Vehicle tail gas multi-polluting component real-time remote measuring method and device

A telemetry device and exhaust technology, applied in the fields of environmental science and spectroscopy, can solve problems such as the inability to provide real-time changes in vehicle exhaust emissions, and the difficulty of real-time online monitoring.
CN106168577AInactive Publication Date: 2016-11-30桐城市宇洁机动车尾气检测有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
桐城市宇洁机动车尾气检测有限公司
Publication Date
2016-11-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a vehicle tail gas multi-polluting component real-time remote measuring method and device, and belongs to the field of environmental sciences and optical spectroscopy. Vehicle tail gas accounts for 80% of urban pollution resources, and a usual monitoring method is a two-speed idle discharge method or a simple condition method, so that real-time site multi-component monitoring cannot be achieved. According to the device, an infrared tuning diode laser spectrum and an ultraviolet difference absorption spectrum are jointly used, and difference absorption, narrow pulse width scanning and second harmonic detection of an infrared tuning diode laser are used. An ultraviolet difference absorption method adopts spectrum technology of a holographic grating light splitting spectrometer and an array detector, various pollutants such as CO, CO2, HO, HC and smoke dust are detected in real time in a multispectral mode, and the device has high sensitivity at a PPM (parts per million) level, high resolution and dynamic effect detection capacity.
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Description

Technical field

[0001] The invention belongs to the field of environmental science and spectroscopy, and specifically relates to a method and device for real-time remote sensing of multiple pollutant components of vehicle exhaust. Background technique

[0002] A large amount of harmful exhaust gas emitted by vehicles burning gasoline or diesel is the main mobile pollution source that pollutes the environment. Studies have shown that pollution caused by vehicle exhaust accounts for 80% of the entire city's air pollution. The usual monitoring method of automobile exhaust is to analyze it with conventional instruments after sampling, which cannot fully reflect the true emission of automobile exhaust pollutants. There are two main methods:

[0003] 1. Dual-idling emission method: refers to the method of pollutant emission measurement at two idling speeds. One of the two idling speeds is ordinary idling speed, which is the idling speed specified in the vehicle manual; the other is High ...

Claims

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