Remote sensing monitoring device and method for motor vehicle exhaust differential absorption filter imaging

Abstract

The invention discloses a differential absorption and filter imaging remote sensing monitoring device for motor vehicle exhaust gas. The device comprises a motor vehicle information acquisition unit and further comprises an imaging remote sensing monitoring unit and a signal processing unit; and the imaging remote sensing monitoring unit comprises an imaging lens, light penetrating through the imaging lens is divided into reflection light and transmission light by a spectroscope, the reflection light sequentially passes through a first molecule bubble and a first light filter and then is imaged by a first imaging detector, and the transmission light sequentially passes through a second molecule bubble and a second light filter and then is imaged by a second imaging detector. The inventionfurther discloses a differential absorption and filter imaging remote sensing monitoring method for the motor vehicle exhaust gas. The device and method have the advantages of being high in monitoringaccuracy, low in data discretization degree, high in jamming and suppression resistance, environment adaptability and monitoring sensitivity, good in result visuality and the like.

Description

technical field [0001] The invention relates to the field of motor vehicle exhaust monitoring, in particular to a remote sensing monitoring device for motor vehicle exhaust differential absorption filter imaging, and also relates to a remote sensing monitoring method for motor vehicle exhaust differential absorption filter imaging. Background technique [0002] With the development of transportation technology and demand, the proportion of motor vehicle exhaust emissions to air pollution is increasing day by day. Real-time and working condition detection brings great difficulty and is a technical bottleneck in the construction of the supervision system. [0003] A lot of technical explorations have been carried out at home and abroad. At present, the detection of vehicle exhaust emissions in various places generally adopts the simple working condition sampling detection method, that is, the exhaust emissions of motor vehicles are sampled under the designated detection places...

AI Technical Summary

Problems solved by technology

[0006] Document 6 (Development of an imaging gas correlation spectrometry based mid-infrared camera for two-dimensional mapping of CO in vehicle exhausts, OPTICS EXPRESS, Vol.26, No.7, 2018, 8239-8251) proposes a gas correlation detection method , this method uses two infrared imaging monitoring methods. On the one hand, it is difficult for the optical paths of the two imaging systems to be consistent. The difference between the interference information and the exhaust information is large, and it is difficult for the two images to overlap during inversion. Such a small image deviation will cause a large inversion error to the exhaust detection.

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