摘要：众所周知，路径规划可提供各种出行路线。比如最短距离最少时间等。这对于人们的出行提供了很大的便利性。它是导航系统的基本功能之一。且它的优化标准可以多种多样，如距离和时间等。为了满足人们多样的出行需求，很多指标都可以作为优化标准。PM2.5对人们的身体健康和大气污染产生了严重影响，将PM2.5浓度作为优化标准来进行路径规划，可以给人们的日常出行提供一种更为健康的路径选择。

为了实时获取路网PM2.5数据，首先设计了一种基于浮动车法的城市PM2.5检测方式，能够有效解决现有监测点固定、监测数量有限、监测成本高、监测数据更新时间长、在具体位置处PM2.5值不够精确等问题，可大大提高城市PM2.5具体位置数据的精确程度，且能够实现城市的全面覆盖。然后提出了一种新的城市健康出行规划的方法，根据检测到的城市PM2.5值针对居民的出行起始点和目的地规划出空气质量良好和路程合适的最佳路线，为居民的出行提供便利。

关键词 浮动车 PM2.5检测 嵌入式系统 路径规划

毕业设计说明书外文摘要

Title Planning and Realization of Healthy Travel Route Based on PM2.5 Concentration

Abstract：As we all know, path planning can provide a variety of travel routes. Such as the shortest distance, the least time, which provides a great convenience for people to travel. It is one of the basic functions of the navigation system. And its optimization criteria can be varied, such as distance and time. In order to meet people's perse travel needs, many indicators can be used as an optimization standard. PM2.5 has a serious impact on people's health and air pollution. PM2.5 concentration as an optimization standard for path planning, can give people a more healthy path selection in daily trip.

In order to obtain PM2.5 data in real time, a PM2.5 detection method based on floating vehicle method is designed. It can solve several following problems. First, the existing monitoring points are fixed. Second, a limited number of high monitoring costs is monitored. Third, monitoring data’s update need a long time. Fourth, in the specific location, PM2.5 value is not accurate. It can greatly improve the city PM2.5 specific location data accuracy, and can achieve the city's comprehensive coverage. Then we put forward a new method of urban health travel planning. Based on the detected PM2.5 value of the city, the best route for good air quality and proper route is planned for the traveler's starting point and destination. This gives the residents a great deal of convenience.

Keywords  Floating car  PM2.5 monitoring  Embedded Systems   Path Planning

目 次

1 绪论 1

1.1 选题背景及意义 1

1.2 国内外研究现状 1

1.2.1 PM2.5监测技术研究现状 1

1.2.2 路径规划研究现状 2

1.3 本文研究的主要内容 2

1.4 本文的组织结构 3

2 浮动车系统 5

2.1