针对长距离多业务传输视频光端机的研究与实现

发布时间：2018-03-03 22:20

本文选题：视频光端机　切入点：光纤通信　出处：《中国科学院大学(中国科学院工程管理与信息技术学院)》2017年硕士论文　论文类型：学位论文

【摘要】：随着光纤通信技术的发展和光纤网络应用的逐渐普及,由于光纤通信在信号传输质量、抗干扰能力以及可扩容性等方面的明显优点,光纤通信终端传输设备正逐渐取代以电缆传输为主的传统信息数据传输设备,尤其是在视频监控领域,视频光端机的出现满足了视频长距离传输的需求。本课题是为江苏省公安厅对连云港市政安防监控系统定制视频光端机项目而开发,应用于航天二院和天津武警部队多个边防监控系统改造工程;主要是解决利用现有的光纤网络资源,提高光纤两端设备业务承载能力,从而提高光纤的利用率问题。本课题主要针对远距离实时视频监控传输的应用场合,提出了一种基于光纤传输的光传输平台设计,最终实现一种多业务、可灵活配置、长距离传输的双光、双电备份的视频光端机;硬件的总体设计方案包括硬件及软件设计部分;硬件部分根据不同的功能分为视频发送卡、视频接收卡、控制数据卡、音频传输卡、以太网传输卡、电源板卡、光卡及相应的业务子板原理、PCB设计。软件部分设计主要是利用FPGA完成各个板卡功能,其中包括:光卡、视频卡、数据卡、音频传输卡、以太网传输卡的逻辑程序设计与实现。测试验证阶段,确定测试手段和测试指标,以验证整机功能、性能的实现是否满足设计需求。本课题设备能充分整合业务功能,高效的提高了现光纤网络的利用率;配置更加灵活,业务功能以业务子板加业务板卡的方式实现,采用插卡式设计,可以跟据客户需求选配不同的业务板卡,即降低客户不同业务定制产品的研发成本,又可以大大缩短研发周期,有利于抢占市场;设计满足热插拔功能,便于客户及客服人员及时维修、维护设备;配置高性能光模块应对长距离传输要求;对电源及各业务端口采用工业级设计,提高产品的稳定性和可靠性。在视频监控领域远距离、多业务传输的需求中,尤其在边防、海防等长距离安防项目,由于早期规划简单、成本压力大以及施工不便等原因,光纤网络相对设计比较简单、光缆内光纤通道比较少,在网络升级方面,重新布网比较困难,工程施工难度大,旧设备维护、保养、更换不便,尤其是在视频监控实时性要求比较高的场合,所以如何提高光纤的利用率、增强视频光端机的业务功能、产品可靠性、系统可维护性等问题就显得越来越重要了。本课题主要很好的解决了上述问题,并且设计具有可灵活配置的多业务功能传输、工业级防护的高可靠性、远距离双光备份、方便快捷的维护方式等优点;具有产品升级改造的空间,在大型安防监控项目设计及复杂旧网改造等市场具有明显的优势,具有广泛的应用前景。
[Abstract]:With the development of optical fiber communication technology and the popularization of optical fiber network application, because of the obvious advantages of optical fiber communication in signal transmission quality, anti-interference ability and scalability, etc. Optical fiber communication terminal transmission equipment is gradually replacing the traditional information and data transmission equipment, especially in the field of video surveillance. The appearance of video optical terminal meets the need of long distance video transmission. This project is developed for Jiangsu Provincial Public Security Bureau to customize video optical terminal for Lianyungang municipal security monitoring system. It has been applied to the renovation projects of several frontier surveillance systems of the second Space Institute and Tianjin Armed Police Force, mainly to solve the problem of using the existing optical fiber network resources to improve the carrying capacity of the equipment at both ends of the optical fiber. In order to improve the utilization ratio of optical fiber, this paper presents a design of optical transmission platform based on optical fiber transmission, aiming at the application of remote real-time video surveillance and transmission. Finally, it realizes a kind of multi-service and can be configured flexibly. The hardware includes hardware and software design, the hardware part is divided into video sending card, video receiving card and controlling data card according to different functions, the hardware part is divided into video transmission card, video receiving card and control data card, according to different functions, the hardware part is divided into video sending card, video receiving card and control data card. The design of audio transmission card, Ethernet transmission card, power card, optical card and the corresponding business sub-board principle PCB. The software design mainly uses FPGA to complete the function of each board, including: optical card, video card, data card, audio transmission card, etc. The logical program design and implementation of Ethernet transmission card. Test verification stage, test means and test index are determined to verify the function of the whole machine and whether the performance realization meets the design requirements. It improves the utilization ratio of the present optical fiber network efficiently, the configuration is more flexible, the service function is realized by the way of business subboard plus service board, and the design of plug card is adopted, different service card can be selected according to the customer's demand. It can reduce the R & D cost of custom-made products, and shorten the R & D cycle greatly, which is helpful to occupy the market; the design can satisfy the hot-swapping function and facilitate the customers and customer service personnel to maintain and maintain the equipment in time. High performance optical modules are configured to meet the requirements of long distance transmission, industrial grade design is adopted for power supply and service ports to improve the stability and reliability of products, and in the field of video surveillance, there is a need for long distance and multi service transmission, especially in border defense. Because of the simple early planning, high cost pressure and inconvenient construction, the relatively simple design of the optical fiber network, the less fiber channel in the optical cable, and the difficulty of redistributing the network in the upgrading of the network are due to the simple early planning, the heavy cost and the inconvenient construction of the long distance security project of the coastal defense. Engineering construction is difficult, old equipment maintenance, maintenance, replacement inconvenience, especially in the video surveillance real-time requirements are relatively high, so how to improve the use of optical fiber, enhance the video optical terminal business functions, product reliability, The maintainability of the system is becoming more and more important. This topic mainly solves the above problems, and designs the multi-service function transmission with flexible configuration, the high reliability of industrial protection, the long distance double optical backup, and so on. The utility model has the advantages of convenient and quick maintenance, and has the space for product upgrading and transformation. It has obvious advantages in the design of large-scale security monitoring projects and the transformation of complex old networks, and has a wide application prospect.
【学位授予单位】：中国科学院大学(中国科学院工程管理与信息技术学院)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN929.11

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