Spectrum sensing system capable of real-time calibration and spectral processing method

Abstract

The invention discloses a spectrum sensing system capable of real-time calibration. The spectrum sensing system comprises a slit piece and a lighting light collection assembly, a long slit for passinglight of incident objects and a short slit for passing light of incident lighting are successively arranged on the slit piece vertically, and the long slit and the short slit have different verticallengths; an imaging objective lens is arranged at the front end of the long slit to form an object light incident light path; the lighting light collection assembly is located in the front of the short slit, and comprises a spectral collection head, an optical fiber, and a spectral diverging head, the spectral diverging head is arranged at the front end of the short slit to form a lighting light incident light path; the object light incident light path and the lighting light incident light path are provided with a shared optical splitting system and imaging sensor at the rear end of the slit piece, an object light imaging region corresponding to the object light incident light path and a lighting light imaging region corresponding to the lighting light incident light path are arranged on the imaging sensor, and the imaging sensor is further electrically connected with a main control board. The invention further discloses a spectral processing method, and automatic real-time calibrationof a light source is realized by sharing the same light path.

Description

technical field [0001] The invention relates to the technical field of spectral sensing, in particular to a real-time calibrated spectral sensing system and a spectral processing method thereof. Background technique [0002] The spectral sensing system is a system that acquires light carrying object information and processes it to obtain its corresponding spectrum. Judging and analyzing the properties of an object through the spectrum of the object has the advantages of fast speed, good selectivity, and high sensitivity, so it is widely used. use. Commonly used spectra such as reflection spectrum, transmission spectrum, fluorescence spectrum, etc., the acquisition and calculation methods of the spectrum are related to the illumination source. [0003] However, the illumination source of the system may drift in wavelength or intensity during use, and its state has a great impact on the reliability of the obtained spectrum. Therefore, it is necessary to calibrate the illumina...

AI Technical Summary

Problems solved by technology

However, all three methods have their obvious limitations. Periodic calibration of lighting sources can only reflect the situation at the time of calibration, and cannot make corresponding adjustments for real-time environmental changes.

Whiteboard reflection calibration needs to lay a standard reflector near the object to be measured, which is inconvenient to use

Conventional real-time acquisition and calibration requires an additional set of spectral sensing equipment, which greatly increases the cost and weight of the equipment, and can only be applied to some large-scale, fixed-position spectral sensing systems

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