Incredible Ai
A new wearable sensor could save the lives of heart-failure patients.
The artificially intelligent technology helps doctors remotely detect critical changes days before a crisis occurs.
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Forget the Thighmaster. Someday you might add a spring to your step when walking or running using a pair of mechanically powered shorts.
Step up: The lightweight exoskeleton-pants were developed by researchers at Harvard University and the University of Nebraska, Omaha. They are the first device to assist with both walking and running, using an algorithm that adapts to each gait.
Making strides: The super-shorts show how wearable exoskeleton technology might someday help us perform all sorts of tasks. Progress in materials, actuators, and machine learning has led to a new generation of lighter, more powerful, and more adaptive wearable systems. Bulkier and heavier commercial systems are already used to help people with disabilities and workers in some factories and warehouses.
Researchers have developed a new Artificial Intelligence (AI)-based technique that can detect low-sugar levels from raw ECG signals via wearable sensors without any fingerprint test. Current methods to measure glucose requires needles and repeated fingerpicks over the day. Fingerpicks can often be painful, deterring patient compliance.
The new technique developed by researchers at University of Warwick works with an 82 per cent reliability, and could replace the need for invasive finger-prick testing with a needle, especially for kids who are afraid of those.
“Our innovation consisted in using AI for automatic detecting hypoglycaemia via few ECG beats. This is relevant because ECG can be detected in any circumstance, including sleeping,” said Dr Leandro Pecchia from School of Engineering in a paper published in the Nature Springer journal Scientific Reports.
One day, soldiers could cool down on the military battlefield—preventing heat stroke or exhaustion—by using “wearable air conditioning,” an on-skin device designed by engineers at the University of Missouri. The device includes numerous human health care applications such as the ability to monitor blood pressure, electrical activity of the heart and the level of skin hydration.
The findings are detailed in the journal Proceedings of the National Academy of Sciences.
Unlike similar products in use today or other related concepts, this breathable and waterproof device can deliver personal air conditioning to a human body through a process called passive cooling. Passive cooling does not utilize electricity, such as a fan or pump, which researchers believe allows for minimal discomfort to the user.
Sarcos sprinkled the flavor of the future on last year’s CES show when it revealed the latest evolution of its robotic exoskeleton technology, the Guardian XO. At this year’s CES, the Salt Lake City-based robotics specialist and Delta Airlines announced pilot trials, with Delta employees set to be among the first workers to suit up in the battery-powered, force-multiplying wearable robots, enjoying superhuman strength and endurance without body wear and tear.
Few things make us want to trade a cushy gig of rambling away about gadgets semi-coherently on the Web for a life of physical labor like the Guardian XO. A full-body robotic suit that turns its wearer into something of a near-cyborg superhero, the XO looks straight out of a dystopian sci-fi thriller and brings the capabilities to match. It bears its own substantial weight, along with 200 additional pounds (91 kg) of payload, letting the wearer lift heavy objects for hours without physical strain or fatigue.
Sarcos says the Guardian XO takes under 30 seconds to put on or take off, responds in milliseconds to the operator’s movements, and amplifies his or her strength by up to 20 times. It offers eight hours of battery power, and a hot-swapping battery system allows users to extend that operational time. All in all, it’s a highly impressive machine meant to help humans complete obligatory lifting tasks that would be difficult or impossible to tackle with more conventional lifting machinery.
Recorded at ApplySci’s Wearable Tech + Digital Health + Neurotech conference — November 14, 2019 | Harvard Medical School.
Scientists from Tokyo Metropolitan University have used aligned “metallic” carbon nanotubes to create a device which converts heat to electrical energy (a thermoelectric device) with a higher power output than pure semiconducting carbon nanotubes (CNTs) in random networks. The new device bypasses the troublesome trade-off in semiconductors between conductivity and electrical voltage, significantly outperforming its counterpart. High power thermoelectric devices may pave the way for more efficient use of waste heat, like wearable electronics.
Thermoelectric devices can directly convert heat to electricity. When we think about the amount of wasted heat in our environment like in air conditioning exhausts, vehicle engines or even body heat, it would be revolutionary if we could somehow scavenge this energy back from our surroundings and put it to good use. This goes some way to powering the thought behind wearable electronics and photonics, devices which could be worn on the skin and powered by body heat. Limited applications are already available in the form of body heat powered lights and smartwatches.
The power extracted from a thermoelectric device when a temperature gradient is formed is affected by the conductivity of the device and the Seebeck coefficient, a number indicating how much electrical voltage is generated with a certain difference in temperature. The problem is that there is a trade-off between the Seebeck coefficient and conductivity: the Seebeck coefficient drops when the device is made more conductive. To generate more power, we ideally want to improve both.
