Uporaba mikrokrmilnika Arduino za merjenje vibracij z namenom monitoringa

Hafner, Gal (author), Boltežar, Miha (mentor), Čepon, Gregor (co-mentor)

Merjenje vibracij ter njihova obdelava in prikaz je pogost način iskanja napak ter nenormalnega delovanja naprav v industriji. V ta namen smo v zaključni nalogi predstavili osnove vibracij ter opisali način obdelave in grafičnega prikaza izmerkov vibracij. Razložili smo pomen digitalizacije in pretvorbe signala. Razvili smo cenen merilni sistem za meritev vibracij ter obdelavo in prikaz izmerkov v realnem času. Sistem je zasnovan na Arduino platformi, obdelava podatkov pa poteka na računalniku v programskem paketu MATLAB. Merilni sistem smo testirali v kontroliranih pogojih v laboratoriju ter na realnem primeru. Dobljeni rezultati so presenetljivo natančni glede na zmogljivosti postavljenega merilnega sistema. Na koncu smo izvedli raziskavo dosegljive frekvence vzorčenja ter razložili vpliv neenakomernega intervala vzorčenja.

• Language: Slovenian
• Keywords: vibracije, mikrokrmilnik, arduino, pospeškomer, hitra Fourierova transformacija, merjenje
• Work type: Bachelor thesis/paper
• Organization: FS - Faculty of Mechanical Engineering
• Year: 2017
• PID: 20.500.12556/RUL-95456
• Publication date in RUL: 20.09.2017

Secondary language

• Language: English
• Title: Application of Arduino microcontroller for measuring vibration during monitoring process

Abstract

Measuring vibration is a common way of error detection or abnormal device behaviour in industry systems. For the purposes of this assignment we presented the basics of vibrations and described the method of vibration data processing and their graphic display on the computer. We presented the importance of digitalization and signal conversion. A cheap measuring system was developed for measuring, proccessing and displaying vibration data in real time. The data acquisition was performed with Arduino microcontroller. Proccessing and display of the vibration data was performed on a personal computer with MATLAB software package. The measuring system was initially tested in a controlled environment in the laboratory. After successful tests in the laboratory the measuring system was used on a working machine. The results obtained were suprisingly accurate with regard to the capabilities of the measuring system components. Finally, we identified the maximum sampling frequency and analyzed the impact of the uneven sampling interval.

• Keywords: vibration, microcontroller, arduino, accelerometer, fast Fourier transform, measurements