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Calibration method for accelerometer in IMU and related device

A technology of accelerometer and calibration method, applied in the field of electronics, can solve problems such as complicated operation and increased cost

Inactive Publication Date: 2020-10-27
蘑菇车联信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in most cases, the accelerometer is calibrated and corrected by means of a multi-axis turntable, but this not only complicates the operation, but also increases the cost by introducing professional equipment

Method used

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  • Calibration method for accelerometer in IMU and related device
  • Calibration method for accelerometer in IMU and related device
  • Calibration method for accelerometer in IMU and related device

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Embodiment Construction

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some, not all, embodiments of the application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0041] It should be noted that the terms "comprising" and "having" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or process that includes a series of steps or units. The apparatus is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to the process, method, product or apparatus. A detailed ...

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Abstract

The embodiment of the invention discloses a calibration method for an accelerometer in an IMU and a related device. The method comprises the steps of setting a reference line of the accelerometer, taking the reference line as a reference, and obtaining an acceleration region area Sup above the reference line and a deceleration region area Sdown below the reference line in the process that the accelerometer completes one-time acceleration and deceleration, and according to the relationship between the acceleration region area Sup and the deceleration region area Sdown, adjusting calibration parameters of the accelerometer, wherein the calibration parameters comprise a scale coefficient kup corresponding to the acceleration region and a scale coefficient kdown corresponding to the deceleration region. According to the technical scheme provided by the embodiment of the invention, the accelerometer can be calibrated by utilizing the size relationship of acceleration and deceleration areas.

Description

technical field [0001] The present application relates to the field of electronic technology, and in particular to a method for calibrating an accelerometer in an IMU and related devices. Background technique [0002] IMU (Inertial Measurement Unit, Inertial Measurement Unit) is a device composed of a gyroscope and an accelerometer, which is used to measure the attitude angle (or angular rate) and acceleration of an object. Because of its small size, light weight, and low cost, it is widely used in equipment that requires motion control, such as automobiles and robots, and is also used in occasions that require precise displacement calculations with attitude, such as submarines, aircraft, and missiles. And spacecraft inertial navigation equipment, etc. [0003] As one of the core components of the IMU, the accelerometer is susceptible to interference from various factors, making its accuracy low, so it is particularly important to calibrate the accelerometer. In most cases...

Claims

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Application Information

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IPC IPC(8): G01P21/00
CPCG01P21/00
Inventor 费再慧贾双成朱磊李倩李成军
Owner 蘑菇车联信息科技有限公司