The Design And Realization Of Interconversion System Between Hdlc Data Link And TCP/IP Data Link

With the function and technology development of the area, the data transmission is changing from analog line to digit line,from PtoP structure to TCP/IP structure, from signal data frame to multiple data frames. There are two mission_data transmission system at the area, the communication combination using HDLC protocol and the transmission_TCP/IPwork using TCP/IP protocol,which are not support to transmit between each other. With the development of weapon experiment at the area, the recent system can’t adequately fulfil the requirement of the weapon experiment.This article is showing a way to create a system to connect HDLC and TCP/IP which is established in the equipment and system we have now, depended on improving software and hardware, united mission_software which are empolderded nearly.At last,it can expediently and neatly meet the need of exchangeing and transimting data to every direction by one system.And also can raise the ability of accomplishing ultimate weapon experiment at impact area. The main results are as follows:1. From the point of technology view, the data line of the foreign army and the impact area are investigated in detail. By introducing the technology characteristic and three connection modes, the data format transform mode is used for two system connection.2. The system components, functions, interfaces and shortcoming are introduced in detail. The hardware and software conTCP/IPion are designed as a whole.3. The thesis describes the basic concept of HDLC and TCP/IP TCP/IPwork technology and the technical support of Windows systems on the TCP/IPwork application development.Then it illustrates how to develop the TCP/IPwork transmission system of the software, including the design and implementation of TCP/IPwork communication program under Windows system.4. The thesis describes the overall design and realization methods of the software, including user interface design, multithreaded programming design and data decode&display module,data storage module, and other functional modules.The research results above have been applied in the interface transform and transfer system.The practical application of system proves that the design and implementation of the processing method mentioned in this thesis is feasible and the system has played a good benefits.