基于电力载波的煤矿综采工作面数据采集平台

发布时间：2018-03-29 18:13

本文选题：煤矿安全监控系统　切入点：数据采集分站　出处：《山东科技大学》2017年硕士论文

【摘要】：煤矿安全监控系统对于保障井下生产和运输安全具有至关重要的作用,随着国家对井下生产和运输安全的要求不断提高以及通信和煤矿安全监测技术的蓬勃发展,对煤矿安全监控系统的数字化、智能化、自动化提出了新的标准。煤矿安全监控系统主要由地面主站和井下采集分站两部分构成。传感器数据的采集和预处理主要是通过采集分站来实现,数据的处理则是通过地面主站来进行。采集分站位于井下各类传感器设备和地面主站之间,起到传输枢纽的作用。本文是针对煤矿安全监控系统中的数据采集分站部分进行设计与实现。数据采集分站的设计主要包含三部分,第一部分是综采工作面电力载波模块的设计,是通过电力线载波通信技术,利用井下127V电力线作为数据采集分站与主站间的通信信道。利用已有电力线进行传输,无需另架传输线路,减少了通信线路的布线麻烦,节约了架线成本。设计主要包含载波信号耦合电路、信号滤波电路、信号发送电路、以MC3361BP芯片为主的信号解调电路的设计,利用C8051F330微控制器,采用定时中断方式,产生载波传输所需的FSK调制信号,以及通过数字采样的方式,对解调后的基带信号进行抽样判决。第二部分是隔爆兼本安不间断电源模块的设计,是针对井下易燃易爆的特点,设计出的具有本质安全特性的供电电源。设计主要包含对电池供电电路、127V电网供电电路、输入过压检测电路及输出过流检测电路这三部分电路的设计,通过本安电源模块产生12V本安直流输出,为综采工作面电力载波模块和数据采集模块进行安全供电。第三部分是综采工作面数据采集模块的设计。是用来对井下各类传感器的数据进行采集的核心部分。以STM32作为CPU控制核心电路,设计采集电路实现对井下传感器电流信号、频率信号以及开关量信号的数据采集,并设计RS485接口电路以及CAN总线接口电路实现对智能传感器的数据传输。本文完成了数据采集分站三个模块的设计,并制作出实物,然后分别对各个模块进行调试以及系统的整体调试,实现了基于电力载波的综采工作面数据采集平台的可靠运行。
[Abstract]:Coal mine safety monitoring system plays an important role in ensuring underground production and transportation safety. With the development of communication and coal mine safety monitoring technology, the national requirements for underground production and transportation safety are increasing. Digitization and intellectualization of coal mine safety monitoring system, A new standard is put forward automatically. The coal mine safety monitoring system is mainly composed of two parts: the ground main station and the underground acquisition sub-station. The acquisition and preprocessing of sensor data are mainly realized through the acquisition sub-station. The data processing is carried out through the ground main station. The collection sub-station is located between the various sensor equipment and the ground main station. This paper is aimed at the design and implementation of the data acquisition sub-station in the coal mine safety monitoring system. The design of the data acquisition sub-station mainly consists of three parts. The first part is the design of power carrier module in fully mechanized coal mining face. It uses the power line 127V underground as the communication channel between the data acquisition sub-station and the main station through the power line carrier communication technology. The design includes carrier signal coupling circuit, signal filter circuit, signal transmitting circuit, and signal demodulation circuit based on MC3361BP chip. By using C8051F330 microcontroller and timing interrupt mode, the FSK modulation signal needed for carrier transmission is generated, and digital sampling is used. The second part is the design of flameproof and intrinsically safe uninterruptible power supply module, which is aimed at the characteristics of flammable and explosive downhole. The design mainly includes the design of the battery power supply circuit (127V) power supply circuit, the input overvoltage detection circuit and the output overcurrent detection circuit. A 12V intra-safe DC output is generated through the intra-safe power supply module. The third part is the design of data acquisition module in fully mechanized mining face, which is the core part used to collect the data of all kinds of sensors. STM32 is used as the core circuit of CPU control. The acquisition circuit is designed to collect the current signal, frequency signal and switch signal of downhole sensor. The RS485 interface circuit and the CAN bus interface circuit are designed to realize the data transmission of the intelligent sensor. Then each module is debugged and the whole system is debugged to realize the reliable operation of the data acquisition platform of fully mechanized mining face based on power carrier.
【学位授予单位】：山东科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD76

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