【摘要】 阐述了嵌入式系统现有的5种互联网接入方案,并在分析和比较各种方案的优缺点后,重点介绍了一种基于IP 2022虚拟外设的互联网接入方案、软硬件实现和具有以太网接口的混凝土超声成像检测仪应用实例。在混凝土模拟试件和实际桥梁检测试验中,该方案传输速率可达900 kb/s,并且可靠性高。实际应用表明:该方案设计简单、成本低廉,而且应用软件设计方便。更多还原

【Abstract】 Five methods of Internet connection of the existing embedded system were expounded.Based on the analysis and comparisons of their advantages and disadvantages,a method of IP2022-based virtual periphera Internet connection was introduced and applied to instrument for concrete ultrasonic testing.In concrete sample and bridge testing,the transmission speed can reach 900kb/s,and the reliability is pefect.Experimental result shows that this method is easy,cheap,and convenient.更多还原