基于NI-DAQ的高采样实时数据绘制方法与实现

Curve Plotting Method of High Sampling Real-time Data Based on NI-DAQ

摘要:

飞行试验实时监控中,颤振等高采样数据通常采用时间历程曲线绘制的方式进行分析与故障判断,这对数据绘制的实时性、准确性以及曲线绘制长度等都提出了较高的要求；文章在对NI PCI-6713板卡的模拟输出功能进行详细讨论和比较验证的基础上,对基于NI-DAQ的曲线绘制进行了算法研究和软件设计,实现了在监控客户端的16路高采样数据实时曲线绘制与打印；经试验验证,采用该方法绘制的高采样数据曲线准确可靠,满足监控要求,能有效保障飞行试验的正常进行。

Abstract:

In real-time monitoring of flight test, the high sampling data,such as flutter data, is generally analyzed and evaluated by means of time-history curve plotting, which must have the characteristic of real-time, high precision and enough length. In this paper, based on the detailed discussion, comparison and verification of NI PCI-6713 board in terms of the analog output, the curve plotting method of high sampling data based on NI-DAQ is researched and implemented, as a result, 16 channels high sampling data are plotted and printed on the client side. It shows that, the curves plotted by this method are accurate and reliable, meet the requirement in real-time monitoring.