【作者】 娄小冬；

【导师】 潘双夏；

【作者基本信息】 浙江大学 ， 机械设计及理论， 2005， 硕士

【摘要】 纸币清分机是近年来得到快速发展的金融光机电一体化设备。论文针对纸币清分机产品的特点,基于数字图像处理、模式识别、神经网络理论及数字信号处理等先进理论,结合当今在相应领域的最新发展应用技术,提出了清分机系统的解决方案,其中包括新旧识别算法和 ARM+DSP 双核的系统平台构架的两个创新点,并得以使系统高性价比的实现。论文主要涉及如下几个方面: 1、介绍清分机系统图像处理算法设计基础。首先,运用数字图像处理的一 些主要方法对纸币的图像特征进行了分析。在分析的基础上,介绍了清 分机系统中图像处理相关知识,为实际系统算法设计奠定理论的基础。 2、介绍了清分机系统中硬件平台中的关键部分的技术优势及应用领域,为 系统平台的硬件选型提供技术支撑。 3、通过分析清分机系统的特点,提出了软硬件平台解决方案,从系统的选 型和工作流程等方面详细论证了系统方案的实现。首先,从系统硬件平 台的关键部分来阐述系统的选型论证。其次,从清分机系统的工作流程 来阐述系统各个核的系统软件的流程。最后,从清分机系统的实现功能 来具体介绍系统各个功能的图像处理算法设计。 4、系统的试验结果及性能分析。在系统平台的实现方案上,基于重复试验 的基础上,对系统的实现方案的具体细节不断的调整,获得系统最佳的 性价比。基于系统结果的分析,得出系统方案的稳定性、高性价比等优 点及系统可以进一步提高改善的速度、新旧清分程度方面。更多还原

【Abstract】 Bill sorter, which has fast been developing lately, is an optical, mechanical and electrical financial facility. In this paper, against the character of the bill sorter, on the basis of the digital image processing .pattern recognizition,digital signal processing, the neural network theory, and so on, combined with the advanced and the most up to date technology in the relative application field , author makes a thorough study on the key technology, brings forward a new solution for the bill sorter’s system, the two new innovations of the classification arithmetic of the new and used bills and ARM+DSP dual kernel system included , and realize it with high rate between performance with value . The paper consists of the following parts:1. The design of the image processing arithmetic. Firstly, With the main study methods of the digital image processing, the bill’s image characters are analyzed. Then, on the basis, the relative knowledge to lay down the solid base for the arithmetic design of the image processing applied in the real bill sorter’s system is introduced.2. The technology dominance and application field about the key part in the bill sort system to give the technology support for the system solution about the hardware is demonstrated.3. By analyzing of the character of the bill sorter system, a new solution for the system platform about the hardware and software is presented, and the realization in details from the two aspects in the choose of the key device and system work flow, and so on are also demonstrated. Firstly, the reason about choose of the key hardware part in the system platform is given. Secondly, the system’s software work flow of the every core in the system plat form is described. Finally, the arithmetic design of every function realization in detail is introduced.4. The test results from the system platform are analysed to evaluate the system’s performance. On the basis of the repeating tests on the realized platform , by the adjusting the parameter of the system , the high performance-price ratio are obtained. Some merits such as high stabilization and high performance-price ratio and some promotion such as system speed and new—old sort are realized.更多还原