论文部分内容阅读
在对 NTCIP协议集分析的基础上 ,对中心与中心及中心与现场设备间的实时交通数据的传输机制进行了研究 ,并得出如下结论 :1通过数据传输构件将检测器参数转换为标准化的交通数据。 2中心之间的实时数据传输协议可以在于OSI7层模型中应用层、表现层及会话层中进行定义 ,其相应的服务内容包括数据字典的定义、交通数据的整合及传输数据的统一编码等。
Based on the analysis of the NTCIP protocol set, the transmission mechanism of real-time traffic data between the center and the center and between the center and the field devices is studied and the following conclusions are drawn: 1) The detector parameters are converted into standardized Traffic data. 2 Real-time data transmission protocols between two centers can be defined in the application layer, presentation layer and session layer of the OSI 7 layer model. The corresponding service contents include definition of data dictionary, integration of traffic data, and unified coding of transmitted data.