一种嵌入式Web技术的在线测试研究  

Online testing based on embedded Web technology

作　　者：刘惠[1] 

机构地区：[1]中国石油大学(华东)图书馆,山东青岛266580

出　　处：《电子设计工程》2017年第5期138-141,共4页Electronic Design Engineering

基　　金：国家自然科学基金项目(60974039)

摘　　要：针对在线测试系统考题生成的保密性问题,本研究设计了一种嵌入式Web技术的在线测试系统,首先根据TCP/IP协议并结合SPI技术,将所有考生电脑答题转换后的信息通过相应的UDP端口发送到中控电脑(CCS)中,然后结合ESP8266芯片将接收到的信息发送到中央指挥中心(CCC)的微处理器LPC2138中,最终实现对考试系统进行综合管理。该在线测试系统运用随机抽题和控制考生电脑IP的方式,有效防止了作弊行为。并通过使用HTML技术解决了考题信息的安全性问题。通过对微处理器ARM性能测试,结果表明:考题设置为80题,在1 000名考生规模时,该嵌入式Web技术的系统随机出题响应时间仅为9.7 ms。Online Testing System exam generated confidentiality issues, this study design an embedded Web technology, online testing system, the first based on TCP / IP protocol in conjunction with SPI technology, the information on all the candidates to answer computer after conversion through the corresponding the UDP port sent to the central computer （CCS）, and then combined with ESP8266 chip transmits the received information to a central command center （CCC） microprocessor LPC2138, the ultimate realization of the examination system for integrated management. The online testing system using random question and control computer IP candidates way to effectively prevent cheating. And by using HTML technology to solve the security problems exam information. Through the ARM microprocessor performance test results showed that： 80 questions to the title in 1 000 when the scale of the candidates, the embedded Web technology systems random topic and response time is only 9.7 ms.

关 键 词：嵌入式系统 WEB技术 TCP/IP协议 UDP端口 在线测试 

分 类 号：TN919.3[电子电信—通信与信息系统]