An active and passive dual-mode spectral detection method

A spectral detection, active and passive technology, applied in the field of photoelectric detection, can solve the problems of inability to achieve full multiplexing of optical channels, inability to complete active and passive spectroscopy, high system complexity, and improve active spectral resolution and passive spectral signal-to-noise ratio. , improve compactness and convenience, and improve the effect of detection efficiency

Active Publication Date: 2022-02-18
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] Conventional active-passive combined spectral detection often cannot achieve full multiplexing of optical channels, resulting in high system complexity. Conventional combined systems need to prepare two sets of spectrometers, because conventional spectrometers cannot complete active and passive spectral detection at the same time

Method used

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  • An active and passive dual-mode spectral detection method
  • An active and passive dual-mode spectral detection method

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Embodiment Construction

[0023] The specific embodiment of the present invention is as figure 1 and figure 2 shown.

[0024] The active-passive dual-mode spectrum detection method proposed by the invention is realized on the active-passive dual-mode spectrometer, and the spectrometer is composed of two parts inside and outside the fuselage. Among them, there are two-in-one optical fiber 3, interface 4, slit 5 and main controller 1 outside the body 7; Grating 14, passive blazed grating 15, grating bracket 16, cylindrical converging lens 17, linear variable filter 18, back-illuminated array detector 19, array driving circuit 20, passive converging mirror 22, passive collimating mirror 24, Exit slit 25, shading screen 26, photomultiplier tube 27, electric scanning table 28, scanning controller 29, working circuit 30;

[0025] The interface 4 (note: this embodiment is the SMA905 interface) is fixedly installed on the fuselage 7, and the two-in-one optical fiber 3 is connected to the interface 4. There...

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Abstract

The invention discloses an active and passive dual-mode spectrum detection method, which comprises three steps of active spectrum detection, passive spectrum detection and active and passive spectrum analysis. The beneficial effect of the present invention is that the optimization of the internal structure of the spectrometer is realized by adopting ingenious electromechanical switching and grating area splitting, and the compactness and convenience of the system are improved; the same spectrometer and the same optical fiber inlet realize the composite detection of active and passive spectra, and improve the detection efficiency. Efficiency: According to the different characteristics of active and passive spectra, different designs are adopted at the sensor end to achieve targeted spectral detection, improve active spectral resolution and passive spectral signal-to-noise ratio.

Description

technical field [0001] The invention relates to a dual-mode spectral detection method, in particular to a spectral detection method based on an active and passive dual-mode spectrometer, which is suitable for material composition analysis based on spectral detection and belongs to the field of photoelectric detection. Background technique [0002] In the field of deep space exploration, the analysis of planetary surface matter requires unmanned automatic photoelectric detection methods. Compared with other complex material composition detection methods, the photoelectric material composition analysis method based on laser spectroscopy does not require time-consuming reagent addition and pretreatment preparation, can improve the analysis speed, is suitable for real-time analysis, and can multi-element and multi-element Simultaneous analysis of molecules shows great advantages. [0003] In the detection technology of planetary material spectrum, one type belongs to the active...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/63G01N21/27
CPCG01N21/63G01N21/27
Inventor 万雄王泓鹏袁汝俊李晨红
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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