| 摘要 |
<p>A gas analysis device (10) for the remote detecting, measuring and recording of NOx, CO, CO2, HC and H2O levels from the exhaust (30) of moving motor vehicles (28). It utilizes a source (11) of collimated infrared and ultraviolet radiation (15) and includes a mechanism (16) positioned on the opposite side of the roadway for receiving and measuring the infrared and ultraviolet radiation from the source (11) transmitted through the vehicle exhaust. The receiving mechanism splits the combined infrared and ultraviolet radiation into separate infrared and ultraviolet beams (42) and (40). A mechanism (44) receives the separate ultraviolet beam and generates a signal indicative of NOx. Another mechanism (27) splits the infrared beam into two to four components, and devices (35) are positioned for receiving each of the infrared components and generating two to four signals indicative of, for example, CO, CO2, HC and H2O. Another associated mechanism (17) then computes and produces signals indicative of the amount of CO, CO2, HC, NOx and H2O in the path of the infrared and ultraviolet radiation from the source, thereby making it capable of measuring emissions of vehicles.</p> |
