Driving behavior analysis and feedback method based on smart phone

Abstract

The invention discloses a driving behavior analysis and feedback method based on a smart phone, and the method comprises the steps: obtaining the triaxial acceleration, angular velocity and GPS positioning data of a vehicle by tracking an acceleration sensor, a gyroscope and a GPS positioning system built in the smart phone, and setting a specific threshold value; converting a coordinate system ofthe smart phone into a vehicle coordinate system, analyzing the vehicle data to obtain a moving average value, and determining dangerous driving behaviors as rapid acceleration, rapid deceleration, sharp turn and dangerous lane change of a driver by comparison with threshold values; feeding back a score to an APP and warning the driver, and uploading the score to a traffic management department regularly. According to the analysis and feedback method, as the mobile phone terminal sensor and the GPS are adopted for driving behavior analysis, the problems that in the prior art, the driving behavior analysis process is tedious, the cost is high, and the accuracy is low can be solved.

Description

technical field [0001] The invention belongs to the field of automobile safety, and in particular relates to a driving behavior analysis and feedback method based on a smart phone. Background technique [0002] The increase in the number of motor vehicles has led to a trend of urban road traffic being saturated year by year. Uncivilized driving behaviors such as sudden braking, sharp turns, and sudden lane changes will have a great impact on the safety and smoothness of driving. In a few years, due to the increase in the proportion of electric vehicles with better braking and acceleration performance, uncivilized driving behavior will have a greater impact. [0003] Existing driving recorders can only obtain image data during vehicle driving, and cannot actively analyze various driving behaviors; adding additional data acquisition devices to vehicles for driving behavior analysis, due to different models and the impact of user wishes Difficult to achieve; it is difficult to...

AI Technical Summary

Problems solved by technology

[0003] Existing driving recorders can only obtain image data during vehicle driving, and cannot actively analyze various driving behaviors; adding additional data acquisition devices to vehicles for driving behavior analysis, due to different models and the impact of user wishes Difficult to achieve; analysis by obtaining real-time GPS data of the vehicle, and the existence of GPS data noise makes it difficult to achieve

[0004] In some existing studies, the analysis of driving behavior is done by installing sensors on the vehicle to record the driving behavior data, combined with GPS positioning to evaluate the driving behavior, the hardware cost is an obstacle to the development of driving behavior analysis technology, and using GPS to Detect small distance position changes, the accuracy is not enough

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