Thermoelectric Fire Alert Device for Wildfire Detection
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Solution Overview
Problem
Current fire detection and alerting systems in outdoor environments, such as forests, savannas, or jungles, fail to provide early and accurate detection of wildfires, leading to delayed control measures as they are not effective in covering large areas efficiently.
Innovation Solution
A fire detection and alerting device comprising a thermoelectric generator (TEG) unit with a thermally isolated cold part and a heat-exposed hot part, generating electrical energy from temperature differences to activate an alerting unit that transmits a signal indicative of the fire's location, allowing for quick firefighter deployment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a fire detection device is deployed in outdoor environments to cover large areas, then the detection coverage area is improved, but the device complexity increases due to the need for thermal isolation mechanisms and thermoelectric generators
Solution Approach 1:
The device is divided into two distinct parts: a first part that is thermally isolated from the environment and a second part that is thermally exposed. This segmentation allows each part to serve its specific function - the isolated part maintains a stable baseline temperature while the exposed part detects temperature changes from fires, thereby achieving large-area detection without requiring the entire device to be complex
Solution Approach 2:
A thermoelectric generator is introduced as an intermediary component between the thermally isolated first part and the thermally exposed second part. This intermediary converts the temperature difference between the two parts into electrical energy, enabling the alerting unit to operate without external power sources while keeping the thermal isolation mechanism relatively simple
2Use of energy by moving object
If the alerting unit is kept inactive until fire detection to conserve energy, then the energy consumption is reduced, but the response time may be delayed until the temperature difference reaches a certain value
Solution Approach 1:
The device monitors the temperature difference parameter between the first and second parts continuously. When this parameter reaches a predetermined threshold value indicating fire conditions, the alerting unit transitions from inactive to active state. This parameter-based activation ensures energy conservation during normal conditions while enabling rapid response when fire is detected
Solution Approach 2:
The patent replaces traditional mechanical or electronic switching mechanisms with a thermoelectric generation-based activation system. The temperature difference directly generates electrical energy through the thermoelectric generator, which automatically activates the alerting unit when fire conditions are present, eliminating the need for complex power management circuits
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
The device enables early and accurate detection of wildfires, facilitating rapid control measures by generating electrical energy from temperature differences between the isolated and exposed parts, triggering alerts that pinpoint the fire's location for efficient firefighting efforts.
Implementation Method 1
The temperature difference between the two ends of the TEG unit generates an electrical energy, e.g. a voltage difference that is supplied to an alerting unit in the device
Data Source
AI summary
An outdoors fire alerting device, including a first part and a second part spaced apart from one another by a thermoelectric generator unit, the first part being shaped for insertion into a static object and the second, exposed part intended for being exposed to the ambient environment while the first part is retained within the static object; the first part, the second part and the thermoelectric generator unit being integrally coupled to one another, the thermoelectric generator unit being configured to generate electrical energy in response to a temperature difference between the first part and the second part, an alerting unit electrically coupled to the thermoelectric generator unit and configured to transmit a signal indicative of fire alert when the temperature difference between the first and the second part reaches a predefined value, where the first part has a generally cylindrical shape and is elongated along a first axis, where the first part is axial symmetric about the first axis.