Motion sensor temperature drift correction method and system, and electronic device

Abstract

The invention discloses a motion sensor temperature drift correction method and system, and an electronic device. The method comprises the steps: step S1, setting a device to be tested, and reading the temperature T0 inside a motion sensor, the acceleration speed and data initial values of six axes of a gyro by an upper computer program; step S2, supplying power to a heating circuit; step S3, recording bias of the six axis data of the motion sensor and the initial values at each temperature point by the upper computer program; step S4, writing the bias value in a memory of the device; and step S5, in the use of the device, according to the current motion sensor temperature, adopting a linear approximation compensation method to compensate the motion sensor data, and thus obtaining more accurate motion sensor data. The motion sensor temperature drift correction method and system provided by the invention can solve the problem of calibration and compensation of the temperature drift of the motion sensor, and have relatively high efficiency and relatively low cost.

Description

technical field [0001] The invention belongs to the technical field of electronic equipment, and relates to an electronic equipment, in particular to a temperature drift correction method of a motion sensor of an electronic equipment; meanwhile, the invention also relates to a temperature drift correction method of a motion sensor. Background technique [0002] At present, MEMS acceleration sensors and gyroscopes are widely used in portable electronic devices such as mobile phones; because the measured values ​​of acceleration sensors and gyroscopes will drift with temperature changes. However, applications such as mobile phones do not require high precision, or the ambient temperature changes relatively little, so the temperature drift is basically negligible. [0003] But on VR (virtual reality) devices, high-precision motion sensors are very critical components, and the accuracy has a great impact on the device experience. In addition, since VR devices generally consume ...

AI Technical Summary

Problems solved by technology

In addition, since VR devices generally consume a lot of power and generate considerable heat, the impact of temperature on sensors is more significant

[0004] Usually, it is inconvenient to calibrate the temperature drift during the production process, and equipment such as an incubator is required, and because the heat conduction path is also long, it takes a long time for the temperature of the incubator to adjust to the temperature change of the sensor itself, and there is no mass production. sex

The general practice is not to do temperature compensation, or only test a set of data for several samples in the laboratory as the basis for compensation, but there is no way to test each individual, resulting in inconsistent performance of the produced products

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