IoT-Based Intelligent Residential Kitchen Fire Prevention System

Our paper presents a novel fire prevention system based on the Internet of Things (IoT) that uses the Ethereum distributed ledger (blockchain) to build a verifiable record of fire risk events. Our proposed system can operate off- and online and does not require additional electrical installation, thereby lowering homeowner costs. The device plugs into the stove’s outlet, and when smoke is detected, the device discontinues electricity to the stove and informs the homeowner via a smartphone notification. The homeowner can restore electricity through a wireless button located close to the stove. The system uses a webservice based on Google Firebase to establish connection between the IoT device and the smartphone. Our system uses a Smart Contract (SC) engraved in the blockchain to register trigger events from the IoT device and its sensor. We use a virtual Ethereum node supported by Infura infrastructure to provide stability when an event is published. Apps are available for Android and iOS devices that allow a homeowner to control and turn off their stove and receive alerts about the state of the sensors. We propose a 950–50 ms sleep–wake cycle configuration for the IoT module to limit power consumption. Our configurations allow our system to consume on average only 9.8 mW. Our product is an innovative achievement for fire prevention systems.