Method and device for detecting driving behavior information based on OBD (on-board diagnostic) terminal

Abstract

The embodiment of the invention provides a method and device for detecting driving behavior information based on an OBD (on-board diagnostic) terminal. The OBD terminal integrates a triaxial accelerometer; the triaxial accelerometer is used for measuring one group of or multiple groups of triaxial accelerated speeds; the method comprises the following steps: calculating the one group of or multiple groups of triaxial accelerated speeds as one group of or multiple groups of actual accelerated speeds; sequentially adopting the one group of or multiple groups of actual accelerated speeds to perform direction calibration, and working out one group of or multiple groups of direction vectors and a group of or multiple groups of turning vectors; judging whether the ratio of the direction vectors to the turning vectors exceeds a preset threshold so as to determine the corresponding driving behavior information. According to the invention, the driving behavior can be detected in real time, and the detecting accuracy can be improved; in addition, the installation of the OBD terminal does not affect the attractive appearance and the manipulation of a vehicle by a driver, so that the OBD terminal is plug-and-play, the OBD terminal application is simplified, initialization positioning is reduced or avoided, and the user experience is further improved.

Description

technical field [0001] The present invention relates to the technical field of vehicle electronics, in particular to a method for detecting driving behavior information based on an OBD (On-Board Diagnostic) terminal and a device for detecting driving behavior information based on the OBD terminal. Background technique [0002] With the rapid development of my country's economy and the continuous improvement of people's living standards, the number of vehicles has increased rapidly, and the number of vehicle traffic accidents remains high. Therefore, cultivating good driving habits of drivers is extremely important for safe driving of vehicles. [0003] The formation of driving habits lies in the accumulation of driving behaviors. Therefore, detecting driving behaviors becomes the key to cultivating driving habits. As the functions of OBD terminals become more and more perfect, more and more individuals and teams use OBD terminals to detect driving behaviors. [0004] At pre...

AI Technical Summary

Problems solved by technology

[0008] However, the use of OBD terminals to transmit GPS data to the background, data transmission takes time, there is a delay, resulting in the detection of driving behavior is not real-time, and the detection of OBD terminals is mostly limited to track records and vehicle parameter data, resulting in some OBD terminals It does not have the function of driving behavior detection, or the detection of driving behavior is not accurate. In addition, if the installation orientation of the fixed OBD terminal needs to be re-arranged inside the vehicle, it will affect the appearance and the driver's control of the vehicle. If the OBD terminal is installed Do initialization positioning, initialization positioning needs to do multiple calibration operations, such as the calibration of static time parameters, the calibration of travel time parameters, etc., which makes the OBD terminal inconvenient to use, unable to plug and play, and poor user experience

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