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    • 2. 发明授权
    • Dynamic laser power control for gas species monitoring
    • 用于气体种类监测的动态激光功率控制
    • US07409117B2
    • 2008-08-05
    • US11045513
    • 2005-01-31
    • William A. Von DrasekShawn D. WeheMark G. Allen
    • William A. Von DrasekShawn D. WeheMark G. Allen
    • G01N21/35
    • G01N21/39G01N2201/12
    • A gas species monitoring system includes a laser, a fiber amplifier configured to receive an input signal from the laser and generate an amplified signal, and a variable optical attenuation system configured to receive at least a portion of the amplified signal and generate an attenuated signal for delivery to a measurement point, where the measurement point includes a gaseous fluid. The system further includes a detector configured to receive and process a signal from the measurement point so as to obtain a measured signal that correlates with the presence of a gas species within the gaseous fluid at the measurement point, and a processor in communication with at least the variable optical attenuation system and the detector. The processor controls the variable optical attenuation system based upon the measured signal.
    • 气体种类监测系统包括激光器,被配置为从激光器接收输入信号并产生放大信号的光纤放大器,以及可变光衰减系统,被配置为接收放大信号的至少一部分并产生衰减信号 输送到测量点,其中测量点包括气态流体。 该系统还包括检测器,其被配置为接收并处理来自测量点的信号,以便获得与测量点处的气态流体内的气体种类的存在相关的测量信号,以及至少与 可变光衰减系统和检测器。 处理器基于测量信号控制可变光衰减系统。
    • 9. 发明授权
    • Filtering particulate materials in continuous emission monitoring systems
    • 在连续排放监测系统中过滤颗粒物质
    • US07569093B2
    • 2009-08-04
    • US11394208
    • 2006-03-31
    • Pavol PrandaWilliam A. Von DrasekKenneth A. Mulderink
    • Pavol PrandaWilliam A. Von DrasekKenneth A. Mulderink
    • B01D46/00
    • B01D46/2407B01D46/0058B01D46/0067B01D46/44B01D46/46
    • A filtering system for monitoring fluid emissions from a process includes a plurality of filter assembly sections arranged in a parallel fluid flow manner with respect to each other so as to selectively receive a sample fluid (e.g., a sample gas) entering at an inlet of the system. Each filter assembly section includes a filter unit to filter particulate materials from a fluid flowing through the filter, first and second valves disposed at upstream and downstream locations of the filter unit, and a blowback flow path configured to selectively direct a cleaning fluid through the filter unit in a direction that opposes a direction in which the sample fluid flows through the filter unit. Each filter assembly section can be selectively isolated from other portions of the system so as to prevent the sample fluid from flowing through the filter assembly section while allowing a cleaning fluid to be delivered through the blowback flow path of the filter assembly section.
    • 用于监测来自过程的流体排放物的过滤系统包括多个过滤器组件部分,其以彼此平行的流体流动方式相对于彼此布置,以便选择性地接收在入口处进入的样品流体(例如样品气体) 系统。 每个过滤器组件部分包括过滤器单元,用于从流过过滤器的流体中过滤颗粒材料,设置在过滤器单元的上游和下游位置处的第一和第二阀以及被构造成选择性地引导清洁流体通过过滤器的回吹流路 在与样品流体流过过滤器单元的方向相反的方向上单元。 每个过滤器组件部分可以与系统的其他部分选择性隔离,以防止样品流体流过过滤器组件部分,同时允许清洁流体通过过滤器组件部分的回吹流路输送。
    • 10. 发明申请
    • DYNAMIC LASER POWER CONTROL FOR GAS SPECIES MONITORING
    • 用于气体物种监测的动态激光功率控制
    • US20080265142A1
    • 2008-10-30
    • US12166222
    • 2008-07-01
    • William A. VON DRASEKShawn D. WeheMark G. Allen
    • William A. VON DRASEKShawn D. WeheMark G. Allen
    • G01J1/04
    • G01N21/39G01N2201/12
    • A gas species monitoring system includes a laser, a fiber amplifier configured to receive an input signal from the laser and generate an amplified signal, and a variable optical attenuation system configured to receive at least a portion of the amplified signal and generate an attenuated signal for delivery to a measurement point, where the measurement point includes a gaseous fluid. The system further includes a detector configured to receive and process a signal from the measurement point so as to obtain a measured signal that correlates with the presence of a gas species within the gaseous fluid at the measurement point, and a processor in communication with at least the variable optical attenuation system and the detector. The processor controls the variable optical attenuation system based upon the measured signal.
    • 气体种类监测系统包括激光器,被配置为从激光器接收输入信号并产生放大信号的光纤放大器,以及可变光衰减系统,被配置为接收放大信号的至少一部分并产生衰减信号 输送到测量点,其中测量点包括气态流体。 该系统还包括检测器,其被配置为接收并处理来自测量点的信号,以便获得与测量点处的气态流体内的气体种类的存在相关的测量信号,以及至少与 可变光衰减系统和检测器。 处理器基于测量信号控制可变光衰减系统。