Projeto de um aparato automatizado para coleta de amostras de solo com múltiplas unidades amostradoras

Abstract

Despite all the technology applied in the agricultural crop production system, the soil sampling operation is still critical step in the process and must be well performed in order to represent soil attributes spatial variability. Thus, the objective of this work was the develop a soil sampling equipment with multiple sampling probes units that allows greater performance in situation where samples is needed to be taken in the crop row and in between rows. The search for information about soil samplers available in the market and literature was accomplished; later the conceptual project was elaborated prospecting the necessary prerequisites for the project so that the mechanism would be versatile for the practice of collecting soil samples in the crop row and between crop row. The mechanical design was accomplished with the development of the necessary mechanisms as well as the resistance verification of the dimensioned structures through strength analysis. The electrohydraulic system was design and the electronics for the instrumentation and automatization was prospected. The proposed apparatus was composed by a set of three sampling probes, such as the central probe can be positioned on top a crop row allowing the simultaneous soil sampling of crop row and between row. The estimated cost for prototyping the proposed apparatus was approximately R$ 33.250,9.