Análisis, diseño y construcción de un módulo de control de temperatura para el laboratorio de la EIE-CRI de la ESPOCH.

Abstract

We performed the analysis, design and construction of a temperature control module for the control laboratory of the School of Engineering in Electronics in Control and Industrial Networks of ESPOCH. In the research we apply the analytical method that starts from the identification of the problem, its approach, the formulation of the hypothesis and its subsequent application. The materials used for the realization of the temperature module in its mechanical part of a fiber and glass furnace, an electrical resistance of 500 watts of power, a control panel where are the power supplies, and lights Type of alarm Red and green in the part of the cooling system with solenoid valve, pressure regulator, a double-acting cylinder and a pneumatic air shower, has a Pt-100 sensor and a K-type thermocouple to measure Temperature, In addition, a Wheastone bridge is available for signal conditioning. The software used for the interface is LabVIEW® 8.10, as well as a data acquisition card NI my DAQ in charge of communication between the control interface and the electric oven. The results obtained in the temperature module show that they have a 98% stability for what indicates that it is a very reliable system, in addition to the very fast response times to reach and maintain the desired set point, to control the temperature variable . The construction of the temperature module is an important contribution to students' learning in the field of industrial control. It allows observing the use of different temperature sensors and actuators, their wiring and programming in the software. In addition, it is a clear tool of the simulation of processes existing in the real industry thus achieving that the technical level acquired by students in the course of their career is strengthened. It is recommended to integrate the didactic module of temperature control in the materials of instrumentation, sensors and control systems.