diplomsko delo
Jernej Žunter (Author), Bojan Ačko (Mentor)

Abstract

Laserske merilnike uporabljamo za meritve razdalj do 100 m, točnost meritve pa je v območju nekaj milimetrov. Ker merilnike v zadnjem času vse več uporabljajo tudi za meritve v različnih panogah (industrija, promet, geodezija, …), kjer je potrebno zagotoviti sledljivost meritve, jih je potrebno ustrezno umerjati. V Sloveniji trenutno še ni akreditiranega laboratorija za umerjanje teh merilnikov, zato so se v Laboratoriju za tehnološke meritve odločili, da izdelajo ustrezno merilno metodo in postopek, ter ustvarijo pogoje za akreditiranje te dejavnosti. V sklopu izdelave postopka za umerjanje je potrebno ovrednotiti vse vplivne dejavnike na negotovost meritve. Meroslovni področji, ki jih bom v nalogi obdelal, sta predvsem umerjanje in sledljivost ter merilna negotovost. V nalogi sem opisal podroben postopek za umerjanje laserskih merilnikov dolžin ter ovrednotil vse pogoje umerjanja in izrazil njihov vpliv na meritev z merilno negotovostjo. Vplivne veličine na negotovost pri tem umerjanju so predvsem kakovost merilne podlage, temperatura merjenja, negotovost umerjanja etalona ter točnost razbiranja ničelne in merilne točke. Vse omenjene parametre sem ovrednotil na osnovi eksperimentov, ki sem jih izvedel v Laboratoriju za tehnološke meritve.

Keywords

umerjanje;laserski merilnik;merilna negotovost;premost;

Data

Language: Slovenian
Year of publishing:
Source: Maribor
Typology: 2.11 - Undergraduate Thesis
Organization: UM FS - Faculty of Mechanical Engineering
Publisher: [J. Žunter]
UDC: 531.7:621.8(043.2)
COBISS: 14162454 Link will open in a new window
Views: 2495
Downloads: 201
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Other data

Secondary language: English
Secondary title: Calibration of laser distance meters
Secondary abstract: Laser distance meters are used for measuring lengths up to 100 m, measurement accuracy is within a few millimetres. Recently distance meters are increasingly used for measurements in different fields (industry, traffic, geodesy,…) where traceability of measurement needs to be assured, that is why they need to be properly calibrated. At present, in Slovenia there is not an accredited laboratory for calibration of these distance meters yet, therefore people in Laboratory for production measurement decided to develop proper measurement method and procedure, and to create conditions for accreditation of this activity. Whilst developing procedure for calibration, it is necessary to evaluate all factors that influence uncertainty of measurement. Metrology fields which I will present in my paper are mostly calibration and traceability, and measurement uncertainty. In my paper I described detailed procedure for calibration of laser distance meters, evaluated all calibration conditions, and recorded their influence on measurement with uncertainty of measurement. Magnitudes influencing this calibration uncertainty are mostly quality of measurement surface, measurement temperature, calibration uncertainty of etalon, and reading accuracy of zero point and measurement point. All mentioned parameters I evaluated on basis of experiments which I conducted in Laboratory for production measurement.
Secondary keywords: calibration;laser distance meter;measurement uncertainty;straightness;
URN: URN:SI:UM:
Type (COBISS): Undergraduate thesis
Thesis comment: Univ. v Mariboru, Fak. za strojništvo
Pages: IX, 58 f.
Keywords (UDC): mathematics;natural sciences;naravoslovne vede;matematika;physics;fizika;general mechanics;mechanics of solid and rigid bodies;splošna mehanika;mehanika trdnih in togih teles;measurement of geometric and mechanical quantities: instruments;methods and units;applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;engineering;technology in general;inženirstvo;tehnologija na splošno;mechanical engineering in general;nuclear technology;electrical engineering;machinery;strojništvo;machine elements;motive power engineering;materials handling;fixings;lubrication;strojni elementi;dvigala;mazanje;
ID: 1004126