Diseño de un prototipo de cerradura electrónica conectada a una red wifi y controlada mediante una aplicación móvil, para el control automático de las puertas de los laboratorios del edificio de la FIE.

Abstract

The aim of the research was to design an electronic lock prototype connected to a wifi network and controlled through a mobile application, for the automatic control of the doors in the laboratories of the Faculty of Computer Science and Electronics (FIE) building at Escuela Superior Politécnica de Chimborazo (ESPOCH). Using methods of experimentation and observation, a system of electronic access control was developed. It is made up of designed mechanisms, that allow you to open and / or close a door automatically using the development board NodeMCU as control device and wireless communication. It has a system of protection in the sending and receiving of information through the encryption algorithm AES-128. The mobile application that handles the user was developed in the Android software. Also, the system has the service of Google real-time database (Firebase) that enables the authentication of users in the application. The prototype has contingency systems against electrical outages, a battery from 12V to 7a, for wireless communication failures, there is an access control system with Near Field Communication (NFC). From the results obtained, by means of a software to capture network traffic, it was verified that there is a correct encryption of messages to send and receive information between interfaces, ensuring a secure system wirelessly. The system power backup works approximately three hours at full load, and in a state of rest, 58 hours. The prototype created may reduce the access time of students and teachers for the use of laboratories, and become a modern and functional element of low cost that can be supplemented with other devices. It is recommended to assign a fixed IP address to the device within the network, to send requests from the mobile application.