TLS-detectable plane changes for deformation monitoring

Kregar, Klemen (avtor), Marjetič, Aleš (avtor), Savšek, Simona (avtor)

TLS is nowadays often used for deformation monitoring. As it is not able to scan identical points in different time epochs, mathematical models of objects derived from point clouds have to be used. The most common geometric form to describe built objects is a plane, which can be described by four parameters. In this study, we aimed to find out how small changes in the parameters of the plane can be detected by TLS. We aimed to eliminate all possible factors that influence the scanning. Then, we shifted and tilted a finite physical representation of a plane in a controlled way. After each controlled change, the board was scanned several times and the parameters of the plane were calculated. We used two different types of scanning devices and compared their performance. The changes in the plane parameters were compared with the actual change values and statistically tested. The results show that TLS detects shifts in the millimetre range and tilts of 150” (for a 1 m plane). A robotic total station can achieve twice the precision of TLS despite lower density and slower performance. For deformation monitoring, we strongly recommend repeating each scan several times (i) to check for gross errors and (ii) to obtain a realistic precision estimate.

• Jezik: Angleški jezik
• Ključne besede: deformations, detectable plane changes, TLS, robotic total station, wooden board platform, tilting, shifting, X2 statistical testing
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FGG - Fakulteta za gradbeništvo in geodezijo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2022
• Št. strani: 18 str.
• Številčenje: Vol. 22, iss. 12, art. 4493
• PID: 20.500.12556/RUL-137826
• UDK: 528
• ISSN pri članku: 1424-8220
• DOI: 10.3390/s22124493
• COBISS.SI-ID: 111679491
• Datum objave v RUL: 01.07.2022

Gradivo je del revije

• Naslov: Sensors
• Skrajšan naslov: Sensors
• Založnik: MDPI
• ISSN: 1424-8220
• COBISS.SI-ID: 10176278

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 14.06.2022

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: deformacije, zaznavne spremembe ravnin, TLS, robotizirani tahimeter, platforma lesene plošče, nagibanje, zamikanje, statistično testiranje