Driving behavior monitoring system and method based on integrated navigation

Abstract

The invention provides a driving behavior monitoring system and method based on integrated navigation, and the system comprises at least one vehicle end which comprises: a satellite positioning device which is used for collecting the satellite positioning data of a vehicle; an inertial navigation device which is used for collecting inertial navigation data of the vehicle; a combined navigation module which is used for performing satellite quality evaluation according to the satellite positioning data and performing fusion processing on the satellite positioning data and the inertial navigation data according to a quality evaluation result to obtain combined navigation data; and a cloud end which is used for receiving and storing the integrated navigation data, performing driving behavior analysis on the vehicle according to the integrated navigation data to obtain a driving behavior monitoring result, giving a corresponding early warning prompt when the driving behavior monitoring result shows that the vehicle is in a dangerous driving state, and sending the early warning prompt to the vehicle end. The system and method have the beneficial effects that vehicle positioning and driving behavior data can be stably and seamlessly acquired, so that high-performance driving behavior analysis is realized, a driver can be timely pre-warned, and the driving safety is effectively improved.

Description

technical field [0001] The invention relates to the technical field of driving behavior monitoring, in particular to a driving behavior monitoring system and method based on integrated navigation. Background technique [0002] With the continuous improvement of national living standards, people pay more and more attention to the safety of driving behavior. According to the statistical analysis of road traffic accidents in recent years, among the main causes of traffic accidents, the dangerous driving behavior of vehicle drivers has always been dominant, which is mainly related to the driver's own weak awareness of safe driving. The driver's own driving habits and the mental state of the vehicle during driving can be reflected in the driving behavior data. Therefore, driving warnings and alarms can be carried out through driving behavior analysis, thereby improving the driver's safety awareness, preventing and reducing road safety accidents. produce. [0003] At present, th...

AI Technical Summary

Problems solved by technology

However, satellite positioning data can only provide three-dimensional position and three-dimensional velocity information, and cannot fully describe the motion information such as various accelerations and angular velocities required for driving behavior. Moreover, in environments such as tall buildings, garages and tunnels, the position and The speed error is too large, and even cannot provide information at all, that is, satellite positioning cannot provide driving behavior data in all environments

Inertial sensors include sensors such as accelerometers, gyroscopes, and magnetometers. Inertial sensors can provide a complete description of various motion information data required for driving behavior. However, the consumer-grade inertial sensors selected by the driving behavior analysis system are low in cost and consistent. The error is not high, and the error is very large; in addition, the inertial sensor installation coordinate system and the vehicle coordinate system are often not consistent, resulting in coupling errors of each axis of the sensor; in addition, the acceleration of gravity will generate acceleration on each axis when the vehicle is going up and downhill. component, resulting in very large errors in acceleration and other data, that is, the inertial sensor cannot provide high-performance driving behavior data under various terrains

Therefore, regardless of satellite positioning, inertial sensors, or a simple combination of the two devices, it is impossible to obtain high-performance driving behavior data in various environments and terrains, and thus cannot provide effective data basis for driving behavior analysis.

Images