Konstrukcija enostavne Kibblove tehtnice za definicijski kilogram

Štojs, Kaja (author), Lipoglavšek, Matej (mentor), Vencelj, Matjaž (comentor)

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