Boots – shoes – and leggings
Patent
1990-12-26
1993-05-11
Lall, Parshotam S.
Boots, shoes, and leggings
2503385, 250339, 250372, 364497, G01N 2100
Patent
active
052107027
ABSTRACT:
A gas analysis device for the remote detecting, measuring and recording of NO.sub.x, CO, CO.sub.2, HC and H.sub.2 O levels from the exhaust of moving motor vehicles. It utilizes a source of collimated infrared and ultraviolet radiation and includes a mechanism for receiving and measuring the infrared and ultraviolet radiation from its source, and another mechanism for measuring background infrared and ultraviolet radiation levels in the ambient atmosphere. The receiving mechanism splits the combined infrared and ultraviolet radiation into separate infrared and ultraviolet beams. A mechanism receives the separate ultraviolet beam and generates a signal indicative of NO.sub.x. Another mechanism splits the infrared beam into two to four components, and devices are positioned for receiving each of the infrared components and generating two to four signals indicative of, for example, CO, CO.sub.2, HC and H.sub.2 O. Another associated mechanism then computes and produces signals indicative of the amount of CO, CO.sub.2, HC, NO.sub.x and H.sub.2 O in the path of the infrared and ultraviolet radiation from the source, thereby making it capable of measuring emissions of vehicles. The source and the receiving mechanism are aligned on opposite sides of a roadway, both being at the elevation of the to-be-measured vehicle exhaust. Vehicles traveling on that roadway and passing through the radiation emanating from the source interrupt reception of the beam by the detector, thereby initiating a detection sequence. In one embodiment a visual recording device is positioned for visually recording the vehicle and test results.
REFERENCES:
patent: 4924095 (1990-05-01), Swanson, Jr.
Bishop; Gary A., "IR Long-Path Photometry: A Remote Sensing Tool for Automobile Emission", 1989, American Chemical Society.
Chaney; Lucian W., "The Remote Measurement of Traffic Generated Carbon Monoxide", Mar., 1983, Journal of the Air Pollution Control Association, pp. 220-222.
Stedman; Donald, "Automobile carbon monoxide emission" 1989, Environmental Science & Technology, pp. 147-149.
Bishop Gary
Stedman Donald H.
Colorado Seminary
Cosimano Edward R.
Lall Parshotam S.
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