Development Of Information Transmission Management Platform Based On VXWORKS

With more applications of Virtual Test System (VTS) in the field of distributed simulation, it requests higher real-time performance in data exchange between nodes in the entire system. In the VTS based on HIT-GPTA (HIT-General Purpose Test Architecture), information transmission management platform in charge of real-time information exchange and system management, is the key of improving the real-time performance of VTS.The purpose of this paper is to develop the information transmission management platform based on VxWorks, protect real-time performance of software running and data processing, reduce network transmission delay, and provide each member with high performance, low latency and real-time services, which is of great significance in the entire VTS.This paper introduces management capabilities and realization mechanism of the existing information transmission management platform, according to requirements in functions and performance, puts forward a real-time protection method that includes developing real-time software under VxWorks and applying hash lookup table in data processing. On hardware configuration basis, this paper analyses data flow diagram and software structure, completes task division with priority settings, utilizes buffer queue to line commands, chooses semaphores and shared memory to communicate and optimizes interrupt service routine, in order to protect real-time software running; it apllies hash lookup table in local information storage to take charge management and speed data operation, so as to protect real-time data processing; it displays mixed fonts, adds an callback to keyboard, refreshes user interface and controls test operations by WindML.In this paper, Tornado 2.2 is utilized to develop software and user interface, software testing results show that the information transmission management platform runs stably, functions well, improves real-time performance both in data processing and network transmission, and meets development needs.