Digital photoelectric grease integration color detecting system and its detecting method

Abstract

This invention relates to a photoelectric integral color test system including a light source and a NN processor characterizing that the light of the source is reflected by a diffusing reflection board to generate an uniform illumination field on the chip channel, the beam of which is emitted to the reflection mirror then enters into a charge coupling detector, a data collecting card and the NN processor. A test method for digitalized photoelectric grease integration color test system includes the following steps: 1, setting up a Lovibond color comparison chip database, 2, setting up a grease sample database, 3, a NN test stage and 4, test stage, which can search for the Lovibond expression of grease in the database to realize the automatic evaluation of the sample.

Description

technical field [0001] The invention relates to a photoelectric integral color measurement system, in particular to the problem of the instability compensation of a light source and the calibration of a database in the process of color analysis, and belongs to the technical field of photoelectric detection. Background technique [0002] Color is one of the important quality indicators of oil, and it is also the basis for oil grading, pricing and appearance when consumers buy from the shelf, so it has become a routine item for oil quality inspection. There are many factors that affect the color of oil, the most important one is the processing technology and conditions. Therefore, measuring the color of oil is of great significance to improve the processing technology and conditions of oil, to obtain high-quality oil and to evaluate the quality of oil. [0003] Commonly used methods for the determination of oil color include visual method, potassium dichromate method and Lovib...

AI Technical Summary

Problems solved by technology

The Lovibond colorimetric method has the following problems: For the same sample, different results will be obtained due to the visual differences of different operators, that is, there are inevitable human deviations; only intermittent operations can be performed, continuous and automatic cannot be achieved, and the labor intensity is high; at the same time , the color of Lovibond shades will become "out of alignment" with the prolongation of use time

[0004] There are three main automatic colorimetric methods for oil color analysis: (1) automatic colorimetric system based on spectrophotometric method, due to high cost, this type of colorimeter has not really been commercialized; (2) multi-filter based automatic colorimetric system The automatic colorimetric method mainly uses multiple optical filters to extract the main characteristic points of the spectrum corresponding to the color. The automatic colorimeter based on this method has been commercialized. The disadvantage is that the optical characteristics of the optical filters are high, and the cost of the instrument is also low. Higher; (3) the method that color CCD and scanner are used in combination, strictly speaking, this method is not automatic colorimetric system, the American McCloskey scientific instrument company that Texas Instruments adopts invents a kind of full-automatic edible oil colorimeter, it The measurement range is the European chromaticity standard yellow 40 / red 22 and the American AOCS chromaticity standard yellow 40 / red 22. Due to its limited measurement range, it is not widely used

The British Tintometer company launched the AF960 automatic colorimeter in 1984. This instrument can measure both the European chromaticity standard yellow 20 / red 4 and the American AOCS chromaticity standard yellow 70 / red 20, but the research found that AF960 and visual Lovibond Colorimeter AF710 does not correlate well and is therefore not widely used

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