Tiny wireless Temperature sensor

This tiny temperature sensor is powered by radio waves, from its own wireless networking.

Scientists at TU/e developed a very small wireless temperature sensor, powered in a very special way: ‘from the radio waves that are part of the sensor’s wireless network.’

Image credit: Bart van Overbeeke/Eindhoven University of Technology

This sensor, light as a grain of sand, can be “painted” into walls, to help monitor temperature, light, movement and more, to protect the smart house of the future.

According to the researchers, the sensor needs no wire, nor a battery that would have to be replaced. ‘The arrival of such sensors is an important development on route towards smart buildings.’

“The smart buildings of the future will be full of sensors that will respond to the residents’ every need, and will be as sustainable as possible. Like heating and lighting that only switches on when someone is in the room. That’s only possible if these sensors are wireless and need no batteries, otherwise in a large building you would have to change the batteries every day. This is  demonstrated by TU/e researcher Hao Gao who will be awarded his PhD on Monday 7 December for his thesis in which he developed a sensor that measures just 2 square millimeters and weights a mere 1.6 milligrams, equivalent to a grain of sand.”

via Engadget

source Eindhoven University