发明授权
US07453834B2 Distributed control system for controlling material flow having wireless transceiver connected to industrial process control field device to provide redundant wireless access 失效
用于控制物料流的分布式控制系统,具有连接到工业过程控制现场设备的无线收发器以提供冗余无线接入

Distributed control system for controlling material flow having wireless transceiver connected to industrial process control field device to provide redundant wireless access
摘要:
A wireless bridge device disposed within a process control system provides wireless communication between multiple devices within the process control system, such as between field devices, control units, user terminals, controllers, etc. In one embodiment, a process control system disposed within an industrial process environment includes a first process control device, a bridge device, a plurality of field devices disposed within the industrial process environment and a hardwired communication link disposed between the bridge device and each of the plurality of field devices. A wireless communication network including a first wireless transceiver located at the first process control device and a second wireless transceiver disposed at the bridge device enables the bridge device to operate to relay signals sent over the hardwired communication link from any of the plurality of field devices to the first process control device using the wireless communication network and to operate to relay signals sent over the wireless communication network from the first process control device to one or more of the plurality of field devices using the hardwired communication link.
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