基于VDSL2技术和LIN总线的采煤机远程控制数据通讯系统的设计

发布时间：2018-09-07 09:36

【摘要】：近年来，，随着我国科技水平的不断提高，煤矿自动化水平也取得了长足的进步，但是在煤炭综采技术装备的性能指标、自动化技术水平等方面，我国与国际先进水平仍然有着明显的差距。由于我国综采工作面设备繁多、环境复杂，而且工作人员众多，给煤炭安全生产带来了较大的威胁和压力。因此加大在煤矿综采技术装备研发方面的投入，实现煤炭综采工作面无人化，成为当前煤矿井下自动化采掘技术发展的必然要求。而采煤机作为综采工作面的主要设备，能否实现其远程控制对实现无人综采工作面有着重要的意义。本课题来自2011年太原市一流自主创新基地建设：30套/年智能化综采工作面控制系统产业化项目(2011CXJD0219),作为该项目的重要子课题，本文设计研发了一套采煤机远程控制数据通讯系统，系统包括了基于VDSL2(Very-high-bit-rate Digital Subscriber Loop2)技术的远程通讯设备、基于LIN(Local Interconnect Network)总线技术的采煤机控制键盘以及基于力控组态软件的采煤机监控软件。该系统实现了采煤机控制信息的采集、采煤机工况信息的反馈以及信息的双向远程传输，主要研究内容如下：第一，针对目前远程通讯技术的不足，本文创新性地将最新的宽带接入技术VDSL2应用到矿用自动化设备。选用国内首款VDSL2核心芯片，根据其特点研究确定了VDSL2核心芯片同前端混合电路及以太网FHY(物理层)芯片结合的设计方案，并完成了电路板原理图和PCB板的设计。第二，创新性地将LIN总线技术应用到采煤机控制键盘。根据设计需求研究采用飞思卡尔微控制器和LIN总线接口芯片结合的方案设计了基于LIN总线的数字量采集模块DI和数字量输出模块DO，包括其硬件电路的设计和软件程序的开发，并结合已成熟应用的DP-LIN转换模块，研究实现了通过LIN总线传输控制信息并转化为DP总线信号后与PLC通讯的技术方案，减少了进口数据采集设备和信号输出设备的购买，降低了生产成本。第三，根据综采工作面实时监控的要求并结合组态软件的特点，设计了基于力控组态软件的采煤机监控软件，完成了监控界面的设计和脚本程序的开发。第四，考虑到采煤机远程控制数据通讯系统将面向市场，笔者对系统进行了大量的试验和修正工作。首先测试了VDSL2远程通讯模块的带宽、抗疲劳性和抗干扰性；然后对采煤机控制键盘与PLC主机的数据交换情况进行了测试；最后搭建系统并编写PLC测试程序，测试了系统的基本功能。测试结果表明系统达到了现场应用的要求。采煤机远程控制数据通讯系统目前已经应用于四川绿水洞等多个国内煤矿，该系统的应用不仅提高了煤矿开采的自动化水平，丰富了采煤机的控制方式，更是解放了煤矿井下工作人员，实现了综采工作面无人化。该系统的日趋成熟为我国井下无人工作面开采技术达到国际先进水平奠定了良好的技术基础。
[Abstract]:In recent years, with the continuous improvement of science and technology in China, the level of coal mine automation has also made considerable progress, but there is still a clear gap between China and the international advanced level in terms of the performance index and automation technology level of coal fully mechanized mining equipment. The large number of personnel has brought great threat and pressure to the safety production of coal. Therefore, increasing investment in the research and development of fully mechanized coal mining technology and equipment and realizing the unmanned fully mechanized coal mining face have become the inevitable requirement of the development of underground automatic mining technology in coal mine. Remote control plays an important role in realizing the unmanned fully mechanized coal mining face.
This topic comes from the first-class independent innovation base construction in Taiyuan in 2011: 30 sets / year intelligent fully mechanized coal face control system industrialization project (2011 CXJD0219). As an important sub-project of this project, this paper designs and develops a set of shearer remote control data communication system, including the system based on VDSL2 (Very-high-bit-rate Digital Subsc). The remote communication equipment of Riber Loop 2 technology, the control keyboard of Shearer Based on LIN (Local Interconnect Network) bus technology and the monitoring software of Shearer Based on force control configuration software. The system realizes the collection of shearer control information, the feedback of shearer working condition information and the bidirectional remote transmission of information. The main research contents are as follows. As follows:
Firstly, in view of the shortcomings of the current remote communication technology, this paper innovatively applies the latest broadband access technology VDSL2 to mining automation equipment. Selecting the first domestic VDSL2 core chip, according to its characteristics, this paper studies and determines the design scheme of the combination of VDSL2 core chip with front-end hybrid circuit and Ethernet FHY chip, and completes the design. The schematic diagram of the circuit board and the design of PCB board.
Secondly, the LIN bus technology is applied to the shearer control keyboard innovatively. According to the design requirement, the digital acquisition module DI and digital output module DO based on LIN bus are designed by combining Freescale microcontroller with LIN bus interface chip, including the design of hardware circuit and the development of software program. With the mature application of DP-LIN conversion module, the technical scheme of communicating with PLC after transmitting control information through LIN bus and converting it into DP bus signal is studied and realized. The purchase of imported data acquisition equipment and signal output equipment is reduced, and the production cost is reduced.
Thirdly, according to the requirements of real-time monitoring in fully mechanized coal face and the characteristics of configuration software, a shearer monitoring software based on force control configuration software is designed, and the design of monitoring interface and the development of script program are completed.
Fourthly, considering that the remote control data communication system of shearer will face the market, the author has done a lot of experiments and amendments to the system. Firstly, the bandwidth, anti-fatigue and anti-interference of the VDSL2 remote communication module are tested; then the data exchange between the shearer control keyboard and the PLC host is tested; finally, the data exchange between the shearer control keyboard and the PLC host is built. The basic functions of the system are tested by compiling the PLC test program. The test results show that the system meets the requirements of field application.
The remote control data communication system of Shearer has been used in many domestic coal mines such as Sichuan Green Water Tunnel. The application of this system not only improves the automation level of coal mining, enriches the control mode of shearer, but also liberates the underground coal mine staff and realizes the unmanned of fully mechanized coal mining face. The underground mining technology of unmanned working face has reached the international advanced level and laid a good technical foundation.
【学位授予单位】：太原理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD655;TD421.6

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