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Analysis of Coffee Harvesting Process by Vibration

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  2007 ASAE Annual Meeting  071142.(doi:10.13031/2013.23204)
Authors:   Daniel Marçal de Queiroz, Fábio Lúcio Santos, Francisco de Assis de Carvalho Pinto, (or initial) (or initial)
Keywords:   Coffee, harvesting, vibration

The objective of this work was to evaluate the effects frequency, amplitude and direction of vibration, ripeness stage of the fruits, and number of fruits in the stem-fruit system on fruit removal efficiency. Laboratory tests by using an electromagnetic vibrating machine were done. The amplitudes tested were in the range of 7.50 to 15.00 mm and frequencies from 13.33 to 26.67 Hz. The tests were performed for two Brazilian coffee varieties: the Catuaí Vermelho and the Mundo Novo. The obtained results had shown that the frequency of 26.67 Hz presented a higher efficiency of cherry fruit removal for both varieties. The amplitude of 15.00 mm presented a higher efficiency of coffee harvesting for the Mundo Novo variety. Also, for the variety Mundo Novo the number of fruits attached to the branch affects the coffee harvesting efficiency.

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