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1、成都纺织高等专科学校毕业设计说明书 成都纺织高等专科学校机械工程与自动化系 毕业设计任务书 题目名称：濛新有线电视系统设计 题目性质：真实题目 虚拟题目 学生学号：200902043043 指导老师：田能炎 学生姓名： 杨欢 学生专业：机电一体化091 成都纺织高等专科学校机械工程与自动化系 2012年2月20日 中文摘要有线电视是一种采用同轴电缆、光缆或者微波等媒介进行传播，并在一定的用户（指住宅小区和机关、单位宿舍等居民集中居住区）中分配或交换声音、图像、数据及其他信号，能够为用户提供多套电视节目乃至各种信息服务的电视体系。有线电视网最大的优势是带宽与电信网的宽带瓶颈相比更加能适应人们对于
2、信息交流的大容量高速度的要求，我国典型的有线电视网的带宽是750M。作为社会信息基础设施的有效组成部分的有线电视网，在社会生活中扮演着极其重要的角色。但，随着社会的进步和人们对信息化服务的要求越来越高，用户对信息网在交互性、智能化、承载综合业务能力等各方面都提出了新的要求。卫星电视传送的星网结构模式，是21世纪实现广播电视覆盖的最佳方式，也将成为未来信息网络的基础框架。这样，立足于现有的有线电视HFC网络，融入了现代通信技术、宽带网络技术和多媒体技术，我们便可以打破传统的行业界限，有效地实现“三网融合”，建立起一个宽带高速的公用信息网络体系，将社会所需的各种信息服务也全部纳入到网络体系中，从而
3、给人们的学习、工作、生活等诸多方面带来一次前所未有的革命。因此本小区的设计考虑到系统结构具有兼容性、扩展性等特点，可以集成不同厂商不同类型的优质产品；保证系统随技术的发展和科学的进步，能不断得到升级和完备；保证还具有开放性，保证与有线电视台并网运行，为适应多功能和外向型发展的需要，向用户提供舒适、便利、安全的环境。系统设计中还考虑到了服务性和便捷性，同时，在实现系统得到先进、可靠的前提下，达到功能和经济的优化设计，以最佳的性能价格比来实现系统功能。关键词：有线电视、挑战、信息、速度、大容量、发展II成都纺织高等专科学校毕业设计说明书 ABSTRACT The cabled T.V. is a
4、kind of adoption coaxial cable, fiber optic cable or microwave etc. the medium carries on the dissemination, and assign or exchange the voice in certain customer, picture, data and other signals, can provide for the customer several television programs are to go to various television system of infor
5、mation service.The biggest advantage in cable TV is the request that bandwidth and the breadth of the telecommunication nets take the big capacity high speed degree that the bottleneck compare and can adapt the people to communicate to the information more, the bandwidth of the cable TV of the our c
6、ountry typical model is a 860 Ms.Be the social information infrastructure to constitute the cable TV of the part effectively, play very and important role in the social activities.But, along with the progress of the society and people more and more high to the request of the information-based servic
7、e, customer to the information net is hand over with each other sex, intelligence turn, loading comprehensive the business ability etc. the everyone faced to put forward the new request.The star net structure mode of the satellite television transmission, is the best way that 21 centuries carries ou
8、t to broadcast the television to overlay, also will become the foundation frame of the information network of the future.Thus, have a foothold in the existing cabled T.V. HFC network, melted to go into the modern correspondence technique, breadth to take the network technique and multi-media techniq
9、ues, we can break the traditional profession boundary then, carrying out three nets blend availably, building up rising Mr. that a breadth takes the high speed with the information network system, need society of various information service also bring into the network system all, thus give the peopl
10、es study, work, live etc. is various to bring an unprecedented revolution in many ways.The design of the therefore originally small area in consideration of the system structure has and permits sex and expands sex etc. characteristics, can gather different factory high-quality product of different t
11、ype;Guarantee the system with technical development and the progress of sciences, can get the upgrade continuously and complete;The assurance still has sex of open, the assurance and cable television stations combine nets circulate, for orientation multi-function and a demand for develop of extrover
12、t, provide toward the customer comfort, make a convenience of, safety of environment.The system design medium return in consideration of service and convenience, at the same time, at carry out the system to get the forerunner, dependable premise under, attain the function and economy excellent to tu
13、rn the design, compare with the best function price to carry out the system function.Keyword:Cabled T.V、challenge、information、speed、big capacity、development d T.V、challenge、information、speed、big capacity、developmIII 目录一、目录.二、绪论. 1.有线电视系统概述. 2.有线电视系统发展.三、设计要求. 1.设计内容及要求. 2.设计原始材料. 3.设计完成后提交的文件和图表.四、CATV系统设计方案概述.五、前端系统设备与设计. 1.前段设备的初选. 2.各种设备技术参数与选择依据.六、光缆传输的设备选择与设计.1.光缆传输系统设备初选.2.各种设备技术参数与选择依据
