Apparatus for remote analysis of vehicle emissions

Details Apparatus for remote analysis of vehicle emissions Apparatus for remote analysis of vehicle emissions

1995-04-21

1996-03-12

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

25033913, 356438, G01N 2100, G01N 2117

Patent

active

054988721

ABSTRACT:
A gas analysis device for the remote detecting, measuring and recording of NO, CO, CO.sub.2, HC, and H.sub.2 O levels from the exhaust (30) of moving motor vehicles (28) utilizes a source (11) of collimated infrared and ultraviolet radiation (15) and includes a detector unit (16) positioned on the opposite side of the roadway for receiving and measuring the infrared and ultraviolet radiation from the source (11) tranmitted through the vehicle exhaust. The detector unit splits the combined infrared and ultraviolet radiation into separate infrared and ultraviolet beams (42) and (40). The ultraviolet beam is diffracted onto a photodiode array in a spectrometer that generates a signal indicative of NO in the vehicle exhaust. A rotating reflector (27) time-multiplexes the infrared beam to a plurality of infrared sensors that generate electrical signals indicative of, for example, CO, CO.sub.2, HC, and H.sub.2 O in the vehicle exhaust. A computer (17) then computes the relative concentrations of CO, CO.sub.2, HC, NO, and H.sub.2 O in the path of the infrared and ultraviolet radiation from the source, thereby measuring vehicle emissions.

REFERENCES:
patent: 2930893 (1960-03-01), Carpenter et al.
patent: 3171027 (1965-02-01), Wallack
patent: 3287556 (1966-11-01), Good
patent: 3364351 (1968-01-01), Palmer et al.
patent: 3696247 (1972-10-01), McIntosh et al.
patent: 3958122 (1976-05-01), Jowett et al.
patent: 3973848 (1976-08-01), Jowett et al.
patent: 4126396 (1978-11-01), Hartmann et al.
patent: 4160373 (1979-07-01), Fastaia et al.
patent: 4348732 (1982-09-01), Kreft
patent: 4390785 (1983-06-01), Faulhaber et al.
patent: 4490845 (1984-12-01), Steinbruegge et al.
patent: 4632563 (1986-12-01), Lord, III
patent: 4678914 (1987-07-01), Melrose et al.
patent: 4746218 (1988-05-01), Lord, III
patent: 4755678 (1988-07-01), Izatt et al.
patent: 4795253 (1989-01-01), Sandridge et al.
patent: 4818705 (1989-04-01), Schneider et al.
patent: 4924095 (1990-05-01), Swanson, Jr.
patent: 4963023 (1990-10-01), Goldovsky et al.
patent: 4999498 (1991-03-01), Hunt et al.
patent: 5002391 (1991-03-01), Wolfrum et al.
patent: 5041723 (1991-08-01), Ishida et al.
patent: 5061854 (1991-10-01), Kroutil et al.
patent: 5076699 (1991-12-01), Ryan et al.
patent: 5210702 (1993-05-01), Bishop et al.
patent: 5319199 (1994-06-01), Stedman et al.
patent: 5401967 (1995-03-01), Stedman et al.
Bishop, Gary A., et al., "IR Long-Path Photometry: A Remote Sensing Tool for Automobile Emissions," Am. Chem. Soc., 1989, pp. 671A-676A.
Chaney, Lucian W., "The Remote Measurement of Traffic Generated Carbon Monoxide," J. Air Pollut. Control Assoc., Mar. 1983, pp. 220-222.
Stedman, Donald H., "Automobile Carbon Monoxide Emission," Environ. Sci. Technol., 1989, pp. 147-149.
Peterson et al., "Find and Fix the Polluters", Chemtech, Jan. 1992, pp. 47-53.

Affiliated with

Also associated with

Rating

Apparatus for remote analysis of vehicle emissions does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for remote analysis of vehicle emissions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for remote analysis of vehicle emissions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2102285