本文選題：煤礦安全監(jiān)控系統(tǒng)　切入點：數(shù)據(jù)采集分站　出處：《山東科技大學(xué)》2017年碩士論文

【摘要】：煤礦安全監(jiān)控系統(tǒng)對于保障井下生產(chǎn)和運輸安全具有至關(guān)重要的作用,隨著國家對井下生產(chǎn)和運輸安全的要求不斷提高以及通信和煤礦安全監(jiān)測技術(shù)的蓬勃發(fā)展,對煤礦安全監(jiān)控系統(tǒng)的數(shù)字化、智能化、自動化提出了新的標(biāo)準(zhǔn)。煤礦安全監(jiān)控系統(tǒng)主要由地面主站和井下采集分站兩部分構(gòu)成。傳感器數(shù)據(jù)的采集和預(yù)處理主要是通過采集分站來實現(xiàn),數(shù)據(jù)的處理則是通過地面主站來進行。采集分站位于井下各類傳感器設(shè)備和地面主站之間,起到傳輸樞紐的作用。本文是針對煤礦安全監(jiān)控系統(tǒng)中的數(shù)據(jù)采集分站部分進行設(shè)計與實現(xiàn)。數(shù)據(jù)采集分站的設(shè)計主要包含三部分,第一部分是綜采工作面電力載波模塊的設(shè)計,是通過電力線載波通信技術(shù),利用井下127V電力線作為數(shù)據(jù)采集分站與主站間的通信信道。利用已有電力線進行傳輸,無需另架傳輸線路,減少了通信線路的布線麻煩,節(jié)約了架線成本。設(shè)計主要包含載波信號耦合電路、信號濾波電路、信號發(fā)送電路、以MC3361BP芯片為主的信號解調(diào)電路的設(shè)計,利用C8051F330微控制器,采用定時中斷方式,產(chǎn)生載波傳輸所需的FSK調(diào)制信號,以及通過數(shù)字采樣的方式,對解調(diào)后的基帶信號進行抽樣判決。第二部分是隔爆兼本安不間斷電源模塊的設(shè)計,是針對井下易燃易爆的特點,設(shè)計出的具有本質(zhì)安全特性的供電電源。設(shè)計主要包含對電池供電電路、127V電網(wǎng)供電電路、輸入過壓檢測電路及輸出過流檢測電路這三部分電路的設(shè)計,通過本安電源模塊產(chǎn)生12V本安直流輸出,為綜采工作面電力載波模塊和數(shù)據(jù)采集模塊進行安全供電。第三部分是綜采工作面數(shù)據(jù)采集模塊的設(shè)計。是用來對井下各類傳感器的數(shù)據(jù)進行采集的核心部分。以STM32作為CPU控制核心電路,設(shè)計采集電路實現(xiàn)對井下傳感器電流信號、頻率信號以及開關(guān)量信號的數(shù)據(jù)采集,并設(shè)計RS485接口電路以及CAN總線接口電路實現(xiàn)對智能傳感器的數(shù)據(jù)傳輸。本文完成了數(shù)據(jù)采集分站三個模塊的設(shè)計,并制作出實物,然后分別對各個模塊進行調(diào)試以及系統(tǒng)的整體調(diào)試,實現(xiàn)了基于電力載波的綜采工作面數(shù)據(jù)采集平臺的可靠運行。
[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.
【學(xué)位授予單位】：山東科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TD76

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