Procesamiento Digital de Imágenes Aplicado al Control de Calidad para la Estación de Almacenamiento Festo de la EIECRI.

Abstract

The digital processing system design and implementation applied to the quality control for Festo storage station, as part of the modular production system at the School of Electronics Engineering in Industrial Network and Control belonging to Escuela Superior Politécnica de Chimborazo, were carried out. The quality control system was designed to interact with two stations adjacent to the production system. The elaborated product (manometer) arriving from the prior station is analyzed by the quality control system through LabVIEW software which decides whether activating or not the electropneumatic device to exclude the faulty manometers. The experimental method was used to determine the quality system efficiency by applying three tests which analyze as many acceptable and faulty manometers as possible, and the same amount of acceptable and faulty ones. The inductive method was used to determine the component dimension and selection from FluidSIM software design. Besides, techniques like grafcet were used to implement the programmable logic controller programming (PLC) and the object-oriented programming for the digital image processing. The station comprises one aluminum-shaped conveyor belt 35 cm long driven by direct current motor designed to hold weight up to 500 g which will move different types of aluminum and plastic manometers, a pneumatic cylinder with run of 10 mm for the manometer position, a webcam to capture images, a pneumatic cylinder with run of 50 mm to exclude manometer, a control board controlled by a PLC which receives arriving signals from switches, sensors and memories issued by the computer, a human-machine interface elaborated in the LabVIEW software in which the digital image processing is done. The quality control system through artificial view is 99.29% efficient when evaluating manometers. It is concluded that it can be used at any point in the assemble manometers system. It is recommended that the operator take into account external factors that might damage the image quality when capturing it since it is important to facilitate the image processing.