Nordic Semiconductor today announces that Paris, France-based WB Technologies has released ‘MAPO® Solaire’, a Bluetooth® Low Energy (Bluetooth LE) wirelessly connected device that measures the user’s exposure to ultraviolet (UV) light. MAPO Solaire employs Nordic’s multiple award-winning nRF51822 System-on-Chip (SoC) to provide Bluetooth LE wireless connectivity between the device and Bluetooth 4.0 (and later) smartphones and tablets.
The device is housed in a textile-based pouch that can be attached, for example, to the user’s bag or clothing when they are outdoors and exposed to UV light. MAPO Solaire’s UV sensor continuously measures UV exposure, and using Bluetooth LE wireless connectivity provided by the nRF51822 SoC, syncs captured data to the accompanying MAPO Solaire app on the user’s iOS smartphone or tablet. The app determines the user’s maximum daily recommended UV exposure via a series of questions based on the Fitzpatrick scale, a method of estimating the response of different skin types to UV light.
The user can also indicate activities or any application of sunscreen that will modulate the absorbed UV dose, and then either via the device directly, or from the app, the user will be alerted when they are approaching their maximum recommended daily UV exposure. The app also allows the user to follow the evolution in real time of their UV intake, UV indexes, and UV protection used. A record of historical UV exposure is also available.
MAPO Solaire employs a 100mAh rechargeable battery that in regular use can provide a week of UV exposure monitoring between recharge, thanks in part to the ultra-low power consumption of the Nordic SoC.
Nordic’s nRF51822 is a powerful and flexible multiprotocol SoC ideally suited for Bluetooth LE and 2.4GHz ultra low-power wireless applications. The nRF51822 is built around a 32-bit ARM® Cortex™ M0 CPU, 2.4GHz multiprotocol radio, and 256kB/128kB Flash and 32kB/16kB RAM. The SoC is supplied with Nordic’s S130 SoftDevice, a Bluetooth 4.2 qualified concurrent multi-link protocol stack solution supporting simultaneous Central/Peripheral/Broadcaster/Observer role connections.
“We selected the nRF51822 SoC because of its size, ultra low power consumption, and the ability to perform Over-the-Air firmware updates,” says Stanislas Vandier, President and Co-Founder of WB Technologies. “Nordic’s support has been fantastic both in terms of product performance, availability of technical support, and problem solving.”