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    • 3. 发明申请
    • VARIABLE WIDTH DIGITAL FILTER FOR TIME-OF-FLIGHT MASS SPECTROMETRY
    • 用于飞行时间质谱的可变宽度数字滤波器
    • WO0070648A9
    • 2002-06-27
    • PCT/US0013153
    • 2000-05-12
    • CIPHERGEN BIOSYSTEMS INCGAVIN EDWARD JBRAGINSKY LEONID
    • GAVIN EDWARD JBRAGINSKY LEONID
    • G01N27/62H01J49/06H01J49/40
    • H01J49/40
    • A method and system of detecting mass to charge ratio of ions. The method includes producing charged ions in a vacuum, accelerating the charged ions in an electric field into a free flight tube and detecting the charged ions at a detector associated with the free flight tube. A control system selects a bandwidth for filtering a signal produced by the detector and the signal produced by the detector is then filtered with a variable width digital filter based upon the selected bandwidth. The bandwidth for filtering the signal may be selected from a look-up table within the control system based upon the mass to charge ratio of an ion of interest. Alternatively, a peak bandwidth within the signal produced by the detector may be determined and the signal produced by the detector may then be filtered with the variable width digital filter based upon the determined peak bandwidth.
    • 一种检测离子质荷比的方法和系统。 该方法包括在真空中产生带电离子,将电场中的带电离子加速到自由飞行管中,并在与自由飞行管相关联的检测器处检测带电离子。 控制系统选择用于对由检测器产生的信号进行滤波的带宽,然后基于所选择的带宽,用可变宽度数字滤波器对由检测器产生的信号进行滤波。 用于过滤信号的带宽可以根据感兴趣的离子的质量与电荷比从控制系统内的查找表中选择。 或者,可以确定由检测器产生的信号内的峰值带宽,然后基于所确定的峰值带宽,用可变宽度数字滤波器对由检测器产生的信号进行滤波。
    • 4. 发明申请
    • VARIABLE WIDTH DIGITAL FILTER FOR TIME-OF-FLIGHT MASS SPECTROMETRY
    • 用于飞行时间质谱的可变宽度数字滤波器
    • WO0070648A2
    • 2000-11-23
    • PCT/US0013153
    • 2000-05-12
    • CIPHERGEN BIOSYSTEMS INCGAVIN EDWARD JBRAGINSKY LEONID
    • GAVIN EDWARD JBRAGINSKY LEONID
    • G01N27/62H01J49/06H01J49/40
    • H01J49/40
    • A method and system of detecting mass to charge ratio of ions. The method includes producing charged ions in a vacuum, accelerating the charged ions in an electric field into a free flight tube and detecting the charged ions at a detector associated with the free flight tube. A control system selects a bandwidth for filtering a signal produced by the detector and the signal produced by the detector is then filtered with a variable width digital filter based upon the selected bandwidth. The bandwidth for filtering the signal may be selected from a look-up table within the control system based upon the mass to charge ratio of an ion of interest. Alternatively, a peak bandwidth within the signal produced by the detector may be determined and the signal produced by the detector may then be filtered with the variable width digital filter based upon the determined peak bandwidth.
    • 检测离子质荷比的方法和系统。 该方法包括在真空中产生带电离子,将电场中的带电离子加速到自由飞行管中,并在与自由飞行管相关联的检测器处检测带电离子。 控制系统选择用于对由检测器产生的信号进行滤波的带宽,然后基于所选择的带宽,用可变宽度数字滤波器对由检测器产生的信号进行滤波。 用于过滤信号的带宽可以根据感兴趣的离子的质荷比来从控制系统内的查找表中选择。 或者,可以确定由检测器产生的信号内的峰值带宽,然后基于所确定的峰值带宽,用可变宽度数字滤波器对由检测器产生的信号进行滤波。