Milk refractive index detection device and detection method thereof

Abstract

The invention discloses a milk refractive index detection device which is characterized in that a liquid injection opening a is formed in the upper end of a detection sample box; one side wall of the detection sample box is provided with flat glass, while the other side walls of the detection sample box is light-proof; an imaging layer is sprayed on the outer surface of the flat glass; a hidden box is arranged at the periphery of the imaging layer of the flat glass; a bracket is arranged on the inner wall in the hidden box; a semiconductor laser is arranged on the bracket; the outer end part of the hidden box is provided with a CCD camera connected with a computer through a data line; a light-shielding pipe lapped with the central position of the imaging layer on the flat glass is arranged at the light-emitting end of the semiconductor laser; the central line of the light-shielding pipe is coincided with the central line of the semiconductor laser, the central line of the CCD camera and the center of the imaging layer, and is vertical to the flat glass; the imaging layer is formed by a circular transmission scattering layer at the center and a light scattering imaging layer at the periphery of the transmission scattering layer, and a light-shielding layer is arranged at the periphery of the light scattering imaging layer. The milk refractive index detection device is high in measuring speed and high in measuring accuracy when being used for detecting milk.

Description

technical field [0001] The invention belongs to the technical field of liquid refractive index detection equipment or devices, and in particular relates to a device for detecting the refractive index of milk. Background technique [0002] The refraction method is one of the simple and effective basic methods for detecting the lactose mass fraction and water-incorporation rate in milk at present. Its principle is based on the relationship between the lactose mass fraction and water-incorporation rate in milk and its refractive index. The commonly used measuring instrument is the Abbe refractometer and the refractive index of milk is determined according to the refraction angle when light passes through the "triangular sample box". The common feature of these two instruments or methods is that according to the The optical image formed by the refraction at the time is used to obtain the refractive index of the milk. Milk is a colloidal liquid in a uniform and stable suspension...

AI Technical Summary

Problems solved by technology

Milk is a colloidal liquid in a uniform and stable suspension state and an emulsified state, that is, from a physical point of view, there are a large number of suspended particles in milk, precisely because this suspended particle has a strong impact on transmitted light. Due to the scattering effect, the boundaries of the optical images formed by the above two instruments or methods in the milk detection are unclear, and it is difficult to debug, which seriously affects the detection accuracy and efficiency.

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