الفهرس | Only 14 pages are availabe for public view |
Abstract In this thesis, Image processing is used for remote measurement of the water flow rate out from open pipes and for measurement the water wave parameters. The first application of the image processing technique proposed in this thesis aims to measure the flow of water coming out of pipes. This measuring system is important in a wide range of applications. For example the water pump outputs from an open-ended pipe to the atmosphere. Such applications are found in agricultural irrigation, drilling for fresh water and low-temperature geothermal water. The need for a simple and inexpensive metering method may arise where the installation of accurate metering is not practical and/or too expensive. Image processing approach is used in this thesis to detect the trajectory of the water flow and deduce its equation for metering the water flow in pipes. In addition, the relation between the water pump power and the output flow is introduced. The second application is to measure the wave parameters (e.g., wave period, wave length, and incident height). The water level variation resulting from the wave structure interaction is recorded by using a digital still camera. The camera zoom is adjusted exactly perpendicular to the linear scale on the glass flume side facing a fixed measuring point. The camera is positioned on a vertical stand to avoid variations in the scale of the video frames. The recording time for each run is about 2.5 the time required for a generated wave to travel from the wave generator to the measuring point. The mathematical equation of the wave is obtained. The wave parameters are calculated from the wave equation. The results of the proposed image processing method are compared against the slow motion technique. This thesis illustrates how image processing can be used in measuring a dynamic system with low cost and good accuracy. Keywords Image processing, Water flow rate, Regular water wave, Remote measuring. |