摘要：科技的发展使得世界范围内的人均车辆保有量迅速增高，因车内空气污染导致的事故也越发频繁的发生。本课题针对这个现象和问题设计一种车内空气检测系统。
本文研究的车内空气检测系统是以AT89S52单片机为系统的核心控制机构，再加上传感器电路、AD转换电路、显示电路和按键控制电路等硬件电路，能够实现自动检测车内的甲醛、苯和粉尘浓度以及温湿度，并有显示和报警功能的设计。设备接车载电源，有良好的续航能力。并使用LCD1602点阵式液晶显示屏显示，让人直观的感受到车内有毒气体的浓度。同时，在设计中还加入了声光报警的功能，可以实现当读数超标时对人的报警提醒。
本设计采取的硬件设备体积小，价钱低，精度高，易操作，可适用于各种车型。将其用于车内可了解车内实时空气质量情况，避免因车内空气污染而导致的事故发生。
关键词：车内空气检测；AT89S52；空气污染；VOC气体
Abstract：The development of science and technology makes the world's per capita vehicle ownership increased rapidly, the accident caused by the car air pollution become more and more frequent. In this paper, an in-vehicle air detection system is designed for this phenomenon and problem.
In this paper, the interior air detection system is based on AT89S52 microcontroller as the core of the system control mechanism, coupled with the sensor circuit, AD conversion circuit, display circuit and key control circuit and other hardware circuits, to achieve automatic detection of car formaldehyde, benzene and Dust concentration and temperature and humidity, and display and alarm function of the design. Equipment connected to the car power supply, it makes system have a good endurance. And the use of LCD1602 dot matrix LCD display, people intuitive feel the concentration of toxic gases inside the car. At the same time, in the design also joined the sound and light alarm function, you can achieve when the reading exceeded the alarm to the people.
The design of the hardware equipment to take small, low price, high precision, easy to operate, commonly used in various models. Will be used in the car can understand the real-time air quality, to avoid the air pollution caused by the accident.
Keywords: Interior air detection; AT89S52; Air pollution; VOC gas
目录
摘要 V
目录 VII
第一章绪论 1
1.1选题目的及研究意义 1
1.2.1国外研究的现状及其发展 2
1.2.2国内研究的现状及其发展 3
1.3本文的主要研究内容 4
1.4本文的章节安排 4
第二章车内空气质量的基本介绍 5
2.1车内空气品质介绍 5
2.1.1车内污染物种类及来源分析 5
2.1.2车内空气品质的几点认识 5
2.2车内空气质量测试的指标及主要污染物介绍 6
2.3车内空气质量的检测方法 7
2.4本章小结 8
第三章车内空气检测系统的总体设计 9
3.1检测方法的可行性分析 9
3.2系统总体设计方案 AT89S52单片机车内空气检测系统设计+源代码:http://www.youerw.com/zidonghua/lunwen_204599.html