边界层分离点实时数据采集与处理系统的设计与实现

通过分析实时数据采集与处理的基本原理和系统构架,搭建了适用于微型飞行器边界层分离点检测的实时信号采集与处理系统.该系统主要由模拟低通滤波电路、模数转换电路(ADC)、场可编程门阵列(FPGA)控制电路及USB接口电路构成.测试结果为:基准电平0.1mV,峰峰值407mV,频率1kHz,满足边界层分离点实时检测和判定的要求.

Real Time Signal Collection and Processing System for Detecting Boundary Layer Separation Point of Micro-Aircraft

The accurate detection of the boundary 1ayer separation point in real time has a great benefit to improve micro-aircraft's climb, maneuvering and pneumatic abilities. By analyzing the principle and framework of real time data collecting and processing system, a real time signal collecting and processing system, which could be applied to detect the boundary 1ayer separation point of micro-aircrafts, has been proposed and developed. The system mainly consists of analog low-pass filter, analog to digital converter (ADC), FPGA controlling circuits and USB interface circuits. The testing results show that the performance of developed system is good, which is well suitable for detecting and estimating the boundary 1ayer separation point in real time.