煤气泄漏自动检测系统——周涛(加软件)

煤气泄露自动检测系统

摘要

随着经济和科学技术的快速发展,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。由于这些原因，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。

本论文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Lab VIEW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：气体传感器，单片机，数据采集，Lab VIEW

GAS LEAK DETECTION SYSTEM AUTOMATICALLY

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 people's 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 VIEW

目录

前言 (1)

第1章绪论 (2)

1.1论文研究来源、目的和意义 (2)

1.1.1 论文研究来源 (2)

1.1.2 论文研究目的和意义 (2)

1.2可燃性气体报警器的国内外现状 (3)

1.3本论文主要任务 (4)

第2章煤气泄露自动测试总体设计 (5)

2.1设计要求 (5)

2.1.1煤气泄露测试的功能 (5)

2.1.2煤气泄露测试系统框图 (5)

2.1.2煤气泄露测试的各个功能模块 (6)

2.2设计原理 (6)

2.2.1气体传感器介绍 (7)

2.2.2气体传感器的选定 (7)

2.3数据处理 (9)

2.3.1传感器非线性信号处理 (9)

2.3.2数字滤波处理 (9)

第3章煤气泄露自动测试硬件设计 (11)

3.1温度补偿电路 (11)

3.1.1 OP07低噪声高精度运算放大器 (11)

3.1.2温度补偿 (12)

3.2模/数转换器ADC0809 (12)

3.2.1 ADC0809的介绍 (12)

3.2.2引脚功能 (13)

3.2.3主要特性 (14)

3.3单片机AT89C51的概述 (15)

3.3.1 AT89C51简介 (15)