Design and Implementation of A Configurable Remote Analog Data Acquisition System Using the IEEE-1394B Bus

The analog data acquisition system developed in this paper is integrated into the remote interface unit of aircraft. It uses the high certainty and high real-time performance of the IEEE-1394B bus to realize information interaction with the aircraft backbone network, and participates in sensor closed-loop regulation and state information feedback. Using DSP + FPGA architecture, the functions of bus communication, high-speed data acquisition and decoupling control are realized. The normalization design of analog data acquisition is realized by using table driving and dynamic switching technology. The method of error calibration is applied to realize high-precision acquisition. The system software is divided into acquisition layer, interpretation layer and application layer, which has strong portability. The experimental results show that the acquisition accuracy is high, which can meet the requirements of aircraft analog data acquisition. The system developed has the characteristics of high real-time, generalization, miniaturization and strong data processing ability.