Research On Flexible Integrated Test System Based On Task Priority Control Algorithm

In this paper,a general flexible integrated testing system has been designed for the defects of the existing testing system,combining the testing requirements of space application tasks and the advantages of flexible testing technology.Space application tasks cross in parallel,and application load test verification has the characteristics of large load scale,gradual load in place,multiple test types,centralized and decentralized testing,which makes the space application software ground test system have faced major challenges.In the past,the test system developed for specific application tasks has been unable to meet the test requirements of complex electronic equipment,increasingly complete functions,high integration performance and good real-time performance.The research content of this article is as follows:First,the overall design of the flexible integrated test system has been completed.By analyzing the problems of the current space application mission ground test system,consulting materials and consulting enterprises to determine the design requirements of the flexible integrated test system,the hardware and software solutions of the flexible integrated test system are designed.Then,according to the hardware design of the flexible integrated test system,the hardware design of the data processing board and the selection of the data acquisition card have been completed to simulate the operating environment of the space application task;According to the software design scheme of the flexible integrated test system,the design of the human-computer interaction interface of the test system,the design of the data receiving and storage module,the design of the data display module,the design of the configuration loading module,and the design of the alarm processing module have been completed.Finally,a task priority control algorithm using deferrable thinking has been proposed.Focusing on the issues of system resource utilization and processor load capacity in the process of real-time data update,a systematic analysis of the time availability of real-time data in the real-time database has been conducted,severalconstraints for task scheduling have been discussed,several traditional real-time scheduling algorithms for update tasks such as EDF,ML,and DS-FP(deferrable scheduling algorithms)have been analyzed and studied in detail,the existing methods of ensuring the time validity of real-time data and the priority control principle of the earliest time limit have been combined.The constraints of the deferrable thought in the fixed priority have been extended to the EDF dynamic priority control algorithm.The schedulability of the algorithm has been analyzed and studied.