Raman spectrometer capable of automatically discriminating sample and method for automatically discriminating sample

Abstract

The invention discloses a Raman spectrometer capable of automatically discriminating a sample and a method for automatically discriminating a sample. The Raman spectrometer comprises a Raman spectrometer main body, a detection probe, and a signal transmitting device and a signal receiving device which are arranged on two sides of the Raman spectrometer probe, wherein signal light emitted by the signal transmitting device faces the detection direction of the detection probe and is configured to be received by the signal receiving device after being reflected by a sample correspondingly detectedby the detection probe. According to the embodiment, before Raman detection, whether the sample exists on the detection channel or not is judged through the signal transmitting device and the signalreceiving device, and subsequent Raman detection is carried out only when the sample exists, so that time consumption caused by empty detection due to the fact that no sample exists in the detection channel is avoided. Besides, the infrared photoelectric sensor is used for automatically detecting whether a sample exists or not, compared with a camera, the detection time is greatly shortened, the requirement for structural space is small, installation is easy, and cost is low.

Description

technical field [0001] The invention relates to the field of Raman spectroscopy, in particular to a Raman spectrometer for automatically identifying samples and a method for automatically identifying samples. Background technique [0002] Raman spectrum is a kind of scattering spectrum. Raman spectroscopy is based on the Raman scattering effect discovered by Indian scientist C.V. Raman (Raman). It analyzes the scattering spectrum different from the frequency of the incident light to obtain molecular vibration and rotation information, and is applied to the study of molecular structure. a method of analysis. [0003] At present, high-throughput Raman spectrometers based on Raman spectroscopy are all manual detection. Since the Raman signal is very weak, the signal intensity can only be enhanced by prolonging the integration time; To scan the dark current, the actual working time is doubled, so the Raman detection time is relatively long, and the detection time of a sample g...

AI Technical Summary

Problems solved by technology

[0003] At present, high-throughput Raman spectrometers based on Raman spectroscopy are all manual detection. Since the Raman signal is very weak, the signal intensity can only be enhanced by prolonging the integration time; To scan the dark current, the actual working time is doubled, so the Raman detection time is relatively long, and the detection time of a sample generally needs to reach 20-40s. The 1064nm Raman signal is weaker, and the detection time is longer. The detection of a single sample for several minutes

[0004] In the automatic detection process, the samples are placed on the sample plate, and the Raman spectrometer detects each sample through sequential detection. However, if no sample is placed at a certain position on the sample plate, the problem of empty detection may occur. lead to a lot of wasted time

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