Rancang Bangun Alat Mitigasi Penyebaran Penyakit Pengunjung Berbasis NodeMCU ESP8266 Menggunakan Sensor Suhu DS18B20 dengan Sistem Internet of Things

Abstract

This research aims to prevent the spread of disease visitors by limiting visiting people. The system in this tool is made to detect the body temperature of everyone who enters. The control system consists of the NodeMCU ESP8266 microcontroller to control the entire system, and the DS18B20 temperature sensor to detect visitors' body temperature. If the visitor's body temperature is above 36°C then the relay is HIGH with a value of 1 and the doorlock will open. And if the visitor's body temperature is above 40°C then the relay is in the LOW state with a zero value and the door lock will be closed. To display visitors' body temperature data, the Blink application and the Blink web are used with the Iot interface. From the results of a comparison of the output value measurements from the DS18B20 temperature sensor with a comparison, the average percent error in the above measurement is 1.98%. And for the DS18B20 temperature sensor accuracy level is 98.02%. This system works well in responding to temperature readings from the DS18B20 sensor.