“Tail gas telemetry, qualifiedâ€, as the vehicle passed normally, the yellow and green fonts jumped on the black screen, and the white remote sensing car, the staff was recording the data. Li Yannan, deputy director of the Municipal Motor Vehicle Emission Management Center, said that Beijing will strengthen the remediation of motor vehicle pollution, increase the number of remote sensing vehicles, and install 150 sets of fixed remote sensing monitoring equipment in important sections of the city.
The use of laser remote sensing monitoring technology to detect vehicle emissions refers to the use of part of the light infrared and ultraviolet light emitted by remote sensing equipment to illuminate the vehicle exhaust, and analyze the absorption spectra of different substances in the exhaust gas to detect carbon monoxide (CO) and carbon dioxide (CO2). ), the concentration of hydrocarbon (HC), nitrogen oxides (NOX).
At present, the number of motor vehicles in Beijing has reached more than 5.5 million. The carbon monoxide, hydrocarbons and nitrogen oxides emitted by motor vehicles account for 86%, 32% and 56% of the total air pollution respectively. Among PM2.5 sources, motor vehicle emissions accounted for 31.1% of local sources.
Li Yannan introduced that the remote sensing vehicle can detect the dynamic emission of the motor vehicle in real time without affecting the normal running of the motor vehicle. It has a fast detection speed (0.7 seconds to detect a vehicle), high efficiency, wide monitoring range and manpower saving. Features have been adopted in many developed countries and regions.
“Remote sensing monitoring has filled the regulatory gap for motor vehicles on the road,†Li said. He pointed out that remote sensing vehicles are an important way of law enforcement, adding new means to Beijing's motor vehicle emissions regulation and increasing the scientific and technological content of law enforcement inspections.
He introduced that the data will automatically enter the database. For vehicles that have exceeded the standard, they will notify the owner of the repair by sending a text message or a written letter, and the fine will be 300 yuan. He said that through the analysis of a large number of monitoring data, the evaluation of the exhaust gas detection work of the motor vehicle annual inspection site can strengthen the management of the vehicle detection field in a targeted manner. It can also screen out the types of vehicles with higher emission levels and strengthen the vehicle. Governance.
He introduced that at present, the environmental protection departments of all districts and counties in Beijing actively coordinate the traffic control departments to carry out law enforcement inspections at 85 remote sensing monitoring points in the city. The Municipal Environmental Protection Bureau purchased 19 laser remote sensing inspection vehicles and distributed them to all districts and counties in the city and Yizhuang Economic Development Zone. The country took the lead in implementing large-scale dynamic monitoring of vehicle exhaust emissions on the road.
In the first nine months of 2014, Beijing's remote sensing monitoring was 5.97 million vehicles, and 4168 vehicles were over-punched.
"The scope of application will continue to expand," Li said. He said that on the basis of giving full play to the flexible characteristics of the existing mobile remote sensing monitoring vehicles, Beijing will supplement 20 monitoring vehicles equipped with new integrated diesel and diesel telemetry equipment, and install 150 sets of fixed remote sensing monitoring equipment on important sections of the city. Establish a citywide remote sensing monitoring network information platform.
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