Analysis Of Vehicle Driving State Based On Mobile Sensor

Intelligent Transport Systems is an emerging field which has been proposed recent years,and its main content is a combination of advanced technology,which will be used in organic entire transportation management system in order to establish a real-time,accurate,and efficient transportation integrated management and control system.This one has an important part is to get the information of the vehicle,the vehicle's indicators and vehicle status information such as binding,and thus promote the development of intelligent information management system,strengthen the security and reliability of the entire transport system.With mankind enters the era of mobile Internet,the role of mobile phones in people's daily lives become irreplaceable,its internal sensors are more and more people are familiar with,but also because the phone in distributed sensing platform has a high potential for development,nowadays the mobile phone is becoming a major perception internet.As used in this paper,a cell phone as IntelliSense terminal,which is incorporated together with the vehicle,using the phone's built-in sensor to obtain a mobile phone while driving a vehicle sensor data,the traveling state based on the data analysis of the vehicle.The main contents and results of this paper research in the following three areas:(1)starting from the bottom of the phone,complete the sensor data based Android HAL layer acquisition system can acquire acceleration,gyroscope,magnetometer,GPS and other sensor data;(2)designed a Kalman filter combines mobile sensor fusion algorithm,and for sensor data preprocessing,and experiments show that it can be a good fusion of multi-sensor data acquisition attitude angle and make it smooth.Improved dynamic time warping algorithm,so that it can handle acceleration and attitude angle sensor data fusion data to improve recognition performance analysis with the state,including the ability to analyze a turn,change lanes,braking on downhill,including a variety vehicle travel state;(3)the sensor data acquired by the real scene,to verify the feasibility of the algorithm,and experimental results of the analysis are given vehicle state,the analysis showed that the well has been running state of the vehicle.