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1
Iniekcja cementowa pod dnem żelbetowego zbiornika cylindrycznego przechylonego wskutek działania wyporu wody
Buczkowski Wiesław, Majchrzak Włodzimierz
Inżynieria i Budownictwo
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2019
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R. 75, nr 9
414--416
PL
Przedstawiono sposób wykonania iniekcji cementowej pod dnem zbiornika cylindrycznego, który na skutek sił wyporu wody uległ przechyleniu i wytworzyła się pustka pod dnem zbiornika.
EN
Method of performing a cement injection under the bottom of a cylindrical tank tilted by water pressure, which led to the formation of a void under the bottom of the tank.
2
Content available Advanced multi-engine platform (AMP™) – a way to robust RTK
Averin Sergey, Plenkin Andrey, Ignatev Pavel, Vorobiev Michael, Veitsel Andrey
Annual of Navigation
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2019
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No. 26
12--20
EN
The paper describes the Advanced Multi-Engine Platform (AMP™) – Topcon’s patent pending technique, which is capable to improve RTK performance, based on the idea of running several RTK engines in parallel. The performance of AMP™ is dependent on Topcon receiver board, where it has been implemented, and the best results are achieved with B210 board. The main specifics of B210 is that it has two RF front-ends and a single digital section. Such an architecture allows for calculating heading and tilt within a single receiver board, and providing better RTK performance due to synergy of attitude determination and RTK solutions from two antennas, calculated within a single digital section. The paper describes specifics of B210 board along with mathematical aspects of AMP™ and its logic. The test results demonstrate noticeable improvements in RTK performance for B210 receiver board with AMP™, compared with the classical single-engine RTK approach.
3
Content available remote Tilt measurements in mechatronic devices and mobile microrobots
Łuczak S.
Engineering Transactions
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2018
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Vol. 66, iss. 4
471--492
EN
A review of the author’s own research on tilt measurements in mechatronic devices by means of micromachined accelerometers is presented. This comprehensive study addresses such issues as adjusting metrological properties of a tilt sensor for the application in a specific kind of a mechatronic device, systematizing problems pertaining to tilt measurements, applying various methods of decreasing uncertainty of tilt measurements, performing related experimental studies using custom test rigs, and building novel prototypes of tilt sensors. Due to the implementation of the proposed measurement techniques, considerations and novel ideas, it is possible to determine tilt either in a much simpler way, which translates to lower cost, or much more precisely, depending on particular requirements to be satisfied.
4
Content available remote Real Time Prototype to Measure Structural Acceleration and Tilt of High-Rise Building
Haque M. E, Zain M. F. M, Hannan M. A., Jamil M., Asikuzzaman M
Przegląd Elektrotechniczny
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2015
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R. 91, nr 2
177-182
EN
Smart sensor is the new invention applying to detect the damage of the high-rise civil building structural health. Sensor technology offers new opportunities to advance monitoring for civil large building infrastructure health and maintenance by providing relevant information regarding the condition of high-rise building structural strength at a light price and greater bulk than traditional monitoring tactics. The aim of this article is to validate the MEMS accelerometer sensor to measure vibration and tilt of the high-rise civil building infrastructures. The experimental result shows that the propose prototype has been successfully measured high-rise building vibration and tilt sensing information.
PL
W artykule opisano możliwości zastosowania czujników przyśpieszenia typu MEMS do pomiaru wibracji i odchylenia konstrukcji budynków. Przedstawione wyniki badań eksperymentalnych potwierdzają przydatność tych czujników szczególnie w sytuacjach dużych zagrożeń.
5
Content available Accelerometer - Based Measurements of Axial Tilt
Łuczak S.
Journal of Automation Mobile Robotics and Intelligent Systems
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2012
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Vol. 6, No. 1
39-41
EN
The paper deals with a specific type of tilt measurements, where an axial tilt is to be determined. The measurements are realized by means of accelerometers - MEMS devices most preferably. Various mathematical relations between the axial tilt and the Cartesian components of the gravitational acceleration are presented. Each relation is described in detail, especially in the terms of the resultant uncertainty of the measurement, as well as the requirements regarding the employed accelerometers. Results of experimental studies realized by means of commercial MEMS accelerometers are presented and discussed, especially with regard to the measurement accuracy that has been evaluated for each mathematical relation. Scope of application of each relation is proposed.
6
Content available Data fusion in measurements of angular position
Łuczak S.
Journal of Automation Mobile Robotics and Intelligent Systems
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2010
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Vol. 4, No. 2
16-20
EN
The paper describes a possibility of increasing accuracy of measurements of angular position with application of data fusion. Two cases of determining the angular position are considered: accelerometer-based measurements of tilt and measurements of angular position with application of incremental rotation-to-pulse sensor (coupled with an original measuring system described in the paper). Application of the proposed data fusion ensures in both cases decrease of the uncertainty of the related measurement of ca. 40%.
7
Content available Low-range tilt sensing with mems accelerometers
Łuczak S., Kołodziej D.
Journal of Automation Mobile Robotics and Intelligent Systems
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2009
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Vol. 3, No. 4
93-95
EN
Ways of adjusting MEMS accelerometers for tilt measurements over a small angular range of few degrees arc or less are considered with regard to achieving a possibly high accuracy. The paper describes some additional mechanical structures applied to overcome the problem of incompatibility between the large measuring range of MEMS accelerometers and the expected small angular measuring range.
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