Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 18 of 18 for “"ESP32"”.
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Employing multi-modal sensors for personalised smart home health monitoring.
… most consistent wireless performance, while the ESP32 was found to produce viable CSI data for sensing applications. This establishes the ESP32 as a low-cost high-value hardware solution for CSI sensing. To complete this work, an in-home study was performed using real-world sensor data. An …
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Modular Smart Heating Control System
… room-heating control system built from low-cost ESP32 microcontroller units communicating via the ESP-NOW wireless protocol. The aim is to offer an inexpensive alternative to conventional smart thermostats to improve residential heating efficiency. The system architecture combines a central …
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IoT WiFi sensor vlhkosti půdy a teploty
… senzorov a ich fungovanie. Je predstavený modul ESP32 a jeho vlastnosti, ktorú sú pre navrhované zariadenie dôležité. Zahrnuté je aj predstavenie vybraných typov komunikačných protokolov využívajúcich WiFi rozhranie, ktoré sú vhodné pre komunikáciu v IoT. V praktickej časti je zhrnutá realizácia …
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EKG ir EEG biopotencialų registravimas ir perdavimas bevieliu ryšiu /
… data transmission via Wi-Fi is handled by the ESP32 microcontroller. The transmitted data is read by a custom created computer program. Biopotential signals are affected by a significant amount of noise, so the program includes signal filtering tools. Additionally, the program features product …
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Accurate On-Body Distance Estimation using BLE RSSI and IMU Sensor Fusion
… We developed a custom wearable system using ESP32 microcontrollers and BNO085 IMUs and conducted a study with 6 human participants performing a series of defined arm movements. A high-precision XSens motion capture suit provided ground-truth data. This data was used to train a Long Short-Term …
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Building a Low-Cost Portable VO2 Max Mask
… oxygen, and NDIR carbon dioxide), an ESP32 microcontroller with Bluetooth Low Energy transmission, and a Python-based logging and analysis pipeline. The system incorporates a BLE protocol that accommodates differing sensor sampling rates, while a mixing-chamber approach addresses the …
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Design and Lab Implementation of an Air Source Transcritical CO2 Heat Pump
… controllers for the TCHP were developed using ESP32 microcontrollers and open-source libraries. Controller gains were empirically tuned based on system response data, enabling precise operation of the heat pump and flexibility for future implementation of advanced control strategies.</p> …
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Secured and Versatile IoT Connectivity: A Novel LoRa-Based Approach with Enhanced Encryption, Key Exchange, Real-Time Data Visualization, and Dynamic Storage Integration
… a locally hosted webpage, local storage in the ESP32 in a CSV file format, and secure cloud storage on the Adafruit IO platform. Using parameters like signal-to-noise ratio (SNR), received signal strength indicator (RSSI), latency, power consumption, and memory consumptions, performance …
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Bio-inspired lightweight polymorphic security system for IoT devices
… system was implemented and validated on a custom ESP32-S3 development board and benchmarked against an ATMEGA328P microcontroller, encompassing extensive cycle, timing, power, and energy consumption analyses. Testing demonstrated the system's adaptive encryption selection, session integrity …
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Desarrollo y validación de un prototipo AMI de bajo costo con modelado de escalabilidad para aplicación residencial en Bogotá, Colombia
… a pequeña escala basado en un microcontrolador ESP32, sensores de corriente SCT-013-5A y de voltaje ZMPT101B, y la plataforma Blynk.io como entorno de visualización de datos en tiempo real; y en la segunda, se elaboró un modelo de aplicación a gran escala, adaptado a las condiciones eléctricas …
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Development of an Integrated Microfluidic and TEER Measurement System for Static and Dynamic Blood–Brain Barrier Models
… device was designed using S TM32F303K8 and ESP32 microcontrollers to perform 4-point probe measurements and log data via the internet. The microfluidic chips were fabricated using high-resolution resin 3D printing and integrated ENEPIG-coated electrodes for biocompatibility to allow for …
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Development and implementation of an opensource DIC acquisition system, focusing on temporal synchronization with the Gleeble 3800
… The DAQ is controlled by an Arduino Nano ESP32 that sends camera trigger times, voltage values from the ±10V ADS8584S analogue to digital converter (ADC) and sync times with the Gleeble 3800. The camera trigger frequency follows a predetermined sequence and is iterated through a command in …
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Desenvolvimento e validação de um sistema PWM (Pulse Width Modulation) para aplicação de defensivos em taxa variável
… de controlador PWM utilizando microcontrolador ESP32 e placa de circuito impresso própria, que se mostrou eficiente, acessível e funcional em frequências de até 25 Hz, com potencial de aplicação em pulverizadores comerciais e em laboratórios de ensino e pesquisa. Nos experimentos, dois eixos …
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Biomimetic Agent-Based Modeling in Musical Interface Design: Ecological Dynamics, Care, and Constraint in a Physarum-Inspired Musical Instrument
… no sound. Mini Spore extends the framework to an ESP32 microcontroller, shifting from environmental tending to single-colony care and introducing genetic degradation, a mechanism that permanently diminishes the device each time a colony dies. Where Spores engages primarily the affective and …
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Decentralized and Intelligent Systems to Enhance Workplace Safety
… of IoT devices we defined and developed using ESP32-S3 devices. We detect situations where a PPE has not been used correctly using Machine Learning algorithms that analyze the Received Signal Strength Indicator (RSSI) followed by a post-processing algorithm to enhance performance. This work …
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Zařízení na výrobu krystalů
Práce se zabývá návrhem zařízení na výrobu krystalů. K tomu byla popsána teorie vzniku krystalů, provedena rešerše metod výroby krystalů a vybraná metoda byla adaptována pro použití v zařízeních. Navržená zařízení jsou dvě, odlišují se hlavně počtem automatizovaných částí procesu výroby a tím i …
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Světelná časomíra
Cílem diplomové práce je navrhnout a následně realizovat elektronické zařízení časomíry, které umožňuje odpočítávat čas a zobrazovat ho graficky pomocí LED pásu. Práce komplexně řeší teoretický návrh scénářů zobrazení, softwarovou implementaci firmware a hardwarovou konstrukci navrženého zařízení …