Višinomer na težno nihalo

Resnik, Trina (author), Vencelj, Matjaž (mentor)

Sestavili smo preprosto fizično nihalo, katerega lahko pospravimo v pohodniški nahrbtnik in z njim preko nihajnega časa določimo na kateri višini smo. Pri sestavljanju je bilo potrebno kar precej ročnega dela, program za merjenje nihajnega časa, ki sem ga sestavila v Pythonu, pa je prejemal podatke iz mikrokrmilnika, s katerim smo preko optičnega senzorja merili periodo. Z mikrokrmilnikom smo zapisovali tudi vremenske spremenljivke. Ker natančne dolžine oziroma razdalje od osi do težišča nihala nismo poznali, smo ga umerili na znani višini v Ljubljani in preko spremembe nihajnega časa določali druge višine.

• Language: Slovenian
• Keywords: težno nihalo, nihajni čas, nadmorska višina
• Work type: Final paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FMF - Faculty of Mathematics and Physics
• Year: 2019
• PID: 20.500.12556/RUL-110477
• COBISS.SI-ID: 3371364
• Publication date in RUL: 15.09.2019

Secondary language

• Language: English
• Title: Pendulum altimeter

Abstract

Our goal was to build a simple gravity pendulum which can fit into a hiking backpack and can measure the altitude at any point. The building process included some manual work with different machines. The program for measuring the pendulum's period, which was built in Python, was recieving data from a microcontroller. The microcontroller was reading an optical sensor for measuring the swing time and two other sensors for measuring atmospheric variables. Because we did not know the exact lenght from the axis of oscillation to the center of mass, we calibrated the pendulum to a known altitude in Ljubjana and determined the altitudes around Slovenia by the change of the period.

• Keywords: simple gravity pendulum, period, altitude