Flame-proof and intrinsically safe type industrial Ethernet ring exchanger for mine

An intrinsically safe, Ethernet technology, applied in data exchange network, error correction/detection using interleaving technology, business, etc., can solve the collapse of underground communication network, does not have explosion-proof properties, and does not meet the safety specifications of coal mine underground equipment to achieve high-speed transmission, simple installation and maintenance, and improved robustness

Inactive Publication Date: 2006-10-11
徐州华讯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such switches are: (1) do not have flameproof properties, and do not meet the safety specifications of coal mine underground equipment; When a fault occurs during operation, it is easy to cause the collapse of the underground communication network, and the reliability of information t

Method used

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  • Flame-proof and intrinsically safe type industrial Ethernet ring exchanger for mine
  • Flame-proof and intrinsically safe type industrial Ethernet ring exchanger for mine
  • Flame-proof and intrinsically safe type industrial Ethernet ring exchanger for mine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] refer to figure 1 , U1: Ethernet Layer 2 switching chip, which is the core part of the switching circuit, realizes Ethernet Layer 2 switching, and is responsible for forwarding data packets between switching ports.

[0015] U2, U3: Ethernet physical layer transformer chips, each component contains four transformer groups, to realize code conversion and shaping of Ethernet data streams.

[0016] U4, U5: Ethernet interface and its status indicators, each component contains four interfaces, which are the connectors of Ethernet category 5 twisted pair RJ45 connectors, and each interface contains two indicator lights (orange and green respectively) .

[0017] OSC1: 25M crystal oscillator, responsible for generating 25MHz clock pulse signal.

[0018] OSC2: 10M crystal oscillator, responsible for generating 10MHz clock pulse signal.

[0019] U6: Embedded CPU chip, which is the core part of the control circuit, runs embedded operating system and control software on it, which...

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PUM

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Abstract

The disclosed mine-used explosion suppression industrial Ethernet exchange comprises mainly an Ethernet dual-layer exchange chip, a Ethernet access transformer, a network access with work an indicator, an embedded CPU, a memory, and an embedded real-time OS with control software. Wherein, it arranges whole circuit into an explosion-suppression shell. This invention improves robustness and security of underground communication network.

Description

technical field [0001] The invention relates to a mining network communication device, in particular a mining explosion-proof and intrinsically safe industrial Ethernet switchboard suitable for use in an inflammable and explosive environment with a lot of gas and coal dust in a coal mine. Background technique [0002] At present, a known switch is composed of an Ethernet Layer 2 switching chip, an interface transformer and a network interface, and the circuit is installed in an insulating shell to complete the forwarding of Ethernet data. Such switches are: (1) do not have flameproof properties, and do not meet the safety specifications for underground equipment in coal mines; (2) cannot form a ring network with self-healing functions because they do not provide uplink redundant When a failure occurs during operation, it is easy to cause the collapse of the underground communication network, and the reliability of information transmission cannot be guaranteed; (3) the manage...

Claims

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Application Information

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IPC IPC(8): H04L12/04H04L12/44H03M13/27G06F21/00G06Q10/00G06Q30/00G07F17/16G09C1/00H03M13/23H03M13/29H04B1/00H04B1/69H04B1/707H04B7/005H04B7/02H04B7/06H04B7/08H04B7/216H04B7/26H04B14/04H04J13/00H04J13/02H04K1/00H04L1/00H04L1/06H04L1/08H04L1/18H04L9/06H04L9/10H04L9/14H04L9/32H04L12/56H04L27/26H04L69/40H04W8/00H04W48/16H04W52/48
CPCH04L1/1848H04L1/0071H04L1/0041H04L1/1819H04B7/15535H04W52/143H04L47/34H04L27/2602H04L47/14H04L2001/0096H04L63/1441H04L47/28H04W52/225H04L1/1841H04L1/0069H04L63/0428H04L63/0807G07F17/16H04B7/084G06F21/6245H04L1/06H04B7/15507H04L1/0066H04W48/16H04W52/46H04W52/48H04L41/12G06Q20/10H04L5/0044H04L9/32H04J13/12G06Q20/401G06Q50/188H04L63/102H04W28/14H04W52/24H04L5/0042H04L63/065H04L67/306Y10S707/99939H04W52/241H04L1/0045H04L67/14H04W8/005G06Q30/0277H04L1/08H04W52/245Y02B60/50H04B7/0604H04B7/0894H04L67/16G06Q20/425G06Q20/1235G06Q30/0609Y10S707/99936H04L5/0023H04L2209/127H04W52/242H04L5/0083H04L47/10H04L1/1845Y10S707/99933G06Q20/385H04L67/51
Inventor 钱建生李鹏顾军左明文
Owner 徐州华讯科技有限公司
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