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Noise source positioning method and system

A positioning method and positioning system technology, applied in the direction of measuring ultrasonic/sonic/infrasonic waves, measuring devices, instruments, etc., can solve the problems of large errors, external noise interference, low position resolution and unsuitable micro devices, etc., and achieve positioning accuracy High, high position resolution, to meet the effect of noise source positioning requirements

Pending Publication Date: 2020-12-18
CHINA ELECTRONICS PROD RELIABILITY & ENVIRONMENTAL TESTING RES INST THE FIFTH ELECTRONICS RES INST OF MIITCEPREI LAB
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide an improved noise source location method and system for the low position resolution of the traditional noise location method, which is not suitable for micro-devices, and is susceptible to external noise interference and large errors.

Method used

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  • Noise source positioning method and system
  • Noise source positioning method and system

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Embodiment Construction

[0040] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0041] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical", "horizontal", "left", "right", "upper", "lower", "front", "rear", "circumferential" and...

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Abstract

The invention provides a noise source positioning method and system. The noise source positioning method is used for positioning an action part generating abnormal noise in a micro device, and comprises the following steps: acquiring a motion characteristic frequency of a preset action part of the micro device; obtaining a first vibration spectrum of the preset action part when the micro device has abnormal noise and a second vibration spectrum of the preset action part when the micro device has no abnormal noise; determining a noise characteristic frequency of the micro device according to the first vibration spectrum and the second vibration spectrum; and determining the motion component which generates abnormal noise in the micro device according to the motion characteristic frequency of the preset motion component and the noise characteristic frequency. According to the noise source positioning method, the noise source can be positioned more accurately, the positioning precision and the position resolution are improved, and parts generating lightweight noise in the micro device can be effectively positioned.

Description

technical field [0001] The invention relates to the technical field of noise detection, in particular to a noise source location method and system. Background technique [0002] Noise is a common problem in machinery and electromechanical products. The generation of noise not only affects the comfort of personnel, but also endangers people's physical and mental health. At the same time, noise has a strong correlation with product reliability. For products, the occurrence of noise problems often means that the product has reliability problems in terms of mechanical structure, which is usually caused by poor structural design, and long-term use of poor structural design may cause failure modes such as wear and tear of mechanical products. Therefore, the identification and location of noise sources is the key to noise control. To solve the problem of structural noise, it is first necessary to accurately locate the source of the noise, analyze the mechanism of noise generation...

Claims

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Application Information

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IPC IPC(8): G01H17/00
CPCG01H17/00
Inventor 解江张泽朱军华申海东李劲
Owner CHINA ELECTRONICS PROD RELIABILITY & ENVIRONMENTAL TESTING RES INST THE FIFTH ELECTRONICS RES INST OF MIITCEPREI LAB
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