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Method and device for determining uphill and downhill running states of vehicle by utilizing acceleration sensor and gyroscope

A technology of acceleration sensor and vehicle driving, which is applied in the direction of instruments, special data processing applications, electrical digital data processing, etc., and can solve problems such as inaccuracy

Inactive Publication Date: 2014-03-12
BEIJING QIANTU FANGYUAN SOFTWARE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Therefore, in the prior art, there is a problem of inaccuracy when judging the uphill and downhill state of the vehicle

Method used

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  • Method and device for determining uphill and downhill running states of vehicle by utilizing acceleration sensor and gyroscope
  • Method and device for determining uphill and downhill running states of vehicle by utilizing acceleration sensor and gyroscope
  • Method and device for determining uphill and downhill running states of vehicle by utilizing acceleration sensor and gyroscope

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Embodiment Construction

[0094] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0095] Due to the problems mentioned in the background technology section in the prior art, when the present invention uses the acceleration sensor and gyroscope to determine the state of the vehicle driving up and down, it can be corrected from three aspects, namely: accelerometer installation angle correction , suspension corrections and cornering corrections.

[0096] On the one hand, due to the installation error of the accelerometer, it is necessary to measure the installation angle for a specific vehicle; For a measurement, at an unmeasured temperature, the corresponding measurement data can be estimated based on the data corresponding to the measured temperature.

[0097] figure 1 A flowchart of a method for judging the u...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 马涛
Owner BEIJING QIANTU FANGYUAN SOFTWARE TECH
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