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Most of the conventional fruit sorters employ mechanical weigh scale for grading the fruits based on weight. These sorters make use of force balance weigh scale method for fruit dropping which drops the fruit based on the preset counter balance weight. This mechanism is mainly used for grading and sorting of fruits based on weight alone. This paper describes the development / automation made over...
In the past decade, a variety of thermoacoustic engines (TAEs) were devised to convert thermal energy to acoustic power. In this paper, we optimized the design of a standing wave thermoacoustic generator that can provide high intensity acoustic pressure and convert it into electrical power output using a low cost alternator. Three prototypes of standing wave thermoacoustic generator (TAG) were designed...
Size is one of the important parameters in grading of fruits. Also quantifying the fruit's shape gives value addition to the fruits. This paper describes analytical methods to estimate the size and shape of citrus fruits to grade them based on single view fruit images. Sweet-lime and orange fruits are taken for case study of size and shape determination respectively. The size of the sweet-lime fruits...
Thermoacoustic heat engine (TAHE) converts thermal power (heat) into acoustic power. TAHE has been gaining significant interest because of its non-fuel specific, low cost and high reliability (due to reduced moving parts) compared to conventional IC engines. The performance of TAHE depends upon the various parameters such as stack position, stack length and resonator length. Previously, we built a...
The present paper describes analytical methods for estimation of volume of axi-symmetric fruits like apples based on single view fruit images and the shape-based analytical models. The fruits are categorized into spherical, ellipsoid and paraboloid shapes with appropriate analytical models for their volume estimation. The methods analyze the single view fruit images to extract the eccentricity and...
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