论文部分内容阅读
大型集装箱检测系统是海关用于检查集装箱内装货物的新一代设备，系统的计算机硬件结构包括运行管理站、图象检查处理站、检入站、验出站、图象获取站、环境控制站、数据库站等，各站之间需要进行大量的数据信息交换。介绍系统中应用的网络通讯技术，提出并讨论比较了实现通讯的几种方案，最终选择一种具有异步机制特点、基于主控／客户模式的方案作为基本通讯模式，这种方案基于ＴＣＰ／ＩＰ和请求／应答协议，极大地增强了通讯子系统的可靠性和实时响应性。在此基础上，将分布在不同地理位置、完成各自不同功能的多个计算机工作站，采用以太网连接起来就构成一个分布式计算机网络协同处理系统。
The large-scale container inspection system is a new generation of equipment used by customs to check the contents of the container. The computer hardware structure of the system includes operation management station, image inspection processing station, check-in station, inspection station, image acquisition station, environmental control station, Database stations, etc., between stations need to exchange a large amount of data. Introduce the network communication technology used in the system, propose and discuss and compare several schemes to realize the communication, and finally choose a scheme with asynchronous mechanism and master / client mode as the basic communication mode. This scheme is based on TCP / IP And request / reply protocol, greatly enhance the reliability and real-time responsiveness of the communication subsystem. On this basis, a number of computer workstations distributed in different geographical locations and fulfilling their respective functions are connected by Ethernet to form a distributed computer network co-processing system.