No abstract

Abstract-Mostly, farmers spent most of their time to supervise wide area of planting and it exhausted. The objective of this project is to develop an advanced monitoring system. In this paper, an attempt has been made by using Interactive Graphical Supervisory Control and Data Acquisition (SCADA) System (IGSS) software and Programmable Logic Controller (PLC) which integrate with a fertigation system to solve the problem. The SCADA monitoring system is built based on Graphical User Interface (GUI) by using IGSS software. As a result, the project is able to control and supervise the fertigation system prototype process smoothly. The project operates in two conditions which indicate the water level in tank and detect the humidity in the soil, thus the user can supervise their plant without perforce to the site of planting area. It can support two ways communication system, which is the main uniqueness and the special features of the project compared to today's technology. The project can be improved by using the analog type device, where user can see a real time data on screen through supervised mode. The idea of making current project to online is also one of the improvements that can be made.

No abstract

This paper presents a closed-loop voltage controlled single phase matrix converter (VCSPMC) with boost characteristic and low total harmonics distortion (THD) that complies with the IEEE Standards 519-1992 and 1159-1995. The VCSPMC possesses higher output voltage compared to the input voltage which is 12Vrms with both THD at the input and the output of the VCSPMC reduced to below than 5%. This VCSPMC is controlled by a voltage sensor that measures its output voltage and is compared with a reference voltage of 15Vrms. The proposed method is based on simulation done using MATLAB/Simulink and is experimentally verified.