Study On Traffic Information Perception By Mobile Terminal

In traffic management, control and modern city traffic planning, the use of intelligent transportation system to comprehensive control of urban traffic problems, can realize the vehicle on the road network of real-time monitoring and management. the unified management of the vehicle into the vehicle monomer of human nature and service management, can not only make the users feel more personalized service of urban traffic and comfortable driving experience, but also makes the city traffic managers could obtain the real-time information from vehicles or drivers. By using a variety of modern intelligent mobile terminal, the information can be obtained will include not only through the positioning of the mobile terminal access to all kinds of traffic parameters, such as average speed.This article research the traffic information perception technology research by mobile terminals. First to establish a research framework about traffic information perception system based on mobile terminal, and then proposes two technology under this framework, respectively is based on the traffic information of mobile terminal active perception technology and media traffic parameter passive sensing technology based on mobile terminals.Based on the mobile terminal traffic information active perception technology, from the media. This part will research on the mobile phone from media APP, such as micro letter, weibo, collection and analysis of the text messages, to get congestion, accidents and control traffic information, weather, etc.Traffic parameter passive sensing technology based on mobile terminals. Traditional fixed detector, can obtain better location traffic parameters (e.g., flow), but it is difficult to obtain interval traffic parameters, such as the section of the average travel time. This section vehicle carried in intelligent mobile terminal, through clustering and information by using the principle of floating car to stretch the average travel time of acquisition and access. This section will consider beidou user terminal and GPS user terminal, to obtain both sections of the average travel time of fusion, to obtain more accurate section of the average travel time, and then with the section length and the ratio of the average travel time to get the average travel speed section.