点点冗余

请教系统各位高手：tricon系统的点点冗余是怎么冗余的？它与HIM的卡件冗余有什么区别吗？tricon的卡件是什么？一个tricon的卡件管理几个点呀？请各位高手指点一下！谢谢！

我记得TRICON卡件是好像通过OVD表决来计算的

dennyshen2549 发表于 2017-1-5 13:38
我记得TRICON卡件是好像通过OVD表决来计算的

恩，你说的很对，他的数字量确实是经过两次表决，一次反馈诊断来处理的。他还具备一个特点是点点冗余。

单个TRICON卡件的每个通道内部都是三重冗余的，而HIMA需要两个卡件来实现通道的冗余。
TRICON卡件多了，IO卡、通讯卡、MP卡
IO卡点数要看你具体型号的，一般AI/DI/DO为32通道，PI/AO为8通道。

The Tricon controller has been designed from its inception with self-diagnostics as a primary
feature. Triple-Modular Redundant (TMR) architecture (shown in Figure 9) ensures fault
tolerance and provides error-free, uninterrupted control in the event of hard failures of
components or transient faults from internal or external sources.
Each I/O module houses the circuitry for three independent channels. Each channel on the
input modules reads the process data and passes that information to its respective main
processor. The three Main Processor (MP) modules communicate with each other using a
proprietary, high-speed bus system called the TriBus.
Extensive diagnostics on each channel, module, and functional circuit quickly detect and report
operational faults by means of indicators or alarms. This fault information is available to an
application. It is critical that an application properly manage fault information to avoid an
unnecessary shutdown of a process or plant.
This section discusses the methods for properly handling faults.