Alcohol concentration detector based on Raman spectrum

The utility model belongs to the field of concentration detection, and particularly discloses an alcohol concentration detector based on Raman spectrum, which comprises a main body, a shell, a sample cavity arranged on one side in the shell, and a detection cavity arranged on the other side in the shell, a laser is arranged in the sample cavity, a cuvette is arranged in the sample cavity at one end of the laser, and a lens I is arranged in the sample cavity at the other side of the cuvette; a diaphragm is arranged in the detection cavity, an optical filter is arranged in the detection cavity on the other side of the diaphragm, and a second lens is arranged in the detection cavity on the other side of the optical filter; according to the utility model, the Raman spectrum is adopted for detection, the measurement sensitivity is high, model fitting is easy, the alcohol concentration in various substances can be measured, the influence of the material of the cuvette is small, the device is not in contact with a s