Online dual-mode calibration detection method and equipment for motor vehicle exhaust remote sensing monitoring device

Abstract

The invention relates to an online dual-mode calibration detection method and equipment for a motor vehicle exhaust remote sensing monitoring device, which breaks through the field dynamic calibration technology by establishing a dual-mode metering calibration device combining the dynamic state and the static state of a motor vehicle exhaust remote sensing monitoring system. An electrically-driven vehicle-mounted calibration device with controllable speed and acceleration is used for calibrating a motor vehicle exhaust telemetering system in real time, the change trend of a detection result is analyzed under the series of change conditions of parameters such as a temperature field, a turbulent flow field, an external light field and a signal extraction mode, the uncertainty of dynamic calibration measurement is improved, the method fills the blank of lack of direct measurement standards of domestic motor vehicle tail gas telemetry systems, the problem that the tail gas telemetry systems cannot be dynamically traced under the current working conditions is solved, the accuracy of output data of the motor vehicle tail gas telemetry systems is improved, and a scientific and reasonable magnitude transmission technology is formed through complex flow field experiment research. Requirements of metering traceability and data quality evaluation of a motor vehicle exhaust telemetering system can be fully satisfied.

Description

technical field [0001] The invention belongs to the technical field of motor vehicle exhaust detection technology, and in particular relates to an online dual-mode calibration detection method and equipment for a motor vehicle exhaust remote sensing monitoring device. Background technique [0002] With the development of society, the number of motor vehicles is increasing day by day. China is currently the world's largest motor vehicle sales market, with an annual sales volume of more than 20 million vehicles. Its exhaust emissions have seriously affected all aspects of urban life. Motor vehicle exhaust pollutants have become As one of the important sources of environmental pollution, the monitoring of motor vehicle exhaust emissions has attracted widespread attention. Now the national and local governments have increased the monitoring of motor vehicle exhaust pollutants, and the all-weather online motor vehicle exhaust remote sensing monitoring system designed for urban ar...

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Problems solved by technology

[0012] In view of the above situation, in order to overcome the defects of the existing technology, the purpose of the present invention is to provide an online dual-mode calibration detection method and equipment for the remote sensing monitoring system of motor vehicle exhaust gas in the process of dynamic tail gas monitoring. Existing bias, difficult to calibrate issues

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