Wolk launches Nordic-powered inflatable hip airbag to scale back severity, impression of falls

Wolk launches Nordic-powered inflatable hip airbag to scale back severity, impression of falls

Dutch firm Wolk is producing a wise wearable airbag designed to be used by the aged or these susceptible to severe falls. The ‘Wolk’ may be worn discretely beneath the person’s clothes, and is obtainable in 4 sizes in each a belt and shorts model. If it detects that the wearer is about to fall, the system will activate to inflate the airbag inside 75 milliseconds, lessening the impression of the autumn on the hip and lowering the severity of hip accidents.

Superior fall detection 

“The Wolk makes use of six movement sensors to register each motion as much as 500 occasions per second,” says Filippo van Hellenberg Hubar, CEO at Wolk. “The software program then processes this information, and determines constantly whether or not the person may be falling. When the superior algorithm recognises a fall, the airbag will inflate and shield the hip towards harm.” The proprietary algorithm is supervised utilizing the computational energy of the Nordic Semiconductor nRF9160 SiP, via its 64 MHz Arm Cortex-M33 processor with 1 MB Flash and 256 KB RAM. 

As soon as the software program has detected a fall and the airbag has inflated, an alarm is triggered, and a notification is shipped to the Cloud utilizing the nRF9160 SiP’s LTE-M/NB-IoT connectivity. From there the notification is forwarded to a nominated member of the family or good friend by way of the mobile community. From the Cloud-based dashboard, customers can view dwell information from the Wolk, in addition to historic data (corresponding to earlier fall alarms).

Lengthy battery life

The Wolk can obtain 10-to-20 hours of battery life between costs utilizing a Li-Po battery, relying on the exercise degree of the wearer. The battery lifetime is made doable partly as a result of energy consumption of the nRF9160 SiP, which helps each PSM and eDRX energy saving modes. For each LTE-M and NB-IoT the PSM ground present is as little as 2.7 µA, and with an eDRX interval of 655 s the common present is 6 µA for LTE-M and 9 µA for NB-IoT.

“Energy consumption was key to this utility, so the wonderful energy effectivity and energy administration of the Nordic SiP made it the plain alternative,” van Hellenberg Hubar says. “We additionally selected the nRF9160 SiP based mostly on its value, measurement, availability, and multimode functionality.

“One other key purpose we chosen the nRF9160 SiP was the technical assist supplied by Nordic,” continues van Hellenberg Hubar. “For instance, the corporate offered precious help with the {hardware} design evaluation, as a result of not all {hardware} engineers are modem specialists.”

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