Selective activation of field devices in low power wireless...

Details Selective activation of field devices in low power wireless... Selective activation of field devices in low power wireless...

2011-07-26

2011-07-26

Hu, Jinsong (Department: 2617)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S341000, C455S414100

Reexamination Certificate

active

07986657

ABSTRACT:
A control system uses a wireless network to provided communication between a host computer and field devices. The field devices are normally maintained in a lower power or sleep state. Only field devices that will be involved in a communication with the host computer are turned On and maintained On until communication between the field devices and the host computer is completed.

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