Contactless measurement of rectilinearity of an elongated object based on the example a crane rail

• Autorzy: Ćmielewski K. , Kuchmister J. , Gołuch P. , Bryś H.

Identyfikatory

DOI

10.2478/rgg-2015-0005

• Języki publikacji: EN

Abstrakty

EN

The common aim of engineering surveys is to determine deviations from rectilinearity for elongated objects. We have developed a number of methods for measuring points that represent an elongated object. These are the constant straight (optical, laser, mechanical-string) method, the trigonometric method, geometric levelling method, photogrammetric methods and terrestrial laser scanning. When taking these measurements, it is crucial to have a direct access to the survey points of the measured object. Factors impeding the measurements include: adverse lighting conditions, vibration, dust, refractory effects, lack of direct access to the survey points, etc. The authors have developed a measurement methodology and designed a measuring set for taking measurements that enable to determine the location of survey points on an elongated object. The measurement is based on the constant straight method and the measuring set consists of the horizontal levelling staff and two laser pointers. The measuring set relies on the angular intersection (fixed angle) method. Intersection occurs when two laser beams meet. To determine the location of the survey point indicated by the mentioned laser beams, we used levelling staff readings taken with the surveying instrument that establishes the reference constant straight. Experimental studies carried out in the laboratory and in the field helped to determine the accuracy of measurements taken with the designed measuring set (the accuracy was below ± 1 mm) and revealed that this accuracy is comparable to accuracies achieved with famous classical measurement methods.

Słowa kluczowe

EN

elongated object; laser instrument; crane rail

PL

przedmiot wydłużony; urządzenie laserowe; żuraw

• Wydawca: Wydział Geodezji i Kartografii Politechniki Warszawskiej
• Czasopismo: Reports on Geodesy and Geoinformatics
• Rocznik: 2015
• Tom: Vol. 98
• Strony: 52--59
• Opis fizyczny: Bibliogr. 7 poz., rys., tab.

Twórcy

autor

Ćmielewski K.

• Institute of Geodesy and Geoinformatics, Wroclaw University of Environmental and Life Sciences, Grunwaldzka 53, 50-357 Wroclaw, Poland

autor

Kuchmister J.

• Institute of Geodesy and Geoinformatics, Wroclaw University of Environmental and Life Sciences, Grunwaldzka 53, 50-357 Wroclaw, Poland

autor

Gołuch P.

• Institute of Geodesy and Geoinformatics, Wroclaw University of Environmental and Life Sciences, Grunwaldzka 53, 50-357 Wroclaw, Poland

autor

Bryś H.

• Faculty of Environmental Engineering , Cracow University of Technology, Warszawska 24, Poland

Bibliografia

• [1] Bryś H., Ćmielewski K. & Kowalski K. (2008). Zur Methodik der Überwachungsmessungen der Lagegeometrie von Brückenkran-Laufrädern. Allgemeine Vermessungs-Nachrichten, 5/2008, 188-194.
• [2] Ćmielewski, K. (2007). Fibre optics and laser technology in high precision measurements of shapes and deformations of engineering objects (in Polish). Wrocław: Zeszyty Naukowe UP we Wrocławiu Nr 551, seria Rozprawy CCXLVI, 242 pp.
• [3] Gocał J. (2010). Geodezja inżynieryjno przemysłowa. Tom 3. Kraków: Skrypt AGH.
• [4] Janusz W. (1975). Obsługa geodezyjna budowli i konstrukcji. Warszawa-Wrocław: PPWK.
• [5] Ministerstwo Hutnictwa i Przemysłu Maszynowego. (1982). Wytyczne wykonania pomiarów suwnic i jezdni suwnicowych. Zał. nr 15 do instrukcji geodezyjnej resortu przemysłu ciężkiego. Warszawa: Wyd. Przemysłu Maszynowego „WEMA“.
• [6] Mora A. S. (1998). Aplicaciones industriales de la topografía (in Spain). Madrid-Castilla-La Mancha: Colegio Oficial de Ingenieros Técnicos en Topografía, 367 pp.
• [7] Pachuta St. (1980). Instrumentoznawstwo geodezyjne – Zastosowanie techniki laserowej w geodezji. Część I i II. Warszawa: Skrypt WAT.
• [8] Toshiba. (2002). Visible laser diodes. Product guide.