4针M12网络接口Port1至Port5分别对应于4至8、复位按钮9。装置的四周有4个紧固螺栓孔10、接地连接11。As shown in Figure 1, when the train vehicle-level Ethernet switching device is used as an independent switching device, the front panel is provided with a power supply LED indicator 1, a 2-pin independent power input interface 2, and 5 switching port LED indicators 3 and 5 D-coded 4-pin M12 network interface Port1 to Port5 correspond to 4 to 8 and reset button 9 respectively. There are four fastening bolt holes 10 and ground connections 11 around the device.
图2所示,该列车车辆级以太网交换装置作为交换装置模块插入机箱应用时,前面板设置有电源LED指示灯1、5个交换端口LED指示灯分别对应于2至6、5个D型编码4针M12网络接口分别对应于7至11,前面板的四周有4个紧固螺栓孔12。As shown in Figure 2, the train vehicle-level Ethernet switching device is inserted into the chassis as a switching device module In application, the front panel is equipped with power LED indicators 1, 5 switching port LED indicators corresponding to 2 to 6, and 5 D-coded 4-pin M12 network interfaces corresponding to 7 to 11, and there are 4 ports around the front panel. 12 fastening bolt holes.
图3所示,一种列车车辆级以太网交换装置,由交换模块1、LED灯指示模块2、复位模块3、省电模式模块4、MDI/MDI-X自动转换模块5、工作电源模块6、SPI模块7、EEPROM模块8、晶振模块9、PLL时钟模块10、网络变压器模块11、以太网接口保护模块12、M12网络接口模块13构成。As shown in Fig. 3, a kind of Ethernet switching device of train vehicle level is composed of switching module 1, LED light indicating module 2, reset module 3, power saving mode module 4, MDI/MDI-X automatic conversion module 5, working power supply 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 constitutes.
各模块的连接关系:交换模块1设置有PLL时钟模块10、晶振模块9、复位模块3、MDI/MDI-X自动转换模块5和省电模式模块4;交换模块1分别与LED灯指示模块2、网络变压器模块11、EEPROM模块8和工作电源模块6连接;网络变压器模块11与以太网接口保护模块12连接;以太网接口保护模块12与M12网络接口模块13连接。The connection relationship of each module: the switch module 1 is provided with a PLL clock module 10, a crystal oscillator module 9, a reset module 3, an MDI/MDI-X automatic conversion module 5 and a power saving mode module 4; the switch module 1 is connected to the LED indicator module 2 respectively , the network transformer module 11, the EEPROM module 8 and the working power supply module 6 are connected; the network transformer module 11 is connected with the Ethernet interface protection module 12; the Ethernet interface protection module 12 is connected with the M12 network interface module 13.
各模块的功能如下:The functions of each module are as follows:
交换模块1用作数据交换的核心模块;EEPROM模块8用于配置交换芯片内寄存器设置;SPI模块7用于外接设备通过串行方式配置交换芯片内寄存器;PLL时钟模块10和晶振模块9向交换模块提供基本时钟信号;MDI/MDI-X自动转换模块5用于提供网线端口自动转换功能;省电模式模块4用于让整个装置进入低功耗省电模式;网络变压器模块11用于信号电平耦合和电气隔离功能;M12网络接口模块13用于列车车载数据传输;以太网接口保护模块12用于对来自外界引起的电压冲击起保护作用;LED灯指示模块2用于指示交换装置的链路连接状态、全双工状态、传输速率状态;复位模块3用于让整个装置重新复位启动;工作电源模块6主要实现将110V直流电源转换成整个装置各个模块所需要的电源。The switch module 1 is used as the core module for data exchange; the EEPROM module 8 is used to configure the register settings in the switch chip; the SPI module 7 is used for external devices to configure the registers in the switch chip through serial mode; the PLL clock module 10 and the crystal oscillator module 9-way switch The module provides the basic clock signal; the MDI/MDI-X automatic conversion module 5 is used to provide the automatic conversion function of the network cable port; the power saving mode module 4 is used to make the whole device enter a low power consumption power saving mode; the network transformer module 11 is used for signal power Flat coupling and electrical isolation functions; M12 network interface module 13 is used for train on-board data transmission; Ethernet interface protection module 12 is used to protect the voltage impact caused by the outside; LED light indicator module 2 is used to indicate the chain of the switching device road connection status, full-duplex status, and transmission rate status; the reset module 3 is used to reset and start the whole device; the working power module 6 mainly realizes the conversion of 110V DC power into the power required by each module of the whole device.
实施例1Example 1
如图3所示,交换模块1的交换芯片采用MICREL公司的KSZ8995MAI工业级芯片,作为交换装置的核心芯片,协调控制与其连接的各个模块的工作。LED灯指示模块2包含5个发光LED灯,用于指示每个端口的数据传输状态。复位模块3由高速开关二极管1N4148、复位开关,以及公知复位电路组成,用于整个装置重新复位启动。省电模式模块4由KSZ895MAI芯片的外围电路组成,用于让整个装置进入低功耗省电模式。MDI/MDI-X自动转换模块5由KSZ895MAI芯片的外围电路组成,用于实现网线端口自动翻转功能。工作电源模块6由北京星原丰泰公司的XZR05/110S05和MICREL公司的MIC39100-3.3BS、MIC39150-1.8BT、整流二极管1N4004以及公知外围电路组成,分别为装置提供3.3V、1.8V、2.5V电源。SPI模块7由FAIRCHILD公司的74F125芯片及公知外围电路组成,用于外接设备以串行方式配置交换芯片内寄存器。EEPROM模块8由ATMEL公司的AT24C02芯片和公知外围电路组成,用于配置交换芯片内寄存器设置。晶振模块9和PLL时钟模块10由25MHZ晶体振荡器及公知外围电路组成,用于提供基本的时钟信号。以太网接口保护模块12由10个SEMTECH公司的SR2.8芯片构成,用于对来自雷电、负载开关等人为操作错误而引起的电压冲击起保护作用。M12网络接口模块13由Phoenix公司5个D型编码4针M12接口组成,用于列车通信系统10/100MBASE-TX自适应网络数据接口。网络变压器模块11由Pulse公司的H1102、H1164芯片及公知外围电路组成。其中H1164和Prot1~Port4连接,H1102和Port5连接,用于信号电平耦合和电气隔离功能。As shown in FIG. 3 , the switch chip of the switch module 1 adopts the KSZ8995MAI industrial-grade chip of MICREL Company, which is used as the core chip of the switch device, and coordinates and controls the work of each module connected to it. LED light indication module 2 contains 5 light-emitting LED lights, which are used to indicate the data transmission status of each port. The reset module 3 is composed of a high-speed switching diode 1N4148, a reset switch, and a known reset circuit, and is used for restarting the entire device. The power-saving mode module 4 is composed of peripheral circuits of the KSZ895MAI chip, and is used to allow the entire device to enter a low-power power-saving mode. The MDI/MDI-X automatic conversion module 5 is composed of the peripheral circuit of the KSZ895MAI chip, and is used to realize the function of automatic reversing of the network cable port. The working power supply module 6 is composed of XZR05/110S05 of Beijing Xingyuan Fengtai Company, MIC39100-3.3BS, MIC39150-1.8BT of MICREL Company, rectifier diode 1N4004 and known peripheral circuits, which provide 3.3V, 1.8V and 2.5V power supplies for the device respectively . SPI module 7 is made up of the 74F125 chip of FAIRCHILD company and known peripheral circuit, is used for the external equipment to configure and exchange the register in the chip in serial mode. EEPROM module 8 is made up of AT24C02 chip of ATMEL company and known peripheral circuit, is used for disposing the register setting in switching chip. The crystal oscillator module 9 and the PLL clock module 10 are composed of a 25MHZ crystal oscillator and known peripheral circuits for providing basic clock signals. The Ethernet interface protection module 12 is composed of 10 SR2.8 chips of SEMTECH Company, and is used to protect voltage impacts caused by human errors such as lightning and load switches. The M12 network interface module 13 is composed of 5 D-type coded 4-pin M12 interfaces of Phoenix Company, and is used for the 10/100MBASE-TX adaptive network data interface of the train communication system. The network transformer module 11 is composed of H1102 and H1164 chips of Pulse Company and known peripheral circuits. Among them, H1164 is connected with Prot1~Port4, and H1102 is connected with Port5, which is used for signal level coupling and electrical isolation.
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