CN100466521C - 矿用隔爆兼本安型工业以太环网交换机 - Google Patents

矿用隔爆兼本安型工业以太环网交换机 Download PDF

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Publication number
CN100466521C
CN100466521C CNB200610040152XA CN200610040152A CN100466521C CN 100466521 C CN100466521 C CN 100466521C CN B200610040152X A CNB200610040152X A CN B200610040152XA CN 200610040152 A CN200610040152 A CN 200610040152A CN 100466521 C CN100466521 C CN 100466521C
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pin
ethernet
interface
chip
suppression
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CN1845496A (zh
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钱建生
李鹏
顾军
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XUZHOU HUAXUN TECHNOLOGY Co Ltd
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XUZHOU HUAXUN TECHNOLOGY Co Ltd
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Abstract

一种能够在井下使用的矿用隔爆兼本安型工业以太环网交换机，主要由以太网二层交换芯片、以太网接口变压器、带工作指示灯的网络接口、嵌入式CPU、存储器、嵌入式实时操作系统和相关控制软件组成，整个电路安装在隔爆外壳里。多台矿用隔爆兼本安型工业以太环网交换机能够组成具有自愈功能的环网，使得井下通信网的鲁棒性和信息传输的安全性得到大大提高。系统支持Web远程浏览、管理和系统软件的在线升级，同时具有隔爆兼本质安全性。

Description

矿用隔爆兼本安型工业以太环网交换机
技术领域
本发明涉及一种矿用网络通信设备，尤其适合在煤矿井下含瓦斯及煤尘较多的易燃易爆的环境中使用的矿用隔爆兼本安型工业以太网交换机。
背景技术
目前，公知的交换机由以太网二层交换芯片、接口变压器和网络接口组成，电路安装在一个绝缘外壳里，完成以太网数据的转发。这样的交换机由于：(1)不具有隔爆性质，不符合煤矿井下设备的安全规范；(2)由于不提供上联冗余接口，也就不能组成具有自愈功能的环网，这样当系统运行中出现故障时，很容易造成井下通信网的崩溃，信息传输的可靠性得不到保证；(3)不提供交换机管理配置功能，用户也不能实时地监控交换机运行状态。所以不适用于对信息传输可靠性要求很高的煤矿井下使用。
发明内容
本发明的目的是提供一种矿用隔爆兼本安型工业以太环网交换机，它不但提供2对上联冗余的100Base-Fx单模或多模光纤接口，利用上联冗余光纤接口组成具有自愈功能的冗余环网来保证井下信息传输的可靠性，而且提供用户管理配置功能，是构建煤矿井下多媒体综合业务数字网的关键设备之一。
本发明是以如下技术方案实现的：电路主要由交换电路和控制电路两部分组成，交换电路负责以太网数据的发送和接受，主要由以太网二层交换芯片、以太网接口变压器、带指示灯的网络接口连接而成。以太网二层交换芯片U1的LED引脚连接到带指示灯的网络接口U4和U5的LED引脚，U1的发送信号、接收信号引脚连接到以太网接口变压器U2和U3的接收信号、发送信号引脚，U2和U3的发送、接收信号引脚分别连接到U4和U5的接收、发送信号引脚，U1的MII引脚连接到嵌入式CPU芯片U6的MII引脚，U1的SPI引脚连接到U6的P3、P4、P6、P7引脚，U6的数据线、地址线和FLASH芯片U7的数据线、地址线相连接，U6的IIC引脚连接EEROM芯片U8的IIC引脚，整个电路安装在一个密闭壳体中。壳体由金属或非金属制成，并符合煤矿井下安全规范。
提供冗余的2对上联100Base-Fx单模或多模光纤接口，利用上联冗余光纤接口组成光纤冗余环网。
以太网数据帧从U4、U5中的某个接口传送到U2或U3中，在其中经过码型转换和波形整形之后，发送给交换芯片U1，U1负责解析以太网数据帧，并通过查阅数据帧的目的地址，确定数据应当发往目的端口、上层控制电路或者以广播的形式发送至其它所有端口。如果不是发往上层控制电路的数据则数据被转发至变压器芯片U2或者U3进行码型转换和整形，然后发送至U4、U5，经传输电缆发往目的主机。发往控制电路的数据在U6中得到处理，如果是请求修改交换机，U6将修改结果保存在U8中并修改芯片U1完成设置；如果是请求操作U7上文件，则U6将读取的数据发往U1，U1再将数据发往目的端口。
本发明的有益效果是：采用本发明在井下建立宽带的多媒体综合业务数字网，可以实现数据、语音和图像的实时、高速传输，这是解决矿井通信标准不一等问题的根本方法，同时用户在地面上就可以完成对井下设备的管理，并且安装及维护简单，多台矿用隔爆兼本安型工业以太环网交换机可以组成具有自愈功能的光纤环网，从而大大提高了井下通信系统的鲁棒性和信息传输的安全性，对煤矿安全生产具有深远的意义。
附图说明
下面结合附图和实验例对本发明进一步说明。
图1是隔爆兼本安型工业以太环网交换机原理框图；
图2是交换芯片部分电路原理图；
图3是控制芯片部分电路原理图；
图4是存储电路图；
图5是矿用隔爆兼本安型工业以太环网交换机隔爆外壳。
具体实施方式
参照图1，U1：以太网二层交换芯片，是交换电路的核心部分，实现以太网二层交换，负责各个交换端口之间数据包的转发。
U2、U3：以太网物理层变压器芯片，每个元件包含四个变压器组，实现以太网数据流的码型转换和整形。
U4、U5：以太网接口及其状态指示灯，每个元件包含四个接口，是以太网5类双绞线RJ45接头的连接器，每个接口包含两个指示灯(分别为橙色和绿色)。
OSC1：25M晶振，负责产生25MHz时钟脉冲信号。
OSC2：10M晶振，负责产生10MHz时钟脉冲信号。
U6：嵌入式CPU芯片，是控制电路的核心部分，在其上运行嵌入式操作系统和控制软件，方便用户对环网交换机的管理。
U7：FLASH芯片，保存嵌入式实时操作系统、应用软件及系统运行日志等。
U8：EEROM芯片，保存系统的配置参数，当系统启动或者用户修改系统配置参数后，交换机按照该芯片中的参数来重新配置。
以太网数据帧从U4、U5中的某个接口传送到U2或U3中，在其中经过码型转换和波形整形之后，发送给交换芯片U1，U1负责解析以太网数据帧，并通过查阅数据帧的目的地址，确定数据应当发往目的端口、上层控制电路或者以广播的形式发送至其它所有端口。如果不是发往上层控制电路的数据则数据被转发至变压器芯片U2或者U3进行码型转换和整形，然后发送至U4、U5，经传输电缆发往目的主机。发往控制电路的数据在U6中得到处理，如果是请求修改交换机，U6将修改结果保存在U8中并修改芯片U1完成设置；如果是请求操作U7上文件，则U6将读取的数据发往U1，U1再将数据发往目的端口。
参照图1至图4，电路由交换电路和控制电路两大部分组成，交换电路主要由以太网二层交换芯片、以太网接口变压器、带指示灯的网络接口和与控制电路接口部分组成，实际使用的以太网二层交换芯片为BROADCOM公司的BCM5338M，以太网接口变压器为HANRUN公司的HR604009，以太网二层交换芯片U1的LED1A和LED1C连接到网络接口U4的LEDD2和LEDD4，U1的RD1N～RD4N及RD5N～RD8N分别连接变压器芯片U2的TD1N～TD4N引脚和变压器芯片U3的TD5N～TD8N引脚，U1的RD1P～RD4P及RD5P～RD8P分别连接变压器芯片U2的TD1P～TD4P引脚和变压器芯片U3的TD5P～TD8P引脚，U1的TD1N～TD4N及TD5N～TD8N分别连接变压器芯片U2的RD1N～RD4N引脚和变压器芯片U3的RD5N～RD8N引脚，U1的TD1P～TD4P及TD5P～TD8P分别连接变压器芯片U2的RD1P～RD4P引脚和变压器芯片U3的RD5P～RD8P引脚，变压器U2和U3的RX1N～RX4N、RX1P～RX4P、TX1N～TX4N、TX1P～TX4P引脚分别连接到网络接口U4和U5的6A～6D、3A～3D、2A～2D、1A～1D引脚，U1的TXD0、TXD1、TXD2、TXD3引脚连接到控制电路板U6的RXD0、RXD1、RXD2、RXD3引脚，U1的RXD0、RXD1、RXD2、RXD3引脚连接到控制电路板U6的RXD0、RXD1、RXD2、RXD3引脚，U1的MISO/TDO/DO、SS#/TMS/CS、SCK/TCK/SK、MOSI/TDI/DI引脚连接控制板U6的P3、P6、P4、P7引脚。控制电路硬件部分主要由嵌入式CPU、FLASH、EEROM等组成，嵌入式CPU为SAMSUNG公司的S3C4510B，EEROM为ATMEL公司的24C02，FLASH为SST公司的39VF160，CPU芯片U6的D0～D31连接到U7的D0～D15，U6的A0～A21连接到U7的A0～A19，U6的SDA和SCL引脚连接U8的SDA和SCL引脚。整个电路安装在一个密闭壳体中，壳体由金属或非金属制成，并符合煤矿井下安全规范。
参照图5，矿用隔爆兼本安型工业以太环网交换机隔爆外壳共有12个喇叭口(在图五中只能看到前面的六个喇叭口，后面的六个被前面的六个挡住)，左右两边各六个喇叭口，每边前后有两排，每排有三个喇叭口。左边六个喇叭口中最上面前排的一个作为一对上联冗余100Base-Fx单模/多模光纤接口，其它五个为普通单模/多模光纤或者5类双绞线接口；右边六个喇叭口中最上面两个喇叭口前面一个作为另外一对上联冗余的100Base-Fx单模/多模光纤接口，后面一个是电源进线接口，其它四个为普通单模/多模光纤接口或者5类双绞线接口。
以太网数据帧从U4、U5中的某个接口传送到U2或U3中，在其中经过码型转换和波形整形之后，发送给交换芯片U1，U1负责解析以太网数据帧，并通过查阅数据帧的目的地址，确定数据应当发往目的端口、上层控制电路或者以广播的形式发送至其它所有端口。如果不是发往上层控制电路的数据则数据被转发至变压器芯片U2或者U3进行码型转换和整形，然后发送至U4、U5，经传输电缆发往目的主机。发往控制电路的数据在U6中得到处理，如果是请求修改交换机，U6将修改结果保存在U8中并修改芯片U1完成设置；如果是请求操作U7上文件，则U6将读取的数据发往U1，U1再将数据发往目的端口。

Claims (3)

1、一种矿用隔爆兼本安型工业以太环网交换机，电路主要由以太网二层交换芯片、以太网接口变压器、带指示灯的网络接口、嵌入式CPU、EEROM和FLASH芯片相连接组成，其特征是：以太网二层交换芯片U1的LED引脚连接到带指示灯的网络接口U4和U5的LED引脚，U1的发送信号、接收信号引脚分别连接到以太网接口变压器U2和U3的接收信号、发送信号引脚，U2和U3的发送、接收信号引脚分别连接到U4和U5的接收、发送信号引脚，U1的MII引脚连接到嵌入式CPU芯片U6的MII引脚，U1的SPI引脚连接到U6的P3、P4、P6、P7引脚，U6的数据线、地址线分别和FLASH芯片U7的数据线、地址线相连接，U6的IIC引脚连接EEROM芯片U8的IIC引脚，整个电路安装在一个密闭壳体中。
2、根据权利要求1所述的矿用隔爆兼本安型工业以太环网交换机，其特征是：提供冗余的2对上联100Base-Fx单模或多模光纤接口，利用上联冗余光纤接口组成光纤冗余环网。
3、根据权利要求1所述的矿用隔爆兼本安型工业以太环网交换机，其特征是：所述密闭壳体为金属或非金属制成，具有隔爆性质并符合煤矿井下安全规范。
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CN2894109Y (zh) * 2006-04-30 2007-04-25 徐州华讯科技有限公司 矿用隔爆兼本安型工业以太环网交换机

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