Next Article in Journal
An Intelligent Diagnosis Method for Rotating Machinery Using Least Squares Mapping and a Fuzzy Neural Network
Previous Article in Journal
Calcium Oxide Matrices and Carbon Dioxide Sensors
Sensors 2012, 12(5), 5906-5918; doi:10.3390/s120505906
Article

An Alternative Approach to Control Measurements of Crane Rails

* ,
,
 and
Faculty of Civil and Geodetic Engineering, University of Ljubljana, Jamova 2, 1000 Ljubljana, Slovenia
* Author to whom correspondence should be addressed.
Received: 29 March 2012 / Accepted: 23 April 2012 / Published: 8 May 2012
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [943 KB, uploaded 21 June 2014]   |  

Abstract

Horizontal and vertical positions of points for the control assessment of crane rails are classically determined separately. The procedure is time consuming and causes non-homogenous accuracy of the horizontal and vertical position of control points. The proposed alternative approach is based on polar measurements using a high accuracy total station instrument and a special platform with two precise surveying prisms fixed on it. Measurements are carried out from a single station thus ensuring a common coordinate system and homogenous accuracy. The position of the characteristic point of a rail is derived from the measured positions of both prisms with known geometry of the platform. The influence of platform non-horizontality is defined, along with its elimination procedure. Accuracy assessment is ensured with redundant measurements. Result of the proposed procedure is a numerical and graphical presentation of characteristic points. The control parameters required in international Eurocode standards are easily determined from them.
Keywords: control measurements; crane rails; electronic tachymeter; “L” platform control measurements; crane rails; electronic tachymeter; “L” platform
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
SciFeed

Share & Cite This Article

Further Mendeley | CiteULike
Export to BibTeX |
EndNote |
RIS
MDPI and ACS Style

Marjetič, A.; Kregar, K.; Ambrožič, T.; Kogoj, D. An Alternative Approach to Control Measurements of Crane Rails. Sensors 2012, 12, 5906-5918.

View more citation formats

Related Articles

Article Metrics

For more information on the journal, click here

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert