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載人航天器浮地信號采集接口電路研究

Interface circuit for float grounding signal acquisition in manned spacecraft

  • 摘要: 載人航天器設(shè)置雙端模擬信號采集通道實現(xiàn)對模擬量信號的差分采集。其優(yōu)勢是避免信號的共模噪聲干擾，提高信號采集的準確性。文章對于載人航天器的模擬量差分采集電路進行了簡要介紹，結(jié)合實際應(yīng)用過程中并網(wǎng)控制器模擬信號采集出現(xiàn)的特殊現(xiàn)象，提出了信號采集的接口約束條件，保證了模擬量采集電路的安全性。

     

    Abstract: A dual-end analog signal acquisition channel is used in manned spacecraft to carry out the differential signal acquisition and to avoid the common mode interference. This paper discusses the acquisition circuit of manned spacecraft, and the special phenomenon due to the parallel power connection. Finally, the constraint conditions of signal acquisition are established to ensure the safety of analog signal acquisition circuit.

     

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