Modelling of linear test bench for short distance measurements

Šiaudinytė, Lauryna

doi:10.21014/acta_imeko.v4i2.229

Cited by 5 publications

(3 citation statements)

References 6 publications

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“…The mirror is attached to the telescope of a total station, to which an autocollimator is pointed. In this way the setup for flat angle calibration was used to calibrate the vertical angles, with the expanded uncertainty of U 95% = 0.52 00 (k = 2) [12,13].…”

Section: Related Researchmentioning

confidence: 99%

Uncertainty evaluation of trigonometric method for vertical angle calibration of the total station instrument

Šiaudinytė

Grattan

2016

Measurement

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The total station is an instrument, widely used in civil and environmental engineering, for flat and vertical angle as well as distance measurements. Typically, routine calibration of such an instrument is obligatory, and depending on the local regulations, is performed typically annually or biannually. Analysis of previous research shows that undertaking flat angle calibration under laboratory conditions is more common than calibration of vertical angle measuring systems. This paper deals with a trigonometric vertical angle calibration method and research into determining the main sources of uncertainty is described in the paper. The principle of the method is explained, as well as the uncertainty evaluation based on GUM and the advantages as well as the weaknesses of the setup are discussed.

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Section: Related Researchmentioning

confidence: 99%

Uncertainty evaluation of trigonometric method for vertical angle calibration of the total station instrument

Šiaudinytė

Grattan

2016

Measurement

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“…These conditions and the simplification need should also be considered in the calibration phase, in order to correctly estimate the metrological performances of the instruments in the conditions of actual use, and to guarantee the validation and the trustworthiness of the results [24][25][26]. This approach is not usual in the literature on the subject, where calibration is generally performed under laboratory conditions [15][16][17][18][19][20][21][22][23][24]. Standards are also available, concerning the validation of measurements carried out with TS (ISO 17123 -5: 2018) and LS (ISO 17123 -9), which present simplified and complete measurement procedures, to consider different Anyway, the number of contributions to the uncertainty is so high [27], and there are so many possible ways to calibrate the system, that obtaining a quantitative evaluation of the measurement uncertainty, with reference to the specific application of interest, is not a trivial task.…”

Section: Introductionmentioning

confidence: 99%

Metrological comparison between instruments for status monitoring of buildings after earthquake

Natale¹,

D’Emilia²,

Chiominto³

et al. 2023

Proceedings of the 18th IMEKO TC10 Conference on Measurement for Diagnostics, Optimisation and Control

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This paper aims to investigate the possibility of using measuring instruments to obtain objective indications of the state of a building following an earthquake, to facilitate the planning of interventions in safe conditions and to design provisional structures. The use of such tools would also be useful for monitoring both buildings and provisional structures over time. In particular, a Laser Scanner and a Total Station are examined and compared from a metrological point of view, to evaluate the possibility of using them in emergency situations, which present particular criticalities for measurements, if the reliability of the results has to be guaranteed. The façade of a historical building is used as a test case, and is subjected to measurement campaigns, distributed over time, with the aim of evaluating repeatability and reproducibility of results. Furthermore, applying known thicknesses to the monitoring points, the systems measuring thresholds are evaluated. This work would like to represent a first step towards the standardization of procedures for the adoption of Laser Scanner and Total Stations by rescuers in emergency situations.

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“…As such, they consent to reach a good balance between precision and data quality, easy-to-use, cost, easy to realtime processing. There are studies in the literature that refer to indoor calibration of Total Stations [25].…”

Section: Introductionmentioning

confidence: 99%

Validation of a measurement procedure for the assessment of the safety of buildings in urgent technical rescue operations

et al. 2021

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This work would like to provide a preliminary contribution to the draft of standard procedures for the adoption of Total Stations by rescuers in emergency situations, so as to offer a reliable and effective support to their assessment activities. In particular, some considerations will be made regarding the effect of the number and positioning of monitoring points on the tilt determination of a building façade, in order to set up simplified procedures, which are quick and easy to implement in emergency situations, at the same time guaranteeing the reliability of the results. Two types of building will be taken into account as test cases, which have different characteristics in terms of height, distance and angle with respect to the Total Station. Some considerations will be made about the aspects to be explored in future work, for the calibration of the method as a whole and the definition of all the steps of a procedure for the evaluation of the safety of a building.

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Modelling of linear test bench for short distance measurements

Cited by 5 publications

References 6 publications

Uncertainty evaluation of trigonometric method for vertical angle calibration of the total station instrument

Uncertainty evaluation of trigonometric method for vertical angle calibration of the total station instrument

Metrological comparison between instruments for status monitoring of buildings after earthquake

Validation of a measurement procedure for the assessment of the safety of buildings in urgent technical rescue operations

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