Vibration displacement measurement module and method thereof for detecting vibration displacement data of washing machine

A technology of vibration displacement and measurement module, which is applied in the control device of washing machine, washing device, textile and papermaking, etc., can solve the problems of unstable displacement data, complex calculation method and optimization space, etc., and achieve the elimination of vibration interference signal and method. Simple, high-precision effects

Active Publication Date: 2021-07-16
江苏精微特电子股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to improve the accuracy of the displacement data input to the main control of the washing machine, some improvements have been made in the existing technology, but the calculation method is complicated and the accuracy still has a lot of room for optimization, and the displacement data is not stable at the same time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A method for detecting vibration displacement data of a washing machine, comprising the steps of:

[0046] S1, collect the three-axis acceleration data of the outer tub of the washing machine through the sensor;

[0047] S2, filter the three-axis acceleration data according to the rotation speed of the washing machine in sections to filter out interference signals other than the equivalent frequency of the rotation speed, and obtain filtered three-axis acceleration data;

[0048] S3, converting the filtered triaxial acceleration data into corresponding displacement data through secondary integration;

[0049] S4, the displacement data is selected according to the rotation speed of the washing machine and the sub-rotational speed section, and different window values ​​are respectively selected to calculate the moving average value for correction and compensation, to eliminate integral approximation calculation errors and vibration interference signals of various washing ...

Embodiment 2

[0054] A vibration displacement measurement module is used to detect the vibration displacement data of the washing machine, the vibration displacement measurement module includes a sensor and an MCU processor, the sensor collects the triaxial acceleration data of the outer tub of the washing machine, and transmits the triaxial acceleration data to MCU processor; The MCU processor filters out the interference signals beyond the equivalent frequency of the rotating speed through the filter of the three-axis acceleration data according to the rotating speed of the washing machine, respectively, to obtain the filtered three-axis acceleration data; then filter the filtered three-axis acceleration data The three-axis acceleration data is converted into the corresponding displacement data through the second integral; then the displacement data is selected according to the rotation speed of the washing machine and the rotation speed section to calculate the moving average value to calc...

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PUM

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Abstract

The invention discloses a vibration displacement measurement module and a method thereof for detecting vibration displacement data of a washing machine. The method mainly comprises the steps that three-axis acceleration data of an outer barrel of the washing machine are collected through a sensor; an MCU processor filters out interference signals except the rotating speed equivalent frequency from the three-axis acceleration data in sections according to the rotating speed of the washing machine through a filter to obtain filtered three-axis acceleration data; the filtered three-axis acceleration data are converted into corresponding displacement data through quadratic integration; and different window values are selected for the displacement data according to the rotating speed of the washing machine in different rotating speed sections to calculate a moving average value for correction compensation, integral approximate calculation errors and vibration interference signals of various washing machines are eliminated, and high-precision and stable displacement data are obtained.

Description

technical field [0001] The invention relates to the field of household appliances, and more specifically, to a vibration displacement measurement module and a method for detecting vibration displacement data of a washing machine. Background technique [0002] When the washing machine is dehydrating, the vibration generated by the motor during operation becomes the vibration source of the washing machine, and the inner cylinder rotates under the drive of the motor. Due to the existence of clothes, an eccentric load will be generated inside, causing the inner cylinder to be subject to variable load and direction. Eccentric, resulting in vibration, and at the same time, the outer cylinder will also vibrate due to the vibration of the motor and the vibration of the inner cylinder. The outer cylinder is connected to the box through the support device, and the vibration of the outer cylinder will be transmitted to the box through the damper. The washing machine The vibration proce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06F33/48D06F34/16D06F103/24
CPCD06F34/16D06F33/48D06F2103/24Y02B40/00
Inventor 江冠华程修国
Owner 江苏精微特电子股份有限公司
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