Remote monitoring of embedded device

Abstract

This paper introduces the process of the design and implementation of an application for monitoring an embedded device. The project consists of three main applications and usage of IoT platform for visualizing the results from the device. The firmware for the embedded device is written in C programming language, and the applications for Raspberry Pi are bound together. The server-side application is written in NodeJS is RESTful and can be connected with any other application. The first part of the thesis interpretes the theoretical part of the project, the concept of embedded devices and their different usage. The architecture of RESTful API is introduced and different kind of sensors are explained. The firmware for the embedded device was developed first, and it was followed by Python application and server-side application. The embedded device and Raspberry communicate via Bluetooth technology. Communication with the server and with ThingsBoard is implemented with HTTP and MQTT protocols. For data storage, NoSQL database is used. ThingsBoard provides a user-friendly interface for visualizing data from the device. With the device a fully working application was developed where data is successfully recorded, stored and serves the user in readable and useful way.