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Multi-wavelength remote Raman laser radar mechanism

A Raman laser, multi-wavelength technology, used in the re-radiation of electromagnetic waves, radio wave measurement systems, and the use of re-radiation, etc., can solve the problems of shaking, inaccurate spectral analysis, and inability to use radar mechanisms, achieving a simple structure, Spectral analysis for precise results

Active Publication Date: 2017-10-27
CRRC HANGZHOU CO LTD
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Problems solved by technology

[0003] The present invention provides a multi-wavelength long-range Raman lidar mechanism, which mainly solves the problem that the radar mechanism in the prior art cannot be applied to subway vehicles, and it will shake when used, so that it is difficult to focus on the dangerous substance to be measured. Instability, technical problems such as spectral analysis is less accurate

Method used

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Embodiment

[0019] Embodiment: a kind of multi-wavelength long-range Raman lidar mechanism of this example, such as figure 1 , including the cloud platform 1, the cloud platform is U-shaped as a whole, and the bottom of the cloud platform is fixed with a mobile car fixing plate 18. The pan / tilt is movably connected to the main body 3 through the main body connecting column 2, and the lower part of the main body is fixed with a laser 4, and a beam expander 5 is provided in front of the laser, a lower reflector 6 is provided in front of the beam expander, and an upper reflector is arranged above the lower reflector Mirror 7, lower mirror, upper mirror are 45 degree mirrors. A telescope 8 is arranged at the rear of the upper reflector, and the telescope is fixed on the main body. The telescope is connected with a spectrum analysis system, which is connected with a signal analysis interaction system. The connecting column of the main body is connected with a motor 9, and the motor is connect...

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Abstract

The invention relates to laser radar, in particular to a multi-wavelength remote Raman laser radar mechanism. Technical problems that the radar mechanism in the prior art cannot be applied to a subway vehicle, the radar mechanism waggles during use so as to be unstable when focusing a to-be-detected dangerous substance, and spectral analysis is not accurate are mainly solved. The multi-wavelength remote Raman laser radar mechanism comprises a cloud platform (1); the cloud platform (1) is movably connected with a main body (3) through a main body connecting column (2); a laser (4) is fixed at the lower part of the main body; a beam expander (5) is arranged in front of the laser; a lower reflective mirror (6) is arranged in front of the beam expander; an upper reflective mirror (7) is arranged above the lower reflective mirror; a telescope (8) is arranged behind the upper reflective mirror; the telescope is fixed on the main body; the telescope is connected with a spectral analysis system; and the spectral analysis system is connected with a signal analysis and interaction system.

Description

technical field [0001] The invention relates to a laser radar, in particular to a multi-wavelength long-range Raman laser radar mechanism. Background technique [0002] With the development of vehicle and computer technology, vehicle assisted driving / automatic driving has become a hot research field. Among them, assisted driving / automatic driving vehicles need to add necessary sensing equipment for detection and perception due to the need for surrounding obstacles and environmental perception. With its advantages in recognition, ranging and positioning, lidar has been widely used in assisted driving / automatic driving technology. Chinese patent discloses a laser radar scanning method and device (publication number: CN106872994A), including: a shadow area acquisition module, used when the laser radar scans the target obstacle in the detection area, and the first scanning beam emitted by the laser radar is in the When the length value of the target obstacle projection is less...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/93G01S7/481
CPCG01S7/481G01S17/931
Inventor 金星焕梁烁石晶
Owner CRRC HANGZHOU CO LTD
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