哈尔滨理工大学学士学位论文
屏蔽型（SUTP）六 类对称数字通信电缆的开发
摘要
随着信息化发展的进程，人们对数字、声音、图像等信息传输速度的更高要求，网速越来越成为困扰人们的一大因素。在光纤还没有到达桌面以前，六类布线系统以其高带宽和廉价的经济性能，作为替代产品越来越受到人们的认可。在今后一段时间内，六类布线系统还将占有统治地位。然而其不稳定的传输性能以及人们对保密性能的渴望，造就了新的屏蔽系统的发展。正是社会的需要，推动了布线世界的改革步伐。
屏蔽系统，具有优异的电磁兼容性（EMC）和保密性，因此也就更具有发展潜力，也是近几年布线系统的发展方向。本文紧跟时代潮流，结合所学专业，成功开发了屏蔽型（SUTP）六类对称数字通信电缆，作为对自己四年所学的一个总结。
本文首先结合所学知识，参考前人的技术成果，以及在工厂的实际考察，确定了其宏观结构，利用通信电缆的有关原理，对其结构进行了大量细致的计算，最终又通过数次试产和测试，对其结构进行了细节上的调整和改进，直到产品的性能完全符合六类对称数字通信电缆的行业标准。本文从设计、计算、生产和测试几个部分作了大量细致的阐述，并附有一些简图，以便读者能更好的理解作者的思想。
关键词 屏蔽；六类；对称数字通信电缆
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哈尔滨理工大学学士学位论文
The exploitation about balanced category six cable of shielding type(SUTP)
Abstract
With the process of informationization development, people, to such the requiring higher of transmission speed of information as the figure , sound , picture ,etc., the network speed becomes a great factor of perplexing people more and more. Before the optic fibre has not reached the tabletop yet, six kinds of wiring system are with its high bandwidth and low-priced economic performance , approved of more and more substitute products by people. In a period of time to come, six kinds of wiring system will also occupy the dominant position. But its unstable transmission performance and people's aspiration of secret performance , have brought up the development of the new shielding system. It is exactly a need of the society, promote the reform paces of the world of connecting up.
Shielding system, electromagnetic compatibility (EMC ) and privacy with excellence, so have development potentiality even more, it is the developing direction of the wiring system in recent years too. This text follows the tendency of the day closely, combine the specialities studied , has succeeded in developing balanced category six cables of shielding type (SUTP ), as a summaries studied of four years to oneself.
This text combines the knowledge studied at first, consult forefathers' technological achievement , and the actual investigation in the factory, confirm its macrostructure, utilize relevant principles of the communication cable , has carried on a large amount of careful calculation to its structure, and test through several trial production finally, carry on adjustment and improvement on the detail to its structure, until the performance of the products totally accords with the sector standards of six kinds of symmetrical digital communication cables . - II -
哈尔滨理工大学学士学位论文
This text has done a large amount of careful exposition from designing, calculating, producing and testing , enclose some sketch , so that the thought of author can be understanded better by readers.
Keywords shield; cat 6; balanced category cable
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哈尔滨理工大学学士学位论文
目录
摘要 .................................................................................................................. I Abstract ........................................................................................................... II
第1章 绪论 .................................................................................................... 1 1.1 六类布线标准的意义 ............................................................................... 1 1.2 预言未来六类布线发展趋势 ................................................................... 2 1.3 屏蔽基本原理 ......................................................................................... 3 第2章 理论设计 ............................................................................................ 5 2.1 绝缘线芯的确定 ....................................................................................... 5 2.1.1 导电线芯的确定 ................................................................................ 5 2.1.2 绝缘厚度的确定 ................................................................................ 5 2.2 芯线对绞 ................................................................................................... 8 2.2.1 对绞节距的选择 ................................................................................ 8 2.2.2 退扭选择 ............................................................................................ 8 2.3 单绞成缆 ................................................................................................... 9 2.3.1 填充骨架 ............................................................................................ 9 2.3.2 聚酯带 .............................................................................................. 10 2.3.3 屏蔽层 .............................................................................................. 10 2.3.4 地线 .................................................................................................. 10 2.4 外护层挤出 ............................................................................................. 11 第3章 理论计算 .......................................................................................... 12 3.1 导电线芯的计算 ..................................................................................... 12 3.2 绝缘线芯的确定 ..................................................................................... 12 3.3 绞合节距的选择 ..................................................................................... 12 3.4 绞入系数的计算 ..................................................................................... 13 3.4.1 对绞线对绞入系数的计算 .............................................................. 13 3.4.2 单绞成缆绞入系数的计算 .............................................................. 14 3.5 复合介电常数的计算 ............................................................................. 14 3.6 电缆的电容 ............................................................................................. 15 3.7 电缆的特性阻抗 ..................................................................................... 16 3.8 电缆的衰减 ............................................................................................. 18 3.9 电缆结构改进后的计算 ......................................................................... 19 第4章 工艺流程 .......................................................................................... 22 4.1 高速串联生产线生产绝缘芯线 ............................................................. 22 4.1.1 拉丝单元 .......................................................................................... 23 - IV -
哈尔滨理工大学学士学位论文
4.1.2 软化单元 .......................................................................................... 23 4.1.3 挤塑单元 .......................................................................................... 25 4.1.4 检测单元 .......................................................................................... 28 4.1.5 收线单元 .......................................................................................... 28 4.2 CT500-Ⅱ型退扭机和高精度对绞机完成芯线对绞 ............................. 28 4.3 YD630单绞机成缆 ................................................................................. 29 4.4 CB-φ65护套挤出机挤出外护层 ............................................................ 30 第5章 样品试制 .......................................................................................... 31 5.1 绝缘芯线的生产 ..................................................................................... 31 5.2 芯线对绞 ................................................................................................. 31 5.3 单绞成缆 ................................................................................................. 31 5.4 外护层挤出 ............................................................................................. 31 第6章 样品测试 .......................................................................................... 33 6.1 测试设备 ................................................................................................. 33 6.1.1 测试方案 .......................................................................................... 33 6.1.2 测试设备的性能与测试结果的关系 .............................................. 33 6.2 测试人员的技术水准与测试结果的关系 ............................................. 36 结论 ................................................................................................................ 39 致谢 ................................................................................................................ 41 参考文献 ........................................................................................................ 42 附录 ................................................................................................................ 43
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