基于SMACSS的环境空气质量查询分析系统

论文总字数：16765字

目 录

1 引言····················································1

1.1研究背景及意义··························································1

1.2 国内外空气质量研究现状··················································1

1.3 开发工具的介绍··························································2

2 系统规划···············································2

2.1 需求分析································································2

2.1.1系统功能需求······················································· 2

2.1.2 系统可行性分析······················································4

2.1.3 系统功能分析························································4

2.2 系统流程图······························································5

3 实现过程···············································6

3.1 系统页面样式设计规则（SMACSS设计规则）································· 6

3.2 数据库数据内容介绍····················································· 6

3.2.1 二氧化硫···························································7

3.2.2 二氧化氮···························································7

3.2.3 一氧化碳···························································7

3.2.4 臭氧·······························································7

3.2.5 可吸入颗粒物·······················································7

3.3 数据库模型·····························································8

3.3.1个人信息表························································· 8

3.3.2数据信息表························································· 8

3.4 数据分析操作···························································9

3.5 查询过程实现··························································10

4 系统功能展示··········································11

4.1查询结果······························································ 11

4.2 添加数据······························································13

4.3 增加修改用户信息······················································13

5 总结···················································14

基于SMACSS的环境空气质量查询分析系统

陆鑫黎

,China

Abstract:With the continuous development of social economy,the environmental air quality of our country is becoming more and more serious. Based on the study of environmental air quality index, an environmental air quality analysis system is built in this paper. The system realizes the user to increase, delete, change, check the operation of the air pollutant data and environmental air quality, and can analyze the data which is inputted by users themselves. This paper gives a detailed description of the environmental air quality analysis system based on the information given by the nine air quality monitoring stations in Nanjing city. At first, the system is divided into modules, and each module of the system is explained in detail. Secondly, the demand of this system is analyzed in this paper. Then the rules of the front-end SMACSS are introduced in detail At last, this paper explains the data content, database model and the principle of the analysis of the data. I hope this system can meet the requirement of the user for the analysis of air quality index.

Key Words: Ambient air quality index; SMACSS ; Angular.js

１　引言

1.1研究背景及意义

随着国际社会工业化的不断发展和进步，环境空气污染问题日渐严重。在现代的环境中，人们的很多行为将会增加空气中的污染物质，比如，人们燃烧各种燃料将会排放大量的有害物质，燃烧煤炭^[1]将会排放大量的烟尘和二氧化硫，燃烧石油将会排放二氧化硫和一氧化碳。在生产过程也会产生污染物质，如水泥厂、钢铁厂的生产过程将会排放的大量烟尘和废气。在交通运输过程中时也会产生空气污染物质，举个例子，汽车、火车等交通工具会排放出大量的尾气，而且在这些排放出的大量尾气中会包含氮氧化合物、氮氢化合物、一氧化碳和铅尘等空气污染物。这些空气污染物质严重影响了环境的空气质量，空气污染程度可以通过空气质量指数来反映出来。

空气质量指数^[2]于2012年上半年正式出台，是用于定量描述空气质量状况的指数。空气质量指数英文是Air Quality Index，简称AQI。在世界各国指定的空气质量标准是不一样的，因此，AQI的取值范围也各不相同。在我国，我们采取的AQI标准和美国采用的标准相似，AQI取值范围位于0~500之间。空气质量指数检测内容包含各种空气污染物质，常见的有二氧化硫、二氧化氮、一氧化碳、臭氧和悬浮颗粒物^[3]。其中，悬浮颗粒物的种类可分为以下两种类型。一种类型颗粒物是颗粒粒径小于等于10μm的颗粒物，称为PM10；另一种类型是粒径小于等于2.5μm的颗粒物，被称为PM2.5，PM2.5是PM10之下的一个更加详细的分类。

本文通过对空气质量的研究，希望制作一个面向大众的空气质量指数分析系统，可以随时录制空气质量指数，并对空气质量指数进行分析研究。使用户能够对录入空气质量数据，查看每天空气污染物指数，同时也能够查看每天的首要污染物，首要污染物在每天的空气污染物中的占比，以及每月中不同空气污染物在首要污染物中的占比等各种不同的数据。

1.2 国内外空气质量研究现状

研究空气的质量指数最早是由美国提出的，是美国环保署在20世纪70年代研究制定出来的，标准名称为污染标准指数^[4]。而环境空气质量指数^[5]（AQI）是在1999年7月最早由美国环保署正式发布的。在此次发布的空气质量中，把可入肺颗粒物PM2.5加入至检测评价体系中。在此之后，英国、香港、日本等其他的发达国家和发达地区也相继制定了适合于当地发展情况的空气质量指数。在2005年世界卫生组织发布了《空气质量准则——颗粒物、臭氧、二氧化氮和二氧化硫》，并同时修订了4中典型污染物的空气质量参考值^[6]。由世界卫生组织定义的标准值是所有国家的标准中最为严格的。2004-2010年美国环保署对臭氧、颗粒物、铅等基准文件进行了升级^[7]。

我国最早制定的空气质量标准始于2000年。于2012年，我国对环境空气质量标准又增加了新的标准。与此同时，国家环保部提出了对新标准的分期实施计划。新版的空气质量检测标准中，将环境空气质量功能区有三类减为了两类。同时在新定义的环境空气质量标准中规定了不同污染物浓度评价的时间间隔。只有符合要求的环境空气质量数据才能够进行计算评估，否则就是为无效数据。

1.3 开发工具的介绍

剩余内容已隐藏，请支付后下载全文，论文总字数：16765字

相关图片展示：