Construction of an Automated Door as a Smart Device

Abstract

Home automation, i.e., automation of home devices is the process of introducing additional functions to existing devices. This usually means partially transforming or completely replacing a standard device with smart devices, after which the control of manual operations can be performed remotely via the Internet. In addition to a number of advantages that smart devices provide from automation of tasks to monitoring specific operations, this paper also analyzes the potential disadvantages of smart devices. In the paper, a smart device is being made, where the goal is to control the door via the web interface of any device with an Internet connection. The key components of the door are servo motor and levers which link shaft of servo motor to the door. The major part of the paper is devoted to the construction of the servo motor which is the drive element of the door, whose construction process is divided into two parts: the software part and mechanical part. The software part consists of a PID controller and a web server, and the mechanical part consists of the electric motor and electronic components. The mechanical relationship between the motor and the door was analyzed and the solution, which supports the local mode of operation of the door and control via the web interface at the same time, was chosen. ESP32 microcontroller and an Arduino platform for implementing code were chosen for data processing and motor movement control. HTML, CSS, JavaScript and “web socket” technologies were used to build the user interface and two-way communication, while the C++ language allows interaction with the microcontroller. Realistic 3D model of the automated door drive element was created using SOLIDWORKS software. Among other things, the key elements of the research in the paper are the increase of privacy and speed of data exchange, which is enabled by the direct connection of devices and users.