Diffuse reflection spectrum detection device and method

A spectral detection and diffuse reflection technology, applied in the field of diffuse reflection spectral detection devices, can solve problems such as disconnected after-sales technical services, impact on technical level, and degradation of conversion performance, and achieve low cost, accurate spectral measurement, and reduced warm-up time. Effect

Active Publication Date: 2021-03-09
天津国阳科技发展有限公司
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Problems solved by technology

At present, there are mainly the following problems in spectral analysis instruments: 1. Relying on imports, the high price of imported products and disjointed after-sales technical services hinder the popularization of this technology in our country and seriously affect the development of our country's technical level
2. By using multiple conversion mechanisms to realize the switching of sample light, background light and calibration light path, long-term online use will cause conversion performance degradation
3. It is easy to be interfered by background light during the measurement process, and the wavelength drifts easily during use

Method used

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  • Diffuse reflection spectrum detection device and method
  • Diffuse reflection spectrum detection device and method
  • Diffuse reflection spectrum detection device and method

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Embodiment Construction

[0042] The diffuse reflectance spectrum detection device disclosed in the present invention sequentially includes a detection light source, a calibration light source, a reflective cup, a reflector 1, a reflector 2, a diffuse reflector, a condenser lens, an optical fiber, an optical path switching device and a spectrometer. Wherein the optical path switching device is provided with a reflector, a standard reflector, a movement mechanism and a control circuit. The control circuit controls the position of the motion mechanism, and switches different optical paths by switching the positions of the reflector and the standard reflector to realize wavelength calibration, background spectrum calibration, dark noise calibration and real-time measurement. During the user's use, the background interference and the influence of wavelength drift can be automatically corrected to improve the detection accuracy and reliability. The device has the advantages of low price, easy maintenance an...

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Abstract

The invention discloses a diffuse reflection spectrum detection device. The device comprises a sample real-time measurement light path, a background spectrum calibration light path, a wavelength calibration light path, a light path switching device and a spectrograph, wherein the sample real-time measurement light path, the background spectrum calibration light path and the wavelength calibrationlight path are subjected to light path switching through the light path switching device; and the light is transmitted to a spectrograph through an optical fiber for spectroscopic detection. Accordingto the device the calibration light source and the detection light source are arranged at a short distance, so that the preheating time of the calibration light source can be reduced, the wavelengthcalibration time is shortened, the service life of the calibration light source is prolonged, stability of the internal temperature of the instrument is ensured, and accuracy of a measured value of asample is not influenced by wavelength calibration.

Description

technical field [0001] The invention relates to the technical field of optical detection, in particular to a diffuse reflection spectrum detection device and a detection method. Background technique [0002] Spectral detection is a technology widely used in scientific research and production. With the improvement of my country's spectral detection technology level and the increasing demand for spectral analysis instruments in many fields such as food testing and environmental monitoring in recent years, the scale of my country's spectral analysis instrument industry will continue to expand. At present, the main problems of spectral analysis instruments are as follows: 1. Reliance on imports. The high price of imported products and disjointed after-sales technical services hinder the popularization of this technology in my country and seriously affect the development of my country's technical level. 2. By adopting multiple conversion mechanisms to switch between sample light...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/47G01J3/44
CPCG01N21/4738G01N21/474G01J3/4412
Inventor 郭萌张旭李喆张超
Owner 天津国阳科技发展有限公司
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