《基于AT89C52单片机的煤矿瓦斯测控系统的设计》-毕业论文（设计）.doc

煤矿瓦斯测控系统的设计 摘 要 对煤矿井下瓦斯浓度连续检测是现代煤矿生产中必不可少的重要工作。鉴于传统模拟式瓦斯报警仪精度不高且不能数字显示，研制出了一种单片机控制的瓦斯检测系统。该装置将单片机的适时控制及数据处理功能与传感技术相结合，不仅可精确检测井下空气中的瓦斯浓度，还能根据瓦斯浓度的大小及时发出声光报警信号，或切断井下工作面 电源并向备用风机发出启动控制命令，而且可通过数字显示装置显示出瓦斯浓度。 本设计以单片机AT89C52为核心，通过瓦斯检测电路对井下的瓦斯浓度进行检测，并把瓦斯浓度变换成相应的模拟信号，经过放大、A/D转化后送入单片机，一方面通过LED显示当前瓦斯浓度，另外一方面当瓦斯浓度超过预设的上限值时给出声光报警，并马上启动风机。 关键词：瓦斯报警，控制系统，气体检测，单片机 Design of coal monitoring and control system Abstract The coal mine gas concentration for a modern coal mine detection is essential for the production of important work. In view of the traditional analog Gas Alarm accuracy is not high and can not figure that developing a microcontroller control of the gas detection system. The device will timely control SCM and also control data processing functions and sensor technology，not only can accurately detect underground gas concentration in the air，but also according to the size of the gas concentration promptly issued a sound and light alarm signal，anding cuting off the mine face.The power start a backup fan controling orders，but also through digital display devices show that the gas concentration. SCM AT89C52 is the core for the design，through the underground gas detection circuit to detect the gas concentration and gas concentration for transforming into the corresponding analog signal，after amplification，A/D transformed are put into the SCM，on the one hand through LED display the current gas concentration，the other hand when the gas concentration are more than the default values，Chu Sheng-alarm and immediately start faning. Keywords：Gas Alarm，Control System，Gas Checking，MCU 目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc201554264 摘要 PAGEREF _Toc201554264 \h I HYPERLINK \l _Toc201554265 Abstract PAGEREF _Toc201554265 \h II HYPERLINK \l _Toc201554266 1 绪论 PAGEREF _Toc201554266 \h 1 HYPERLINK \l _Toc201554267 1.1 煤矿瓦斯测控系统设计的发展和现状 PAGEREF _Toc201554267 \h 1 HYPERLINK \l _Toc201554268 1.2 煤矿瓦斯测控系统设计的解决方法 PAGEREF _Toc201554268 \h 1 HYPERLINK \l _Toc201554269 1.3 设计要求