Rancang Bangun Sistem Internet of Things untuk Monitoring Suhu Mesin Kendaraan Bermotor Guna Mencegah Overheating Dengan Notifikasi Real-Time Menggunakan BLYNK

CORDANIS, Dismas Agatitus (2026) Rancang Bangun Sistem Internet of Things untuk Monitoring Suhu Mesin Kendaraan Bermotor Guna Mencegah Overheating Dengan Notifikasi Real-Time Menggunakan BLYNK. Undergraduate thesis, Universitas Katolik Widya Mandira.

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Abstract

Engine overheating in motor vehicles is a common problem that can cause serious damage to engine components such as pistons, cylinders, and cylinder heads. This study aims to design and build an Internet of Things (IoT)-based vehicle engine temperature monitoring system capable of monitoring temperature in Real-time and sending tiered warning notifications to users, as well as monitoring and recording temperature data through the Blynk application. The system uses a DS18B20 sensor, which has high accuracy for measuring engine temperature, an ESP32 microcontroller as the main controller, and an LCD to display temperature data. The research method used is the prototype method. The system is designed to provide an automatic response based on three warning levels, namely Normal (85°C - 90°C), Alert (temperature 91°C - 100°C), and Danger (temperature > 100°C). The test results show that the system has very high accuracy, where the DS18B20 sensor is capable of detecting the boiling point of water (100°C) with an error rate of 0.00%. In the system response test, the Blynk platform successfully sent warning notifications to the user's smartphone with a success rate of 80%. Under critical temperature conditions (>100°C), the system was able to provide an instant response with a notification delivery time delay of only 1 second. In addition, the historical graph feature on Blynk successfully stored temperature data continuously for maintenance purposes.

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