Preliminary study for the implementation of electrical capacitance volume tomography (ECVT) to display fruit content

Abstract

There are some problems in the Indonesian fruit export that need a solution which is a non-destructive tool on fruit to distinguish the conditions of raw, ripe and rotten fruits. In this preliminary research, the first step is to measure the electrical characteristic which is the capacitance of fruit. The result shows, in general, the value of the capacitance decreases when frequency is enlarged. It also can be concluded that the differences in capacitance seen more clearly at high frequencies. On the use of multi channel ECVT scanner, the resulting image shows only the outside of the fruit, so it is difficult to distinguish the condition of each fruits. Further studies are to make a sensor that can wrap the fruit inside so that the inner of the fruit can be more clearly seen. The algorithm used for the image reconstruction in this research is Linear Back Projection (LBP).