Temperature drift compensation method and device of gyroscope

A technology of temperature drift and compensation method, applied in the field of gyroscope, can solve the problems of poor accuracy and low output accuracy, and achieve the effect of correcting errors, wide application environment and improving accuracy

Active Publication Date: 2017-03-15
BEIJING PICO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a temperature drift compensation method and device for a gyroscope, which are used to solve the problem of low output precision and poor accuracy of the temperature drift compensation scheme in the prior art, and the problem that errors cannot be corrected to the maximum extent

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  • Temperature drift compensation method and device of gyroscope
  • Temperature drift compensation method and device of gyroscope

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Embodiment 1

[0020] figure 1 It is a schematic flow chart of a temperature drift compensation method for a gyroscope according to an embodiment of the present invention, see figure 1 , the gyroscope is set in the terminal device, and the temperature drift compensation method of the gyroscope includes:

[0021] Step S101, after the terminal device is started, collect the temperature data of the gyroscope and use the gyroscope to collect corresponding sets of gyroscope data;

[0022] Step S102, judging whether the terminal device is in a static state, and when it is judged that the terminal device is in a static state, according to the corresponding relationship between the temperature stored in the terminal device and the gyroscope data, and using the currently collected gyroscope data , supplement or update the gyroscope data corresponding to the specified temperature in real time and save it;

[0023] Step S103, calculating the calibration value of the supplemented or updated gyroscope ...

Embodiment 2

[0026] figure 2 It is a schematic flow chart of a temperature drift compensation method for a gyroscope according to another embodiment of the present invention, see figure 2 In this embodiment, the flow of the temperature drift compensation method for the gyroscope of the present invention will be described in detail in combination with specific application scenarios.

[0027] The application scenario of this embodiment is: a terminal device (for example, a head-mounted virtual reality VR device) is provided with a gyroscope and an accelerometer, and the user's head posture information can be obtained by fusion calculation based on the data obtained by the gyroscope and the accelerometer , and then control VR to perform corresponding operations according to the user's head posture. In other embodiments of the present invention, the terminal device may also be an intelligent mobile terminal such as a smart phone.

[0028] see figure 2 , the temperature drift compensation...

Embodiment 3

[0087] image 3 It is a structural block diagram of a temperature drift compensation device of a gyroscope according to another embodiment of the present invention, see image 3 , the gyroscope is set in the terminal device, and the temperature drift compensation device 300 of the gyroscope includes:

[0088] The data collection unit 301 is used to collect the temperature data of the gyroscope after the terminal device is started, and use the gyroscope to collect corresponding sets of gyroscope data;

[0089] The data optimization unit 302 is used to determine whether the terminal device is in a static state. When it is determined that the terminal device is in a static state, according to the corresponding relationship between the temperature stored in the terminal device and the gyroscope data, and using the currently collected gyroscope data, real-time Supplement or update the gyroscope data corresponding to the specified temperature and save it;

[0090] The data compens...

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Abstract

The invention discloses a temperature drift compensation method and a temperature drift compensation device of a gyroscope. The gyroscope is arranged in a terminal device. The temperature drift compensation method of the gyroscope includes: after starting the terminal device, collecting temperature data of the gyroscope, and using the gyroscope to collect corresponding multiple groups of gyroscope data; judging whether the terminal device is in a static state, and when judging out that the terminal device is in the static state, supplementing or updating the gyroscope data corresponding to specified temperature in real time and then saving the gyroscope data corresponding to the specified temperature by using the collected gyroscope data at present according to correspondence between temperature and the gyroscope data, saved in the terminal device; calculating calibration value of the supplemented or updated gyroscope data, and using the calibration value of the gyroscope data to compensate the collected gyroscope data. Compared with the prior art, the temperature drift compensation method and the temperature drift compensation device of the gyroscope improve output accuracy of the gyroscope and correct error caused by temperature drifts to the utmost by collecting the real-time gyroscope data and calculating the calibration value of the gyroscope based on the updated or supplemented gyroscope data.

Description

technical field [0001] The invention relates to the technical field of gyroscopes, in particular to a temperature drift compensation method and device for a gyroscope. Background technique [0002] At present, in the field of virtual reality (Virtual Reality, VR for short) application, it is a common method to use an inertial sensor to obtain head position information. Inertial sensors, typically including gyroscopes. The attitude information can be obtained by fusion calculation of the data obtained by the gyroscope and other related sensors. Among them, the gyroscope data (that is, the angular velocity) is the main basis for calculating the user's head posture. However, the gyroscope data will drift with the change of the sensor temperature, resulting in a deviation in the calculated head posture, which will affect the VR display. Effect. Therefore, in order to obtain accurate user action posture through gyroscope data calculation, it is necessary to compensate the temp...

Claims

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Application Information

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IPC IPC(8): G01C25/00G01C19/00
CPCG01C19/00G01C25/00
Inventor 杨宇马金波舒玉龙
Owner BEIJING PICO TECH
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