Stovetop safety system
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Solution Overview
Problem
Stove-related fires, particularly due to unattended use or forgetfulness, pose a significant risk, especially in households with older or disabled users, leading to a high number of injuries and deaths.
Innovation Solution
A stovetop safety system incorporating sensors to detect object presence and burner status, a microcontroller with timers, and a transceiver to send alerts or deactivate the burner if a threshold cooking or non-cooking time is exceeded, ensuring safety through alerts or automatic shutdown.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the stovetop burner is left activated for extended periods, then cooking productivity is improved, but the risk of fire and safety hazards increases
Solution Approach 1:
The system performs preliminary actions by detecting object presence on the burner and starting a timer before the cooking period ends. It prepares alerts and notifications in advance, and can automatically shut down the burner before a fire hazard occurs, thus preventing harmful effects while allowing productive cooking time
Solution Approach 2:
The system continuously monitors the burner status and object presence, providing feedback through alerts to the user and automatic shutdown commands. This closed-loop feedback mechanism ensures that prolonged activation does not lead to fire hazards while maintaining cooking productivity
2Object-affected harmful factors
If the stovetop burner is activated without an object present, then energy is wasted, but safety hazards are reduced
Solution Approach 1:
The system performs preliminary detection of object presence before allowing burner activation to continue. If no object is detected, it prepares an alert and automatic shutdown sequence, preventing both energy waste and safety hazards from unattended burner operation
Solution Approach 2:
The system autonomously monitors itself for object presence and automatically shuts down the burner when no cooking vessel is detected, eliminating the need for manual user intervention while preventing both energy waste and safety hazards
3Reliability
If monitoring and safety systems are added to the stovetop, then safety is improved, but device complexity increases
Solution Approach 1:
The system uses multi-functional components that serve multiple purposes: the sensor detects both object presence and burner status, the microcontroller manages timing and control logic, and the transceiver handles both local alerts and remote notifications. This universality improves safety while minimizing the increase in device complexity
Solution Approach 2:
The system autonomously performs safety monitoring, alert generation, and burner shutdown without requiring external complex control systems. This self-service capability improves reliability while keeping the overall system complexity manageable through integrated autonomous operation
Data Source
AI summary
A cooking device safety system includes a stovetop cooking device with a first sensor to detect the presence of an object on or adjacent to a burner; a second sensor to detect a condition of the burner; a transceiver to send a signal from the first and/or the second sensor to a remote device; a microcontroller with a timer; and a signal output device. A method for providing a safe cooking device environment includes detecting a status of a cooking device and detecting the presence of an object on or in the cooking device. When the cooking device has an activated status and an object is detected, the system detects whether a threshold cooking time has been exceeded. If the threshold has been exceeded, the system produces an alert via a signal output device; and/or sends an alert to a remote device; and/or inactivates the cooking device.