US 12,092,722 B2
Method, system and computer program product for determining a position relative to a confined space
Nico Janssens, Putte (BE)
Assigned to ROMBIT NV, Antwerp (BE)
Appl. No. 17/440,112
Filed by ROMBIT NV, Antwerp (BE)
PCT Filed Mar. 20, 2020, PCT No. PCT/IB2020/052603
§ 371(c)(1), (2) Date Sep. 16, 2021,
PCT Pub. No. WO2020/188538, PCT Pub. Date Sep. 24, 2020.
Claims priority of application No. 2019/5174 (BE), filed on Mar. 21, 2019.
Prior Publication US 2022/0196822 A1, Jun. 23, 2022
Int. Cl. G01S 13/46 (2006.01); G01S 5/00 (2006.01); G01S 13/02 (2006.01); G08B 21/18 (2006.01)
CPC G01S 13/46 (2013.01) [G01S 5/012 (2020.05); G01S 5/015 (2020.05); G01S 13/0209 (2013.01); G08B 21/18 (2013.01); G01S 2013/466 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for determining a position of a person relative to a confined space, the method comprising the steps of:
providing an ultra-wideband (UWB) item associated with the person;
providing one or more UWB anchors on the confined space;
repeatedly determining a distance of the UWB item relative to the one or more UWB anchors;
wherein the method comprises the steps of:
determining a variability based on the repeatedly determined distances;
determining whether the UWB item is in the confined space, by comparing said variability with a predetermined variability limit value.