Method and apparatus for measuring rotation speed based on fusion of several kinds of characteristic data

A characteristic data and rotational speed measurement technology, which is applied to measuring devices, devices using electric/magnetic methods, linear/angular velocity measurement, etc., can solve problems such as unstable methods of measuring rotational speed, troublesome installation of existing devices, and low accuracy , to achieve the effect of solving instability and low accuracy, improving the accuracy of speed measurement, and improving the accuracy

Active Publication Date: 2019-10-08
XIAMEN INTRETECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] What the present invention aims to solve is the problem that the existing single characteristic data m...

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  • Method and apparatus for measuring rotation speed based on fusion of several kinds of characteristic data
  • Method and apparatus for measuring rotation speed based on fusion of several kinds of characteristic data

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Embodiment 1

[0031] see figure 1 , a method for measuring a rotational speed by fusing multiple characteristic data, the method comprising:

[0032] Collect more than one type of motor speed characteristic data;

[0033] Processing the rotational speed characteristic data by using an autocorrelation function to obtain a periodic signal of the data waveform;

[0034] The frequency of the corresponding data waveform is obtained through algorithm transformation;

[0035] The corresponding frequency is input into the data fusion prediction model for fusion to obtain the rotational speed value of the motor.

[0036] In this embodiment, the magnetic field data, sound data and vibration data are collected through the Nyquist sampling theorem.

[0037] Processing the rotational speed characteristic data further includes: removing white noise from the collected rotational speed characteristic data by means of low-pass filtering or wavelet processing.

[0038] The algorithm is a fast Fourier tra...

Embodiment 2

[0050] This embodiment specifies that the predicted value of the sound data is A, the predicted value of the vibration data is B, and the predicted value of the magnetic field data is C, wherein the magnetic field data, sound data and vibration data are not disturbed, and the magnetic field data, sound data and vibration data are set The corresponding weights are the same, and the final speed value is (A+B+C) / 3.

[0051] The rest of the steps and devices are the same as in Embodiment 1, and will not be repeated here.

Embodiment 3

[0053] This embodiment specifies that the predicted value of sound data is A, the predicted value of vibration data is B, and the predicted value of magnetic field data is C, wherein the predicted value of sound data is A=0 when the sound data is disturbed, and the predicted values ​​of vibration data and magnetic field data are normal. The predicted value of the sound data is discarded, and the final speed value is (B+C) / 2;

[0054] The rest of the steps and devices are the same as in Embodiment 1, and will not be repeated here.

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Abstract

The invention provides a method for measuring the rotation speed based on fusion of several kinds of characteristic data. The method comprises: collecting more than one kind of motor rotation speed characteristic data; processing the rotation speed characteristic data by using an autocorrelation function to obtain a periodic signal of a data waveform; carrying out algorithm transformation to obtain a frequency corresponding to the data waveform; and inputting the corresponding frequency into a data fusion prediction model for fusion to obtain a rotation speed of the motor. In addition, the invention also provides an apparatus for measuring the rotation speed based on fusion of several kinds of characteristic data. The apparatus includes a sensor module, a display module and a main controlmodule. According to the invention, the rotation speed is calculated based on fusion of several kinds of characteristic data; the stability and accuracy of the rotation speed measurement are improved;and a problem of the mounting trouble of the existing device is solved.

Description

technical field [0001] The invention relates to the field of mechanical rotational speed measurement, in particular to a rotational speed measurement method and device integrating multiple characteristic data. Background technique [0002] Currently on the market, most motor speeds are obtained by measuring one data characteristic. However, only measuring one data characteristic has the problem of low accuracy. After the data characteristic is disturbed, the desired result cannot be obtained; in addition, the existing Most rotational speed measurement devices need to install sensing components on the motor or the rotating shaft. Accurate measurement of the rotational speed can only be achieved with the sensing components. The installation process is cumbersome and has certain requirements on the rotating shaft, making it difficult to achieve convenient measurement. Contents of the invention [0003] The purpose of the present invention is to provide a rotational speed meas...

Claims

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Application Information

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IPC IPC(8): G01P3/00G01P3/44
CPCG01P3/00G01P3/44
Inventor 杨连池吴晓春王志煌
Owner XIAMEN INTRETECH
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