A gyroscope-based electronic compass correction reminder system and its implementation method

Abstract

The invention provides an electronic compass calibration reminding system based on a gyroscope and a realization method thereof. The gyroscope is used to obtain magnitudes of angular velocity of a mobile terminal on the coordinate axes of the three-dimensional coordinate when the mobile terminal is horizontally placed, the rotation angle value of the mobile terminal on a Z coordinate axis is judged through the obtained magnitudes of angular velocity and the preset time, the angle value is compared with the deviation angle value, obtained by an electronic compass, of the mobile terminal within the preset time relative to the directly south direction, and if the deviation angle value of the electronic compass is too large, the indication direction of the electronic compass is wrong and needs to be calibrated, and at the moment, a calibration reminding is given out, so that convenience is provided for users.

Description

technical field [0001] The invention relates to the field of mobile terminal equipment, in particular to a gyroscope-based electronic compass correction reminder system and an implementation method thereof. Background technique [0002] The electronic compass is one of the standard configurations of smart phones, and users can easily use the electronic compass to know the direction. [0003] In the existing technology, the electronic compass has the following two defects: (1) There are a large number of tiny factors that interfere with the magnetic field in the environment, and the long-term accumulation of these tiny factors will cause the compass to be inaccurate, and there is no detection mechanism in the prior art to detect The compass is inaccurate and needs to be corrected, so it will cause the user to use the compass to indicate the wrong direction; (2) When the compass detects a large change in the magnetic field, the user will be prompted to recalibrate the compass,...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the electronic compass has the following two defects: (1) There are a large number of tiny factors that interfere with the magnetic field in the environment, and the long-term accumulation of these tiny factors will cause the compass to be inaccurate, and there is no detection mechanism in the prior art to detect The compass is inaccurate and needs to be corrected, so it will cause the user to use the compass to indicate the wrong direction; (2) When the compass detects a large change in the magnetic field, the user will be prompted to recalibrate the compass, but in fact the compass itself may not be affected. Interference makes the operation of prompting the user this time redundant, wasting the user's time

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