A Driving Behavior Scoring Method Based on Global Positioning System and Inertial Sensor
A global positioning system, inertial sensor technology, applied in the field of signal processing
Active Publication Date: 2021-06-18
安徽佳略信息科技有限公司
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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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[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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The invention discloses a driving behavior scoring method based on a global positioning system and an inertial sensor, which includes reading sensor data, calculating the moving speed, calculating the time ratio of overspeed, sudden speed change, sudden turn, and lane change, and calculating the driving behavior score. Basic steps: When using the global positioning system to calculate the moving speed, the positioning error obtained at each time is actively considered, and then the error of the moving speed obtained by the differential operation of the positioning results at two different times is calculated, and the real-time evaluation of the accuracy of the speed estimation is realized; By adaptively adjusting the delay coefficient, the error upper bound control of the moving speed estimation is realized, or the upper bound is minimized; the time ratio of overspeed, sudden speed change, sharp steering, and lane change is defined to evaluate the driving behavior, and the driving behavior can be analyzed More comprehensive evaluation; there is no need to obtain wheel speed information, so it does not need to be embedded in the vehicle electronic control system, and independent devices such as smart phones can be used to score driving behavior.
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...
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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