可自锁智能煤气泄漏控制器的设计.doc

编号:1532110112 本科毕业设计 可自锁智能煤气泄漏控制器的设计 院系：电子科学与工程系 姓名：李遥遥 学号：1132110112 专业：电子科学与技术 年级：2011级 指导教师：张思维 职称：副教授 完成日期：2015年06月06日摘 要 随着经济和科学技术的高速发展，人们对生活质量的提高和生活环境的改善越来越重视，液化气、煤气进入家庭的使用为人们带来了方便，也改善了城市的环境，但同时也给人们带来了潜在的危险，其中一氧化碳是最主要的危险源。一氧化碳是一种无色无味同时这些气体燃料在使用中，若管道和阀门密封不好，它们泄露出去，轻者引起中毒，重者造成火灾，危及人们的生命财产。所以对于气体的检测与控制就变得很重要了，研究各种气体的检测方法与气体传感器也随之成为一个重要课题。 本设计主要实现管道煤气泄露的测量与报警，系统主要以半导体气体传感器为研究对象，以单片机为核心构成一个具备数据采集、对象控制、结果显示、数据通信等功能的完整系统。通过虚拟仪器LabVIEW进行控制之后，再通过计算机I/O接口输出；输出信号驱动相应的驱动电路，分别控制报警灯、蜂鸣器及切断电路，实现对煤气泄露事故的实时监测及控制；程序实时监测系统状态。 关键词：煤气泄漏；单片机；煤气浓度检测；气敏传感器 Abstract With the rapid development of economy and the science technology, people become pay more and more attention to the quality of life and improving the environment ,and gas into the family the use of convenience for people, but also to improve the urban environment, but also to people with to the potential dangers, including the risk of carbon monoxide is the most important source. If not sealed pipes and valves , they leaked , light caused poisoning , caused by heavy fire , endangering peoples lives and property . For these reasons ,so it is very important for us to inspect and control these gases well. And it is obviously very important to study on the inspection methods and sensors of all kinds of gases. In this paper, the main gas leak measurement and alarm systems to the semiconductor gas sensor for the study in order to constitute a single-chip microcomputer as the core with data acquisition, object control, results showed that features such as data communication system of integrity. Through the Virtual Lab VIEW control apparatus, and then through computer I / O interface output; output signals drive the corresponding driving circuits, respectively, control the alarm light, buzzer and cut off the circuit, the realization of the gas leak on the real-time monitoring and control; procedures real-time monitoring of system state. Key words: gas sensor;Single chip microcontroller; data acquisition;Lab