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Diesel vehicle gaseous exhaust pollutant remote sensing detection system and method

A detection system and detection method technology are applied to the traffic control system, traffic control system, traffic flow detection and other directions of road vehicles, which can solve the problems affecting the detection accuracy of diesel vehicle emission remote sensing measurement method and the large difference in emission concentration, etc. To achieve the effect of fast detection and improve work efficiency

Active Publication Date: 2020-04-07
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] However, the excess air coefficient in the diesel engine combustion process of a diesel vehicle is always greater than 1 and there is a lot of excess air. Applying the formulas (5), (6), (7) and (8) to calculate the gaseous pollutants in the exhaust gas of diesel vehicles There is a large difference between the concentration and the concentration of emissions in the exhaust pipe, which will greatly affect the detection accuracy of diesel vehicle emission remote sensing measurement methods

Method used

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  • Diesel vehicle gaseous exhaust pollutant remote sensing detection system and method
  • Diesel vehicle gaseous exhaust pollutant remote sensing detection system and method
  • Diesel vehicle gaseous exhaust pollutant remote sensing detection system and method

Examples

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Embodiment 1

[0068] refer to figure 1 As shown, a diesel vehicle gaseous exhaust pollutant remote sensing detection system provided by an embodiment of the present invention includes: a diesel vehicle exhaust emission measurement device, a main control computer, an information display device, a vehicle driving state monitoring device, a weather monitoring device and Vehicle license plate recognition device;

[0069] Diesel vehicle exhaust emission measurement device, information display device, vehicle driving state monitoring device, weather monitoring device and vehicle license plate recognition device are connected to the main control computer through communication, and the main control computer is connected to the motor vehicle emission monitoring platform through the Internet;

[0070] Among them, the vehicle driving state monitoring device is a vehicle speed and acceleration measuring instrument or a radar speed measuring instrument, which is arranged beside the road in the vehicle d...

Embodiment 2

[0076] Based on the diesel vehicle gaseous exhaust pollutant remote sensing detection system that embodiment 1 provides, refer to figure 2 As shown, the present invention also provides a remote sensing detection method for gaseous exhaust pollutants of diesel vehicles, including: S101-S104;

[0077] S101. According to the statistical analysis results of the excess air coefficient of diesel engines during the running of a large number of diesel vehicles, an excess air coefficient map model of diesel vehicles is established;

[0078] S102. According to the excess air coefficient map model, calculate the excess air coefficient of the current driving condition of the diesel vehicle through two-dimensional interpolation;

[0079] S103. Detecting CO, HC, NOx and CO in the diesel vehicle exhaust plume by the diesel vehicle exhaust emission measuring device 2 Concentration ratios Q, Q' and Q" of

[0080] S104. According to the excess air coefficient of the current driving condition...

Embodiment 3

[0110] 1) Diesel engine excess air coefficient model and calculation method during diesel vehicle running

[0111] Based on the statistical analysis results of the excess air coefficient of diesel engines in a large number of driving conditions of diesel vehicles, an excess air coefficient map model with the speed and acceleration of diesel vehicles as parameter variables is established, as shown in Figure 5 As shown, there is an excess air coefficient value at each node where velocity and acceleration are determined.

[0112] The vehicle driving state monitoring device detects the speed and acceleration of the diesel vehicle, and the main control computer uses the speed v and acceleration a of the diesel vehicle as two-dimensional parameters to calculate the excess air coefficient α of the current driving condition of the diesel vehicle through two-dimensional interpolation.

[0113] 2) Remote sensing measurement and calculation method of gaseous emissions concentration in d...

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Abstract

The invention discloses a diesel vehicle gaseous exhaust pollutant remote sensing detection system and method. The system comprises a diesel vehicle exhaust emission measurement device, a main controlcomputer, an information display device, a vehicle driving state monitoring device, a meteorological monitoring device and a vehicle license plate recognition device. The diesel vehicle tail gas emission measuring device, the information display device, the vehicle driving state monitoring device, the weather monitoring device and the vehicle license plate recognition device are in communicationconnection with the main control computer, and the main control computer is connected with the motor vehicle emission monitoring platform through the Internet. The vehicle driving state monitoring device is a vehicle speed and acceleration measuring instrument or a radar tachymeter. Compared with a traditional detection system, the remote measurement technology is adopted, the concentration of gaseous emissions in diesel vehicle tail gas can be measured in real time, and the system is suitable for tail gas emission detection of various motor vehicles provided with diesel engines and has the advantages of being convenient to operate, rapid and efficient.

Description

technical field [0001] The invention relates to the technical field of motor vehicle exhaust detection equipment, in particular to a remote sensing detection system and method for gaseous exhaust pollutants of diesel vehicles. Background technique [0002] Automobile exhaust remote sensing testing technology has been practically applied in some countries and regions in North America, Europe, and Asia. At present, the main applications are concentrated in the following aspects: [0003] (1) Screen high-emission vehicles: Experiments show that when the vehicle operating conditions are known, the remote sensing monitoring system can screen out high-emission vehicles. High-emission vehicles generally only account for 10% of the total number of vehicles, but the pollutants emitted by these 10% vehicles account for more than 60% of all vehicle emissions. It is one of the most effective ways to control vehicle pollutant emissions and improve air quality to screen out high-emission...

Claims

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Application Information

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IPC IPC(8): G01N21/59G01N21/85G01D21/02
CPCG01N21/59G01N21/85G01D21/02G01N2021/8578G01W1/02G08G1/0112G08G1/0116G08G1/0129G08G1/0175G08G1/04Y02A90/10G01N21/3504G01N21/61G08G1/017G08G1/052
Inventor 郝利君邱泰华张伟强谭建伟王欣葛蕴珊
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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