中图分类号：V211.74+9；TH6
文献标志码：A
DOI: 10.16157/j.issn.0258-7998.223347
中文引用格式： 赵梓懿，伍春，明宏柯. 风洞自由飞多路数据采集与传输系统设计[J]. 电子技术应用，2023，49(6)：104-108.
英文引用格式： Zhao Ziyi，Wu Chun，Ming Hongke. Design of aircraft multiplexed data acquisition and transmission system in the wind tunnel[J]. Application of Electronic Technique，2023，49(6)：104-108.

Design of aircraft multiplexed data acquisition and transmission system in the wind tunnel

Abstract： Traditional experiments of free-flight in the wind tunnel use scale models to study aerodynamic parameters, with the increase in the type and number of collectors, the design of airborne equipment structure and control of data transmission are becoming more and more difficult. Aiming at this current status, a multi-channel data acquisition and transmission system based on FPGA logic control and timing drive is designed. The system adopts the three-terminal structure of airborne terminal, ground terminal and upper machine terminal, and the division of labor is clear. The airborne terminal adopts a miniaturized two-layer structured design to acquire the angle signal, wind direction sign signal, Inertial Measurement Unit (IMU) signal, aviation attitude signal, the ground terminal is responsible for the integration and distribution of data, and the upper computer terminal performs data monitoring and system control. After testing, the acquisition resolution of the system is ±0.07%FS(Full Scale) and a data transmission cycle is less than 2.42 ms, which is in line with the expected target.

Key words : free-flight；data acquisition；miniaturization；FPGA