Desenvolvimento de uma instrumentação eletrônica para determinação de desempenho de tratores agrícolas utilizando carro dinamométrico

Abstract

Agricultural tractor is considered the most important machine in production agricultural process. It is a power source for different operations, with its performance in traction, the reason for countless researches, aiming at adequacy and correct sizing. In this sense, the present work aims to develop an electronic instrumentation and equip a dynamometric car for acquisition agricultural tractors data performance in soils system with irrigated rice management at Rio Grande do Sul. The instrumentation was developed using Arduino platform, and a set of sensors that allow obtaining tensile force data, driving wheels rotation, displacement speed and fuel consumption. To carry out tests, a NEW HOLLAND tractor model TL 75E with 55 kW (75 hp) nominal power engine and a mechanical horse SCANIA brand, model112 HW with 265 kW (360 hp) nominal motor power, were used, adapted to act as a dynamometer. The tractor-car dynamometer set was subjected to a traction experiment on concrete track, applying different loads on tractor, in order to determine performance traction from data obtained by developed instrumentation. From the results obtained, it is concluded that instrumentation and dynamometric car have been shown to be adequate for performance of experiments/tests aiming determination of the performance of tractors in traction.