A thermoelectric wearable body heat-powered emergency locator is a device designed to generate electrical power using the temperature difference between the wearer's body and the surrounding environment. This generated power is then utilized to operate an emergency locator system, which can help locate the wearer in case of an emergency.
The working principle of such a device involves several key components and processes:
Thermoelectric Generators (TEGs): TEGs are the core technology behind this wearable. TEGs are composed of thermoelectric materials that exhibit the Seebeck effect, which is the phenomenon where a voltage is generated when a temperature gradient is applied across a material. In the case of the wearable, one side of the TEG is in contact with the wearer's body, while the other side is exposed to the ambient environment. The body heat creates a temperature difference across the TEG, resulting in the generation of a voltage potential.
Thermal Energy Harvesting: The heat radiated from the wearer's body is absorbed by the TEG's hot side, which is in direct contact with the skin or clothing. This side of the TEG becomes warmer, while the opposite cold side remains cooler due to its exposure to the surrounding air.
Electricity Generation: As a result of the temperature difference across the TEG, electrons within the thermoelectric material begin to move from the hot side to the cold side, creating an electric current. This electric current is harnessed and stored in a battery or capacitor integrated into the wearable device.
Emergency Locator System: The generated electrical power is used to operate an emergency locator system. This system can include various components such as GPS (Global Positioning System) receivers, radio frequency (RF) transmitters, and possibly even distress beacons. The GPS receiver determines the wearer's precise location, while the RF transmitter broadcasts this location to potential search and rescue teams.
Efficiency and Optimization: The efficiency of the thermoelectric wearable depends on factors such as the quality of the thermoelectric materials used, the temperature gradient, and the overall design of the device. Researchers and engineers work to optimize the wearable's efficiency to ensure sufficient power generation for the emergency locator system while keeping the device lightweight and comfortable for the wearer.
Wearable Design: The device is designed to be worn comfortably on the body, usually as part of clothing or accessories. The thermoelectric modules and associated electronics are integrated into the wearable without causing discomfort to the user.
Overall, the thermoelectric wearable body heat-powered emergency locator relies on the conversion of body heat into electrical energy through thermoelectric generators, which is then used to power an emergency locator system, enabling quick and accurate location tracking during critical situations.