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

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...

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