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Motor vehicle tail gas remote detection device and system

A technology for telemetry equipment and motor vehicles, which is applied in the measurement of color/spectral characteristics, etc., and can solve the problems of low vehicle capture efficiency and poor measurement accuracy.

Pending Publication Date: 2018-08-03
华电智控(北京)技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a vehicle exhaust remote measurement device and system to alleviate the problems of low vehicle capture efficiency and poor measurement accuracy in the prior art motor vehicle exhaust remote measurement

Method used

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  • Motor vehicle tail gas remote detection device and system
  • Motor vehicle tail gas remote detection device and system
  • Motor vehicle tail gas remote detection device and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] An embodiment of the present invention provides a motor vehicle exhaust remote measurement device, which is applied in the field of motor vehicle exhaust detection.

[0054] like Figure 1 to Figure 3 As shown, the motor vehicle exhaust remote measurement equipment includes: a motor vehicle exhaust detection module 1, a modulation and demodulation module 2 and a data acquisition card 3, the above-mentioned motor vehicle exhaust detection module is connected with the above-mentioned modulation and demodulation module, and the above-mentioned modulation and demodulation module is connected with the The above data acquisition card is connected.

[0055] The motor vehicle exhaust detection module is used to detect the concentration of each gas in the motor vehicle exhaust to obtain detection signals.

[0056] The modulation and demodulation module is used to modulate and demodulate the detection signal to generate a demodulated signal.

[0057] The above-mentioned data ac...

Embodiment 2

[0107] like Figure 5 As shown, the embodiment of the present invention provides another motor vehicle exhaust remote measurement device. The difference from the first embodiment is that the transceiver integrated end in this embodiment also includes: a light source beam combining device 16, a light source beam splitting device 17 and a first Three reflectors 18 .

[0108] The light source beam combining device is arranged in the light emitting direction of the detection light source, and the light source beam combining device is used to combine the detection lights emitted by the multiple detection light sources to generate composite light.

[0109] The light source beam splitting device is arranged in the light incoming direction of the optical path filtering and focusing device, and the light source beam splitting device is used to split the composite light and then enter the optical path filtering and focusing device.

[0110] The third reflecting device is arranged in th...

Embodiment 3

[0136] like Figure 8 and Figure 9 As shown, the embodiment of the present invention also provides a motor vehicle exhaust remote measurement system, the system includes: a host computer 100 and the motor vehicle exhaust remote measurement device 200 mentioned in the foregoing embodiment, the above-mentioned host computer and the above-mentioned motor vehicle exhaust remote measurement device connect.

[0137] Specifically, the above-mentioned upper computer is connected with the data acquisition card of the vehicle exhaust telemetry equipment.

[0138] The upper computer is used as the control system, such as the host computer (computer).

[0139] The upper computer here includes a control terminal or a control center platform.

[0140] It should be noted that the laser controller, the modulation signal unit, the demodulation unit, etc. are all controlled by the host computer, and finally the concentration of the gas to be measured is calculated in combination with the pr...

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Abstract

The invention provides a motor vehicle tail gas remote detection device and system, which relates to the field of tail gas detection, aims at solving the problem that the existing motor vehicle tail gas remote detection is poor in measuring accuracy, and can improve the measuring accuracy. The motor vehicle tail gas remote detection device comprises a motor vehicle tail gas detection module, a modulation and demodulation module and a data acquisition card which are successively connected with one another, wherein the motor vehicle tail gas detection module comprises a receiving-transmitting integration terminal and a reflection terminal, the receiving-transmitting integration terminal comprises a detection apparatus, an optical path filtering and focusing apparatus, a driving apparatus, afirst reflection apparatus and a detection light source; the reflecting terminal comprises a second reflection apparatus; and the detection light of a specified wavelength emitted by the detection light source is reflected to the second reflection apparatus by virtue of the first reflection apparatus; the second reflection apparatus backwardly reflects the detection light penetrating through the motor vehicle tail gas back to the first reflection apparatus, and the detection light enters the detection apparatus after being filtered and focused by the optical path filtering and focusing apparatus; and the driving apparatus can drive the first reflection apparatus to oscillate.

Description

technical field [0001] The invention relates to the technical field of motor vehicle exhaust detection, in particular to a remote measurement device and system for motor vehicle exhaust. Background technique [0002] At present, the existing motor vehicle exhaust measurement usually adopts NDIR technology (non-dispersive infrared absorption technology) and DOAS technology (ultraviolet differential absorption spectroscopy technology). 1. Specific absorption peaks in the ultraviolet band to select the broadband light source (ultraviolet lamp, or infrared lamp) of the corresponding band. The light after passing through the air mass is received by the detector part. According to the presence or absence of air mass, the detected optical signal However, because the above-mentioned motor vehicle exhaust measurement technology uses a broadband light source or a wide-band light source, there are cross-interference absorption of various gases, and the resolution of the measurement res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/39
CPCG01N21/39G01N2021/399G01N2021/3513G01N2021/1793
Inventor 姬红波李自丽董翀
Owner 华电智控(北京)技术有限公司