IOT-Based Smart kitchen Safety System

Abstract

Residential kitchens are considered highly sensitive areas due to the presence of combustible fuels, electrical appliances, and high-temperature cooking processes, making them a critical focus for IoT-based smart kitchen safety systems as discussed in this mid-defense thesis document from the Department of Electrical Engineering following the IEEE citation style. Accidents caused by leaking LPG and the buildup of smoke are still frequent, usually due to late detection or the absence of automatic response systems. The central argument of this thesis discusses how an IoT-Based Smart Kitchen Safety System was created to tackle safety issues, covering its design, development, and testing phases. The suggested system integrates MQ-5 and MQ-2 semiconductor gas sensors with an ESP32 microcontroller to carry out ongoing environmental monitoring. The main function of the MQ-5 sensor is to detect leaks of LPG, whereas the MQ-2 sensor is designed to recognize smoke and various flammable gases. The ESP32 utilizes its built-in 12-bit Analog-to-Digital Converter (ADC) to handle analog sensor signals. Once gas levels surpass the set safety limits, the system will trigger a buzzer alarm and activate an exhaust fan using a relay module to decrease the accumulation of gas. Moreover, Wi-Fi connection enables sending data instantly to a cloud system, which helps in monitoring from a distance and receiving notifcations. They put together a functional hardware model and tested it in a controlled environment with gas and smoke. The outcomes of the experiment show that the sensor behaves consistently after calibration, the system responds promptly, the exhaust activation is reliable, and there is steady communication with the cloud. The entire system shows how a cost-effective embedded IoT solution can greatly enhance home kitchen safety without the need for costly commercial equipment.