Research on Data Acquisition and Filtering Module in ATS for Helicopter

A reconfigurable data acqusition and FIR filtering module based on TMS320F2812 digital signal processor was designed according to the practical need of automatic testing system for the helicopter.The module can achieve FIR filtering,FFT spectrum analysis,and communication based on CAN bus.The design of circuit is presented.This paper focuses attention on the realization of the algorithms and the method that the system calls on the filtering algorithm automatically according to the measured signals.The systematic analysis is carried out in combination with the practical application.The result shows that the system meets the requirements of ATS and is available for use.