基于手机定位的交叉路口交通流数据采集方法

为了实现对城市道路交叉口交通流数据的全面采集、减少成本、提高效率，提出以手机为交叉口交通流信息获取源的思路。研究了将手机定位数据（运动速度、经纬度）转化为交通流数据的方法。通过检测空间和检测单元的确定，根据用户的运动速度和位置信息，按照步行、自行车、小汽车和公交车将不同手机用户的出行方式进行了准确判断，最终实现了交叉口交通量、车流流向和延误数据的自动采集。

Method to Collect Traffic Flow Data of Urban Road Intersection Based on Mobile Positioning

In order to achieve the overall traffic flow data of urban road intersection with less cost and higher efficiency, this paper proposes a new idea to present mobile phone as the source of intersection traffic information collection. Moreover, the paper focuses oil the method to convert the mobile phone positioning data （speed, latitude and longitude） into traffic flow data. Furthermore, by defining the detecting space and detecting unit, the method can accurately distin- guish mobile phone user＇s travel mode as walking, cycling, cars and buses according to his speed and positioning information. Finally, the traffic volume, traffic flow and delay of urban road intersection can be automatic acquired by the method.