The invention discloses a DC 110V digital quantity acquisition card based on a compact peripheral component interconnect (CPCI) bus, which comprises a self-checking control circuit, a digital quantity conditioning circuit, an optical coupler isolation and acquisition circuit, a three-state buffer, a PCI bridge and a peripheral circuit. The digital quantity conditioning circuit receives relay contact information through an external input port connector; the output end of the digital quantity conditioning circuit is connected with the optical coupler isolation and acquisition circuit; the output end of the optical coupler isolation and acquisition circuit is connected to the PCI bridge through the three-state buffer; the PCI bridge performs data interaction with a CPCI computer through a PCI bus; and the input end of the self-checking control circuit is connected with a control signal of the PCI bridge, and the output end of the self-checking control circuit is connected to the digital quantity conditioning circuit. As an expansion board of a CPCI computer, the DC 110V digital quantity input information of the subway vehicle-mounted relay can be effectively acquired, so that the state of the vehicle-mounted relay is monitored, the fault position can be quickly positioned, and a fault diagnosis effect is achieved.

    本发明公开一种基于CPCI总线的DC110V数字量采集卡,包括自检控制电路、数字量调理电路、光耦隔离与采集电路、三态缓冲器、PCI桥及外围电路,其中,数字量调理电路通过外部输入接口连接器接收继电器接点信息,数字量调理电路的输出端与光耦隔离与采集电路相连;光耦隔离与采集电路输出端通过三态缓冲器接至PCI桥;PCI桥通过PCI总线与CPCI计算机进行数据交互;自检控制电路输入端接有PCI桥的控制信号,输出端接至数字量调理电路。本发明作为CPCI计算机的扩展板,能够有效采集地铁车载继电器DC110V数字量输入信息,进而监测车载继电器状态,能够快速定位故障位置,起到故障诊断的作用。


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    Title :

    DC 110V digital quantity acquisition card based on CPCI bus


    Additional title:

    一种基于CPCI总线的DC110V数字量采集卡


    Contributors:
    JIN LIANG (author) / YANG LI (author) / CHENG ENFU (author) / TIAN JUN (author) / GUAN QINGYANG (author) / LIU JUN (author) / LIU JIAN (author) / HAN JINGYU (author) / ZHANG YONG (author) / BAI BIN (author)

    Publication date :

    2021-10-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC



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