Project Description¶
Introduction¶
This Social Distancing Tag (SDT) is a reference application leveraging the SmartBond Wireless Ranging (WiRa) SDK. The application targets mainly, but not exclusively, wearable devices allowing its users to be warned in the case they do not comply with social distancing recommendations. In the COVID-19 pandemic context, the SDT users should not gather with a physical distance lower than 1.5m. The users in a professional environment should be warned they are not complying with the recommended physical distanciation.
Due to it high level of integration and the support of advanced ranging features, the DA1469x product family is a great fit for this application.
The SDT application is built on top of the SmartBond Wireless Ranging (WiRa) SDK, for more information please visit the SmartBond™ Wireless Ranging SDK page.
Main features¶
High accuracy distance estimation
Operates 8 hours per day, 5 days a week on a 280mAh battery
Software Upgradeable
Built-in CC/CV battery charger (USB Charger Detection)
Advanced visual alert (RGB LED, ERM, Buzzer, Audio…)
RTC for accurate log timestamp with Bluetooth profile for RTC setup
Each device uniquely identifiable
Interaction logging (non-volatile memory)
Hardware description¶
Block Diagram¶
Part Selection¶
Part are indicated for reference as tested during the application development. They can be replaced by parts with similar specifications. Please refer to the DA1469x datasheet and AN-B-066 Hardware Design Guidelines for information about integration requirements.
Flash: MX25U3235F
Battery: >280 mAh LiPo battery
Crystals:
32MHz crystal: XRCGB32M000F1H00R0
32KHz crystal: ABS07-32.768KHZ-7-T
Visual alert: LED
Inverted L shaped antenna: Dialog development kit Gerber