模型飞行试验数据采集存储系统研制

Development of Data Acquisition and Storage System for Model Flight Test

摘要:

为了解决模型飞行试验中狭小空间内多种气动测试技术同时应用的难题，并满足模型飞行试验对数据获取可靠性、有效性的严苛要求，采用模块化设计方法研制了一套模型飞行试验数采集存储系统。针对多种气动测试技术分别设计了相应的信号调理、采集板卡，摒弃了外置信号调理模块，减少系统体积的同时提高了系统可靠性；采用模块化设计，堆叠式连接的方法，可以实现多种测试模块的灵活使用，系统的可扩展性、可维护性大大提高；针对存储模块采用逻辑互锁的软件设计及多种外部硬件防护措施，实现数据可靠记录及完整回收。系统研制完成后经历了严格的环境试验考核，并于2018年在两次气动模型飞行试验中实现成功应用，既满足测试精度要求又可灵活扩展实现，参数获取完整有效。

Abstract:

In order to solve the problem of the simultaneous application of various aerodynamic testing techniques in the narrow space of the model flight test, and to meet the strict requirements of the model flight test on the reliability and validity of data acquisition, a data acquisition and storage system for model flight test was developed by using the modular design method. The corresponding signal conditioning and acquisition board CARDS are designed for a variety of testing technologies. The external signal conditioning module is abandoned to reduce the system volume and improve the system reliability. The adoption of modular design, stacked connection method, can achieve the flexible use of a variety of test modules, system scalability, maintainability is greatly improved. For the storage module, the software design of logic interlock and a variety of external hardware protection measures are adopted to achieve reliable data recording and complete recovery. After the completion of the development of the system, it has undergone strict environmental test assessment, and has been successfully applied in two aerodynamic model flight tests in 2018, which not only meets the requirements of test accuracy but also can be flexibly extended to achieve complete and effective parameters.