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A speed calculation method, system, electronic device and readable storage medium

A speed calculation and speed technology, which is used in the testing/calibration of speed/acceleration/shock measurement equipment, speed/acceleration/shock measurement, instruments, etc. Improve accuracy and reduce the effect of acceleration reference transformation

Active Publication Date: 2021-02-02
GEER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the acceleration data collected by the existing acceleration sensor is often mixed with influencing factors such as noise data and signal offset due to accuracy problems, resulting in the acceleration collected by the acceleration sensor is not the actual acceleration. The speed obtained after integration will be much larger than the real value due to the cumulative error generated during the integration process
[0004] In order to reduce the error, the existing technology often aims at the inaccurate problem of the acceleration sensor measuring the static state during the movement (that is, the non-zero speed is obtained after integrating the acceleration measured by the acceleration sensor in the static state) to improve the measurement accuracy. , improved algorithms such as zero-speed compensation algorithm and multi-axis dynamic switching algorithm have appeared
However, this type of algorithm improves the measurement accuracy by forcibly correcting the speed that clearly belongs to the static state to 0 or correcting its acceleration and / or speed to a certain extent. It is only suitable for short-distance and static situations. , cannot be applied in actual scenarios where the distance is long or whether there is a static state cannot be determined, and the scope of application is extremely limited

Method used

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  • A speed calculation method, system, electronic device and readable storage medium
  • A speed calculation method, system, electronic device and readable storage medium
  • A speed calculation method, system, electronic device and readable storage medium

Examples

Experimental program
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Effect test

Embodiment 1

[0080] See figure 1 , figure 1 A flow chart of a speed calculation method provided in the embodiment of the present application, which includes the following steps:

[0081] S101: Use the acceleration sensor to measure the acceleration of the target object to obtain the measured acceleration;

[0082] This step aims to obtain the real-time acceleration of the target object by measuring the acceleration sensor moving together with the target object, and call the acceleration data directly measured by the acceleration sensor as measured acceleration to distinguish it from other subsequent processed accelerations.

[0083] Wherein, the acceleration sensor may select one triaxial acceleration sensor capable of measuring acceleration in three directions at the same time, or three uniaxial acceleration sensors capable of measuring acceleration in one direction respectively.

[0084] Further, due to the existence of equipment errors, it is also possible to perform the operation of ...

Embodiment 2

[0107] See figure 2 , figure 2 It is a flowchart of a method for calculating the average acceleration value of the motion window in the speed calculation method provided by the embodiment of the present application. This step aims to provide a preferred method for calculating the average acceleration value of the motion window for the first embodiment S103, including The following steps:

[0108] S201: Determine whether the N time windows arranged before the motion window are all motion windows;

[0109] Wherein, N is a positive integer greater than or equal to 1, preferably, N can be specifically set to 2. That is, it is judged whether the two time windows arranged before the current motion window are also motion windows.

[0110] S202: Use the arithmetic mean value of multiple accelerations included in the motion window as the average acceleration value of the motion window;

[0111] This step is based on the judgment result of S201 that the N time windows arranged bef...

Embodiment 3

[0117] See image 3 , image 3 It is a flowchart of a method for respectively correcting the acceleration process and the deceleration process in the speed calculation method provided by the embodiment of the present application. This embodiment is based on the first and second embodiments, by adding Research on the deceleration process, find out where it does not match the actual movement situation, and use corresponding correction methods to make it closer to reality, including the following steps:

[0118] S301: Correct the measured acceleration according to the actual acceleration reference to obtain the acceleration after reference calibration;

[0119] This step is the same as S104, for specific explanations, please refer to S104, which will not be repeated here.

[0120] S302: Determine the number of acceleration points and the number of deceleration points in the motion window according to the size relationship between the acceleration after benchmark calibration and...

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Abstract

The present application discloses a speed calculation method. First, determine which time windows belong to the motion window according to the magnitude of the acceleration, and on the basis of determining the motion window, by using the acceleration mean value of each motion window as the actual acceleration reference of the corresponding motion window, The acceleration data obtained by each motion window is not based on the same acceleration reference (that is, "0" reference), but the acceleration after reference calibration is calculated according to the actual acceleration reference of each motion window, which can effectively reduce the Accumulated errors lead to the problem of acceleration reference transformation, thereby improving the accuracy of the acceleration used to calculate the velocity, which also improves the accuracy of the final calculated velocity, and can be applied to a wider range of practical application scenarios. The present application also discloses a speed calculation system, an electronic device and a computer-readable storage medium at the same time, which have the above beneficial effects.

Description

technical field [0001] The present application relates to the technical field of acceleration data processing, and in particular to a speed calculation method, system, electronic equipment and computer-readable storage medium. Background technique [0002] With the development of electronic information technology, people put forward higher requirements on the measurement accuracy of some common parameters. This application will provide a solution for how to improve the measurement accuracy of speed. [0003] According to the relationship between velocity and acceleration in the mathematical formula, it can be known that the result of integrating acceleration once is velocity. However, the acceleration data collected by the existing acceleration sensor is often mixed with influencing factors such as noise data and signal offset due to accuracy problems, resulting in the acceleration collected by the acceleration sensor is not the actual acceleration. The speed obtained after...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01P21/00
CPCG01P21/00
Inventor 张士林陈维亮
Owner GEER TECH CO LTD