颜色传感器在人民币纸币识别系统中的应用

摘要

This paper introduces a recognition method of paper currency denomination on TCS230 color sensor. In this paper currency recognition system, one color sensor detects the watermark position on paper currency, and the other one detects the portrait position on paper currency. MCU processes the output frequency signals of the two color sensors. After RGB color space switching to the HSV color space, the color of determinand can be distinguished according to the value and hue, two of the conversion results. The test results indicate that this system has good accuracy.%介绍一种基于 TCS230颜色传感器的人民币纸币面值识别方法。在点钞机人民币纸币识别系统中，以单片机为核心，利用两个 TCS230分别对人民币纸币水印位置和人像位置进行颜色检测，将采集到的频率信号送入单片机中进行数据处理。采用 RGB 色彩空间转换到 HSV 色彩空间的颜色算法，根据转换得到的亮度和色调值判别纸币颜色，进而得到被测纸币的面值。实验结果表明，该系统具有良好的精度。