| Abstract [eng] |
Different volumetric methods are reviewed in the thesis. Invasive, which is based on the presence of liquid sensors operating on different principles. And non-invasive, based on the principles of airborne, acoustic, optical waves. For a further volume measurement, the method was chosen based on the Helmholtz resonator principle. It is chosen due to the fact that no complex and expensive devices are needed and sufficient accuracy is obtained. The experiment included the portable digital data capture device, which includes signal generation output. Matlab software programmed the measurement procedure and data processing using the Matlab. The work proposes the measurement methodology. Experimental measurements with simple reservoirs yielded precise results (the error did not exceed 2%), but with increasing volumes of the object under investigation and in the case of complex geometric reservoirs, the experimental results deviations from the theoretical value were significant. Measurements were made with 0.75 and 3 liters of glass bottles and with 4.3, 19, 55 liters of plastic containers. |
