Process control interface system having triply redundant remote field units
    44.
    发明公开
    Process control interface system having triply redundant remote field units 失效
    接口用于与Prozesssteurungssystem三重冗余远程区域部件

    公开(公告)号:EP0869415A2

    公开(公告)日:1998-10-07

    申请号:EP98109082.2

    申请日:1993-03-15

    IPC分类号: G05B9/03

    摘要: A process control interface system (10) having a network of distributed triply redundant input/output field computer units (12). The system includes a plurality of self-contained remotely located triply redundant field computer units (12) connected to decision making redundant process control computers (14) through a bi-directional communication network having at least two concurrently active communication channels (46, 48). Each of the field computer units include a set of at least three redundant field computers (92, 94, 96) for arbitrating both input and output signals. The field computer units also include individual abort circuits (510, 606) for each output signal to be transmitted to a device (84, 86) which affects the operation of the physical process. These abort circuits effectively enforce the output value signals arbitrated independently through each of the three redundant field computers using a voting procedure.

    摘要翻译: 一种过程控制界面系统(10),其具有分布三重冗余输入/输出字段计算机单元(12)的网络。 该系统包括连接到决策具有自包含位于远处的三重冗余字段的计算机单元(12)通过双向通信网络使得冗余的过程控制计算机(14)多个至少两个同时活动通信信道(46,48) , 每个现场的计算机单元的包括用于仲裁输入和输出信号的一组至少三个冗余场计算机(92,94,96)的。 因此,该字段的计算机单元包括用于每个输出信号是反式mitted到的装置(84,86),这影响所述物理过程的手术的个体中止电路(510,606)。 这些中止电路有效地执行通过各自使用表决程序三个冗余场计算机unabhängig仲裁的输出值的信号。