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Method and device for improving application precision of mobile phone compass and readable storage medium

A compass and mobile phone technology, which is applied in the field of mobile phone compass, can solve the problems of mobile phone compass interference and inaccurate pointing, and achieve the effects of avoiding external magnetic field interference, accurate pointing, and improving application accuracy

Inactive Publication Date: 2021-12-31
无锡宇宁智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to propose a method, device and readable storage medium for improving the application accuracy of the mobile phone compass, aiming at solving the technical problem that the mobile phone compass is easily interfered by an external magnetic field and leads to inaccurate pointing

Method used

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  • Method and device for improving application precision of mobile phone compass and readable storage medium
  • Method and device for improving application precision of mobile phone compass and readable storage medium
  • Method and device for improving application precision of mobile phone compass and readable storage medium

Examples

Experimental program
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no. 5 example

[0155] Based on the fifth embodiment, in this embodiment, the estimated value of the three-axis component includes the estimated value of the three-axis geomagnetic component, and the actual value of the three-axis component includes the actual value of the three-axis geomagnetic component, wherein, step S2131, step 2132, step 2133 specifically:

[0156] Step 2137: Perform cross-product processing on the estimated value of the three-axis geomagnetic component and the actual value of the three-axis geomagnetic component to obtain a difference value of the three-axis geomagnetic component.

[0157] Step 2138: Integrate the phase difference of the three-axis geomagnetic components, and add them to the three-axis data of the gyroscope.

[0158] Step 2139: Perform a proportional operation on the phase difference of the three-axis geomagnetic components, and add it to the three-axis data of the gyroscope.

[0159]In this embodiment, gx, gy, and gz represent the components of the gy...

no. 1 example

[0213] Based on the first embodiment, in this embodiment, step S300 includes:

[0214] Step S301: Convert the motion posture data to obtain Euler angles, which include nutation angles, precession angles, and rotation angles.

[0215] Step S302: Make the deflection angle of the compass consistent with the nutation angle to obtain the direction of the compass.

[0216] After obtaining the corrected motion attitude data, it needs to be converted into an Euler angle that is more suitable for the user's imagination or observation. The Euler angle is a set of three independent angular parameters used to determine the position of a fixed-point rotating rigid body. Angle θ, precession angle ψ and rotation angle composition. The conversion method is as follows:

[0217] ψ=atan2(2*(w*x+y*z) / (1-2*(x*x+y*y)))

[0218] θ=arcsin(2*(w*y-z*x))

[0219]

[0220] Wherein, the nutation angle θ is the deflection angle of the compass, and by making the deflection angle of the compass cons...

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Abstract

The invention discloses a method and device for improving the application precision of a mobile phone compass and a readable storage medium. The method comprises the following steps: acquiring three-axis data of a gyroscope, three-axis data of an accelerometer and three-axis data of a geomagnetic sensor; performing fusion processing on the three-axis data of the gyroscope, the three-axis data of the accelerometer and the three-axis data of the geomagnetic sensor to obtain motion posture data of the mobile phone; and analyzing the motion posture data to obtain the direction of the compass. According to the mobile phone compass, the movement posture data of the mobile phone is adopted as the direction, the compass can be prevented from being interfered by an external magnetic field, so that the anti-interference capability of the compass is improved, the application precision of the mobile phone compass is higher, and the direction is more accurate.

Description

technical field [0001] The invention relates to the technical field of mobile phone compass, in particular to a method, device and readable storage medium for improving the application accuracy of mobile phone compass. Background technique [0002] The mobile phone compass is a simple instrument used to determine the direction. It is often used in navigation, geodesy, travel and military affairs. The mobile phone compass eliminates the inconvenience of carrying a compass instrument, and it is simple and convenient to use by putting the instrument into the mobile phone. [0003] With the increasing dependence of users on mobile phones, the application demand of mobile phone compass is increasing day by day, and the accuracy of mobile phone compass has also become one of the key points that users pay attention to. Since the existing mobile phone compass directly adopts the data provided by the geomagnetic sensor, once there is an external magnetic field during use, it is easi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C17/38
CPCG01C17/38
Inventor 陆旭军王雷
Owner 无锡宇宁智能科技有限公司
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