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Method, device and mobile terminal for running magnetic sensor calibration algorithm library

A magnetic sensor and algorithm library technology, applied in the field of measurement, can solve the problems of high power consumption of mobile terminals, meaningless calibration of magnetic sensors, etc., and achieve the effect of reducing power consumption

Active Publication Date: 2019-07-02
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the calibration work is done in the background through the magnetic sensor calibration algorithm library. It is necessary to turn on the acceleration sensor, gyroscope, magnetic sensor, etc. to calibrate the magnetic sensor. However, in many scenarios, due to the strong interference of the magnetic sensor And in a changing environment, the calibration of the magnetic sensor is meaningless, resulting in a large power consumption of the mobile terminal

Method used

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  • Method, device and mobile terminal for running magnetic sensor calibration algorithm library
  • Method, device and mobile terminal for running magnetic sensor calibration algorithm library
  • Method, device and mobile terminal for running magnetic sensor calibration algorithm library

Examples

Experimental program
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Embodiment 1

[0020] figure 1 It is a flow chart of a method for running the magnetic sensor calibration algorithm library provided by Embodiment 1 of the present invention. This embodiment is applicable to the case of running the magnetic sensor calibration algorithm library according to the GPS signal strength. The method can be performed by running the magnetic sensor calibration algorithm library, the device for running the magnetic sensor calibration algorithm library can be configured in a mobile terminal such as a mobile phone or a tablet computer, and the method specifically includes the following steps:

[0021] Step 110, when it is detected that the application program of the magnetic sensor is started, the GPS signal strength is obtained.

[0022] Wherein, the application program of the magnetic sensor refers to an application program that needs to call the data of the magnetic sensor. The application program of the magnetic sensor preferably includes a map application or a comp...

Embodiment 2

[0032] figure 2 It is a flow chart of a method for running the magnetic sensor calibration algorithm library provided by Embodiment 2 of the present invention. This embodiment is optimized on the basis of Embodiment 1, and "running the magnetic sensor calibration algorithm library to perform Calibration" is further optimized to "run the magnetic sensor calibration algorithm library; obtain the data of the acceleration sensor, gyroscope and magnetic sensor; calibrate the magnetic sensor according to the data of the acceleration sensor, gyroscope and magnetic sensor", the method Specifically include the following steps:

[0033] Step 210, when it is detected that the application program of the magnetic sensor is started, the GPS signal strength is acquired.

[0034] Step 220, when the GPS signal strength is not less than a preset threshold, run the magnetic sensor calibration algorithm library.

[0035] When the GPS signal strength is not less than the preset threshold, the m...

Embodiment 3

[0042] image 3 It is a flow chart of a method for running the magnetic sensor calibration algorithm library provided by Embodiment 3 of the present invention. This embodiment is optimized on the basis of the above-mentioned embodiments, and the magnetic sensor is calibrated while running the magnetic sensor calibration algorithm library Afterwards, "obtain the data of the calibrated magnetic sensor and report the data of the magnetic sensor to the application program of the magnetic sensor" is added, and the method specifically includes the following steps:

[0043] Step 310, when it is detected that the application program of the magnetic sensor is started, the GPS signal strength is acquired.

[0044] Step 320, when the GPS signal strength is not less than a preset threshold, run the magnetic sensor calibration algorithm library to calibrate the magnetic sensor.

[0045] Step 330, acquire the data of the calibrated magnetic sensor, and report the data of the magnetic senso...

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Abstract

The invention discloses a method, a device and a mobile terminal for running a magnetic sensor calibration algorithm library. The method comprises the following steps that when the state that an application program of a magnetic sensor is started is detected, the GPS (global positioning system) signal intensity is obtained; when the GPS signal intensity is not smaller than the preset threshold value, the magnetic sensor calibration algorithm library operates to calibrate the magnetic sensor. The operation of the magnetic sensor calibration algorithm library can be accurately controlled; the unmeaning calibration by always operating the magnetic sensor calibration algorithm library is not needed, so that the power consumption of the mobile terminal is reduced.

Description

technical field [0001] Embodiments of the present invention relate to measurement technology, and in particular to a method, device and mobile terminal for running a magnetic sensor calibration algorithm library. Background technique [0002] In mobile terminals, navigation software is used more and more frequently, such as Baidu Maps and AutoNavi. When the user opens the navigation software, he will see an arrow indicating the current position and the direction to go. This direction is calculated by reading the data of the magnetic sensor, that is, the direction of the compass is obtained through the data of the magnetic sensor, and the direction of the arrow is obtained by calculating the angle between the direction of the compass and the direction of the mobile terminal. [0003] Since the magnetic sensor is always susceptible to interference, it often needs to be calibrated before it can provide an accurate direction with little deviation. In the prior art, the calibra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F1/3234G06F1/3206G01C25/00
CPCG01C25/00G06F1/3206G06F1/3234
Inventor 张强
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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