基于FPGA的数字喷码识别产品取样系统研究

FPGA-based digital spray code identification product sampling system

识别喷涂数字标签是工厂自动化生产的重要工序。针对目前应用的数字识别系统在精度、效率方面存在的不足,基于FPGA芯片图像数字信号处理高效率的特点,笔者设计了一套新型的产品喷码数字识别系统。该系统由控制芯片、电源驱动板、摄像头、图像缓存器、按键、显示屏等组成。通过对摄像头采集的图像进行平滑卷积、二值化处理、投影分割和特征编码,实现对喷码数字的识别。测试结果显示,该系统能实现快速自动化喷码识别。

Identification of sprayed digital labels is an important process in the automated production of factories.In response to the deficiencies in the accuracy and efficiency of currently applied digital recognition systems,and based on the high efficiency of FPGA chip image digital signal processing,this paper designs a digital recognition system for product spraying.The system consists of a control chip,a power supply driver board,a camera,an image buffer,a keypad,a display screen and so on.The recognition of spray code numbers is achieved by smoothing convolution,binarisation,projection segmentation and feature coding of the image collected by the camera.The results of a test on the recognition of beverage spray codes show that the system can achieve rapid automatic spray code recognition.