Multi-probe infrared spectrometer

Abstract

The multi-probe infrared spectrometer comprises a system power supply circuit module, a spectrum sensor probe circuit module, an ADC sampling circuit module and a DAC voltage output circuit module, wherein the spectrum sensor probe circuit module, the ADC sampling circuit module and the DAC voltage output circuit module are electrically connected in sequence; the system power supply circuit module provides working voltage for the ADC sampling circuit module, the DAC voltage output circuit module and the spectrum sensor probe circuit module; an assembly of the spectrum sensor probe circuit module comprises a plurality of spectrum sensor probes which are connected in parallel; the wave band of the spectrum sensor probe ranges from 1550 nm to 1850 nm, and an MEMS-FPI tunable filtering lens is arranged in the spectrum sensor probe. The multiple spectrum sensor probes are connected in parallel and then connected with the amplifying circuit to output signals, weak current signals on all spectrum probe branches are superposed and then amplified, and therefore the spectrograph can detect components with lower content, and compared with a single-probe spectrograph, the spectrograph has the advantages that the detection efficiency is improved, and the detection cost is reduced. The method has the characteristics of high detection precision, strong anti-interference capability and the like.

Description

Technical field [0001] The invention involves an infrared spectrometer, especially a multi -probe infrared spectrometer. Background technique [0002] Near-infrared spectrum is an electromagnetic radiation wave between visible light (VIS) and medium infrared (MIR). The first non -visible light area. Near-infrared spectrum region is consistent with the frequency of vibration of hydrogen-containing groups (O-H, N-H, C-H) in organic molecules and the consistency of multiplied absorption areas at all levels. Through the near-infrared spectrum of scanning samples, the organic molecule in the sample can be obtained The characteristic information of the group, and the use of near -infrared spectrum technology to analyze the samples of samples are convenient, fast, efficient, accurate and cost -effective, do not destroy the sample, do not consume chemical reagents, and do not pollute the environment. Therefore Favorite. At present, near -infrared spectrum is widely used in food testing, ...

AI Technical Summary

Problems solved by technology

[0003] However, for the detection of near-infrared light at present, when a single probe is in use, when the content of the component to be detected is low, the electrical signal of the probe will be very weak at this time, resulting in no signal during sampling

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