Performance Assessment of ESP8266 Wireless Mesh Networks

This paper presents a wireless mesh network testbed based on ESP8266 devices using painlessMesh library. It evaluates its feasibility and potential effectiveness as a solution to monitor perishable goods, such as fresh fruit and vegetables, which are often stored and transported inside refrigerated containers. Performance testing experiments with different numbers of nodes and traffic loads and different message payload sizes are conducted under unicast transmission. The impact on network performance is evaluated in terms of delivery ratio and delivery delay, which, consequently, affect the energy consumption and, hence, network lifetime. The results of this investigation are an important contribution to help researchers to propose mechanisms, schemes, and protocols to improve performance in such challenging networks.info:eu-repo/semantics/publishedVersio

IOT Technologies Research and Smart Agriculture Prototype

The present Final Project offers sensors-based solutions according to the cheapening of mini-computers and in line with the recent spreading of IOT (Internet Of Things) technologies. The main application field covered is Smart Agriculture, where sophisticated systems that sense environmental conditions and trigger output devices, usually with object on industrial control purposes, are being studied and even implanted nowadays. For this reason, consequently, a prototype has been designed. Due to a modern approach to computing and technology that demands different and more intuitive user-interactions, IOT wireless options were also considered, as well as voice compatibility. A control alternative via MQTT (Message Queuing Telemetry Transport) protocol was in addition proposed, on using the developed Android app. Finally, this whole project pretends to offer the results of a generic research of the issue, whose conclusions may be only partially exposed in the prototype. Therefore, it is open to the exploitation of further functionalities and may also be adapted to a different economical sector.El presente Trabajo Final sugiere soluciones basadas en sensores, de acuerdo con el abaratamiento de las mini-computadoras y en línea con la reciente expansión de las tecnologías IOT (Internet De Las Cosas). Su principal campo de aplicación es la Agricultura Inteligente, en el que sistemas sofisticados que perciben las condiciones ambientales y activan equipos de salida, de modo habitual bajo el propósito de ofrecer un control industrial, están ya siendo estudiados e incluso implementados, razón por la que, consecuentemente, se ha diseñado un prototipo. Debido al enfoque moderno hacia la informática y la tecnología, el cual demanda más y diferentes interacciones con el usuario, se han considerado también opciones IOT inalámbricas y de control por voz. Se propone igualmente una alternativa de control mediante el uso del protocolo MQTT (Message Queuing Telemetry Transport) y la aplicación Android desarrollada. Finalmente, la totalidad de este proyecto pretende ofrecer los resultados de una investigación global sobre la materia, cuyas conclusiones pueden estar tan sólo parcialmente reflejadas en el prototipo. Por consiguiente, se encuentra abierto a la integración de futuras funcionalidades así como de a ser adaptado a cualquier otro sector económico.Ingeniería de Sistemas Audiovisuale

IMPLEMENTATION OF HOME AUTOMATION USING WIRELESS COMMUNICATION

Home automation offers convenience in enhancing the quality of life. Its specialty in having centralized control system with capability to solve complex problems in controlling and monitoring home environment and appliances draws the attention of the researchers and home industries to create home automation products with consideration of many aspects such as low cost home automation system, easy access system and etc. The implementation type of home automation system can be either wired or wireless. The wired types are power line and wired home automation while wireless home automation comes with different technologies. The technologies used in wireless home automation such as Wi-Fi, Infrared (IR), Bluetooth, Zigbee and Global System for Mobile communication (GSM). Each of these technologies offers advantages in term of flexibility and reliability but limited to their communication range

Scalable IoT Architecture for Monitoring IEQ Conditions in Public and Private Buildings

This paper presents a scalable IoT architecture based on the edge–fog–cloud paradigm for monitoring the Indoor Environmental Quality (IEQ) parameters in public buildings. Nowadays, IEQ monitoring systems are becoming important for several reasons: (1) to ensure that temperature and humidity conditions are adequate, improving the comfort and productivity of the occupants; (2) to introduce actions to reduce energy consumption, contributing to achieving the Sustainable Development Goals (SDG); and (3) to guarantee the quality of the air—a key concern due to the COVID-19 worldwide pandemic. Two kinds of nodes compose the proposed architecture; these are the so-called: (1) smart IEQ sensor nodes, responsible for acquiring indoor environmental measures locally, and (2) the IEQ concentrators, responsible for collecting the data from smart sensor nodes distributed along the facilities. The IEQ concentrators are also responsible for configuring the acquisition system locally, logging the acquired local data, analyzing the information, and connecting to cloud applications. The presented architecture has been designed using low-cost open-source hardware and software—specifically, single board computers and microcontrollers such as Raspberry Pis and Arduino boards. WiFi and TCP/IP communication technologies were selected, since they are typically available in corporative buildings, benefiting from already available communication infrastructures. The application layer was implemented with MQTT. A prototype was built and deployed at the Faculty of Engineering of Vitoria-Gasteiz, University of the Basque Country (UPV/EHU), using the existing network infrastructure. This prototype allowed for collecting data within different academic scenarios. Finally, a smart sensor node was designed including low-cost sensors to measure temperature, humidity, eCO2, and VOC.The authors wish to express their gratitude, for supporting this work, to the Fundación Vital through project VITAL21/05 and the University of the Basque Country (UPV/EHU), through the Campus Bizia Lab (CBL) program. Partial support has been also received from the Basque Government, through project EKOHEGAZ (ELKARTEK KK-2021/00092), the Diputación Foral de Álava (DFA) through the project CONAVANTER, and the UPV/EHU through the GIU20/063 grant

sistem kendali multiple mikrokontroler menggunakan perintah suara berbasis internet of things

Dalam kehidupan sehari-hari tentunya kita tidak lepas menggunakan perangkat elektronik seperti menyalakan lampu untuk penerangan rumah, menyalakan kipas angin, TV dan lainnya. Bagi orang yang sedang sakit, atau berada di kursi roda, ataupun orang disabitas dan juga orang yang lanjut usia akan kesulitan untuk mencapai saklar lampu ketika ingin menyalakan atau menghidupkan perangkat elektronik. Pada penelitian ini dikembangan voice recognition untuk kendali perangkat elektronik melalui Google Assistant.  Dalam sistem ini, ESP8266 digunakan sebagai mikrokontroller yang mengontrol relay dan membaca nilai sensor DHT11 yang disebut sebagai node. Terdapat 3 node (Node 1, Node 2, Node 3) yang digunakan, dimana Node 1 bertugas sebagai Cluster Head (CH) yang terhubung dengan internet. CH melakukan stream data sekaligus mendistribusikan data dari Node 2 dan Node 3 ke database maupun sebaliknya. Pengujian dibagi menjadi dua tahap yaitu pengujian pada Google Assistant dan pengujian komunikasi kontrol relay. Hasil pengujian menunjukkan sistem dapat bekerja dengan baik dengan tingkat keberhasilan pengujian Google Assistant sebesar 80% dan pengujian kontrol relay sebesar 100%