A method and device for judging the uphill and downhill state of a vehicle

A technology for vehicle driving and state determination, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as inaccuracy
CN103632062BInactive Publication Date: 2017-01-25BEIJING QIANTU FANGYUAN SOFTWARE TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING QIANTU FANGYUAN SOFTWARE TECH
Publication Date
2017-01-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method and a device for determining uphill and downhill running states of a vehicle by utilizing an acceleration sensor and a gyroscope. The method comprises the following steps of 1, acquiring data such as vehicle speed, a gyroscope reading and accelerometer readings, wherein the vehicle speed is V(t), the gyroscope reading is gyro(t), and the accelerometer readings are ax(t), ay(t) and az(t), and correspond to three directions of a tri-axis accelerometer respectively; 2, calculating turning angular speed according to the gyroscope reading; 3, measuring a mounting angle; 4, calculating a suspension corrected value by using a suspension correction coefficient; 5, calculating a turning corrected value; 6, calculating a real-time slope and an average slope, and judging a slope type. According to the method and the device, a current slope state of the vehicle can be more accurately judged.
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Description

technical field

[0001] The invention relates to the field of automotive electronics, in particular to a method and device for judging the uphill and downhill state of a vehicle by using an acceleration sensor and a gyroscope. Background technique

[0002] When the vehicle is stationary, the slope of the vehicle can be easily calculated by eliminating the influence of the installation angle of the accelerometer through the measurement data of the accelerometer. When the vehicle is running, the measured value of the accelerometer will be affected by the acceleration and deceleration of the vehicle due to the change of the vehicle speed, and because the vehicle suspension is an elastic system, the acceleration and deceleration of the vehicle will have a significant impact on the suspension angle, which in turn will affect the accelerometer. measured value. On the other hand, when the vehicle is turning, due to the vehicle's running attitude, the turning centripetal force will ...

Claims

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