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为了对飞行体多通道信号进行实时参数采集,本文提出了异步时分数据采集电路的设计方法,同时对多通道异步时分数据采集电路中的通道串扰现象进行了深入研究,提出了控制逻辑的优化方法,以及关键器件选型的依据。通过现场试验,该采集电路成功采集了飞行体的实时工作参数。工程实践表明,该系统实现了对多通道模拟信号的高精度采集,满足了工程实际需求。
In order to collect real-time parameters of multi-channel signals, this paper presents a design method of asynchronous time-division data acquisition circuit. At the same time, it studies the channel crosstalk phenomenon in multi-channel asynchronous time-division data acquisition circuit and puts forward the optimization method of control logic , And the basis for the selection of key components. Through the field test, the acquisition circuit has successfully collected the real-time working parameters of the flying body. The engineering practice shows that the system realizes the high-precision acquisition of multi-channel analog signals and meets the actual needs of the project.