Scientists have designed a minute temperature sensor that functions on “near-zero-power.” It could expand the life span of a wearable gadgets’ battery that observes health, as well as smart home systems and Internet of Things. The sensor, designed by scientists at the University of California, San Diego, the U.S, functions on just 113 Picowatts of power, which is 628 x times lower juice than the usual standards and almost 10 Billion x times lesser than a watt.
It can expand the life span of a battery of implantable and wearable gadgets that observes body temperature, Internet of Things devices, environmental monitoring systems, and smart home monitoring systems. The tech can also allow a new category of gadgets that can be fueled by yielding energy from small-power sources, such as the surrounding environment or the body, scientists claimed.
“Our aim is to develop wearable gadgets that are so invisible, so unobtrusive that customers are virtually not aware that they are wearing their wearables devices,” stated a professor at University of California at San Diego, Patrick Mercier. “Our innovative “near-zero-power” tech could one day get rid of the need to recharge or ever change a battery,” claimed Mercier. “We are developing systems that have such small power needs that they could probably function for years on merely a minute battery,” claimed a PhD candidate at Mercier’s lab, Hui Wang.
The temperature sensor is incorporated into a small chip with a dimension of 0.15 mm2 in area. It runs at temperatures varying from 40 degrees Celsius to minus 20 degrees Celsius. Its performance is reasonably analogous to that of the usual standards even at “near-zero-power”, scientists said. One tradeoff is that the sensor has a reaction time of roughly one temperature update each second, which is a tab bit slower than current temperature sensors.
On the other hand, this reaction time is enough for gadgets that run in the homes, other environments, and on the human body where the temperature does not vary quickly, scientists said. Moving on, the squad is operating to enhance the precision of the temperature sensor as well as optimizing its design.