摘要
为了满足煤矿井下的综合自动化系统的要求,充分考虑低压电力线扩频通信经济,方便,抗干扰能力强,以及可靠性高等特点,论文设计了基于扩频通信技术的煤矿井下的综合自动化系统。
论文简要的介绍了扩频通信的基本原理,讨论了扩频技术在电力线载波上的应用,结合煤矿井下电力信道特点制定了解决的方案。整个扩频系统由上位机系统和下位机系统两个部分组成,主要包括主控、扩频载波,语音处理,电源等模块,其中下位机系统主要完成对采集的传感器数据进行中介处理,传感器数据包括各设备运行状态,参数设置等,下位机将这些数据经过扩频载波芯片SC1128扩频调制后发送到AC127V电力线上,这些数据经过SC1128芯片解扩后被上位机系统接收,上位机将显示数据上传给MT-8000人机交互界面,通过人机交互界面实时监测煤矿井下设备运行情况。
论文完成了系统的软、硬件设计和调试,并在实验室条件下得到验证。实验证明将扩频通信技术应用于煤矿井下低压电力线的是可行的,从而可以完成煤矿井下综合自动化系统的构建。
For to meet the requirements of the integrated automation system in the underground coal-mine, and based on full consideration of characteristic of the spread spectrum communication on the low-voltage electric, which is economic, convenient, strong anti-jamming, high reliability, so this paper designed the integrated automation system in the underground coal-mine based on the spread spectrum communication technology.
This paper introduces the basic principle of spread spectrum communication, and discussed the application of the spread spectrum technology in the power line, then proposed the solution that based on the characteristics of the power line in the underground coal mine. The system based on the spread spectrum is consisted by the upper computer and the lower computer, including control module, spread spectrum module, audio processing module, the power supply module, and the lower level computer system teleport the data ,which come from the collected sensors, to AC127V power lines after modulation by the spread spectrum carrier chip SC1128, the data includes status of the running equipment and the setting of the parameters and etc, then these data received by the upper computer system after the demodulation by the SC1128 chip, and the then display this data to the MT-8000 screen, through the man-machine interface real-time monitoring status of running equipment in the underground coal mine.
The paper has designed the software and the hardware, and tested the circuit, which validate the theory is right. Experiments prove that it is feasible for the spread spectrum communication is being applied in underground low power lines, thus can be completed integrated automation system construction in the underground coal-mine.
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