Equivalent statistical method for number of sharp turns of vehicle

Abstract

The invention relates to an equivalent statistical method for the number of sharp turns of a vehicle, which comprises the following steps: calculating the angle difference of a driving direction between adjacent records through vehicle sparse GPS / Beidou data and vehicle scheduling data to obtain the number of the turns of the vehicle and corresponding turn record data; calculating and obtaining the average vehicle speed vi and the average vehicle angular speed oi between the adjacent turning record data; based on the average speed vi and the average angular speed oi, calculating to obtain theaverage value and variance of the curve; calculating the probability value of judging a turn as a sharp turn, if the probability value is less than or equal to the preset probability threshold value P, an equivalent sharp turn is accumulated. The equivalent statistical method uses local average value to replace instantaneous state to process sparse GPS / Beidou data, and the number of the equivalentsharp turns of the vehicle is judged and identified through the probability threshold value to obtain the number of the equivalent sharp turns of the vehicle. The statistical method can achieve the effect of accurately counting the number of sharp turns of the vehicle only by processing the sparse GPS / Beidou data, and is convenient to implement and low in cost.

Description

technical field [0001] The invention relates to the field of physics, in particular to a vehicle running monitoring technology, in particular to an equivalent statistical method for the number of sharp turns of a vehicle. Background technique [0002] In order to carry out risk assessment and control of vehicle driving behaviors and help traffic safety, there are currently a variety of vehicle operation supervision platforms and vehicle auxiliary driving equipment, which have reduced the incidence of traffic accidents to a certain extent. However, the existing various vehicle supervision application platforms require a large number of supervisors to invest, and supervision depends on the experience and judgment of supervisors. Experienced personnel need long-term training. Compared with automatic computer processing, not only the quality cannot be completely consistent Moreover, the manual processing capacity is limited, and it is difficult to achieve effective, comprehensiv...

AI Technical Summary

Problems solved by technology

However, vehicle-mounted ADAS equipment involves too many privacy and information security issues, and is expensive, which is not easy to promote and apply. On the other hand, even simple GPS\Beidou data also has high costs in transmission and processing, and cannot be transmitted. Record GPS\ Beidou data every moment

The number of "sharp turns" of the vehicle during driving is one of the important indicators for judging the driving behavior of the vehicle, but the instantaneous velocity value and angular velocity value at each moment cannot be obtained through sparse GPS\Beidou data (5S-10S). value or the threshold value of the angular velocity value to judge, resulting in the inability to accurately count the number of sharp turns of the vehicle

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