Motor vehicle exhaust telemetering system
A technology of telemetry system and motor vehicle, which is applied to the traffic control system, traffic control system, measuring device and other directions of road vehicles, can solve the problems of time-consuming and complicated operation, cumbersome dimming and high cost, and achieves simple on-site installation and wide applicability. , the effect of low cost
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Embodiment 1
[0027] refer to figure 1 , figure 1 An embodiment of the present invention is shown, a motor vehicle exhaust remote measurement system, including a telemetry host 1 arranged on one side of the road and an optical reflection unit arranged on the other side of the road, the optical reflection unit can be a corner reflector 2 or a pyramid Angular, the telemetry host 1 further includes:
[0028] A detection light emission unit, the detection light emission unit includes a laser emission module 102 and an ultraviolet emission module 110, wherein the wavelength of the laser light emitted by the laser emission module 102 covers the absorption lines of CH and NO, and the wavelength of ultraviolet light emitted by the ultraviolet emission module 110 Covers the absorption lines of CO and CO2;
[0029] A detection unit, the detection unit comprises an off-axis parabolic mirror 105 and a Y-shaped optical fiber 106 for transmitting detection light, the off-axis parabolic mirror 105 and a...
Embodiment 2
[0039] refer to figure 2 , figure 2Another embodiment of the present invention is shown. The difference between this embodiment and Embodiment 1 is that in this embodiment, the collimated laser light and the collimated ultraviolet light in the measurement cell are not parallel, for example, in a four-meter-wide On the road, the stagger angle between the collimated laser light and the collimated UV light is between -0.5° and 0.5°. The collimated laser light returns to one focal point through the off-axis parabolic mirror 105, and the collimated ultraviolet light returns to the other focal point through the off-axis parabolic mirror 105, and the return light of the two is separated. Therefore, compared with the first embodiment, this embodiment does not need to separate the returned light, and directly receives the laser light through the photodetector 108 and receives the ultraviolet light through the spectrometer 109 .
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