Use of mems technology in mass wasting research

• Autorzy: Ćmielewski B. , Kontny B. , Ćmielewski K.
• Języki publikacji: PL

Abstrakty

EN

Mass movements are a major threat to human life. Their growth depends on many factors. The main factor causing the surface mass wasting is the gravitational force, but the conditions in which this force can act, arise in different ways: it may be undercutting of slopes by erosion or weathering, deep relaxation of the layers forming the edge or slope overload by rain or snow. Often, all these factors interact. The material speed movement down a slope can be very slow, in the manner that is difficult to observe as well as suddenly and violently at a high speed. Methods permitting the monitoring of areas at risk of movement are geodetic, geptechnical and geophisical technics. The most popular method to investigate the movements of the soil layers is to use the inclinometer probe. However, this application requires a large effort involving the execution of specific wells, set up columns and the most expensive item inclinometer probe. Measurements using this technique are periodic and not fully reflect the processes occurring beneath the surface. To improve result several probes can be connected together, admitted to the same hole and registering readings in a real time. The cost of installation often exceeds the project budget. In this paper authors want to put attention to the possibility of using miniature measuring devices such as accelerometers, which are working in low -g š2g, to detect the force of Earth's gravity, distributed into three axis X, Y, Z. This allows calculating the direction of the deflection from X, Y axis and the deviation from the vertical line.

Słowa kluczowe

PL

ruchy masowe; pomiary geodezyjne

EN

mass movements; measurements

• Wydawca: Wydział Geodezji i Kartografii Politechniki Warszawskiej
• Czasopismo: Reports on Geodesy
• Rocznik: 2011
• Tom: z. 1/90
• Strony: 85--92
• Opis fizyczny: Bibliogr. 8 poz., rys., tab., wykr.

Twórcy

autor

Ćmielewski B.

autor

Kontny B.

autor

Ćmielewski K.

• Institute of Geodesy and Geoinformatics, Wroclaw University of Environmental and Life Sciences,

Bibliografia

• [1] Abdoun T., Danisch L., Ha D., 2005, Advanced sensing for real-time monitoring of geotechnical systems, Site Characterization and Modeling (GSP 138), (Geotechnical Special Publication No. 138), Proceedings of Sessions of the Geo-Frontiers 2005 Congress, January 24-26, 2005, Austin, Texas.
• [2] Clifford M., Gomez L., 2005, AN3107 - Measuring Tilt with Low-g Accelerometers, Freescale Semiconductor.
• [3] Książkiewicz M., 1959, Geologia Dynamiczna, Warszawa 1959, Wydawnictwa Geologiczne.
• [4] Łuczak S., 2008, Pomiary odchylenia od pionu z użyciem akcelerometrów MEMS, Pomiary Automatyka Robotyka 7-8/2008.
• [5] Migoń P., 2009, Geomorfologia, Wydawnictwo Naukowe PWN, 2009, ISBN: 978-83-01-15979-5.
• [6] Pyka A., 2010, Detekcja zderzeń w robotach mobilnych, Dokumentacja wykonana w ramach kursu projekt zespołowy, Wydział Elektroniki, Politechnika Wrocławska 2010.
• [7] Fisher Ch.J., Using an Accelerometer for Inclination Sensing, Application Note AN-1057, Analog Devices.
• [8] Freescale Semiconductor, 2009, 3-Axis Orientation/Motion Detection Sensor, Technical Data.