Cloth Color Difference Control System Based On Embedded Technology

Fabric color is an important indicator to evaluate the quality of cloth. When detecting the color cloth, we usually use off-line sampling method to detect cloth, the method is not only time-consuming, but also can't adjust the color, it may cause the waste of resources. With the development of modern industry, textile industry towards highly intelligent, automated development, in order to reduce color cloth, printing and dyeing to improve quality, reduce waste of resources, the introduction of color printing control work site has an extremely important role.In order to improve the quality of color dyeing cloth, this article is designed based cloth color control systems embedded technology, and will use embedded technology, sensor technology, signal processing technology and industrial control technology in textile printing and dyeing industries. The system is divided into four parts: color measurement module, color information processing module, color difference detection module and color difference control module. It sets cloth color measurement and color difference control in one set. The main work is as follows:1. Color measurement module based on ARM chip as the processor, with the method of photoelectric integration principle, using RGB color sensor TCS3200 to collect the color information. This module accomplish by a combination of hardware and software for data acquisition and processing. In order to improve the accuracy of color measurement, in terms of hardware, the system designs the white lighting module, CIE standard illumination and observation geometry 45 structure in the hardware, and in terms of software, the system designs white balance calibration, zero point set standard and digital filter for the acquisition of signal processing to improve the accuracy of color measurement.2. Color information processing module in accordance with the principles of colorimetry and color theory of color space information collected was processed. Color measurement module measured RGB color space information value, but the RGB color space does not have uniformity, can not be used to detect the color, so the module need to convert the measured color information to a uniform color space.3. Color detection module was that detect color difference between the sample and the actual product. The module will be treated sample color and the actual product color by color formula, quantized color gap between the sample and standard, in this way, the color values obtained by this method are in line with the human eye to color visual evaluation.4. The control module is designed to add color dye and the color of control to provides implementation measures. This module analysis the relationship of color and dye concentration, then established color-dye concentration model. According to changes in the dye concentration after adding color dye to determine the relationship between the amount of established color control model. Established color control model. Further, setting a constant flow rate, established the dye addition time model based on the size of the color difference values. By setting the color range of values, combined with a dye added time model, color model control and motor drive control valve switch to achieve color control module designed to complete the automation of dyeing operations.By using this system for a variety of colors and color difference measurement, analyzed from the measurement result, the system can better detect color and object color measurement, testing faster, and could achieve the purpose of on-line measurement. And by simulating from color control, it has a better result.