Automatic flux mapping system
    1.
    发明授权
    Automatic flux mapping system 失效
    自动通量测绘系统

    公开(公告)号:US4255234A

    公开(公告)日:1981-03-10

    申请号:US950650

    申请日:1978-10-12

    CPC分类号: G21C17/108 G01D15/005

    摘要: In a nuclear reactor flux mapping system consisting of two operationally independent electronic subsystems for controlling the positioning of separate groups of in-core detectors within core thimbles, a communications link is provided between the two subsystems to enable one subsystem and its associated group of detectors to assume the flux mapping responsibility of the other subsystem in the event of a subsystem malfunction.

    摘要翻译: 在由两个操作上独立的电子子系统组成的核反应堆通量映射系统中,用于控制核心套管内单独核心探测器组的定位,在两个子系统之间提供通信链路,以使一个子系统及其相关的检测器组能够 假设在子系统发生故障的情况下,其他子系统的通量映射责任。

    Data system for automatic flux mapping applications
    2.
    发明授权
    Data system for automatic flux mapping applications 失效
    数据系统用于自动磁通映射应用

    公开(公告)号:US4239595A

    公开(公告)日:1980-12-16

    申请号:US2630

    申请日:1979-01-11

    CPC分类号: G21C17/108

    摘要: In an automatic flux mapping system utilizing a microprocessor for control and data information processing, signals from the in-core detectors providing the flux mapping operation are converted to a frequency link and are made available to the microprocessor via a programmable timer thus minimizing the participation of the microprocessor so that the microprocessor can be made more available to satisfy other tasks.

    摘要翻译: 在利用微处理器进行控制和数据信息处理的自动通量映射系统中,提供通量映射操作的核心内检测器的信号被转换成频率链路,并通过可编程定时器使微处理器可用,从而最小化 微处理器使得微处理器可以更多地可用于满足其他任务。

    Apparatus for electrically converting an analog signal into a digital
representation
    3.
    发明授权
    Apparatus for electrically converting an analog signal into a digital representation 失效
    用于将模拟信号电转换为数字表示的装置

    公开(公告)号:US4194183A

    公开(公告)日:1980-03-18

    申请号:US522190

    申请日:1974-11-08

    CPC分类号: G01T3/00 H03M1/08

    摘要: A method is described for electrically converting an analog signal into a digital representation in a manner that maximizes noise rejection. The digital representation is formed from a preselected number of discrete points corresponding to sampled approximations of the analog signal. In establishing the magnitudes of the respective points, digital samples of the analog signal are taken at a predetermined number of discrete coordinates along the analog signal on either side of the respective discrete points. The predetermined number of coordinates are averaged and employed as corresponding approximations for the respective discrete points in the digital representative reproduction of the analog signal. The effects of harmonics of power line frequencies associated with processing electrical equipment are minimized by sampling the discrete coordinates for a particular point over an integral number of cycles of the power line frequency. In addition, noise having a high frequency, low duty cycle can be minimized by sampling a relatively large number of discrete coordinates over a period substantially greater than the occurrence of the noise.

    摘要翻译: 描述了以使噪声抑制最大化的方式将模拟信号电转换为数字表示的方法。 数字表示由对应于模拟信号的采样近似的预选数量的离散点形成。 在建立各个点的大小时,模拟信号的数字样本沿着相应离散点的任一侧上的模拟信号以预定数量的离散坐标进行。 平均预定数量的坐标,并将其用作模拟信号的数字代表性再现中的相应离散点的对应近似。 与处理电气设备相关的电力线频率的谐波的影响通过在电力线频率的整数个周期上采样特定点的离散坐标来最小化。 此外,通过在比噪声的发生大得多的周期内采样相对大量的离散坐标,可以使具有高频率,低占空比的噪声最小化。

    Method of compensating for noise and pulse pile-up in the counting of
random pulse data
    4.
    发明授权
    Method of compensating for noise and pulse pile-up in the counting of random pulse data 失效
    在随机脉冲数据计数中补偿噪声和脉冲堆积的方法

    公开(公告)号:US4835703A

    公开(公告)日:1989-05-30

    申请号:US18898

    申请日:1987-02-25

    IPC分类号: G01R23/15 G01R29/033 G01T1/17

    CPC分类号: G01R29/033 G01R23/15 G01T1/17

    摘要: A method of counting a plurality of pulses representative of randomly occurring events includes the steps of counting the number of pulses, having an amplitude exceeding a first threshold amplitude, which occur during a predetermined sampling period to obtain a first count and counting the number of pulses, having an amplitude exceeding a second threshold amplitude, which occur during the sampling period to obtain a second count. The second count is compared to a predetermined number and the counts for that sampling period are rejected if the second count is too large. If the second count is not too large, the true count is calculated by subtracting the second count from the first count. This counting procedure is repeated for a preselected number of successive sampling periods. After the final sampling period, all of the true counts are added to obtain an accumulated count and the accumulated count is multiplied by a scaling factor to obtain an output count. This output count is further multiplied by a compensating factor to account for dead time in the detector which receives the incoming data.

    摘要翻译: 计算表示随机发生事件的多个脉冲的方法包括以下步骤:计数在预定采样周期内发生的振幅超过第一阈值振幅的脉冲数,以获得第一计数并对脉冲数进行计数 具有超过第二阈值振幅的振幅,其在采样周期期间发生以获得第二计数。 将第二计数与预定数量进行比较,并且如果第二计数太大,则该采样周期的计数被拒绝。 如果第二计数不太大,则通过从第一计数中减去第二计数来计算真实计数。 对于预选数量的连续采样周期重复该计数过程。 在最终采样周期之后,添加所有真实计数以获得累计计数,并将累积计数乘以比例因子以获得输出计数。 该输出计数进一步乘以补偿因子以考虑接收输入数据的检测器中的死区时间。

    Rod position indication system with temperature compensation
    5.
    发明授权
    Rod position indication system with temperature compensation 失效
    杆温度补偿指示系统

    公开(公告)号:US4714926A

    公开(公告)日:1987-12-22

    申请号:US922792

    申请日:1986-10-23

    IPC分类号: G01B7/00 G21C17/12 G01C19/08

    CPC分类号: G21C17/12 G01B7/003

    摘要: A position indication system for detecting the position of an elongated, metallic member which is linearly movable between first and second positions along an axis corresponding to its longitudinal dimension. A sensor is operatively associated with the member for producing a first output signal which corresponds to the position of the member and which fluctuates with changes in the temperature of the member. A temperature monitoring device is operatively associated with the member for monitoring its temperature and for producing a second output signal which varies in direct response to changes in the temperature of the member. A combining circuit is connected to the sensor and to the temperature monitoring device for receiving the first and second output signals and for producing a third output signal which represents the position of the member compensated for changes in temperature of the member.

    摘要翻译: 一种用于检测细长的金属构件的位置的位置指示系统,其可沿着与其纵向尺寸对应的轴线在第一和第二位置之间线性移动。 传感器与构件可操作地相关联,用于产生对应于构件的位置并随着构件的温度变化而波动的第一输出信号。 温度监测装置与构件可操作地相关联,用于监测其温度并产生第二输出信号,其直接响应于构件的温度变化而变化。 组合电路连接到传感器和温度监视装置,用于接收第一和第二输出信号,并产生第三输出信号,该第三输出信号表示被补偿的部件温度变化的部件的位置。

    Method and apparatus for preventing inadvertent criticality in a nuclear
fueled electric powering generating unit
    6.
    发明授权
    Method and apparatus for preventing inadvertent criticality in a nuclear fueled electric powering generating unit 失效
    用于防止核燃料电力发电单元中的意外关键性的方法和装置

    公开(公告)号:US4582672A

    公开(公告)日:1986-04-15

    申请号:US407231

    申请日:1982-08-11

    IPC分类号: G21C17/00 G21C9/00 G21D3/06

    CPC分类号: G21D3/06 G21C9/00 Y02E30/32

    摘要: An inadvertent approach to criticality in a nuclear fueled electric power generating unit is detected and an alarm is generated through on-line monitoring of the neutron flux. The difficulties of accurately measuring the low levels of neutron flux in a subcritical reactor are overcome by the use of a microcomputer which continuously generates average flux count rate signals for incremental time periods from thousands of samples taken during each such period and which serially stores the average flux count rate signals for a preselected time interval. At the end of each incremental time period, the microcomputer compares the latest average flux count rate signal with the oldest, and preferably each of the intervening stored values, and if it exceeds any of them by at least a preselected multiplication factor, an alarm is generated. The interval and multiplication factor are chosen such that an alarm is generated early enough in the event to provide adequate time for an automatic system or the operator to take action which prevents the reactor from going critical yet minimizes the likelihood of a spurious response. As applied to a pressurized water reactor system, boron dilution events are detected in time that the chemical and volume control system can be isolated and the valves for the refueling water storage tank can be opened to inject highly borated water into the reactor coolant system to keep the reactor subcritical.

    摘要翻译: 检测到核燃料发电机组的无意识的关键性方法,并通过在线监测中子通量产生报警。 准确测量亚临界反应堆中低浓度中子通量的困难是通过使用一台微型计算机克服的,该微型计算机在每个这样的时间段内从数千个样品连续生成增量时间段的平均通量计数率信号,并连续存储平均 通量计数速率信号,用于预选的时间间隔。 在每个增量时间段结束时,微型计算机将最新的平均磁通计数速率信号与最早的,优选地每个中间存储的值进行比较,并且如果它们至少超过预选的乘法因子超过其中任一个,则报警是 生成。 选择间隔和倍增因子,使得在为自动系统或操作者提供足够的时间以提供足够的时间以产生足够的时间来产生警报,以防止反应堆进入关键状态,同时最小化杂散响应的可能性。 应用于压水反应器系统时,可以及时检测硼稀释事件,即可以隔离化学和体积控制系统,并且可以打开加油储水箱的阀门,以将高度硼酸化的水注入反应堆冷却剂系统以保持 反应堆亚临界。

    Distributed microprocessor based sensor signal processing system for a
complex process
    7.
    发明授权
    Distributed microprocessor based sensor signal processing system for a complex process 失效
    基于分布式微处理器的传感器信号处理系统,用于复杂的过程

    公开(公告)号:US4804515A

    公开(公告)日:1989-02-14

    申请号:US666696

    申请日:1984-10-31

    CPC分类号: G06F11/16 G05B9/03

    摘要: 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.

    摘要翻译: 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。

    Method and apparatus for remotely monitoring a process carried out in a
containment structure
    8.
    发明授权
    Method and apparatus for remotely monitoring a process carried out in a containment structure 失效
    用于远程监测在遏制结构中执行的过程的方法和装置

    公开(公告)号:US4668465A

    公开(公告)日:1987-05-26

    申请号:US665228

    申请日:1984-10-26

    CPC分类号: G21C17/12

    摘要: A rod position indicating system for a pressurized water reactor generates within containment redundant sets of digital detector signals and applies both sets to each of two communications buses each controlled by a separate bus controller/serial output device located inside of containment. A pair of redundant serial data links transmits the redundant data from each bus controller/serial output device through containment to a dedicated CRT display and the plant computer each of which generates rod position displays from redundant information selected from one of the data links. The data for each rod is selected individually from the redundant signals received on the one data link. Rod position is presented in bargraph form on a multi-page display which includes overall status information along with the detailed presentations.

    摘要翻译: 用于加压水反应堆的杆位置指示系统在收集冗余的数字检测器信号组内产生两组,并将两组都应用于由位于安全壳内部的单独的总线控制器/串行输出设备控制的两条通信总线中的每一条。 一对冗余串行数据链路通过容纳从每个总线控制器/串行输出设备将冗余数据传送到专用CRT显示器,并且每个工厂计算机从冗余信息中选出一个数据链路产生杆位置显示。 每个棒的数据是从在一个数据链路上接收到的冗余信号分别选择的。 杆位置以条形图形式呈现在多页显示器上,其中包括总体状态信息以及详细的演示文稿。

    Method for temperature compensating a rod position indication system
    9.
    发明授权
    Method for temperature compensating a rod position indication system 失效
    棒位置指示系统温度补偿方法

    公开(公告)号:US4631537A

    公开(公告)日:1986-12-23

    申请号:US606421

    申请日:1984-09-02

    摘要: A method for temperature compensating a position indicator which includes a sensor for producing an output signal whose magnitude corresponds to the position of an element that is linearly movable between first and second positions and which is subject to changes in temperature within a given temperature range and wherein the output signal of the sensor contains a temperature variable offset component and the rate of increase of the output signal as the element moves from the first to the second position fluctuates with changes in temperature. The method includes measuring the temperature of the medium; generating an electrical representation of an offset correction, relative to a reference temperature, required in the offset component of the output signal of the sensor at the temperature of the element; generating electrical representations of a rate correction factor, relative to a reference temperature, required for the rate of increase in the output signal of the sensor at the temperature of the element; causing the sensor to produce an output signal corresponding to the position of the element; and compensating the output signal of the sensor by forming an electrical representation of the product of the sensor output signal and the rate correction factor at the measured temperature of the medium, and adding to such product the offset correction at the measured temperature of the medium.

    摘要翻译: 一种用于温度补偿位置指示器的方法,其包括用于产生输出信号的传感器,该输出信号的大小对应于在第一和第二位置之间可直线移动并且在给定温度范围内经历温度变化的元件的位置,并且其中 传感器的输出信号包含温度可变偏移分量,随着元件从第一位置移动到第二位置时输出信号的增加速率随着温度的变化而波动。 该方法包括测量介质的温度; 产生相对于参考温度的偏移校正的电表示,所述偏移校正在所述元件的温度处所述传感器的输出信号的偏移分量中需要; 产生相对于参考温度的速率校正因子的电表示,所述速率校正因子在元件的温度下传感器的输出信号的增加率所需; 使传感器产生对应于元件位置的输出信号; 以及通过在介质的测量温度下形成传感器输出信号和速率校正因子的乘积的电表示来补偿传感器的输出信号,并且在该测量的介质的测量温度下加上偏移校正。