Oak Crest Institute of Science

Air Instruments and Measurements, Inc.

The Syconex Corporation

Air Instruments and Measurement, Inc.

Harry C Lord

Marc Michael Baum

A rugged, miniature, spectroscopic gas analyzer apparatus for rapid, non-invasive, multi-component breath monitoring and analysis and subsequent determination of Q or other medical diagnostic applications. The system is comprised of one or more IR emitters focussed by optical elements through a low volume sample cell receiving a sample input of a patient's breath for analysis. The patient either at rest or during exercise, inhales CH&#x2014;SFmixtures (balance of oxygen and nitrogen) which is subsequently monitored upon exhalation for CO, HO, CH, and SFwhich can be employed to determine Q directly and accurately. Measurements are performed in real-time or via post-processing of stored original data. Due to its small size, ruggedness, and low power consumption, the monitor can conveniently be employed in the field or data can also be retrieved remotely using telemetry. The miniature analyzer operates on the principle of infrared absorption spectroscopy and allows very precise concentration measurements of the analytes of interest, without any bias or interference from other matrix components.

Non-invasive, miniature, breath monitoring apparatus

A rugged, miniature, spectroscopic gas analyzer apparatus for rapid, non-invasive, multi-component breath monitoring and analysis and subsequent determination of Q or other medical diagnostic applications. The system is comprised of one or more IR emitters focussed by optical elements through a low volume sample cell receiving a sample input of a patient's breath for analysis. The patient either at rest or during exercise, inhales C H &mdash;SF mixtures (balance of oxygen and nitrogen) which is subsequently monitored upon exhalation for CO , H O, C H , and SF which can be employed to determine Q directly and accurately. Measurements are performed in real-time or via post-processing of stored original data. Due to its small size, ruggedness, and low power consumption, the monitor can conveniently be employed in the field or data can also be retrieved remotely using telemetry. The miniature analyzer operates on the principle of infrared absorption spectroscopy and allows very precise concentration measurements of the analytes of interest, without any bias or interference from other matrix components.

A spectroscopic IR and UV-vis absorption remote exhaust emission monitoring system and sensing instrument for non-invasive, multicomponent analysis of the exhaust plume emitted by in-use vehicles. The concentration of CO, CO HC, NO, N O, C H , NH , SO , Aromatic hydrocarbons, aldehydes, HONO, NO , and dust, among others and in any combination there-of, in such a mixture can be determined in real-time, or via post-processing of stored spectral data. The sensor employs an IR and a UV-vis sources, and the physically offset, collimated beams traverse the probed air column, typically a roadway, a plurality of times, before returning to the instrument. Although the IR and UV-vis beams converge at the optics opposite the instrument, they are not coaxial and, thus, do not require an optical device (i.e., dichroic beam splitter) to separate them. The separate IR and UV-vis beams are focused on the slits of rapid spectrometers, where they are analyzed to yield wavelength-resolved spectra (i.e., graphs of digital signal intensity versus radiation wavelength). These spectrometers can either be rapid scanning dispersive devices, dispersive devices employing linear or two-dimensional detector arrays, or Fourier transform spectrometers. The graphs are converted into absorbance spectra and are subsequently processed with pattern recognition algorithms and a spectral reference database to afford analyte concentration.

Spectroscopic remote sensing exhaust emission monitoring system

Instrumentation to detect the presence of, or to measure the concentration of, a gas or pollutant in a gaseous environment. With the use of spectroscopic techniques and energy beams having suitable wavelengths, the presence and concentrations of these can be detected and measured, not only in flowing streams such as in process streams or exhaust stacks, but above a ground area, around its perimeter, or across the road. A calibration means including an internal audit cell and a retrodirective reflector is also shown.

Gas detectors and gas analyzers utilizing spectral absorption

A liquid and gas analyzing system that provides a sample collecting probe that delivers the sample through inert materials to prevent any contamination. For gas analyzing for environmental monitoring process control, a sample collecting probe having a borosilicate glass tube liner connected through an inner spiral tube to the analyzer prevents contamination. The system then delivers the sample to a single pass radiated optical cell by a light beam. The light beam is collected by a miniature CCD array spectrometer and delivered to an industrial PC. The output from the industrial PC is then delivered to a software controlled data acquisition system for analysis. The system is constructed to be a modular in design allowing addition of complementary components for measuring and analyzing different materials. The system described can be used for extractive gas analysis as well as extractive liquid analysis for monitoring stack gases, environmental air or general environmental monitoring and with modifications for breath analysis and human saliva and blood testing. The system is also adaptable for long path remote sense gas monitoring of fence lines and for leak detection.

Optical substance analyzer and data processor

Instrumentation to detect the presence of, or to measure the concentration of, a gas or pollutant in a gaseous environment. With the use of gas filter correlation techniques and energy beams having suitable wavelengths, the presence and concentrations of these can be detected and measured, not only in flowing streams such as in exhaust stacks, but above a ground area and around its perimeter. A calibration means using a retrodirective reflector is also shown.

A gas analyzer which utilizes an infrared beam which passes through or has emanated from a gas stream. The analyzer has a plurality of gas cells which contain gas of the type whose concentration is being measured in various concentrations and at various total pressures. A beam of energy is forwarded to the analyzer, and is passed selectively to the various cells. In one embodiment, the cells are mounted where a rotatable deflector can selectively deflect and receive the beam to and from two fixed beam segments so that sequential readings at an infrared detector can provide measurements of concentrations, and calibration. In another embodiment, the cells are selectively moved into the beam path. The beam is formed and forwarded by a Cassegrainean system or by a combination of reflectors including a retro-reflector. An infrared calibration beam which does not pass through the gas stream is utilized for calibration.

Growing community of inventors

Pasadena, CA, United States of America

Harry C Lord