Millimeter wave sensor for monitoring effluents

Patent · Sun Jan 01 00:00:00 EST 1995

OSTI ID:870169

Gopalsami, Nachappa ^[1]; Bakhtiari, Sasan ^[2]; Raptis, Apostolos C ^[3]; Dieckman, Stephen L ^[3]

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1. Naperville, IL
2. Bolingbrook, IL
3. Downers Grove, IL

A millimeter-wave sensor for detecting and measuring effluents from processing plants either remotely or on-site includes a high frequency signal source for transmitting frequency-modulated continuous waves in the millimeter or submillimeter range with a wide sweep capability and a computer-controlled detector for detecting a plurality of species of effluents on a real time basis. A high resolution spectrum of an effluent, or effluents, is generated by a deconvolution of the measured spectra resulting in a narrowing of the line widths by 2 or 3 orders of magnitude as compared with the pressure broadened spectra detected at atmospheric pressure for improved spectral specificity and measurement sensitivity. The sensor is particularly adapted for remote monitoring such as where access is limited or sensor cost restricts multiple sensors as well as for large area monitoring under nearly all weather conditions.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• Assignee: University of Chicago (Chicago, IL)
• Patent Number(s): US 5468964
• OSTI ID: 870169
• Country of Publication: United States
• Language: English

Related Subjects

millimeter
wave
sensor
monitoring
effluents
millimeter-wave
detecting
measuring
processing
plants
remotely
on-site
frequency
signal
source
transmitting
frequency-modulated
continuous
waves
submillimeter
range
wide
sweep
capability
computer-controlled
detector
plurality
species
time
basis
resolution
spectrum
effluent
generated
deconvolution
measured
spectra
resulting
narrowing
line
widths
magnitude
compared
pressure
broadened
detected
atmospheric
improved
spectral
specificity
measurement
sensitivity
particularly
adapted
remote
access
limited
cost
restricts
multiple
sensors
nearly
weather
conditions
multiple sensors
continuous wave
particularly adapted
atmospheric pressure
signal source
frequency signal
remote monitor
millimeter wave
processing plant
line width
line widths
wave sensor
time basis
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