Fully mechanized coal mining face data transmission system and data transmission method thereof

Abstract

The invention provides a fully mechanized coal mining face data transmission system and a data transmission method thereof. The system comprises multiple network access devices, a switch, a monitoring center, a field bus device and a network device. One of the network access devices is connected to the monitoring center through the switch. Each network access device is connected with the adjacent network access devices through multi-carrier-frequency division multiplexing wide-band transmission lines to form a first transmission channel. Each network access device is further connected with the adjacent network access devices through communication buses to form a second transmission channel. Each network access device is connected with the field bus device through a field bus and is connected with the network device through a wide-band transmission line. The network device is communicated with the monitoring center through the first transmission channel. The field bus device is communicated with the monitoring center through the first transmission channel or the second transmission channel. The fully mechanized coal mining face data transmission system is provided with a redundancy transmission channel, the system reliability is improved, and the system follow-up maintenance is also simplified.

Description

technical field [0001] The invention relates to the technical field of fully mechanized mining face, in particular to a fully mechanized mining face data transmission system and a data transmission method of the fully mechanized mining face data transmission system. Background technique [0002] With the continuous development of informatization, networking, and intelligence in fully mechanized mining working faces, the level of unmanned and less-manned working faces continues to increase, and the requirements of automation control for the adaptability of working conditions continue to deepen. With the continuous increase in the types and quantities of production equipment, sensors, network video, voice, intelligent terminals and other equipment, the demand for on-site business data access and transmission in fully mechanized mining faces is increasing. [0003] The traditional working face data access and transmission system is mainly centered on each manufacturer's own mon...

AI Technical Summary

Problems solved by technology

[0005] All data depends on the Ethernet transmission of a single working surface, and there is no dedicated transmission channel for the system's own management signaling. When the network traffic load increases or the network is unstable, the real-time performance and reliability of data transmission are easily affected and cannot meet the requirements. On-site high-priority control data transmission requirements, especially when the intermediate networking equipment or lines in the system fail, the abnormality detection and alarm information cannot be transmitted to the monitoring platform in a timely and effective manner;

[0006] Due to the extremely limited and special space conditions on the working face, this type of system adopts the networking mode of switch ports in series, without a normal network convergence architecture. When the coverage site is large and the number of access points The data flow to the head increases linearly, and problems such as network data conflicts, delay increase, and network jitter will increase significantly, resulting in a decrease in network transmission quality

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