Energy harvesting uses energy from the environment such as light, motion or heat in order to supply power to small electronic devices. Energy-autonomous, maintenance-free and wireless systems with maximum uptime and unlimited standby time become reality. This way a power supply of devices at remote locations is possible. Areas of application are, for example, sensor networks for monitoring of machines and plants (Condition Monitoring), tire pressure sensors or wireless light switches and sensors for building automation.
At the embedded world Fraunhofer IIS will, among others, demonstrate the Bluetooth low-energy wristband BlueTEG with thermoelectric energy supply. BlueTEG measures sensor readings such as the ambient temperature and acceleration rates and transmits this data via Bluetooth to a tablet. BlueTEG uses the temperature difference between the skin and the surrounding air to produce electrical energy. BlueTEG does not require a battery and can be used with all types of body-worn or wireless sensor systems.
Bluetooth-LE wristband, powered with energy harvesting