Vibration Meter

Project Objective

Suppose you have a desk in an office, you sit at your desk most of the day programming. Every now and then a collegue walks past your desk causing your desk to shake even your monitor might shake. How can you measure this vibration?

Method

Initial idea is to use accelerometer connected to a computer which logs and analysis in real time the vibration of the floor.

Implementation

• MPU6050 accelerometer with I2C interface
• Raspberry pi receives data
• Use Python interface https://pypi.org/project/mpu6050-raspberrypi/
• Log data with X interval and over Y time
• Fourier transform the data
• Use 10 Hz low pass filter
• Integrate signal to µm
• Inverse fourier transform
• Display the data

Nice to have

• Camera to detect person walking by
• Supervised machine learning, classifying persons

Dependancies

• $ pip3 install numpy
• $ pip3 install threading
• $ pip3 install scipy
• $ pip3 install matplotlib
• $ sudo apt install python3-tk

Class interfaces

Data collection

Methods

• getData()
• getSpan()
• changeSpan(s)

Data collection periodic

Methods

• getData()
• getSpan()
• changeSpan(s)
• getInterval()
• changeInterval(ms)