08538560 is referenced by 11 patents and cites 330 patents.

A wireless power and communication unit for field devices is configured to connect to a field device and provide operating power and wired digital communication between the unit and the field device. RF circuitry in the unit is configured for radio frequency communication. In one embodiment, power supply circuitry in the unit includes one or more solar power cells that convert solar energy into electricity to power both the unit and the field device. The unit interacts with the field device in accordance with a standard industry communication protocol. The unit communicates wirelessly with an external device, such as a control room, based upon the interaction with the field device.

Title
Wireless power and communication unit for process field devices
Application Number
10/850828
Publication Number
8538560 (B2)
Application Date
May 21, 2004
Publication Date
September 17, 2013
Inventor
Mark Fandrey
Eden Prairie
MN, US
Richard Nelson
Chanhassen
MN, US
Robert Karschnia
Chaska
MN, US
Philip Ostby
Cologne
MN, US
George Hausler
Maple Grove
MN, US
Gregory Brown
Chanhassen
MN, US
Agent
Westman Champlin & Kelly P A
Assignee
Rosemount
MN, US
IPC
G06F 1/26
H04B 1/38
H04B 1/16
H04B 17/00
G05B 15/00
G05B 11/01
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