Relief may be on the horizon for anyone who has ever jumped around a room like a jack-in-the-box to get motion-sensing lights to turn back on. A new motion sensor based on metamaterials is sensitive enough to monitor a person’s breathing.
In a pair of new studies, researchers from Duke University and Institut Langevin, France, have shown that patterns made by radio waves can detect a person’s presence and location anywhere inside a room.
The findings appeared recently in Scientific Reports and Aug. 6 in the Physics Review Letters.
This new motion-sensing technology could lead to new smart home devices for energy savings, security, healthcare and gaming.
“Energy companies don’t love infrared motion detectors because they have lots of problems,” said David R. Smith, the James B. Duke Professor of Electrical and Computer Engineering at Duke. “The amount of space they can cover is limited, a person has to be within their line of sight to be detected, and probably everyone has had the experience where the lights have gone off because they’ve sat still for too long. Radio waves can get around all of these limitations.”
In their initial paper published earlier this year, the researchers took advantage of patterns created by radio waves bouncing around a room and interfering with themselves. These unique patterns change with the slightest perturbation of the room’s objects, allowing a sensitive antenna to detect when something moves in or enters the room. And by comparing how these patterns change over time, they can also be used to detect cyclical movements like a fan blade turning—or even a person breathing.
In the latest paper, the team shows that with a bit of training, the system can also extract information necessary to locate objects or people in a space. The demonstration system was taught the pattern of radio waves scattered by a triangular block placed in 23 different positions on a floor. That calibration is enough not only to distinguish between the learned 23 scenarios, but to also distinguish the positions of three identical blocks placed in any one of 1,771 possible configurations.
The technology works by taking advantage of the way radio waves behave in an enclosed room. Their ability to continuously reflect off multiple surfaces creates complex interference patterns throughout a room. In the past, this complexity has been an obstacle for systems trying to locate the origin of a signal. But Smith and his colleagues have now shown that this same complexity can be tapped to detect movement and locate objects within a room.
The Latest on: Motion-sensing
via Google News
The Latest on: Motion-sensing
- 30 Things That Dramatically Upgrade Your Bedroom For Less Than $30 On Amazonon January 9, 2020 at 7:07 pm
Scroll on for more genius little add-ons and affordable luxuries that will turn your bedroom into a sanctuary. A motion-sensing bed light that lights the way with your steps means never fumbling for a ...
- Machine learning shapes microwaves for a computer's eyeson January 9, 2020 at 1:02 pm
The system could provide a boost to object identification and speed in fields where both are critical, such as autonomous vehicles, security screening and motion sensing. The new machine-learning ...
- Soon Linksys Wi-Fi Will Be Able To Detect Every Breath You Takeon January 7, 2020 at 2:08 pm
When we went checked out Linksys’ motion-sensing Wi-Fi feature last month, we were more impressed with the potential of the technology than its actual capabilities at launch. But at CES 2020 the ...
- CES 2020 : Linksys brings 5G, Scene Control and Motion Sensing Technologyon January 7, 2020 at 11:49 am
Linksys Vehicle Presence Detection – Linksys is applying its Linksys Aware motion sensing software to in-vehicle monitoring, tackling safety issues such as children or pets being left unattended in ...
- TDK announces fault tolerant motion sensing product family for industrial applicationson January 7, 2020 at 5:28 am
For more information, go to www.invensense.com. You can download this text ...
- Linksys Unveils The Future Of Wellness And Safety With Advanced Motion Sensing Technology And In-Vehicle Presence Detection At CES 2020on January 6, 2020 at 7:01 pm
Media will get a chance to view a video demonstration of how Linksys Aware motion sensing technology works in the Wellness Pods and Vehicle Presence Detection system, as well as get an opportunity to ...
- Save over 50% on VAVA’s motion-sensing LED spotlight, now $10 Prime shippedon January 6, 2020 at 6:06 pm
Now, it’s hard to find a lower-cost light out there for the backyard. However, those in the market for two lights can score them for around $6 each thanks to this sale on a multi-pack of Mr. Beams. It ...
- Linksys Unveils The Future Of Wellness And Safety With Advanced Motion Sensing Technology And In-Vehicle Presence Detection At CES 2020on January 6, 2020 at 6:00 pm
Media will get a chance to view a video demonstration of how Linksys Aware motion sensing technology works in the Wellness Pods and Vehicle Presence Detection system, as well as get an opportunity ...
- Flex Delivers Seamless Path from Rapid Prototyping to High Volume Manufacturing of IoT Deviceson January 6, 2020 at 4:46 pm
CES – Flex (NASDAQ: FLEX), the global supply chain and manufacturing company, in collaboration with QuickLogic Corporation and Infineon Technologies AG, today announced the availability of the FLEXino ...
via Bing News