US 12,219,352 B2
Method of wireless monitoring system connection to distributed control system
Ibrahim S. Al Rashed, Dhahran (SA)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Nov. 29, 2022, as Appl. No. 18/059,898.
Prior Publication US 2024/0179518 A1, May 30, 2024
Int. Cl. H04W 12/06 (2021.01); G06F 13/42 (2006.01); H04L 9/40 (2022.01); H04W 4/38 (2018.01); H04W 12/08 (2021.01); H04W 84/18 (2009.01)
CPC H04W 12/06 (2013.01) [G06F 13/4282 (2013.01); H04L 63/101 (2013.01); H04W 4/38 (2018.02); H04W 12/08 (2013.01); G06F 2213/40 (2013.01); H04W 84/18 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for monitoring point-of-safety stations in a process plant, comprising:
disposing a wireless gateway device on a roof top of the process plant above a control room of a distributed control system (DCS) in the process plant;
disposing a plurality of wireless field devices on the roof top to form a wireless mesh network;
communicatively connecting the wireless gateway device to wired DCS equipment in the control room;
communicatively connecting, using at least the wireless mesh network, the wireless gateway device to each of the point-of-safety stations;
wirelessly transmitting, via the wireless mesh network, a status signal from each of the point-of-safety stations to the wired DCS equipment; and
performing, in response to the wired DCS equipment receiving the status signal, a corrective action to enhance safety of the process plant, and
wherein communicatively connecting the wireless gateway device to each of the point-of-safety stations is further using a 2-pair cable to connect a discrete transmitter of the plurality of wireless field devices to a station controller of a corresponding point-of-safety station, and
wherein the discrete transmitter is disposed on the roof top above the corresponding point-of-safety station.