REFERENCE DESIGN FOR SMALL WEARABLES FOR SOCIAL-DISTANCING

STMicroelectronics, a global semiconductor leader serving customers across the spectrum of electronics applications, announces the availability of a compact and cost-effective reference design ideally suited for monitoring social distancing, assuring remote operation, provisioning, as well as warning, anti-tampering, and potentially providing contact tracing to protect human health in all environments, including in response to global or local pandemic conditions.

REFERENCE DESIGN FOR SMALL WEARABLES FOR SOCIAL-DISTANCING

Leveraging Bluetooth Low Energy technology through its incorporation of ST’s ultra-low-power BlueNRG-2 System-on-Chip with tunable RF output power, the BlueNRG-Tile reference design measures the signal strength of nearby Bluetooth non-connecting beacons and, in real-time, calculates proximity to these sources. The circuit can be provisioned and then operate, issuing warnings when another beacon intrudes on an adjustable perimeter or when tampered with – even when not connected to a smartphone or 5G network. The base reference design can be supplemented with ST’s S2-LP sub-GHz ultra-low-power RF transceiver to add bi-directional tag-to-cloud communication through the Sigfox “0G” Global Network, allowing private and anonymous tag provisioning, notifications, and an advisory return-channel for emergency warnings. 

To assure power economy and extend battery lifetime, the ultra-low power components are further enhanced with a MEMS (Micro-Electro-Mechanical Systems) accelerometer that power cycles the unit when it isn’t moving. Optionally, internal or external memory could provide long-term storage of nearby beacons, allowing contact tracing.

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