瓦斯探测报警器.doc
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瓦斯探测报警器,摘 要:煤炭是我国的主要能源，在国民经济中占极其重要的地位。煤矿的生产过程中存在很多安全问题煤矿事故频繁发生,其中煤矿瓦斯事故占到70%以上,因此煤矿瓦斯的监控与治理对煤矿安全生产治理有极其重要的意义,从而，设计一个可靠性好、稳定性高的煤矿瓦斯监控系统，对煤矿的安全生产具有非常重要的作用。本文研制的高低浓度瓦斯传感器可...
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摘 要:煤炭是我国的主要能源，在国民经济中占极其重要的地位。煤矿的生产过程中存在很多安全问题煤矿事故频繁发生,其中煤矿瓦斯事故占到70%以上,因此煤矿瓦斯的监控与治理对煤矿安全生产治理有极其重要的意义,从而，设计一个可靠性好、稳定性高的煤矿瓦斯监控系统，对煤矿的安全生产具有非常重要的作用。
本文研制的高低浓度瓦斯传感器可以对瓦斯浓度进行实时检测，并可以对传感器进行自动校零、非线性补偿。在全量程的处理上，利用MJC4/2.0与MJC4/3.0两种载体催化元件对瓦斯气体进行采样。
在传感器硬件电路设计方面，选用AT89C51单片机作为核心处理器，设计了加热采样电路、信号放大电路、电源模块、A/D转换电路、数据存储电路、红外遥控电路、通信电路、信号输出电路以及单片机系统等。
在软件开发方面，采用结构化设计方法,并采用零点自动补偿程序，传感器可以自动调整零点，提高了检测准确性。
关键词: 高低浓度瓦斯 传感器 单片机 A/D转换
ABSTRACT:Coal is the primary energy in our country，It occupy the strategic position of very importance in the national economy. there are many security problems in the process of coal production，the colliery accident occurrence frequently, and the colliery accident that caused by methane gas has already above 70%.So it has momentous significance in the coal mine safety production to detect and control the methane gas. Therefore, it plays a very important role in the coal mine safety production to design a coal mine methane gas monitoring system with high-reliability and high-stability.
A high -low concentration methane transducer is developed in this paper. The methane transducer can realize real-time detection, automatic zero adjustment and non-linearity compensation. In the full measuring range detection processing, the methane transducer adopts two kinds of carrier-catalysis elements to detection the concentration of the methane.
In the side of hardware, AT89C51 microcontroller is chosen as the core processor, and the power supply circuit, signal amplification circuits, A/D conversion circuit, heating-sampling circuit, infrared remote control circuit, communication circuit, signal output circuit and SCM system are designed.
In the side of software, Using a structured design methodology，and zero automatic compensation algorithm, the methane transducer can adjust the zero point that improve the accuracy
Keywords: transducer coal mine monitoring substation
目 录
摘 要..................................................I
Abstract..............................................II
第1章 绪论...........................................1
1.1 课题研究的目的与意义........................1
1.2 国内外研究现状与发展趋势...................2
1.2.1 热催化型瓦斯检测报警仪...................3
1.2.2 热导型甲烷检测仪...........................3
1.2.3 光学甲烷检测仪..............................3
1.2.4 红外线式瓦斯检测仪.........................4
第2章 瓦斯检测的原理..............................6
2.1瓦斯检测的原理 .................................6
2.2载体催化元件....................................8
2.3 系统的工作过程.................................10
第3章 系统硬件电路的设计.........................11
3.1 系统的总体框图..................................11
3.2 单片机的选择.....................................12
3.3 信号调整放大电路的设计........................16
3.4 传感器的选择......................................17
3.5 A/D转换电路的设计...............................17
3.5.1 ADC0809和单片机连接电路....................18
3.5.2 分频器.............................................19
3.6时钟电路与复位电路的设计........................20
3.7键盘显示电路的设计................................23
3.8 声光报警电路的设计...............................24
3.8.1 光报警电路设计..................................25
3.8.2 声报警电路设计..................................26
3.9 存储器的电路设计..................................27
3.10 红外接收电路的设计..............................28
3.11 排风系统的电路设计..............................30
3.12 通信电路的设计....................................31
3.13 电源电路的设计....................................32
第4章 程序设计...........................................36
4.1 主程序设计............................................36
4.2 ADC0809与89C51的接口程序设计.................41
4.3 显示模块程序设计....................................44
结论 .........................................................46
致谢 .........................................................47
参考文献....................................................48
附录 .........................................................49
CONTENTS
ABSTRACT(CHINESE).........................................I
ABSTRACT......................................................II
CHAPTER 1 INTRODUCTION................................1
1.1 The purpose of the research and its significance....1
1.2 SItuation at home an abroad...........................2
1.2.1 Hot type catalytic gas detection alarmi..
本文研制的高低浓度瓦斯传感器可以对瓦斯浓度进行实时检测，并可以对传感器进行自动校零、非线性补偿。在全量程的处理上，利用MJC4/2.0与MJC4/3.0两种载体催化元件对瓦斯气体进行采样。
在传感器硬件电路设计方面，选用AT89C51单片机作为核心处理器，设计了加热采样电路、信号放大电路、电源模块、A/D转换电路、数据存储电路、红外遥控电路、通信电路、信号输出电路以及单片机系统等。
在软件开发方面，采用结构化设计方法,并采用零点自动补偿程序，传感器可以自动调整零点，提高了检测准确性。
关键词: 高低浓度瓦斯 传感器 单片机 A/D转换
ABSTRACT:Coal is the primary energy in our country，It occupy the strategic position of very importance in the national economy. there are many security problems in the process of coal production，the colliery accident occurrence frequently, and the colliery accident that caused by methane gas has already above 70%.So it has momentous significance in the coal mine safety production to detect and control the methane gas. Therefore, it plays a very important role in the coal mine safety production to design a coal mine methane gas monitoring system with high-reliability and high-stability.
A high -low concentration methane transducer is developed in this paper. The methane transducer can realize real-time detection, automatic zero adjustment and non-linearity compensation. In the full measuring range detection processing, the methane transducer adopts two kinds of carrier-catalysis elements to detection the concentration of the methane.
In the side of hardware, AT89C51 microcontroller is chosen as the core processor, and the power supply circuit, signal amplification circuits, A/D conversion circuit, heating-sampling circuit, infrared remote control circuit, communication circuit, signal output circuit and SCM system are designed.
In the side of software, Using a structured design methodology，and zero automatic compensation algorithm, the methane transducer can adjust the zero point that improve the accuracy
Keywords: transducer coal mine monitoring substation
目 录
摘 要..................................................I
Abstract..............................................II
第1章 绪论...........................................1
1.1 课题研究的目的与意义........................1
1.2 国内外研究现状与发展趋势...................2
1.2.1 热催化型瓦斯检测报警仪...................3
1.2.2 热导型甲烷检测仪...........................3
1.2.3 光学甲烷检测仪..............................3
1.2.4 红外线式瓦斯检测仪.........................4
第2章 瓦斯检测的原理..............................6
2.1瓦斯检测的原理 .................................6
2.2载体催化元件....................................8
2.3 系统的工作过程.................................10
第3章 系统硬件电路的设计.........................11
3.1 系统的总体框图..................................11
3.2 单片机的选择.....................................12
3.3 信号调整放大电路的设计........................16
3.4 传感器的选择......................................17
3.5 A/D转换电路的设计...............................17
3.5.1 ADC0809和单片机连接电路....................18
3.5.2 分频器.............................................19
3.6时钟电路与复位电路的设计........................20
3.7键盘显示电路的设计................................23
3.8 声光报警电路的设计...............................24
3.8.1 光报警电路设计..................................25
3.8.2 声报警电路设计..................................26
3.9 存储器的电路设计..................................27
3.10 红外接收电路的设计..............................28
3.11 排风系统的电路设计..............................30
3.12 通信电路的设计....................................31
3.13 电源电路的设计....................................32
第4章 程序设计...........................................36
4.1 主程序设计............................................36
4.2 ADC0809与89C51的接口程序设计.................41
4.3 显示模块程序设计....................................44
结论 .........................................................46
致谢 .........................................................47
参考文献....................................................48
附录 .........................................................49
CONTENTS
ABSTRACT(CHINESE).........................................I
ABSTRACT......................................................II
CHAPTER 1 INTRODUCTION................................1
1.1 The purpose of the research and its significance....1
1.2 SItuation at home an abroad...........................2
1.2.1 Hot type catalytic gas detection alarmi..
