Analysis method and device for judging driving state of automobile

Abstract

The invention relates to an analysis method and an analysis device for judging the driving state of an automobile. The analysis method comprises the steps of obtaining standard acceleration straight lines on multiple coordinate axes; obtaining an analysis acceleration value detected by an acceleration sensor in each coordinate axis direction; fitting the analysis acceleration value in each coordinate axis direction to obtain a corresponding analysis acceleration straight line; determining the driving state of the automobile according to a coordinate axis type of the coordinate axis corresponding to the analysis acceleration straight line when an included angle between the analysis acceleration straight line and the standard acceleration straight line is larger than or equal to an angle threshold value. According to the analysis method and the analysis device, the acceleration value detected by the acceleration sensor and obtained by an automobile-mounted terminal is analyzed and computed, the driving state of the automobile can be quantitative judged, and high accuracy is realized; moreover, and the acceleration sensor has high accuracy when being used for collecting the acceleration value and cannot be affected by the intensity of a collection signal, so as to further improve the accuracy of judging the driving state of the automobile.

Description

technical field [0001] The invention relates to the technical field of vehicle monitoring, in particular to an analysis method and device for judging the driving state of a vehicle. Background technique [0002] During the driving process of the car, there may be driving states such as rapid acceleration, rapid deceleration, sharp turning and sudden braking. The driving state in which the car accelerates to a higher speed in a short period of time is a rapid acceleration state; the driving state in which the car decelerates to a smaller speed in a short time is a rapid deceleration state; The driving state of turning quickly within a short period of time is the sharp turning state; the driving state of the car decelerating to zero or even stopping in a relatively short period of time is the state of sudden braking. The driving recorder and other terminals on the car can monitor the driving state of the car in real time, judge whether the car is in the state of rapid acceler...

AI Technical Summary

Problems solved by technology

[0004] However, the inventor found through research that in the process of monitoring the driving state of the vehicle, the positioning signal of the GPS positioning system may be unstable, resulting in the lack of GPS position information. In this way, the vehicle speed calculated based on the incomplete GPS position information will produce errors. , which leads to the judgment error of the driving state of the car, and the accuracy is low

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