Single transmission line data acquisition system

Patent · Sun Jan 01 00:00:00 EST 1984

OSTI ID:865025

Fasching, George E ^[1]

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1. Morgantown, WV

A single transmission line interrogated multiple channel data acquisition system is provided in which a plurality of remote station/sensors monitor specific process variables and transmit measurement values over the single transmission line to a master station when addressed by the master station. Power for all remote stations (up to 980) is provided by driving the line with constant voltage supplied from the master station and automatically maintained independent of the number of remote stations directly connected to the line. The transmission line can be an RG-62 coaxial cable with lengths up to about 10,000 feet with branches up to 500 feet. The remote stations can be attached randomly along the line. The remote stations can be scanned at rates up to 980 channels/second.

• Research Organization: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4451826
• OSTI ID: 865025
• Country of Publication: United States
• Language: English

Related Subjects

single
transmission
line
data
acquisition
interrogated
multiple
channel
provided
plurality
remote
station
sensors
monitor
specific
process
variables
transmit
measurement
values
master
addressed
power
stations
980
driving
constant
voltage
supplied
automatically
maintained
independent
directly
connected
rg-62
coaxial
cable
lengths
10
000
feet
branches
500
attached
randomly
scanned
rates
channels
single transmission
remote station
multiple channel
data acquisition
transmission line
coaxial cable
process variable
constant voltage
directly connected
channel data
voltage supplied
sensors monitor
specific process
measurement values
line interrogated
interrogated multiple
process variables
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