Electric Cooking Appliance Sensor Control for Fire Prevention
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Solution Overview
Problem
Microwave and oven fires are commonly caused by overheated items like aluminum foil or food packaging, and electrical issues such as power surges and shorted-out power supply units, necessitating immediate fire extinguishment to prevent property damage.
Innovation Solution
A system with sensors, including carbon monoxide and smoke detectors, automatically shuts off electric cooking apparatuses when dangerous levels of carbon monoxide or smoke are detected, distinguishing between threats from overheated items and electrical issues to prevent fires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensors are added to detect carbon monoxide and smoke, then safety is improved, but device complexity increases
Solution Approach 1:
The system divides safety monitoring into separate sensor functions: a carbon monoxide sensor for detecting CO gas, a smoke detector for detecting smoke particles, and a temperature sensor for detecting overheating conditions. Each sensor independently monitors a specific hazard, allowing the system to achieve comprehensive safety coverage without requiring a single complex sensor system.
Solution Approach 2:
A control circuit acts as an intermediary between the sensors and the cooking apparatus. The control circuit receives signals from multiple sensors, processes the information, and determines when to shut off the cooking apparatus based on predefined thresholds. This intermediary component coordinates the sensor inputs and translates them into appropriate safety responses.
2Reliability
If automatic shutdown functionality is implemented, then fire prevention is improved, but loss of time increases
Solution Approach 1:
The system is pre-configured with shutdown thresholds for carbon monoxide levels, smoke detection, and temperature conditions. When any sensor detects a value exceeding its threshold, the pre-programmed shutdown function is immediately activated without requiring manual intervention or decision-making time. This preliminary setup ensures rapid response to hazardous conditions.
Solution Approach 2:
The system continuously monitors sensor outputs and provides real-time feedback to the control circuit. When sensor readings exceed safe thresholds, the feedback mechanism triggers an automatic shutdown of the cooking apparatus. This closed-loop feedback system ensures that safety responses are activated promptly based on current operating conditions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Prevents fires and property damage by safely shutting off cooking operations when hazardous conditions are detected, ensuring a secure cooking experience for homeowners and restaurants.
Implementation Method 1
causing a carbon monoxide sensor of the one or more sensors to measure a level of carbon monoxide
Implementation Method 2
one or more sensors including a carbon monoxide sensor
Data Source
AI summary
A device for controlling an electric cooking apparatus, may include one or more processors, memory, and one or more sensors including a carbon monoxide sensor. The one or more processors may determine, based on at least one of an electric signal output from the cooking apparatus or an electric signal output from the one or more sensors, whether the cooking apparatus performs an operation. In response to determining that the cooking apparatus performs an operation, the one or more processors may cause the carbon monoxide sensor to measure a level of carbon monoxide. The one or more processors may determine whether the level of carbon monoxide exceeds a first threshold. In response to determining that the level of carbon monoxide exceeds the first threshold, the one or more processors may control the cooking apparatus to stop performing the operation.