System and method for remote sensing measurement of automobile emissions

A technology of automobile emission and detection system, applied in the direction of color/spectral characteristic measurement, etc., can solve problems such as measurement error of exhaust gas component concentration

Active Publication Date: 2011-07-06
MUTUAL SKY TECH
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a remote sensing detection system and method for automobile emissions in view of defects such as measurement errors in the prior art remote sensing detection of tail gas component concentrations of automobile emissions

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  • System and method for remote sensing measurement of automobile emissions
  • System and method for remote sensing measurement of automobile emissions
  • System and method for remote sensing measurement of automobile emissions

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Embodiment Construction

[0039] Symbol representation: %CO 2 means CO 2 The percent concentration of CO, %CO represents the percent concentration of CO.

[0040] In the technical scheme of the present invention, remote sensing technology utilizes CO 2 and other exhaust components (CO, HC and NO X ) in the exhaust gas distribution and dilution are similar and proportional, according to this concept, other exhaust components and CO 2 The proportional value of the signal reading multiplied by the CO in the exhaust plume 2 The percentage concentration of other tail gas components (CO, HC and NO) in the tail gas can be obtained X )concentration. Wherein, the unit of the concentration reading is percent concentration (%) or percent concentration (ppm). The remote sensor measures the exhaust gas and generates a signal reading ratio: CO / CO 2 、HC / CO 2 , and NO X / CO 2 , in order to obtain CO 2 , CO, HC and NO X Concentration value, need to convert the ratio of the above signal readings into % or pp...

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Abstract

The invention relates to a system and a method for the remote sensing measurement of automobile emissions. The system comprises a radiation source, a radiation detection unit and a processing unit, wherein the processing unit comprises: a module for calculating percent concentration of CO2 according to %CO2 = c x (%CO/%CO2)2 + d x (%CO/%CO2) + e; and a module for respectively calculating the percent concentration of each component in tail gas according to the percent concentration of CO2. Implementing the system and the method for the remote sensing measurement of automobile emissions has no need of solving stoichiometric combustion equation to calculate the concentration of CO2; assumption for the content of hydrogen and carbon in fuel or tail gas is not required; signal readings measured by a detector are used for generating correct concentration of CO2; in the process of measurement, assumption for the stoichiometric operation (e.g. under the optimal air/fuel ratio) of vehicle is not required; and during real-time remote sensing measurement, the concentration of CO2 is calculated for every vehicle according to tail gas plume.

Description

technical field [0001] The invention relates to a remote sensing detection system and method, more specifically, to a remote sensing detection system and method for vehicle emissions. Background technique [0002] There are some calculation CO in the prior art 2 The method of percentage concentration, such as the method disclosed in US Patent No. 5,498,872 by Stedman et al., and the method disclosed in US Patent No. 5,831,267 by Jack et al. Their methods are similar in that they are both based on the stoichiometric combustion equation and maintaining the atomic balance of the elements. Their assumption of stoichiometric combustion was flawed because the calculations would be wrong when the vehicle was not operating under stoichiometric conditions. [0003] Both Stedman et al. and Jack et al. assumed that CO in exhaust gas 2 The percent concentration is known and constant, in their method %CO 2 Obtained by solving the stoichiometric combustion equation. Stedman assumed a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25
Inventor 陆伟明
Owner MUTUAL SKY TECH
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