Researchers at UBC Okanagan have developed what they are calling an end-to-end solution for wearable technology. The new type of sensor, combined with machine learning, may be the missing piece of the puzzle for scientists looking for a practical way of monitoring and interpreting human motion.—Image: YouTube

Researchers at UBC Okanagan have developed what they are calling an end-to-end solution for wearable technology. The new type of sensor, combined with machine learning, may be the missing piece of the puzzle for scientists looking for a practical way of monitoring and interpreting human motion.—Image: YouTube

UBCO engineers advance capability of wearable tech

A new, low-cost, ultra-stretchable sensor can do more with less say UBCO officials

Creating the perfect wearable device to monitor muscle movement, heart rate and other tiny bio-signals without breaking the bank has inspired scientists to look for a simpler and more affordable tool.

Now, a team of researchers at UBC’s Okanagan campus have developed a practical way to monitor and interpret human motion, in what may be the missing piece of the puzzle when it comes to wearable technology.

What started as research to create an ultra-stretchable sensor transformed into a sophisticated inter-disciplinary project resulting in a smart wearable device that is capable of sensing and understanding complex human motion, explains School of Engineering professor Homayoun Najjaran.

The sensor is made by infusing graphene nano-flakes (GNF) into a rubber-like adhesive pad. Najjaran says they then tested the durability of the tiny sensor by stretching it to see if it can maintain accuracy under strains of up to 350 per cent of its original state. The device went through more than 10,000 cycles of stretching and relaxing while maintaining its electrical stability.

“We tested this sensor vigorously,” said Najjaran. “Not only did it maintain its form but more importantly it retained its sensory functionality. We have further demonstrated the efficacy of GNF-Pad as a haptic technology in real-time applications by precisely replicating the human finger gestures using a three-joint robotic finger.”

The goal was to make something that could stretch, be flexible and a reasonable size, and have the required sensitivity, performance, production cost, and robustness. Unlike an inertial measurement unit—an electronic unit that measures force and movement and is used in most step-based wearable technologies—Najjaran said the sensors need to be sensitive enough to respond to different and complex body motions. That includes infinitesimal movements like a heartbeat or a twitch of a finger, to large muscle movements from walking and running.

School of Engineering professor and study co-author Mina Hoorfar said the results may help manufacturers create the next level of health monitoring and biomedical devices.

“We have introduced an easy and highly repeatable fabrication method to create a highly sensitive sensor with outstanding mechanical and electrical properties at a very low cost,” says Hoorfar.

To demonstrate its practicality, researchers built three wearable devices including a knee band, a wristband and a glove. The wristband monitored heartbeats by sensing the pulse of the artery. In an entirely different range of motion, the finger and knee bands monitored finger gestures and larger scale muscle movements during walking, running, sitting down and standing up. The results, said Hoorfar, indicate an inexpensive device that has a high-level of sensitivity, selectivity and durability.

Hoorfar and Najjaran are both members of the Okanagan node of UBC’s STITCH (SmarT Innovations for Technology Connected Health) Institute that creates and investigates advanced wearable devices.

The research, partially funded by the Natural Sciences and Engineering Research Council, was recently published in the Journal of Sensors and Actuators A: Physical.

To report a typo, email: edit@kelownacapnews.com.


@KelownaCapNews
newstips@kelownacapnews.com

Like us on Facebook and follow us on Twitter.

Just Posted

(Dave Ogilvie photo)
One injured after being pinned by fallen forklift near Peachland

West Kelowna emergency crews responded to reports of a person stuck under a forklift

(Big White Ski Resort/Contributed)
Big White’s big clean-up: Large turnout for post-melt mountain tidy

More than 165 people showed up to help gather the litter left behind from the winter season

Mounties cover a burgundy truck with a tent at Buckerfields in West Kelowna on Monday, June 14. The RCMP is investigating after a woman’s body was found inside the truck. (Amandalina Letterio/Capital News)
West Kelowna RCMP investigating suspicious death after body found in truck

Police responded to a truck parked out front of a Main Street business where the body was found

(Jenna Cocullo / The Northern View)
Delays expected on Lakeshore Road this week

Northbound traffic on Lakeshore between Richter and Barrera will be detoured for paving

David Larsen, left, and co-host Tony Peyton. (K96.3/Twitter)
Popular Kelowna radio host dies after battle with cancer

David Larsen was half of the longtime Kelowna morning-show duo David and Tony

Singer-songwriter Jann Arden is pictured with a draft horse. (Canadian Horse Defence Coalition)
Jann Arden backs petition to stop live horse export

June 14 is the International Day to End Live Export of Animals

Montreal Canadiens goaltender Carey Price (31) is scored on by Vegas Golden Knights defenseman Alec Martinez, not pictured, during the second period in Game 1 of an NHL hockey Stanley Cup semifinal playoff series Monday, June 14, 2021, in Las Vegas. (AP Photo/John Locher)
Habs fall 4-1 to Vegas Golden Knights in Game 1 of NHL semifinal series

Match was Montreal’s first game outside of Canada in 2021

Penticton Overdose Prevention Society co-founders Desiree Franz, Shane Surowski and Stephanie Lines have created the city’s first unsanctioned public overdose prevention site using an old wine-tour bus. The site began operations in June 2021. (Desiree Franz/Facebook)
Volunteers launch Penticton’s first public supervised injection site

2021 is on pace to be the deadliest year for overdoses in Penticton on record

Kelowna-Lake Country MLA Norm Letnick, assistant deputy speaker at the B.C. legislature, presides over committee discussions. The legislature is completing its delayed spring session this week, with most MLAs participating by video conference. (Hansard TV)
B.C.’s daily COVID-19 infections dip below 100 over weekend

Only 68 new cases recorded Monday, four additional deaths

Cannabis bought in British Columbia (Ashley Wadhwani/Black Press Media)
Is it time to start thinking about greener ways to package cannabis?

Packaging suppliers are still figuring eco-friendly and affordable packaging options that fit the mandates of Cannabis Regulations

B.C. ambulance station in Revelstoke is expected to get a new system called the Scheduled On-Call (SOC) this fall. (Liam Harrap - Revelstoke Review)
B.C. ambulance changes could put Revelstoke residents at risk, warn local paramedics

Paramedics said to expect a substantial increase in ambulance response time starting this fall

Jane Linden
KCR: Volunteering keeps you active

Kelowna Community Resources shares stories of its volunteers in a weekly column

This goose family went for a leisurely stroll down Vernon’s Main Street Saturday, April 25. (Dave Deshane photo)
Controversial Vernon goose cull won’t fly this year

Necessary permit procedures held up at a federal level

The BC Ferries website went down for a short while Monday morning following a provincial announcement that recreational travel between health authorities can resume Tuesday. (Black Press Media file photo)
BC Ferries’ website crashes in wake of provincial reopening announcement

Website back up now, recreational travel between health regions to resume as of Tuesday

Most Read