基于远程会议的线上交互式教学系统设计

Design of Online Interactive Teaching System Based on Teleconference

传统的线上教学系统在用户并发数较高的情况下,很难满足实时交互流量的高需求。为此,本文提出基于远程协议的线上交互教学系统设计。硬件设计方面,以STM32芯片作为核心处理器,基于远程会议设计交互模块,利用485转换器将各个模块与处理器相连;软件设计方面,将描述会话协议(Session Description Protocol,SDP)和实时传输协议(Real-time Transport Protocol,RTP)应用到系统中,完成远程交互协议的设计,构建交互任务集,计算各任务置信度并排序,按照排序结果执行交互任务。实验结果表明:设计系统在用户并发数比较高的情况下,远程连接信号转换速率快,流量传输速率高,网络延迟低,整体交互实时性得到了提高。

The traditional online teaching system is difficult to meet the high demand of real-time interactive traffic when the number of concurrent users is high. Therefore, this paper proposes the design of online interactive teaching system based on remote protocol. In terms of hardware design, STM32 chip is used as the core processor, the interactive module is designed based on remote conference, and 485 converter is used to connect each module with the processor;In terms of software design, the SDP and RTP are applied to the system to complete the design of remote interaction protocol, build interactive task set, calculate the confidence of each task and arrange them side by side, and execute interactive tasks according to the sorting results. The experimental results show that when the number of concurrent users is relatively high, the remote connection signal conversion rate is fast, the traffic transmission rate is high, the network delay is low, and the overall real-time interaction is improved.