【作者】 郭丽；

【导师】 戴虽愚；

【作者基本信息】 昆明理工大学 ， 检测技术与自动化装置， 2002， 硕士

【摘要】 鉴于打孔水松纸透气度在线检测技术在烟草行业中的重要性，本文在全面总结打孔水松纸透气度在线检测技术发展现状的基础上，通过与玉溪水松纸厂合作，发展了一种新型打孔水松纸透气度在线检测系统，对这一系统进行了全面的初步开发设计及实验研究。全文的主要内容包括打孔水松纸透气度在线检测系统的设计，检测系统的性能实验及其理论探讨几个部分。 第一章综述了国内外打孔水松纸透气度在线检测技术的发展现状，介绍了几种常见的水松纸透气度测定仪，提出了本文的研究内容。 第二章论述了新型打孔水松纸透气度在线检测系统的设计思想及技术方案，详细介绍了透气度在线检测系统的原理、结构。对系统使用的各元器件性能参数进行了深入的分析及元器件的选型，在此基础上，完成了水松纸透气度在线检测系统的硬件及软件设计工作。 第三章对本文设计的检测系统进行了实验研究，通过实验详细分析了影响检测系统检测精度和运行稳定性的主要因素，这些因素包括环境温度和湿度、走纸速度、传感器灵敏度等。实验结果及系统试运行情况表明了本系统的设计是可行的。 第四章给出了全文总结，提出了对这一技术深入研究的建议。 本文首次对打孔水松纸透气度在线检测技术进行了研究，促进了国内这一技术领域的研究水平，具有重要的实际和理论意义。更多还原

【Abstract】 Tipping paper with micro perforation is an important material for the cigarette manufacturing industry, it can reduce the nicotine and condensate levels for filter cigarettes. Porosity measuring of porous and/or perforated (with laser or electrostatic perforation systems ) web material which are produced in speed ranges up to 600 m/min and web widths up to 2000 mm are difficult with pneumatic systems because these methods includes disadvantages such as web tangency, web toughing, material flaking, dust and dirt flowing in the system. These difficulties are ideally overcome with stationary, optical porosity measurement systems. In recent years, with the emphasis on human health and environment protection, optical on-line porosity measuring technology is increasingly important.This dissertation is mainly devoted to the design, experimental and theoretical study of a new-type optical on-line porosity measuring system, this system includes light unit, optical multisensors array, driving units, computer, etc. It can effectively attain high-precision porosity value.This dissertation consists of following four parts:The dissertation starts with a brief description of typical tipping paper porosity measuring system, the recent progresses of the porosity measuring technology are reviewed, and a brief introduction concerning the dissertation work is given.In part two, the design idea and mechanism of optical on-line porosity measuring system is put forward and the system construction for Yu-xi Tipping Paper Factory is described in detail. The characteristics of various components used in the system, such as photosensor, optical source, stepper motor, compressing air unit, etc, are discussed, the types of these components are selected. To eliminate temperature effect on measuring precision, a new idea about temperature-compensated technique is put forward in this dissertation, and used in the system. The software used in the porosity measuring system is designed.In part three, the tests that some factors effects the system measuring precision are carried out, these factors include environment temperature and moisture, paper speed, sensor sensitivity, etc. The problems appearing during the experiment procedures are analyzed and discussed, some improvement ways are presented.Finally, the achievement and conclusions of this dissertation are summarized, and some suggestions for the forward work are presented.更多还原