US 12,436,264 B2
Method, system and computer program product for blind spot detection
Nico Janssens, Putte (BE); and Brett Daman, Muizen (BE)
Assigned to ROMBIT NV, Antwerp (BE)
Appl. No. 17/996,415
Filed by ROMBIT NV, Antwerp (BE)
PCT Filed Apr. 20, 2021, PCT No. PCT/IB2021/053237
§ 371(c)(1), (2) Date Oct. 17, 2022,
PCT Pub. No. WO2021/214647, PCT Pub. Date Oct. 28, 2021.
Claims priority of application No. 2020/5259 (BE), filed on Apr. 20, 2020.
Prior Publication US 2023/0194695 A1, Jun. 22, 2023
Int. Cl. G01S 13/76 (2006.01); G01S 3/50 (2006.01); H04W 4/021 (2018.01)
CPC G01S 13/76 (2013.01) [G01S 3/50 (2013.01); H04W 4/022 (2013.01)] 16 Claims
OG exemplary drawing
 
1. Method for determining a position of a person with respect to a blind spot of a vehicle, comprising the steps of:
providing an ultra-wideband (UWB) item associated with the person;
providing two or more UWB anchors on the vehicle; and
determining a geofence along a perimeter of the blind spot of the vehicle;
selecting a reference anchor from the two or more UWB anchors;
determining a distance between the UWB item and the reference anchor based on a Two-Way Ranging (TWR) technique;
determining a direction between the UWB item and two or more of the UWB anchors based on a Time Difference of Arrival (TDoA) technique;
determining a position of the UWB item with respect to the two or more UWB anchors based on the determined distance and the determined direction; and
determining whether the UWB item is in the blind spot of the vehicle by comparing the determined position of the UWB item to the determined geofence.