Method and system for calibrating standard colorimetric plate for cotton colorimeter

Abstract

The invention provides a special method for calibrating a standard colorimetric plate for a cotton colorimeter, comprising the following steps: irradiating a standard white plate with symmetric visible light source in the 45-degree angle direction; receiving and focusing reflected light and eliminating parasitic light; transmitting the reflected light signal; obtaining the reflected signal intensity of each wavelength of the standard colorimetric plate to be tested; and calibrating the reflectance of each wavelength of the standard colorimetric plate. The invention also provides a system for calibrating the standard colorimetric plate for the cotton colorimeter, comprising a microprocessor, a testing bench, a symmetric continuous spectrum visible light source, a first optical system; a second optical system, a monochromator, a photomultiplier tube, an amplifier and an analog / digital converter. The amplified electrical signal is sampled under the control of the microprocessor and is transmitted to the microprocessor. The testing condition is closer to the cotton color testing condition, is beneficial to controlling the cotton colorimeter calibration precision and is available to the more accurate test and calibration of the standard colorimetric plate of different area.

Description

technical field [0001] The invention relates to a calibration method and system for a standard color plate of a cotton color meter. Background technique [0002] Cotton color inspection is an important basis for cotton classification. As a color measuring instrument for cotton color measurement, it must integrate the spectral luminous efficiency characteristics of the human eye and the spectral characteristics of its lighting source. At the same time, the measurement system should meet the international standard lighting and geometric measurement conditions, so as to objectively evaluate and communicate the cotton color. Test Data. The calibration of the cotton color meter adopts the method of standard color plates. At present, the standard color plates used in China are basically directly derived from the standard color plates provided by Uster Company of the United States. Therefore, in the development process of the domestic cotton color meter, the standard color plates ...

AI Technical Summary

Problems solved by technology

Its disadvantages are: on the one hand, it is not suitable for the color plate calibration of cotton color measurement; on the other hand, the area of ​​the measured object is very small. For the color plate, the measured value cannot reflect the overall situation of the color plate, which affects the accuracy of the color plate calibration. sex

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