Browsing by Author "Fiawoo, S.Y."
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Item Automatic Satellite Dish Positioning for Line of Sight Communication using Bluetooth Technology(Science and Development (A Journal of the College of Basic and Applied Sciences (CBAS), University of Ghana), 2017-12) Sowah, R.A.; Mills, G.A.; Nortey, J.Y.; Armoo, S.K.; Fiawoo, S.Y.Satellite dishes are used to receive beams of signals from satellites and other broadcasting sources which are then focused onto an antenna. The dish needs to be adjusted to get the desired azimuth and elevation for maximum signal reception. To overcome the difficulty of adjusting it manually, it would be beneficial to have a system that aligns the satellite receiver by mechanical means while allowing the user to interact with the system remotely to achieve a line of sight communication with the satellite source of interest. This paper proposes the design and development of a system which receives user specifications from an Android application via Bluetooth by either specifying the direction of orientation of the dish or selecting a satellite of interest. A control system interacting with the developed user interface achieves this. It employs a microcontroller, a GPS device, a compass and two servo motors to manage the orientation of the dish on its horizontal and vertical axes. The Smartphone utilizes its Bluetooth socket to communicate with the Bluetooth module interfaced to the microcontroller. A database containing information on available satellites is included in the Android application which is transferred to the microcontroller for computation of azimuth and elevation angles when the GPS coordinates and compass headings are obtained from their respective devices. Tests carried out showed positive results for control of the orientation of the satellite dish in various directions over a 50m radius. The automatic adjustment functionality provided precise direction for line of sight communication when users chose their satellite of focus.Item Design and development of an Android application to process and display summarised corporate data(Proceedings of the 2012 IEEE 4th International Conference on Adaptive Science and Technology, ICAST 2012, 2012-12) Fiawoo, S.Y.; Sowah, R.A.In the corporate world today, managers are always faced with a lot of decisions to make based on data generated at their various offices. The decision-making process is very vital as decisions taken by management could make a company either overtake or stay within reach of its competitors. This paper presents the design and development of an Android application that would retrieve summarised data from a central database process and display that information on an android device so as to aid managers in their decision-making process. The components of designed and developed system include (1) a web application through which workers would input data at their various workplaces (2) a database hosted on a central server that would store information entered by workers (3) an application programming interface (API) that would take requests from the Android application, query the database and serve the results back to the Android application and (4) an android application that processes and displays results to users. The android application is developed using Eclipse in conjunction with android SDK tools. The application retrieves data from a database per user request and displays the retrieved information on an android device. Users of this application would be able to analyse data quicker hence make quick decisions as they would not be drowned in a flood of detailed information. There is also an added benefit of having access to company data on the go. © 2012 IEEE.