Imagine you're at a bustling concert, a crowded theme park, or a busy festival. You want to keep tabs on your friend or your child, who has a UWB-capable device (the "target device")—this could be a specialized UWB tracker on their wristband, a UWB-enabled phone in their pocket, or even a smart accessory with built-in UWB. In such a packed environment, instead of trying to pull out your large, expensive smartphone to locate them, which can be risky due to the high probability of snatching or accidental drops in the crush of people, use your watch or glasses, without needing its own UWB hardware, which can then display an arrow pointing in their direction, show a real-time distance, or even a simple map indicator, allowing you to easily navigate towards them. This solution works in-door environments where GPS will fail or where GPS will give same coordinates for you and your target.
How It Works:
Find target Device:
The system uses UWB technology to determine the precise location of your intended device in the environment using your smartphone.
Coordinate System Conversion:
Once the relative position coordinates are detected by the smartphone, these coordinates undergo a series of transformations. First to global coordinate system (to relate to a larger environment), and then to user coordinate system (to present the information in a way that makes sense to the user of the wearable). This multi-step conversion ensures accuracy and proper display.
Displaying Position on the wearable:
Wearable then displays the position of the target device. The significant advantage here is that the wearable itself does not need its own UWB tag. This bypasses the need for costly UWB hardware on the wearable device, saving on manufacturing costs and power consumption.