Cellphone motor vibration testing method

A technology of vibration testing and testing methods, applied in measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., can solve the problems of being easily affected by external environmental interference, increasing hardware investment costs, and picking up unstable signals to achieve test results. Accurate and reliable, lower test cost, enhanced anti-interference effect

Inactive Publication Date: 2017-04-19
惠州市璇瑰智能自动化技术有限公司
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because this method is an external sensor, the pick-up signal is unstable, easily affected by external environmental interference, and increases the cost of hardware investment, and the detection circuit is also relatively complicated.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] The present invention will be described in further detail below in conjunction with specific embodiments.

[0012] Compared with the existing testing methods, the mobile phone motor vibration testing method disclosed in this embodiment does not need to add other vibration sensors, and the signal acquisition is more accurate. Specifically, the mobile phone motor vibration testing method includes:

[0013] First, start the motor of the mobile phone to make the motor start to work. When the motor is started, if the motor does not vibrate normally, it means that the motor of the mobile phone is abnormal. If it vibrates normally, proceed to the next step for further analysis.

[0014] After the motor starts to vibrate, pick up the motor vibration signal through the microphone that comes with the mobile phone, and convert the motor vibration signal into an electrical signal;

[0015] Then use the FFT algorithm (fast algorithm of discrete Fourier transform) to analyze the fre...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a cellphone motor vibration testing method, and the method comprises the steps: starting a cellphone motor and enabling the motor to start to work; picking up a motor vibration signal through a cellphone microphone, and converting the motor vibration signal into an electric signal; carrying out the spectral analysis of the electric signal collected by the microphone through an FFT algorithm, comparing the information of electric signal with a normal motor spectral information, and judging whether a test motor is working normally or not. Because the microphone of the cellphone is employed as a signal collection tool and the microphone and the vibration motor are disposed in a cavity of the cellphone, the method can pick up the motor vibration signal more effectively, greatly improves the anti-interference capability, carries out the spectral analysis of the data through the FFT algorithm, analyzes and judges the quality of the vibration function of the motor through analyzing and quantifying the specific indexes of the motor vibration: main frequency point, main frequency amplitude and noise amplitude, is more accurate and reliable in testing result, greatly simplifies the needed clamping tool and equipment, and reduces the testing cost.

Description

technical field [0001] The invention relates to an improved technology of a mobile phone motor vibration test method. Background technique [0002] The traditional mobile phone production line uses manual testing to test motor vibration, without any quantitative indicators, and completely relies on manual to judge whether it is a good product. In order to realize the quantitative test of motor vibration and eliminate human factors, there is an external sensor on the market to receive the motor vibration signal, and then analyze the data through software to quantify the indicators to determine whether it is a good product. However, because this method is an external sensor, the picked-up signal is unstable and easily affected by external environmental interference, and the cost of hardware investment is increased, and the detection circuit is also relatively complicated. Contents of the invention [0003] The purpose of the present invention is to provide an accurate and r...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00
CPCG01H17/00
Inventor 赖建辉
Owner 惠州市璇瑰智能自动化技术有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap