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Gyro abnormal temperature drift detection method

A detection method and gyroscope technology, which is applied in the field of gyroscopes, can solve the problems of gyroscope screening, gyroscope missed detection, and difficulty in determining the detection threshold, and achieve the effect of improving speed and accuracy

Active Publication Date: 2019-09-13
深圳大漠大智控技术有限公司
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Problems solved by technology

This method has the following defects: (1) It is possible to misidentify normal temperature drift as abnormal temperature drift, resulting in normal gyroscopes being screened out; (2) It is difficult to determine the detection threshold, which may cause abnormal gyroscopes to be missed

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  • Gyro abnormal temperature drift detection method

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[0029] In order to fully understand the technical content of the present invention, the technical solution of the present invention will be further introduced and illustrated below in conjunction with specific embodiments, but it is not limited thereto.

[0030] It should be understood that in this article, relational terms such as first and second are only used to distinguish one entity / operation / object from another entity / operation / object, and do not necessarily require or imply these entities / There is any such actual relationship or sequence between operations / objects.

[0031] It should also be understood that the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements, but also includes The other elements listed may also include elements inherent to this process, method, article or system. If there are no more restrictio...

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Abstract

The invention discloses a gyro abnormal temperature drift detection method. The method comprises the steps that original angular velocity information of a to-be-detected gyro and original temperatureinformation at a corresponding moment are collected; angular velocity information and temperature information are sampled according to set sampling frequency; whether sampling time reaches set interval time or not is judged; if yes, the angular velocity information and the temperature information which are sampled in the interval time are averaged; whether the temperature change obtained after current temperature is compared with initial temperature at the beginning of collection exceeds a set value or not is judged; if yes, an angular velocity drift rate in the interval from the current temperature to the initial temperature is calculated; whether the drift rate exceeds a set threshold or not is judged; and if yes, it is determined that the to-be-detected gyro has abnormal temperature drift. According to the method, the absolute value of a deviation value is not used, the change rate of the deviation value along with temperature changing is used instead, and therefore detection speedand accuracy are improved.

Description

Technical field [0001] The invention relates to a gyroscope, and more specifically to a method for detecting abnormal temperature drift of the gyroscope. Background technique [0002] The gyroscope is an inertial sensor that measures the angular velocity of an object. It is the core sensor for the heading and attitude calculation of a small UAV. Its performance directly affects the stability of the UAV flight. MPU6000 is a gyroscope widely used in UAVs at present, which has the advantages of high precision and low price. However, the quality of MPU6000 gyroscopes on the market is uneven, and some MPU6000 gyroscopes have abnormal temperature drift problems. The problem of abnormal temperature drift is reflected in that the angular velocity measured by the gyroscope will change sharply at a certain temperature, which will seriously affect the flight stability. Therefore, screening out the gyroscope with abnormal temperature drift in advance is very important to improve the stabil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00
CPCG01C25/005
Inventor 王辰熙
Owner 深圳大漠大智控技术有限公司
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