Konstrukcija enostavne Kibblove tehtnice za definicijski kilogram

Štojs, Kaja (author), Lipoglavšek, Matej (mentor), Vencelj, Matjaž (co-mentor)

Sestavili smo enostavno Kibblovo tehtnico za merjenje mase po novi definiciji kilograma. Elektromagnetni del tehtnice je bil skonstruiran okoli kupljenega zvočnika, dodali smo pozicijske senzorje, nekaj podporne elektronike in mikrokrmilnik z ustrezno programsko opremo. Ocenjena negotovost merilnega sistema je okoli 2 %; za prav toliko tehtnica v meritvi tudi preceni izmerjene mase.

• Language: Slovenian
• Keywords: Kibblova tehtnica, meritev mase, zvočnik
• Work type: Final paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FMF - Faculty of Mathematics and Physics
• Year: 2019
• PID: 20.500.12556/RUL-111285
• COBISS.SI-ID: 3373156
• Publication date in RUL: 27.09.2019

Secondary language

• Language: English
• Title: Construction of a simple Kibble balance as used in kilogram definition

Abstract

We have constructed a simple Kibble balance for mass measurements according to the new definition of the unit kilogram. The electromagnetic part of the balance is constructed around of a purchased speaker unit, with added position sensors, some analog electronics and a microcontroller with software that I wrote. The estimated instrument accuracy is around 2 %; coincidentally, this is also how much the mass measurements differ from known masses.

• Keywords: Kibble balance, mass measurement, speaker