Modern Methods for Processing Magnetically Induced Signals for Detecting Metal Objects in the Agricultural Industry

Abstract

Today, the task of metal detection in the agricultural industry is most in demand in forage harvesters. This is due to the fact that during the process of harvesting fodder crops, in addition to the target mass, foreign metal objects of various shapes and sizes get into the grinding mechanism. These include both objects lying on the surface of the earth, and the products of the destruction of the header of the machine itself. As a result of metal getting into the combine feeder, which is not equipped with a detection device, the crushing drum is destroyed, leading to catastrophic consequences. In addition to stopping the harvesting process due to the failure of the combine, this breakdown creates a serious risk to the health and life of the machine operator, since the destruction of the chopping drum is accompanied by the departure of knives moving at high speed and having great kinetic energy. Thus, the task of prompt detection of foreign metal objects on the way to the combine feeder is relevant all over the world. This article discusses modern methods for processing a magnetically induced signal from sensors and provides a comparative analysis of the effectiveness of a particular method.