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A driving behavior scoring method based on a global positioning system and an inertial sensor

A global positioning system, inertial sensor technology, applied in the field of signal processing

Active Publication Date: 2018-12-28
安徽佳略信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the scoring system on the mobile phone, it is often only possible to use the existing sensors of the mobile phone, such as GPS, inertial sensors and other sensors to calculate the vehicle condition, and then score the current driving behavior

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  • A driving behavior scoring method based on a global positioning system and an inertial sensor
  • A driving behavior scoring method based on a global positioning system and an inertial sensor
  • A driving behavior scoring method based on a global positioning system and an inertial sensor

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Embodiment Construction

[0044] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0045] The present invention utilizes four variables of speed, shifting speed, steering and trajectory to evaluate driving behavior. Based on these four variables, the driving behavior can be scored using the four indicators of speeding time ratio, sharp shift time ratio, sharp steering time ratio and lane change time ratio. The current common smartphones often have global positioning functions and two types of inertial sensors, gyroscopes and accelerometers. Such as figure 1 Shown, the concrete steps of the present invention are as follows:

[0046] The first step is to read the sensor data: use the global positioning system to obtain the positioning result of the vehicle at the sampling point t with the corresponding error envelope matr...

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Abstract

The invention discloses a driving behavior scoring method based on a global positioning system and an inertial sensor. The driving behavior scoring method comprises four basic steps of reading sensordata, calculating moving speed, calculating overspeed, rapid speed change, rapid steering and lane change time ratio and calculating driving behavior score. The positioning error obtained at each timeis considered actively when the moving speed is calculated by GPS, and the error of the moving speed obtained by the difference operation of the positioning results at two different times is calculated, thus realizing the real-time evaluation of the precision of the speed estimation. By adaptively adjusting the delay coefficients, the upper bound of the error of the estimation of the moving speedis controlled or the upper bound is minimized. The driving behavior can be evaluated more comprehensively by defining the time ratio of overspeed, rapid speed change, rapid steering and lane change.Wheel speed information is not required, so it does not need to be embedded in the vehicle electronic control system, and can be used to score driving behavior using independent devices such as smartphones.

Description

technical field [0001] The invention relates to signal processing technology, in particular to a driving behavior scoring method based on a global positioning system and an inertial sensor. Background technique [0002] The evaluation of motor vehicle driving behavior is of great significance for correcting drivers' driving habits, alarming and preventing dangerous situations, customizing personalized auto insurance, and evaluating vehicle prices. The document "Tian Yunong Yudan Wu Zhenyi, a driving behavior evaluation system, application number: 201610729063.X, application date: 2016-08-25" discloses a driving behavior evaluation system, including a vehicle-mounted intelligent terminal, a cloud server, and a mobile client and management background. Use the on-board intelligent terminal to collect vehicle data and process it, and transmit it to the cloud server; the cloud server is equipped with a driving risk scoring model to periodically calculate and score the driving da...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G07C5/08
CPCG06Q10/06393G07C5/08
Inventor 李泽琦
Owner 安徽佳略信息科技有限公司