Desenvolvimento de equipamento para avaliação automática do teste de alizarol em leite cru

Abstract

In the Brazilian dairy industry, more and more technology and automated systems are being used, but technological advances are not uniform at all stages of the production chain. Currently, during the milk collection on rural properties, the alizarol test is carried outto determine the quality of the milk, however, the evaluation of the test results, which determines whether the milk will be collected or condemned, is done subjectively, and there is no record that allows the inspection of the process. In view of the financial importance of the test result, aiming to bring greater reliability, as well as to eliminate the subjectivity involved in the evaluation of the alizarol test, in this work an electronic equipment was developed, composed of a Box of Evaluation responsible for receiving a sample of milk, photographing it and sending the photo through Bluetooth communication to a cell phone application capable of performing the automatic evaluation of the alizarol test, presenting the result in about 30 seconds, and allowing the results record. The analysis of the sample is carried out according to two parameters, the first being the average hueof the sample, with which it is possible to determine the pH of the sample, based on the linear correlation verified with the tests performed. The second parameter is the presence of lumps in the sample, which are detected by an algorithm that evaluates the color variation of the image, the algorithm has a sensitivity that can be regulated according to tests and quality policies specific to the dairy industry or laboratory that uses it.