公开(公告)号：US4804515A

公开(公告)日：1989-02-14

申请号：US666696

申请日：1984-10-31

Applicant: Albert W. Crew ,  James A. Neuner ,  Gilbert W. Remley ,  Robert E. Hager ,  George M. Chambers ,  Eric A. Delava ,  Susan A. Wilbur ,  Thomas J. Kenny ,  James F. Sutherland

Inventor： Albert W. Crew ,  James A. Neuner ,  Gilbert W. Remley ,  Robert E. Hager ,  George M. Chambers ,  Eric A. Delava ,  Susan A. Wilbur ,  Thomas J. Kenny ,  James F. Sutherland

IPC: G01D21/00 ,  G05B9/03 ,  G05B23/02 ,  G06F11/16 ,  G06F17/40 ,  G08C15/00 ,  G21C17/00 ,  G21D3/04 ,  G21C7/36

CPC classification number: G06F11/16 ,  G05B9/03

Abstract: Signals from redundant sensors located throughout a pressurized water reactor (PWR) nuclear power plant are processed in four independent channel sets each of which includes a plurality of independent microcomputers which calibrate, convert to engineering units and calculate partial trip signals and engineered safeguard actuation signals from the sensor signals for use in the conventional voting logic of a plant protection system. The primary and secondary partial trip and engineered safeguard actuation functions associated with various postulated abnormal events are allocated to different independent microcomputers in the channel set for reliability. A test unit common to the channel set automatically, rapidly bypasses and tests each protection function independently while the other protection functions in the channel set remain on-line and also continually tests each microcomputer through a dummy test function performed along with the assigned protection functions. Signals representative of the analog value of the sensor signals are stored by the microcomputers and are transmitted by a serial data link through a common electrical isolation unit to a common analog output device for use by the plant control and monitoring systems under the control of a communication processor common to a group of microcomputers in the channel set.

Abstract translation: 来自位于整个压水反应堆（PWR）核电站的冗余传感器的信号在四个独立的通道组中进行处理，每个独立的通道组包括多个独立的微型计算机，其校准，转换为工程单位并计算部分跳闸信号和设计的保护启动信号 传感器信号用于植物保护系统的常规投票逻辑。 与各种假设的异常事件相关联的主要和次要部分行程和设计的保护动作功能被分配给可靠性通道组中的不同的独立微型计算机。 通道设置通用的测试单元自动快速旁路并测试每个保护功能，而通道组中的其他保护功能保持在线，并且还通过与分配的保护功能一起执行的虚拟测试功能来连续测试每台微型计算机。 代表传感器信号的模拟值的信号由微型计算机存储，并通过串行数据链路通过公共电气隔离单元发送到公共模拟输出设备，以供通信控制下的工厂控制和监控系统使用 通道集中的一组微型计算机共有的处理器。