Magic sensor

Magic sensor

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Caption: Magic sensor. Autonomous sensor in a cup of tea. This long-lived sensor is powered solely by the changes in temperature it measures, requiring no battery. It is only active when there is a change to measure. Voltage is generated in its pyroelectric materials by changes in temperature. The voltage is converted into a radio signal transmitted by an antenna. This data can be picked up by a receiver up to 20 metres away. Similar sensors can be used to continuously check the pressure of vehicle tyres. The sensor was developed by Siemens, Munich-Perlach, Germany.

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Keywords: autonomous, battery-free, change, cup, electrical engineering, electronic, electronics, germany, glass, heat, munchen-perlach, munich-perlach, physics, pyroelectric, radio, research, saucer, sensor, siemens, tea, technology, temperature, thermometer, transparent

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