Diseño de módulos para la adquisición de datos y caracterización de sensores de proximidad con PLC y HMI

Abstract

This document for graduation in the electromechanical engineering degree, is based on the design and construction of five modules for data acquisition, containing proximity sensors of inductive, capacitive and optical type. Although these modules can be connected to various control devices, they are aimed at connecting with the PLC and HMI briefcases that the Antonio Nariño University has in the southern headquarters, in order to be able to carry out practices to check the constructive characteristics of each of the sensors (or its characterization). Each module contains three proximity sensors (inductive, capacitive and optical) which are located in an individual support, for short-range sensors there are two supports, one fixed and one mobile, the latter is connected to a potentiometer that allows measuring the sensing distance, for the optical sensor it is fixed and is anchored to the base of the module. Additionally, in the modules there is a stepper motor in which the support for the specimens was fixed, which will be detected by the sensors in the different tests carried out. For the optical sensor that was installed in each module, there was a problem with the long detection distance of this type of sensor since the final size of the module must be manageable, according to the dimensions of the briefcases and their didactic use, for therefore, in this case, the displacement is carried out by the Test pieces along a support duly marked by a numerical scale. Once the size contemplated were considered, a pre-design of the module was carried out, to determine the location of the elements, as it was built, the pertinent changes were made, until reaching the final model.