US 12,437,626 B2
IoT-based local monitoring workplace safety management system and workplace safety management method using same
Jiyong Yu, Seoul (KR); Seonkyung Chu, Bucheon-si (KR); Taeha Park, Seoul (KR); Kwangku Do, Yongin-si (KR); Mungi Kang, Goyang-si (KR); Dongkeun Kim, Osan-si (KR); Inhyuck Choi, Seoul (KR); Euntack Lee, Seoul (KR); and Soonjin Hong, Seoul (KR)
Assigned to SAMSUNG C&T CORPORATION, Seoul (KR)
Appl. No. 18/251,690
Filed by SAMSUNG C&T CORPORATION, Seoul (KR)
PCT Filed Oct. 25, 2021, PCT No. PCT/KR2021/015030
§ 371(c)(1), (2) Date May 3, 2023,
PCT Pub. No. WO2022/097978, PCT Pub. Date May 12, 2022.
Claims priority of application No. 10-2020-0146149 (KR), filed on Nov. 4, 2020.
Prior Publication US 2023/0410628 A1, Dec. 21, 2023
Int. Cl. G08B 21/12 (2006.01); H04W 4/38 (2018.01); H04W 84/18 (2009.01)
CPC G08B 21/12 (2013.01) [H04W 4/38 (2018.02); H04W 84/18 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A workplace safety management system comprising:
a plurality of node units (100) installed in a workplace area (1);
a mobile local server (200) that is movable and is connected to a management server (10) by wireless communication; and
a tag (300) attached to a worker,
wherein the plurality of node units (100) and the mobile local server (200) are connected through a network system (400),
the network system (400) includes
a long-range network (410) connecting the plurality of node units (100) to the mobile local server (200), and
a mesh network (420) connecting the plurality of node units to each other, and
the mesh network (420) connects the plurality of node units (100) to the mobile local server (200),
wherein the long-range network (410) connects only one of the plurality of node units (100) to the mobile local server (200) while being located within a predetermined distance (a) from the mobile local server (200), and
wherein the only one of the plurality of node units (100) adjacent to the mobile local server (200) is configured to use the long-range network (410), and
wherein the workplace safety management system is configured to maintain the long-range network (410) of any other plurality of node units (100) in an inactive state and is configured to exchange information between the any other plurality of node units (100) through the mesh network (420).