基于DSP的飞行数据采集装置的设计与实现

本设计实现了一种用于无人机试飞的数据采集装置.以GPS定位时间作为地面和空中采集数据的时间同步标准,用F2812的CAP捕获发射机PWM信号的上升下降沿,采用双积分电路将PWM信号转化成电压信号,用芯片上AD采集功能检测飞机飞行模态,外扩ADS8364用以采集飞机姿态信号.采用FIFO单工、半双工配合,中断和查询结合的方式保证F2812串口信号的可靠接收和发送.实践表明,该装置满足实际数据采集的要求.

Design and Realization of a Flight Data Acquisition Equipment Based on DSP

A data acquisition equipment for the UAV flight test is designed and realized.The two parts of the equipment on the ground and at the plane gather the data at the same time,which is labeled by the GPS.The edges of PWM signal are captured by the CAP unit;voltage from the integral circuit is gathered by the ADC module;the flight state is gathered by ADS8364.The serial com- munication interface(SCI)for single and half-duplex communication based on first in first out is adopted,and communication mode combined interrupt and query is used in system software.The experimental result shows that the equipment can meet the demand of the time limit and the data's precision.