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公开(公告)号：US07509189B2
公开(公告)日：2009-03-24
申请号：US11476334
申请日：2006-06-28
申请人： Ian Jones
发明人： Ian Jones
IPC分类号： G05D11/00
CPC分类号： G05B9/02 , F05B2260/80 , G05B23/0235 , G05B23/0291
摘要： This invention relates to a speed monitor apparatus for monitoring speed and acceleration of rotating turbine equipment (turbomachinery) and for operating an overspeed trip to shut down the equipment in the event that the speed or acceleration exceed predetermined thresholds. The invention provides a speed monitor module wherein the speed monitor module may be may be plugged in to the same chassis as a module which is controlling the speed of the turbine, and wherein the turbine speed monitor is arranged to receive configuration parameters relating to the overspeed threshold and the overacceleration threshold only when the turbine is operating at a speed lower than a predetermined threshold.
摘要翻译： 本发明涉及一种用于监测旋转涡轮机设备（涡轮机械）的速度和加速度并用于在速度或加速度超过预定阈值的情况下操作超速跳闸以关闭设备的速度监控装置。 本发明提供了一种速度监视器模块，其中速度监视器模块可以被插入与控制涡轮机速度的模块相同的底盘，并且其中涡轮速度监视器被布置成接收与超速相关的配置参数 仅当涡轮机以低于预定阈值的速度运行时，阈值和过加速阈值。
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公开(公告)号：US07504975B2
公开(公告)日：2009-03-17
申请号：US11689266
申请日：2007-03-21
申请人： Thomas Bruce Meagher
发明人： Thomas Bruce Meagher
IPC分类号： H03M1/12
CPC分类号： G06F11/182 , G06F11/165 , H03K17/0822
摘要： This invention relates to a method and apparatus for output current control. The invention provides an output module slice for controlling an output current comprising: an output field interface controller for controlling an input voltage to a first field effect transistor; an analogue to digital converter connected to read the current flowing through said first field effect transistor and to provide a digital signal dependent thereon to said output field interface controller.
摘要翻译： 本发明涉及一种输出电流控制的方法和装置。 本发明提供一种用于控制输出电流的输出模块切片，包括：输出场接口控制器，用于控制第一场效应晶体管的输入电压; 连接到模拟数字转换器，用于读取流过所述第一场效应晶体管的电流，并提供依赖于所述输出现场接口控制器的数字信号。
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公开(公告)号：US07688560B2
公开(公告)日：2010-03-30
申请号：US11689691
申请日：2007-03-22
IPC分类号： H02H3/00
CPC分类号： G05B9/02
摘要： This invention relates to overload protection for a circuit driving a direct current (DC) load. The invention provides a method of generating an overload condition for an output module driving a load having a load current and a load voltage comprising the steps of: monitoring the load current at sample intervals; comparing the monitored load current to a predetermined load current threshold; starting an overload timer in the event that the timer is not running and the monitored load current is greater than said load current threshold; monitoring the load voltage at said sample intervals; generating a ramped load voltage waveform for reference purposes in dependence upon an initial load voltage and a predetermined step size load voltage in the event that the overload timer is running; generating an overload condition in the event that the monitored load voltage is less than said ramped load voltage reference waveform, the ramped load voltage is less than a predetermined positive ramp limit and the overload timer is running.
摘要翻译： 本发明涉及驱动直流（DC）负载的电路的过载保护。 本发明提供了一种为驱动具有负载电流和负载电压的负载的输出模块产生过载条件的方法，包括以下步骤：以采样间隔监视负载电流; 将所监测的负载电流与预定负载电流阈值进行比较; 在定时器未运行并且监视的负载电流大于所述负载电流阈值的情况下启动过载定时器; 以所述采样间隔监视负载电压; 在过载定时器运行的情况下，根据初始负载电压和预定步长负载电压产生用于参考目的的斜坡负载电压波形; 在监控的负载电压小于所述斜坡负载电压参考波形的情况下，产生过载状况，斜坡负载电压小于预定的正斜率限制，并且过载定时器正在运行。
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公开(公告)号：US07729098B2
公开(公告)日：2010-06-01
申请号：US11689703
申请日：2007-03-22
摘要： This invention relates to fault detection in electrical circuits. The invention provides a switch for a fault tolerant digital output module comprising: an output transistor pair for enabling and disabling an alternating output current; and a current limiter for clamping the output current to a predetermined maximum value.
摘要翻译： 本发明涉及电路故障检测。 本发明提供一种用于容错数字输出模块的开关，包括：输出晶体管对，用于启用和禁用交流输出电流; 以及用于将输出电流钳位到预定最大值的限流器。
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公开(公告)号：US07613974B2
公开(公告)日：2009-11-03
申请号：US11689224
申请日：2007-03-21
申请人： Thomas Bruce Meagher
发明人： Thomas Bruce Meagher
IPC分类号： G01R31/28
CPC分类号： G01R31/318516 , G01R31/318536
摘要： This invention relates to fault detection in electrical circuits. The invention provides a method and apparatus for testing an input circuit by generating a periodic test signal having a predetermined phase and a predetermined amplitude; summing the test signal and an input signal to provide a summed signal; processing the summed signal to provide an output signal; generating an extracted test signal from the output signal; comparing the extracted test signal with a reference signal representing said periodic test signal; generating an error signal in dependence upon the result of said comparing step. The invention also provides a method and apparatus for testing a plurality of adjacent input circuits.
摘要翻译： 本发明涉及电路中的故障检测。 本发明提供了一种用于通过产生具有预定相位和预定幅度的周期性测试信号来测试输入电路的方法和装置; 将测试信号和输入信号相加以提供相加的信号; 处理求和信号以提供输出信号; 从所述输出信号产生提取的测试信号; 将所提取的测试信号与表示所述周期性测试信号的参考信号进行比较; 根据所述比较步骤的结果生成误差信号。 本发明还提供一种用于测试多个相邻输入电路的方法和装置。
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公开(公告)号：US07131324B2
公开(公告)日：2006-11-07
申请号：US10892016
申请日：2004-07-15
申请人： Raymond Brown
发明人： Raymond Brown
IPC分类号： G01M19/00
CPC分类号： F16K37/0083 , F16K37/0091
摘要： This invention relates to an emergency valve shutdown system having an integrated test facility. The invention provides an apparatus for testing emergency shutdown valves in a process industry comprising: a valve having a plurality of limit switches each limit switch arranged to indicate that the valve has reached a corresponding one of a plurality of predetermined valve positions; a valve monitor module arranged to send a signal to said valve to initiate movement of said valve and to receive feedback relating to said limit switches; wherein said feedback is provided via a single feedback signal between the valve and the valve monitor module.
摘要翻译： 本发明涉及具有集成测试设备的紧急阀关闭系统。 本发明提供了一种用于在过程工业中测试紧急关闭阀的装置，包括：具有多个限位开关的阀，每个限位开关布置成指示阀已达到多个预定阀位置中相应的一个; 阀监控模块，布置成向所述阀发送信号以启动所述阀的运动并接收与所述限位开关有关的反馈; 其中所述反馈通过阀和阀监视器模块之间的单个反馈信号提供。
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公开(公告)号：US20050016254A1
公开(公告)日：2005-01-27
申请号：US10892016
申请日：2004-07-15
申请人： Raymond Brown
发明人： Raymond Brown
CPC分类号： F16K37/0083 , F16K37/0091
摘要： This invention relates to an emergency valve shutdown system having an integrated test facility. The invention provides an apparatus for testing emergency shutdown valves in a process industry comprising: a valve having a plurality of limit switches each limit switch arranged to indicate that the valve has reached a corresponding one of a plurality of predetermined valve positions; a valve monitor module arranged to send a signal to said valve to initiate movement of said valve and to receive feedback relating to said limit switches; wherein said feedback is provided via a single feedback signal between the valve and the valve monitor module.
摘要翻译： 本发明涉及具有集成测试设备的紧急阀关闭系统。 本发明提供了一种用于在过程工业中测试紧急关闭阀的装置，包括：具有多个限位开关的阀，每个限位开关布置成指示阀已达到多个预定阀位置中相应的一个; 阀监控模块，布置成向所述阀发送信号以启动所述阀的运动并接收与所述限位开关有关的反馈; 其中所述反馈通过阀和阀监视器模块之间的单个反馈信号提供。
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