| 摘要 |
A subsea electronic module (SEM) for an underwater fluid extraction well has a first internal local area network (LAN) and a second internal LAN. The LANs are segregated and provide a redundant communication capability. A switch 4 routes external traffic to the first and second LANs. The LANs interconnect electronic cards such as single board computers (SBC) 10 which are disturbed across a plurality of bays. Within each bay, the cards are coupled to both a first Ethernet switch 6 of a first LAN and a second Ethernet switch of a second LAN. The first and second Ethernet switches of a first bay are coupled to the first and second Ethernet switches respectively of a second bay. The couplings may be capacitive 9. |
