A Smart System for the University Chemical Laboratory Using IoT

Abstract

University chemical laboratories are constantly exposed to multiple kinds of threats, including frequent explosions, theft of high-value equipment, sensitive data, dual-use chemicals that can be used in weapons, and high energy consumption. Therefore, the purpose of this paper is to develop an automated system for the university's chemical laboratory while also providing it with safety and security using IoT. The proposed system is divided into three parts. The first part is security, which employs a Passive Infrared (PIR) sensor and Radio-Frequency Identification (RFID) module to keep the laboratory secure at all times. The second part is automation, which uses the "Google Assistant" embedded into the Android smartphone, HC-05 Bluetooth module, an Arduino Uno, and a relay module. It is intended to allow the laboratory supervisor to remotely monitor and control different laboratory electrical appliances. The third part is safety, which monitors the laboratory environment using a flame sensor, MQ3 smoke sensor, DHT22 temperature and humidity sensor, and MQ135 air quality sensor. The data from the sensors is transferred to the Arduino Uno, which then takes the necessary action in the event of an emergency. The results showed that the proposed system works 98% correctly under the conditions of the investigation, which indicates that it is trustworthy, dependable, and efficient.