New Tiny Wireless Temperature Sensor Could Power IoT

A new chip that can power itself using only the energy transmitted by a Wi-Fi signal could have a major effect on the Internet of Things and mobile technology in general. The breakthrough means that the chip doesn?EU?t require a battery, or even a wire, and never needs to be recharged.

The chip (Image: Bart van Overbeeke), developed at the University of Technology at Eindhoven by researchers in The Netherlands, is a tiny wireless temperature sensor weighing only 1.6 milligrams and measuring just two square millimeters, about the size of a grain of sand. Although the most obvious application for the technology will be in developing sensors for IoT applications, the scientists behind the chip said they anticipated a variety of potential uses for it.

Energy Efficient, but Short Range

Similar sensors could be used to make smart buildings more energy efficient, the university said in a blog post. ?EU?The smart buildings of the future will be full of sensors that will respond to the residents?EU? every need, and will be as sustainable as possible,?EU? according to the post. ?EU?Like heating and lighting that only switches on when someone is in the room. That?EU?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.?EU?

Although the current chip has a range of only 2.5 centimeters, the researchers said they expect to be able to extend that distance up to a meter within a year, and eventually reach a goal of five meters. To work, the sensor requires the help of a special router equipped with an antenna capable of transmitting radio waves to power the chip.

The radio signals are targeted on the sensor, which means the router requires minimal energy to work. The sensor is also...

Comments are closed.