多节点网络化智能教学多媒体共享系统设计  

Design of multimedia sharing system for multi-node networked intelligent teaching

作　　者：马骥超[1] MA Jichao(Jilin Unversity,Changchun 130062,China)

机构地区：[1]吉林大学

出　　处：《现代电子技术》2019年第14期157-160,164,共5页Modern Electronics Technique

基　　金：国家自然科学基金(31201866)~~

摘　　要：目前我国不断推进教育信息化进程,大量信息资源积累在网络中,信息资源形成信息孤岛,学校教学多媒体共享效果差,产生资源浪费问题。文中设计多节点网络化智能教学多媒体共享系统,通过物理控制中心和逻辑控制中心协同控制,共享多媒体资源信息。其中,逻辑控制中心中的资源共享模块通过结构化对等网络,依据节点和执行节点间的相互通信,实现智能教学多媒体资源查询、定位以及共享;控制模块由教室分控切换信号后将信号发送到教室集中控制实现消息和通信的管理。系统通过多节点网络化算法选取方差值最小的网关节点作为网关出口,确保智能教学多媒体共享网络节点的剩余负载能力强大,高效传输教学多媒体资源。实验发现,所提系统网络吞吐量高于对比系统,可以高效地共享智能教学多媒体,为教学实时点播、评估教学提供可能性,更适用于智能教学多媒体共享。A multi node networked multimedia sharing system for intelligent teaching is designed,which can control and share multimedia resource information by means of physical control center and logic control center. The can resource query,posi tioning and sharing of multimedia resources for intelligent teaching can be realized by the resource sharing module in the logic control center according to the structured peer to peer network and intercommunication between nodes and executing nodes. The module transfers the signal to the classroom after the switching signal is controlled for centralized control to realize the manage ment of message and communication. The system selects the gateway node with minimum variance as the gateway outlet by means of the multi node networking algorithm to ensure that the residual load capacity of the intelligent teaching multimedia sharing network node is greater and the teaching multimedia resources are transmitted efficiently. Experiment results show that the net work throughput capacity of this system is higher than that of the contrast system,and it can effectively share the intelligent teaching multimedia. It provides the possibility for teaching real time on demand and teaching evaluation,and is more suitable for multimedia sharing of intelligent teaching.

关 键 词：网络化智能教学 多媒体共享 教育信息化 资源查询 消息管理 方差值选取 

分 类 号：TN926.34[电子电信—通信与信息系统] TP37[电子电信—信息与通信工程]