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Laser spectrum control system and method, equipment and readable storage medium

A technology of a control system and a control method, which is applied in the field of laser spectrum control system, can solve the problem of motor vehicle exhaust gas detection being susceptible to dust and window pollution, etc., and achieves the effects of high test reliability, high test accuracy, and elimination of cross-interference effects.

Inactive Publication Date: 2020-05-08
湖南轩源环保科技有限公司
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  • Application Information

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Problems solved by technology

[0005] The present invention provides a laser spectrum control system, method, equipment and readable storage medium, aiming to solve the technical problem that motor vehicle exhaust detection is easily affected by dust and window pollution in the existing remote sensing detection method of motor vehicle pollutant emission

Method used

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  • Laser spectrum control system and method, equipment and readable storage medium
  • Laser spectrum control system and method, equipment and readable storage medium
  • Laser spectrum control system and method, equipment and readable storage medium

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Embodiment Construction

[0034] specific implementation plan

[0035] In order to better understand the above-mentioned technical solution, the above-mentioned technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] Such as figure 1 as shown, figure 1It is a functional block diagram of the first embodiment of the laser spectrum control system of the present invention. The motor vehicle exhaust laser spectrum control system provided by the present invention includes a wavelength scanning signal generator 101, a modulation signal generator 102, an adding circuit 103, a laser current source 104, Temperature control circuit 105, semiconductor laser 106, photodetector 107, frequency multiplication circuit 108, phase-lock circuit 109, signal processing module 110 and control device 111, the input terminal of adding circuit 103 is connected with wavelength scanning signal generator 101 and modulating signal respectively...

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Abstract

The invention discloses a laser spectrum control system and method, equipment and a readable storage medium. The system comprises a wavelength scanning signal generator, a modulation signal generator,an adder circuit, a laser current source, a temperature control circuit, a semiconductor laser, a photoelectric detector, a frequency multiplier circuit, a phase lock circuit, a signal processing module and a control device. The control device is used for controlling the wavelength scanning signal generator and the modulation signal generator, and periodically modulating the output current of thelaser current source, so that the wavelength of the laser emitted by the semiconductor laser is periodically changed in a set range; and the control module is also used for controlling the signal processing module to obtain single-line absorption spectral line data of each monitoring factor and spectral line data of each interference factor in the tail gas of the measured motor vehicle in each period. According to the laser spectrum control system and method, the equipment, and the readable storage medium, the test precision is high, and the test reliability is high.

Description

technical field [0001] The invention relates to the field of motor vehicle tail gas treatment, and in particular discloses a laser spectrum control system, method, device and readable storage medium. Background technique [0002] In recent years, with the rapid economic development and the continuous advancement of urban modernization, the number of motor vehicles has increased dramatically. The rapid increase of motor vehicles has also increased environmental pollution while bringing convenience to the people. According to reports, with the rapid increase in the number of motor vehicles, the air in some cities in my country has begun to show the characteristics of combined pollution from soot and motor vehicle exhaust, which directly affects the health of the people. In recent years, the air quality in the Beijing-Tianjin-Hebei region has generally improved, but the average concentration of nitrogen dioxide has dropped far less than other pollutants. During heavy pollutio...

Claims

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Application Information

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IPC IPC(8): G01N21/39G01N21/01
CPCG01N21/39G01N21/01G01N2021/0112G01N2021/0168
Inventor 文红山
Owner 湖南轩源环保科技有限公司
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