Photoacoustic combined spectroscopy food and medicine ingredient content fast detection device and method

Abstract

The invention discloses a photoacoustic combined spectroscopy food and medicine ingredient content fast detection device and method. The device comprises a light source radiation unit, a detection room unit, a spectroscopy light splitting unit, a light source detection unit, a signal processing unit, a signal control unit and a signal display unit. The device and the method have the following beneficial effects that on one hand, the characteristics of convenience and high speed when feature wavelength is found by spectroscopy, the time is greatly saved, and great convenience is brought to the feature wavelength selection in a photoacoustic detection method, so that the detection efficiency is greatly improved; on the other hand, the photoacoustic technology is used for carrying out qualitative and quantitative detection on detected substances, and the inference due to various groups of scattered light in detected substances in spectroscopy is avoided, so that the detection accuracy is greatly improved.

Description

technical field [0001] The invention relates to the field of food and drug quality detection, in particular to a rapid detection device for food and drug components and content by photoacoustic coupled spectroscopy. Background technique [0002] With the improvement of people's living standards and the emphasis on health, the quality of food and medicine has increasingly become a hot spot of social concern. Recently, food and drug quality issues have been repeatedly exposed, such as the "cadmium rice" incident, the "poisonous milk powder" incident, the "melamine" incident, the "poisonous capsule" incident, etc. Similar incidents have seriously affected social stability and caused people to There is a crisis of confidence in the relevant manufacturers and supervisory departments. [0003] Food and drug safety is a major issue related to the national economy and the people's livelihood. At present, the inspection methods often used by the quarantine department mainly rely on ...

AI Technical Summary

Problems solved by technology

However, when photoacoustic technology is used for detection, its composition and content cannot be judged by real-time photoacoustic time domain signals, but it needs to be analyzed by obtaining photoacoustic values ​​at certain characteristic wavelengths

However, since the characteristic wavelength of the measured component is not known in advance, it is necessary to collect the photoacoustic signal of each wavelength, and then find out the characteristic wavelength, which makes the detection process take a long time, and whether the characteristic wavelength is selected correctly or not It directly affects the reliability and accuracy of the detection of the measured components

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